Wintrust Financial (WTFC) 10-Q 8 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'WTFC	'
Entity Registrant Name	'WINTRUST FINANCIAL CORP	'
Entity Central Index Key	'0001015328	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	46,589,196

Consolidated_Statements_Of_Con

Consolidated Statements Of Condition (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Assets	'	'	'
Cash and due from banks	$349,013	$253,408	$224,286
Federal funds sold and securities purchased under resale agreements	7,965	10,456	9,013
Interest bearing deposits with banks	506,871	495,574	440,656
Available-for-sale securities, at fair value	1,824,240	2,176,290	1,843,824
Trading account securities	2,234	497	659
Federal Home Loan Bank and Federal Reserve Bank stock	84,531	79,261	79,354
Brokerage customer receivables	28,199	30,953	26,214
Mortgage loans held-for-sale	363,627	334,327	537,991
Loans, net of unearned income, excluding covered loans	13,749,996	12,896,602	12,516,892
Covered loans	275,154	346,431	454,602
Total loans	14,025,150	13,243,033	12,971,494
Less: Allowance for loan losses	92,253	96,922	106,842
Less: Allowance for covered loan losses	1,667	10,092	14,429
Net loans	13,931,230	13,136,019	12,850,223
Premises and equipment, net	535,281	531,947	512,928
FDIC indemnification asset	46,115	85,672	137,681
Accrued interest receivable and other assets	525,394	569,619	573,709
Trade date securities receivable	292,366	0	0
Goodwill	381,721	374,547	356,871
Other intangible assets	16,894	19,213	20,137
Total assets	18,895,681	18,097,783	17,613,546
Deposits:	'	'	'
Non-interest bearing	3,072,430	2,721,771	2,450,659
Interest bearing	12,483,946	11,947,018	11,915,195
Total deposits	15,556,376	14,668,789	14,365,854
Notes payable	0	364	1,729
Federal Home Loan Bank advances	580,582	417,762	585,942
Other borrowings	43,716	254,740	252,776
Subordinated notes	140,000	0	10,000
Junior subordinated debentures	249,493	249,493	249,493
Trade date securities payable	0	303,088	577
Accrued interest payable and other liabilities	327,279	302,958	310,515
Total liabilities	16,897,446	16,197,194	15,776,886
Preferred stock, no par value; 20,000,000 shares authorized:	'	'	'
Common stock, no par value; $1.00 stated value; 100,000,000 shares authorized at June 30, 2014, December 31, 2013, and June 30, 2013; 46,626,772 shares issued at June 30, 2014, 46,181,588 shares issued at December 31, 2013, and 37,984,485 shares issued at June 30, 2013	46,627	46,181	37,985
Surplus	1,125,551	1,117,032	1,066,796
Treasury stock, at cost, 73,867 shares at June 30, 2014, 65,005 shares at December 31, 2013, and 259,342 shares at June 30, 2013	-3,449	-3,000	-8,214
Retained earnings	737,542	676,935	612,821
Accumulated other comprehensive loss	-34,503	-63,036	-49,204
Total shareholders' equity	1,998,235	1,900,589	1,836,660
Total liabilities and shareholders' equity	$18,895,681	$18,097,783	$17,613,546

Consolidated_Statements_Of_Con1

Consolidated Statements Of Condition (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
				Series A - $1,000 liquidation value; No shares issued and outstanding at June 30, 2014 and December 31, 2013, and 50,000 shares issued and outstanding at June 30, 2013	Series A - $1,000 liquidation value; No shares issued and outstanding at June 30, 2014 and December 31, 2013, and 50,000 shares issued and outstanding at June 30, 2013	Series A - $1,000 liquidation value; No shares issued and outstanding at June 30, 2014 and December 31, 2013, and 50,000 shares issued and outstanding at June 30, 2013	Series C - $1,000 liquidation value; 126,467 shares issued and outstanding at June 30, 2014, 126,477 shares issued and outstanding at December 31, 2013, and 126,500 shares issued and outstanding at June 30, 2013	Series C - $1,000 liquidation value; 126,467 shares issued and outstanding at June 30, 2014, 126,477 shares issued and outstanding at December 31, 2013, and 126,500 shares issued and outstanding at June 30, 2013	Series C - $1,000 liquidation value; 126,467 shares issued and outstanding at June 30, 2014, 126,477 shares issued and outstanding at December 31, 2013, and 126,500 shares issued and outstanding at June 30, 2013
Preferred stock, no par value	'	'	'	'	'	'	'	'	'
Preferred stock, 20,000,000 shares authorized	20,000,000	20,000,000	20,000,000	'	'	'	'	'	'
Preferred stock, $1,000 liquidation value	'	'	'	$1,000	$1,000	$1,000	$1,000	$1,000	$1,000
Preferred stock, shares issued	'	'	'	0	0	50,000	126,467	126,477	126,500
Preferred stock, shares outstanding	'	'	'	0	0	50,000	126,467	126,477	126,500
Common stock, no par value	'	'	'	'	'	'	'	'	'
Common stock, $1.00 stated value	$1	$1	$1	'	'	'	'	'	'
Common stock, 100,000,000 shares authorized	100,000,000	100,000,000	100,000,000	'	'	'	'	'	'
Common stock, shares issued	46,626,772	46,181,588	37,984,485	'	'	'	'	'	'
Treasury stock, shares	73,867	65,005	259,342	'	'	'	'	'	'

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest income	'	'	'	'
Interest and fees on loans	$151,984	$145,983	$299,014	$288,097
Interest bearing deposits with banks	319	411	568	980
Federal funds sold and securities purchased under resale agreements	6	4	10	19
Available-for-sale securities	13,309	9,359	26,423	18,111
Trading account securities	5	8	14	13
Federal Home Loan Bank and Federal Reserve Bank stock	727	693	1,438	1,377
Brokerage customer receivables	200	188	409	362
Total interest income	166,550	156,646	327,876	308,959
Interest expense	'	'	'	'
Interest on deposits	11,759	13,675	23,682	28,179
Interest on Federal Home Loan Bank advances	2,705	2,821	5,348	5,585
Interest on notes payable and other borrowings	510	1,132	1,260	2,286
Interest on subordinated notes	354	52	354	111
Interest on junior subordinated debentures	2,042	3,142	4,046	6,261
Total interest expense	17,370	20,822	34,690	42,422
Net interest income	149,180	135,824	293,186	266,537
Provision for credit losses	6,660	15,382	8,540	31,069
Net interest income after provision for credit losses	142,520	120,442	284,646	235,468
Non-interest income	'	'	'	'
Wealth management	18,222	15,892	35,035	30,720
Mortgage banking	23,804	31,734	40,232	61,879
Service charges on deposit accounts	5,688	5,035	11,034	9,828
(Losses) gains on available-for-sale securities, net	-336	2	-369	253
Fees from covered call options	1,244	993	2,786	2,632
Trading (losses) gains, net	-743	3,260	-1,395	2,825
Other	6,223	7,079	12,308	13,237
Total non-interest income	54,102	63,995	99,631	121,374
Non-interest expense	'	'	'	'
Salaries and employee benefits	81,963	79,225	161,897	156,738
Equipment	7,223	6,413	14,626	12,597
Occupancy, net	9,850	8,707	20,843	17,560
Data processing	4,543	4,358	9,258	8,957
Advertising and marketing	3,558	2,722	6,374	4,762
Professional fees	4,046	4,191	7,500	7,412
Amortization of other intangible assets	1,156	1,164	2,319	2,284
FDIC insurance	3,196	3,003	6,147	6,447
OREO expense, net	2,490	2,284	6,466	664
Other	15,566	16,120	29,476	30,885
Total non-interest expense	133,591	128,187	264,906	248,306
Income before taxes	63,031	56,250	119,371	108,536
Income tax expense	24,490	21,943	46,330	42,177
Net income	38,541	34,307	73,041	66,359
Preferred stock dividends and discount accretion	1,581	2,617	3,162	5,233
Net income applicable to common shares	$36,960	$31,690	$69,879	$61,126
Net income per common share-Basic (in usd per share)	$0.79	$0.85	$1.51	$1.64
Net income per common share-Diluted (in usd per share)	$0.76	$0.69	$1.44	$1.34
Cash dividends declared per common share	$0.10	$0	$0.20	$0.09
Weighted average common shares outstanding	46,520	37,486	46,358	37,231
Dilutive potential common shares	4,402	12,354	4,456	12,363
Average common shares and dilutive common shares	50,922	49,840	50,814	49,594

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$38,541	$34,307	$73,041	$66,359
Unrealized gains (losses) on securities	'	'	'	'
Before tax	26,049	-71,463	48,575	-78,918
Tax effect	-10,332	28,341	-19,136	31,147
Net of tax	15,717	-43,122	29,439	-47,771
Less: Reclassification of net (losses) gains included in net income	'	'	'	'
Before tax	-336	2	-369	253
Tax effect	133	-1	146	-101
Net of tax	-203	1	-223	152
Net unrealized gains (losses) on securities	15,920	-43,123	29,662	-47,923
Unrealized (losses) gains on derivative instruments	'	'	'	'
Before tax	-626	2,169	-724	3,643
Tax effect	249	-865	288	-1,451
Net unrealized (losses) gains on derivative instruments	-377	1,304	-436	2,192
Foreign currency translation adjustment	'	'	'	'
Before tax	9,045	-8,241	-914	-14,545
Tax effect	-2,338	1,923	221	3,361
Net foreign currency translation adjustment	6,707	-6,318	-693	-11,184
Total other comprehensive income (loss)	22,250	-48,137	28,533	-56,915
Comprehensive income (loss)	$60,791	($13,830)	$101,574	$9,444

Consolidated_Statements_Of_Cha

Consolidated Statements Of Changes In Shareholders Equity (Unaudited) (USD $)	Total	Preferred stock	Common stock	Surplus	Treasury stock	Retained earnings	Accumulated other comprehensive income (loss)
In Thousands, unless otherwise specified
Balance at Dec. 31, 2012	$1,804,705	$176,406	$37,108	$1,036,295	($7,838)	$555,023	$7,711
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Net income	66,359	'	'	'	'	66,359	'
Other comprehensive (loss) income, net of tax	-56,915	'	'	'	'	'	-56,915
Cash dividends declared on common stock	-3,328	'	'	'	'	-3,328	'
Dividends on preferred stock	-5,163	'	'	'	'	-5,163	'
Accretion on preferred stock	0	70	'	'	'	-70	'
Stock-based compensation	4,628	'	'	4,628	0	'	'
Common stock issued for:	'	'	'	'	'	'	'
Acquisitions	23,070	'	648	22,422	'	'	'
Exercise of stock options and warrants	1,133	'	46	1,301	-214	'	'
Restricted stock awards	99	'	121	140	-162	'	'
Employee stock purchase plan	1,318	'	31	1,287	'	'	'
Director compensation plan	754	'	31	723	'	'	'
Balance at Jun. 30, 2013	1,836,660	176,476	37,985	1,066,796	-8,214	612,821	-49,204
Balance at Dec. 31, 2013	1,900,589	126,477	46,181	1,117,032	-3,000	676,935	-63,036
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Net income	73,041	'	'	'	'	73,041	0
Other comprehensive (loss) income, net of tax	28,533	'	'	'	'	'	28,533
Cash dividends declared on common stock	-9,272	'	'	'	'	-9,272	'
Dividends on preferred stock	-3,162	'	'	'	'	-3,162	'
Stock-based compensation	3,754	'	'	3,754	'	'	'
Conversion of Series C preferred stock to common stock	0	-10	1	9	'	'	'
Common stock issued for:	'	'	'	'	'	'	'
Exercise of stock options and warrants	2,506	'	347	2,472	-313	'	'
Restricted stock awards	39	'	48	127	-136	'	'
Employee stock purchase plan	1,424	'	30	1,394	'	'	'
Director compensation plan	783	'	20	763	'	'	'
Balance at Jun. 30, 2014	$1,998,235	$126,467	$46,627	$1,125,551	($3,449)	$737,542	($34,503)

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Operating Activities:	'	'
Net income	$73,041	$66,359
Adjustments to reconcile net income to net cash provided by operating activities	'	'
Provision for credit losses	8,540	31,069
Depreciation and amortization	15,510	13,874
Stock-based compensation expense	3,754	4,628
Tax (expense) benefit from stock-based compensation arrangements	-61	223
Excess tax benefits from stock-based compensation arrangements	-226	-326
Net amortization of premium on securities	3,419	155
Mortgage servicing rights fair value change, net	712	-1,456
Originations and purchases of mortgage loans held-for-sale	-1,368,131	-2,025,231
Proceeds from sales of mortgage loans held-for-sale	1,371,124	1,954,766
Increase in trading securities, net	-1,737	-76
Net decrease (increase) in brokerage customer receivables	2,754	-1,350
Gains on mortgage loans sold	-32,293	-55,326
Losses (gains) on available-for-sale securities, net	369	-253
Loss on sales of premises and equipment, net	561	0
Net loss (gains) on sales and fair value adjustments of other real estate owned	3,360	-1,926
Decrease in accrued interest receivable and other assets, net	41,887	33,531
Increase (decrease) in accrued interest payable and other liabilities, net	4,253	-12,930
Net Cash Provided by Operating Activities	126,836	5,731
Investing Activities:	'	'
Proceeds from maturities of available-for-sale securities	213,384	120,803
Proceeds from sales of available-for-sale securities	196,042	84,459
Purchases of available-for-sale securities	-608,800	-205,372
Net cash paid for acquisitions	-7,267	-9,350
Divestiture of operations	0	-149,100
Proceeds from sales of other real estate owned	47,160	40,127
Proceeds received from the FDIC related to reimbursements on covered assets	10,818	21,483
Net (increase) decrease in interest bearing deposits with banks	-11,297	653,816
Net increase in loans	-822,314	-530,412
Purchases of premises and equipment, net	-17,386	-13,097
Net Cash (Used for) Provided by Investing Activities	-999,660	13,357
Financing Activities:	'	'
Increase (decrease) in deposit accounts	882,631	-242,433
Decrease in other borrowings, net	-211,388	-22,881
Increase in Federal Home Loan Bank advances, net	163,000	172,000
Proceeds from issuance of subordinated notes, net	139,090	0
Repayment of subordinated notes	0	-5,000
Excess tax benefits from stock-based compensation arrangements	226	326
Issuance of common shares resulting from exercise of stock options, employee stock purchase plan and conversion of common stock warrants	5,262	3,457
Common stock repurchases	-449	-376
Dividends paid	-12,434	-5,910
Net Cash Provided by (Used for) Financing Activities	965,938	-100,817
Net Increase (Decrease) in Cash and Cash Equivalents	93,114	-81,729
Cash and Cash Equivalents at Beginning of Period	263,864	315,028
Cash and Cash Equivalents at End of Period	$356,978	$233,299

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements of Wintrust Financial Corporation and Subsidiaries (“Wintrust” or “the Company”) presented herein are unaudited, but in the opinion of management reflect all necessary adjustments of a normal or recurring nature for a fair presentation of results as of the dates and for the periods covered by the consolidated financial statements.
	The accompanying consolidated financial statements are unaudited and do not include information or footnotes necessary for a complete presentation of financial condition, results of operations or cash flows in accordance with U.S. generally accepted accounting principles ("GAAP"). The consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 (“2013 Form 10-K”). Operating results reported for the three-month and six-month periods are not necessarily indicative of the results which may be expected for the entire year. Reclassifications of certain prior period amounts have been made to conform to the current period presentation.
	The preparation of the financial statements requires management to make estimates, assumptions and judgments that affect the reported amounts of assets and liabilities. Management believes that the estimates made are reasonable, however, changes in estimates may be required if economic or other conditions develop differently from management’s expectations. Certain policies and accounting principles inherently have a greater reliance on the use of estimates, assumptions and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Management views critical accounting policies to be those which are highly dependent on subjective or complex judgments, estimates and assumptions, and where changes in those estimates and assumptions could have a significant impact on the financial statements. Management currently views the determination of the allowance for loan losses, allowance for covered loan losses and the allowance for losses on lending-related commitments, loans acquired with evidence of credit quality deterioration since origination, estimations of fair value, the valuations required for impairment testing of goodwill, the valuation and accounting for derivative instruments and income taxes as the accounting areas that require the most subjective and complex judgments, and as such could be the most subject to revision as new information becomes available. Descriptions of our significant accounting policies are included in Note 1 - “Summary of Significant Accounting Policies” of the Company’s 2013 Form 10-K.

Recent_Accounting_Developments

Recent Accounting Developments	6 Months Ended
	Jun. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Accounting Pronouncements and Changes in Accounting Principles	'
	Recent Accounting Developments
	Accounting for Investments in Qualified Affordable Housing Projects
	In January 2014, the FASB issued ASU No. 2014-01, “Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects,” to provide guidance on accounting for investments by a reporting entity in flow-through limited liability entities that invest in affordable housing projects that qualify for the low-income housing tax credit. This ASU permits new accounting treatment, if certain conditions are met, which allows the Company to amortize the initial cost of an investment in proportion to the amount of tax credits and other tax benefits received with recognition of the investment performance in income tax expense. This guidance is effective for fiscal years beginning after December 15, 2014 and is to be applied retrospectively. The Company does not expect this guidance to have a material impact on the Company’s consolidated financial statements.
	Repossession of Residential Real Estate Collateral
	In January 2014, the FASB issued ASU No. 2014-04, “Receivables - Troubled Debt Restructurings by Creditors (Topic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure,” to address diversity in practice and clarify guidance regarding the accounting for an in-substance repossession or foreclosure of residential real estate collateral. This ASU clarifies that an in-substance repossession or foreclosure occurs upon either the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or the borrower conveying all interest in the residential real estate property to the creditor. Additionally, this ASU requires disclosure of both the amount of foreclosed residential real estate property held by the Company and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure. This guidance is effective for fiscal years beginning after December 15, 2014. Other than requiring additional disclosures, the Company does not expect adoption of this guidance to have a material impact on the Company’s consolidated financial statements.
	Revenue Recognition
	In May 2014, the FASB issued ASU No. 2014-09, which created "Revenue from Contracts with Customers (Topic 606), to clarify the principles for recognizing revenue and develop a common revenue standard for customer contracts. This ASU provides guidance regarding how an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The ASU also added a new subtopic to the codification, ASC 340-40, "Other Assets and Deferred Costs: Contracts with Customers" to provide guidance on costs related to obtaining and fulfilling a customer contract. Furthermore, the new standard requires disclosure of sufficient information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance is effective for fiscal years beginning after December 15, 2016. The Company is current evaluating the impact of adopting this new guidance on the consolidated financial statements.

Business_Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combinations
	Non-FDIC Assisted Bank Acquisitions
	On May 16, 2014, the Company, through its wholly-owned subsidiary Hinsdale Bank and Trust Company ("Hinsdale Bank") acquired the Stone Park branch office and certain related deposits of Urban Partnership Bank ("UPB"). The Company assumed liabilities with a fair value of approximately $5.5 million, including approximately $5.4 million of deposits. Additionally, the Company recorded goodwill of $600,000 on the acquisition.
	On October 18, 2013, the Company acquired Diamond Bancorp, Inc. ("Diamond"). Diamond was the parent company of Diamond Bank, FSB ("Diamond Bank"), which operated four banking locations in Chicago, Schaumburg, Elmhurst, and Northbrook, Illinois. As part of the transaction, Diamond Bank was merged into Wintrust Bank (formerly known as North Shore Community Bank & Trust Company). The Company acquired assets with a fair value of approximately $172.5 million, including approximately $91.7 million of loans, and assumed liabilities with a fair value of approximately $169.1 million, including approximately $140.2 million of deposits. Additionally, the Company recorded goodwill of $8.4 million on the acquisition.
	On May 1, 2013, the Company acquired First Lansing Bancorp, Inc. ("FLB"). FLB was the parent company of First National Bank of Illinois ("FNBI"), which operated seven banking locations in the south and southwest suburbs of Chicago, as well as one location in northwest Indiana. As part of this transaction, FNBI was merged into Old Plank Trail Community Bank, N.A. ("Old Plank Trail Bank"). The Company acquired assets with a fair value of approximately $373.4 million, including approximately $123.0 million of loans, and assumed liabilities with a fair value of approximately $334.7 million, including approximately $331.4 million of deposits. Additionally, the Company recorded goodwill of $14.0 million on the acquisition.
	See Note 17—Subsequent Events for discussion regarding the Company's completed acquisition of a branch of THE National Bank.
	FDIC-Assisted Transactions
	Since 2010, the Company acquired the banking operations, including the acquisition of certain assets and the assumption of liabilities, of nine financial institutions in FDIC-assisted transactions. Loans comprise the majority of the assets acquired in nearly all of these FDIC-assisted transactions since 2010, most of which are subject to loss sharing agreements with the FDIC whereby the FDIC has agreed to reimburse the Company for 80% of losses incurred on the purchased loans, other real estate owned (“OREO”), and certain other assets. Additionally, the loss share agreements with the FDIC require the Company to reimburse the FDIC in the event that actual losses on covered assets are lower than the original loss estimates agreed upon with the FDIC with respect of such assets in the loss share agreements. The Company refers to the loans subject to these loss-sharing agreements as “covered loans” and uses the term “covered assets” to refer to covered loans, covered OREO and certain other covered assets. The agreements with the FDIC require that the Company follow certain servicing procedures or risk losing the FDIC reimbursement of covered asset losses.
	The loans covered by the loss sharing agreements are classified and presented as covered loans and the estimated reimbursable losses are recorded as an FDIC indemnification asset in the Consolidated Statements of Condition. The Company recorded the acquired assets and liabilities at their estimated fair values at the acquisition date. The fair value for loans reflected expected credit losses at the acquisition date. Therefore, the Company will only recognize a provision for credit losses and charge-offs on the acquired loans for any further credit deterioration subsequent to the acquisition date. See Note 7 — Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans for further discussion of the allowance on covered loans.
	The loss share agreements with the FDIC cover realized losses on loans, foreclosed real estate and certain other assets. These loss share assets are measured separately from the loan portfolios because they are not contractually embedded in the loans and are not transferable with the loans should the Company choose to dispose of them. Fair values at the acquisition dates were estimated based on projected cash flows available for loss-share based on the credit adjustments estimated for each loan pool and the loss share percentages. The loss share assets are also separately measured from the related loans and foreclosed real estate and recorded as FDIC indemnification assets on the Consolidated Statements of Condition. Subsequent to the acquisition date, reimbursements received from the FDIC for actual incurred losses will reduce the FDIC indemnification assets. Reductions to expected losses, to the extent such reductions to expected losses are the result of an improvement to the actual or expected cash flows from the covered assets, will also reduce the FDIC indemnification assets. Although these assets are contractual receivables from the FDIC, there are no contractual interest rates. Additions to expected losses will require an increase to the allowance for loan losses and a corresponding increase to the FDIC indemnification assets. The corresponding accretion is recorded as a component of non-interest income on the Consolidated Statements of Income.
	The following table summarizes the activity in the Company’s FDIC indemnification asset during the periods indicated:
		Three Months Ended						Six Months Ended
	(Dollars in thousands)	June 30,			June 30,			June 30,			June 30,
		2014			2013			2014			2013
	Balance at beginning of period	$	60,298		$	170,696		$	85,672		$	208,160
	Additions from acquisitions	—			—			—			—
	Additions from reimbursable expenses	2,067			2,827			3,349			7,860
	Amortization	(1,456		)	(1,653		)	(3,059		)	(4,121		)
	Changes in expected reimbursements from the FDIC for changes in expected credit losses	(13,645		)	(26,638		)	(29,029		)	(52,735		)
	Payments received from the FDIC	(1,149		)	(7,551		)	(10,818		)	(21,483		)
	Balance at end of period	$	46,115		$	137,681		$	46,115		$	137,681
	Divestiture of Previous FDIC-Assisted Acquisition
	On February 1, 2013, the Company completed the divestiture of the deposits and current banking operations of Second Federal Savings and Loan Association of Chicago ("Second Federal") to an unaffiliated financial institution. Through this transaction, the Company divested approximately $149 million of related deposits.
	Specialty Finance Acquisition
	On April 28, 2014, the Company, through its wholly-owned subsidiary, First Insurance Funding of Canada, Inc., completed its acquisition of Policy Billing Services Inc. and Equity Premium Finance Inc., two affiliated Canadian insurance premium funding and payment services companies. Through this transaction, the Company acquired approximately $7.4 million of premium finance receivables. The Company recorded goodwill of approximately $6.4 million at the time of the acquisition.
	Mortgage Banking Acquisitions
	On October 1, 2013, the Company, through its wholly-owned subsidiary, Barrington Bank and Trust Company, N.A. ("Barrington Bank"), acquired certain assets and assumed certain liabilities of the mortgage banking business of Surety Financial Services ("Surety") of Sherman Oaks, California. Surety had five offices located in southern California which originated approximately $1.0 billion in the twelve months prior to the acquisition date. The Company recorded goodwill of $9.5 million on the acquisition.
	Purchased loans with evidence of credit quality deterioration since origination
	Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date. Expected future cash flows at the purchase date in excess of the fair value of loans are recorded as interest income over the life of the loans if the timing and amount of the future cash flows is reasonably estimable (“accretable yield”). The difference between contractually required payments and the cash flows expected to be collected at acquisition is referred to as the non-accretable difference and represents probable losses in the portfolio.
	In determining the acquisition date fair value of purchased impaired loans, and in subsequent accounting, the Company aggregates these purchased loans into pools of loans by common risk characteristics, such as credit risk rating and loan type. Subsequent to the purchase date, increases in cash flows over those expected at the purchase date are recognized as interest income prospectively. Subsequent decreases to the expected cash flows will generally result in a provision for loan losses.
	The Company purchased a portfolio of life insurance premium finance receivables in 2009. These purchased life insurance premium finance receivables are valued on an individual basis with the accretable component being recognized into interest income using the effective yield method over the estimated remaining life of the loans. The non-accretable portion is evaluated each quarter and if the loans’ credit related conditions improve, a portion is transferred to the accretable component and accreted over future periods. In the event a specific loan prepays in whole, any remaining accretable and non-accretable discount is recognized in income immediately. If credit related conditions deteriorate, an allowance related to these loans will be established as part of the provision for credit losses.
	See Note 6—Loans, for more information on loans acquired with evidence of credit quality deterioration since origination.

Cash_and_Cash_Equivalents

Cash and Cash Equivalents	6 Months Ended
	Jun. 30, 2014
Cash and Cash Equivalents [Abstract]	'
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	For purposes of the Consolidated Statements of Cash Flows, the Company considers cash and cash equivalents to include cash on hand, cash items in the process of collection, non-interest bearing amounts due from correspondent banks, federal funds sold and securities purchased under resale agreements with original maturities of three months or less.

AvailableForSale_Securities

Available-For-Sale Securities	6 Months Ended
	Jun. 30, 2014
Available-for-sale Securities [Abstract]	'
Investments in Debt and Marketable Equity Securities	'
	Available-For-Sale Securities
	The following tables are a summary of the available-for-sale securities portfolio as of the dates shown:
		30-Jun-14
	(Dollars in thousands)	Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
					Gains			Losses
	U.S. Treasury	$	399,031		$	354		$	(10,970	)	$	388,415
	U.S. Government agencies	798,889			4,458			(37,347		)	766,000
	Municipal	173,664			4,385			(1,942		)	176,107
	Corporate notes:
	Financial issuers	129,211			2,402			(1,387		)	130,226
	Other	4,980			97			—			5,077
	Mortgage-backed: (1)
	Mortgage-backed securities	255,082			5,190			(9,097		)	251,175
	Collateralized mortgage obligations	52,672			389			(673		)	52,388
	Equity securities	50,594			4,634			(376		)	54,852
	Total available-for-sale securities	$	1,864,123		$	21,909		$	(61,792	)	$	1,824,240
		31-Dec-13
		Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
	(Dollars in thousands)				Gains			Losses
	U.S. Treasury	$	354,262		$	141		$	(18,308	)	$	336,095
	U.S. Government agencies	950,086			1,680			(56,078		)	895,688
	Municipal	154,463			2,551			(4,298		)	152,716
	Corporate notes:
	Financial issuers	129,362			1,993			(2,411		)	128,944
	Other	5,994			105			(5		)	6,094
	Mortgage-backed: (1)
	Mortgage-backed securities	562,708			3,537			(18,047		)	548,198
	Collateralized mortgage obligations	57,711			258			(942		)	57,027
	Equity securities	50,532			1,493			(497		)	51,528
	Total available-for-sale securities	$	2,265,118		$	11,758		$	(100,586	)	$	2,176,290
		30-Jun-13
		Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
	(Dollars in thousands)				Gains			Losses
	U.S. Treasury	$	225,200		$	134		$	(14,359	)	$	210,975
	U.S. Government agencies	996,137			1,976			(39,655		)	958,458
	Municipal	152,208			1,281			(3,362		)	150,127
	Corporate notes:
	Financial issuers	133,453			2,290			(2,783		)	132,960
	Other	8,838			135			—			8,973
	Mortgage-backed: (1)
	Mortgage-backed securities	279,925			3,971			(14,866		)	269,030
	Collateralized mortgage obligations	63,833			434			(530		)	63,737
	Equity securities	52,437			746			(3,619		)	49,564
	Total available-for-sale securities	$	1,912,031		$	10,967		$	(79,174	)	$	1,843,824
	-1	Consisting entirely of residential mortgage-backed securities, none of which are subprime.
	The following table presents the portion of the Company’s available-for-sale securities portfolio which has gross unrealized losses, reflecting the length of time that individual securities have been in a continuous unrealized loss position at June 30, 2014:
		Continuous unrealized						Continuous unrealized						Total
		losses existing for						losses existing for
		less than 12 months						greater than 12 months
	(Dollars in thousands)	Fair Value			Unrealized Losses			Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	U.S. Treasury	$	—		$	—		$	189,188		$	(10,970	)	$	189,188	$	(10,970	)
	U.S. Government agencies	26,310			(460		)	445,927			(36,887		)	472,237		(37,347		)
	Municipal	5,866			(36		)	55,190			(1,906		)	61,056		(1,942		)
	Corporate notes:
	Financial issuers	1,326			(3		)	57,808			(1,384		)	59,134		(1,387		)
	Other	—			—			—			—			—		—
	Mortgage-backed:
	Mortgage-backed securities	6			—			143,712			(9,097		)	143,718		(9,097		)
	Collateralized mortgage obligations	7,043			(130		)	14,261			(543		)	21,304		(673		)
	Equity securities	—			—			13,425			(376		)	13,425		(376		)
Total	$	40,551		$	(629	)	$	919,511		$	(61,163	)	$	960,062	$	(61,792	)
The Company conducts a regular assessment of its investment securities to determine whether securities are other-than-temporarily impaired considering, among other factors, the nature of the securities, credit ratings or financial condition of the issuer, the extent and duration of the unrealized loss, expected cash flows, market conditions and the Company’s ability to hold the securities through the anticipated recovery period.
The Company does not consider securities with unrealized losses at June 30, 2014 to be other-than-temporarily impaired. The Company does not intend to sell these investments and it is more likely than not that the Company will not be required to sell these investments before recovery of the amortized cost bases, which may be the maturity dates of the securities. The unrealized losses within each category have occurred as a result of changes in interest rates, market spreads and market conditions subsequent to purchase. Securities with continuous unrealized losses existing for more than twelve months were primarily agency bonds, treasury notes and mortgage-backed securities. Unrealized losses recognized on agency bonds, treasury notes and mortgage backed securities are the result of increases in yields for similar types of securities which have a longer duration and maturity.
The following table provides information as to the amount of gross gains and gross losses realized and proceeds received through the sales of available-for-sale investment securities:
	Three months ended						Six months ended
(Dollars in thousands)	June 30,			June 30,			June 30,			June 30,
	2014			2013			2014			2013
Realized gains	$	99		$	3		$	154		$	316
Realized losses	(435		)	(1		)	(523		)	(63		)
Net realized (losses) gains	$	(336	)	$	2		$	(369	)	$	253
Other than temporary impairment charges	—			—			—			—
(Losses) gains on available-for-sale securities, net	$	(336	)	$	2		$	(369	)	$	253
Proceeds from sales of available-for-sale securities	$	169,753		$	43,403		$	196,042		$	84,459
The amortized cost and fair value of securities as of June 30, 2014, December 31, 2013 and June 30, 2013, by contractual maturity, are shown in the following table. Contractual maturities may differ from actual maturities as borrowers may have the right to call or repay obligations with or without call or prepayment penalties. Mortgage-backed securities are not included in the maturity categories in the following maturity summary as actual maturities may differ from contractual maturities because the underlying mortgages may be called or prepaid without penalties:
	30-Jun-14						31-Dec-13						30-Jun-13
(Dollars in thousands)	Amortized Cost			Fair Value			Amortized Cost			Fair Value			Amortized Cost		Fair Value
Due in one year or less	$	173,991		$	174,220		$	268,847		$	269,168		$	284,334	$	284,734
Due in one to five years	361,300			362,423			358,108			358,357			320,175		320,189
Due in five to ten years	319,641			310,196			350,372			330,020			382,837		366,341
Due after ten years	650,843			618,986			616,840			561,992			528,490		490,229
Mortgage-backed	307,754			303,563			620,419			605,225			343,758		332,767
Equity securities	50,594			54,852			50,532			51,528			52,437		49,564
Total available-for-sale securities	$	1,864,123		$	1,824,240		$	2,265,118		$	2,176,290		$	1,912,031	$	1,843,824
Securities having a carrying value of $1.1 billion at June 30, 2014, $1.2 billion at December 31, 2013 and $1.1 billion at June 30, 2013, were pledged as collateral for public deposits, trust deposits, FHLB advances, securities sold under repurchase agreements and derivatives. At June 30, 2014, there were no securities of a single issuer, other than U.S. Government-sponsored agency securities, which exceeded 10% of shareholders’ equity.

Loans

Loans	6 Months Ended
	Jun. 30, 2014
Loans and Leases Receivable Disclosure [Abstract]	'
Loans	'
	Loans
	The following table shows the Company’s loan portfolio by category as of the dates shown:
		June 30,			December 31,			June 30,
	(Dollars in thousands)	2014			2013			2013
	Balance:
	Commercial	$	3,640,430		$	3,253,687		$	3,119,931
	Commercial real-estate	4,353,472			4,230,035			4,094,628
	Home equity	713,642			719,137			758,260
	Residential real-estate	451,905			434,992			384,961
	Premium finance receivables—commercial	2,378,529			2,167,565			2,165,734
	Premium finance receivables—life insurance	2,051,645			1,923,698			1,821,147
	Consumer and other	160,373			167,488			172,231
	Total loans, net of unearned income, excluding covered loans	$	13,749,996		$	12,896,602		$	12,516,892
	Covered loans	275,154			346,431			454,602
	Total loans	$	14,025,150		$	13,243,033		$	12,971,494
	Mix:
	Commercial	26		%	25		%	24		%
	Commercial real-estate	31			32			31
	Home equity	5			5			6
	Residential real-estate	3			3			3
	Premium finance receivables—commercial	17			16			16
	Premium finance receivables—life insurance	15			15			14
	Consumer and other	1			1			2
	Total loans, net of unearned income, excluding covered loans	98		%	97		%	96		%
	Covered loans	2			3			4
	Total loans	100		%	100		%	100		%
	The Company’s loan portfolio is generally comprised of loans to consumers and small to medium-sized businesses located within the geographic market areas that the banks serve. The premium finance receivables portfolios are made to customers throughout the United States and Canada. The Company strives to maintain a loan portfolio that is diverse in terms of loan type, industry, borrower and geographic concentrations. Such diversification reduces the exposure to economic downturns that may occur in different segments of the economy or in different industries.
	Certain premium finance receivables are recorded net of unearned income. The unearned income portions of such premium finance receivables were $44.8 million at June 30, 2014, $41.9 million at December 31, 2013 and $41.5 million at June 30, 2013, respectively. Certain life insurance premium finance receivables attributable to the life insurance premium finance loan acquisition in 2009 as well as purchased credit impaired ("PCI") loans acquired with evidence of credit quality deterioration since origination are recorded net of credit discounts. See “Acquired Loan Information at Acquisition” below.
	Total loans, excluding PCI loans, include net deferred loan fees and costs and fair value purchase accounting adjustments totaling $(1.3) million at June 30, 2014, $(9.2) million at December 31, 2013 and $(3.6) million at June 30, 2013. The net credit balances at June 30, 2014, December 31, 2013 and June 30, 2013 are primarily the result of purchase accounting adjustments related to the acquisition of FNBI and Diamond during 2013.
	It is the policy of the Company to review each prospective credit in order to determine the appropriateness and, when required, the adequacy of security or collateral necessary to obtain when making a loan. The type of collateral, when required, will vary from liquid assets to real estate. The Company seeks to ensure access to collateral, in the event of default, through adherence to state lending laws and the Company’s credit monitoring procedures.
	Acquired Loan Information at Acquisition—PCI Loans
	As part of our previous acquisitions, we acquired loans for which there was evidence of credit quality deterioration since origination and we determined that it was probable that the Company would be unable to collect all contractually required principal and interest payments.
	The following table presents the unpaid principal balance and carrying value for these acquired loans:
		30-Jun-14						31-Dec-13
		Unpaid			Carrying			Unpaid			Carrying
		Principal						Principal
	(Dollars in thousands)	Balance			Value			Balance			Value
	Bank acquisitions	$	349,565		$	265,522		$	453,944		$	338,517
	Life insurance premium finance loans acquisition	419,805			409,760			437,155			423,906
	See Note 7—Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans for further discussion regarding the allowance for loan losses associated with PCI loans at June 30, 2014.
	Accretable Yield Activity
	Changes in expected cash flows may vary from period to period as the Company periodically updates its cash flow model assumptions for loans acquired with evidence of credit quality deterioration since origination. The factors that most significantly affect the estimates of gross cash flows expected to be collected, and accordingly the accretable yield, include changes in the benchmark interest rate indices for variable-rate products and changes in prepayment assumptions and loss estimates. The following table provides activity for the accretable yield of loans acquired with evidence of credit quality deterioration since origination:
		Three Months Ended						Three Months Ended
		30-Jun-14						30-Jun-13
	(Dollars in thousands)	Bank Acquisitions			Life Insurance			Bank			Life Insurance
					Premium Finance Loans			Acquisitions			Premium
											Finance Loans
	Accretable yield, beginning balance	$	97,674		$	6,561		$	121,725		$	11,218
	Acquisitions	—			—			2,055			—
	Accretable yield amortized to interest income	(9,617		)	(1,433		)	(9,347		)	(2,254		)
	Accretable yield amortized to indemnification asset (1)	(11,161		)	—			(11,906		)	—
	Reclassification from non-accretable difference (2)	17,928			—			30,792			1,007
	(Decreases) increases in interest cash flows due to payments and changes in interest rates	(2,722		)	51			(2,463		)	316
	Accretable yield, ending balance (3)	$	92,102		$	5,179		$	130,856		$	10,287
		Six Months Ended						Six Months Ended
		30-Jun-14						30-Jun-13
	(Dollars in thousands)	Bank Acquisitions			Life Insurance			Bank			Life Insurance
					Premium Finance Loans			Acquisitions			Premium
											Finance Loans
	Accretable yield, beginning balance	$	107,655		$	8,254		$	143,224		$	13,055
	Acquisitions	—			—			1,977			—
	Accretable yield amortized to interest income	(17,387		)	(3,204		)	(18,924		)	(4,273		)
	Accretable yield amortized to indemnification asset (1)	(16,809		)	—			(20,612		)	—
Reclassification from non-accretable difference (2)	26,508			—			36,204			1,007
(Decreases) increases in interest cash flows due to payments and changes in interest rates	(7,865		)	129			(11,013		)	498
Accretable yield, ending balance (3)	$	92,102		$	5,179		$	130,856		$	10,287
-1	Represents the portion of the current period accreted yield, resulting from lower expected losses, applied to reduce the loss share indemnification asset.
-2	Reclassification is the result of subsequent increases in expected principal cash flows.
-3	As of June 30, 2014, the Company estimates that the remaining accretable yield balance to be amortized to the indemnification asset for the bank acquisitions is $30.0 million. The remainder of the accretable yield related to bank acquisitions is expected to be amortized to interest income.
Accretion to interest income from loans acquired in bank acquisitions totaled $9.6 million and $9.3 million in the second quarter of 2014 and 2013, respectively. On a year-to-date basis, accretion to interest income from loans acquired in bank acquisitions totaled $17.4 million for the first six months ended 2014 compared to $18.9 million in the same period of the prior year. These amounts include accretion from both covered and non-covered loans, and are included together within interest and fees on loans in the Consolidated Statements of Income.

Allowance_for_Loan_Losses_Allo

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans	6 Months Ended
	Jun. 30, 2014
Loans and Leases Receivable, Allowance [Abstract]	'
Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans	'
	Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans
	The tables below show the aging of the Company’s loan portfolio at June 30, 2014, December 31, 2013 and June 30, 2013:
	As of June 30, 2014					90+ days and still accruing				60-89 days past due				30-59 days past due
	(Dollars in thousands)	Nonaccrual																Current				Total Loans
	Loan Balances:
	Commercial
	Commercial and industrial	$	6,216			$	—			$	4,165			$	21,610			$	1,980,489			$	2,012,480
	Franchise	—				—				—				549				222,907				223,456
	Mortgage warehouse lines of credit	—				—				—				1,680				146,531				148,211
	Community Advantage—homeowners association	—				—				—				—				94,009				94,009
	Aircraft	—				—				—				—				7,847				7,847
	Asset-based lending	295				—				—				6,047				772,002				778,344
	Tax exempt	—				—				—				—				208,913				208,913
	Leases	—				—				—				36				144,399				144,435
	Other	—				—				—				—				9,792				9,792
	PCI - commercial (1)	—				1,452				—				224				11,267				12,943
	Total commercial	6,511				1,452				4,165				30,146				3,598,156				3,640,430
	Commercial real-estate:
	Residential construction	—				—				—				18				29,941				29,959
	Commercial construction	839				—				—				—				154,220				155,059
	Land	2,367				—				614				4,502				98,444				105,927
	Office	10,950				—				999				3,911				652,057				667,917
	Industrial	5,097				—				899				690				610,954				617,640
	Retail	6,909				—				1,334				2,560				686,292				697,095
	Multi-family	689				—				244				4,717				630,519				636,169
	Mixed use and other	9,470				309				5,384				12,300				1,350,976				1,378,439
	PCI - commercial real-estate (1)	—				15,682				155				1,595				47,835				65,267
	Total commercial real-estate	36,321				15,991				9,629				30,293				4,261,238				4,353,472
	Home equity	5,804				—				1,392				3,324				703,122				713,642
	Residential real estate	15,294				—				1,487				1,978				430,364				449,123
	PCI - residential real estate (1)	—				988				111				—				1,683				2,782
	Premium finance receivables
	Commercial insurance loans	12,298				10,275				12,335				14,672				2,328,949				2,378,529
	Life insurance loans	—				649				896				4,783				1,635,557				1,641,885
	PCI - life insurance loans (1)	—				—				—				—				409,760				409,760
	Consumer and other	1,116				73				558				600				157,828				160,175
	PCI - consumer and other (1)	—				—				4				—				194				198
	Total loans, net of unearned income, excluding covered loans	$	77,344			$	29,428			$	30,577			$	85,796			$	13,526,851			$	13,749,996
	Covered loans	6,690				34,486				4,003				1,482				228,493				275,154
	Total loans, net of unearned income	$	84,034			$	63,914			$	34,580			$	87,278			$	13,755,344			$	14,025,150
	-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
	As of December 31, 2013					90+ days and still accruing				60-89 days past due				30-59 days past due
	(Dollars in thousands)	Nonaccrual																Current				Total Loans
	Loan Balances:
	Commercial
	Commercial and industrial	$	10,143			$	—			$	4,938			$	7,404			$	1,813,721			$	1,836,206
	Franchise	—				—				400				—				219,983				220,383
	Mortgage warehouse lines of credit	—				—				—				—				67,470				67,470
	Community Advantage—homeowners association	—				—				—				—				90,894				90,894
	Aircraft	—				—				—				—				10,241				10,241
	Asset-based lending	637				—				388				1,878				732,190				735,093
	Tax exempt	—				—				—				—				161,239				161,239
	Leases	—				—				—				788				109,043				109,831
	Other	—				—				—				—				11,147				11,147
	PCI - commercial (1)	—				274				156				1,685				9,068				11,183
	Total commercial	10,780				274				5,882				11,755				3,224,996				3,253,687
	Commercial real-estate
	Residential construction	149				—				—				—				38,351				38,500
	Commercial construction	6,969				—				—				505				129,232				136,706
	Land	2,814				—				4,224				619				99,128				106,785
	Office	10,087				—				2,265				3,862				626,027				642,241
	Industrial	5,654				—				585				914				626,785				633,938
	Retail	10,862				—				837				2,435				642,125				656,259
Multi-family	2,035				—				—				348				564,154				566,537
Mixed use and other	8,088				230				3,943				15,949				1,344,244				1,372,454
PCI - commercial real-estate (1)	—				18,582				3,540				5,238				49,255				76,615
Total commercial real-estate	46,658				18,812				15,394				29,870				4,119,301				4,230,035
Home equity	10,071				—				1,344				3,060				704,662				719,137
Residential real-estate	14,974				—				1,689				5,032				410,430				432,125
PCI - residential real-estate (1)	—				1,988				—				—				879				2,867
Premium finance receivables
Commercial insurance loans	10,537				8,842				6,912				24,094				2,117,180				2,167,565
Life insurance loans	—				—				2,524				1,808				1,495,460				1,499,792
PCI - life insurance loans (1)	—				—				—				—				423,906				423,906
Consumer and other	1,137				105				76				1,010				163,956				166,284
PCI - consumer and other (1)	—				181				—				—				1,023				1,204
Total loans, net of unearned income, excluding covered loans	$	94,157			$	30,202			$	33,821			$	76,629			$	12,661,793			$	12,896,602
Covered loans	9,425				56,282				5,877				7,937				266,910				346,431
Total loans, net of unearned income	$	103,582			$	86,484			$	39,698			$	84,566			$	12,928,703			$	13,243,033
-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
As of June 30, 2013					90+ days and still accruing				60-89 days past due				30-59 days past due
(Dollars in thousands)	Nonaccrual																Current				Total Loans
Loan Balances:
Commercial
Commercial and industrial	$	15,432			$	—			$	2,940			$	12,111			$	1,665,753			$	1,696,236
Franchise	—				—				—				450				201,790				202,240
Mortgage warehouse lines of credit	—				—				—				—				174,422				174,422
Community Advantage—homeowners association	—				—				—				—				83,003				83,003
Aircraft	—				—				—				—				13,174				13,174
Asset-based lending	1,816				100				2,305				4,949				676,531				685,701
Tax exempt	—				—				—				—				151,492				151,492
Leases	—				—				—				—				102,409				102,409
Other	—				—				—				—				98				98
PCI - commercial (1)	—				190				—				1,632				9,334				11,156
Total commercial	17,248				290				5,245				19,142				3,078,006				3,119,931
Commercial real-estate:
Residential construction	2,659				3,263				379				—				32,998				39,299
Commercial construction	7,857				—				1,271				70				128,845				138,043
Land	5,742				—				330				4,141				106,640				116,853
Office	6,324				—				4,210				2,720				584,503				597,757
Industrial	5,773				—				4,597				4,984				600,147				615,501
Retail	7,471				—				1,760				2,031				596,129				607,391
Multi-family	3,337				—				401				3,149				526,681				533,568
Mixed use and other	15,662				—				2,183				10,379				1,350,581				1,378,805
PCI - commercial real-estate (1)	—				6,466				3,430				6,226				51,289				67,411
Total commercial real-estate	54,825				9,729				18,561				33,700				3,977,813				4,094,628
Home equity	12,322				25				2,085				5,821				738,007				758,260
Residential real estate	10,213				—				1,896				1,836				368,696				382,641
PCI - residential real estate (1)	—				—				46				260				2,014				2,320
Premium finance receivables
Commercial insurance loans	13,605				6,671				6,592				11,386				2,127,480				2,165,734
Life insurance loans	16				1,212				7,896				—				1,337,573				1,346,697
PCI - life insurance loans (1)	—				—				—				—				474,450				474,450
Consumer and other	1,768				217				512				584				168,812				171,893
PCI - consumer and other (1)	—				28				—				—				310				338
Total loans, net of unearned income, excluding covered loans	$	109,997			$	18,172			$	42,833			$	72,729			$	12,273,161			$	12,516,892
Covered loans	3,982				97,000				10,568				4,852				338,200				454,602
Total loans, net of unearned income	$	113,979			$	115,172			$	53,401			$	77,581			$	12,611,361			$	12,971,494
-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
Our ability to manage credit risk depends in large part on our ability to properly identify and manage problem loans. To do so, we operate a credit risk rating system under which our credit management personnel assign a credit risk rating (1 to 10 rating) to each loan at the time of origination and review loans on a regular basis.
Each loan officer is responsible for monitoring his or her loan portfolio, recommending a credit risk rating for each loan in his or her portfolio and ensuring the credit risk ratings are appropriate. These credit risk ratings are then ratified by the bank’s chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors including: a borrower’s financial strength, cash flow coverage, collateral protection and guarantees.
The Company’s Problem Loan Reporting system automatically includes all loans with credit risk ratings of 6 through 9. This system is designed to provide an on-going detailed tracking mechanism for each problem loan. Once management determines that a loan has deteriorated to a point where it has a credit risk rating of 6 or worse, the Company’s Managed Asset Division performs an overall credit and collateral review. As part of this review, all underlying collateral is identified and the valuation methodology is analyzed and tracked. As a result of this initial review by the Company’s Managed Asset Division, the credit risk rating is reviewed and a portion of the outstanding loan balance may be deemed uncollectible or an impairment reserve may be established. The Company’s impairment analysis utilizes an independent re-appraisal of the collateral (unless such a third-party evaluation is not possible due to the unique nature of the collateral, such as a closely-held business or thinly traded securities). In the case of commercial real-estate collateral, an independent third party appraisal is ordered by the Company’s Real Estate Services Group to determine if there has been any change in the underlying collateral value. These independent appraisals are reviewed by the Real Estate Services Group and sometimes by independent third party valuation experts and may be adjusted depending upon market conditions.
Through the credit risk rating process, loans are reviewed to determine if they are performing in accordance with the original contractual terms. If the borrower has failed to comply with the original contractual terms, further action may be required by the Company, including a downgrade in the credit risk rating, movement to non-accrual status, a charge-off or the establishment of a specific impairment reserve. If we determine that a loan amount, or portion thereof, is uncollectible, the loan’s credit risk rating is immediately downgraded to an 8 or 9 and the uncollectible amount is charged-off. Any loan that has a partial charge-off continues to be assigned a credit risk rating of an 8 or 9 for the duration of time that a balance remains outstanding. The Company undertakes a thorough and ongoing analysis to determine if additional impairment and/or charge-offs are appropriate and to begin a workout plan for the credit to minimize actual losses.
If, based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a specific impairment reserve is established. In determining the appropriate charge-off for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral.
Non-performing loans include all non-accrual loans (8 and 9 risk ratings) as well as loans 90 days past due and still accruing interest, excluding PCI loans. The remainder of the portfolio is considered performing under the contractual terms of the loan agreement. The following table presents the recorded investment based on performance of loans by class, excluding covered loans, per the most recent analysis at June 30, 2014, December 31, 2013 and June 30, 2013:
	Performing												Non-performing											Total
(Dollars in thousands)	30-Jun-14				31-Dec-13				30-Jun-13				30-Jun-14				31-Dec-13				30-Jun-13			30-Jun-14			31-Dec-13		30-Jun-13
Loan Balances:
Commercial
Commercial and industrial	$	2,006,264			$	1,826,063			$	1,680,804			$	6,216			$	10,143			$	15,432		$	2,012,480		$	1,836,206	$	1,696,236
Franchise	223,456				220,383				202,240				—				—				—			223,456			220,383		202,240
Mortgage warehouse lines of credit	148,211				67,470				174,422				—				—				—			148,211			67,470		174,422
Community Advantage—homeowners association	94,009				90,894				83,003				—				—				—			94,009			90,894		83,003
Aircraft	7,847				10,241				13,174				—				—				—			7,847			10,241		13,174
Asset-based lending	778,049				734,456				683,785				295				637				1,916			778,344			735,093		685,701
Tax exempt	208,913				161,239				151,492				—				—				—			208,913			161,239		151,492
Leases	144,435				109,831				102,409				—				—				—			144,435			109,831		102,409
Other	9,792				11,147				98				—				—				—			9,792			11,147		98
PCI - commercial (1)	12,943				11,183				11,156				—				—				—			12,943			11,183		11,156
Total commercial	3,633,919				3,242,907				3,102,583				6,511				10,780				17,348			3,640,430			3,253,687		3,119,931
Commercial real-estate
Residential construction	29,959				38,351				33,377				—				149				5,922			29,959			38,500		39,299
Commercial construction	154,220				129,737				130,186				839				6,969				7,857			155,059			136,706		138,043
Land	103,560				103,971				111,111				2,367				2,814				5,742			105,927			106,785		116,853
Office	656,967				632,154				591,433				10,950				10,087				6,324			667,917			642,241		597,757
Industrial	612,543				628,284				609,728				5,097				5,654				5,773			617,640			633,938		615,501
Retail	690,186				645,397				599,920				6,909				10,862				7,471			697,095			656,259		607,391
Multi-family	635,480				564,502				530,231				689				2,035				3,337			636,169			566,537		533,568
Mixed use and other	1,368,660				1,364,136				1,363,143				9,779				8,318				15,662			1,378,439			1,372,454		1,378,805
PCI - commercial real-estate(1)	65,267				76,615				67,411				—				—				—			65,267			76,615		67,411
Total commercial real-estate	4,316,842				4,183,147				4,036,540				36,630				46,888				58,088			4,353,472			4,230,035		4,094,628
Home equity	707,838				709,066				745,913				5,804				10,071				12,347			713,642			719,137		758,260
Residential real-estate	433,829				417,151				372,428				15,294				14,974				10,213			449,123			432,125		382,641
PCI - residential real-estate (1)	2,782				2,867				2,320				—				—				—			2,782			2,867		2,320
Premium finance receivables
Commercial insurance loans	2,355,956				2,148,186				2,145,458				22,573				19,379				20,276			2,378,529			2,167,565		2,165,734
Life insurance loans	1,641,236				1,499,792				1,345,469				649				—				1,228			1,641,885			1,499,792		1,346,697
PCI - life insurance loans (1)	409,760				423,906				474,450				—				—				—			409,760			423,906		474,450
Consumer and other	158,986				165,042				169,908				1,189				1,242				1,985			160,175			166,284		171,893
PCI - consumer and other(1)	198				1,204				338				—				—				—			198			1,204		338
Total loans, net of unearned income, excluding covered loans	$	13,661,346			$	12,793,268			$	12,395,407			$	88,650			$	103,334			$	121,485		$	13,749,996		$	12,896,602	$	12,516,892
-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. See Note 6 - Loans for further discussion of these purchased loans.
A summary of activity in the allowance for credit losses by loan portfolio (excluding covered loans) for the three months ended June 30, 2014 and 2013 is as follows:
Three months ended June 30, 2014					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
(Dollars in thousands)	Commercial
Allowance for credit losses
Allowance for loan losses at beginning of period	$	24,689			$	44,605			$	10,966			$	4,691			$	5,582			$	1,742		$	92,275
Other adjustments	(22		)		(96		)		(1		)		(2		)		16				—			(105		)
Reclassification from (to) allowance for unfunded lending-related commitments	—				(146		)		—				—				—				—			(146		)
Charge-offs	(2,384		)		(2,351		)		(730		)		(689		)		(1,492		)		(213		)	(7,859		)
Recoveries	270				342				122				74				314				153			1,275
Provision for credit losses	3,485				(1,652		)		3,561				(341		)		1,889				(129		)	6,813
Allowance for loan losses at period end	$	26,038			$	40,702			$	13,918			$	3,733			$	6,309			$	1,553		$	92,253
Allowance for unfunded lending-related commitments at period end	$	—			$	884			$	—			$	—			$	—			$	—		$	884
Allowance for credit losses at period end	$	26,038			$	41,586			$	13,918			$	3,733			$	6,309			$	1,553		$	93,137
Individually evaluated for impairment	$	1,927			$	7,237			$	636			$	484			$	—			$	102		$	10,386
Collectively evaluated for impairment	24,100				34,349				13,282				3,196				6,309				1,451			82,687
Loans acquired with deteriorated credit quality	11				—				—				53				—				—			64
Loans at period end
Individually evaluated for impairment	$	12,397			$	100,068			$	6,030			$	18,680			$	—			$	1,560		$	138,735
Collectively evaluated for impairment	3,615,090				4,188,137				707,612				430,443				4,020,414				158,615			13,120,311
Loans acquired with deteriorated credit quality	12,943				65,267				—				2,782				409,760				198			490,950
Three months ended June 30, 2013					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
(Dollars in thousands)	Commercial
Allowance for credit losses
Allowance for loan losses at beginning of period	$	28,952			$	56,408			$	12,122			$	5,140			$	6,071			$	1,655		$	110,348
Other adjustments	(1		)		(211		)		—				(85		)		(12		)		—			(309		)
Reclassification from (to) allowance for unfunded lending-related commitments	—				65				—				—				—				—			65
Charge-offs	(1,093		)		(14,947		)		(1,785		)		(517		)		(1,306		)		(128		)	(19,776		)
Recoveries	268				584				171				18				279				61			1,381
Provision for credit losses	605				10,057				3,697				269				236				269			15,133
Allowance for loan losses at period end	$	28,731			$	51,956			$	14,205			$	4,825			$	5,268			$	1,857		$	106,842
Allowance for unfunded lending-related commitments at period end	$	—			$	3,563			$	—			$	—			$	—			$	—		$	3,563
Allowance for credit losses at period end	$	28,731			$	55,519			$	14,205			$	4,825			$	5,268			$	1,857		$	110,405
Individually evaluated for impairment	$	5,587			$	7,411			$	1,060			$	606			$	—			$	218		$	14,882
Collectively evaluated for impairment	23,066				47,994				13,145				4,209				5,268				1,639			95,321
Loans acquired with deteriorated credit quality	78				114				—				10				—				—			202
Loans at period end
Individually evaluated for impairment	$	25,495			$	139,920			$	13,488			$	13,629			$	—			$	1,838		$	194,370
Collectively evaluated for impairment	3,083,280				3,887,297				744,772				369,012				3,512,431				170,055			11,766,847
Loans acquired with deteriorated credit quality	11,156				67,411				—				2,320				474,450				338			555,675
Six months ended June 30, 2014					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
(Dollars in thousands)	Commercial
Allowance for credit losses
Allowance for loan losses at beginning of period	$	23,092			$	48,658			$	12,611			$	5,108			$	5,583			$	1,870		$	96,922
Other adjustments	(37		)		(217		)		(2		)		(4		)		7				—			(253		)
Reclassification from (to) allowance for unfunded lending-related commitments	—				(164		)		—				—				—				—			(164		)
Charge-offs	(3,032		)		(6,844		)		(2,997		)		(915		)		(2,702		)		(386		)	(16,876		)
Recoveries	587				487				379				205				635				214			2,507
Provision for credit losses	5,428				(1,218		)		3,927				(661		)		2,786				(145		)	10,117
Allowance for loan losses at period end	$	26,038			$	40,702			$	13,918			$	3,733			$	6,309			$	1,553		$	92,253
Allowance for unfunded lending-related commitments at period end	$	—			$	884			$	—			$	—			$	—			$	—		$	884
Allowance for credit losses at period end	$	26,038			$	41,586			$	13,918			$	3,733			$	6,309			$	1,553		$	93,137
Six months ended June 30, 2013					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
(Dollars in thousands)	Commercial
Allowance for credit losses
Allowance for loan losses at beginning of period	$	28,794			$	52,135			$	12,734			$	5,560			$	6,096			$	2,032		$	107,351
Other adjustments	(4		)		(428		)		—				(94		)		(12		)		—			(538		)
Reclassification from (to) allowance for unfunded lending-related commitments	—				(148		)		—				—				—				—			(148		)
Charge-offs	(5,633		)		(18,246		)		(4,182		)		(2,245		)		(2,374		)		(257		)	(32,937		)
Recoveries	563				952				333				23				573				170			2,614
Provision for credit losses	5,011				17,691				5,320				1,581				985				(88		)	30,500
Allowance for loan losses at period end	$	28,731			$	51,956			$	14,205			$	4,825			$	5,268			$	1,857		$	106,842
Allowance for unfunded lending-related commitments at period end	$	—			$	3,563			$	—			$	—			$	—			$	—		$	3,563
Allowance for credit losses at period end	$	28,731			$	55,519			$	14,205			$	4,825			$	5,268			$	1,857		$	110,405
A summary of activity in the allowance for covered loan losses for the three months ended June 30, 2014 and 2013 is as follows:
	Three Months Ended								Six Months Ended
	June 30,				June 30,				June 30,				June 30,
(Dollars in thousands)	2014				2013				2014				2013
Balance at beginning of period	$	3,447			$	12,272			$	10,092			$	13,454
Provision for covered loan losses before benefit attributable to FDIC loss share agreements	(764		)		1,246				(7,885		)		2,846
Benefit attributable to FDIC loss share agreements	611				(997		)		6,308				(2,277		)
Net provision for covered loan losses	(153		)		249				(1,577		)		569
(Decrease) increase in FDIC indemnification asset	(611		)		997				(6,308		)		2,277
Loans charged-off	(2,189		)		(2,266		)		(5,053		)		(5,057		)
Recoveries of loans charged-off	1,173				3,177				4,513				3,186
Net recoveries (charge-offs)	(1,016		)		911				(540		)		(1,871		)
Balance at end of period	$	1,667			$	14,429			$	1,667			$	14,429
In conjunction with FDIC-assisted transactions, the Company entered into loss share agreements with the FDIC. Additional expected losses, to the extent such expected losses result in the recognition of an allowance for loan losses, will increase the FDIC indemnification asset. The allowance for loan losses for loans acquired in FDIC-assisted transactions is determined without giving consideration to the amounts recoverable through loss share agreements (since the loss share agreements are separately accounted for and thus presented “gross” on the balance sheet). On the Consolidated Statements of Income, the provision for credit losses related to covered loans is reported net of changes in the amount recoverable under the loss share agreements. Reductions to expected losses, to the extent such reductions to expected losses are the result of an improvement to the actual or expected cash flows from the covered assets, will reduce the FDIC indemnification asset. Additions to expected losses will require an increase to the allowance for loan losses, and a corresponding increase to the FDIC indemnification asset. See “FDIC-Assisted Transactions” within Note 3 – Business Combinations for more detail.
Impaired Loans
A summary of impaired loans, including troubled debt restructurings ("TDRs"), is as follows:
	June 30,				December 31,				June 30,
(Dollars in thousands)	2014				2013				2013
Impaired loans (included in non-performing and TDRs):
Impaired loans with an allowance for loan loss required (1)	$	91,511			$	92,184			$	96,519
Impaired loans with no allowance for loan loss required	45,734				70,045				93,629
Total impaired loans (2)	$	137,245			$	162,229			$	190,148
Allowance for loan losses related to impaired loans	$	10,298			$	8,265			$	11,839
TDRs	$	88,107			$	107,103			$	126,196
-1	These impaired loans require an allowance for loan losses because the estimated fair value of the loans or related collateral is less than the recorded investment in the loans.
-2	Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.
The following tables present impaired loans evaluated for impairment by loan class for the periods ended as follows:
													For the Six Months Ended
	As of June 30, 2014												30-Jun-14
	Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
(Dollars in thousands)
Impaired loans with a related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	7,220			$	10,152			$	1,631			$	8,332			$	339
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	270				290				270				275				7
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	—				—				—				—				—
Commercial construction	2,146				2,156				128				2,150				44
Land	11,687				15,538				363				11,876				378
Office	14,403				15,159				2,664				14,517				335
Industrial	3,349				3,455				227				3,372				76
Retail	14,320				14,733				1,590				14,343				304
Multi-family	2,835				3,349				119				2,857				73
Mixed use and other	27,418				27,565				2,111				28,474				551
Home equity	1,562				1,616				636				1,567				30
Residential real-estate	5,997				6,372				457				5,914				140
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
PCI - life insurance	—				—				—				—				—
Consumer and other	304				364				102				308				8
Impaired loans with no related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	4,222			$	8,666			$	—			$	4,591			$	219
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	25				1,952				—				150				50
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	—				—				—				—				—
Commercial construction	1,031				1,031				—				1,051				23
Land	3,917				4,958				—				5,657				131
Office	2,598				2,599				—				2,605				73
Industrial	3,603				3,839				—				3,155				95
Retail	6,422				7,813				—				6,456				188
Multi-family	440				966				—				497				22
Mixed use and other	5,330				7,842				—				5,875				218
Home equity	4,468				6,553				—				4,842				138
Residential real-estate	12,422				15,538				—				12,836				295
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
PCI - life insurance	—				—				—				—				—
Consumer and other	1,256				1,775				—				1,260				53
Total loans, net of unearned income, excluding covered loans	$	137,245			$	164,281			$	10,298			$	142,960			$	3,790
													For the Twelve Months Ended
	As of December 31, 2013												31-Dec-13
	Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
(Dollars in thousands)
Impaired loans with a related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	6,297			$	7,001			$	1,078			$	6,611			$	354
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	282				294				282				295				14
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	—				—				—				—				—
Commercial construction	3,099				3,099				18				3,098				115
Land	10,518				11,871				259				10,323				411
Office	7,792				8,444				1,253				8,148				333
Industrial	3,385				3,506				193				3,638				179
Retail	17,511				17,638				1,253				17,678				724
Multi-family	3,237				3,730				235				2,248				139
Mixed use and other	28,935				29,051				1,366				26,792				1,194
Home equity	3,985				5,238				1,593				4,855				236
Residential real-estate	6,876				7,023				626				6,335				273
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	267				269				109				273				11
Impaired loans with no related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	9,890			$	16,333			$	—			$	13,928			$	1,043
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	354				2,311				—				2,162				121
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	1,463				1,530				—				1,609				64
Commercial construction	7,710				13,227				—				9,680				722
Land	5,035				8,813				—				5,384				418
Office	10,379				11,717				—				10,925				610
Industrial	5,087				5,267				—				5,160				328
Retail	7,047				8,610				—				8,462				400
Multi-family	608				1,030				—				903				47
Mixed use and other	4,077				6,213				—				5,046				352
Home equity	6,312				7,790				—				6,307				324
Residential real-estate	10,761				13,585				—				9,443				393
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	1,322				1,865				—				1,355				115
Total loans, net of unearned income, excluding covered loans	$	162,229			$	195,455			$	8,265			$	170,658			$	8,920
													For the Six Months Ended
	As of June 30, 2013												30-Jun-13
	Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
(Dollars in thousands)
Impaired loans with a related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	11,720			$	13,429			$	4,561			$	12,131			$	434
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	1,803				1,810				988				1,721				46
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	1,528				1,615				403				1,547				33
Commercial construction	10,591				10,591				67				10,853				207
Land	8,713				8,894				173				7,281				117
Office	9,306				9,411				685				9,385				170
Industrial	4,165				5,226				203				5,047				159
Retail	12,730				12,730				152				12,675				254
Multi-family	4,712				5,173				1,068				4,824				112
Mixed use and other	23,996				24,940				1,686				21,742				499
Home equity	3,454				4,857				1,060				4,183				87
Residential real-estate	3,155				3,666				575				2,905				62
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	646				648				218				650				17
Impaired loans with no related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	11,028			$	14,384			$	—			$	12,155			$	393
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	12				1,352				—				19				36
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	4,100				4,481				—				3,782				81
Commercial construction	8,377				13,410				—				11,508				357
Land	8,195				13,910				—				9,791				331
Office	7,442				9,171				—				8,581				237
Industrial	5,178				5,321				—				5,234				141
Retail	16,114				17,374				—				15,512				406
Multi-family	894				3,009				—				1,235				74
Mixed use and other	10,856				13,464				—				9,623				293
Home equity	10,034				11,734				—				10,012				235
Residential real-estate	10,207				10,860				—				10,632				211
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	1,192				1,736				—				1,221				52
Total loans, net of unearned income, excluding covered loans	$	190,148			$	223,196			$	11,839			$	194,249			$	5,044
TDRs
At June 30, 2014, the Company had $88.1 million in loans modified in TDRs. The $88.1 million in TDRs represents 143 credits in which economic concessions were granted to certain borrowers to better align the terms of their loans with their current ability to pay.
The Company’s approach to restructuring loans, excluding PCI loans, is built on its credit risk rating system which requires credit management personnel to assign a credit risk rating to each loan. In each case, the loan officer is responsible for recommending a credit risk rating for each loan and ensuring the credit risk ratings are appropriate. These credit risk ratings are then reviewed and approved by the bank’s chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors including a borrower’s financial strength, cash flow coverage, collateral protection and guarantees. The Company’s credit risk rating scale is one through ten with higher scores indicating higher risk. In the case of loans rated six or worse following modification, the Company’s Managed Assets Division evaluates the loan and the credit risk rating and determines that the loan has been restructured to be reasonably assured of repayment and of performance according to the modified terms and is supported by a current, well-documented credit assessment of the borrower’s financial condition and prospects for repayment under the revised terms.
A modification of a loan, excluding PCI loans, with an existing credit risk rating of six or worse or a modification of any other credit which will result in a restructured credit risk rating of six or worse, must be reviewed for possible TDR classification. In that event, our Managed Assets Division conducts an overall credit and collateral review. A modification of these loans is considered to be a TDR if both (1) the borrower is experiencing financial difficulty and (2) for economic or legal reasons, the bank grants a concession to a borrower that it would not otherwise consider. The modification of a loan, excluding PCI loans, where the credit risk rating is five or better both before and after such modification is not considered to be a TDR. Based on the Company’s credit risk rating system, it considers that borrowers whose credit risk rating is five or better are not experiencing financial difficulties and therefore, are not considered TDRs.
All credits determined to be a TDR will continue to be classified as a TDR in all subsequent periods, unless the borrower has been in compliance with the loan’s modified terms for a period of six months (including over a calendar year-end) and the modified interest rate represented a market rate at the time of a restructuring. The Managed Assets Division, in consultation with the respective loan officer, determines whether the modified interest rate represented a current market rate at the time of restructuring. Using knowledge of current market conditions and rates, competitive pricing on recent loan originations, and an assessment of various characteristics of the modified loan (including collateral position and payment history), an appropriate market rate for a new borrower with similar risk is determined. If the modified interest rate meets or exceeds this market rate for a new borrower with similar risk, the modified interest rate represents a market rate at the time of restructuring. Additionally, before removing a loan from TDR classification, a review of the current or previously measured impairment on the loan and any concerns related to future performance by the borrower is conducted. If concerns exist about the future ability of the borrower to meet its obligations under the loans based on a credit review by the Managed Assets Division, the TDR classification is not removed from the loan. Loans classified as TDRs that are re-modified subsequent to the initial determination will continue to be classified as TDRs following the re-modification, unless the requirements for removal from TDR classification discussed above are satisfied at the time of the re-modification.
TDRs are reviewed at the time of the modification and on a quarterly basis to determine if a specific reserve is necessary. The carrying amount of the loan is compared to the expected payments to be received, discounted at the loan's original rate, or for collateral dependent loans, to the fair value of the collateral. Any shortfall is recorded as a specific reserve. The Company, in accordance with ASC 310-10, continues to individually measure impairment of these loans after the TDR classification is removed.
Each TDR was reviewed for impairment at June 30, 2014 and approximately $4.9 million of impairment was present and appropriately reserved for through the Company’s normal reserving methodology in the Company’s allowance for loan losses. For TDRs in which impairment is calculated by the present value of future cash flows, the Company records interest income representing the decrease in impairment resulting from the passage of time during the respective period, which differs from interest income from contractually required interest on these specific loans.  During the three months ended June 30, 2014 and 2013, the Company recorded $103,000 and $296,000, respectively, in interest income representing this decrease in impairment. For the six months ended June 30, 2014 and 2013, the Company recorded $235,000 and $522,000, respectively, in interest income.
The tables below present a summary of the post-modification balance of loans restructured during the three months ended June 30, 2014 and 2013, respectively, which represent TDRs:
Three months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
30-Jun-14									Below Market							Rate (2)							Interest-only
									Terms (2)														Payments (2)
(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
Commercial
Commercial and industrial		—			$	—			—			$	—			—			$	—			—		$	—		—	$	—
Commercial real-estate
Commercial construction		—			—				—			—				—			—				—		—			—	—
Land		—			—				—			—				—			—				—		—			—	—
Office		1			790				1			790				—			—				—		—			—	—
Industrial		—			—				—			—				—			—				—		—			—	—
Retail		—			—				—			—				—			—				—		—			—	—
Multi-family		1			181				—			—				1			181				—		—			—	—
Mixed use and other		4			1,049				1			233				4			1,049				—		—			—	—
Residential real estate and other		1			220				1			220				—			—				1		220			—	—
Total loans		7			$	2,240			3			$	1,243			5			$	1,230			1		$	220		—	$	—
Three months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
30-Jun-13									Below Market							Rate (2)							Interest-only
									Terms (2)														Payments (2)
(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
Commercial
Commercial and industrial		—			$	—			—			$	—			—			$	—			—		$	—		—	$	—
Commercial real-estate
Commercial construction		3			6,120				3			6,120				—			—				3		6,120			—	—
Land		—			—				—			—				—			—				—		—			—	—
Office		3			3,465				3			3,465				—			—				—		—			—	—
Industrial		1			949				1			949				1			949				—		—			—	—
Retail		—			—				—			—				—			—				—		—			—	—
Multi-family		—			—				—			—				—			—				—		—			—	—
Mixed use and other		2			3,533				2			3,533				2			3,533				—		—			—	—
Residential real estate and other		3			401				1			25				3			401				1		111			—	—
Total loans		12			$	14,468			10			$	14,092			6			$	4,883			4		$	6,231		—	$	—
-1	TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.
-2	Balances represent the recorded investment in the loan at the time of the restructuring.
During the three months ended June 30, 2014, seven loans totaling $2.2 million were determined to be TDRs, compared to 12 loans totaling $14.5 million in the same period of 2013. Of these loans extended at below market terms, the weighted average extension had a term of approximately 16 months during the three months ended June 30, 2014 and 2013. Further, the weighted average decrease in the stated interest rate for loans with a reduction of interest rate during the period was approximately 137 basis points and 225 basis points during the three months ending June 30, 2014 and 2013, respectively. Interest-only payment terms were approximately six months during the three months ending June 30, 2014 compared to approximately eleven months during the three months ending June 30, 2013. Additionally, no principal balances were forgiven in the second quarter of 2014 and 2013.
Six months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
30-Jun-14									Below Market							Rate (2)							Interest-only
									Terms (2)														Payments (2)
(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
Commercial
Commercial and industrial		1			$	88			1			$	88			—			$	—			1		$	88		—	$	—
Commercial real-estate
Commercial construction		—			—				—			—				—			—				—		—			—	—
Land		—			—				—			—				—			—				—		—			—	—
Office		1			790				1			790				—			—				—		—			—	—
Industrial		1			1,078				1			1,078				—			—				1		1,078			—	—
Retail		1			202				1			202				—			—				—		—			—	—
Multi-family		1			181				—			—				1			181				—		—			—	—
Mixed use and other		7			4,926				3			2,837				7			4,926				1		1,273			—	—
Residential real estate and other		1			220				1			220				—			—				1		220			—	—
Total loans		13			$	7,485			8			$	5,215			8			$	5,107			4		$	2,659		—	$	—
Six months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
30-Jun-13									Below Market							Rate (2)							Interest-only
									Terms (2)														Payments (2)
(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
Commercial
Commercial and industrial		6			$	708			5			$	573			4			$	553			2		$	185		—	$	—
Commercial real-estate
Commercial construction		3			6,120				3			6,120				—			—				3		6,120			—	—
Land		2			287				2			287				2			287				—		—			1	73
Office		3			3,465				3			3,465				—			—				—		—			—	—
Industrial		1			949				1			949				1			949				—		—			—	—
Retail		1			200				1			200				1			200				—		—			—	—
Multi-family		1			705				1			705				1			705				—		—			—	—
Mixed use and other		2			3,533				2			3,533				2			3,533				—		—			—	—
Residential real estate and other		7			778				3			95				6			762				2		234			—	—
Total loans		26			$	16,745			21			$	15,927			17			$	6,989			7		$	6,539		1	$	73
-1	TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.
-2	Balances represent the recorded investment in the loan at the time of the restructuring.
During the six months ended June 30, 2014, 13 loans totaling $7.5 million were determined to be TDRs, compared to 26 loans totaling $16.7 million in the same period of 2013. Of these loans extended at below market terms, the weighted average extension had a term of approximately 14 months during the six months ended June 30, 2014 compared to 17 months for the same period of 2013. Further, the weighted average decrease in the stated interest rate for loans with a reduction of interest rate during the period was approximately 167 basis points and 203 basis points during the six months ending June 30, 2014 and 2013, respectively. Interest-only payment terms were approximately nine months and eleven months during the six months ending June 30, 2014 and 2013, respectively. Additionally, no balances were forgiven in the first six months of 2014 compared to $50,000 in balances forgiven during the same period of 2013.
The following table presents a summary of all loans restructured in TDRs during the twelve months ended June 30, 2014 and 2013, and such loans which were in payment default under the restructured terms during the respective periods below:
(Dollars in thousands)	As of June 30, 2014							Three Months Ended							Six Months Ended
								June 30, 2014							30-Jun-14
	Total (1)(3)							Payments in Default  (2)(3)							Payments in Default  (2)(3)
	Count			Balance				Count			Balance				Count			Balance
Commercial
Commercial and industrial	1			$	88			—			$	—			—			$	—
Commercial real-estate
Residential construction	—			—				—			—				—			—
Commercial construction	—			—				—			—				—			—
Land	1			2,352				1			2,352				1			2,352
Office	2			1,345				—			—				—			—
Industrial	1			1,078				1			1,078				1			1,078
Retail	1			202				—			—				—			—
Multi-family	1			181				—			—				—			—
Mixed use and other	11			6,436				3			577				3			577
Residential real estate and other	4			1,738				1			169				1			169
Total loans	22			$	13,420			6			$	4,176			6			$	4,176
-1	Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.
-2	TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.
-3	Balances represent the recorded investment in the loan at the time of the restructuring.
(Dollars in thousands)	As of June 30, 2013							Three Months Ended							Six Months Ended
								June 30, 2013							30-Jun-13
	Total (1)(3)							Payments in Default  (2)(3)							Payments in Default  (2)(3)
	Count			Balance				Count			Balance				Count			Balance
Commercial
Commercial and industrial	11			$	2,136			3			$	236			3			$	236
Commercial real-estate
Residential construction	1			496				—			—				—			—
Commercial construction	3			6,120				—			—				—			—
Land	2			287				—			—				—			—
Office	3			3,465				1			1,648				1			1,648
Industrial	2			1,676				1			727				1			727
Retail	4			5,085				—			—				—			—
Multi-family	2			1,085				1			705				1			705
Mixed use and other	11			7,230				3			683				3			683
Residential real estate and other	12			1,341				5			563				5			563
Total loans	51			$	28,921			14			$	4,562			14			$	4,562
-1	Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.
-2	TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.
-3	Balances represent the recorded investment in the loan at the time of the restructuring.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	A summary of the Company’s goodwill assets by business segment is presented in the following table:
	(Dollars in thousands)	January 1,			Goodwill			Impairment			Goodwill Adjustments		June 30,
		2014			Acquired			Loss					2014
	Community banking	$	305,313		$	600		$	—		$	—	$	305,913
	Specialty finance	37,370			6,435			—			139		43,944
	Wealth management	31,864			—			—			—		31,864
	Total	$	374,547		$	7,035		$	—		$	139	$	381,721
	The community banking segment's goodwill increased $600,000 in 2014 as a result of the acquisition of the Stone Park branch office and certain related deposits of Urban Partnership Bank in the second quarter of 2014. The specialty finance segment’s goodwill increased $6.6 million in 2014 as a result of the acquisitions of Policy Billing Services Inc. and Equity Premium Finance Inc. during the second quarter of 2014 and foreign currency translation adjustments related to previous Canadian acquisitions.
	At June 30, 2014, the Company utilized a quantitative approach for its annual goodwill impairment test of the community banking segment and determined that it is not more likely than not that an impairment existed at that time. The annual goodwill impairment tests of the specialty finance and wealth management segments will be conducted at December 31, 2014.
	A summary of finite-lived intangible assets as of the dates shown and the expected amortization as of June 30, 2014 is as follows:
	(Dollars in thousands)	June 30,			31-Dec-13			June 30,
		2014						2013
	Community banking segment:
	Core deposit intangibles:
	Gross carrying amount	$	40,770		$	40,770		$	39,350
	Accumulated amortization	(31,223		)	(29,189		)	(27,132		)
	Net carrying amount	$	9,547		$	11,581		$	12,218
	Specialty finance segment:
	Customer list intangibles:
	Gross carrying amount	$	1,800		$	1,800		$	1,800
	Accumulated amortization	(878		)	(805		)	(731		)
	Net carrying amount	$	922		$	995		$	1,069
	Wealth management segment:
	Customer list and other intangibles:
	Gross carrying amount	$	7,690		$	7,690		$	7,690
	Accumulated amortization	(1,265		)	(1,053		)	(840		)
	Net carrying amount	$	6,425		$	6,637		$	6,850
	Total other intangible assets, net	$	16,894		$	19,213		$	20,137
	Estimated amortization
	Actual in six months ended June 30, 2014	$	2,319
	Estimated remaining in 2014	2,051
	Estimated—2015	2,791
	Estimated—2016	2,180
	Estimated—2017	1,764
	Estimated—2018	1,544
	The core deposit intangibles recognized in connection with prior bank acquisitions are amortized over a ten-year period on an accelerated basis. The customer list intangibles recognized in connection with the purchase of life insurance premium finance assets in 2009 are being amortized over an 18-year period on an accelerated basis while the customer list intangibles recognized in connection with prior acquisitions within the wealth management segment are being amortized over a ten-year period on a straight-line basis.
	Total amortization expense associated with finite-lived intangibles totaled approximately $2.3 million for the six months ended June 30, 2014 and 2013.

Deposits

Deposits	6 Months Ended
	Jun. 30, 2014
Deposits [Abstract]	'
Deposits	'
	Deposits
	The following table is a summary of deposits as of the dates shown:
	(Dollars in thousands)	June 30,			December 31, 2013			June 30,
		2014						2013
	Balance:
	Non-interest bearing	$	3,072,430		$	2,721,771		$	2,450,659
	NOW	2,002,868			1,953,882			2,147,004
	Wealth management deposits	1,220,102			1,013,850			1,083,897
	Money market	3,591,540			3,359,999			3,037,354
	Savings	1,427,222			1,392,575			1,304,619
	Time certificates of deposit	4,242,214			4,226,712			4,342,321
	Total deposits	$	15,556,376		$	14,668,789		$	14,365,854
	Mix:
	Non-interest bearing	20		%	19		%	17		%
	NOW	13			13			15
	Wealth management deposits	8			7			8
	Money market	23			23			21
	Savings	9			9			9
	Time certificates of deposit	27			29			30
	Total deposits	100		%	100		%	100		%
	Wealth management deposits represent deposit balances (primarily money market accounts) at the Company’s subsidiary banks from brokerage customers of Wayne Hummer Investments, trust and asset management customers of CTC and brokerage customers from unaffiliated companies.

Notes_Payable_Federal_Home_Loa

Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes	'
	Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes
	The following table is a summary of notes payable, Federal Home Loan Bank advances, other borrowings and subordinated notes as of the dates shown:
	(Dollars in thousands)	June 30,		31-Dec-13		June 30,
		2014				2013
	Notes payable	$	—	$	364	$	1,729
	Federal Home Loan Bank advances	580,582		417,762		585,942
	Other borrowings:
	Securities sold under repurchase agreements	24,633		235,347		224,915
	Other	19,083		19,393		27,861
	Total other borrowings	43,716		254,740		252,776
	Subordinated notes	140,000		—		10,000
	Total notes payable, Federal Home Loan Bank advances, other borrowings and subordinated notes	$	764,298	$	672,866	$	850,447
	At June 30, 2014, the Company had no notes payable outstanding compared to $364,000 outstanding at December 31, 2013 and $1.7 million outstanding at June 30, 2013. In prior periods, notes payable represented an unsecured promissory note to a Great Lakes Advisor shareholder ("Unsecured Promissory Note") assumed by the Company as a result of the respective acquisition in 2013 and a loan agreement ("Agreement") with unaffiliated banks. Under the Unsecured Promissory Note, the Company made quarterly principal payments and paid interest at a rate of the federal funds rate plus 100 basis points. In the second quarter of 2014, the remaining balance of the Unsecured Promissory Note was paid off. At December 31, 2013 and June 30, 2013, this Unsecured Promissory Note had an outstanding balance of $364,000 and $729,000, respectively.
	Additionally, the Company previously had a $101.0 million loan agreement with unaffiliated banks. The Agreement consisted of a $100.0 million revolving credit facility, maturing on October 25, 2013, and a $1.0 million term loan maturing on June 1, 2015. The Agreement was amended in 2013, effectively extending the maturity date on the revolving credit facility from October 25, 2013 to November 6, 2014. The Company repaid and terminated its $1.0 million term loan at that time. At June 30, 2014 and December 31, 2013, no amount was outstanding on the $100.0 million revolving credit facility compared to $1.0 million of the term loan outstanding at June 30, 2013. Borrowings under the Agreement that are considered “Base Rate Loans” will bear interest at a rate equal to the higher of (1) 350 basis points and (2) for the applicable period, the highest of (a) the federal funds rate plus 100 basis points, (b) the lender’s prime rate plus 50 basis points, and (c) the Eurodollar Rate (as defined below) that would be applicable for an interest period of one month plus 150 basis points. Borrowings under the Agreement that are considered “Eurodollar Rate Loans” will bear interest at a rate equal to the higher of (1) the British Bankers Association’s LIBOR rate for the applicable period plus 250 basis points (the “Eurodollar Rate”) and (2) 350 basis points. A commitment fee is payable quarterly equal to 0.375% of the actual daily amount by which the lenders’ commitment under the revolving note exceeded the amount outstanding under such facility.
	Borrowings under the Agreement are secured by the stock of some of the banks and contain several restrictive covenants, including the maintenance of various capital adequacy levels, asset quality and profitability ratios, and certain restrictions on dividends and other indebtedness. At June 30, 2014, the Company was in compliance with all such covenants. The revolving credit facility is available to be utilized, as needed, to provide capital to fund continued growth at the Company’s banks and to serve as an interim source of funds for acquisitions, common stock repurchases or other general corporate purposes.
	Federal Home Loan Bank advances consist of obligations of the banks and are collateralized by qualifying residential real-estate and home equity loans and certain securities. FHLB advances are stated at par value of the debt adjusted for unamortized fair value adjustments recorded in connection with advances acquired through acquisitions.
	At June 30, 2014, December 31, 2013 and June 30, 2013, securities sold under repurchase agreements represent $24.6 million, $55.3 million and $44.9 million, respectively, of customer sweep accounts in connection with master repurchase agreements at the banks, and $180.0 million of short-term borrowings from brokers for the periods ending December 31, 2013 and June 30, 2013. During the second quarter of 2014, the Company paid off the $180.0 million short term borrowings from brokers. The Company records securities sold under repurchase agreements at their gross value and does not offset positions on the Consolidated Statements of Condition. As of June 30, 2014, the Company had pledged securities related to its customer balances in sweep accounts of $51.7 million, which exceeds the outstanding borrowings resulting in no net credit exposure. Securities pledged for customer balances in sweep accounts and short-term borrowings from brokers are maintained under the Company’s control and consist of U.S. Government agency, mortgage-backed and corporate securities. These securities are included in the available-for-sale securities portfolio as reflected on the Company’s Consolidated Statements of Condition.
	Other borrowings at June 30, 2014 represent a fixed-rate promissory note issued by the Company in August 2012 ("Fixed-rate Promissory Note") related to and secured by an office building owned by the Company. At June 30, 2014, the Fixed-rate Promissory Note had an outstanding balance of $19.1 million. Under the Fixed-rate Promissory Note, the Company will make monthly principal payments and pay interest at a fixed rate of 3.75% until maturity on September 1, 2017.
	Junior subordinated amortizing notes issued by the Company in connection with the issuance of the TEU's in December 2010 were paid off in 2013. At issuance, the junior subordinated notes were recorded at their initial principal balance of $44.7 million, net of issuance costs. These notes had a stated interest rate of 9.5% and required quarterly principal and interest payments of $4.3 million, with an initial payment of $4.6 million that was paid on March 15, 2011. The issuance costs were amortized to interest expense using the effective-interest method. The scheduled final installment payment on the notes was December 15, 2013. See Note 16 – Shareholders’ Equity and Earnings Per Share for further discussion of the TEUs.
	At June 30, 2014, the Company had outstanding subordinated notes totaling $140.0 million. During the second quarter of 2014, the Company issued $140.0 million of subordinated notes receiving $139.1 million in net proceeds. The notes have a stated interest rate of 5.00% and mature in June 2024. At December 31, 2013, the Company had no outstanding subordinated notes and at June 30, 2013, the Company had an obligation for one note issued in October 2005 with a remaining balance of $10.0 million and a maturity in May 2015. In November 2013, this note with the remaining balance of $10.0 million was paid-off prior to maturity. Interest on this note was calculated at a rate equal to three-month LIBOR plus 130 basis points.

Junior_Subordinated_Debentures

Junior Subordinated Debentures

6 Months Ended

Jun. 30, 2014

Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust [Abstract]

'

Junior Subordinated Debentures

'

Junior Subordinated Debentures

As of June 30, 2014, the Company owned 100% of the common securities of nine trusts, Wintrust Capital Trust III, Wintrust Statutory Trust IV, Wintrust Statutory Trust V, Wintrust Capital Trust VII, Wintrust Capital Trust VIII, Wintrust Capital Trust IX, Northview Capital Trust I, Town Bankshares Capital Trust I, and First Northwest Capital Trust I (the “Trusts”) set up to provide long-term financing. The Northview, Town and First Northwest capital trusts were acquired as part of the acquisitions of Northview Financial Corporation, Town Bankshares, Ltd., and First Northwest Bancorp, Inc., respectively. The Trusts were formed for purposes of issuing trust preferred securities to third-party investors and investing the proceeds from the issuance of the trust preferred securities and common securities solely in junior subordinated debentures issued by the Company (or assumed by the Company in connection with an acquisition), with the same maturities and interest rates as the trust preferred securities. The junior subordinated debentures are the sole assets of the Trusts. In each Trust, the common securities represent approximately 3% of the junior subordinated debentures and the trust preferred securities represent approximately 97% of the junior subordinated debentures.

The Trusts are reported in the Company’s consolidated financial statements as unconsolidated subsidiaries. Accordingly, in the Consolidated Statements of Condition, the junior subordinated debentures issued by the Company to the Trusts are reported as liabilities and the common securities of the Trusts, all of which are owned by the Company, are included in available-for-sale securities.

The following table provides a summary of the Company’s junior subordinated debentures as of June 30, 2014. The junior subordinated debentures represent the par value of the obligations owed to the Trusts.

(Dollars in thousands)

Common

Trust

Junior

Rate

Contractual rate

Issue

Maturity

Earliest

Securities

Preferred

Subordinated

Structure

at 6/30/2014

Date

Date

Redemption

Securities

Debentures

Date

Wintrust Capital Trust III

$

774

$

25,000

$

25,774

L+3.25

3.48

%

Apr-03

Apr-33

Apr-08

Wintrust Statutory Trust IV

619

20,000

20,619

L+2.80

3.03

%

Dec-03

Dec-33

Dec-08

Wintrust Statutory Trust V

1,238

40,000

41,238

L+2.60

2.83

%

May-04

May-34

Jun-09

Wintrust Capital Trust VII

1,550

50,000

51,550

L+1.95

2.18

%

Dec-04

Mar-35

Mar-10

Wintrust Capital Trust VIII

1,238

40,000

41,238

L+1.45

1.68

%

Aug-05

Sep-35

Sep-10

Wintrust Captial Trust IX

1,547

50,000

51,547

L+1.63

1.86

%

Sep-06

Sep-36

Sep-11

Northview Capital Trust I

186

6,000

6,186

L+3.00

3.23

%

Aug-03

Nov-33

Aug-08

Town Bankshares Capital Trust I

186

6,000

6,186

L+3.00

3.23

%

Aug-03

Nov-33

Aug-08

First Northwest Capital Trust I

155

5,000

5,155

L+3.00

3.23

%

May-04

May-34

May-09

Total

$

249,493

2.42

%

The junior subordinated debentures totaled $249.5 million at June 30, 2014, December 31, 2013 and June 30, 2013.

The interest rates on the variable rate junior subordinated debentures are based on the three-month LIBOR rate and reset on a quarterly basis. At June 30, 2014, the weighted average contractual interest rate on the junior subordinated debentures was 2.42%. The Company entered into interest rate swaps and caps with an aggregate notional value of $225 million to hedge the variable cash flows on certain junior subordinated debentures. Two of these interest rate caps, which were purchased in 2013 with an aggregate notional amount of $90 million, replaced two interest rate swaps that matured in September 2013. The hedge-adjusted rate on the junior subordinated debentures as of June 30, 2014, was 3.14%. Distributions on the common and preferred securities issued by the Trusts are payable quarterly at a rate per annum equal to the interest rates being earned by the Trusts on the junior subordinated debentures. Interest expense on the junior subordinated debentures is deductible for income tax purposes.

The Company has guaranteed the payment of distributions and payments upon liquidation or redemption of the trust preferred securities, in each case to the extent of funds held by the Trusts. The Company and the Trusts believe that, taken together, the obligations of the Company under the guarantees, the junior subordinated debentures, and other related agreements provide, in the aggregate, a full, irrevocable and unconditional guarantee, on a subordinated basis, of all of the obligations of the Trusts under the trust preferred securities. Subject to certain limitations, the Company has the right to defer the payment of interest on the junior subordinated debentures at any time, or from time to time, for a period not to exceed 20 consecutive quarters. The trust preferred securities are subject to mandatory redemption, in whole or in part, upon repayment of the junior subordinated debentures at maturity or their earlier redemption. The junior subordinated debentures are redeemable in whole or in part prior to maturity at any time after the earliest redemption dates shown in the table, and earlier at the discretion of the Company if certain conditions are met, and, in any event, only after the Company has obtained Federal Reserve approval, if then required under applicable guidelines or regulations.

The junior subordinated debentures, subject to certain limitations, qualify as Tier 1 capital of the Company for regulatory purposes. The amount of junior subordinated debentures and certain other capital elements in excess of those certain limitations could be included in Tier 2 capital, subject to restrictions. At June 30, 2014, all of the junior subordinated debentures, net of the Common Securities, were included in the Company’s Tier 1 regulatory capital.

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management.
	The three reportable segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. In addition, each segment’s customer base has varying characteristics and each segment has a different regulatory environment. While the Company’s management monitors each of the fifteen bank subsidiaries’ operations and profitability separately, these subsidiaries have been aggregated into one reportable operating segment due to the similarities in products and services, customer base, operations, profitability measures, and economic characteristics.
	As of December 31, 2013, management made changes in its approach to measure segment profitability. For purposes of internal segment profitability, management allocates certain intersegment and parent company balances. Management allocates a portion of revenues to the specialty finance segment related to loans originated by the specialty finance segment and sold to the community banking segment. Similarly, for purposes of analyzing the contribution from the wealth management segment, management allocates a portion of the net interest income earned by the community banking segment on deposit balances of customers of the wealth management segment to the wealth management segment. See Note 9 — Deposits, for more information on these deposits. Finally, expenses incurred at the Wintrust parent company are allocated to each segment based on each segment's risk-weighted assets.
	The segment financial information provided in the following tables has been derived from the internal profitability reporting system used by management to monitor and manage the financial performance of the Company. The accounting policies of the segments are substantially similar to as those described in “Summary of Significant Accounting Policies” in Note 1 of the Company’s 2013 Form 10-K. The Company evaluates segment performance based on after-tax profit or loss and other appropriate profitability measures common to each segment.
	The following is a summary of certain operating information for reportable segments:
		Three months ended						$ Change in			% Change  in
	(Dollars in thousands)	June 30,			June 30,			Contribution			Contribution
		2014			2013
	Net interest income:
	Community Banking	$	121,228		$	111,366		$	9,862		9	%
	Specialty Finance	19,792			17,384			2,408			14
	Wealth Management	4,006			3,281			725			22
	Total Operating Segments	145,026			132,031			12,995			10
	Intersegment Eliminations	4,154			3,793			361			10
	Consolidated net interest income	$	149,180		$	135,824		$	13,356		10	%
	Non-interest income:
	Community Banking	$	33,337		$	45,365		$	(12,028	)	(27	)%
	Specialty Finance	8,455			8,193			262			3
	Wealth Management	19,235			16,681			2,554			15
	Total Operating Segments	61,027			70,239			(9,212		)	(13	)
	Intersegment Eliminations	(6,925		)	(6,244		)	(681		)	(11	)
	Consolidated non-interest income	$	54,102		$	63,995		$	(9,893	)	(15	)%
	Net revenue:
	Community Banking	$	154,565		$	156,731		$	(2,166	)	(1	)%
	Specialty Finance	28,247			25,577			2,670			10
	Wealth Management	23,241			19,962			3,279			16
	Total Operating Segments	206,053			202,270			3,783			2
	Intersegment Eliminations	(2,771		)	(2,451		)	(320		)	(13	)
	Consolidated net revenue	$	203,282		$	199,819		$	3,463		2	%
	Segment profit:
	Community Banking	$	24,628		$	21,995		$	2,633		12	%
	Specialty Finance	10,302			9,692			610			6
	Wealth Management	3,611			2,620			991			38
	Consolidated net income	$	38,541		$	34,307		$	4,234		12	%
	Segment assets:
	Community Banking	$	15,669,443		$	14,710,628		$	958,815		7	%
	Specialty Finance	2,703,761			2,418,208			285,553			12
	Wealth Management	522,477			484,710			37,767			8
	Consolidated total assets	$	18,895,681		$	17,613,546		$	1,282,135		7	%
		Six months ended						$ Change in			% Change  in
	(Dollars in thousands)	June 30,			June 30,			Contribution			Contribution
		2014			2013
	Net interest income:
	Community Banking	$	237,983		$	217,596		$	20,387		9	%
	Specialty Finance	39,004			34,866			4,138			12
	Wealth Management	8,105			6,728			1,377			20
	Total Operating Segments	285,092			259,190			25,902			10
	Intersegment Eliminations	8,094			7,347			747			10
	Consolidated net interest income	$	293,186		$	266,537		$	26,649		10	%
	Non-interest income:
	Community Banking	$	60,656		$	85,966		$	(25,310	)	(29	)%
	Specialty Finance	16,336			15,497			839			5
	Wealth Management	36,176			32,124			4,052			13
	Total Operating Segments	113,168			133,587			(20,419		)	(15	)
	Intersegment Eliminations	(13,537		)	(12,213		)	(1,324		)	(11	)
	Consolidated non-interest income	$	99,631		$	121,374		$	(21,743	)	(18	)%
	Net revenue:
	Community Banking	$	298,639		$	303,562		$	(4,923	)	(2	)%
	Specialty Finance	55,340			50,363			4,977			10
	Wealth Management	44,281			38,852			5,429			14
	Total Operating Segments	398,260			392,777			5,483			1
	Intersegment Eliminations	(5,443		)	(4,866		)	(577		)	(12	)
Consolidated net revenue	$	392,817		$	387,911		$	4,906		1	%
Segment profit:
Community Banking	$	47,209		$	42,974		$	4,235		10	%
Specialty Finance	19,284			18,321			963			5
Wealth Management	6,548			5,064			1,484			29
Consolidated net income	$	73,041		$	66,359		$	6,682		10	%

Derivative_Financial_Instrumen

Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	The Company primarily enters into derivative financial instruments as part of its strategy to manage its exposure to changes in interest rates. Derivative instruments represent contracts between parties that result in one party delivering cash to the other party based on a notional amount and an underlying term (such as a rate, security price or price index) specified in the contract. The amount of cash delivered from one party to the other is determined based on the interaction of the notional amount of the contract with the underlying term. Derivatives are also implicit in certain contracts and commitments.
	The derivative financial instruments currently used by the Company to manage its exposure to interest rate risk include: (1) interest rate swaps and caps to manage the interest rate risk of certain fixed and variable rate assets and variable rate liabilities; (2) interest rate lock commitments provided to customers to fund certain mortgage loans to be sold into the secondary market; (3) forward commitments for the future delivery of such mortgage loans to protect the Company from adverse changes in interest rates and corresponding changes in the value of mortgage loans held-for-sale; and (4) covered call options to economically hedge specific investment securities and receive fee income effectively enhancing the overall yield on such securities. The Company also enters into derivatives (typically interest rate swaps) with certain qualified borrowers to facilitate the borrowers’ risk management strategies and concurrently enters into mirror-image derivatives with a third party counterparty, effectively making a market in the derivatives for such borrowers. Additionally, the Company enters into foreign currency contracts to manage foreign exchange risk associated with certain foreign currency denominated assets.
	The Company has purchased interest rate cap derivatives to hedge or manage its own risk exposures. Certain interest rate cap derivatives have been designated as cash flow hedge derivatives of the variable cash outflows associated with interest expense on the Company’s junior subordinated debentures and certain deposits. Other cap derivatives are not designated for hedge accounting but are economic hedges of the Company's overall portfolio, therefore any mark to market changes in the value of these caps are recognized in earnings.
	Below is a summary of the interest rate cap derivatives held by the Company as of June 30, 2014:
	(Dollars in thousands)
			Notional			Accounting	Fair Value as of
	Effective Date	Maturity Date	Amount			Treatment	30-Jun-14
	30-Sep-11	30-Sep-14	$	20,000		Cash Flow Hedging	$	—
	30-Sep-11	30-Sep-14	40,000			Cash Flow Hedging	—
	3-May-12	3-May-15	77,000			Non-Hedge Designated	—
	3-May-12	3-May-16	215,000			Non-Hedge Designated	172
	1-Jun-12	1-Apr-15	96,530			Non-Hedge Designated	—
	29-Aug-12	29-Aug-16	216,500			Cash Flow Hedging	389
	22-Feb-13	22-Aug-16	56,500			Non-Hedge Designated	134
	22-Feb-13	22-Aug-16	43,500			Cash Flow Hedging	103
	21-Mar-13	21-Mar-17	100,000			Non-Hedge Designated	686
	16-May-13	16-Nov-16	75,000			Non-Hedge Designated	288
	15-Sep-13	15-Sep-17	50,000			Cash Flow Hedging	637
	30-Sep-13	30-Sep-17	40,000			Cash Flow Hedging	534
			$	1,030,030			$	2,943
	The Company recognizes derivative financial instruments in the consolidated financial statements at fair value regardless of the purpose or intent for holding the instrument. The Company records derivative assets and derivative liabilities on the Consolidated Statements of Condition within accrued interest receivable and other assets and accrued interest payable and other liabilities, respectively. Changes in the fair value of derivative financial instruments are either recognized in income or in shareholders’ equity as a component of other comprehensive income depending on whether the derivative financial instrument qualifies for hedge accounting and, if so, whether it qualifies as a fair value hedge or cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in income in the same period and in the same income statement line as changes in the fair values of the hedged items that relate to the hedged risk(s). Changes in fair values of derivative financial instruments accounted for as cash flow hedges, to the extent they are effective hedges, are recorded as a component of other comprehensive income, net of deferred taxes, and reclassified to earnings when the hedged transaction affects earnings. Changes in fair values of derivative financial instruments not designated in a hedging relationship pursuant to ASC 815, including changes in fair value related to the ineffective portion of cash flow hedges, are reported in non-interest income during the period of the change. Derivative financial instruments are valued by a third party and are corroborated through comparison with valuations provided by the respective counterparties. Fair values of certain mortgage banking derivatives (interest rate lock commitments and forward commitments to sell mortgage loans) are estimated based on changes in mortgage interest rates from the date of the loan commitment. The fair value of foreign currency derivatives is computed based on changes in foreign currency rates stated in the contract compared to those prevailing at the measurement date.
	The table below presents the fair value of the Company’s derivative financial instruments as of June 30, 2014, December 31, 2013 and June 30, 2013:
		Derivative Assets												Derivative Liabilities
		Fair Value												Fair Value
	(Dollars in thousands)	June 30,				31-Dec-13				June 30,				June 30,				31-Dec-13				June 30,
		2014								2013				2014								2013
	Derivatives designated as hedging instruments under ASC 815:
	Interest rate derivatives designated as Cash Flow Hedges	$	1,663			$	1,776			$	2,146			$	2,727			$	3,160			$	4,416
	Interest rate derivatives designated as Fair Value Hedges	65				107				94				3				1				—
	Total derivatives designated as hedging instruments under ASC 815	$	1,728			$	1,883			$	2,240			$	2,730			$	3,161			$	4,416
	Derivatives not designated as hedging instruments under ASC 815:
	Interest rate derivatives	$	35,733			$	36,073			$	35,878			$	34,003			$	31,646			$	29,372
	Interest rate lock commitments	13,479				7,500				14,579				9				147				3,208
	Forward commitments to sell mortgage loans	27				2,761				7,835				6,901				2,310				583
	Foreign exchange contracts	—				4				22				7				—				75
	Total derivatives not designated as hedging instruments under ASC 815	$	49,239			$	46,338			$	58,314			$	40,920			$	34,103			$	33,238
	Total derivatives	$	50,967			$	48,221			$	60,554			$	43,650			$	37,264			$	37,654
	Cash Flow Hedges of Interest Rate Risk
	The Company’s objectives in using interest rate derivatives are to add stability to net interest income and to manage its exposure to interest rate movements. To accomplish these objectives, the Company primarily uses interest rate swaps and interest rate caps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without the exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of payments at the end of each period in which the interest rate specified in the contract exceeds the agreed upon strike price.
	During the first quarter of 2014, the Company designated two existing interest rate cap derivatives as cash flow hedges of variable rate deposits. The cap derivatives had notional amounts of $216.5 million and $43.5 million, respectively, both maturing in August 2016. Additionally, as of June 30, 2014, the Company had two interest rate swaps and four interest rate caps designated as hedges of the variable cash outflows associated with interest expense on the Company’s junior subordinated debentures. The effective portion of changes in the fair value of these cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified to interest expense as interest payments are made on the Company’s variable rate junior subordinated debentures. The changes in fair value (net of tax) are separately disclosed in the Consolidated Statements of Comprehensive Income. The ineffective portion of the change in fair value of these derivatives is recognized directly in earnings; however, no hedge ineffectiveness was recognized during the six months ended June 30, 2014 or June 30, 2013. The Company uses the hypothetical derivative method to assess and measure hedge effectiveness.
	The table below provides details on each of these cash flow hedges as of June 30, 2014:
		30-Jun-14
	(Dollars in thousands)	Notional				Fair Value
	Maturity Date	Amount				Asset (Liability)
	Interest Rate Swaps:
	Sep-16	50,000				(1,795		)
	Oct-16	25,000				(932		)
	Total Interest Rate Swaps	75,000				(2,727		)
	Interest Rate Caps:
	Sep-14	20,000				—
	Sep-14	40,000				—
	Aug-16	43,500				103
	Aug-16	216,500				389
	Sep-17	50,000				637
	Sep-17	40,000				534
	Total Interest Rate Caps	410,000				1,663
	Total Cash Flow Hedges	$	485,000			$	(1,064	)
	A rollforward of the amounts in accumulated other comprehensive loss related to interest rate derivatives designated as cash flow hedges follows:
		Three months ended								Six months ended
	(Dollars in thousands)	June 30,				June 30,				June 30,				June 30,
		2014				2013				2014				2013
	Unrealized loss at beginning of period	$	(4,069	)		$	(7,199	)		$	(3,971	)		$	(8,673	)
Amount reclassified from accumulated other comprehensive loss to interest expense on junior subordinated debentures	521				1,583				1,014				3,122
Amount of (loss)/gain recognized in other comprehensive income	(1,147		)		586				(1,738		)		521
Unrealized loss at end of period	$	(4,695	)		$	(5,030	)		$	(4,695	)		$	(5,030	)
As of June 30, 2014, the Company estimates that during the next twelve months, $1.8 million will be reclassified from accumulated other comprehensive loss as an increase to interest expense.
Fair Value Hedges of Interest Rate Risk
Interest rate swaps designated as fair value hedges involve the payment of fixed amounts to a counterparty in exchange for the Company receiving variable payments over the life of the agreements without the exchange of the underlying notional amount. As of June 30, 2014, the Company has three interest rate swaps with an aggregate notional amount of $5.5 million that were designated as fair value hedges associated with fixed rate commercial franchise loans.
For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. The Company includes the gain or loss on the hedged item in the same line item as the offsetting loss or gain on the related derivatives. The Company recognized a net loss of $1,000 and a net gain of $10,000 in other income related to hedge ineffectiveness for the three months ended June 30, 2014 and 2013, respectively. and a net loss of $3,000 and a net gain of $9,000 for the respective year-to-date periods. The Company also recognized a net decrease in interest income of $10,000 and a net increase in interest income of $7,000 for the respective three month periods ended June 30, 2014 and 2013 related to net settlements on the derivatives. On a year-to-date basis, the Company recognized a net decrease in interest income of $20,000 and a net increase in interest income of $5,000 for the respective six month periods ended June 30, 2014 and 2013 related to net settlements on the derivatives.
On June 1, 2013, the Company de-designated a $96.5 million cap which was previously designated as a fair value hedge of interest rate risk associated with an embedded cap in one of the Company’s floating rate loans. The hedged loan was restructured which resulted in the interest rate cap no longer qualifying as an effective fair value hedge. As such, the interest rate cap derivative is no longer accounted for under hedge accounting and all changes in value subsequent to June 1, 2013 are recorded in earnings. Additionally, the Company recorded amortization of the basis in the previously hedged item as a reduction to interest income of $43,000 and $86,000 in the three and six month periods ended June 30, 2014, respectively.
The following table presents the gain/(loss) and hedge ineffectiveness recognized on derivative instruments and the related hedged items that are designated as a fair value hedge accounting relationship as of June 30, 2014 and 2013:
(Dollars in thousands)	Location of Gain/(Loss)		Amount of Gain/(Loss) Recognized								Amount of Gain/(Loss) Recognized								Income Statement Gain/
	Recognized in Income on		in Income on Derivative								in Income on Hedged Item								(Loss) due to Hedge
	Derivative		Three Months Ended								Three Months Ended								Ineffectiveness
																			Three Months Ended
Derivatives in Fair Value
Hedging Relationships			June 30,				June 30,				June 30,				June 30,				June 30,				June 30,
			2014				2013				2014				2013				2014				2013
Interest rate products	Trading (losses)/gains, net		$	(26	)		$	67			$	25			$	(57	)		$	(1	)		$	10
(Dollars in thousands)	Location of Gain/(Loss)		Amount of Gain/(Loss) Recognized								Amount of Gain/(Loss) Recognized								Income Statement Gain/
	Recognized in Income on		in Income on Derivative								in Income on Hedged Item								(Loss) due to Hedge
	Derivative		Six Months Ended								Six Months Ended								Ineffectiveness
																			Six Months Ended
Derivatives in Fair Value
Hedging Relationships			June 30,				June 30,				June 30,				June 30,				June 30,				June 30,
			2014				2013				2014				2013				2014				2013
Interest rate products	Trading (losses)/gains, net		$	(43	)		$	56			$	40			$	(47	)		$	(3	)		$	9
Non-Designated Hedges
The Company does not use derivatives for speculative purposes. Derivatives not designated as hedges are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings.
Interest Rate Derivatives—The Company has interest rate derivatives, including swaps and option products, resulting from a service the Company provides to certain qualified borrowers. The Company’s banking subsidiaries execute certain derivative products (typically interest rate swaps) directly with qualified commercial borrowers to facilitate their respective risk management strategies. For example, these arrangements allow the Company’s commercial borrowers to effectively convert a variable rate loan to a fixed rate. In order to minimize the Company’s exposure on these transactions, the Company simultaneously executes offsetting derivatives with third parties. In most cases, the offsetting derivatives have mirror-image terms, which result in the positions’ changes in fair value substantially offsetting through earnings each period. However, to the extent that the derivatives are not a mirror-image and because of differences in counterparty credit risk, changes in fair value will not completely offset resulting in some earnings impact each period. Changes in the fair value of these derivatives are included in non-interest income. At June 30, 2014, the Company had interest rate derivative transactions with an aggregate notional amount of approximately $2.9 billion (all interest rate swaps and caps with customers and third parties) related to this program. These interest rate derivatives had maturity dates ranging from July 2014 to January 2033.
Mortgage Banking Derivatives—These derivatives include interest rate lock commitments provided to customers to fund certain mortgage loans to be sold into the secondary market and forward commitments for the future delivery of such loans. It is the Company’s practice to enter into forward commitments for the future delivery of a portion of our residential mortgage loan production when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on its commitments to fund the loans as well as on its portfolio of mortgage loans held-for-sale. The Company’s mortgage banking derivatives have not been designated as being in hedge relationships. At June 30, 2014, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of approximately $620.5 million and interest rate lock commitments with an aggregate notional amount of approximately $406.0 million. Additionally, the Company’s total mortgage loans held-for-sale at June 30, 2014 was $363.6 million. The fair values of these derivatives were estimated based on changes in mortgage rates from the dates of the commitments. Changes in the fair value of these mortgage banking derivatives are included in mortgage banking revenue.
Foreign Currency Derivatives—These derivatives include foreign currency contracts used to manage the foreign exchange risk associated with foreign currency denominated assets and transactions. Foreign currency contracts, which include spot and forward contracts, represent agreements to exchange the currency of one country for the currency of another country at an agreed-upon price on an agreed-upon settlement date. As a result of fluctuations in foreign currencies, the U.S. dollar-equivalent value of the foreign currency denominated assets or forecasted transactions increase or decrease. Gains or losses on the derivative instruments related to these foreign currency denominated assets or forecasted transactions are expected to substantially offset this variability. As of June 30, 2014 the Company held foreign currency derivatives with an aggregate notional amount of approximately $1.2 million.
Other Derivatives—Periodically, the Company will sell options to a bank or dealer for the right to purchase certain securities held within the banks’ investment portfolios (covered call options). These option transactions are designed primarily as an economic hedge to increase the total return associated with the investment securities portfolio. These options do not qualify as hedges pursuant to ASC 815, and, accordingly, changes in fair value of these contracts are recognized in non-interest income. There were no covered call options outstanding as of June 30, 2014, December 31, 2013 or June 30, 2013.
As discussed above, the Company has entered into interest rate cap derivatives to protect the Company in a rising rate environment against increased margin compression due to the repricing of variable rate liabilities and lack of repricing of fixed rate loans and/or securities. As of June 30, 2014, the Company held six interest rate cap derivative contracts, which are not designated in hedge relationships, with an aggregate notional value of $620.0 million.
Amounts included in the Consolidated Statements of Income related to derivative instruments not designated in hedge relationships were as follows:
(Dollars in thousands)			Three Months Ended								Six Months Ended
Derivative	Location in income statement		June 30,				June 30,				June 30,				June 30,
			2014				2013				2014				2013
Interest rate swaps and caps	Trading (losses)/gains, net		$	(737	)		$	3,217			$	(1,414	)		$	2,920
Mortgage banking derivatives	Mortgage banking revenue		(4,885		)		(2,368		)		(1,208		)		(3,038		)
Covered call options	Fees from covered call options		1,244				993				2,786				2,632
Foreign exchange contracts	Trading (losses)/gains, net		(10		)		79				(11		)		(67		)
Credit Risk
Derivative instruments have inherent risks, primarily market risk and credit risk. Market risk is associated with changes in interest rates and credit risk relates to the risk that the counterparty will fail to perform according to the terms of the agreement. The amounts potentially subject to market and credit risks are the streams of interest payments under the contracts and the market value of the derivative instrument and not the notional principal amounts used to express the volume of the transactions. Market and credit risks are managed and monitored as part of the Company's overall asset-liability management process, except that the credit risk related to derivatives entered into with certain qualified borrowers is managed through the Company's standard loan underwriting process since these derivatives are secured through collateral provided by the loan agreements. Actual exposures are monitored against various types of credit limits established to contain risk within parameters. When deemed necessary, appropriate types and amounts of collateral are obtained to minimize credit exposure.
The Company has agreements with certain of its interest rate derivative counterparties that contain cross-default provisions, which provide that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has agreements with certain of its derivative counterparties that contain a provision allowing the counterparty to terminate the derivative positions if the Company fails to maintain its status as a well or adequately capitalized institution, which would require the Company to settle its obligations under the agreements. As of June 30, 2014 the fair value of interest rate derivatives in a net liability position, which includes accrued interest related to these agreements, was $33.7 million. If the Company had breached any of these provisions at June 30, 2014 it would have been required to settle its obligations under the agreements at the termination value and would have been required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparty.
The Company's is also exposed to the credit risk of its commercial borrowers who are counterparties to interest rate derivatives with the banks. This counterparty risk related to the commercial borrowers is managed and monitored through the banks' standard underwriting process applicable to loans since these derivatives are secured through collateral provided by the loan agreement. The counterparty risk associated with the mirror-image swaps executed with third parties is monitored and managed in connection with the Company's overall asset liability management process.
The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative assets and liabilities on the Consolidated Statements of Condition. The tables below summarize the Company's interest rate derivatives and offsetting positions as of the dates shown.
	Derivative Assets												Derivative Liabilities
	Fair Value												Fair Value
(Dollars in thousands)	June 30,				31-Dec-13				June 30,				June 30,				31-Dec-13				June 30,
	2014								2013				2014								2013
Gross Amounts Recognized	$	37,461			$	37,956			$	38,118			$	36,733			$	34,807			$	33,788
Less: Amounts offset in the Statements of Financial Condition	$	—			$	—			$	—			$	—			$	—			$	—
Net amount presented in the Statements of Financial Condition	$	37,461			$	37,956			$	38,118			$	36,733			$	34,807			$	33,788
Gross amounts not offset in the Statements of Financial Condition
Offsetting Derivative Positions	(3,738		)		(8,826		)		(8,192		)		(3,738		)		(8,826		)		(8,192		)
Securities Collateral Posted (1)	—				—				—				(26,354		)		(25,981		)		(25,027		)
Net Credit Exposure	$	33,723			$	29,130			$	29,926			$	6,641			$	—			$	569
(1) As of December 31, 2013, the Company posted securities collateral of $34.6 million which resulted in excess collateral with its counterparties. For purposes of this disclosure, the amount of posted collateral is limited to the amount offsetting the derivative liability.

Fair_Values_of_Assets_and_Liab

Fair Values of Assets and Liabilities	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Values of Assets and Liabilities	'
	Fair Values of Assets and Liabilities
	The Company measures, monitors and discloses certain of its assets and liabilities on a fair value basis. These financial assets and financial liabilities are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the assumptions used to determine fair value. These levels are:
	•	Level 1—unadjusted quoted prices in active markets for identical assets or liabilities.
	•	Level 2—inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability or inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	•	Level 3—significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
	A financial instrument’s categorization within the above valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the assets or liabilities. Following is a description of the valuation methodologies used for the Company’s assets and liabilities measured at fair value on a recurring basis.
	Available-for-sale and trading account securities—Fair values for available-for-sale and trading securities are typically based on prices obtained from independent pricing vendors. Securities measured with these valuation techniques are generally classified as Level 2 of the fair value hierarchy. Typically, standard inputs such as benchmark yields, reported trades for similar securities, issuer spreads, benchmark securities, bids, offers and reference data including market research publications are used to fair value a security. When these inputs are not available, broker/dealer quotes may be obtained by the vendor to determine the fair value of the security. We review the vendor’s pricing methodologies to determine if observable market information is being used, versus unobservable inputs. Fair value measurements using significant inputs that are unobservable in the market due to limited activity or a less liquid market are classified as Level 3 in the fair value hierarchy.
	The Company’s Investment Operations Department is responsible for the valuation of Level 3 available-for-sale securities. The methodology and variables used as inputs in pricing Level 3 securities are derived from a combination of observable and unobservable inputs. The unobservable inputs are determined through internal assumptions that may vary from period to period due to external factors, such as market movement and credit rating adjustments.
	At June 30, 2014, the Company classified $38.1 million of municipal securities as Level 3. These municipal securities are bond issues for various municipal government entities, including park districts, located in the Chicago metropolitan area and southeastern Wisconsin and are privately placed, non-rated bonds without CUSIP numbers. The Company’s methodology for pricing the non-rated bonds focuses on three distinct inputs: equivalent rating, yield and other pricing terms. To determine the rating for a given non-rated municipal bond, the Investment Operations Department references a publicly issued bond by the same issuer if available. A reduction is then applied to the rating obtained from the comparable bond, as the Company believes if liquidated, a non-rated bond would be valued less than a similar bond with a verifiable rating. The reduction applied by the Company is one complete rating grade (i.e. a “AA” rating for a comparable bond would be reduced to “A” for the Company’s valuation). In the second quarter of 2014, all of the ratings derived in the above process by Investment Operations were BBB or better, for both bonds with and without comparable bond proxies. The fair value measurement of municipal bonds is sensitive to the rating input, as a higher rating typically results in an increased valuation. The remaining pricing inputs used in the bond valuation are observable. Based on the rating determined in the above process, Investment Operations obtains a corresponding current market yield curve available to market participants. Other terms including coupon, maturity date, redemption price, number of coupon payments per year, and accrual method are obtained from the individual bond term sheets. Certain municipal bonds held by the Company at June 30, 2014 have a call date that has passed, and are now continuously callable. When valuing these bonds, the fair value is capped at par value as the Company assumes a market participant would not pay more than par for a continuously callable bond.
	At June 30, 2014, the Company held $24.2 million of equity securities classified as Level 3. The securities in Level 3 are primarily comprised of auction rate preferred securities. The Company utilizes an independent pricing vendor to provide a fair market valuation of these securities. The vendor’s valuation methodology includes modeling the contractual cash flows of the underlying preferred securities and applying a discount to these cash flows by a credit spread derived from the market price of the securities underlying debt. At June 30, 2014, the vendor considered five different securities whose implied credit spreads were believed to provide a proxy for the Company’s auction rate preferred securities. The credit spreads ranged from 1.24%-2.10% with an average of 1.72% which was added to three-month LIBOR to be used as the discount rate input to the vendor’s model. Fair value of the securities is sensitive to the discount rate utilized as a higher discount rate results in a decreased fair value measurement.
	Mortgage loans held-for-sale—Mortgage loans originated by Wintrust Mortgage, a division of Barrington Bank and Trust Company, N.A. ("Barrington Bank"), are carried at fair value. The fair value of mortgage loans held-for-sale is determined by reference to investor price sheets for loan products with similar characteristics.
	Mortgage servicing rights—Fair value for mortgage servicing rights is determined utilizing a third party valuation model which stratifies the servicing rights into pools based on product type and interest rate. The fair value of each servicing rights pool is calculated based on the present value of estimated future cash flows using a discount rate commensurate with the risk associated with that pool, given current market conditions. At June 30, 2014, the Company classified $8.2 million of mortgage servicing rights as Level 3. The weighted average discount rate used as an input to value the pool of mortgage servicing rights at June 30, 2014 was 9.66% with discount rates applied ranging from 9.5%-13.0%. The higher the rate utilized to discount estimated future cash flows, the lower the fair value measurement. Additionally, fair value estimates include assumptions about prepayment speeds which ranged from 11%-16% or a weighted average prepayment speed of 12.68% used as an input to value the pool of mortgage servicing rights at June 30, 2014. Prepayment speeds are inversely related to the fair value of mortgage servicing rights as an increase in prepayment speeds results in a decreased valuation.
	Derivative instruments—The Company’s derivative instruments include interest rate swaps and caps, commitments to fund mortgages for sale into the secondary market (interest rate locks), forward commitments to end investors for the sale of mortgage loans and foreign currency contracts. Interest rate swaps and caps are valued by a third party, using models that primarily use market observable inputs, such as yield curves, and are corroborated by comparison with valuations provided by the respective counterparties. The fair value for mortgage derivatives is based on changes in mortgage rates from the date of the commitments. The fair value of foreign currency derivatives is computed based on change in foreign currency rates stated in the contract compared to those prevailing at the measurement date. The Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.
	Nonqualified deferred compensation assets—The underlying assets relating to the nonqualified deferred compensation plan are included in a trust and primarily consist of non-exchange traded institutional funds which are priced based by an independent third party service.
	The following tables present the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented:
		June 30, 2014
	(Dollars in thousands)	Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury	$	388,415		$	—		$	388,415		$	—
	U.S. Government agencies	766,000			—			766,000			—
	Municipal	176,107			—			138,054			38,053
	Corporate notes	135,303			—			135,303			—
	Mortgage-backed	303,563			—			303,563			—
	Equity securities	54,852			—			30,700			24,152
	Trading account securities	2,234			—			2,234			—
	Mortgage loans held-for-sale	363,627			—			363,627			—
	Mortgage servicing rights	8,227			—			—			8,227
	Nonqualified deferred compensation assets	7,850			—			7,850			—
	Derivative assets	50,967			—			50,967			—
	Total	$	2,257,145		$	—		$	2,186,713		$	70,432
	Derivative liabilities	$	43,650		$	—		$	43,650		$	—
			31-Dec-13
	(Dollars in thousands)		Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury		$	336,095		$	—		$	336,095		$	—
	U.S. Government agencies		895,688			—			895,688			—
	Municipal		152,716			—			116,330			36,386
	Corporate notes		135,038			—			135,038			—
	Mortgage-backed		605,225			—			605,225			—
	Equity securities		51,528			—			29,365			22,163
	Trading account securities		497			—			497			—
	Mortgage loans held-for-sale		332,485			—			332,485			—
	Mortgage servicing rights		8,946			—			—			8,946
	Nonqualified deferred compensation assets		7,222			—			7,222			—
	Derivative assets		48,221			—			48,221			—
	Total		$	2,573,661		$	—		$	2,506,166		$	67,495
	Derivative liabilities		$	37,264		$	—		$	37,264		$	—
		30-Jun-13
	(Dollars in thousands)	Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury	$	210,975		$	—		$	210,975		$	—
	U.S. Government agencies	958,458			—			958,458			—
	Municipal	150,127			—			117,695			32,432
	Corporate notes	141,933			—			141,933			—
	Mortgage-backed	332,767			—			332,767			—
	Equity securities	49,564			—			27,136			22,428
	Trading account securities	659			—			659			—
	Mortgage loans held-for-sale	525,027			—			525,027			—
	Mortgage servicing rights	8,636			—			—			8,636
	Nonqualified deferred compensation assets	6,793			—			6,793			—
	Derivative assets	60,554			—			60,554			—
	Total	$	2,445,493		$	—		$	2,381,997		$	63,496
	Derivative liabilities	$	37,654		$	—		$	37,654		$	—
The aggregate remaining contractual principal balance outstanding as of June 30, 2014, December 31, 2013 and June 30, 2013 for mortgage loans held-for-sale measured at fair value under ASC 825 was $340.5 million, $314.9 million and $539.5 million, respectively, while the aggregate fair value of mortgage loans held-for-sale was $363.6 million, $332.5 million and $525.0 million, for the same respective periods, as shown in the above tables. There were no nonaccrual loans or loans past due greater than 90 days and still accruing in the mortgage loans held-for-sale portfolio measured at fair value as of June 30, 2014, December 31, 2013 and June 30, 2013.
The changes in Level 3 assets measured at fair value on a recurring basis during the three and six months ended June 30, 2014 and 2013 are summarized as follows:
				Equity securities			Mortgage
(Dollars in thousands)	Municipal						servicing rights
Balance at March 31, 2014	$	39,772		$	23,438		$	8,719
Total net gains (losses) included in:
Net loss (1)	—			—			(492		)
Other comprehensive income	73			714			—
Purchases	1,606			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	(3,398		)	—			—
Net transfers into/(out of) Level 3	—			—			—
Balance at June 30, 2014	$	38,053		$	24,152		$	8,227
-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
				Equity securities			Mortgage
(Dollars in thousands)	Municipal						servicing rights
Balance at January 1, 2014	$	36,386		$	22,163		$	8,946
Total net gains (losses) included in:
Net loss (1)	—			—			(719		)
Other comprehensive income	220			1,989			—
Purchases	4,966			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	(3,519		)	—			—
Net transfers into/(out of) Level 3	—			—			—
Balance at June 30, 2014	$	38,053		$	24,152		$	8,227
-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
				Equity securities			Mortgage
(Dollars in thousands)	Municipal						servicing rights
Balance at March 31, 2013	$	32,324		$	24,470		$	7,344
Total net gains (losses) included in:
Net income (1)	—			—			1,292
Other comprehensive income	(302		)	(2,042		)	—
Purchases	660			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	(250		)	—			—
Net transfers into/(out of) Level 3	—			—			—
Balance at June 30, 2013	$	32,432		$	22,428		$	8,636
-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
				Equity securities			Mortgage
(Dollars in thousands)	Municipal						servicing rights
Balance at January 1, 2013	$	30,770		$	22,169		$	6,750
Total net gains (losses) included in:
Net income (1)	—			—			1,886
Other comprehensive income	(314		)	259			—
Purchases	2,347			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	(371		)	—			—
Net transfers into/(out of) Level 3	—			—			—
Balance at June 30, 2013	$	32,432		$	22,428		$	8,636
-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
Also, the Company may be required, from time to time, to measure certain other financial assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from impairment charges on individual assets. For assets measured at fair value on a nonrecurring basis that were still held in the balance sheet at the end of the period, the following table provides the carrying value of the related individual assets or portfolios at June 30, 2014.
	June 30, 2014												Three Months		Six Months Ended June 30, 2014 Fair Value Losses Recognized, net
													Ended June 30, 2014
(Dollars in thousands)	Total			Level 1			Level 2			Level 3			Fair Value Losses Recognized, net
Impaired loans—collateral based	$	65,046		$	—		$	—		$	65,046		$	6,133	$	13,697
Other real estate owned, including covered other real estate owned (1)	115,584			—			—			115,584			2,761		8,933
Total	$	180,630		$	—		$	—		$	180,630		$	8,894	$	22,630
-1	Fair value losses recognized, net on other real estate owned include valuation adjustments and charge-offs during the respective period.
Impaired loans—A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due pursuant to the contractual terms of the loan agreement. A loan restructured in a troubled debt restructuring is an impaired loan according to applicable accounting guidance. Impairment is measured by estimating the fair value of the loan based on the present value of expected cash flows, the market price of the loan, or the fair value of the underlying collateral. Impaired loans are considered a fair value measurement where an allowance is established based on the fair value of collateral. Appraised values, which may require adjustments to market-based valuation inputs, are generally used on real estate collateral-dependent impaired loans.
The Company’s Managed Assets Division is primarily responsible for the valuation of Level 3 measurements of impaired loans. For more information on the Managed Assets Division review of impaired loans refer to Note 7 – Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans. At June 30, 2014, the Company had $137.2 million of impaired loans classified as Level 3. Of the $137.2 million of impaired loans, $65.0 million were measured at fair value based on the underlying collateral of the loan as shown in the table above. The remaining $72.2 million were valued based on discounted cash flows in accordance with ASC 310.
Other real estate owned (including covered other real estate owned)—Other real estate owned is comprised of real estate acquired in partial or full satisfaction of loans and is included in other assets. Other real estate owned is recorded at its estimated fair value less estimated selling costs at the date of transfer, with any excess of the related loan balance over the fair value less expected selling costs charged to the allowance for loan losses. Subsequent changes in value are reported as adjustments to the carrying amount and are recorded in other non-interest expense. Gains and losses upon sale, if any, are also charged to other non-interest expense. Fair value is generally based on third party appraisals and internal estimates and is therefore considered a Level 3 valuation.
The Company’s Managed Assets Division is primarily responsible for the valuation of Level 3 measurements for non-covered other real estate owned and covered other real estate owned. At June 30, 2014, the Company had $115.6 million of other real estate owned classified as Level 3. The unobservable input applied to other real estate owned relates to the valuation adjustment determined by the Company’s appraisals. The valuation adjustments applied to other real estate owned range from a 55% write-up, to a 40% write-down of the carrying value at June 30, 2014, with a weighted average write-down adjustment of 2.81%. A higher appraisal valuation results in a increased carrying value.
The valuation techniques and significant unobservable inputs used to measure both recurring and non-recurring Level 3 fair value measurements at June 30, 2014 were as follows:
(Dollars in thousands)
	Fair Value			Valuation Methodology		Significant Unobservable Input	Range		Weighted	Impact to valuation
							of Inputs		Average	from an increased or
									of Inputs	higher input value
Measured at fair value on a recurring basis:
Municipal Securities	$	38,053		Bond pricing		Equivalent rating	BBB-AA+		N/A	Increase
Equity Securities	24,152			Discounted cash flows		Discount rate	1.24%-2.10%		1.72%	Decrease
Mortgage Servicing Rights	8,227			Discounted cash flows		Discount rate	9.5%-13%		9.66%	Decrease
						Constant prepayment rate (CPR)	11%-16%		12.68%	Decrease
Measured at fair value on a non-recurring basis:
Impaired loans—collateral based	$	65,046		Appraisal value		N/A	N/A		N/A	N/A
Other real estate owned, including covered other real estate owned	115,584			Appraisal value		Property specific valuation adjustment	(40)% - 55%		-2.81%	Increase
The Company is required under applicable accounting guidance to report the fair value of all financial instruments on the consolidated statements of condition, including those financial instruments carried at cost. The carrying amounts and estimated fair values of the Company’s financial instruments as of the dates shown:
	At June 30, 2014						At December 31, 2013						At June 30, 2013
	Carrying			Fair			Carrying			Fair			Carrying		Fair
(Dollars in thousands)	Value			Value			Value			Value			Value		Value
Financial Assets:
Cash and cash equivalents	$	356,978		$	356,978		$	263,864		$	263,864		$	233,299	$	233,299
Interest bearing deposits with banks	506,871			506,871			495,574			495,574			440,656		440,656
Available-for-sale securities	1,824,240			1,824,240			2,176,290			2,176,290			1,843,824		1,843,824
Trading account securities	2,234			2,234			497			497			659		659
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	84,531			84,531			79,261			79,261			79,354		79,354
Brokerage customer receivables	28,199			28,199			30,953			30,953			26,214		26,214
Mortgage loans held-for-sale, at fair value	363,627			363,627			332,485			332,485			525,027		525,027
Mortgage loans held-for-sale, at lower of cost or market	—			—			1,842			1,857			12,964		13,113
Total loans	14,025,150			14,741,579			13,243,033			13,867,255			12,971,494		13,613,298
Mortgage servicing rights	8,227			8,227			8,946			8,946			8,636		8,636
Nonqualified deferred compensation assets	7,850			7,850			7,222			7,222			6,793		6,793
Derivative assets	50,967			50,967			48,221			48,221			60,554		60,554
FDIC indemnification asset	46,115			46,115			85,672			85,672			137,681		137,681
Accrued interest receivable and other	165,511			165,511			163,732			163,732			163,703		163,703
Total financial assets	$	17,470,500		$	18,186,929		$	16,937,592		$	17,561,829		$	16,510,858	$	17,152,811
Financial Liabilities
Non-maturity deposits	$	11,314,162		$	11,314,162		$	10,442,077		$	10,442,077		$	10,023,533	$	10,023,533
Deposits with stated maturities	4,242,214			4,255,896			4,226,712			4,242,172			4,342,321		4,359,361
Notes payable	—			—			364			364			1,729		1,729
Federal Home Loan Bank advances	580,582			585,792			417,762			422,750			585,942		591,183
Other borrowings	43,716			43,716			254,740			254,740			252,776		252,776
Subordinated notes	140,000			144,899			—			—			10,000		10,000
Junior subordinated debentures	249,493			250,492			249,493			250,672			249,493		250,597
Derivative liabilities	43,650			43,650			37,264			37,264			37,654		37,654
Accrued interest payable	8,399			8,399			8,556			8,556			11,293		11,293
Total financial liabilities	$	16,622,216		$	16,647,006		$	15,636,968		$	15,658,595		$	15,514,741	$	15,538,126
Not all the financial instruments listed in the table above are subject to the disclosure provisions of ASC Topic 820, as certain assets and liabilities result in their carrying value approximating fair value. These include cash and cash equivalents, interest bearing deposits with other banks, brokerage customer receivables, FHLB and FRB stock, FDIC indemnification asset, accrued interest receivable and accrued interest payable, non-maturity deposits, notes payable and other borrowings.
The following methods and assumptions were used by the Company in estimating fair values of financial instruments that were not previously disclosed.
Mortgage loans held-for-sale, at lower of cost or market—Fair value is based on either quoted prices for the same or similar loans, or values obtained from third parties, or is estimated for portfolios of loans with similar financial characteristics and is therefore considered a Level 2 valuation.
Loans. Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are analyzed by type such as commercial, residential real-estate, etc. Each category is further segmented by interest rate type (fixed and variable) and term. For variable-rate loans that reprice frequently, estimated fair values are based on carrying values. The fair value of residential loans is based on secondary market sources for securities backed by similar loans, adjusted for differences in loan characteristics. The fair value for other fixed rate loans is estimated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect credit and interest rate risks inherent in the loan. The primary impact of credit risk on the present value of the loan portfolio, however, was assessed through the use of the allowance for loan losses, which is believed to represent the current fair value of probable incurred losses for purposes of the fair value calculation. In accordance with ASC 820, the Company has categorized loans as a Level 3 fair value measurement.
Deposits with stated maturities. The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently in effect for deposits of similar remaining maturities. In accordance with ASC 820, the Company has categorized deposits with stated maturities as a Level 3 fair value measurement.
Federal Home Loan Bank advances. The fair value of Federal Home Loan Bank advances is obtained from the Federal Home Loan Bank which uses a discounted cash flow analysis based on current market rates of similar maturity debt securities to discount cash flows. In accordance with ASC 820, the Company has categorized Federal Home Loan Bank advances as a Level 3 fair value measurement.
Subordinated notes. The fair value of the subordinated notes is based on a market price obtained from an independent pricing vendor. In accordance with ASC 820, the Company has categorized subordinated notes as a Level 2 fair value measurement.
Junior subordinated debentures. The fair value of the junior subordinated debentures is based on the discounted value of contractual cash flows. In accordance with ASC 820, the Company has categorized junior subordinated debentures as a Level 3 fair value measurement.

StockBased_Compensation_Plans

Stock-Based Compensation Plans	6 Months Ended
	Jun. 30, 2014
Share-based Compensation [Abstract]	'
Stock-Based Compensation Plans	'
	Stock-Based Compensation Plans
	The 2007 Stock Incentive Plan (“the 2007 Plan”), which was approved by the Company's shareholders in January 2007, permits the grant of incentive stock options, nonqualified stock options, rights and restricted stock, as well as the conversion of outstanding options of acquired companies to Wintrust options. The 2007 Plan replaced the Wintrust Financial Corporation 1997 Stock Incentive Plan (“the 1997 Plan”) which had substantially similar terms. The 2007 Plan and the 1997 Plan are collectively referred to as “the Plans.” The Plans cover substantially all employees of Wintrust. The Compensation Committee of the Board of Directors administers all stock-based compensation programs and authorizes all awards granted pursuant to the Plans. The 2007 Plan initially provided for the issuance of up to 500,000 shares of common stock. In May 2009 and May 2011, the Company's shareholders approved an additional 325,000 shares and 2,860,000 shares, respectively, of common stock that may be offered under the 2007 Plan. All grants made after 2006 have been made pursuant to the 2007 Plan, and as of June 30, 2014, assuming all performance-based shares will be issued at the maximum levels, 389,125 shares were available for future grants.
	The Company historically awarded stock-based compensation in the form of nonqualified stock options and time-vested restricted share awards (“restricted shares”). In general, the grants of options provide for the purchase shares of Wintrust's common stock at the fair market value of the stock on the date the options are granted. Options under the 2007 Plan generally vest ratably over periods of three to five years and have a maximum term of seven years from the date of grant. Stock options granted under the 1997 Plan provided for a maximum term of 10 years. Restricted shares entitle the holders to receive, at no cost, shares of the Company’s common stock. Restricted shares generally vest over periods of one to five years from the date of grant.
	Beginning in 2011, the Company has awarded annual grants under The Long-Term Incentive Program (“LTIP”), which is administered under the 2007 Plan. The LTIP is designed in part to align the interests of management with the interests of shareholders, foster retention, create a long-term focus based on sustainable results and provide participants a target long-term incentive opportunity. It is anticipated that LTIP awards will continue to be granted annually. LTIP grants to date have consisted of time vested nonqualified stock options and performance-based stock and cash awards. Stock options granted under the LTIP have a term of seven years and will generally vest equally over three years based on continued service. Performance-based stock and cash awards granted under the LTIP are contingent upon the achievement of pre-established long-term performance goals set in advance by the Compensation Committee over a three-year period with overlapping performance periods starting at the beginning of each calendar year. These performance awards are granted at a target level, and based on the Company’s achievement of the pre-established long-term goals, the actual payouts can range from 0% to 200% of the target award. The awards vest in the quarter after the end of the performance period upon certification of the payout by the Compensation Committee of the Board of Directors. Holders of performance-based stock awards are entitled to shares of common stock at no cost.
	Holders of restricted share awards and performance-based stock awards received under the Plans are not entitled to vote or receive cash dividends (or cash payments equal to the cash dividends) on the underlying common shares until the awards are vested. Except in limited circumstances, these awards are canceled upon termination of employment without any payment of consideration by the Company.
	Stock-based compensation is measured as the fair value of an award on the date of grant, and the measured cost is recognized over the period which the recipient is required to provide service in exchange for the award. The fair values of restricted share and performance-based stock awards are determined based on the average of the high and low trading prices on the grant date, and the fair value of stock options is estimated using a Black-Scholes option-pricing model that utilizes the assumptions outlined in the following table. Option-pricing models require the input of highly subjective assumptions and are sensitive to changes in the option's expected life and the price volatility of the underlying stock, which can materially affect the fair value estimate. Expected life has been based on historical exercise and termination behavior as well as the term of the option, but the expected life of the options granted pursuant to the LTIP awards has been based on the safe harbor rule of the SEC Staff Accounting Bulletin No. 107 “Share-Based Payment” as the Company believes historical exercise data may not provide a reasonable basis to estimate the expected term of these options. Expected stock price volatility is based on historical volatility of the Company's common stock, which correlates with the expected life of the options, and the risk-free interest rate is based on comparable U.S. Treasury rates. Management reviews and adjusts the assumptions used to calculate the fair value of an option on a periodic basis to better reflect expected trends.
	The following table presents the weighted average assumptions used to determine the fair value of options granted in the six month periods ending June 30, 2014 and 2013.
		Six Months Ended		Six Months Ended
		June 30,		June 30,
		2014		2013
	Expected dividend yield	0.4	%	0.5	%
	Expected volatility	30.8	%	59.6	%
	Risk-free rate	0.7	%	0.7	%
	Expected option life (in years)	4.5		4.5
	Stock based compensation is recognized based upon the number of awards that are ultimately expected to vest. Forfeitures are estimated based on historical forfeiture experience. In addition, for performance-based awards, an estimate is made of the number of shares expected to vest as a result of projected performance against the performance criteria in the award to determine the amount of compensation expense to recognize. The estimate is reevaluated periodically and total compensation expense is adjusted for any change in estimate in the current period. Stock-based compensation expense recognized in the Consolidated Statements of Income was $2.1 million in the second quarter of 2014 and $2.2 million in the second quarter of 2013, respectively, and $5.9 million and $4.5 million for the 2014 and 2013 year-to-date periods, respectively. The first quarter of 2014 includes a $2.1 million charge for a modification to the performance measurement criteria related to the 2011 LTIP performance-based stock grants that were vested and paid out in the first quarter of 2014. The cost of the modification was determined based on the stock price on the date of re-measurement and paid to the holders of the performance-based stock awards in cash. Similarly, in the first quarter of 2014, a modification was made to the performance measurement criteria related to the performance-based cash awards granted under the LTIP in 2011. These awards vested and were paid out in the first quarter of 2014 and the Company recognized an additional charge of $3.0 million related to the modification.
	A summary of the Plans' stock option activity for the six months ended June 30, 2014 and June 30, 2013 is presented below:
	Stock Options	Common			Weighted		Remaining		Intrinsic
		Shares			Average		Contractual		Value (2)
					Strike Price		Term (1)		$0
	Outstanding at January 1, 2014	1,524,672			$	42
	Granted	364,767			46.85
	Exercised	(88,141	)		34.66
	Forfeited or canceled	(43,617	)		45.56
	Outstanding at June 30, 2014	1,757,681			$	43.29	3.5		$	9,833
	Exercisable at June 30, 2014	1,143,629			$	43.98	2.2		$	7,066
	Stock Options	Common			Weighted		Remaining		Intrinsic
		Shares			Average		Contractual		Value (2)
					Strike Price		Term (1)		$0
	Outstanding at January 1, 2013	1,745,427			$	42.31
	Granted	223,995			37.81
	Exercised	(44,658	)		28.27
	Forfeited or canceled	(16,765	)		38.64
	Outstanding at June 30, 2013	1,907,999			$	42.15	3.1		$	4,634
	Exercisable at June 30, 2013	1,399,796			$	45.04	2.1		$	2,552
	-1	Represents the remaining weighted average contractual life in years.
	-2	Aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company's stock price on the last trading day of the quarter and the option exercise price, multiplied by the number of shares) that would have been received by the option holders if they had exercised their options on the last day of the quarter. Options with exercise prices above the stock price on the last trading day of the quarter are excluded from the calculation of intrinsic value. The intrinsic value will change based on the fair market value of the Company's stock.
	The weighted average grant date fair value per share of options granted during the six months ended June 30, 2014 and June 30, 2013 was $11.96 and $17.55, respectively. The aggregate intrinsic value of options exercised during the six months ended June 30, 2014 and 2013, was $1.0 million and $375,000, respectively.
	A summary of the Plans' restricted share activity for the six months ended June 30, 2014 and June 30, 2013 is presented below:
		Six months ended June 30, 2014					Six months ended June 30, 2013
	Restricted Shares	Common			Weighted		Common			Weighted
		Shares			Average		Shares			Average
					Grant-Date					Grant-Date
					Fair Value					Fair Value
	Outstanding at January 1	181,522			$	43.39	314,226			$	37.99
	Granted	11,430			46.1		686			35.92
	Vested and issued	(32,328	)		34.57		(121,472	)		32.06
	Forfeited	(5,387	)		36.89		(872	)		32.42
	Outstanding at June 30	155,237			$	45.65	192,568			$	41.74
	Vested, but not issuable at June 30	85,000			$	51.88	85,000			$	51.88
	A summary of the 2007 Plan's performance-based stock award activity, based on the target level of the awards, for the six months ended June 30, 2014 and June 30, 2013 is presented below:
		Six months ended June 30, 2014					Six months ended June 30, 2013
	Performance-based Stock	Common			Weighted		Common			Weighted
		Shares			Average		Shares			Average
					Grant-Date					Grant-Date
					Fair Value					Fair Value
	Outstanding at January 1	307,512			$	34.01	214,565			$	32.08
	Granted	93,123			46.85		103,987			37.81
	Vested and issued	(15,944	)		33.28		—			—
	Forfeited	(87,046	)		33.64		(6,441	)		33.64
	Outstanding at June 30	297,645			$	38.18	312,111			$	33.96
	Based on the achievement of the pre-established performance goals over a three-year period, the actual performance-based award payouts can be adjusted downward to 0% or upward to a maximum of 200% of the target award. The awards vest in the quarter after the end of the performance period. In the first quarter of 2014, the 2011 grants vested and were paid. As previously discussed, the Compensation Committee of the Board of Directors of the Company modified the 2011 awards such that 17% of the awards were paid in shares and the remainder in cash. As a result, an aggregate of 77,288 shares previously reserved for potential issuance in connection with the 2011 awards were not issued and remain available for future use under the Plan.
	The Company issues new shares to satisfy its obligation to issue shares granted pursuant to the Plans.

Shareholders_Equity_and_Earnin

Shareholders' Equity and Earnings Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]	'
Shareholders' Equity and Earnings Per Share	'
	Shareholders’ Equity and Earnings Per Share
	Tangible Equity Units
	In December 2010, the Company sold 4.6 million 7.50% TEUs at a public offering price of $50.00 per unit. The Company received net proceeds of $222.7 million after deducting underwriting discounts and commissions and estimated offering expenses. Each tangible equity unit was composed of a prepaid common stock purchase contract and a junior subordinated amortizing note due December 15, 2013. The prepaid stock purchase contracts were recorded as surplus (a component of shareholders’ equity), net of issuance costs, and the junior subordinated amortizing notes were recorded as debt within other borrowings. Issuance costs associated with the debt component were recorded as a discount within other borrowings and were amortized over the term of the instrument to December 15, 2013 at which time they were paid in full. The Company allocated the proceeds from the issuance of the TEU to equity and debt based on the relative fair values of the respective components of each unit.
	The aggregate fair values assigned to each component of the TEU offering at the issuance date were as follows:
	(Dollars in thousands, except per unit amounts)	Equity				Debt				TEU Total
		Component				Component
	Units issued (1)	4,600				4,600				4,600
	Unit price	$	40.271818			$	9.728182			$	50
	Gross proceeds	185,250				44,750				230,000
	Issuance costs, including discount	5,934				1,419				7,353
	Net proceeds	$	179,316			$	43,331			$	222,647
	Balance sheet impact
	Other borrowings	—				43,331				43,331
	Surplus	179,316				—				179,316
	-1	TEUs consisted of two components: one unit of the equity component and one unit of the debt component.
	The fair value of the debt component was determined using a discounted cash flow model using the following assumptions: (1) quarterly cash payments of 7.5%; (2) a maturity date of December 15, 2013; and (3) an assumed discount rate of 9.5%. The discount rate used for estimating the fair value was determined by obtaining yields for comparably-rated issuers trading in the market. The debt component was recorded at fair value, and the discount was amortized using the level yield method over the term of the instrument to the settlement date of December 15, 2013.
	The fair value of the equity component was determined using Black-Scholes valuation models applied to the range of stock prices contemplated by the terms of the TEU and used the following assumptions: (1) risk-free interest rate of 0.95%; (2) expected stock price volatility in the range of 35%-45%; (3) dividend yield plus stock borrow cost of 0.85%; and (4) term of 3.02 years.
	Each junior subordinated amortizing note, which had an initial principal amount of $9.728182, had a stated interest rate of 9.50% per annum, and had a scheduled final installment payment date of December 15, 2013. On each March 15, June 15, September 15 and December 15, the Company paid equal quarterly installments of $0.9375 on each amortizing note. The quarterly installment payable at March 15, 2011, however, was $0.989583. Each payment constituted a payment of interest and a partial repayment of principal. The issuance costs were amortized to interest expense using the effective-interest method.
	Each prepaid common stock purchase contract automatically settled on December 15, 2013 and the Company delivered 1.3333 shares of its common stock based on the applicable market value (the average of the volume weighted average price of Company common stock for the twenty (20) consecutive trading days ending on the third trading day immediately preceding December 15, 2013). Upon settlement, an amount equal to $1.00 per common share issued was reclassified from surplus to common stock.
	Series A Preferred Stock
	In August 2008, the Company issued and sold 50,000 shares of non-cumulative perpetual convertible preferred stock, Series A, liquidation preference $1,000 per share (the “Series A Preferred Stock”) for $50 million in a private transaction. Dividends on the Series A Preferred Stock were paid quarterly in arrears at a rate of 8.00% per annum. The Series A Preferred Stock was convertible into common stock at the option of the holder at a conversion rate of 38.88 shares of common stock per share of Series A Preferred Stock. On July 19, 2013, pursuant to such terms, the holder of the Series A Preferred Stock elected to convert all 50,000 shares of the Series A Preferred Stock into 1,944,000 shares of the Company's common stock, no par value.
	Series C Preferred Stock
	In March 2012, the Company issued and sold 126,500 shares of non-cumulative perpetual convertible preferred stock, Series C, liquidation preference $1,000 per share (the “Series C Preferred Stock”) for $126.5 million in an equity offering. If declared, dividends on the Series C Preferred Stock are payable quarterly in arrears at a rate of 5.00% per annum. The Series C Preferred Stock is convertible into common stock at the option of the holder at a conversion rate of 24.3132 shares of common stock per share of Series C Preferred Stock. In the first quarter of 2014, 10 shares of the Series C Preferred Stock were converted at the option of the respective holders into 244 shares of the Company's common stock. In the fourth quarter of 2013, 23 shares of the Series C Preferred Stock were converted at the option of the respective holders into 558 shares of the Company's common stock. On and after April 15, 2017, the Company will have the right under certain circumstances to cause the Series C Preferred Stock to be converted into common stock if the closing price of the Company’s common stock exceeds a certain amount.
	Common Stock Warrant
	Pursuant to the U.S. Department of the Treasury’s (the “U.S. Treasury”) Capital Purchase Program, on December 19, 2008, the Company issued to the U.S. Treasury a warrant to exercise 1,643,295 warrant shares of Wintrust common stock at a per share exercise price of $22.82 and with a term of 10 years. In February 2011, the U.S. Treasury sold all of its interest in the warrant issued to it in a secondary underwritten public offering. During the second quarter of 2014, certain holders of the interest in the warrant exercised 499,929 warrant shares at the exercise price, which resulted in 259,071 of common stock issued. At June 30, 2014, all remaining holders of the interest in the warrant are able to exercise 1,143,366 warrant shares at the stated exercise price.
	The Company previously issued other warrants to acquire common stock. These warrants entitled the holders to purchase one share of the Company’s common stock at a purchase price of $30.50 per share. Of the 19,000 warrants previously outstanding, 18,000 were exercised in March 2012 and 1,000 were exercised in February 2013. As a result, none of these warrants were outstanding at June 30, 2014.
	Other
	In May 2013, the Company issued 648,286 shares of its common stock in the acquisition of FLB.
	At the April 2014 Board of Directors meeting, a quarterly cash dividend of $0.10 per share ($0.40 on an annualized basis) was declared. It was paid on May 22, 2014 to shareholders of record as of May 8, 2014. At the January 2014 Board of Directors meeting, a quarterly cash dividend of $0.10 per share ($0.40 on an annualized basis) was declared. It was paid on February 20, 2014 to shareholders of record as of February 6, 2014.
	Accumulated Other Comprehensive Income (Loss)
	The following tables summarize the components of other comprehensive income (loss), including the related income tax effects, and the related amount reclassified to net income for the periods presented (in thousands).
		Accumulated				Accumulated				Accumulated				Total
		Unrealized (Losses) Gains on Securities				Unrealized				Foreign				Accumulated
						Losses on				Currency				Other
						Derivative				Translation				Comprehensive
						Instruments				Adjustments				Income (Loss)
	Balance at April 1, 2014	$	(39,923	)		$	(2,521	)		$	(14,309	)		$	(56,753	)
	Other comprehensive income (loss) during the period, net of tax, before reclassifications	15,717				(691		)		6,707				21,733
	Amount reclassified from accumulated other comprehensive income, net of tax	203				314				—				517
	Net other comprehensive income (loss) during the period, net of tax	$	15,920			$	(377	)		$	6,707			$	22,250
	Balance at June 30, 2014	$	(24,003	)		$	(2,898	)		$	(7,602	)		$	(34,503	)
	Balance at January 1, 2014	$	(53,665	)		$	(2,462	)		$	(6,909	)		$	(63,036	)
	Other comprehensive income (loss) during the period, net of tax, before reclassifications	29,439				(1,047		)		(693		)		27,699
	Amount reclassified from accumulated other comprehensive income, net of tax	223				611				—				834
	Net other comprehensive income (loss)during the period, net of tax	$	29,662			$	(436	)		$	(693	)		$	28,533
	Balance at June 30, 2014	$	(24,003	)		$	(2,898	)		$	(7,602	)		$	(34,503	)
	Balance at April 1, 2013	$	1,910			$	(4,404	)		$	1,427			$	(1,067	)
	Other comprehensive (loss) income during the period, net of tax, before reclassifications	(43,122		)		351				(6,318		)		(49,089		)
	Amount reclassified from accumulated other comprehensive income, net of tax	(1		)		953				—				952
	Net other comprehensive (loss) income during the period, net of tax	$	(43,123	)		$	1,304			$	(6,318	)		$	(48,137	)
	Balance at June 30, 2013	$	(41,213	)		$	(3,100	)		$	(4,891	)		$	(49,204	)
	Balance at January 1, 2013	$	6,710			$	(5,292	)		$	6,293			$	7,711
	Other comprehensive (loss) income during the period, net of tax, before reclassifications	(47,771		)		312				(11,184		)		(58,643		)
	Amount reclassified from accumulated other comprehensive income, net of tax	(152		)		1,880				—				1,728
	Net other comprehensive (loss) income during the period, net of tax	$	(47,923	)		$	2,192			$	(11,184	)		$	(56,915	)
	Balance at June 30, 2013	$	(41,213	)		$	(3,100	)		$	(4,891	)		$	(49,204	)
		Amount Reclassified from Accumulated Other Comprehensive Income for the
	Details Regarding the Component of	Three months ended								Six months ended							Impacted Line on the Consolidated Statements of Income
	Accumulated Other Comprehensive Income	30-Jun-14				30-Jun-13				30-Jun-14				30-Jun-13
	Accumulated unrealized losses on securities
	Gains included in net income	$	(336	)		$	2			$	(369	)		$	253		(Losses) gains on available-for-sale securities, net
		(336		)		2				(369		)		253			Income before taxes
	Tax effect	$	133			$	(1	)		$	146			$	(101	)	Income tax expense
Net of tax	$	(203	)		$	1			$	(223	)		$	152		Net income
Accumulated unrealized losses on derivative instruments
Amount reclassified to interest expense on junior subordinated debentures	$	521			$	1,583			$	1,014			$	3,122		Interest on junior subordinated debentures
	(521		)		(1,583		)		(1,014		)		(3,122		)	Income before taxes
Tax effect	$	207			$	630			$	403			$	1,242		Income tax expense
Net of tax	$	(314	)		$	(953	)		$	(611	)		$	(1,880	)	Net income
Earnings per Share
The following table shows the computation of basic and diluted earnings per share for the periods indicated:
			Three Months Ended								Six months ended
(In thousands, except per share data)			30-Jun-14				30-Jun-13				30-Jun-14				June 30,
															2013
Net income			$	38,541			$	34,307			$	73,041			$	66,359
Less: Preferred stock dividends and discount accretion			1,581				2,617				3,162				5,233
Net income applicable to common shares—Basic	(A)		36,960				31,690				69,879				61,126
Add: Dividends on convertible preferred stock, if dilutive			1,581				2,581				3,162				5,162
Net income applicable to common shares—Diluted	(B)		38,541				34,271				73,041				66,288
Weighted average common shares outstanding	(C)		46,520				37,486				46,358				37,231
Effect of dilutive potential common shares
Common stock equivalents			1,327				7,334				1,381				7,343
Convertible preferred stock, if dilutive			3,075				5,020				3,075				5,020
Total dilutive potential common shares			4,402				12,354				4,456				12,363
Weighted average common shares and effect of dilutive potential common shares	(D)		50,922				49,840				50,814				49,594
Net income per common share:
Basic	(A/C)		$	0.79			$	0.85			$	1.51			$	1.64
Diluted	(B/D)		$	0.76			$	0.69			$	1.44			$	1.34
Potentially dilutive common shares can result from stock options, restricted stock unit awards, stock warrants, the Company’s convertible preferred stock, tangible equity unit shares and shares to be issued under the Employee Stock Purchase Plan and the Directors Deferred Fee and Stock Plan, being treated as if they had been either exercised or issued, computed by application of the treasury stock method. While potentially dilutive common shares are typically included in the computation of diluted earnings per share, potentially dilutive common shares are excluded from this computation in periods in which the effect would reduce the loss per share or increase the income per share. For diluted earnings per share, net income applicable to common shares can be affected by the conversion of the Company’s convertible preferred stock. Where the effect of this conversion would reduce the loss per share or increase the income per share, net income applicable to common shares is not adjusted by the associated preferred dividends.

Subsequent_Events

Subsequent Events	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	On July 11, 2014, the Company, through its wholly-owned subsidiary Town Bank, completed its acquisition of the Pewaukee, Wisconsin branch of THE National Bank. In addition to the banking facility, Town Bank acquired approximately $81 million in loans and approximately $36 million in deposits, prior to purchase accounting adjustments.
	On August 8, 2014, the Company, through its wholly-owned subsidiary Town Bank, completed its acquisition of 11 branches of Talmer Bank & Trust. In addition to the banking locations, Town Bank acquired approximately $360 million in deposits, prior to purchase accounting adjustments.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Business Combinations	'
	Loans comprise the majority of the assets acquired in nearly all of these FDIC-assisted transactions since 2010, most of which are subject to loss sharing agreements with the FDIC whereby the FDIC has agreed to reimburse the Company for 80% of losses incurred on the purchased loans, other real estate owned (“OREO”), and certain other assets. Additionally, the loss share agreements with the FDIC require the Company to reimburse the FDIC in the event that actual losses on covered assets are lower than the original loss estimates agreed upon with the FDIC with respect of such assets in the loss share agreements. The Company refers to the loans subject to these loss-sharing agreements as “covered loans” and uses the term “covered assets” to refer to covered loans, covered OREO and certain other covered assets. The agreements with the FDIC require that the Company follow certain servicing procedures or risk losing the FDIC reimbursement of covered asset losses.
	The loans covered by the loss sharing agreements are classified and presented as covered loans and the estimated reimbursable losses are recorded as an FDIC indemnification asset in the Consolidated Statements of Condition. The Company recorded the acquired assets and liabilities at their estimated fair values at the acquisition date. The fair value for loans reflected expected credit losses at the acquisition date. Therefore, the Company will only recognize a provision for credit losses and charge-offs on the acquired loans for any further credit deterioration subsequent to the acquisition date. See Note 7 — Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans for further discussion of the allowance on covered loans.
	The loss share agreements with the FDIC cover realized losses on loans, foreclosed real estate and certain other assets. These loss share assets are measured separately from the loan portfolios because they are not contractually embedded in the loans and are not transferable with the loans should the Company choose to dispose of them. Fair values at the acquisition dates were estimated based on projected cash flows available for loss-share based on the credit adjustments estimated for each loan pool and the loss share percentages. The loss share assets are also separately measured from the related loans and foreclosed real estate and recorded as FDIC indemnification assets on the Consolidated Statements of Condition. Subsequent to the acquisition date, reimbursements received from the FDIC for actual incurred losses will reduce the FDIC indemnification assets. Reductions to expected losses, to the extent such reductions to expected losses are the result of an improvement to the actual or expected cash flows from the covered assets, will also reduce the FDIC indemnification assets. Although these assets are contractual receivables from the FDIC, there are no contractual interest rates. Additions to expected losses will require an increase to the allowance for loan losses and a corresponding increase to the FDIC indemnification assets. The corresponding accretion is recorded as a component of non-interest income on the Consolidated Statements of Income.
Acquired Loans with Evidence of Credit Quality Deterioration	'
	Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date. Expected future cash flows at the purchase date in excess of the fair value of loans are recorded as interest income over the life of the loans if the timing and amount of the future cash flows is reasonably estimable (“accretable yield”). The difference between contractually required payments and the cash flows expected to be collected at acquisition is referred to as the non-accretable difference and represents probable losses in the portfolio.
	In determining the acquisition date fair value of purchased impaired loans, and in subsequent accounting, the Company aggregates these purchased loans into pools of loans by common risk characteristics, such as credit risk rating and loan type. Subsequent to the purchase date, increases in cash flows over those expected at the purchase date are recognized as interest income prospectively. Subsequent decreases to the expected cash flows will generally result in a provision for loan losses.
	The Company purchased a portfolio of life insurance premium finance receivables in 2009. These purchased life insurance premium finance receivables are valued on an individual basis with the accretable component being recognized into interest income using the effective yield method over the estimated remaining life of the loans. The non-accretable portion is evaluated each quarter and if the loans’ credit related conditions improve, a portion is transferred to the accretable component and accreted over future periods. In the event a specific loan prepays in whole, any remaining accretable and non-accretable discount is recognized in income immediately. If credit related conditions deteriorate, an allowance related to these loans will be established as part of the provision for credit losses.
	See Note 6—Loans, for more information on loans acquired with evidence of credit quality deterioration since origination.
Cash and Cash Equivalents	'
	For purposes of the Consolidated Statements of Cash Flows, the Company considers cash and cash equivalents to include cash on hand, cash items in the process of collection, non-interest bearing amounts due from correspondent banks, federal funds sold and securities purchased under resale agreements with original maturities of three months or less.
Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block]	'
	The Company conducts a regular assessment of its investment securities to determine whether securities are other-than-temporarily impaired considering, among other factors, the nature of the securities, credit ratings or financial condition of the issuer, the extent and duration of the unrealized loss, expected cash flows, market conditions and the Company’s ability to hold the securities through the anticipated recovery period.
Loans	'
	Certain premium finance receivables are recorded net of unearned income. The unearned income portions of such premium finance receivables were $44.8 million at June 30, 2014, $41.9 million at December 31, 2013 and $41.5 million at June 30, 2013, respectively. Certain life insurance premium finance receivables attributable to the life insurance premium finance loan acquisition in 2009 as well as purchased credit impaired ("PCI") loans acquired with evidence of credit quality deterioration since origination are recorded net of credit discounts.
Receivables, Policy [Policy Text Block]	'
	These amounts include accretion from both covered and non-covered loans, and are included together within interest and fees on loans in the Consolidated Statements of Income.
Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Allowance Policy [Policy Text Block]	'
	As a result of this initial review by the Company’s Managed Asset Division, the credit risk rating is reviewed and a portion of the outstanding loan balance may be deemed uncollectible or an impairment reserve may be established. The Company’s impairment analysis utilizes an independent re-appraisal of the collateral (unless such a third-party evaluation is not possible due to the unique nature of the collateral, such as a closely-held business or thinly traded securities). In the case of commercial real-estate collateral, an independent third party appraisal is ordered by the Company’s Real Estate Services Group to determine if there has been any change in the underlying collateral value. These independent appraisals are reviewed by the Real Estate Services Group and sometimes by independent third party valuation experts and may be adjusted depending upon market conditions.
	Through the credit risk rating process, loans are reviewed to determine if they are performing in accordance with the original contractual terms. If the borrower has failed to comply with the original contractual terms, further action may be required by the Company, including a downgrade in the credit risk rating, movement to non-accrual status, a charge-off or the establishment of a specific impairment reserve. If we determine that a loan amount, or portion thereof, is uncollectible, the loan’s credit risk rating is immediately downgraded to an 8 or 9 and the uncollectible amount is charged-off. Any loan that has a partial charge-off continues to be assigned a credit risk rating of an 8 or 9 for the duration of time that a balance remains outstanding. The Company undertakes a thorough and ongoing analysis to determine if additional impairment and/or charge-offs are appropriate and to begin a workout plan for the credit to minimize actual losses.
	If, based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a specific impairment reserve is established. In determining the appropriate charge-off for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral.
Loans and Leases Receivable, Nonperforming Loan and Lease, Policy [Policy Text Block]	'
	establishment of a specific impairment reserve. If we determine that a loan amount, or portion thereof, is uncollectible, the loan’s credit risk rating is immediately downgraded to an 8 or 9 and the uncollectible amount is charged-off. Any loan that has a partial charge-off continues to be assigned a credit risk rating of an 8 or 9 for the duration of time that a balance remains outstanding. The Company undertakes a thorough and ongoing analysis to determine if additional impairment and/or charge-offs are appropriate and to begin a workout plan for the credit to minimize actual losses.
	If, based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a specific impairment reserve is established. In determining the appropriate charge-off for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral.
	Non-performing loans include all non-accrual loans (8 and 9 risk ratings) as well as loans 90 days past due and still accruing interest, excluding PCI loans. The remainder of the portfolio is considered performing under the contractual terms of the loan agreement.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	'
	In conjunction with FDIC-assisted transactions, the Company entered into loss share agreements with the FDIC. Additional expected losses, to the extent such expected losses result in the recognition of an allowance for loan losses, will increase the FDIC indemnification asset. The allowance for loan losses for loans acquired in FDIC-assisted transactions is determined without giving consideration to the amounts recoverable through loss share agreements (since the loss share agreements are separately accounted for and thus presented “gross” on the balance sheet). On the Consolidated Statements of Income, the provision for credit losses related to covered loans is reported net of changes in the amount recoverable under the loss share agreements. Reductions to expected losses, to the extent such reductions to expected losses are the result of an improvement to the actual or expected cash flows from the covered assets, will reduce the FDIC indemnification asset. Additions to expected losses will require an increase to the allowance for loan losses, and a corresponding increase to the FDIC indemnification asset.
Impaired Financing Receivable, Policy [Policy Text Block]	'
	These impaired loans require an allowance for loan losses because the estimated fair value of the loans or related collateral is less than the recorded investment in the loans.
	Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.
Allowance for Loan Losses, Troubled Debt Restructurings	'
	The Company’s approach to restructuring loans, excluding PCI loans, is built on its credit risk rating system which requires credit management personnel to assign a credit risk rating to each loan. In each case, the loan officer is responsible for recommending a credit risk rating for each loan and ensuring the credit risk ratings are appropriate. These credit risk ratings are then reviewed and approved by the bank’s chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors including a borrower’s financial strength, cash flow coverage, collateral protection and guarantees. The Company’s credit risk rating scale is one through ten with higher scores indicating higher risk. In the case of loans rated six or worse following modification, the Company’s Managed Assets Division evaluates the loan and the credit risk rating and determines that the loan has been restructured to be reasonably assured of repayment and of performance according to the modified terms and is supported by a current, well-documented credit assessment of the borrower’s financial condition and prospects for repayment under the revised terms.
	A modification of a loan, excluding PCI loans, with an existing credit risk rating of six or worse or a modification of any other credit which will result in a restructured credit risk rating of six or worse, must be reviewed for possible TDR classification. In that event, our Managed Assets Division conducts an overall credit and collateral review. A modification of these loans is considered to be a TDR if both (1) the borrower is experiencing financial difficulty and (2) for economic or legal reasons, the bank grants a concession to a borrower that it would not otherwise consider. The modification of a loan, excluding PCI loans, where the credit risk rating is five or better both before and after such modification is not considered to be a TDR. Based on the Company’s credit risk rating system, it considers that borrowers whose credit risk rating is five or better are not experiencing financial difficulties and therefore, are not considered TDRs.
	All credits determined to be a TDR will continue to be classified as a TDR in all subsequent periods, unless the borrower has been in compliance with the loan’s modified terms for a period of six months (including over a calendar year-end) and the modified interest rate represented a market rate at the time of a restructuring. The Managed Assets Division, in consultation with the respective loan officer, determines whether the modified interest rate represented a current market rate at the time of restructuring. Using knowledge of current market conditions and rates, competitive pricing on recent loan originations, and an assessment of various characteristics of the modified loan (including collateral position and payment history), an appropriate market rate for a new borrower with similar risk is determined. If the modified interest rate meets or exceeds this market rate for a new borrower with similar risk, the modified interest rate represents a market rate at the time of restructuring. Additionally, before removing a loan from TDR classification, a review of the current or previously measured impairment on the loan and any concerns related to future performance by the borrower is conducted. If concerns exist about the future ability of the borrower to meet its obligations under the loans based on a credit review by the Managed Assets Division, the TDR classification is not removed from the loan. Loans classified as TDRs that are re-modified subsequent to the initial determination will continue to be classified as TDRs following the re-modification, unless the requirements for removal from TDR classification discussed above are satisfied at the time of the re-modification.
	TDRs are reviewed at the time of the modification and on a quarterly basis to determine if a specific reserve is necessary. The carrying amount of the loan is compared to the expected payments to be received, discounted at the loan's original rate, or for collateral dependent loans, to the fair value of the collateral. Any shortfall is recorded as a specific reserve. The Company, in accordance with ASC 310-10, continues to individually measure impairment of these loans after the TDR classification is removed.
	Each TDR was reviewed for impairment at June 30, 2014 and approximately $4.9 million of impairment was present and appropriately reserved for through the Company’s normal reserving methodology in the Company’s allowance for loan losses. For TDRs in which impairment is calculated by the present value of future cash flows, the Company records interest income representing the decrease in impairment resulting from the passage of time during the respective period, which differs from interest income from contractually required interest on these specific loans.  During the three months ended June 30, 2014 and 2013, the Company recorded $103,000 and $296,000, respectively, in interest income representing this decrease in impairment. For the six months ended June 30, 2014 and 2013, the Company recorded $235,000 and $522,000, respectively, in interest income.
Goodwill Impairment Testing	'
	At June 30, 2014, the Company utilized a quantitative approach for its annual goodwill impairment test of the community banking segment and determined that it is not more likely than not that an impairment existed at that time. The annual goodwill impairment tests of the specialty finance and wealth management segments will be conducted at December 31, 2014.
Intangibles Amortizations	'
	The core deposit intangibles recognized in connection with prior bank acquisitions are amortized over a ten-year period on an accelerated basis. The customer list intangibles recognized in connection with the purchase of life insurance premium finance assets in 2009 are being amortized over an 18-year period on an accelerated basis while the customer list intangibles recognized in connection with prior acquisitions within the wealth management segment are being amortized over a ten-year period on a straight-line basis.
Notes Payable, Federal Home Loan Bank Advances, Other Borrowings, Secured Borrowings and Subordinated Notes	'
	At issuance, the junior subordinated notes were recorded at their initial principal balance of $44.7 million, net of issuance costs. These notes had a stated interest rate of 9.5% and required quarterly principal and interest payments of $4.3 million, with an initial payment of $4.6 million that was paid on March 15, 2011. The issuance costs were amortized to interest expense using the effective-interest method.
	FHLB advances are stated at par value of the debt adjusted for unamortized fair value adjustments recorded in connection with advances acquired through acquisitions.
Offsetting Assets and Liabilities	'
	The Company records securities sold under repurchase agreements at their gross value and does not offset positions on the Consolidated Statements of Condition.
Repurchase Agreements, Collateral	'
	Securities pledged for customer balances in sweep accounts and short-term borrowings from brokers are maintained under the Company’s control and consist of U.S. Government agency, mortgage-backed and corporate securities. These securities are included in the available-for-sale securities portfolio as reflected on the Company’s Consolidated Statements of Condition.
Junior Subordinated Debentures	'
	The Trusts are reported in the Company’s consolidated financial statements as unconsolidated subsidiaries. Accordingly, in the Consolidated Statements of Condition, the junior subordinated debentures issued by the Company to the Trusts are reported as liabilities and the common securities of the Trusts, all of which are owned by the Company, are included in available-for-sale securities.
Segment Reporting, Policy [Policy Text Block]	'
	The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management.
	The three reportable segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. In addition, each segment’s customer base has varying characteristics and each segment has a different regulatory environment. While the Company’s management monitors each of the fifteen bank subsidiaries’ operations and profitability separately, these subsidiaries have been aggregated into one reportable operating segment due to the similarities in products and services, customer base, operations, profitability measures, and economic characteristics.
	As of December 31, 2013, management made changes in its approach to measure segment profitability. For purposes of internal segment profitability, management allocates certain intersegment and parent company balances. Management allocates a portion of revenues to the specialty finance segment related to loans originated by the specialty finance segment and sold to the community banking segment. Similarly, for purposes of analyzing the contribution from the wealth management segment, management allocates a portion of the net interest income earned by the community banking segment on deposit balances of customers of the wealth management segment to the wealth management segment. See Note 9 — Deposits, for more information on these deposits. Finally, expenses incurred at the Wintrust parent company are allocated to each segment based on each segment's risk-weighted assets.
	The segment financial information provided in the following tables has been derived from the internal profitability reporting system used by management to monitor and manage the financial performance of the Company. The accounting policies of the segments are substantially similar to as those described in “Summary of Significant Accounting Policies” in Note 1 of the Company’s 2013 Form 10-K. The Company evaluates segment performance based on after-tax profit or loss and other appropriate profitability measures common to each segment.
Derivatives, Policy [Policy Text Block]	'
	The Company recognizes derivative financial instruments in the consolidated financial statements at fair value regardless of the purpose or intent for holding the instrument. The Company records derivative assets and derivative liabilities on the Consolidated Statements of Condition within accrued interest receivable and other assets and accrued interest payable and other liabilities, respectively. Changes in the fair value of derivative financial instruments are either recognized in income or in shareholders’ equity as a component of other comprehensive income depending on whether the derivative financial instrument qualifies for hedge accounting and, if so, whether it qualifies as a fair value hedge or cash flow hedge. Generally, changes in fair values of derivatives accounted for as fair value hedges are recorded in income in the same period and in the same income statement line as changes in the fair values of the hedged items that relate to the hedged risk(s). Changes in fair values of derivative financial instruments accounted for as cash flow hedges, to the extent they are effective hedges, are recorded as a component of other comprehensive income, net of deferred taxes, and reclassified to earnings when the hedged transaction affects earnings. Changes in fair values of derivative financial instruments not designated in a hedging relationship pursuant to ASC 815, including changes in fair value related to the ineffective portion of cash flow hedges, are reported in non-interest income during the period of the change. Derivative financial instruments are valued by a third party and are corroborated through comparison with valuations provided by the respective counterparties. Fair values of certain mortgage banking derivatives (interest rate lock commitments and forward commitments to sell mortgage loans) are estimated based on changes in mortgage interest rates from the date of the loan commitment. The fair value of foreign currency derivatives is computed based on changes in foreign currency rates stated in the contract compared to those prevailing at the measurement date.
Offsetting of Derivative Instruments	'
	The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative assets and liabilities on the Consolidated Statements of Condition
Fair Value Measurement	'
	The Company measures, monitors and discloses certain of its assets and liabilities on a fair value basis. These financial assets and financial liabilities are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the assumptions used to determine fair value. These levels are:
	•	Level 1—unadjusted quoted prices in active markets for identical assets or liabilities.
	•	Level 2—inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability or inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	•	Level 3—significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
	A financial instrument’s categorization within the above valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the assets or liabilities.
Compensation Related Costs, Policy [Policy Text Block]	'
	Stock-based compensation is measured as the fair value of an award on the date of grant, and the measured cost is recognized over the period which the recipient is required to provide service in exchange for the award. The fair values of restricted share and performance-based stock awards are determined based on the average of the high and low trading prices on the grant date, and the fair value of stock options is estimated using a Black-Scholes option-pricing model that utilizes the assumptions outlined in the following table. Option-pricing models require the input of highly subjective assumptions and are sensitive to changes in the option's expected life and the price volatility of the underlying stock, which can materially affect the fair value estimate. Expected life has been based on historical exercise and termination behavior as well as the term of the option, but the expected life of the options granted pursuant to the LTIP awards has been based on the safe harbor rule of the SEC Staff Accounting Bulletin No. 107 “Share-Based Payment” as the Company believes historical exercise data may not provide a reasonable basis to estimate the expected term of these options. Expected stock price volatility is based on historical volatility of the Company's common stock, which correlates with the expected life of the options, and the risk-free interest rate is based on comparable U.S. Treasury rates. Management reviews and adjusts the assumptions used to calculate the fair value of an option on a periodic basis to better reflect expected trends.
	The following table presents the weighted average assumptions used to determine the fair value of options granted in the six month periods ending June 30, 2014 and 2013.
		Six Months Ended		Six Months Ended
		June 30,		June 30,
		2014		2013
	Expected dividend yield	0.4	%	0.5	%
	Expected volatility	30.8	%	59.6	%
	Risk-free rate	0.7	%	0.7	%
	Expected option life (in years)	4.5		4.5
	Stock based compensation is recognized based upon the number of awards that are ultimately expected to vest. Forfeitures are estimated based on historical forfeiture experience. In addition, for performance-based awards, an estimate is made of the number of shares expected to vest as a result of projected performance against the performance criteria in the award to determine the amount of compensation expense to recognize. The estimate is reevaluated periodically and total compensation expense is adjusted for any change in estimate in the current period. Stock-based compensation expense recognized in the Consolidated Statements of Income was $2.1 million in the second quarter of 2014 and $2.2 million in the second quarter of 2013, respectively, and $5.9 million and $4.5 million for the 2014 and 2013 year-to-date periods, respectively. The first quarter of 2014 includes a $2.1 million charge for a modification to the performance measurement criteria related to the 2011 LTIP performance-based stock grants that were vested and paid out in the first quarter of 2014. The cost of the modification was determined based on the stock price on the date of re-measurement and paid to the holders of the performance-based stock awards in cash. Similarly, in the first quarter of 2014, a modification was made to the performance measurement criteria related to the performance-based cash awards granted under the LTIP in 2011. These awards vested and were paid out in the first quarter of 2014 and the Company recognized an additional charge of $3.0 million related to the modification.
Tangible Equity Unit	'
	The prepaid stock purchase contracts were recorded as surplus (a component of shareholders’ equity), net of issuance costs, and the junior subordinated amortizing notes were recorded as debt within other borrowings. Issuance costs associated with the debt component were recorded as a discount within other borrowings and were amortized over the term of the instrument to December 15, 2013 at which time they were paid in full. The Company allocated the proceeds from the issuance of the TEU to equity and debt based on the relative fair values of the respective components of each unit.
	The aggregate fair values assigned to each component of the TEU offering at the issuance date were as follows:
	(Dollars in thousands, except per unit amounts)	Equity				Debt		TEU Total
		Component				Component
	Units issued (1)	4,600				4,600		4,600
	Unit price	$	40.271818			$	9.728182	$	50
	Gross proceeds	185,250				44,750		230,000
	Issuance costs, including discount	5,934				1,419		7,353
	Net proceeds	$	179,316			$	43,331	$	222,647
	Balance sheet impact
	Other borrowings	—				43,331		43,331
	Surplus	179,316				—		179,316
	-1	TEUs consisted of two components: one unit of the equity component and one unit of the debt component.
	The fair value of the debt component was determined using a discounted cash flow model using the following assumptions: (1) quarterly cash payments of 7.5%; (2) a maturity date of December 15, 2013; and (3) an assumed discount rate of 9.5%. The discount rate used for estimating the fair value was determined by obtaining yields for comparably-rated issuers trading in the market. The debt component was recorded at fair value, and the discount was amortized using the level yield method over the term of the instrument to the settlement date of December 15, 2013.
	The fair value of the equity component was determined using Black-Scholes valuation models applied to the range of stock prices contemplated by the terms of the TEU and used the following assumptions: (1) risk-free interest rate of 0.95%; (2) expected stock price volatility in the range of 35%-45%; (3) dividend yield plus stock borrow cost of 0.85%; and (4) term of 3.02 years.
	Each junior subordinated amortizing note, which had an initial principal amount of $9.728182, had a stated interest rate of 9.50% per annum, and had a scheduled final installment payment date of December 15, 2013. On each March 15, June 15, September 15 and December 15, the Company paid equal quarterly installments of $0.9375 on each amortizing note. The quarterly installment payable at March 15, 2011, however, was $0.989583. Each payment constituted a payment of interest and a partial repayment of principal. The issuance costs were amortized to interest expense using the effective-interest method.
	Each prepaid common stock purchase contract automatically settled on December 15, 2013 and the Company delivered 1.3333 shares of its common stock based on the applicable market value (the average of the volume weighted average price of Company common stock for the twenty (20) consecutive trading days ending on the third trading day immediately preceding December 15, 2013). Upon settlement, an amount equal to $1.00 per common share issued was reclassified from surplus to common stock.
Earnings Per Share	'
	Potentially dilutive common shares can result from stock options, restricted stock unit awards, stock warrants, the Company’s convertible preferred stock, tangible equity unit shares and shares to be issued under the Employee Stock Purchase Plan and the Directors Deferred Fee and Stock Plan, being treated as if they had been either exercised or issued, computed by application of the treasury stock method. While potentially dilutive common shares are typically included in the computation of diluted earnings per share, potentially dilutive common shares are excluded from this computation in periods in which the effect would reduce the loss per share or increase the income per share. For diluted earnings per share, net income applicable to common shares can be affected by the conversion of the Company’s convertible preferred stock. Where the effect of this conversion would reduce the loss per share or increase the income per share, net income applicable to common shares is not adjusted by the associated preferred dividends.

Business_Combinations_Tables

Business Combinations (Tables)	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
FDIC Indemnification Asset Roll Forward	'
	The following table summarizes the activity in the Company’s FDIC indemnification asset during the periods indicated:
		Three Months Ended						Six Months Ended
	(Dollars in thousands)	June 30,			June 30,			June 30,			June 30,
		2014			2013			2014			2013
	Balance at beginning of period	$	60,298		$	170,696		$	85,672		$	208,160
	Additions from acquisitions	—			—			—			—
	Additions from reimbursable expenses	2,067			2,827			3,349			7,860
	Amortization	(1,456		)	(1,653		)	(3,059		)	(4,121		)
	Changes in expected reimbursements from the FDIC for changes in expected credit losses	(13,645		)	(26,638		)	(29,029		)	(52,735		)
	Payments received from the FDIC	(1,149		)	(7,551		)	(10,818		)	(21,483		)
	Balance at end of period	$	46,115		$	137,681		$	46,115		$	137,681

AvailableForSale_Securities_Ta

Available-For-Sale Securities (Tables)	6 Months Ended
	Jun. 30, 2014
Available-for-sale Securities [Abstract]	'
Schedule Of The Available-For-Sale Securities Reconciliation	'
	The following tables are a summary of the available-for-sale securities portfolio as of the dates shown:
		30-Jun-14
	(Dollars in thousands)	Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
					Gains			Losses
	U.S. Treasury	$	399,031		$	354		$	(10,970	)	$	388,415
	U.S. Government agencies	798,889			4,458			(37,347		)	766,000
	Municipal	173,664			4,385			(1,942		)	176,107
	Corporate notes:
	Financial issuers	129,211			2,402			(1,387		)	130,226
	Other	4,980			97			—			5,077
	Mortgage-backed: (1)
	Mortgage-backed securities	255,082			5,190			(9,097		)	251,175
	Collateralized mortgage obligations	52,672			389			(673		)	52,388
	Equity securities	50,594			4,634			(376		)	54,852
	Total available-for-sale securities	$	1,864,123		$	21,909		$	(61,792	)	$	1,824,240
		31-Dec-13
		Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
	(Dollars in thousands)				Gains			Losses
	U.S. Treasury	$	354,262		$	141		$	(18,308	)	$	336,095
	U.S. Government agencies	950,086			1,680			(56,078		)	895,688
	Municipal	154,463			2,551			(4,298		)	152,716
	Corporate notes:
	Financial issuers	129,362			1,993			(2,411		)	128,944
	Other	5,994			105			(5		)	6,094
	Mortgage-backed: (1)
	Mortgage-backed securities	562,708			3,537			(18,047		)	548,198
	Collateralized mortgage obligations	57,711			258			(942		)	57,027
	Equity securities	50,532			1,493			(497		)	51,528
	Total available-for-sale securities	$	2,265,118		$	11,758		$	(100,586	)	$	2,176,290
		30-Jun-13
		Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
	(Dollars in thousands)				Gains			Losses
	U.S. Treasury	$	225,200		$	134		$	(14,359	)	$	210,975
	U.S. Government agencies	996,137			1,976			(39,655		)	958,458
	Municipal	152,208			1,281			(3,362		)	150,127
	Corporate notes:
	Financial issuers	133,453			2,290			(2,783		)	132,960
	Other	8,838			135			—			8,973
	Mortgage-backed: (1)
	Mortgage-backed securities	279,925			3,971			(14,866		)	269,030
	Collateralized mortgage obligations	63,833			434			(530		)	63,737
	Equity securities	52,437			746			(3,619		)	49,564
	Total available-for-sale securities	$	1,912,031		$	10,967		$	(79,174	)	$	1,843,824
	-1	Consisting entirely of residential mortgage-backed securities, none of which are subprime.
Available-For-Sale Securities, Continuous Unrealized Loss Position, Fair Value	'
	The following table presents the portion of the Company’s available-for-sale securities portfolio which has gross unrealized losses, reflecting the length of time that individual securities have been in a continuous unrealized loss position at June 30, 2014:
		Continuous unrealized						Continuous unrealized						Total
		losses existing for						losses existing for
		less than 12 months						greater than 12 months
	(Dollars in thousands)	Fair Value			Unrealized Losses			Fair Value			Unrealized Losses			Fair Value		Unrealized Losses
	U.S. Treasury	$	—		$	—		$	189,188		$	(10,970	)	$	189,188	$	(10,970	)
	U.S. Government agencies	26,310			(460		)	445,927			(36,887		)	472,237		(37,347		)
	Municipal	5,866			(36		)	55,190			(1,906		)	61,056		(1,942		)
	Corporate notes:
	Financial issuers	1,326			(3		)	57,808			(1,384		)	59,134		(1,387		)
	Other	—			—			—			—			—		—
	Mortgage-backed:
	Mortgage-backed securities	6			—			143,712			(9,097		)	143,718		(9,097		)
	Collateralized mortgage obligations	7,043			(130		)	14,261			(543		)	21,304		(673		)
	Equity securities	—			—			13,425			(376		)	13,425		(376		)
	Total	$	40,551		$	(629	)	$	919,511		$	(61,163	)	$	960,062	$	(61,792	)
Schedule Of Realized Gain (Loss)	'
	The following table provides information as to the amount of gross gains and gross losses realized and proceeds received through the sales of available-for-sale investment securities:
		Three months ended						Six months ended
	(Dollars in thousands)	June 30,			June 30,			June 30,			June 30,
		2014			2013			2014			2013
	Realized gains	$	99		$	3		$	154		$	316
	Realized losses	(435		)	(1		)	(523		)	(63		)
	Net realized (losses) gains	$	(336	)	$	2		$	(369	)	$	253
	Other than temporary impairment charges	—			—			—			—
	(Losses) gains on available-for-sale securities, net	$	(336	)	$	2		$	(369	)	$	253
	Proceeds from sales of available-for-sale securities	$	169,753		$	43,403		$	196,042		$	84,459
Investments Classified by Contractual Maturity Date	'
	The amortized cost and fair value of securities as of June 30, 2014, December 31, 2013 and June 30, 2013, by contractual maturity, are shown in the following table. Contractual maturities may differ from actual maturities as borrowers may have the right to call or repay obligations with or without call or prepayment penalties. Mortgage-backed securities are not included in the maturity categories in the following maturity summary as actual maturities may differ from contractual maturities because the underlying mortgages may be called or prepaid without penalties:
		30-Jun-14						31-Dec-13						30-Jun-13
	(Dollars in thousands)	Amortized Cost			Fair Value			Amortized Cost			Fair Value			Amortized Cost		Fair Value
	Due in one year or less	$	173,991		$	174,220		$	268,847		$	269,168		$	284,334	$	284,734
	Due in one to five years	361,300			362,423			358,108			358,357			320,175		320,189
	Due in five to ten years	319,641			310,196			350,372			330,020			382,837		366,341
	Due after ten years	650,843			618,986			616,840			561,992			528,490		490,229
	Mortgage-backed	307,754			303,563			620,419			605,225			343,758		332,767
	Equity securities	50,594			54,852			50,532			51,528			52,437		49,564
	Total available-for-sale securities	$	1,864,123		$	1,824,240		$	2,265,118		$	2,176,290		$	1,912,031	$	1,843,824

Loans_Tables

Loans (Tables)	6 Months Ended
	Jun. 30, 2014
Loans and Leases Receivable Disclosure [Abstract]	'
Summary Of Loan Portfolio	'
	The following table shows the Company’s loan portfolio by category as of the dates shown:
		June 30,			December 31,			June 30,
	(Dollars in thousands)	2014			2013			2013
	Balance:
	Commercial	$	3,640,430		$	3,253,687		$	3,119,931
	Commercial real-estate	4,353,472			4,230,035			4,094,628
	Home equity	713,642			719,137			758,260
	Residential real-estate	451,905			434,992			384,961
	Premium finance receivables—commercial	2,378,529			2,167,565			2,165,734
	Premium finance receivables—life insurance	2,051,645			1,923,698			1,821,147
	Consumer and other	160,373			167,488			172,231
	Total loans, net of unearned income, excluding covered loans	$	13,749,996		$	12,896,602		$	12,516,892
	Covered loans	275,154			346,431			454,602
	Total loans	$	14,025,150		$	13,243,033		$	12,971,494
	Mix:
	Commercial	26		%	25		%	24		%
	Commercial real-estate	31			32			31
	Home equity	5			5			6
	Residential real-estate	3			3			3
	Premium finance receivables—commercial	17			16			16
	Premium finance receivables—life insurance	15			15			14
	Consumer and other	1			1			2
	Total loans, net of unearned income, excluding covered loans	98		%	97		%	96		%
	Covered loans	2			3			4
	Total loans	100		%	100		%	100		%
Schedule Of Unpaid Principal Balance And Carrying Value Of Acquired Loans Table [Text Block]	'
	The following table presents the unpaid principal balance and carrying value for these acquired loans:
		30-Jun-14						31-Dec-13
		Unpaid			Carrying			Unpaid			Carrying
		Principal						Principal
	(Dollars in thousands)	Balance			Value			Balance			Value
	Bank acquisitions	$	349,565		$	265,522		$	453,944		$	338,517
	Life insurance premium finance loans acquisition	419,805			409,760			437,155			423,906
Activity Related To Accretable Yield Of Loans Acquired With Evidence Of Credit Quality Deterioratio Since Origination	'
	Changes in expected cash flows may vary from period to period as the Company periodically updates its cash flow model assumptions for loans acquired with evidence of credit quality deterioration since origination. The factors that most significantly affect the estimates of gross cash flows expected to be collected, and accordingly the accretable yield, include changes in the benchmark interest rate indices for variable-rate products and changes in prepayment assumptions and loss estimates. The following table provides activity for the accretable yield of loans acquired with evidence of credit quality deterioration since origination:
		Three Months Ended						Three Months Ended
		30-Jun-14						30-Jun-13
	(Dollars in thousands)	Bank Acquisitions			Life Insurance			Bank			Life Insurance
					Premium Finance Loans			Acquisitions			Premium
											Finance Loans
	Accretable yield, beginning balance	$	97,674		$	6,561		$	121,725		$	11,218
	Acquisitions	—			—			2,055			—
	Accretable yield amortized to interest income	(9,617		)	(1,433		)	(9,347		)	(2,254		)
	Accretable yield amortized to indemnification asset (1)	(11,161		)	—			(11,906		)	—
	Reclassification from non-accretable difference (2)	17,928			—			30,792			1,007
	(Decreases) increases in interest cash flows due to payments and changes in interest rates	(2,722		)	51			(2,463		)	316
	Accretable yield, ending balance (3)	$	92,102		$	5,179		$	130,856		$	10,287
		Six Months Ended						Six Months Ended
		30-Jun-14						30-Jun-13
	(Dollars in thousands)	Bank Acquisitions			Life Insurance			Bank			Life Insurance
					Premium Finance Loans			Acquisitions			Premium
											Finance Loans
	Accretable yield, beginning balance	$	107,655		$	8,254		$	143,224		$	13,055
	Acquisitions	—			—			1,977			—
	Accretable yield amortized to interest income	(17,387		)	(3,204		)	(18,924		)	(4,273		)
	Accretable yield amortized to indemnification asset (1)	(16,809		)	—			(20,612		)	—
	Reclassification from non-accretable difference (2)	26,508			—			36,204			1,007
	(Decreases) increases in interest cash flows due to payments and changes in interest rates	(7,865		)	129			(11,013		)	498
	Accretable yield, ending balance (3)	$	92,102		$	5,179		$	130,856		$	10,287
	-1	Represents the portion of the current period accreted yield, resulting from lower expected losses, applied to reduce the loss share indemnification asset.
	-2	Reclassification is the result of subsequent increases in expected principal cash flows.
	-3	As of June 30, 2014, the Company estimates that the remaining accretable yield balance to be amortized to the indemnification asset for the bank acquisitions is $30.0 million. The remainder of the accretable yield related to bank acquisitions is expected to be amortized to interest income.

Allowance_for_Loan_Losses_Allo1

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Tables)	6 Months Ended
	Jun. 30, 2014
Loans and Leases Receivable, Allowance [Abstract]	'
Schedule Of Aging Of The Company's Loan Portfolio	'
	The tables below show the aging of the Company’s loan portfolio at June 30, 2014, December 31, 2013 and June 30, 2013:
	As of June 30, 2014					90+ days and still accruing				60-89 days past due				30-59 days past due
	(Dollars in thousands)	Nonaccrual																Current				Total Loans
	Loan Balances:
	Commercial
	Commercial and industrial	$	6,216			$	—			$	4,165			$	21,610			$	1,980,489			$	2,012,480
	Franchise	—				—				—				549				222,907				223,456
	Mortgage warehouse lines of credit	—				—				—				1,680				146,531				148,211
	Community Advantage—homeowners association	—				—				—				—				94,009				94,009
	Aircraft	—				—				—				—				7,847				7,847
	Asset-based lending	295				—				—				6,047				772,002				778,344
	Tax exempt	—				—				—				—				208,913				208,913
	Leases	—				—				—				36				144,399				144,435
	Other	—				—				—				—				9,792				9,792
	PCI - commercial (1)	—				1,452				—				224				11,267				12,943
	Total commercial	6,511				1,452				4,165				30,146				3,598,156				3,640,430
	Commercial real-estate:
	Residential construction	—				—				—				18				29,941				29,959
	Commercial construction	839				—				—				—				154,220				155,059
	Land	2,367				—				614				4,502				98,444				105,927
	Office	10,950				—				999				3,911				652,057				667,917
	Industrial	5,097				—				899				690				610,954				617,640
	Retail	6,909				—				1,334				2,560				686,292				697,095
	Multi-family	689				—				244				4,717				630,519				636,169
	Mixed use and other	9,470				309				5,384				12,300				1,350,976				1,378,439
	PCI - commercial real-estate (1)	—				15,682				155				1,595				47,835				65,267
	Total commercial real-estate	36,321				15,991				9,629				30,293				4,261,238				4,353,472
	Home equity	5,804				—				1,392				3,324				703,122				713,642
	Residential real estate	15,294				—				1,487				1,978				430,364				449,123
	PCI - residential real estate (1)	—				988				111				—				1,683				2,782
	Premium finance receivables
	Commercial insurance loans	12,298				10,275				12,335				14,672				2,328,949				2,378,529
	Life insurance loans	—				649				896				4,783				1,635,557				1,641,885
	PCI - life insurance loans (1)	—				—				—				—				409,760				409,760
	Consumer and other	1,116				73				558				600				157,828				160,175
	PCI - consumer and other (1)	—				—				4				—				194				198
	Total loans, net of unearned income, excluding covered loans	$	77,344			$	29,428			$	30,577			$	85,796			$	13,526,851			$	13,749,996
	Covered loans	6,690				34,486				4,003				1,482				228,493				275,154
	Total loans, net of unearned income	$	84,034			$	63,914			$	34,580			$	87,278			$	13,755,344			$	14,025,150
	-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
	As of December 31, 2013					90+ days and still accruing				60-89 days past due				30-59 days past due
	(Dollars in thousands)	Nonaccrual																Current				Total Loans
	Loan Balances:
	Commercial
	Commercial and industrial	$	10,143			$	—			$	4,938			$	7,404			$	1,813,721			$	1,836,206
	Franchise	—				—				400				—				219,983				220,383
	Mortgage warehouse lines of credit	—				—				—				—				67,470				67,470
	Community Advantage—homeowners association	—				—				—				—				90,894				90,894
	Aircraft	—				—				—				—				10,241				10,241
	Asset-based lending	637				—				388				1,878				732,190				735,093
	Tax exempt	—				—				—				—				161,239				161,239
	Leases	—				—				—				788				109,043				109,831
	Other	—				—				—				—				11,147				11,147
	PCI - commercial (1)	—				274				156				1,685				9,068				11,183
	Total commercial	10,780				274				5,882				11,755				3,224,996				3,253,687
	Commercial real-estate
	Residential construction	149				—				—				—				38,351				38,500
	Commercial construction	6,969				—				—				505				129,232				136,706
	Land	2,814				—				4,224				619				99,128				106,785
	Office	10,087				—				2,265				3,862				626,027				642,241
	Industrial	5,654				—				585				914				626,785				633,938
	Retail	10,862				—				837				2,435				642,125				656,259
	Multi-family	2,035				—				—				348				564,154				566,537
Mixed use and other	8,088				230				3,943				15,949				1,344,244				1,372,454
PCI - commercial real-estate (1)	—				18,582				3,540				5,238				49,255				76,615
Total commercial real-estate	46,658				18,812				15,394				29,870				4,119,301				4,230,035
Home equity	10,071				—				1,344				3,060				704,662				719,137
Residential real-estate	14,974				—				1,689				5,032				410,430				432,125
PCI - residential real-estate (1)	—				1,988				—				—				879				2,867
Premium finance receivables
Commercial insurance loans	10,537				8,842				6,912				24,094				2,117,180				2,167,565
Life insurance loans	—				—				2,524				1,808				1,495,460				1,499,792
PCI - life insurance loans (1)	—				—				—				—				423,906				423,906
Consumer and other	1,137				105				76				1,010				163,956				166,284
PCI - consumer and other (1)	—				181				—				—				1,023				1,204
Total loans, net of unearned income, excluding covered loans	$	94,157			$	30,202			$	33,821			$	76,629			$	12,661,793			$	12,896,602
Covered loans	9,425				56,282				5,877				7,937				266,910				346,431
Total loans, net of unearned income	$	103,582			$	86,484			$	39,698			$	84,566			$	12,928,703			$	13,243,033
-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
As of June 30, 2013					90+ days and still accruing				60-89 days past due				30-59 days past due
(Dollars in thousands)	Nonaccrual																Current				Total Loans
Loan Balances:
Commercial
Commercial and industrial	$	15,432			$	—			$	2,940			$	12,111			$	1,665,753			$	1,696,236
Franchise	—				—				—				450				201,790				202,240
Mortgage warehouse lines of credit	—				—				—				—				174,422				174,422
Community Advantage—homeowners association	—				—				—				—				83,003				83,003
Aircraft	—				—				—				—				13,174				13,174
Asset-based lending	1,816				100				2,305				4,949				676,531				685,701
Tax exempt	—				—				—				—				151,492				151,492
Leases	—				—				—				—				102,409				102,409
Other	—				—				—				—				98				98
PCI - commercial (1)	—				190				—				1,632				9,334				11,156
Total commercial	17,248				290				5,245				19,142				3,078,006				3,119,931
Commercial real-estate:
Residential construction	2,659				3,263				379				—				32,998				39,299
Commercial construction	7,857				—				1,271				70				128,845				138,043
Land	5,742				—				330				4,141				106,640				116,853
Office	6,324				—				4,210				2,720				584,503				597,757
Industrial	5,773				—				4,597				4,984				600,147				615,501
Retail	7,471				—				1,760				2,031				596,129				607,391
Multi-family	3,337				—				401				3,149				526,681				533,568
Mixed use and other	15,662				—				2,183				10,379				1,350,581				1,378,805
PCI - commercial real-estate (1)	—				6,466				3,430				6,226				51,289				67,411
Total commercial real-estate	54,825				9,729				18,561				33,700				3,977,813				4,094,628
Home equity	12,322				25				2,085				5,821				738,007				758,260
Residential real estate	10,213				—				1,896				1,836				368,696				382,641
PCI - residential real estate (1)	—				—				46				260				2,014				2,320
Premium finance receivables
Commercial insurance loans	13,605				6,671				6,592				11,386				2,127,480				2,165,734
Life insurance loans	16				1,212				7,896				—				1,337,573				1,346,697
PCI - life insurance loans (1)	—				—				—				—				474,450				474,450
Consumer and other	1,768				217				512				584				168,812				171,893
PCI - consumer and other (1)	—				28				—				—				310				338
Total loans, net of unearned income, excluding covered loans	$	109,997			$	18,172			$	42,833			$	72,729			$	12,273,161			$	12,516,892
Covered loans	3,982				97,000				10,568				4,852				338,200				454,602
Total loans, net of unearned income	$	113,979			$	115,172			$	53,401			$	77,581			$	12,611,361			$	12,971,494
-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
Summary Of Recorded Investment Based On Performance Of Loans By Class	'
	The following table presents the recorded investment based on performance of loans by class, excluding covered loans, per the most recent analysis at June 30, 2014, December 31, 2013 and June 30, 2013:
		Performing												Non-performing											Total
	(Dollars in thousands)	30-Jun-14				31-Dec-13				30-Jun-13				30-Jun-14				31-Dec-13				30-Jun-13			30-Jun-14			31-Dec-13		30-Jun-13
	Loan Balances:
	Commercial
	Commercial and industrial	$	2,006,264			$	1,826,063			$	1,680,804			$	6,216			$	10,143			$	15,432		$	2,012,480		$	1,836,206	$	1,696,236
	Franchise	223,456				220,383				202,240				—				—				—			223,456			220,383		202,240
	Mortgage warehouse lines of credit	148,211				67,470				174,422				—				—				—			148,211			67,470		174,422
	Community Advantage—homeowners association	94,009				90,894				83,003				—				—				—			94,009			90,894		83,003
	Aircraft	7,847				10,241				13,174				—				—				—			7,847			10,241		13,174
	Asset-based lending	778,049				734,456				683,785				295				637				1,916			778,344			735,093		685,701
	Tax exempt	208,913				161,239				151,492				—				—				—			208,913			161,239		151,492
	Leases	144,435				109,831				102,409				—				—				—			144,435			109,831		102,409
	Other	9,792				11,147				98				—				—				—			9,792			11,147		98
	PCI - commercial (1)	12,943				11,183				11,156				—				—				—			12,943			11,183		11,156
	Total commercial	3,633,919				3,242,907				3,102,583				6,511				10,780				17,348			3,640,430			3,253,687		3,119,931
	Commercial real-estate
	Residential construction	29,959				38,351				33,377				—				149				5,922			29,959			38,500		39,299
	Commercial construction	154,220				129,737				130,186				839				6,969				7,857			155,059			136,706		138,043
	Land	103,560				103,971				111,111				2,367				2,814				5,742			105,927			106,785		116,853
	Office	656,967				632,154				591,433				10,950				10,087				6,324			667,917			642,241		597,757
	Industrial	612,543				628,284				609,728				5,097				5,654				5,773			617,640			633,938		615,501
	Retail	690,186				645,397				599,920				6,909				10,862				7,471			697,095			656,259		607,391
	Multi-family	635,480				564,502				530,231				689				2,035				3,337			636,169			566,537		533,568
	Mixed use and other	1,368,660				1,364,136				1,363,143				9,779				8,318				15,662			1,378,439			1,372,454		1,378,805
	PCI - commercial real-estate(1)	65,267				76,615				67,411				—				—				—			65,267			76,615		67,411
	Total commercial real-estate	4,316,842				4,183,147				4,036,540				36,630				46,888				58,088			4,353,472			4,230,035		4,094,628
	Home equity	707,838				709,066				745,913				5,804				10,071				12,347			713,642			719,137		758,260
	Residential real-estate	433,829				417,151				372,428				15,294				14,974				10,213			449,123			432,125		382,641
	PCI - residential real-estate (1)	2,782				2,867				2,320				—				—				—			2,782			2,867		2,320
	Premium finance receivables
	Commercial insurance loans	2,355,956				2,148,186				2,145,458				22,573				19,379				20,276			2,378,529			2,167,565		2,165,734
	Life insurance loans	1,641,236				1,499,792				1,345,469				649				—				1,228			1,641,885			1,499,792		1,346,697
	PCI - life insurance loans (1)	409,760				423,906				474,450				—				—				—			409,760			423,906		474,450
	Consumer and other	158,986				165,042				169,908				1,189				1,242				1,985			160,175			166,284		171,893
	PCI - consumer and other(1)	198				1,204				338				—				—				—			198			1,204		338
	Total loans, net of unearned income, excluding covered loans	$	13,661,346			$	12,793,268			$	12,395,407			$	88,650			$	103,334			$	121,485		$	13,749,996		$	12,896,602	$	12,516,892
	-1	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. See Note 6 - Loans for further discussion of these purchased loans.
Summary Of Activity In The Allowance For Credit Losses By Loan Portfolio	'
	A summary of activity in the allowance for credit losses by loan portfolio (excluding covered loans) for the three months ended June 30, 2014 and 2013 is as follows:
	Three months ended June 30, 2014					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
	(Dollars in thousands)	Commercial
	Allowance for credit losses
	Allowance for loan losses at beginning of period	$	24,689			$	44,605			$	10,966			$	4,691			$	5,582			$	1,742		$	92,275
	Other adjustments	(22		)		(96		)		(1		)		(2		)		16				—			(105		)
	Reclassification from (to) allowance for unfunded lending-related commitments	—				(146		)		—				—				—				—			(146		)
	Charge-offs	(2,384		)		(2,351		)		(730		)		(689		)		(1,492		)		(213		)	(7,859		)
	Recoveries	270				342				122				74				314				153			1,275
	Provision for credit losses	3,485				(1,652		)		3,561				(341		)		1,889				(129		)	6,813
	Allowance for loan losses at period end	$	26,038			$	40,702			$	13,918			$	3,733			$	6,309			$	1,553		$	92,253
	Allowance for unfunded lending-related commitments at period end	$	—			$	884			$	—			$	—			$	—			$	—		$	884
	Allowance for credit losses at period end	$	26,038			$	41,586			$	13,918			$	3,733			$	6,309			$	1,553		$	93,137
	Individually evaluated for impairment	$	1,927			$	7,237			$	636			$	484			$	—			$	102		$	10,386
	Collectively evaluated for impairment	24,100				34,349				13,282				3,196				6,309				1,451			82,687
	Loans acquired with deteriorated credit quality	11				—				—				53				—				—			64
	Loans at period end
	Individually evaluated for impairment	$	12,397			$	100,068			$	6,030			$	18,680			$	—			$	1,560		$	138,735
	Collectively evaluated for impairment	3,615,090				4,188,137				707,612				430,443				4,020,414				158,615			13,120,311
	Loans acquired with deteriorated credit quality	12,943				65,267				—				2,782				409,760				198			490,950
	Three months ended June 30, 2013					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
	(Dollars in thousands)	Commercial
	Allowance for credit losses
	Allowance for loan losses at beginning of period	$	28,952			$	56,408			$	12,122			$	5,140			$	6,071			$	1,655		$	110,348
	Other adjustments	(1		)		(211		)		—				(85		)		(12		)		—			(309		)
	Reclassification from (to) allowance for unfunded lending-related commitments	—				65				—				—				—				—			65
	Charge-offs	(1,093		)		(14,947		)		(1,785		)		(517		)		(1,306		)		(128		)	(19,776		)
	Recoveries	268				584				171				18				279				61			1,381
	Provision for credit losses	605				10,057				3,697				269				236				269			15,133
	Allowance for loan losses at period end	$	28,731			$	51,956			$	14,205			$	4,825			$	5,268			$	1,857		$	106,842
	Allowance for unfunded lending-related commitments at period end	$	—			$	3,563			$	—			$	—			$	—			$	—		$	3,563
	Allowance for credit losses at period end	$	28,731			$	55,519			$	14,205			$	4,825			$	5,268			$	1,857		$	110,405
	Individually evaluated for impairment	$	5,587			$	7,411			$	1,060			$	606			$	—			$	218		$	14,882
	Collectively evaluated for impairment	23,066				47,994				13,145				4,209				5,268				1,639			95,321
	Loans acquired with deteriorated credit quality	78				114				—				10				—				—			202
	Loans at period end
	Individually evaluated for impairment	$	25,495			$	139,920			$	13,488			$	13,629			$	—			$	1,838		$	194,370
	Collectively evaluated for impairment	3,083,280				3,887,297				744,772				369,012				3,512,431				170,055			11,766,847
	Loans acquired with deteriorated credit quality	11,156				67,411				—				2,320				474,450				338			555,675
	Six months ended June 30, 2014					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
	(Dollars in thousands)	Commercial
	Allowance for credit losses
	Allowance for loan losses at beginning of period	$	23,092			$	48,658			$	12,611			$	5,108			$	5,583			$	1,870		$	96,922
	Other adjustments	(37		)		(217		)		(2		)		(4		)		7				—			(253		)
	Reclassification from (to) allowance for unfunded lending-related commitments	—				(164		)		—				—				—				—			(164		)
	Charge-offs	(3,032		)		(6,844		)		(2,997		)		(915		)		(2,702		)		(386		)	(16,876		)
	Recoveries	587				487				379				205				635				214			2,507
	Provision for credit losses	5,428				(1,218		)		3,927				(661		)		2,786				(145		)	10,117
	Allowance for loan losses at period end	$	26,038			$	40,702			$	13,918			$	3,733			$	6,309			$	1,553		$	92,253
	Allowance for unfunded lending-related commitments at period end	$	—			$	884			$	—			$	—			$	—			$	—		$	884
	Allowance for credit losses at period end	$	26,038			$	41,586			$	13,918			$	3,733			$	6,309			$	1,553		$	93,137
	Six months ended June 30, 2013					Commercial Real-estate				Home  Equity				Residential Real-estate				Premium Finance Receivable				Consumer and Other			Total, Excluding Covered Loans
	(Dollars in thousands)	Commercial
	Allowance for credit losses
	Allowance for loan losses at beginning of period	$	28,794			$	52,135			$	12,734			$	5,560			$	6,096			$	2,032		$	107,351
	Other adjustments	(4		)		(428		)		—				(94		)		(12		)		—			(538		)
	Reclassification from (to) allowance for unfunded lending-related commitments	—				(148		)		—				—				—				—			(148		)
	Charge-offs	(5,633		)		(18,246		)		(4,182		)		(2,245		)		(2,374		)		(257		)	(32,937		)
	Recoveries	563				952				333				23				573				170			2,614
	Provision for credit losses	5,011				17,691				5,320				1,581				985				(88		)	30,500
	Allowance for loan losses at period end	$	28,731			$	51,956			$	14,205			$	4,825			$	5,268			$	1,857		$	106,842
	Allowance for unfunded lending-related commitments at period end	$	—			$	3,563			$	—			$	—			$	—			$	—		$	3,563
	Allowance for credit losses at period end	$	28,731			$	55,519			$	14,205			$	4,825			$	5,268			$	1,857		$	110,405
Summary Of Activity In The Allowance For Covered Loan Losses	'
	A summary of activity in the allowance for covered loan losses for the three months ended June 30, 2014 and 2013 is as follows:
		Three Months Ended								Six Months Ended
		June 30,				June 30,				June 30,				June 30,
	(Dollars in thousands)	2014				2013				2014				2013
	Balance at beginning of period	$	3,447			$	12,272			$	10,092			$	13,454
	Provision for covered loan losses before benefit attributable to FDIC loss share agreements	(764		)		1,246				(7,885		)		2,846
	Benefit attributable to FDIC loss share agreements	611				(997		)		6,308				(2,277		)
	Net provision for covered loan losses	(153		)		249				(1,577		)		569
	(Decrease) increase in FDIC indemnification asset	(611		)		997				(6,308		)		2,277
	Loans charged-off	(2,189		)		(2,266		)		(5,053		)		(5,057		)
	Recoveries of loans charged-off	1,173				3,177				4,513				3,186
	Net recoveries (charge-offs)	(1,016		)		911				(540		)		(1,871		)
	Balance at end of period	$	1,667			$	14,429			$	1,667			$	14,429
Summary Of Impaired Loans, Including Restructured Loans	'
	A summary of impaired loans, including troubled debt restructurings ("TDRs"), is as follows:
		June 30,				December 31,				June 30,
	(Dollars in thousands)	2014				2013				2013
	Impaired loans (included in non-performing and TDRs):
	Impaired loans with an allowance for loan loss required (1)	$	91,511			$	92,184			$	96,519
	Impaired loans with no allowance for loan loss required	45,734				70,045				93,629
	Total impaired loans (2)	$	137,245			$	162,229			$	190,148
	Allowance for loan losses related to impaired loans	$	10,298			$	8,265			$	11,839
	TDRs	$	88,107			$	107,103			$	126,196
	-1	These impaired loans require an allowance for loan losses because the estimated fair value of the loans or related collateral is less than the recorded investment in the loans.
	-2	Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.
Summary Of Impaired Loans Evaluated For Impairment By Loan Class	'
	The following tables present impaired loans evaluated for impairment by loan class for the periods ended as follows:
														For the Six Months Ended
		As of June 30, 2014												30-Jun-14
		Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
	(Dollars in thousands)
	Impaired loans with a related ASC 310 allowance recorded
	Commercial
	Commercial and industrial	$	7,220			$	10,152			$	1,631			$	8,332			$	339
	Franchise	—				—				—				—				—
	Mortgage warehouse lines of credit	—				—				—				—				—
	Community Advantage—homeowners association	—				—				—				—				—
	Aircraft	—				—				—				—				—
	Asset-based lending	270				290				270				275				7
	Tax exempt	—				—				—				—				—
	Leases	—				—				—				—				—
	Other	—				—				—				—				—
	Commercial real-estate
	Residential construction	—				—				—				—				—
	Commercial construction	2,146				2,156				128				2,150				44
	Land	11,687				15,538				363				11,876				378
	Office	14,403				15,159				2,664				14,517				335
	Industrial	3,349				3,455				227				3,372				76
	Retail	14,320				14,733				1,590				14,343				304
	Multi-family	2,835				3,349				119				2,857				73
	Mixed use and other	27,418				27,565				2,111				28,474				551
	Home equity	1,562				1,616				636				1,567				30
	Residential real-estate	5,997				6,372				457				5,914				140
	Premium finance receivables
	Commercial insurance	—				—				—				—				—
	Life insurance	—				—				—				—				—
	PCI - life insurance	—				—				—				—				—
	Consumer and other	304				364				102				308				8
	Impaired loans with no related ASC 310 allowance recorded
	Commercial
	Commercial and industrial	$	4,222			$	8,666			$	—			$	4,591			$	219
	Franchise	—				—				—				—				—
	Mortgage warehouse lines of credit	—				—				—				—				—
	Community Advantage—homeowners association	—				—				—				—				—
	Aircraft	—				—				—				—				—
	Asset-based lending	25				1,952				—				150				50
	Tax exempt	—				—				—				—				—
	Leases	—				—				—				—				—
	Other	—				—				—				—				—
	Commercial real-estate
	Residential construction	—				—				—				—				—
	Commercial construction	1,031				1,031				—				1,051				23
	Land	3,917				4,958				—				5,657				131
	Office	2,598				2,599				—				2,605				73
	Industrial	3,603				3,839				—				3,155				95
	Retail	6,422				7,813				—				6,456				188
	Multi-family	440				966				—				497				22
	Mixed use and other	5,330				7,842				—				5,875				218
	Home equity	4,468				6,553				—				4,842				138
	Residential real-estate	12,422				15,538				—				12,836				295
	Premium finance receivables
	Commercial insurance	—				—				—				—				—
	Life insurance	—				—				—				—				—
	PCI - life insurance	—				—				—				—				—
	Consumer and other	1,256				1,775				—				1,260				53
	Total loans, net of unearned income, excluding covered loans	$	137,245			$	164,281			$	10,298			$	142,960			$	3,790
														For the Twelve Months Ended
		As of December 31, 2013												31-Dec-13
		Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
(Dollars in thousands)
Impaired loans with a related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	6,297			$	7,001			$	1,078			$	6,611			$	354
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	282				294				282				295				14
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	—				—				—				—				—
Commercial construction	3,099				3,099				18				3,098				115
Land	10,518				11,871				259				10,323				411
Office	7,792				8,444				1,253				8,148				333
Industrial	3,385				3,506				193				3,638				179
Retail	17,511				17,638				1,253				17,678				724
Multi-family	3,237				3,730				235				2,248				139
Mixed use and other	28,935				29,051				1,366				26,792				1,194
Home equity	3,985				5,238				1,593				4,855				236
Residential real-estate	6,876				7,023				626				6,335				273
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	267				269				109				273				11
Impaired loans with no related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	9,890			$	16,333			$	—			$	13,928			$	1,043
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	354				2,311				—				2,162				121
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	1,463				1,530				—				1,609				64
Commercial construction	7,710				13,227				—				9,680				722
Land	5,035				8,813				—				5,384				418
Office	10,379				11,717				—				10,925				610
Industrial	5,087				5,267				—				5,160				328
Retail	7,047				8,610				—				8,462				400
Multi-family	608				1,030				—				903				47
Mixed use and other	4,077				6,213				—				5,046				352
Home equity	6,312				7,790				—				6,307				324
Residential real-estate	10,761				13,585				—				9,443				393
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	1,322				1,865				—				1,355				115
Total loans, net of unearned income, excluding covered loans	$	162,229			$	195,455			$	8,265			$	170,658			$	8,920
													For the Six Months Ended
	As of June 30, 2013												30-Jun-13
	Recorded Investment				Unpaid Principal Balance				Related Allowance				Average  Recorded Investment				Interest Income Recognized
(Dollars in thousands)
Impaired loans with a related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	11,720			$	13,429			$	4,561			$	12,131			$	434
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	1,803				1,810				988				1,721				46
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	1,528				1,615				403				1,547				33
Commercial construction	10,591				10,591				67				10,853				207
Land	8,713				8,894				173				7,281				117
Office	9,306				9,411				685				9,385				170
Industrial	4,165				5,226				203				5,047				159
Retail	12,730				12,730				152				12,675				254
Multi-family	4,712				5,173				1,068				4,824				112
Mixed use and other	23,996				24,940				1,686				21,742				499
Home equity	3,454				4,857				1,060				4,183				87
Residential real-estate	3,155				3,666				575				2,905				62
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	646				648				218				650				17
Impaired loans with no related ASC 310 allowance recorded
Commercial
Commercial and industrial	$	11,028			$	14,384			$	—			$	12,155			$	393
Franchise	—				—				—				—				—
Mortgage warehouse lines of credit	—				—				—				—				—
Community Advantage—homeowners association	—				—				—				—				—
Aircraft	—				—				—				—				—
Asset-based lending	12				1,352				—				19				36
Tax exempt	—				—				—				—				—
Leases	—				—				—				—				—
Other	—				—				—				—				—
Commercial real-estate
Residential construction	4,100				4,481				—				3,782				81
Commercial construction	8,377				13,410				—				11,508				357
Land	8,195				13,910				—				9,791				331
Office	7,442				9,171				—				8,581				237
Industrial	5,178				5,321				—				5,234				141
Retail	16,114				17,374				—				15,512				406
Multi-family	894				3,009				—				1,235				74
Mixed use and other	10,856				13,464				—				9,623				293
Home equity	10,034				11,734				—				10,012				235
Residential real-estate	10,207				10,860				—				10,632				211
Premium finance receivables
Commercial insurance	—				—				—				—				—
Life insurance	—				—				—				—				—
Purchased life insurance	—				—				—				—				—
Consumer and other	1,192				1,736				—				1,221				52
Total loans, net of unearned income, excluding covered loans	$	190,148			$	223,196			$	11,839			$	194,249			$	5,044
Summary Of The Post-Modificatiopn Balance Of Loans Restructured	'
	Six months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
	30-Jun-14									Below Market							Rate (2)							Interest-only
										Terms (2)														Payments (2)
	(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
	Commercial
	Commercial and industrial		1			$	88			1			$	88			—			$	—			1		$	88		—	$	—
	Commercial real-estate
	Commercial construction		—			—				—			—				—			—				—		—			—	—
	Land		—			—				—			—				—			—				—		—			—	—
	Office		1			790				1			790				—			—				—		—			—	—
	Industrial		1			1,078				1			1,078				—			—				1		1,078			—	—
	Retail		1			202				1			202				—			—				—		—			—	—
	Multi-family		1			181				—			—				1			181				—		—			—	—
	Mixed use and other		7			4,926				3			2,837				7			4,926				1		1,273			—	—
	Residential real estate and other		1			220				1			220				—			—				1		220			—	—
	Total loans		13			$	7,485			8			$	5,215			8			$	5,107			4		$	2,659		—	$	—
	Six months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
	30-Jun-13									Below Market							Rate (2)							Interest-only
										Terms (2)														Payments (2)
	(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
	Commercial
	Commercial and industrial		6			$	708			5			$	573			4			$	553			2		$	185		—	$	—
	Commercial real-estate
	Commercial construction		3			6,120				3			6,120				—			—				3		6,120			—	—
	Land		2			287				2			287				2			287				—		—			1	73
	Office		3			3,465				3			3,465				—			—				—		—			—	—
	Industrial		1			949				1			949				1			949				—		—			—	—
	Retail		1			200				1			200				1			200				—		—			—	—
	Multi-family		1			705				1			705				1			705				—		—			—	—
	Mixed use and other		2			3,533				2			3,533				2			3,533				—		—			—	—
	Residential real estate and other		7			778				3			95				6			762				2		234			—	—
	Total loans		26			$	16,745			21			$	15,927			17			$	6,989			7		$	6,539		1	$	73
	-1	TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.
	-2	Balances represent the recorded investment in the loan at the time of the restructuring.
	The tables below present a summary of the post-modification balance of loans restructured during the three months ended June 30, 2014 and 2013, respectively, which represent TDRs:
	Three months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
	30-Jun-14									Below Market							Rate (2)							Interest-only
										Terms (2)														Payments (2)
	(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
	Commercial
	Commercial and industrial		—			$	—			—			$	—			—			$	—			—		$	—		—	$	—
	Commercial real-estate
	Commercial construction		—			—				—			—				—			—				—		—			—	—
	Land		—			—				—			—				—			—				—		—			—	—
	Office		1			790				1			790				—			—				—		—			—	—
	Industrial		—			—				—			—				—			—				—		—			—	—
	Retail		—			—				—			—				—			—				—		—			—	—
	Multi-family		1			181				—			—				1			181				—		—			—	—
	Mixed use and other		4			1,049				1			233				4			1,049				—		—			—	—
	Residential real estate and other		1			220				1			220				—			—				1		220			—	—
	Total loans		7			$	2,240			3			$	1,243			5			$	1,230			1		$	220		—	$	—
	Three months ended		Total (1)(2)							Extension at							Reduction of Interest							Modification to					Forgiveness of Debt(2)
	30-Jun-13									Below Market							Rate (2)							Interest-only
										Terms (2)														Payments (2)
	(Dollars in thousands)		Count			Balance				Count			Balance				Count			Balance				Count		Balance			Count	Balance
	Commercial
	Commercial and industrial		—			$	—			—			$	—			—			$	—			—		$	—		—	$	—
	Commercial real-estate
	Commercial construction		3			6,120				3			6,120				—			—				3		6,120			—	—
	Land		—			—				—			—				—			—				—		—			—	—
	Office		3			3,465				3			3,465				—			—				—		—			—	—
	Industrial		1			949				1			949				1			949				—		—			—	—
	Retail		—			—				—			—				—			—				—		—			—	—
Multi-family		—			—				—			—				—			—				—		—			—	—
Mixed use and other		2			3,533				2			3,533				2			3,533				—		—			—	—
Residential real estate and other		3			401				1			25				3			401				1		111			—	—
Total loans		12			$	14,468			10			$	14,092			6			$	4,883			4		$	6,231		—	$	—
-1	TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.
-2	Balances represent the recorded investment in the loan at the time of the restructuring.
Summary Of Loans Restuctured And Subsequently Defaulted Under The Restructured Terms	'
	The following table presents a summary of all loans restructured in TDRs during the twelve months ended June 30, 2014 and 2013, and such loans which were in payment default under the restructured terms during the respective periods below:
	(Dollars in thousands)	As of June 30, 2014							Three Months Ended							Six Months Ended
									June 30, 2014							30-Jun-14
		Total (1)(3)							Payments in Default  (2)(3)							Payments in Default  (2)(3)
		Count			Balance				Count			Balance				Count			Balance
	Commercial
	Commercial and industrial	1			$	88			—			$	—			—			$	—
	Commercial real-estate
	Residential construction	—			—				—			—				—			—
	Commercial construction	—			—				—			—				—			—
	Land	1			2,352				1			2,352				1			2,352
	Office	2			1,345				—			—				—			—
	Industrial	1			1,078				1			1,078				1			1,078
	Retail	1			202				—			—				—			—
	Multi-family	1			181				—			—				—			—
	Mixed use and other	11			6,436				3			577				3			577
	Residential real estate and other	4			1,738				1			169				1			169
	Total loans	22			$	13,420			6			$	4,176			6			$	4,176
	-1	Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.
	-2	TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.
	-3	Balances represent the recorded investment in the loan at the time of the restructuring.
	(Dollars in thousands)	As of June 30, 2013							Three Months Ended							Six Months Ended
									June 30, 2013							30-Jun-13
		Total (1)(3)							Payments in Default  (2)(3)							Payments in Default  (2)(3)
		Count			Balance				Count			Balance				Count			Balance
	Commercial
	Commercial and industrial	11			$	2,136			3			$	236			3			$	236
	Commercial real-estate
	Residential construction	1			496				—			—				—			—
	Commercial construction	3			6,120				—			—				—			—
	Land	2			287				—			—				—			—
	Office	3			3,465				1			1,648				1			1,648
	Industrial	2			1,676				1			727				1			727
	Retail	4			5,085				—			—				—			—
	Multi-family	2			1,085				1			705				1			705
	Mixed use and other	11			7,230				3			683				3			683
	Residential real estate and other	12			1,341				5			563				5			563
	Total loans	51			$	28,921			14			$	4,562			14			$	4,562
	-1	Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.
	-2	TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.
	-3	Balances represent the recorded investment in the loan at the time of the restructuring.

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill Assets By Business Segment	'
	A summary of the Company’s goodwill assets by business segment is presented in the following table:
	(Dollars in thousands)	January 1,			Goodwill			Impairment			Goodwill Adjustments		June 30,
		2014			Acquired			Loss					2014
	Community banking	$	305,313		$	600		$	—		$	—	$	305,913
	Specialty finance	37,370			6,435			—			139		43,944
	Wealth management	31,864			—			—			—		31,864
	Total	$	374,547		$	7,035		$	—		$	139	$	381,721
Summary Of Finite-Lived Intangible Assets	'
	A summary of finite-lived intangible assets as of the dates shown and the expected amortization as of June 30, 2014 is as follows:
	(Dollars in thousands)	June 30,			31-Dec-13			June 30,
		2014						2013
	Community banking segment:
	Core deposit intangibles:
	Gross carrying amount	$	40,770		$	40,770		$	39,350
	Accumulated amortization	(31,223		)	(29,189		)	(27,132		)
	Net carrying amount	$	9,547		$	11,581		$	12,218
	Specialty finance segment:
	Customer list intangibles:
	Gross carrying amount	$	1,800		$	1,800		$	1,800
	Accumulated amortization	(878		)	(805		)	(731		)
	Net carrying amount	$	922		$	995		$	1,069
	Wealth management segment:
	Customer list and other intangibles:
	Gross carrying amount	$	7,690		$	7,690		$	7,690
	Accumulated amortization	(1,265		)	(1,053		)	(840		)
	Net carrying amount	$	6,425		$	6,637		$	6,850
	Total other intangible assets, net	$	16,894		$	19,213		$	20,137
Estimated Amortization	'
	Estimated amortization
	Actual in six months ended June 30, 2014	$	2,319
	Estimated remaining in 2014	2,051
	Estimated—2015	2,791
	Estimated—2016	2,180
	Estimated—2017	1,764
	Estimated—2018	1,544

Deposits_Tables

Deposits (Tables)	6 Months Ended
	Jun. 30, 2014
Deposits [Abstract]	'
Summary Of Deposits	'
	The following table is a summary of deposits as of the dates shown:
	(Dollars in thousands)	June 30,			December 31, 2013			June 30,
		2014						2013
	Balance:
	Non-interest bearing	$	3,072,430		$	2,721,771		$	2,450,659
	NOW	2,002,868			1,953,882			2,147,004
	Wealth management deposits	1,220,102			1,013,850			1,083,897
	Money market	3,591,540			3,359,999			3,037,354
	Savings	1,427,222			1,392,575			1,304,619
	Time certificates of deposit	4,242,214			4,226,712			4,342,321
	Total deposits	$	15,556,376		$	14,668,789		$	14,365,854
	Mix:
	Non-interest bearing	20		%	19		%	17		%
	NOW	13			13			15
	Wealth management deposits	8			7			8
	Money market	23			23			21
	Savings	9			9			9
	Time certificates of deposit	27			29			30
	Total deposits	100		%	100		%	100		%

Notes_Payable_Federal_Home_Loa1

Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Summary Of Notes Payable, Federal Home Loan Bank Advances, Other Borrowings And Subordinated Notes	'
	The following table is a summary of notes payable, Federal Home Loan Bank advances, other borrowings and subordinated notes as of the dates shown:
	(Dollars in thousands)	June 30,		31-Dec-13		June 30,
		2014				2013
	Notes payable	$	—	$	364	$	1,729
	Federal Home Loan Bank advances	580,582		417,762		585,942
	Other borrowings:
	Securities sold under repurchase agreements	24,633		235,347		224,915
	Other	19,083		19,393		27,861
	Total other borrowings	43,716		254,740		252,776
	Subordinated notes	140,000		—		10,000
	Total notes payable, Federal Home Loan Bank advances, other borrowings and subordinated notes	$	764,298	$	672,866	$	850,447

Junior_Subordinated_Debentures1

Junior Subordinated Debentures (Tables)	6 Months Ended
	Jun. 30, 2014
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust [Abstract]	'
Summary Of The Company's Junior Subordinated Debentures	'
	The following table provides a summary of the Company’s junior subordinated debentures as of June 30, 2014. The junior subordinated debentures represent the par value of the obligations owed to the Trusts.
	(Dollars in thousands)	Common		Trust		Junior		Rate	Contractual rate		Issue	Maturity	Earliest
		Securities		Preferred		Subordinated		Structure	at 6/30/2014		Date	Date	Redemption
				Securities		Debentures							Date
	Wintrust Capital Trust III	$	774	$	25,000	$	25,774	L+3.25	3.48	%	Apr-03	Apr-33	Apr-08
	Wintrust Statutory Trust IV	619		20,000		20,619		L+2.80	3.03	%	Dec-03	Dec-33	Dec-08
	Wintrust Statutory Trust V	1,238		40,000		41,238		L+2.60	2.83	%	May-04	May-34	Jun-09
	Wintrust Capital Trust VII	1,550		50,000		51,550		L+1.95	2.18	%	Dec-04	Mar-35	Mar-10
	Wintrust Capital Trust VIII	1,238		40,000		41,238		L+1.45	1.68	%	Aug-05	Sep-35	Sep-10
	Wintrust Captial Trust IX	1,547		50,000		51,547		L+1.63	1.86	%	Sep-06	Sep-36	Sep-11
	Northview Capital Trust I	186		6,000		6,186		L+3.00	3.23	%	Aug-03	Nov-33	Aug-08
	Town Bankshares Capital Trust I	186		6,000		6,186		L+3.00	3.23	%	Aug-03	Nov-33	Aug-08
	First Northwest Capital Trust I	155		5,000		5,155		L+3.00	3.23	%	May-04	May-34	May-09
	Total					$	249,493		2.42	%

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	The following is a summary of certain operating information for reportable segments:
		Three months ended						$ Change in			% Change  in
	(Dollars in thousands)	June 30,			June 30,			Contribution			Contribution
		2014			2013
	Net interest income:
	Community Banking	$	121,228		$	111,366		$	9,862		9	%
	Specialty Finance	19,792			17,384			2,408			14
	Wealth Management	4,006			3,281			725			22
	Total Operating Segments	145,026			132,031			12,995			10
	Intersegment Eliminations	4,154			3,793			361			10
	Consolidated net interest income	$	149,180		$	135,824		$	13,356		10	%
	Non-interest income:
	Community Banking	$	33,337		$	45,365		$	(12,028	)	(27	)%
	Specialty Finance	8,455			8,193			262			3
	Wealth Management	19,235			16,681			2,554			15
	Total Operating Segments	61,027			70,239			(9,212		)	(13	)
	Intersegment Eliminations	(6,925		)	(6,244		)	(681		)	(11	)
	Consolidated non-interest income	$	54,102		$	63,995		$	(9,893	)	(15	)%
	Net revenue:
	Community Banking	$	154,565		$	156,731		$	(2,166	)	(1	)%
	Specialty Finance	28,247			25,577			2,670			10
	Wealth Management	23,241			19,962			3,279			16
	Total Operating Segments	206,053			202,270			3,783			2
	Intersegment Eliminations	(2,771		)	(2,451		)	(320		)	(13	)
	Consolidated net revenue	$	203,282		$	199,819		$	3,463		2	%
	Segment profit:
	Community Banking	$	24,628		$	21,995		$	2,633		12	%
	Specialty Finance	10,302			9,692			610			6
	Wealth Management	3,611			2,620			991			38
	Consolidated net income	$	38,541		$	34,307		$	4,234		12	%
	Segment assets:
	Community Banking	$	15,669,443		$	14,710,628		$	958,815		7	%
	Specialty Finance	2,703,761			2,418,208			285,553			12
	Wealth Management	522,477			484,710			37,767			8
	Consolidated total assets	$	18,895,681		$	17,613,546		$	1,282,135		7	%
		Six months ended						$ Change in			% Change  in
	(Dollars in thousands)	June 30,			June 30,			Contribution			Contribution
		2014			2013
	Net interest income:
	Community Banking	$	237,983		$	217,596		$	20,387		9	%
	Specialty Finance	39,004			34,866			4,138			12
	Wealth Management	8,105			6,728			1,377			20
	Total Operating Segments	285,092			259,190			25,902			10
	Intersegment Eliminations	8,094			7,347			747			10
	Consolidated net interest income	$	293,186		$	266,537		$	26,649		10	%
	Non-interest income:
	Community Banking	$	60,656		$	85,966		$	(25,310	)	(29	)%
	Specialty Finance	16,336			15,497			839			5
	Wealth Management	36,176			32,124			4,052			13
	Total Operating Segments	113,168			133,587			(20,419		)	(15	)
	Intersegment Eliminations	(13,537		)	(12,213		)	(1,324		)	(11	)
	Consolidated non-interest income	$	99,631		$	121,374		$	(21,743	)	(18	)%
	Net revenue:
	Community Banking	$	298,639		$	303,562		$	(4,923	)	(2	)%
	Specialty Finance	55,340			50,363			4,977			10
	Wealth Management	44,281			38,852			5,429			14
	Total Operating Segments	398,260			392,777			5,483			1
	Intersegment Eliminations	(5,443		)	(4,866		)	(577		)	(12	)
	Consolidated net revenue	$	392,817		$	387,911		$	4,906		1	%
	Segment profit:
	Community Banking	$	47,209		$	42,974		$	4,235		10	%
	Specialty Finance	19,284			18,321			963			5
	Wealth Management	6,548			5,064			1,484			29
Consolidated net income	$	73,041		$	66,359		$	6,682		10	%

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Interest Rate Cap Derivative Summary [Table Text Block]	'
	Below is a summary of the interest rate cap derivatives held by the Company as of June 30, 2014:
	(Dollars in thousands)
			Notional			Accounting	Fair Value as of
	Effective Date	Maturity Date	Amount			Treatment	30-Jun-14
	30-Sep-11	30-Sep-14	$	20,000		Cash Flow Hedging	$	—
	30-Sep-11	30-Sep-14	40,000			Cash Flow Hedging	—
	3-May-12	3-May-15	77,000			Non-Hedge Designated	—
	3-May-12	3-May-16	215,000			Non-Hedge Designated	172
	1-Jun-12	1-Apr-15	96,530			Non-Hedge Designated	—
	29-Aug-12	29-Aug-16	216,500			Cash Flow Hedging	389
	22-Feb-13	22-Aug-16	56,500			Non-Hedge Designated	134
	22-Feb-13	22-Aug-16	43,500			Cash Flow Hedging	103
	21-Mar-13	21-Mar-17	100,000			Non-Hedge Designated	686
	16-May-13	16-Nov-16	75,000			Non-Hedge Designated	288
	15-Sep-13	15-Sep-17	50,000			Cash Flow Hedging	637
	30-Sep-13	30-Sep-17	40,000			Cash Flow Hedging	534
			$	1,030,030			$	2,943
Schedule Of Fair Value Of Derivative Financial Instruments	'
	The table below presents the fair value of the Company’s derivative financial instruments as of June 30, 2014, December 31, 2013 and June 30, 2013:
		Derivative Assets												Derivative Liabilities
		Fair Value												Fair Value
	(Dollars in thousands)	June 30,				31-Dec-13				June 30,				June 30,				31-Dec-13				June 30,
		2014								2013				2014								2013
	Derivatives designated as hedging instruments under ASC 815:
	Interest rate derivatives designated as Cash Flow Hedges	$	1,663			$	1,776			$	2,146			$	2,727			$	3,160			$	4,416
	Interest rate derivatives designated as Fair Value Hedges	65				107				94				3				1				—
	Total derivatives designated as hedging instruments under ASC 815	$	1,728			$	1,883			$	2,240			$	2,730			$	3,161			$	4,416
	Derivatives not designated as hedging instruments under ASC 815:
	Interest rate derivatives	$	35,733			$	36,073			$	35,878			$	34,003			$	31,646			$	29,372
	Interest rate lock commitments	13,479				7,500				14,579				9				147				3,208
	Forward commitments to sell mortgage loans	27				2,761				7,835				6,901				2,310				583
	Foreign exchange contracts	—				4				22				7				—				75
	Total derivatives not designated as hedging instruments under ASC 815	$	49,239			$	46,338			$	58,314			$	40,920			$	34,103			$	33,238
	Total derivatives	$	50,967			$	48,221			$	60,554			$	43,650			$	37,264			$	37,654
Schedule Of Cash Flow Hedging Instruments	'
	The table below provides details on each of these cash flow hedges as of June 30, 2014:
		30-Jun-14
	(Dollars in thousands)	Notional				Fair Value
	Maturity Date	Amount				Asset (Liability)
	Interest Rate Swaps:
	Sep-16	50,000				(1,795		)
	Oct-16	25,000				(932		)
	Total Interest Rate Swaps	75,000				(2,727		)
	Interest Rate Caps:
	Sep-14	20,000				—
	Sep-14	40,000				—
	Aug-16	43,500				103
	Aug-16	216,500				389
	Sep-17	50,000				637
	Sep-17	40,000				534
	Total Interest Rate Caps	410,000				1,663
	Total Cash Flow Hedges	$	485,000			$	(1,064	)
Rollforward Of Amounts In Accumulated Other Comprehensive Income Related To Interest Rate Swaps Designated As Cash Flow Hedges	'
	A rollforward of the amounts in accumulated other comprehensive loss related to interest rate derivatives designated as cash flow hedges follows:
		Three months ended								Six months ended
	(Dollars in thousands)	June 30,				June 30,				June 30,				June 30,
		2014				2013				2014				2013
	Unrealized loss at beginning of period	$	(4,069	)		$	(7,199	)		$	(3,971	)		$	(8,673	)
	Amount reclassified from accumulated other comprehensive loss to interest expense on junior subordinated debentures	521				1,583				1,014				3,122
	Amount of (loss)/gain recognized in other comprehensive income	(1,147		)		586				(1,738		)		521
	Unrealized loss at end of period	$	(4,695	)		$	(5,030	)		$	(4,695	)		$	(5,030	)
Derivatives Used To Hedge Changes In Fair Value Attributable To Interest Rate Risk	'
	The following table presents the gain/(loss) and hedge ineffectiveness recognized on derivative instruments and the related hedged items that are designated as a fair value hedge accounting relationship as of June 30, 2014 and 2013:
	(Dollars in thousands)	Location of Gain/(Loss)		Amount of Gain/(Loss) Recognized								Amount of Gain/(Loss) Recognized								Income Statement Gain/
		Recognized in Income on		in Income on Derivative								in Income on Hedged Item								(Loss) due to Hedge
		Derivative		Three Months Ended								Three Months Ended								Ineffectiveness
																				Three Months Ended
	Derivatives in Fair Value
	Hedging Relationships			June 30,				June 30,				June 30,				June 30,				June 30,				June 30,
				2014				2013				2014				2013				2014				2013
	Interest rate products	Trading (losses)/gains, net		$	(26	)		$	67			$	25			$	(57	)		$	(1	)		$	10
	(Dollars in thousands)	Location of Gain/(Loss)		Amount of Gain/(Loss) Recognized								Amount of Gain/(Loss) Recognized								Income Statement Gain/
		Recognized in Income on		in Income on Derivative								in Income on Hedged Item								(Loss) due to Hedge
		Derivative		Six Months Ended								Six Months Ended								Ineffectiveness
																				Six Months Ended
	Derivatives in Fair Value
	Hedging Relationships			June 30,				June 30,				June 30,				June 30,				June 30,				June 30,
				2014				2013				2014				2013				2014				2013
	Interest rate products	Trading (losses)/gains, net		$	(43	)		$	56			$	40			$	(47	)		$	(3	)		$	9
Summary Amounts Included In Consolidated Statement Of Income Related To Derivatives	'
	Amounts included in the Consolidated Statements of Income related to derivative instruments not designated in hedge relationships were as follows:
	(Dollars in thousands)			Three Months Ended								Six Months Ended
	Derivative	Location in income statement		June 30,				June 30,				June 30,				June 30,
				2014				2013				2014				2013
	Interest rate swaps and caps	Trading (losses)/gains, net		$	(737	)		$	3,217			$	(1,414	)		$	2,920
	Mortgage banking derivatives	Mortgage banking revenue		(4,885		)		(2,368		)		(1,208		)		(3,038		)
	Covered call options	Fees from covered call options		1,244				993				2,786				2,632
	Foreign exchange contracts	Trading (losses)/gains, net		(10		)		79				(11		)		(67		)
Derivative Asset and Liability Balance Sheet Offsetting [Table Text Block]	'
	The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative assets and liabilities on the Consolidated Statements of Condition. The tables below summarize the Company's interest rate derivatives and offsetting positions as of the dates shown.
		Derivative Assets												Derivative Liabilities
		Fair Value												Fair Value
	(Dollars in thousands)	June 30,				31-Dec-13				June 30,				June 30,				31-Dec-13				June 30,
		2014								2013				2014								2013
	Gross Amounts Recognized	$	37,461			$	37,956			$	38,118			$	36,733			$	34,807			$	33,788
	Less: Amounts offset in the Statements of Financial Condition	$	—			$	—			$	—			$	—			$	—			$	—
	Net amount presented in the Statements of Financial Condition	$	37,461			$	37,956			$	38,118			$	36,733			$	34,807			$	33,788
	Gross amounts not offset in the Statements of Financial Condition
	Offsetting Derivative Positions	(3,738		)		(8,826		)		(8,192		)		(3,738		)		(8,826		)		(8,192		)
	Securities Collateral Posted (1)	—				—				—				(26,354		)		(25,981		)		(25,027		)
	Net Credit Exposure	$	33,723			$	29,130			$	29,926			$	6,641			$	—			$	569
	(1) As of December 31, 2013, the Company posted securities collateral of $34.6 million which resulted in excess collateral with its counterparties. For purposes of this disclosure, the amount of posted collateral is limited to the amount offsetting the derivative liability.

Fair_Values_of_Assets_and_Liab1

Fair Values of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Summary Of Balances Of Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
	The following tables present the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented:
		June 30, 2014
	(Dollars in thousands)	Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury	$	388,415		$	—		$	388,415		$	—
	U.S. Government agencies	766,000			—			766,000			—
	Municipal	176,107			—			138,054			38,053
	Corporate notes	135,303			—			135,303			—
	Mortgage-backed	303,563			—			303,563			—
	Equity securities	54,852			—			30,700			24,152
	Trading account securities	2,234			—			2,234			—
	Mortgage loans held-for-sale	363,627			—			363,627			—
	Mortgage servicing rights	8,227			—			—			8,227
	Nonqualified deferred compensation assets	7,850			—			7,850			—
	Derivative assets	50,967			—			50,967			—
	Total	$	2,257,145		$	—		$	2,186,713		$	70,432
	Derivative liabilities	$	43,650		$	—		$	43,650		$	—
			31-Dec-13
	(Dollars in thousands)		Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury		$	336,095		$	—		$	336,095		$	—
	U.S. Government agencies		895,688			—			895,688			—
	Municipal		152,716			—			116,330			36,386
	Corporate notes		135,038			—			135,038			—
	Mortgage-backed		605,225			—			605,225			—
	Equity securities		51,528			—			29,365			22,163
	Trading account securities		497			—			497			—
	Mortgage loans held-for-sale		332,485			—			332,485			—
	Mortgage servicing rights		8,946			—			—			8,946
	Nonqualified deferred compensation assets		7,222			—			7,222			—
	Derivative assets		48,221			—			48,221			—
	Total		$	2,573,661		$	—		$	2,506,166		$	67,495
	Derivative liabilities		$	37,264		$	—		$	37,264		$	—
		30-Jun-13
	(Dollars in thousands)	Total			Level 1			Level 2			Level 3
	Available-for-sale securities
	U.S. Treasury	$	210,975		$	—		$	210,975		$	—
	U.S. Government agencies	958,458			—			958,458			—
	Municipal	150,127			—			117,695			32,432
	Corporate notes	141,933			—			141,933			—
	Mortgage-backed	332,767			—			332,767			—
	Equity securities	49,564			—			27,136			22,428
	Trading account securities	659			—			659			—
	Mortgage loans held-for-sale	525,027			—			525,027			—
	Mortgage servicing rights	8,636			—			—			8,636
	Nonqualified deferred compensation assets	6,793			—			6,793			—
	Derivative assets	60,554			—			60,554			—
	Total	$	2,445,493		$	—		$	2,381,997		$	63,496
	Derivative liabilities	$	37,654		$	—		$	37,654		$	—
Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis during the three and six months ended June 30, 2014 and 2013 are summarized as follows:
					Equity securities			Mortgage
	(Dollars in thousands)	Municipal						servicing rights
	Balance at March 31, 2014	$	39,772		$	23,438		$	8,719
	Total net gains (losses) included in:
	Net loss (1)	—			—			(492		)
	Other comprehensive income	73			714			—
	Purchases	1,606			—			—
	Issuances	—			—			—
	Sales	—			—			—
	Settlements	(3,398		)	—			—
	Net transfers into/(out of) Level 3	—			—			—
	Balance at June 30, 2014	$	38,053		$	24,152		$	8,227
	-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
					Equity securities			Mortgage
	(Dollars in thousands)	Municipal						servicing rights
	Balance at January 1, 2014	$	36,386		$	22,163		$	8,946
	Total net gains (losses) included in:
	Net loss (1)	—			—			(719		)
	Other comprehensive income	220			1,989			—
	Purchases	4,966			—			—
	Issuances	—			—			—
	Sales	—			—			—
	Settlements	(3,519		)	—			—
	Net transfers into/(out of) Level 3	—			—			—
	Balance at June 30, 2014	$	38,053		$	24,152		$	8,227
	-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
					Equity securities			Mortgage
	(Dollars in thousands)	Municipal						servicing rights
	Balance at March 31, 2013	$	32,324		$	24,470		$	7,344
	Total net gains (losses) included in:
	Net income (1)	—			—			1,292
	Other comprehensive income	(302		)	(2,042		)	—
	Purchases	660			—			—
	Issuances	—			—			—
	Sales	—			—			—
	Settlements	(250		)	—			—
	Net transfers into/(out of) Level 3	—			—			—
	Balance at June 30, 2013	$	32,432		$	22,428		$	8,636
	-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
					Equity securities			Mortgage
	(Dollars in thousands)	Municipal						servicing rights
	Balance at January 1, 2013	$	30,770		$	22,169		$	6,750
	Total net gains (losses) included in:
	Net income (1)	—			—			1,886
	Other comprehensive income	(314		)	259			—
	Purchases	2,347			—			—
	Issuances	—			—			—
	Sales	—			—			—
	Settlements	(371		)	—			—
	Net transfers into/(out of) Level 3	—			—			—
	Balance at June 30, 2013	$	32,432		$	22,428		$	8,636
	-1	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
Summary Of Assets Measured At Fair Value On A Nonrecurring Basis	'
	For assets measured at fair value on a nonrecurring basis that were still held in the balance sheet at the end of the period, the following table provides the carrying value of the related individual assets or portfolios at June 30, 2014.
		June 30, 2014												Three Months		Six Months Ended June 30, 2014 Fair Value Losses Recognized, net
														Ended June 30, 2014
	(Dollars in thousands)	Total			Level 1			Level 2			Level 3			Fair Value Losses Recognized, net
	Impaired loans—collateral based	$	65,046		$	—		$	—		$	65,046		$	6,133	$	13,697
	Other real estate owned, including covered other real estate owned (1)	115,584			—			—			115,584			2,761		8,933
	Total	$	180,630		$	—		$	—		$	180,630		$	8,894	$	22,630
	-1	Fair value losses recognized, net on other real estate owned include valuation adjustments and charge-offs during the respective period.
Schedule Of Valuation Techniques And Significant Unobservable Inputs Used To Measure Both Recurring And Non-Recurring	'
	The valuation techniques and significant unobservable inputs used to measure both recurring and non-recurring Level 3 fair value measurements at June 30, 2014 were as follows:
	(Dollars in thousands)
		Fair Value			Valuation Methodology		Significant Unobservable Input	Range		Weighted	Impact to valuation
								of Inputs		Average	from an increased or
										of Inputs	higher input value
	Measured at fair value on a recurring basis:
	Municipal Securities	$	38,053		Bond pricing		Equivalent rating	BBB-AA+		N/A	Increase
	Equity Securities	24,152			Discounted cash flows		Discount rate	1.24%-2.10%		1.72%	Decrease
	Mortgage Servicing Rights	8,227			Discounted cash flows		Discount rate	9.5%-13%		9.66%	Decrease
							Constant prepayment rate (CPR)	11%-16%		12.68%	Decrease
	Measured at fair value on a non-recurring basis:
	Impaired loans—collateral based	$	65,046		Appraisal value		N/A	N/A		N/A	N/A
	Other real estate owned, including covered other real estate owned	115,584			Appraisal value		Property specific valuation adjustment	(40)% - 55%		-2.81%	Increase
Summary Of Carrying Amounts And Estimated Fair Values Of Financial Instruments	'
	The carrying amounts and estimated fair values of the Company’s financial instruments as of the dates shown:
		At June 30, 2014						At December 31, 2013						At June 30, 2013
		Carrying			Fair			Carrying			Fair			Carrying		Fair
	(Dollars in thousands)	Value			Value			Value			Value			Value		Value
	Financial Assets:
	Cash and cash equivalents	$	356,978		$	356,978		$	263,864		$	263,864		$	233,299	$	233,299
	Interest bearing deposits with banks	506,871			506,871			495,574			495,574			440,656		440,656
	Available-for-sale securities	1,824,240			1,824,240			2,176,290			2,176,290			1,843,824		1,843,824
	Trading account securities	2,234			2,234			497			497			659		659
	Federal Home Loan Bank and Federal Reserve Bank stock, at cost	84,531			84,531			79,261			79,261			79,354		79,354
	Brokerage customer receivables	28,199			28,199			30,953			30,953			26,214		26,214
	Mortgage loans held-for-sale, at fair value	363,627			363,627			332,485			332,485			525,027		525,027
	Mortgage loans held-for-sale, at lower of cost or market	—			—			1,842			1,857			12,964		13,113
	Total loans	14,025,150			14,741,579			13,243,033			13,867,255			12,971,494		13,613,298
	Mortgage servicing rights	8,227			8,227			8,946			8,946			8,636		8,636
	Nonqualified deferred compensation assets	7,850			7,850			7,222			7,222			6,793		6,793
	Derivative assets	50,967			50,967			48,221			48,221			60,554		60,554
	FDIC indemnification asset	46,115			46,115			85,672			85,672			137,681		137,681
	Accrued interest receivable and other	165,511			165,511			163,732			163,732			163,703		163,703
	Total financial assets	$	17,470,500		$	18,186,929		$	16,937,592		$	17,561,829		$	16,510,858	$	17,152,811
	Financial Liabilities
	Non-maturity deposits	$	11,314,162		$	11,314,162		$	10,442,077		$	10,442,077		$	10,023,533	$	10,023,533
	Deposits with stated maturities	4,242,214			4,255,896			4,226,712			4,242,172			4,342,321		4,359,361
	Notes payable	—			—			364			364			1,729		1,729
	Federal Home Loan Bank advances	580,582			585,792			417,762			422,750			585,942		591,183
	Other borrowings	43,716			43,716			254,740			254,740			252,776		252,776
	Subordinated notes	140,000			144,899			—			—			10,000		10,000
	Junior subordinated debentures	249,493			250,492			249,493			250,672			249,493		250,597
	Derivative liabilities	43,650			43,650			37,264			37,264			37,654		37,654
	Accrued interest payable	8,399			8,399			8,556			8,556			11,293		11,293
	Total financial liabilities	$	16,622,216		$	16,647,006		$	15,636,968		$	15,658,595		$	15,514,741	$	15,538,126

StockBased_Compensation_Plans_

Stock-Based Compensation Plans (Tables)	6 Months Ended
	Jun. 30, 2014
Share-based Compensation [Abstract]	'
Weighted Average Assumptions Used To Determine The Options Fair Value	'
	The following table presents the weighted average assumptions used to determine the fair value of options granted in the six month periods ending June 30, 2014 and 2013.
		Six Months Ended		Six Months Ended
		June 30,		June 30,
		2014		2013
	Expected dividend yield	0.4	%	0.5	%
	Expected volatility	30.8	%	59.6	%
	Risk-free rate	0.7	%	0.7	%
	Expected option life (in years)	4.5		4.5
Summary Of Stock Option Activity	'
	A summary of the Plans' stock option activity for the six months ended June 30, 2014 and June 30, 2013 is presented below:
	Stock Options	Common			Weighted		Remaining		Intrinsic
		Shares			Average		Contractual		Value (2)
					Strike Price		Term (1)		$0
	Outstanding at January 1, 2014	1,524,672			$	42
	Granted	364,767			46.85
	Exercised	(88,141	)		34.66
	Forfeited or canceled	(43,617	)		45.56
	Outstanding at June 30, 2014	1,757,681			$	43.29	3.5		$	9,833
	Exercisable at June 30, 2014	1,143,629			$	43.98	2.2		$	7,066
	Stock Options	Common			Weighted		Remaining		Intrinsic
		Shares			Average		Contractual		Value (2)
					Strike Price		Term (1)		$0
	Outstanding at January 1, 2013	1,745,427			$	42.31
	Granted	223,995			37.81
	Exercised	(44,658	)		28.27
	Forfeited or canceled	(16,765	)		38.64
	Outstanding at June 30, 2013	1,907,999			$	42.15	3.1		$	4,634
	Exercisable at June 30, 2013	1,399,796			$	45.04	2.1		$	2,552
	-1	Represents the remaining weighted average contractual life in years.
	-2	Aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company's stock price on the last trading day of the quarter and the option exercise price, multiplied by the number of shares) that would have been received by the option holders if they had exercised their options on the last day of the quarter. Options with exercise prices above the stock price on the last trading day of the quarter are excluded from the calculation of intrinsic value. The intrinsic value will change based on the fair market value of the Company's stock.
Summary Of Plans' Restricted Share And Performance-Vested Stock Award Activity	'
	A summary of the Plans' restricted share activity for the six months ended June 30, 2014 and June 30, 2013 is presented below:
		Six months ended June 30, 2014					Six months ended June 30, 2013
	Restricted Shares	Common			Weighted		Common			Weighted
		Shares			Average		Shares			Average
					Grant-Date					Grant-Date
					Fair Value					Fair Value
	Outstanding at January 1	181,522			$	43.39	314,226			$	37.99
	Granted	11,430			46.1		686			35.92
	Vested and issued	(32,328	)		34.57		(121,472	)		32.06
	Forfeited	(5,387	)		36.89		(872	)		32.42
	Outstanding at June 30	155,237			$	45.65	192,568			$	41.74
	Vested, but not issuable at June 30	85,000			$	51.88	85,000			$	51.88
	A summary of the 2007 Plan's performance-based stock award activity, based on the target level of the awards, for the six months ended June 30, 2014 and June 30, 2013 is presented below:
		Six months ended June 30, 2014					Six months ended June 30, 2013
	Performance-based Stock	Common			Weighted		Common			Weighted
		Shares			Average		Shares			Average
					Grant-Date					Grant-Date
					Fair Value					Fair Value
	Outstanding at January 1	307,512			$	34.01	214,565			$	32.08
	Granted	93,123			46.85		103,987			37.81
	Vested and issued	(15,944	)		33.28		—			—
	Forfeited	(87,046	)		33.64		(6,441	)		33.64
	Outstanding at June 30	297,645			$	38.18	312,111			$	33.96

Shareholders_Equity_and_Earnin1

Shareholders' Equity and Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]	'
Aggregate Fair Values Assigned To Each Component Of Tangible Equity Units Offering	'
	The aggregate fair values assigned to each component of the TEU offering at the issuance date were as follows:
	(Dollars in thousands, except per unit amounts)	Equity				Debt				TEU Total
		Component				Component
	Units issued (1)	4,600				4,600				4,600
	Unit price	$	40.271818			$	9.728182			$	50
	Gross proceeds	185,250				44,750				230,000
	Issuance costs, including discount	5,934				1,419				7,353
	Net proceeds	$	179,316			$	43,331			$	222,647
	Balance sheet impact
	Other borrowings	—				43,331				43,331
	Surplus	179,316				—				179,316
	-1	TEUs consisted of two components: one unit of the equity component and one unit of the debt component.
Components Of Other Comprehensive Income (Loss)	'
	The following tables summarize the components of other comprehensive income (loss), including the related income tax effects, and the related amount reclassified to net income for the periods presented (in thousands).
		Accumulated				Accumulated				Accumulated				Total
		Unrealized (Losses) Gains on Securities				Unrealized				Foreign				Accumulated
						Losses on				Currency				Other
						Derivative				Translation				Comprehensive
						Instruments				Adjustments				Income (Loss)
	Balance at April 1, 2014	$	(39,923	)		$	(2,521	)		$	(14,309	)		$	(56,753	)
	Other comprehensive income (loss) during the period, net of tax, before reclassifications	15,717				(691		)		6,707				21,733
	Amount reclassified from accumulated other comprehensive income, net of tax	203				314				—				517
	Net other comprehensive income (loss) during the period, net of tax	$	15,920			$	(377	)		$	6,707			$	22,250
	Balance at June 30, 2014	$	(24,003	)		$	(2,898	)		$	(7,602	)		$	(34,503	)
	Balance at January 1, 2014	$	(53,665	)		$	(2,462	)		$	(6,909	)		$	(63,036	)
	Other comprehensive income (loss) during the period, net of tax, before reclassifications	29,439				(1,047		)		(693		)		27,699
	Amount reclassified from accumulated other comprehensive income, net of tax	223				611				—				834
	Net other comprehensive income (loss)during the period, net of tax	$	29,662			$	(436	)		$	(693	)		$	28,533
	Balance at June 30, 2014	$	(24,003	)		$	(2,898	)		$	(7,602	)		$	(34,503	)
	Balance at April 1, 2013	$	1,910			$	(4,404	)		$	1,427			$	(1,067	)
	Other comprehensive (loss) income during the period, net of tax, before reclassifications	(43,122		)		351				(6,318		)		(49,089		)
	Amount reclassified from accumulated other comprehensive income, net of tax	(1		)		953				—				952
	Net other comprehensive (loss) income during the period, net of tax	$	(43,123	)		$	1,304			$	(6,318	)		$	(48,137	)
	Balance at June 30, 2013	$	(41,213	)		$	(3,100	)		$	(4,891	)		$	(49,204	)
	Balance at January 1, 2013	$	6,710			$	(5,292	)		$	6,293			$	7,711
	Other comprehensive (loss) income during the period, net of tax, before reclassifications	(47,771		)		312				(11,184		)		(58,643		)
	Amount reclassified from accumulated other comprehensive income, net of tax	(152		)		1,880				—				1,728
	Net other comprehensive (loss) income during the period, net of tax	$	(47,923	)		$	2,192			$	(11,184	)		$	(56,915	)
	Balance at June 30, 2013	$	(41,213	)		$	(3,100	)		$	(4,891	)		$	(49,204	)
Other Comprehensive Income Reclassified from AOCI	'
		Amount Reclassified from Accumulated Other Comprehensive Income for the
	Details Regarding the Component of	Three months ended								Six months ended							Impacted Line on the Consolidated Statements of Income
	Accumulated Other Comprehensive Income	30-Jun-14				30-Jun-13				30-Jun-14				30-Jun-13
	Accumulated unrealized losses on securities
	Gains included in net income	$	(336	)		$	2			$	(369	)		$	253		(Losses) gains on available-for-sale securities, net
		(336		)		2				(369		)		253			Income before taxes
	Tax effect	$	133			$	(1	)		$	146			$	(101	)	Income tax expense
	Net of tax	$	(203	)		$	1			$	(223	)		$	152		Net income
	Accumulated unrealized losses on derivative instruments
	Amount reclassified to interest expense on junior subordinated debentures	$	521			$	1,583			$	1,014			$	3,122		Interest on junior subordinated debentures
		(521		)		(1,583		)		(1,014		)		(3,122		)	Income before taxes
	Tax effect	$	207			$	630			$	403			$	1,242		Income tax expense
	Net of tax	$	(314	)		$	(953	)		$	(611	)		$	(1,880	)	Net income
Computation Of Basic And Diluted Earnings Per Common Share	'
	The following table shows the computation of basic and diluted earnings per share for the periods indicated:
				Three Months Ended								Six months ended
	(In thousands, except per share data)			30-Jun-14				30-Jun-13				30-Jun-14				June 30,
																2013
	Net income			$	38,541			$	34,307			$	73,041			$	66,359
	Less: Preferred stock dividends and discount accretion			1,581				2,617				3,162				5,233
	Net income applicable to common shares—Basic	(A)		36,960				31,690				69,879				61,126
	Add: Dividends on convertible preferred stock, if dilutive			1,581				2,581				3,162				5,162
	Net income applicable to common shares—Diluted	(B)		38,541				34,271				73,041				66,288
	Weighted average common shares outstanding	(C)		46,520				37,486				46,358				37,231
	Effect of dilutive potential common shares
	Common stock equivalents			1,327				7,334				1,381				7,343
	Convertible preferred stock, if dilutive			3,075				5,020				3,075				5,020
	Total dilutive potential common shares			4,402				12,354				4,456				12,363
	Weighted average common shares and effect of dilutive potential common shares	(D)		50,922				49,840				50,814				49,594
	Net income per common share:
	Basic	(A/C)		$	0.79			$	0.85			$	1.51			$	1.64
	Diluted	(B/D)		$	0.76			$	0.69			$	1.44			$	1.34

Business_Combinations_Summary_

Business Combinations (Summary Of FDIC Indemnification Asset) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
FDIC Indemnification Asset [Roll Forward]	'	'	'	'
Balance at beginning of period	$60,298	$170,696	$85,672	$208,160
Additions from acquisitions	0	0	0	0
Additions from reimbursable expenses	2,067	2,827	3,349	7,860
Amortization	-1,456	-1,653	-3,059	-4,121
Changes in expected reimbursements from the FDIC for changes in expected credit losses	-13,645	-26,638	-29,029	-52,735
Payments received from the FDIC	1,149	7,551	10,818	21,483
Balance at end of period	$46,115	$137,681	$46,115	$137,681

Business_Combinations_Narrativ

Business Combinations (Narrative) (Detail) (USD $)	6 Months Ended	0 Months Ended			54 Months Ended	0 Months Ended		12 Months Ended
	Jun. 30, 2014	16-May-14	Oct. 18, 2013	1-May-13	Jun. 30, 2014	Apr. 28, 2014	Oct. 02, 2013	Sep. 30, 2013	1-May-13	1-May-13	Feb. 01, 2013
		Urban Partnership Bank, Stone Park branch [Member]	Diamond Bancorp, Inc [Member]	First Lansing Bancorp, Inc. [Member]	FDIC Assisted [Member]	Policy Billing Services Inc. [Member]	Surety Financial Services [Member]	Surety Financial Services [Member]	South And Southwest Suburbs of Chicago, Illinois [Member]	Northwest Indiana [Member]	Second Federal [Member]
			locations		financial_institution			locations	First Lansing Bancorp, Inc. [Member]	First Lansing Bancorp, Inc. [Member]
									locations	locations
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Effective date of acquisition	'	16-May-14	18-Oct-13	1-May-13	'	28-Apr-14	1-Oct-13	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	'	$5,500,000	$169,100,000	$334,700,000	'	'	'	'	'	'	'
Assumed deposits	'	5,400,000	140,200,000	331,400,000	'	'	'	'	'	'	'
Additional goodwill recorded on acquisition	7,035,000	600,000	8,400,000	14,000,000	'	6,400,000	9,500,000	'	'	'	'
Number of locations	'	'	4	'	'	'	'	5	7	1	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	'	'	172,500,000	373,400,000	'	'	'	'	'	'	'
Business acquisition, loans acquired	'	'	91,700,000	123,000,000	'	7,400,000	'	'	'	'	'
Number of FDIC assisted banks acquired	'	'	'	'	9	'	'	'	'	'	'
FDIC loss sharing percentage on purchased loans, OREO, and certain other assets	80.00%	'	'	'	'	'	'	'	'	'	'
Divestiture of businesses, deposits disposed	'	'	'	'	'	'	'	'	'	'	149,000,000
Number of Affiliated Companies Acquired	'	'	'	'	'	2	'	'	'	'	'
Mortgage Loan Originations	'	'	'	'	'	'	'	$1,000,000,000	'	'	'

AvailableForSale_Securities_Sc

Available-For-Sale Securities (Schedule Of Available-For-Sale Securities Reconciliation) (Detail) (USD $)	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	$1,864,123		$2,265,118		$1,912,031
Gross unrealized gains	21,909		11,758		10,967
Gross unrealized losses	-61,792		-100,586		-79,174
Available-for-sale securities, at fair value	1,824,240		2,176,290		1,843,824
US Treasury [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	399,031		354,262		225,200
Gross unrealized gains	354		141		134
Gross unrealized losses	-10,970		-18,308		-14,359
Available-for-sale securities, at fair value	388,415		336,095		210,975
U.S. Government Agencies [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	798,889		950,086		996,137
Gross unrealized gains	4,458		1,680		1,976
Gross unrealized losses	-37,347		-56,078		-39,655
Available-for-sale securities, at fair value	766,000		895,688		958,458
Municipal [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	173,664		154,463		152,208
Gross unrealized gains	4,385		2,551		1,281
Gross unrealized losses	-1,942		-4,298		-3,362
Available-for-sale securities, at fair value	176,107		152,716		150,127
Corporate Notes, Financial Issuers [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	129,211		129,362		133,453
Gross unrealized gains	2,402		1,993		2,290
Gross unrealized losses	-1,387		-2,411		-2,783
Available-for-sale securities, at fair value	130,226		128,944		132,960
Corporate Notes, Other [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	4,980		5,994		8,838
Gross unrealized gains	97		105		135
Gross unrealized losses	0		-5		0
Available-for-sale securities, at fair value	5,077		6,094		8,973
Mortgage-Backed Securities [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	255,082	[1]	562,708	[1]	279,925	[1]
Gross unrealized gains	5,190	[1]	3,537	[1]	3,971	[1]
Gross unrealized losses	-9,097	[1]	-18,047	[1]	-14,866	[1]
Available-for-sale securities, at fair value	251,175	[1]	548,198	[1]	269,030	[1]
Mortgage-Backed, Collateralized Mortgage Obligations [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	52,672	[1]	57,711	[1]	63,833	[1]
Gross unrealized gains	389	[1]	258	[1]	434	[1]
Gross unrealized losses	-673	[1]	-942	[1]	-530	[1]
Available-for-sale securities, at fair value	52,388	[1]	57,027	[1]	63,737	[1]
Equity Securities [Member]	'		'		'
Schedule of Available-for-sale Securities [Line Items]	'		'		'
Amortized cost	50,594		50,532		52,437
Gross unrealized gains	4,634		1,493		746
Gross unrealized losses	-376		-497		-3,619
Available-for-sale securities, at fair value	$54,852		$51,528		$49,564
[1]	Consisting entirely of residential mortgage-backed securities, none of which are subprime.

AvailableForSale_Securities_Av

Available-For-Sale Securities (Available-For-Sale Securities, Continuous Unrealized Loss Position, Fair Value) (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	$40,551
Continuous unrealized losses existing for less than 12 months, Unrealized losses	-629
Continuous unrealized losses existing for greater than 12 months, Fair value	919,511
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-61,163
Total, Fair value	960,062
Total, Unrealized losses	-61,792
US Treasury [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	0
Continuous unrealized losses existing for less than 12 months, Unrealized losses	0
Continuous unrealized losses existing for greater than 12 months, Fair value	189,188
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-10,970
Total, Fair value	189,188
Total, Unrealized losses	-10,970
U.S. Government Agencies [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	26,310
Continuous unrealized losses existing for less than 12 months, Unrealized losses	-460
Continuous unrealized losses existing for greater than 12 months, Fair value	445,927
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-36,887
Total, Fair value	472,237
Total, Unrealized losses	-37,347
Municipal [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	5,866
Continuous unrealized losses existing for less than 12 months, Unrealized losses	-36
Continuous unrealized losses existing for greater than 12 months, Fair value	55,190
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-1,906
Total, Fair value	61,056
Total, Unrealized losses	-1,942
Corporate Notes, Financial Issuers [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	1,326
Continuous unrealized losses existing for less than 12 months, Unrealized losses	-3
Continuous unrealized losses existing for greater than 12 months, Fair value	57,808
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-1,384
Total, Fair value	59,134
Total, Unrealized losses	-1,387
Corporate Notes, Other [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	0
Continuous unrealized losses existing for less than 12 months, Unrealized losses	0
Continuous unrealized losses existing for greater than 12 months, Fair value	0
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	0
Total, Fair value	0
Total, Unrealized losses	0
Mortgage-Backed Securities [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	6
Continuous unrealized losses existing for less than 12 months, Unrealized losses	0
Continuous unrealized losses existing for greater than 12 months, Fair value	143,712
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-9,097
Total, Fair value	143,718
Total, Unrealized losses	-9,097
Mortgage-Backed, Collateralized Mortgage Obligations [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	7,043
Continuous unrealized losses existing for less than 12 months, Unrealized losses	-130
Continuous unrealized losses existing for greater than 12 months, Fair value	14,261
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-543
Total, Fair value	21,304
Total, Unrealized losses	-673
Equity Securities [Member]	'
Schedule of Available-for-sale Securities [Line Items]	'
Continuous unrealized losses existing for less than 12 months, Fair value	0
Continuous unrealized losses existing for less than 12 months, Unrealized losses	0
Continuous unrealized losses existing for greater than 12 months, Fair value	13,425
Continuous unrealized losses existing for greater than 12 months, Unrealized losses	-376
Total, Fair value	13,425
Total, Unrealized losses	($376)

AvailableForSale_Securities_Sc1

Available-For-Sale Securities (Schedule Of Realized Gain (Loss)) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Available-for-sale Securities [Abstract]	'	'	'	'
Realized gains	$99	$3	$154	$316
Realized losses	-435	-1	-523	-63
Net realized gains	-336	2	-369	253
Other than temporary impairment charges	0	0	0	0
(Losses) gains on available-for-sale securities, net	-336	2	-369	253
Proceeds from sales of available-for-sale securities	$169,753	$43,403	$196,042	$84,459

AvailableForSale_Securities_In

Available-For-Sale Securities (Investments Classified by Contractual Maturity Date) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Due in one year or less, Amortized Cost	$173,991	$268,847	$284,334
Due in one to five years, Amortized Cost	361,300	358,108	320,175
Due in five to ten years, Amortized Cost	319,641	350,372	382,837
Due after ten years, Amortized Cost	650,843	616,840	528,490
Available-for-sale securities, amortized cost	1,864,123	2,265,118	1,912,031
Due in one year or less, Fair Value	174,220	269,168	284,734
Due in one to five years, Fair Value	362,423	358,357	320,189
Due in five to ten years, Fair Value	310,196	330,020	366,341
Due after ten years, Fair Value	618,986	561,992	490,229
Available-for-sale securities, at fair value	1,824,240	2,176,290	1,843,824
Asset-backed Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available-for-sale securities, amortized cost	307,754	620,419	343,758
Available-for-sale securities, at fair value	303,563	605,225	332,767
Equity Securities [Member]	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Available-for-sale securities, amortized cost	50,594	50,532	52,437
Available-for-sale securities, at fair value	$54,852	$51,528	$49,564

AvailableForSale_Securities_Na

Available-For-Sale Securities (Narrative) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Billions, unless otherwise specified	securities
Available-for-sale Securities [Abstract]	'	'	'
Pledged Securities, carrying value	$1.10	$1.20	$1.10
Number of securities by a single non-goverment sponsored issuer exceeding 10% of shareholders' equity	0	'	'

Loans_Summary_Of_Loan_Portfoli

Loans (Summary Of Loan Portfolio) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	$13,749,996	$12,896,602	$12,516,892
Covered loans	275,154	346,431	454,602
Total loans	14,025,150	13,243,033	12,971,494
Total loans, net of unearned income, excluding covered loans, percentage	98.00%	97.00%	96.00%
Covered loans, percentage	2.00%	3.00%	4.00%
Total loans, percentage	100.00%	100.00%	100.00%
Commercial Portfolio Segment [Member]	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	3,640,430	3,253,687	3,119,931
Total loans, net of unearned income, excluding covered loans, percentage	26.00%	25.00%	24.00%
Commercial Real Estate Portfolio Segment [Member]	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	4,353,472	4,230,035	4,094,628
Total loans, net of unearned income, excluding covered loans, percentage	31.00%	32.00%	31.00%
Home equity	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	713,642	719,137	758,260
Total loans, net of unearned income, excluding covered loans, percentage	5.00%	5.00%	6.00%
Residential Portfolio Segment [Member]	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	451,905	434,992	384,961
Total loans, net of unearned income, excluding covered loans, percentage	3.00%	3.00%	3.00%
Premium finance receivables | Commercial Insurance Loans [Member]	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	2,378,529	2,167,565	2,165,734
Total loans, net of unearned income, excluding covered loans, percentage	17.00%	16.00%	16.00%
Premium finance receivables | Premium Finance Receivables Life Insurance [Member]	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	2,051,645	1,923,698	1,821,147
Total loans, net of unearned income, excluding covered loans, percentage	15.00%	15.00%	14.00%
Consumer and other	'	'	'
Loans [Line Items]	'	'	'
Loans, net of unearned income, excluding covered loans	$160,373	$167,488	$172,231
Total loans, net of unearned income, excluding covered loans, percentage	1.00%	1.00%	2.00%

Loans_Unpaid_Principal_Balance

Loans (Unpaid Principal Balance And Carrying Value Of Acquired Loans) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Bank acquisitions	'	'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]	'	'
Unpaid Principal Balance	$349,565	$453,944
Carrying Value	265,522	338,517
Life insurance premium finance acquisition	'	'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]	'	'
Unpaid Principal Balance	419,805	437,155
Carrying Value	$409,760	$423,906

Loans_Activity_Related_To_Accr

Loans (Activity Related To Accretable Yield Of Loans Acquired With Evidence Of Credit Quality Deterioration Since Origination) (Detail) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Bank Acquisitions [Member]	'		'		'		'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]	'		'		'		'
Accretable yield, beginning balance	$97,674,000		$121,725,000		$107,655,000		$143,224,000
Acquisitions	0		2,055,000		0		1,977,000
Accretable yield amortized to interest income	-9,617,000		-9,347,000		-17,387,000		-18,924,000
Accretable yield amortized to indemnification asset	-11,161,000	[1]	-11,906,000	[1]	-16,809,000	[1]	-20,612,000	[1]
Reclassification from non-accretable difference	17,928,000	[2]	30,792,000	[2]	26,508,000	[2]	36,204,000	[2]
(Decreases) increases in interest cash flows due to payments and changes in interest rates	-2,722,000		-2,463,000		-7,865,000		-11,013,000
Accretable yield, ending balance	92,102,000	[3]	130,856,000	[3]	92,102,000	[3]	130,856,000	[3]
Certain Loans Acquired In Transfer Not Accounted fo as Debt Securities, Accretable Yield, To Be Amortized To Indem Asset	30,000,000		'		30,000,000		'
Life Insurance Premium Finance Loans [Member]	'		'		'		'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]	'		'		'		'
Accretable yield, beginning balance	6,561,000		11,218,000		8,254,000		13,055,000
Acquisitions	0		0		0		0
Accretable yield amortized to interest income	-1,433,000		-2,254,000		-3,204,000		-4,273,000
Accretable yield amortized to indemnification asset	0	[1]	0	[1]	0	[1]	0	[1]
Reclassification from non-accretable difference	0	[2]	1,007,000	[2]	0	[2]	1,007,000	[2]
(Decreases) increases in interest cash flows due to payments and changes in interest rates	51,000		316,000		129,000		498,000
Accretable yield, ending balance	$5,179,000	[3]	$10,287,000	[3]	$5,179,000	[3]	$10,287,000	[3]
[1]	Represents the portion of the current period accreted yield, resulting from lower expected losses, applied to reduce the loss share indemnification asset.
[2]	Reclassification is the result of subsequent increases in expected principal cash flows.
[3]	As of June 30, 2014, the Company estimates that the remaining accretable yield balance to be amortized to the indemnification asset for the bank acquisitions is $30.0 million. The remainder of the accretable yield related to bank acquisitions is expected to be amortized to interest income.

Loans_Narrative_Detail

Loans (Narrative) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
				Bank Acquisitions [Member]	Bank Acquisitions [Member]	Bank Acquisitions [Member]	Bank Acquisitions [Member]	Premium finance receivables	Premium finance receivables	Premium finance receivables
Schedule Of Accretable Yield Activity Related to Loans Acquired With Evidence Of Credit Quality Deterioration Since Origination Table [Line Items]	'	'	'	'	'	'	'	'	'	'
Loans and Leases Receivable, Deferred Income	'	'	'	'	'	'	'	$44,800,000	$41,900,000	$41,500,000
Deferred Discounts, Finance Charges and Interest Included in Receivables	-1,300,000	-9,200,000	-3,600,000	'	'	'	'	'	'	'
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	'	'	'	$9,617,000	$9,347,000	$17,387,000	$18,924,000	'	'	'

Allowance_for_Loan_Losses_Allo2

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Schedule Of Aging) (Detail) (USD $)	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	$84,034		$103,582		$113,979
90+ days and still accruing	63,914		86,484		115,172
60-89 days past due	34,580		39,698		53,401
30-59 days past due	87,278		84,566		77,581
Current	13,755,344		12,928,703		12,611,361
Loans, net of unearned income, excluding covered loans	13,749,996		12,896,602		12,516,892
Nonaccrual	77,344		94,157		109,997
90+ days and still accruing	29,428		30,202		18,172
60-89 days past due	30,577		33,821		42,833
30-59 days past due	85,796		76,629		72,729
Current	13,526,851		12,661,793		12,273,161
Covered loans, Nonaccrual	6,690		9,425		3,982
Covered loans, 90 plus days and still accruing	34,486		56,282		97,000
Covered loans, 60-89 days past due	4,003		5,877		10,568
Covered loans, 30-59 days past due	1,482		7,937		4,852
Covered loans, Current	228,493		266,910		338,200
Covered loans	275,154		346,431		454,602
Total loans	14,025,150		13,243,033		12,971,494
Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	6,511		10,780		17,248
90+ days and still accruing	1,452		274		290
60-89 days past due	4,165		5,882		5,245
30-59 days past due	30,146		11,755		19,142
Current	3,598,156		3,224,996		3,078,006
Loans, net of unearned income, excluding covered loans	3,640,430		3,253,687		3,119,931
Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	36,321		46,658		54,825
90+ days and still accruing	15,991		18,812		9,729
60-89 days past due	9,629		15,394		18,561
30-59 days past due	30,293		29,870		33,700
Current	4,261,238		4,119,301		3,977,813
Loans, net of unearned income, excluding covered loans	4,353,472		4,230,035		4,094,628
Home equity	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	5,804		10,071		12,322
90+ days and still accruing	0		0		25
60-89 days past due	1,392		1,344		2,085
30-59 days past due	3,324		3,060		5,821
Current	703,122		704,662		738,007
Loans, net of unearned income, excluding covered loans	713,642		719,137		758,260
Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	451,905		434,992		384,961
Consumer and other	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	160,373		167,488		172,231
Commercial and industrial | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	6,216		10,143		15,432
90+ days and still accruing	0		0		0
60-89 days past due	4,165		4,938		2,940
30-59 days past due	21,610		7,404		12,111
Current	1,980,489		1,813,721		1,665,753
Loans, net of unearned income, excluding covered loans	2,012,480		1,836,206		1,696,236
Franchise [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		400		0
30-59 days past due	549		0		450
Current	222,907		219,983		201,790
Loans, net of unearned income, excluding covered loans	223,456		220,383		202,240
Mortgage Warehouse Line of Credit [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	1,680		0		0
Current	146,531		67,470		174,422
Loans, net of unearned income, excluding covered loans	148,211		67,470		174,422
Community Advanatage Homeowners Association [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	0		0		0
Current	94,009		90,894		83,003
Loans, net of unearned income, excluding covered loans	94,009		90,894		83,003
Aircraft Loan [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	0		0		0
Current	7,847		10,241		13,174
Loans, net of unearned income, excluding covered loans	7,847		10,241		13,174
Asset Based Lending [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	295		637		1,816
90+ days and still accruing	0		0		100
60-89 days past due	0		388		2,305
30-59 days past due	6,047		1,878		4,949
Current	772,002		732,190		676,531
Loans, net of unearned income, excluding covered loans	778,344		735,093		685,701
Tax Exempt [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	0		0		0
Current	208,913		161,239		151,492
Loans, net of unearned income, excluding covered loans	208,913		161,239		151,492
Leases [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	36		788		0
Current	144,399		109,043		102,409
Loans, net of unearned income, excluding covered loans	144,435		109,831		102,409
Other Receivables [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		0
90+ days and still accruing	0		0		0
60-89 days past due	0		0		0
30-59 days past due	0		0		0
Current	9,792		11,147		98
Loans, net of unearned income, excluding covered loans	9,792		11,147		98
Purchased Non Covered Commercial [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0	[1]	0	[1]	0	[1]
90+ days and still accruing	1,452	[1]	274	[1]	190	[1]
60-89 days past due	0	[1]	156	[1]	0	[1]
30-59 days past due	224	[1]	1,685	[1]	1,632	[1]
Current	11,267	[1]	9,068	[1]	9,334	[1]
Loans, net of unearned income, excluding covered loans	12,943	[1],[2]	11,183	[1],[2]	11,156	[1],[2]
Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		149		2,659
90+ days and still accruing	0		0		3,263
60-89 days past due	0		0		379
30-59 days past due	18		0		0
Current	29,941		38,351		32,998
Loans, net of unearned income, excluding covered loans	29,959		38,500		39,299
Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	839		6,969		7,857
90+ days and still accruing	0		0		0
60-89 days past due	0		0		1,271
30-59 days past due	0		505		70
Current	154,220		129,232		128,845
Loans, net of unearned income, excluding covered loans	155,059		136,706		138,043
Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	2,367		2,814		5,742
90+ days and still accruing	0		0		0
60-89 days past due	614		4,224		330
30-59 days past due	4,502		619		4,141
Current	98,444		99,128		106,640
Loans, net of unearned income, excluding covered loans	105,927		106,785		116,853
Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	10,950		10,087		6,324
90+ days and still accruing	0		0		0
60-89 days past due	999		2,265		4,210
30-59 days past due	3,911		3,862		2,720
Current	652,057		626,027		584,503
Loans, net of unearned income, excluding covered loans	667,917		642,241		597,757
Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	5,097		5,654		5,773
90+ days and still accruing	0		0		0
60-89 days past due	899		585		4,597
30-59 days past due	690		914		4,984
Current	610,954		626,785		600,147
Loans, net of unearned income, excluding covered loans	617,640		633,938		615,501
Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	6,909		10,862		7,471
90+ days and still accruing	0		0		0
60-89 days past due	1,334		837		1,760
30-59 days past due	2,560		2,435		2,031
Current	686,292		642,125		596,129
Loans, net of unearned income, excluding covered loans	697,095		656,259		607,391
Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	689		2,035		3,337
90+ days and still accruing	0		0		0
60-89 days past due	244		0		401
30-59 days past due	4,717		348		3,149
Current	630,519		564,154		526,681
Loans, net of unearned income, excluding covered loans	636,169		566,537		533,568
Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	9,470		8,088		15,662
90+ days and still accruing	309		230		0
60-89 days past due	5,384		3,943		2,183
30-59 days past due	12,300		15,949		10,379
Current	1,350,976		1,344,244		1,350,581
Loans, net of unearned income, excluding covered loans	1,378,439		1,372,454		1,378,805
Purchased Non Covered Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0	[1]	0	[1]	0	[1]
90+ days and still accruing	15,682	[1]	18,582	[1]	6,466	[1]
60-89 days past due	155	[1]	3,540	[1]	3,430	[1]
30-59 days past due	1,595	[1]	5,238	[1]	6,226	[1]
Current	47,835	[1]	49,255	[1]	51,289	[1]
Loans, net of unearned income, excluding covered loans	65,267	[1],[2]	76,615	[1],[2]	67,411	[1],[2]
Residential Real Estate Loan [Member] | Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	15,294		14,974		10,213
90+ days and still accruing	0		0		0
60-89 days past due	1,487		1,689		1,896
30-59 days past due	1,978		5,032		1,836
Current	430,364		410,430		368,696
Loans, net of unearned income, excluding covered loans	449,123		432,125		382,641
Purchased Non Covered Residential Real Estate [Member] | Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0	[1]	0	[1]	0	[1]
90+ days and still accruing	988	[1]	1,988	[1]	0	[1]
60-89 days past due	111	[1]	0	[1]	46	[1]
30-59 days past due	0	[1]	0	[1]	260	[1]
Current	1,683	[1]	879	[1]	2,014	[1]
Loans, net of unearned income, excluding covered loans	2,782	[1],[2]	2,867	[1],[2]	2,320	[1],[2]
Commercial Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	12,298		10,537		13,605
90+ days and still accruing	10,275		8,842		6,671
60-89 days past due	12,335		6,912		6,592
30-59 days past due	14,672		24,094		11,386
Current	2,328,949		2,117,180		2,127,480
Loans, net of unearned income, excluding covered loans	2,378,529		2,167,565		2,165,734
Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0		0		16
90+ days and still accruing	649		0		1,212
60-89 days past due	896		2,524		7,896
30-59 days past due	4,783		1,808		0
Current	1,635,557		1,495,460		1,337,573
Loans, net of unearned income, excluding covered loans	1,641,885		1,499,792		1,346,697
Purchased Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0	[1]	0	[1]	0	[1]
90+ days and still accruing	0	[1]	0	[1]	0	[1]
60-89 days past due	0	[1]	0	[1]	0	[1]
30-59 days past due	0	[1]	0	[1]	0	[1]
Current	409,760	[1]	423,906	[1]	474,450	[1]
Loans, net of unearned income, excluding covered loans	409,760	[1],[2]	423,906	[1],[2]	474,450	[1],[2]
Consumer and other | Consumer and other	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	1,116		1,137		1,768
90+ days and still accruing	73		105		217
60-89 days past due	558		76		512
30-59 days past due	600		1,010		584
Current	157,828		163,956		168,812
Loans, net of unearned income, excluding covered loans	160,175		166,284		171,893
Purchased Non Covered Consumer And Other [Member] | Consumer and other	'		'		'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'		'		'
Nonaccrual	0	[1]	0	[1]	0	[1]
90+ days and still accruing	0	[1]	181	[1]	28	[1]
60-89 days past due	4	[1]	0	[1]	0	[1]
30-59 days past due	0	[1]	0	[1]	0	[1]
Current	194	[1]	1,023	[1]	310	[1]
Loans, net of unearned income, excluding covered loans	$198	[1],[2]	$1,204	[1],[2]	$338	[1],[2]
[1]	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.
[2]	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.As of June 30, 2013 90+ days and still accruingB 60-89 days past dueB 30-59 days past due (Dollars in thousands)Nonaccrual CurrentB Total LoansLoan Balances: Commercial Commercial and industrial$15,432B $bB $2,940B $12,111B $1,665,753B $1,696,236FranchisebB bB bB 450B 201,790B 202,240Mortgage warehouse lines of creditbB bB bB bB 174,422B 174,422Community Advantagebhomeowners associationbB bB bB bB 83,003B 83,003AircraftbB bB bB bB 13,174B 13,174Asset-based lending1,816B 100B 2,305B 4,949B 676,531B 685,701Tax exempt bB bB bB bB 151,492B 151,492LeasesbB bB bB bB 102,409B 102,409OtherbB bB bB bB 98B 98PCI - commercial (1)bB 190B bB 1,632B 9,334B 11,156Total commercial17,248B 290B 5,245B 19,142B 3,078,006B 3,119,931Commercial real-estate: Residential construction2,659B 3,263B 379B bB 32,998B 39,299Commercial construction7,857B bB 1,271B 70B 128,845B 138,043Land5,742B bB 330B 4,141B 106,640B 116,853Office6,324B bB 4,210B 2,720B 584,503B 597,757Industrial5,773B bB 4,597B 4,984B 600,147B 615,501Retail7,471B bB 1,760B 2,031B 596,129B 607,391Multi-family3,337B bB 401B 3,149B 526,681B 533,568Mixed use and other15,662B bB 2,183B 10,379B 1,350,581B 1,378,805PCI - commercial real-estate (1)bB 6,466B 3,430B 6,226B 51,289B 67,411Total commercial real-estate54,825B 9,729B 18,561B 33,700B 3,977,813B 4,094,628Home equity12,322B 25B 2,085B 5,821B 738,007B 758,260Residential real estate10,213B bB 1,896B 1,836B 368,696B 382,641PCI - residential real estate (1)bB bB 46B 260B 2,014B 2,320Premium finance receivables Commercial insurance loans13,605B 6,671B 6,592B 11,386B 2,127,480B 2,165,734Life insurance loans16B 1,212B 7,896B bB 1,337,573B 1,346,697PCI - life insurance loans (1)bB bB bB bB 474,450B 474,450Consumer and other1,768B 217B 512B 584B 168,812B 171,893PCI - consumer and other (1)bB 28B bB bB 310B 338Total loans, net of unearned income, excluding covered loans$109,997B $18,172B $42,833B $72,729B $12,273,161B $12,516,892Covered loans3,982B 97,000B 10,568B 4,852B 338,200B 454,602Total loans, net of unearned income$113,979B $115,172B $53,401B $77,581B $12,611,361B $12,971,494(1)PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.Our ability to manage credit risk depends in large part on our ability to properly identify and manage problem loans. To do so, we operate a credit risk rating system under which our credit management personnel assign a credit risk rating (1 to 10 rating) to each loan at the time of origination and review loans on a regular basis.Each loan officer is responsible for monitoring his or her loan portfolio, recommending a credit risk rating for each loan in his or her portfolio and ensuring the credit risk ratings are appropriate. These credit risk ratings are then ratified by the bankbs chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors including: a borrowerbs financial strength, cash flow coverage, collateral protection and guarantees.The Companybs Problem Loan Reporting system automatically includes all loans with credit risk ratings of 6 through 9. This system is designed to provide an on-going detailed tracking mechanism for each problem loan. Once management determines that a loan has deteriorated to a point where it has a credit risk rating of 6 or worse, the Companybs Managed Asset Division performs an overall credit and collateral review. As part of this review, all underlying collateral is identified and the valuation methodology is analyzed and tracked. As a result of this initial review by the Companybs Managed Asset Division, the credit risk rating is reviewed and a portion of the outstanding loan balance may be deemed uncollectible or an impairment reserve may be established. The Companybs impairment analysis utilizes an independent re-appraisal of the collateral (unless such a third-party evaluation is not possible due to the unique nature of the collateral, such as a closely-held business or thinly traded securities). In the case of commercial real-estate collateral, an independent third party appraisal is ordered by the Companybs Real Estate Services Group to determine if there has been any change in the underlying collateral value. These independent appraisals are reviewed by the Real Estate Services Group and sometimes by independent third party valuation experts and may be adjusted depending upon market conditions.Through the credit risk rating process, loans are reviewed to determine if they are performing in accordance with the original contractual terms. If the borrower has failed to comply with the original contractual terms, further action may be required by the Company, including a downgrade in the credit risk rating, movement to non-accrual status, a charge-off or the establishment of a specific impairment reserve. If we determine that a loan amount, or portion thereof, is uncollectible, the loanbs credit risk rating is immediately downgraded to an 8 or 9 and the uncollectible amount is charged-off. Any loan that has a partial charge-off continues to be assigned a credit risk rating of an 8 or 9 for the duration of time that a balance remains outstanding. The Company undertakes a thorough and ongoing analysis to determine if additional impairment and/or charge-offs are appropriate and to begin a workout plan for the credit to minimize actual losses.If, based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a specific impairment reserve is established. In determining the appropriate charge-off for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral.Non-performing loans include all non-accrual loans (8 and 9 risk ratings) as well as loans 90 days past due and still accruing interest, excluding PCI loans. The remainder of the portfolio is considered performing under the contractual terms of the loan agreement. The following table presents the recorded investment based on performance of loans by class, excluding covered loans, per the most recent analysis at JuneB 30, 2014,B DecemberB 31, 2013 and JuneB 30, 2013: PerformingB Non-performingB Total(DollarsB inB thousands)June 30, 2014B December 31, 2013B June 30, 2013B June 30, 2014B December 31, 2013B June 30, 2013B June 30, 2014B December 31, 2013B June 30, 2013Loan Balances: Commercial Commercial and industrial$2,006,264B $1,826,063B $1,680,804B $6,216B $10,143B $15,432B $2,012,480B $1,836,206B $1,696,236Franchise223,456B 220,383B 202,240B bB bB bB 223,456B 220,383B 202,240Mortgage warehouse lines of credit148,211B 67,470B 174,422B bB bB bB 148,211B 67,470B 174,422Community Advantagebhomeowners association94,009B 90,894B 83,003B bB bB bB 94,009B 90,894B 83,003Aircraft7,847B 10,241B 13,174B bB bB bB 7,847B 10,241B 13,174Asset-based lending778,049B 734,456B 683,785B 295B 637B 1,916B 778,344B 735,093B 685,701Tax exempt208,913B 161,239B 151,492B bB bB bB 208,913B 161,239B 151,492Leases144,435B 109,831B 102,409B bB bB bB 144,435B 109,831B 102,409Other9,792B 11,147B 98B bB bB bB 9,792B 11,147B 98PCI - commercial (1)12,943B 11,183B 11,156B bB bB bB 12,943B 11,183B 11,156Total commercial3,633,919B 3,242,907B 3,102,583B 6,511B 10,780B 17,348B 3,640,430B 3,253,687B 3,119,931Commercial real-estate Residential construction29,959B 38,351B 33,377B bB 149B 5,922B 29,959B 38,500B 39,299Commercial construction154,220B 129,737B 130,186B 839B 6,969B 7,857B 155,059B 136,706B 138,043Land103,560B 103,971B 111,111B 2,367B 2,814B 5,742B 105,927B 106,785B 116,853Office656,967B 632,154B 591,433B 10,950B 10,087B 6,324B 667,917B 642,241B 597,757Industrial612,543B 628,284B 609,728B 5,097B 5,654B 5,773B 617,640B 633,938B 615,501Retail690,186B 645,397B 599,920B 6,909B 10,862B 7,471B 697,095B 656,259B 607,391Multi-family635,480B 564,502B 530,231B 689B 2,035B 3,337B 636,169B 566,537B 533,568Mixed use and other1,368,660B 1,364,136B 1,363,143B 9,779B 8,318B 15,662B 1,378,439B 1,372,454B 1,378,805PCI - commercial real-estate(1)65,267B 76,615B 67,411B bB bB bB 65,267B 76,615B 67,411Total commercial real-estate4,316,842B 4,183,147B 4,036,540B 36,630B 46,888B 58,088B 4,353,472B 4,230,035B 4,094,628Home equity707,838B 709,066B 745,913B 5,804B 10,071B 12,347B 713,642B 719,137B 758,260Residential real-estate433,829B 417,151B 372,428B 15,294B 14,974B 10,213B 449,123B 432,125B 382,641PCI - residential real-estate (1)2,782B 2,867B 2,320B bB bB bB 2,782B 2,867B 2,320Premium finance receivables Commercial insurance loans2,355,956B 2,148,186B 2,145,458B 22,573B 19,379B 20,276B 2,378,529B 2,167,565B 2,165,734Life insurance loans1,641,236B 1,499,792B 1,345,469B 649B bB 1,228B 1,641,885B 1,499,792B 1,346,697PCI - life insurance loans (1)409,760B 423,906B 474,450B bB bB bB 409,760B 423,906B 474,450Consumer and other158,986B 165,042B 169,908B 1,189B 1,242B 1,985B 160,175B 166,284B 171,893PCI - consumer and other(1)198B 1,204B 338B bB bB bB 198B 1,204B 338Total loans, net of unearned income, excluding covered loans$13,661,346B $12,793,268B $12,395,407B $88,650B $103,334B $121,485B $13,749,996B $12,896,602B $12,516,892(1)PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. See Note 6 - Loans for further discussion of these purchased loans.

Allowance_for_Loan_Losses_Allo3

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Performing NonPerforming) (Detail) (USD $)	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	$13,749,996		$12,896,602		$12,516,892
Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	13,661,346		12,793,268		12,395,407
Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	88,650		103,334		121,485
Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	3,640,430		3,253,687		3,119,931
Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	3,633,919		3,242,907		3,102,583
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	6,511		10,780		17,348
Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	4,353,472		4,230,035		4,094,628
Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	4,316,842		4,183,147		4,036,540
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	36,630		46,888		58,088
Home equity	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	713,642		719,137		758,260
Home equity | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	707,838		709,066		745,913
Home equity | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	5,804		10,071		12,347
Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	451,905		434,992		384,961
Consumer and other	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	160,373		167,488		172,231
Commercial and industrial | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,012,480		1,836,206		1,696,236
Commercial and industrial | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,006,264		1,826,063		1,680,804
Commercial and industrial | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	6,216		10,143		15,432
Franchise [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	223,456		220,383		202,240
Franchise [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	223,456		220,383		202,240
Franchise [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Mortgage Warehouse Line of Credit [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	148,211		67,470		174,422
Mortgage Warehouse Line of Credit [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	148,211		67,470		174,422
Mortgage Warehouse Line of Credit [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Community Advanatage Homeowners Association [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	94,009		90,894		83,003
Community Advanatage Homeowners Association [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	94,009		90,894		83,003
Community Advanatage Homeowners Association [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Aircraft Loan [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	7,847		10,241		13,174
Aircraft Loan [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	7,847		10,241		13,174
Aircraft Loan [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Asset Based Lending [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	778,344		735,093		685,701
Asset Based Lending [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	778,049		734,456		683,785
Asset Based Lending [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	295		637		1,916
Tax Exempt [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	208,913		161,239		151,492
Tax Exempt [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	208,913		161,239		151,492
Tax Exempt [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Leases [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	144,435		109,831		102,409
Leases [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	144,435		109,831		102,409
Leases [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Other Receivables [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	9,792		11,147		98
Other Receivables [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	9,792		11,147		98
Other Receivables [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		0		0
Purchased Non Covered Commercial [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	12,943	[1],[2]	11,183	[1],[2]	11,156	[1],[2]
Purchased Non Covered Commercial [Member] | Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	12,943	[1]	11,183	[1]	11,156	[1]
Purchased Non Covered Commercial [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0	[1]	0	[1]	0	[1]
Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	29,959		38,500		39,299
Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	29,959		38,351		33,377
Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0		149		5,922
Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	155,059		136,706		138,043
Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	154,220		129,737		130,186
Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	839		6,969		7,857
Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	105,927		106,785		116,853
Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	103,560		103,971		111,111
Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,367		2,814		5,742
Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	667,917		642,241		597,757
Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	656,967		632,154		591,433
Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	10,950		10,087		6,324
Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	617,640		633,938		615,501
Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	612,543		628,284		609,728
Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	5,097		5,654		5,773
Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	697,095		656,259		607,391
Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	690,186		645,397		599,920
Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	6,909		10,862		7,471
Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	636,169		566,537		533,568
Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	635,480		564,502		530,231
Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	689		2,035		3,337
Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	1,378,439		1,372,454		1,378,805
Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	1,368,660		1,364,136		1,363,143
Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	9,779		8,318		15,662
Purchased Non Covered Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	65,267	[1],[2]	76,615	[1],[2]	67,411	[1],[2]
Purchased Non Covered Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	65,267	[1]	76,615	[1]	67,411	[1]
Purchased Non Covered Commercial Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0	[1]	0	[1]	0	[1]
Residential Real Estate Loan [Member] | Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	449,123		432,125		382,641
Residential Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	433,829		417,151		372,428
Residential Real Estate Loan [Member] | Residential Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	15,294		14,974		10,213
Purchased Non Covered Residential Real Estate [Member] | Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,782	[1],[2]	2,867	[1],[2]	2,320	[1],[2]
Purchased Non Covered Residential Real Estate [Member] | Residential Portfolio Segment [Member] | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,782	[1]	2,867	[1]	2,320	[1]
Purchased Non Covered Residential Real Estate [Member] | Residential Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0	[1]	0	[1]	0	[1]
Commercial Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,378,529		2,167,565		2,165,734
Commercial Insurance Loans [Member] | Premium finance receivables | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	2,355,956		2,148,186		2,145,458
Commercial Insurance Loans [Member] | Premium finance receivables | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	22,573		19,379		20,276
Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	1,641,885		1,499,792		1,346,697
Life Insurance Loans [Member] | Premium finance receivables | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	1,641,236		1,499,792		1,345,469
Life Insurance Loans [Member] | Premium finance receivables | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	649		0		1,228
Purchased Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	409,760	[1],[2]	423,906	[1],[2]	474,450	[1],[2]
Purchased Life Insurance Loans [Member] | Premium finance receivables | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	409,760	[1]	423,906	[1]	474,450	[1]
Purchased Life Insurance Loans [Member] | Premium finance receivables | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	0	[1]	0	[1]	0	[1]
Consumer and other | Consumer and other	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	160,175		166,284		171,893
Consumer and other | Consumer and other | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	158,986		165,042		169,908
Consumer and other | Consumer and other | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	1,189		1,242		1,985
Purchased Non Covered Consumer And Other [Member] | Consumer and other	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	198	[1],[2]	1,204	[1],[2]	338	[1],[2]
Purchased Non Covered Consumer And Other [Member] | Consumer and other | Performing Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	198	[1]	1,204	[1]	338	[1]
Purchased Non Covered Consumer And Other [Member] | Consumer and other | Nonperforming Financing Receivable [Member]	'		'		'
Financing Receivable, Recorded Investment [Line Items]	'		'		'
Loans, net of unearned income, excluding covered loans	$0	[1]	$0	[1]	$0	[1]
[1]	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.As of June 30, 2013 90+ days and still accruingB 60-89 days past dueB 30-59 days past due (Dollars in thousands)Nonaccrual CurrentB Total LoansLoan Balances: Commercial Commercial and industrial$15,432B $bB $2,940B $12,111B $1,665,753B $1,696,236FranchisebB bB bB 450B 201,790B 202,240Mortgage warehouse lines of creditbB bB bB bB 174,422B 174,422Community Advantagebhomeowners associationbB bB bB bB 83,003B 83,003AircraftbB bB bB bB 13,174B 13,174Asset-based lending1,816B 100B 2,305B 4,949B 676,531B 685,701Tax exempt bB bB bB bB 151,492B 151,492LeasesbB bB bB bB 102,409B 102,409OtherbB bB bB bB 98B 98PCI - commercial (1)bB 190B bB 1,632B 9,334B 11,156Total commercial17,248B 290B 5,245B 19,142B 3,078,006B 3,119,931Commercial real-estate: Residential construction2,659B 3,263B 379B bB 32,998B 39,299Commercial construction7,857B bB 1,271B 70B 128,845B 138,043Land5,742B bB 330B 4,141B 106,640B 116,853Office6,324B bB 4,210B 2,720B 584,503B 597,757Industrial5,773B bB 4,597B 4,984B 600,147B 615,501Retail7,471B bB 1,760B 2,031B 596,129B 607,391Multi-family3,337B bB 401B 3,149B 526,681B 533,568Mixed use and other15,662B bB 2,183B 10,379B 1,350,581B 1,378,805PCI - commercial real-estate (1)bB 6,466B 3,430B 6,226B 51,289B 67,411Total commercial real-estate54,825B 9,729B 18,561B 33,700B 3,977,813B 4,094,628Home equity12,322B 25B 2,085B 5,821B 738,007B 758,260Residential real estate10,213B bB 1,896B 1,836B 368,696B 382,641PCI - residential real estate (1)bB bB 46B 260B 2,014B 2,320Premium finance receivables Commercial insurance loans13,605B 6,671B 6,592B 11,386B 2,127,480B 2,165,734Life insurance loans16B 1,212B 7,896B bB 1,337,573B 1,346,697PCI - life insurance loans (1)bB bB bB bB 474,450B 474,450Consumer and other1,768B 217B 512B 584B 168,812B 171,893PCI - consumer and other (1)bB 28B bB bB 310B 338Total loans, net of unearned income, excluding covered loans$109,997B $18,172B $42,833B $72,729B $12,273,161B $12,516,892Covered loans3,982B 97,000B 10,568B 4,852B 338,200B 454,602Total loans, net of unearned income$113,979B $115,172B $53,401B $77,581B $12,611,361B $12,971,494(1)PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.Our ability to manage credit risk depends in large part on our ability to properly identify and manage problem loans. To do so, we operate a credit risk rating system under which our credit management personnel assign a credit risk rating (1 to 10 rating) to each loan at the time of origination and review loans on a regular basis.Each loan officer is responsible for monitoring his or her loan portfolio, recommending a credit risk rating for each loan in his or her portfolio and ensuring the credit risk ratings are appropriate. These credit risk ratings are then ratified by the bankbs chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors including: a borrowerbs financial strength, cash flow coverage, collateral protection and guarantees.The Companybs Problem Loan Reporting system automatically includes all loans with credit risk ratings of 6 through 9. This system is designed to provide an on-going detailed tracking mechanism for each problem loan. Once management determines that a loan has deteriorated to a point where it has a credit risk rating of 6 or worse, the Companybs Managed Asset Division performs an overall credit and collateral review. As part of this review, all underlying collateral is identified and the valuation methodology is analyzed and tracked. As a result of this initial review by the Companybs Managed Asset Division, the credit risk rating is reviewed and a portion of the outstanding loan balance may be deemed uncollectible or an impairment reserve may be established. The Companybs impairment analysis utilizes an independent re-appraisal of the collateral (unless such a third-party evaluation is not possible due to the unique nature of the collateral, such as a closely-held business or thinly traded securities). In the case of commercial real-estate collateral, an independent third party appraisal is ordered by the Companybs Real Estate Services Group to determine if there has been any change in the underlying collateral value. These independent appraisals are reviewed by the Real Estate Services Group and sometimes by independent third party valuation experts and may be adjusted depending upon market conditions.Through the credit risk rating process, loans are reviewed to determine if they are performing in accordance with the original contractual terms. If the borrower has failed to comply with the original contractual terms, further action may be required by the Company, including a downgrade in the credit risk rating, movement to non-accrual status, a charge-off or the establishment of a specific impairment reserve. If we determine that a loan amount, or portion thereof, is uncollectible, the loanbs credit risk rating is immediately downgraded to an 8 or 9 and the uncollectible amount is charged-off. Any loan that has a partial charge-off continues to be assigned a credit risk rating of an 8 or 9 for the duration of time that a balance remains outstanding. The Company undertakes a thorough and ongoing analysis to determine if additional impairment and/or charge-offs are appropriate and to begin a workout plan for the credit to minimize actual losses.If, based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a specific impairment reserve is established. In determining the appropriate charge-off for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral.Non-performing loans include all non-accrual loans (8 and 9 risk ratings) as well as loans 90 days past due and still accruing interest, excluding PCI loans. The remainder of the portfolio is considered performing under the contractual terms of the loan agreement. The following table presents the recorded investment based on performance of loans by class, excluding covered loans, per the most recent analysis at JuneB 30, 2014,B DecemberB 31, 2013 and JuneB 30, 2013: PerformingB Non-performingB Total(DollarsB inB thousands)June 30, 2014B December 31, 2013B June 30, 2013B June 30, 2014B December 31, 2013B June 30, 2013B June 30, 2014B December 31, 2013B June 30, 2013Loan Balances: Commercial Commercial and industrial$2,006,264B $1,826,063B $1,680,804B $6,216B $10,143B $15,432B $2,012,480B $1,836,206B $1,696,236Franchise223,456B 220,383B 202,240B bB bB bB 223,456B 220,383B 202,240Mortgage warehouse lines of credit148,211B 67,470B 174,422B bB bB bB 148,211B 67,470B 174,422Community Advantagebhomeowners association94,009B 90,894B 83,003B bB bB bB 94,009B 90,894B 83,003Aircraft7,847B 10,241B 13,174B bB bB bB 7,847B 10,241B 13,174Asset-based lending778,049B 734,456B 683,785B 295B 637B 1,916B 778,344B 735,093B 685,701Tax exempt208,913B 161,239B 151,492B bB bB bB 208,913B 161,239B 151,492Leases144,435B 109,831B 102,409B bB bB bB 144,435B 109,831B 102,409Other9,792B 11,147B 98B bB bB bB 9,792B 11,147B 98PCI - commercial (1)12,943B 11,183B 11,156B bB bB bB 12,943B 11,183B 11,156Total commercial3,633,919B 3,242,907B 3,102,583B 6,511B 10,780B 17,348B 3,640,430B 3,253,687B 3,119,931Commercial real-estate Residential construction29,959B 38,351B 33,377B bB 149B 5,922B 29,959B 38,500B 39,299Commercial construction154,220B 129,737B 130,186B 839B 6,969B 7,857B 155,059B 136,706B 138,043Land103,560B 103,971B 111,111B 2,367B 2,814B 5,742B 105,927B 106,785B 116,853Office656,967B 632,154B 591,433B 10,950B 10,087B 6,324B 667,917B 642,241B 597,757Industrial612,543B 628,284B 609,728B 5,097B 5,654B 5,773B 617,640B 633,938B 615,501Retail690,186B 645,397B 599,920B 6,909B 10,862B 7,471B 697,095B 656,259B 607,391Multi-family635,480B 564,502B 530,231B 689B 2,035B 3,337B 636,169B 566,537B 533,568Mixed use and other1,368,660B 1,364,136B 1,363,143B 9,779B 8,318B 15,662B 1,378,439B 1,372,454B 1,378,805PCI - commercial real-estate(1)65,267B 76,615B 67,411B bB bB bB 65,267B 76,615B 67,411Total commercial real-estate4,316,842B 4,183,147B 4,036,540B 36,630B 46,888B 58,088B 4,353,472B 4,230,035B 4,094,628Home equity707,838B 709,066B 745,913B 5,804B 10,071B 12,347B 713,642B 719,137B 758,260Residential real-estate433,829B 417,151B 372,428B 15,294B 14,974B 10,213B 449,123B 432,125B 382,641PCI - residential real-estate (1)2,782B 2,867B 2,320B bB bB bB 2,782B 2,867B 2,320Premium finance receivables Commercial insurance loans2,355,956B 2,148,186B 2,145,458B 22,573B 19,379B 20,276B 2,378,529B 2,167,565B 2,165,734Life insurance loans1,641,236B 1,499,792B 1,345,469B 649B bB 1,228B 1,641,885B 1,499,792B 1,346,697PCI - life insurance loans (1)409,760B 423,906B 474,450B bB bB bB 409,760B 423,906B 474,450Consumer and other158,986B 165,042B 169,908B 1,189B 1,242B 1,985B 160,175B 166,284B 171,893PCI - consumer and other(1)198B 1,204B 338B bB bB bB 198B 1,204B 338Total loans, net of unearned income, excluding covered loans$13,661,346B $12,793,268B $12,395,407B $88,650B $103,334B $121,485B $13,749,996B $12,896,602B $12,516,892(1)PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. See Note 6 - Loans for further discussion of these purchased loans.
[2]	PCI loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.

Allowance_for_Loan_Losses_Allo4

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Activity In Allowance For Credit Losses) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	$92,275	$110,348	$96,922	$107,351
Other adjustments	-105	-309	-253	-538
Reclassification from (to) allowance for unfunded lending-related commitments	-146	65	-164	-148
Charge-offs	-7,859	-19,776	-16,876	-32,937
Recoveries	1,275	1,381	2,507	2,614
Provision for credit losses	6,813	15,133	10,117	30,500
Allowance for loan losses at period end	92,253	106,842	92,253	106,842
Allowance for unfunded lending-related commitments at period end	884	3,563	884	3,563
Allowance for credit losses at period end	93,137	110,405	93,137	110,405
Allowance for credit losses at period end, Individually evaluated for impairment	10,386	14,882	10,386	14,882
Allowance for credit losses at period end, Collectively evaluated for impairment	82,687	95,321	82,687	95,321
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	64	202	64	202
Loans at period end, Individually evaluated for impairment	138,735	194,370	138,735	194,370
Loans at period end, Collectively evaluated for impairment	13,120,311	11,766,847	13,120,311	11,766,847
Loans at period end, Loans acquired with deteriorated credit quality	490,950	555,675	490,950	555,675
Commercial Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	24,689	28,952	23,092	28,794
Other adjustments	-22	-1	-37	-4
Reclassification from (to) allowance for unfunded lending-related commitments	0	0	0	0
Charge-offs	-2,384	-1,093	-3,032	-5,633
Recoveries	270	268	587	563
Provision for credit losses	3,485	605	5,428	5,011
Allowance for loan losses at period end	26,038	28,731	26,038	28,731
Allowance for unfunded lending-related commitments at period end	0	0	0	0
Allowance for credit losses at period end	26,038	28,731	26,038	28,731
Allowance for credit losses at period end, Individually evaluated for impairment	1,927	5,587	1,927	5,587
Allowance for credit losses at period end, Collectively evaluated for impairment	24,100	23,066	24,100	23,066
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	11	78	11	78
Loans at period end, Individually evaluated for impairment	12,397	25,495	12,397	25,495
Loans at period end, Collectively evaluated for impairment	3,615,090	3,083,280	3,615,090	3,083,280
Loans at period end, Loans acquired with deteriorated credit quality	12,943	11,156	12,943	11,156
Commercial Real Estate Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	44,605	56,408	48,658	52,135
Other adjustments	-96	-211	-217	-428
Reclassification from (to) allowance for unfunded lending-related commitments	-146	65	-164	-148
Charge-offs	-2,351	-14,947	-6,844	-18,246
Recoveries	342	584	487	952
Provision for credit losses	-1,652	10,057	-1,218	17,691
Allowance for loan losses at period end	40,702	51,956	40,702	51,956
Allowance for unfunded lending-related commitments at period end	884	3,563	884	3,563
Allowance for credit losses at period end	41,586	55,519	41,586	55,519
Allowance for credit losses at period end, Individually evaluated for impairment	7,237	7,411	7,237	7,411
Allowance for credit losses at period end, Collectively evaluated for impairment	34,349	47,994	34,349	47,994
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	0	114	0	114
Loans at period end, Individually evaluated for impairment	100,068	139,920	100,068	139,920
Loans at period end, Collectively evaluated for impairment	4,188,137	3,887,297	4,188,137	3,887,297
Loans at period end, Loans acquired with deteriorated credit quality	65,267	67,411	65,267	67,411
Home equity	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	10,966	12,122	12,611	12,734
Other adjustments	-1	0	-2	0
Reclassification from (to) allowance for unfunded lending-related commitments	0	0	0	0
Charge-offs	-730	-1,785	-2,997	-4,182
Recoveries	122	171	379	333
Provision for credit losses	3,561	3,697	3,927	5,320
Allowance for loan losses at period end	13,918	14,205	13,918	14,205
Allowance for unfunded lending-related commitments at period end	0	0	0	0
Allowance for credit losses at period end	13,918	14,205	13,918	14,205
Allowance for credit losses at period end, Individually evaluated for impairment	636	1,060	636	1,060
Allowance for credit losses at period end, Collectively evaluated for impairment	13,282	13,145	13,282	13,145
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	0	0	0	0
Loans at period end, Individually evaluated for impairment	6,030	13,488	6,030	13,488
Loans at period end, Collectively evaluated for impairment	707,612	744,772	707,612	744,772
Loans at period end, Loans acquired with deteriorated credit quality	0	0	0	0
Residential Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	4,691	5,140	5,108	5,560
Other adjustments	-2	-85	-4	-94
Reclassification from (to) allowance for unfunded lending-related commitments	0	0	0	0
Charge-offs	-689	-517	-915	-2,245
Recoveries	74	18	205	23
Provision for credit losses	-341	269	-661	1,581
Allowance for loan losses at period end	3,733	4,825	3,733	4,825
Allowance for unfunded lending-related commitments at period end	0	0	0	0
Allowance for credit losses at period end	3,733	4,825	3,733	4,825
Allowance for credit losses at period end, Individually evaluated for impairment	484	606	484	606
Allowance for credit losses at period end, Collectively evaluated for impairment	3,196	4,209	3,196	4,209
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	53	10	53	10
Loans at period end, Individually evaluated for impairment	18,680	13,629	18,680	13,629
Loans at period end, Collectively evaluated for impairment	430,443	369,012	430,443	369,012
Loans at period end, Loans acquired with deteriorated credit quality	2,782	2,320	2,782	2,320
Premium finance receivables	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	5,582	6,071	5,583	6,096
Other adjustments	16	-12	7	-12
Reclassification from (to) allowance for unfunded lending-related commitments	0	0	0	0
Charge-offs	-1,492	-1,306	-2,702	-2,374
Recoveries	314	279	635	573
Provision for credit losses	1,889	236	2,786	985
Allowance for loan losses at period end	6,309	5,268	6,309	5,268
Allowance for unfunded lending-related commitments at period end	0	0	0	0
Allowance for credit losses at period end	6,309	5,268	6,309	5,268
Allowance for credit losses at period end, Individually evaluated for impairment	0	0	0	0
Allowance for credit losses at period end, Collectively evaluated for impairment	6,309	5,268	6,309	5,268
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	0	0	0	0
Loans at period end, Individually evaluated for impairment	0	0	0	0
Loans at period end, Collectively evaluated for impairment	4,020,414	3,512,431	4,020,414	3,512,431
Loans at period end, Loans acquired with deteriorated credit quality	409,760	474,450	409,760	474,450
Consumer and other	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Allowance for loan losses at beginning of period	1,742	1,655	1,870	2,032
Other adjustments	0	0	0	0
Reclassification from (to) allowance for unfunded lending-related commitments	0	0	0	0
Charge-offs	-213	-128	-386	-257
Recoveries	153	61	214	170
Provision for credit losses	-129	269	-145	-88
Allowance for loan losses at period end	1,553	1,857	1,553	1,857
Allowance for unfunded lending-related commitments at period end	0	0	0	0
Allowance for credit losses at period end	1,553	1,857	1,553	1,857
Allowance for credit losses at period end, Individually evaluated for impairment	102	218	102	218
Allowance for credit losses at period end, Collectively evaluated for impairment	1,451	1,639	1,451	1,639
Allowance for credit losses at period end, Loans acquired with deteriorated credit quality	0	0	0	0
Loans at period end, Individually evaluated for impairment	1,560	1,838	1,560	1,838
Loans at period end, Collectively evaluated for impairment	158,615	170,055	158,615	170,055
Loans at period end, Loans acquired with deteriorated credit quality	$198	$338	$198	$338

Allowance_for_Loan_Losses_Allo5

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Activity In The Allowance For Covered Loan Losses) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Allowance for Covered Loan Losses [Roll Forward]	'	'	'	'
Balance at beginning of period	$3,447	$12,272	$10,092	$13,454
Provision for covered loan losses before benefit attributable to FDIC loss share agreements	-764	1,246	-7,885	2,846
Benefit attributable to FDIC loss share agreements	611	-997	6,308	-2,277
Net provision for covered loan losses	-153	249	-1,577	569
(Decrease) increase in FDIC indemnification asset	-611	997	-6,308	2,277
Loans charged-off	-2,189	-2,266	-5,053	-5,057
Recoveries of loans charged-off	1,173	3,177	4,513	3,186
Net recoveries (charge-offs)	-1,016	911	-540	-1,871
Balance at end of period	$1,667	$14,429	$1,667	$14,429

Allowance_for_Loan_Losses_Allo6

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Impaired Loans, Including Restructured Loans) (Detail) (USD $)	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired loans with an allowance for loan loss required	$91,511	[1]	$92,184	[1]	$96,519	[1]
Impaired loans with no allowance for loan loss required	45,734		70,045		93,629
Total impaired loans	137,245	[2]	162,229	[2]	190,148	[2]
Allowance for loan losses related to impaired loans	10,298		8,265		11,839
Financing Receivable [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Allowance for loan losses related to impaired loans	4,900		'		'
TDRs	$88,107		$107,103		$126,196
[1]	These impaired loans require an allowance for loan losses because the estimated fair value of the loans or related collateral is less than the recorded investment in the loans.
[2]	Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.

Allowance_for_Loan_Losses_Allo7

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Impaired Loans Eval For Impairment) (Detail) (USD $)	6 Months Ended				12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	$91,511	[1]	$96,519	[1]	$92,184	[1]
Related Allowance	10,298		11,839		8,265
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	45,734		93,629		70,045
Recorded Investment	137,245	[2]	190,148	[2]	162,229	[2]
Unpaid Principal Balance	164,281		223,196		195,455
Average Recorded Investment	142,960		194,249		170,658
Impaired Financing Receivable, Interest Income, Accrual Method	3,790		5,044		8,920
Home equity	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,562		3,454		3,985
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,616		4,857		5,238
Related Allowance	636		1,060		1,593
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,567		4,183		4,855
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	30		87		236
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,468		10,034		6,312
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	6,553		11,734		7,790
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	138		235		324
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,842		10,012		6,307
Residential Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,997		3,155		6,876
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	6,372		3,666		7,023
Related Allowance	457		575		626
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,914		2,905		6,335
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	140		62		273
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	12,422		10,207		10,761
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15,538		10,860		13,585
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	295		211		393
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	12,836		10,632		9,443
Consumer and other	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	304		646		267
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	364		648		269
Related Allowance	102		218		109
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	308		650		273
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8		17		11
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,256		1,192		1,322
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,775		1,736		1,865
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	53		52		115
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,260		1,221		1,355
Commercial and industrial | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,220		11,720		6,297
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	10,152		13,429		7,001
Related Allowance	1,631		4,561		1,078
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	8,332		12,131		6,611
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	339		434		354
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,222		11,028		9,890
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	8,666		14,384		16,333
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	219		393		1,043
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,591		12,155		13,928
Franchise [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Mortgage Warehouse Line of Credit [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Community Advanatage Homeowners Association [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Aircraft Loan [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Asset Based Lending [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	270		1,803		282
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	290		1,810		294
Related Allowance	270		988		282
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	275		1,721		295
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	7		46		14
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	25		12		354
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,952		1,352		2,311
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	50		36		121
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	150		19		2,162
Tax Exempt [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Leases [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Other Receivables [Member] | Commercial Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		1,528		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		1,615		0
Related Allowance	0		403		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		1,547		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		33		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		4,100		1,463
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		4,481		1,530
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		81		64
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		3,782		1,609
Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,146		10,591		3,099
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,156		10,591		3,099
Related Allowance	128		67		18
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,150		10,853		3,098
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	44		207		115
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,031		8,377		7,710
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,031		13,410		13,227
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	23		357		722
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,051		11,508		9,680
Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	11,687		8,713		10,518
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	15,538		8,894		11,871
Related Allowance	363		173		259
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	11,876		7,281		10,323
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	378		117		411
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,917		8,195		5,035
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,958		13,910		8,813
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	131		331		418
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,657		9,791		5,384
Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14,403		9,306		7,792
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	15,159		9,411		8,444
Related Allowance	2,664		685		1,253
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,517		9,385		8,148
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	335		170		333
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,598		7,442		10,379
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,599		9,171		11,717
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	73		237		610
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,605		8,581		10,925
Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,349		4,165		3,385
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,455		5,226		3,506
Related Allowance	227		203		193
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,372		5,047		3,638
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	76		159		179
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,603		5,178		5,087
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,839		5,321		5,267
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	95		141		328
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,155		5,234		5,160
Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14,320		12,730		17,511
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	14,733		12,730		17,638
Related Allowance	1,590		152		1,253
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,343		12,675		17,678
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	304		254		724
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,422		16,114		7,047
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,813		17,374		8,610
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	188		406		400
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,456		15,512		8,462
Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,835		4,712		3,237
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,349		5,173		3,730
Related Allowance	119		1,068		235
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,857		4,824		2,248
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	73		112		139
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	440		894		608
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	966		3,009		1,030
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	22		74		47
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	497		1,235		903
Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member]	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	27,418		23,996		28,935
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	27,565		24,940		29,051
Related Allowance	2,111		1,686		1,366
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	28,474		21,742		26,792
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	551		499		1,194
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	5,330		10,856		4,077
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,842		13,464		6,213
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	218		293		352
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,875		9,623		5,046
Commercial Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		0
Purchased Life Insurance Loans [Member] | Premium finance receivables	'		'		'
Financing Receivable, Impaired [Line Items]	'		'		'
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$0		$0		$0
[1]	These impaired loans require an allowance for loan losses because the estimated fair value of the loans or related collateral is less than the recorded investment in the loans.
[2]	Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.

Allowance_for_Loan_Losses_Allo8

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of The Post-Modification Balance Of Loans Restructured) (Detail) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

contracts

contracts

contracts

contracts

contracts

contracts

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

$2,240

[1],[2]

$14,468

[1],[2]

$7,485

[1],[2]

$16,745

[1],[2]

$13,420

[1],[3]

$28,921

[1],[3]

Payments in Default, Count

6

[1],[4]

14

[1],[4]

6

[1],[4]

14

[1],[4]

'

'

Payments in Default, Balance

4,176

[1],[4]

4,562

[1],[4]

4,176

[1],[4]

4,562

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

7

[1],[2]

12

[1],[2]

13

[1],[2]

26

[1],[2]

22

[1],[3]

51

[1],[3]

Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

1,243

[1]

14,092

[1]

5,215

[1]

15,927

[1]

'

'

Troubled debt restructuring modifications, number of count

3

[1]

10

[1]

8

[1]

21

[1]

'

'

Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

1,230

[1]

4,883

[1]

5,107

[1]

6,989

[1]

'

'

Troubled debt restructuring modifications, number of count

5

[1]

6

[1]

8

[1]

17

[1]

'

'

Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

220

[1]

6,231

[1]

2,659

[1]

6,539

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

4

[1]

4

[1]

7

[1]

'

'

Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

73

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

1

[1]

'

'

Residential Real Estate And Other [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

220

[1],[2]

401

[1],[2]

220

[1],[2]

778

[1],[2]

1,738

[1],[3]

1,341

[1],[3]

Payments in Default, Count

1

[1],[4]

5

[1],[4]

1

[1],[4]

5

[1],[4]

'

'

Payments in Default, Balance

169

[1],[4]

563

[1],[4]

169

[1],[4]

563

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

1

[1],[2]

3

[1],[2]

1

[1],[2]

7

[1],[2]

4

[1],[3]

12

[1],[3]

Residential Real Estate And Other [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

220

[1]

25

[1]

220

[1]

95

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

1

[1]

1

[1]

3

[1]

'

'

Residential Real Estate And Other [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

401

[1]

0

[1]

762

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

3

[1]

0

[1]

6

[1]

'

'

Residential Real Estate And Other [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

220

[1]

111

[1]

220

[1]

234

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

1

[1]

1

[1]

2

[1]

'

'

Residential Real Estate And Other [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Commercial and industrial | Commercial Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1],[2]

0

[1],[2]

88

[1],[2]

708

[1],[2]

88

[1],[3]

2,136

[1],[3]

Payments in Default, Count

0

[1],[4]

3

[1],[4]

0

[1],[4]

3

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

236

[1],[4]

0

[1],[4]

236

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

0

[1],[2]

0

[1],[2]

1

[1],[2]

6

[1],[2]

1

[1],[3]

11

[1],[3]

Commercial and industrial | Commercial Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

88

[1]

573

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

1

[1]

5

[1]

'

'

Commercial and industrial | Commercial Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

553

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

4

[1]

'

'

Commercial and industrial | Commercial Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

88

[1]

185

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

1

[1]

2

[1]

'

'

Commercial and industrial | Commercial Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1],[2]

6,120

[1],[2]

0

[1],[2]

6,120

[1],[2]

0

[1],[3]

6,120

[1],[3]

Payments in Default, Count

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

0

[1],[2]

3

[1],[2]

0

[1],[2]

3

[1],[2]

0

[1],[3]

3

[1],[3]

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

6,120

[1]

0

[1]

6,120

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

3

[1]

0

[1]

3

[1]

'

'

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

6,120

[1]

0

[1]

6,120

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

3

[1]

0

[1]

3

[1]

'

'

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1],[2]

0

[1],[2]

0

[1],[2]

287

[1],[2]

2,352

[1],[3]

287

[1],[3]

Payments in Default, Count

1

[1],[4]

0

[1],[4]

1

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

2,352

[1],[4]

0

[1],[4]

2,352

[1],[4]

0

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

0

[1],[2]

0

[1],[2]

0

[1],[2]

2

[1],[2]

1

[1],[3]

2

[1],[3]

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

287

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

2

[1]

'

'

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

287

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

2

[1]

'

'

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

73

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

1

[1]

'

'

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

790

[1],[2]

3,465

[1],[2]

790

[1],[2]

3,465

[1],[2]

1,345

[1],[3]

3,465

[1],[3]

Payments in Default, Count

0

[1],[4]

1

[1],[4]

0

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

1,648

[1],[4]

0

[1],[4]

1,648

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

1

[1],[2]

3

[1],[2]

1

[1],[2]

3

[1],[2]

2

[1],[3]

3

[1],[3]

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

790

[1]

3,465

[1]

790

[1]

3,465

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

3

[1]

1

[1]

3

[1]

'

'

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1],[2]

949

[1],[2]

1,078

[1],[2]

949

[1],[2]

1,078

[1],[3]

1,676

[1],[3]

Payments in Default, Count

1

[1],[4]

1

[1],[4]

1

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

1,078

[1],[4]

727

[1],[4]

1,078

[1],[4]

727

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

2

[1],[3]

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

949

[1]

1,078

[1]

949

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

1

[1]

1

[1]

1

[1]

'

'

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

949

[1]

0

[1]

949

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

1

[1]

0

[1]

1

[1]

'

'

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

1,078

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

1

[1]

0

[1]

'

'

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1],[2]

0

[1],[2]

202

[1],[2]

200

[1],[2]

202

[1],[3]

5,085

[1],[3]

Payments in Default, Count

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

0

[1],[2]

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

4

[1],[3]

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

202

[1]

200

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

1

[1]

1

[1]

'

'

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

200

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

1

[1]

'

'

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

181

[1],[2]

0

[1],[2]

181

[1],[2]

705

[1],[2]

181

[1],[3]

1,085

[1],[3]

Payments in Default, Count

0

[1],[4]

1

[1],[4]

0

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

705

[1],[4]

0

[1],[4]

705

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

1

[1],[2]

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

2

[1],[3]

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

705

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

1

[1]

'

'

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

181

[1]

0

[1]

181

[1]

705

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

0

[1]

1

[1]

1

[1]

'

'

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

1,049

[1],[2]

3,533

[1],[2]

4,926

[1],[2]

3,533

[1],[2]

6,436

[1],[3]

7,230

[1],[3]

Payments in Default, Count

3

[1],[4]

3

[1],[4]

3

[1],[4]

3

[1],[4]

'

'

Payments in Default, Balance

577

[1],[4]

683

[1],[4]

577

[1],[4]

683

[1],[4]

'

'

Troubled debt restructuring modifications, number of count

4

[1],[2]

2

[1],[2]

7

[1],[2]

2

[1],[2]

11

[1],[3]

11

[1],[3]

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Extension at Below Market Terms [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

233

[1]

3,533

[1]

2,837

[1]

3,533

[1]

'

'

Troubled debt restructuring modifications, number of count

1

[1]

2

[1]

3

[1]

2

[1]

'

'

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Reduction of Interest Rate [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

1,049

[1]

3,533

[1]

4,926

[1]

3,533

[1]

'

'

Troubled debt restructuring modifications, number of count

4

[1]

2

[1]

7

[1]

2

[1]

'

'

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Modification to Interest Only Payments [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

0

[1]

0

[1]

1,273

[1]

0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

1

[1]

0

[1]

'

'

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member] | Forgiveness of Debt [Member]

'

'

'

'

'

'

Financing Receivable, Modifications [Line Items]

'

'

'

'

'

'

Restructured loans

$0

[1]

$0

[1]

$0

[1]

$0

[1]

'

'

Troubled debt restructuring modifications, number of count

0

[1]

0

[1]

0

[1]

0

[1]

'

'

[1]

Balances represent the recorded investment in the loan at the time of the restructuring.

[2]

TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.

[3]

Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.

[4]

TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.

Allowance_for_Loan_Losses_Allo9

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Summary Of Subsequent Default) (Detail) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

contracts

contracts

contracts

contracts

contracts

contracts

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

7

[1],[2]

12

[1],[2]

13

[1],[2]

26

[1],[2]

22

[1],[3]

51

[1],[3]

Total, Balance

$2,240

[1],[2]

$14,468

[1],[2]

$7,485

[1],[2]

$16,745

[1],[2]

$13,420

[1],[3]

$28,921

[1],[3]

Payments in Default, Count

6

[1],[4]

14

[1],[4]

6

[1],[4]

14

[1],[4]

'

'

Payments in Default, Balance

4,176

[1],[4]

4,562

[1],[4]

4,176

[1],[4]

4,562

[1],[4]

'

'

Residential Real Estate And Other [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

1

[1],[2]

3

[1],[2]

1

[1],[2]

7

[1],[2]

4

[1],[3]

12

[1],[3]

Total, Balance

220

[1],[2]

401

[1],[2]

220

[1],[2]

778

[1],[2]

1,738

[1],[3]

1,341

[1],[3]

Payments in Default, Count

1

[1],[4]

5

[1],[4]

1

[1],[4]

5

[1],[4]

'

'

Payments in Default, Balance

169

[1],[4]

563

[1],[4]

169

[1],[4]

563

[1],[4]

'

'

Commercial and industrial | Commercial Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

0

[1],[2]

0

[1],[2]

1

[1],[2]

6

[1],[2]

1

[1],[3]

11

[1],[3]

Total, Balance

0

[1],[2]

0

[1],[2]

88

[1],[2]

708

[1],[2]

88

[1],[3]

2,136

[1],[3]

Payments in Default, Count

0

[1],[4]

3

[1],[4]

0

[1],[4]

3

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

236

[1],[4]

0

[1],[4]

236

[1],[4]

'

'

Residential Construction [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

'

'

'

'

0

[1],[3]

1

[1],[3]

Total, Balance

'

'

'

'

0

[1],[3]

496

[1],[3]

Payments in Default, Count

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Commercial Real Estate Construction Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

0

[1],[2]

3

[1],[2]

0

[1],[2]

3

[1],[2]

0

[1],[3]

3

[1],[3]

Total, Balance

0

[1],[2]

6,120

[1],[2]

0

[1],[2]

6,120

[1],[2]

0

[1],[3]

6,120

[1],[3]

Payments in Default, Count

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Land Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

0

[1],[2]

0

[1],[2]

0

[1],[2]

2

[1],[2]

1

[1],[3]

2

[1],[3]

Total, Balance

0

[1],[2]

0

[1],[2]

0

[1],[2]

287

[1],[2]

2,352

[1],[3]

287

[1],[3]

Payments in Default, Count

1

[1],[4]

0

[1],[4]

1

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

2,352

[1],[4]

0

[1],[4]

2,352

[1],[4]

0

[1],[4]

'

'

Office Building Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

1

[1],[2]

3

[1],[2]

1

[1],[2]

3

[1],[2]

2

[1],[3]

3

[1],[3]

Total, Balance

790

[1],[2]

3,465

[1],[2]

790

[1],[2]

3,465

[1],[2]

1,345

[1],[3]

3,465

[1],[3]

Payments in Default, Count

0

[1],[4]

1

[1],[4]

0

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

1,648

[1],[4]

0

[1],[4]

1,648

[1],[4]

'

'

Industrial Loans [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

2

[1],[3]

Total, Balance

0

[1],[2]

949

[1],[2]

1,078

[1],[2]

949

[1],[2]

1,078

[1],[3]

1,676

[1],[3]

Payments in Default, Count

1

[1],[4]

1

[1],[4]

1

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

1,078

[1],[4]

727

[1],[4]

1,078

[1],[4]

727

[1],[4]

'

'

Retail Loan [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

0

[1],[2]

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

4

[1],[3]

Total, Balance

0

[1],[2]

0

[1],[2]

202

[1],[2]

200

[1],[2]

202

[1],[3]

5,085

[1],[3]

Payments in Default, Count

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

0

[1],[4]

0

[1],[4]

0

[1],[4]

'

'

Multi Family [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

1

[1],[2]

0

[1],[2]

1

[1],[2]

1

[1],[2]

1

[1],[3]

2

[1],[3]

Total, Balance

181

[1],[2]

0

[1],[2]

181

[1],[2]

705

[1],[2]

181

[1],[3]

1,085

[1],[3]

Payments in Default, Count

0

[1],[4]

1

[1],[4]

0

[1],[4]

1

[1],[4]

'

'

Payments in Default, Balance

0

[1],[4]

705

[1],[4]

0

[1],[4]

705

[1],[4]

'

'

Mixed Use And Other [Member] | Commercial Real Estate Portfolio Segment [Member]

'

'

'

'

'

'

Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]

'

'

'

'

'

'

Total, Count

4

[1],[2]

2

[1],[2]

7

[1],[2]

2

[1],[2]

11

[1],[3]

11

[1],[3]

Total, Balance

1,049

[1],[2]

3,533

[1],[2]

4,926

[1],[2]

3,533

[1],[2]

6,436

[1],[3]

7,230

[1],[3]

Payments in Default, Count

3

[1],[4]

3

[1],[4]

3

[1],[4]

3

[1],[4]

'

'

Payments in Default, Balance

$577

[1],[4]

$683

[1],[4]

$577

[1],[4]

$683

[1],[4]

'

'

[1]

Balances represent the recorded investment in the loan at the time of the restructuring.

[2]

TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.

[3]

Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.

[4]

TDRs considered to be in payment default are over 30 days past-due subsequent to the restructuring.

Recovered_Sheet1

Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Impaired Loans (Narrative) (Detail) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

contracts

contracts

contracts

contracts

contracts

contracts

Financing Receivable, Allowance for Credit Losses [Line Items]

'

'

'

'

'

'

'

Troubled debt restructuring modifications, number of count

7

[1],[2]

12

[1],[2]

13

[1],[2]

26

[1],[2]

22

[1],[3]

51

[1],[3]

'

Allowance for loan losses related to impaired loans

$10,298,000

$11,839,000

$10,298,000

$11,839,000

$10,298,000

$11,839,000

$8,265,000

Restructured loans

2,240,000

[1],[2]

14,468,000

[1],[2]

7,485,000

[1],[2]

16,745,000

[1],[2]

13,420,000

[1],[3]

28,921,000

[1],[3]

'

Weighted average extension term

'16 months

'16 months

'14 months

'17 months

'

'

'

Weighted average stated interest rate, basis points

1.37%

2.25%

1.67%

2.03%

'

'

'

Weighted average interest only term

'6 months

'11 months

'9 months

'11 months

'

'

'

Loan forgiveness

0

0

0

50,000

'

'

'

Financing Receivable [Member]

'

'

'

'

'

'

'

Financing Receivable, Allowance for Credit Losses [Line Items]

'

'

'

'

'

'

'

Restructured loans

88,107,000

126,196,000

88,107,000

126,196,000

88,107,000

126,196,000

107,103,000

Troubled debt restructuring modifications, number of count

'

'

143

'

'

'

'

Allowance for loan losses related to impaired loans

4,900,000

'

4,900,000

'

4,900,000

'

'

Interest income

103,000

296,000

235,000

522,000

'

'

'

Modification to Interest Only Payments [Member]

'

'

'

'

'

'

'

Financing Receivable, Allowance for Credit Losses [Line Items]

'

'

'

'

'

'

'

Troubled debt restructuring modifications, number of count

1

[1]

4

[1]

4

[1]

7

[1]

'

'

'

Restructured loans

$220,000

[1]

$6,231,000

[1]

$2,659,000

[1]

$6,539,000

[1]

'

'

'

[1]

Balances represent the recorded investment in the loan at the time of the restructuring.

[2]

TDRs may have more than one modification representing a concession. As such, TDRs during the period may be represented in more than one of the categories noted above.

[3]

Total TDRs represent all loans restructured in TDRs during the previous twelve months from the date indicated.

Recovered_Sheet2

Goodwill And Other Intangible Assets (Goodwill Assets By Business Segment) (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Goodwill [Roll Forward]	'	'
Beginning balance	$374,547,000	$356,871,000
Goodwill Acquired	7,035,000	'
Impairment Loss	0	'
Goodwill Adjustments	139,000	'
Ending balance	381,721,000	356,871,000
Community banking	'	'
Goodwill [Roll Forward]	'	'
Beginning balance	305,313,000	'
Goodwill Acquired	600,000	'
Impairment Loss	0	'
Goodwill Adjustments	0	'
Ending balance	305,913,000	'
Specialty finance	'	'
Goodwill [Roll Forward]	'	'
Beginning balance	37,370,000	'
Goodwill Acquired	6,435,000	'
Impairment Loss	0	'
Goodwill Adjustments	139,000	'
Ending balance	43,944,000	'
Wealth management	'	'
Goodwill [Roll Forward]	'	'
Beginning balance	31,864,000	'
Goodwill Acquired	0	'
Impairment Loss	0	'
Goodwill Adjustments	0	'
Ending balance	$31,864,000	'

Recovered_Sheet3

Goodwill And Other Intangible Assets (Summary of Finite-Lived Intangible Assets) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'	'
Other intangible assets	$16,894	$19,213	$20,137
Core deposit intangibles | Community banking	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross carrying amount	40,770	40,770	39,350
Accumulated amortization	-31,223	-29,189	-27,132
Net carrying amount	9,547	11,581	12,218
Customer list intangibles | Specialty finance	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross carrying amount	1,800	1,800	1,800
Accumulated amortization	-878	-805	-731
Net carrying amount	922	995	1,069
Customer list and other intangibles | Wealth management	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Gross carrying amount	7,690	7,690	7,690
Accumulated amortization	-1,265	-1,053	-840
Net carrying amount	$6,425	$6,637	$6,850

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Estimated Amortization) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'	'
Actual in three months ended June 30, 2014	$1,156	$1,164	$2,319	$2,284
Estimated remaining in 2014	2,051	'	2,051	'
Estimated-2015	2,791	'	2,791	'
Estimated-2016	2,180	'	2,180	'
Estimated-2017	1,764	'	1,764	'
Estimated-2018	$1,544	'	$1,544	'

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Narrative) (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Amortization of other intangible assets	$1,156,000	$1,164,000	$2,319,000	$2,284,000
Community banking	'	'	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Goodwill, Period Increase (Decrease)	'	'	600,000	'
Community banking | Core deposit intangibles	'	'	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Amortization period in years, core deposit intangibles	'	'	'10 years	'
Specialty finance	'	'	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Goodwill, Period Increase (Decrease)	'	'	$6,600,000	'
Specialty finance | Customer list intangibles	'	'	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Amortization period in years, core deposit intangibles	'	'	'18 years	'
Wealth management | Customer list intangibles	'	'	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'	'	'
Amortization period in years, core deposit intangibles	'	'	'10 years	'

Deposits_Summary_Of_Deposits_D

Deposits (Summary Of Deposits) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Deposits [Abstract]	'	'	'
Non-interest bearing	$3,072,430	$2,721,771	$2,450,659
NOW	2,002,868	1,953,882	2,147,004
Wealth management deposits	1,220,102	1,013,850	1,083,897
Money market	3,591,540	3,359,999	3,037,354
Savings	1,427,222	1,392,575	1,304,619
Time certificates of deposit	4,242,214	4,226,712	4,342,321
Total deposits	$15,556,376	$14,668,789	$14,365,854
Non-interest bearing, Mix	20.00%	19.00%	17.00%
NOW, Mix	13.00%	13.00%	15.00%
Wealth management deposits, Mix	8.00%	7.00%	8.00%
Money market, Mix	23.00%	23.00%	21.00%
Savings, Mix	9.00%	9.00%	9.00%
Time certificates of deposit, Mix	27.00%	29.00%	30.00%
Total deposits, Mix	100.00%	100.00%	100.00%

Notes_Payable_Federal_Home_Loa2

Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes (Summary Of Notes Payable, Federal Home Loan Bank Advances, Other Borrowings, Secured Borrowings And Subordinated Notes) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'	'
Notes payable	$0	$364	$1,729
Federal Home Loan Bank advances	580,582	417,762	585,942
Securities sold under repurchase agreements	24,633	235,347	224,915
Other	19,083	19,393	27,861
Total other borrowings	43,716	254,740	252,776
Subordinated notes	140,000	0	10,000
Total notes payable, Federal Home Loan Bank advances, other borrowings and subordinated notes	$764,298	$672,866	$850,447

Notes_Payable_Federal_Home_Loa3

Notes Payable, Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes (Narrative) (Detail) (USD $)

1 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

Nov. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Mar. 15, 2011

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2010

Dec. 15, 2013

Dec. 07, 2010

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

subordinated_notes

Unsecured Debt [Member]

Unsecured Debt [Member]

Unsecured Debt [Member]

Revolving credit facility

Revolving credit facility

Notes Payable to Banks [Member]

Notes Payable to Banks [Member]

Securities Sold under Agreements to Repurchase [Member]

Securities Sold under Agreements to Repurchase [Member]

Securities Sold under Agreements to Repurchase [Member]

Borrowings From Banks And Brokers [Member]

Borrowings From Banks And Brokers [Member]

Borrowings From Banks And Brokers [Member]

Fixed Rate Promissory Note [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Subordinated Debt [Member]

Subordinated Note Due May Twenty Nine Two Thousand And Fifteen [Member]

Subordinated Note Due May Twenty Nine Two Thousand And Fifteen [Member]

London Interbank Offered Rate (LIBOR) [Member]

Federal Funds Rate [Member]

Base Rate Loan [Member]

Base Rate Loan [Member]

Base Rate Loan [Member]

Base Rate Loan [Member]

Eurodollar Rate Loan [Member]

Eurodollar Rate Loan [Member]

Subordinated Debt [Member]

Unsecured Debt [Member]

Base Rate [Member]

Prime Rate [Member]

Eurodollar Rate [Member]

Federal Funds Rate [Member]

Base Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes payable

'

$0

$0

$1,729,000

$364,000

'

'

'

$364,000

$729,000

$0

$0

'

$1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Frequency of Periodic Payment

'

'

'

'

'

'

'

'quarterly

'

'

'quarterly

'

'

'

'

'

'

'

'

'

'monthly

'

'

'quarterly

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loan agreement with unaffiliated banks, amount

'

'

'

'

'

101,000,000

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving Credit Facility

'

'

'

'

'

'

'

'

'

'

100,000,000

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity date

'

'

'

'

'

'

'

'

'

'

6-Nov-14

25-Oct-13

1-Jun-15

'

'

'

'

'

'

'

1-Sep-17

'

15-Dec-13

'

15-Dec-13

'

'

13-Jun-24

'

31-May-15

'

'

'

'

'

'

'

'

Contractual rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.75%

'

'

'

'

9.50%

'

5.00%

'

'

'

'

'

'

'

'

'

'

Proceeds from (Repayments of) Other Debt

'

'

-211,388,000

-22,881,000

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.50%

'

'

'

3.50%

'

Incremental interest rate over base rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.30%

1.00%

'

0.50%

1.50%

1.00%

'

2.50%

Commitment fee payment

'

'

'

'

'

'

'

'

'

'

0.38%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Securities sold under repurchase agreements

'

24,633,000

24,633,000

224,915,000

235,347,000

'

'

'

'

'

'

'

'

'

24,600,000

55,300,000

44,900,000

180,000,000

180,000,000

180,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Pledged Financial Instruments, Not Separately Reported, Securities for Repurchase Agreements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Issuance Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Aug-12

'

31-Dec-10

'

'

'

'

'

31-Oct-05

'

'

'

'

'

'

'

'

'

Fixed Rate Promissory Note

'

19,083,000

19,083,000

27,861,000

19,393,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44,700,000

'

'

'

'

'

'

'

'

'

'

'

Quarterly principal and interest payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Initial Payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subordinated notes

'

140,000,000

140,000,000

10,000,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

Subordinated Debt Issued, Gross

'

140,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of subordinated notes, net

'

139,100,000

139,090,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Remaining Subordinated Notes

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Early Repayment of Subordinated Debt

$10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Junior_Subordinated_Debentures2

Junior Subordinated Debentures (Summary Of The Company's Junior Subordinated Debentures) (Detail) (USD $)

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

In Thousands, unless otherwise specified

Wintrust Capital Trust III

Wintrust Statutory Trust IV

Wintrust Statutory Trust V

Wintrust Capital Trust VII

Wintrust Capital Trust VIII

Wintrust Capital Trust IX

Northview Capital Trust I

Town Bankshares Capital Trust I

First Northwest Capital Trust I

Junior Subordinated Debt [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Wintrust Capital Trust III

Wintrust Statutory Trust IV

Wintrust Statutory Trust V

Wintrust Capital Trust VII

Wintrust Capital Trust VIII

Wintrust Capital Trust IX

Northview Capital Trust I

Town Bankshares Capital Trust I

First Northwest Capital Trust I

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Rate

Subordinated Borrowing [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Securities

'

'

'

$774

$619

$1,238

$1,550

$1,238

$1,547

$186

$186

$155

'

'

'

'

'

'

'

'

'

'

Trust Preferred Securities

'

'

'

25,000

20,000

40,000

50,000

40,000

50,000

6,000

6,000

5,000

'

'

'

'

'

'

'

'

'

'

Junior subordinated debentures

$249,493

$249,493

$249,493

$25,774

$20,619

$41,238

$51,550

$41,238

$51,547

$6,186

$6,186

$5,155

'

'

'

'

'

'

'

'

'

'

Rate Structure

'

'

'

'L+3.25

'L+2.80

'L+2.60

'L+1.95

'L+1.45

'L+1.63

'L+3.00

'L+3.00

'L+3.00

'

'

'

'

'

'

'

'

'

'

Incremental interest rate over base rate

'

'

'

'

'

'

'

'

'

'

'

'

'

3.25%

2.80%

2.60%

1.95%

1.45%

1.63%

3.00%

3.00%

3.00%

Contractual rate

'

'

'

3.48%

3.03%

2.83%

2.18%

1.68%

1.86%

3.23%

3.23%

3.23%

'

'

'

'

'

'

'

'

'

'

Debt, weighted average interest rate

'

'

'

'

'

'

'

'

'

'

'

'

2.42%

'

'

'

'

'

'

'

'

'

Issue Date

'

'

'

30-Apr-03

31-Dec-03

31-May-04

31-Dec-04

31-Aug-05

30-Sep-06

31-Aug-03

31-Aug-03

31-May-04

'

'

'

'

'

'

'

'

'

'

Maturity Date

'

'

'

30-Apr-33

31-Dec-33

31-May-34

31-Mar-35

30-Sep-35

30-Sep-36

30-Nov-33

30-Nov-33

31-May-34

'

'

'

'

'

'

'

'

'

'

Earliest Redemption Date

'

'

'

30-Apr-08

31-Dec-08

30-Jun-09

31-Mar-10

30-Sep-10

30-Sep-11

31-Aug-08

31-Aug-08

31-May-09

'

'

'

'

'

'

'

'

'

'

Junior_Subordinated_Debentures3

Junior Subordinated Debentures (Narrative) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Sep. 30, 2013
In Thousands, unless otherwise specified				Junior Subordinated Debt [Member]	Cash Flow Hedge of Junior Subordinated Debentures [Member]	Cash Flow Hedge of Junior Subordinated Debentures [Member]	Cash Flow Hedge of Junior Subordinated Debentures [Member]
				Rate	Cash Flow Hedging [Member]	Cash Flow Hedging [Member]	Cash Flow Hedging [Member]
					Designated as Hedging Instrument [Member]	Designated as Hedging Instrument [Member]	Designated as Hedging Instrument [Member]
					Interest Rate Swaps and Caps [Member]	Interest Rate Cap [Member]	Interest Rate Swap [Member]
Subordinated Borrowing [Line Items]	'	'	'	'	'	'	'
Percentage ownership interest in subsidiary trusts	100.00%	'	'	'	'	'	'
Common securities, approximate percentage of junior subordinated debentures	3.00%	'	'	'	'	'	'
Trust preferred securities, approximate percentage of junior subordinated debentures	97.00%	'	'	'	'	'	'
Junior subordinated debentures	$249,493	$249,493	$249,493	'	'	'	'
Debt, weighted average interest rate	'	'	'	2.42%	'	'	'
Notional amount	'	'	'	'	$225,000	$90,000	'
Number of Derivative Contracts	'	'	'	'	'	2	2
Derivative, maturity date	'	'	'	'	'	'	30-Sep-13
Debt, hedge adjusted weighted average interest rate	'	'	'	3.14%	'	'	'
Consecutive quarters of deferred payment	20	'	'	'	'	'	'

Segment_Information_Summary_Of

Segment Information (Summary Of Certain Operating Information For Reportable Segments) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	$149,180	$135,824	$293,186	$266,537	'
Total net interest income, Change in Contribution	13,356	'	26,649	'	'
Total net interest income, Change in Contribution Percentage	10.00%	'	10.00%	'	'
Total non-interest income	54,102	63,995	99,631	121,374	'
Total non-interest income, Change in Contribution	-9,893	'	-21,743	'	'
Total non-interest income, Change in Contribution Percentage	-15.00%	'	-18.00%	'	'
Total net revenue	203,282	199,819	392,817	387,911	'
Total net revenue, Change in Contribution	3,463	'	4,906	'	'
Total net revenue, Change in Contribution Percentage	2.00%	'	1.00%	'	'
Total segment profit	38,541	34,307	73,041	66,359	'
Total segment profit, Change in Contribution	4,234	'	6,682	'	'
Total segment profit, Change in Contribution Percentage	12.00%	'	10.00%	'	'
Total assets	18,895,681	17,613,546	18,895,681	17,613,546	18,097,783
Total segment assets, Change in Contribution	1,282,135	'	'	'	'
Total segment assets, Change in Contribution Percentage	7.00%	'	'	'	'
Operating Segments [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	145,026	132,031	285,092	259,190	'
Total net interest income, Change in Contribution	12,995	'	25,902	'	'
Total net interest income, Change in Contribution Percentage	10.00%	'	10.00%	'	'
Total non-interest income	61,027	70,239	113,168	133,587	'
Total non-interest income, Change in Contribution	-9,212	'	-20,419	'	'
Total non-interest income, Change in Contribution Percentage	-13.00%	'	-15.00%	'	'
Total net revenue	206,053	202,270	398,260	392,777	'
Total net revenue, Change in Contribution	3,783	'	5,483	'	'
Total net revenue, Change in Contribution Percentage	2.00%	'	1.00%	'	'
Operating Segments [Member] | Community banking	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	121,228	111,366	237,983	217,596	'
Total net interest income, Change in Contribution	9,862	'	20,387	'	'
Total net interest income, Change in Contribution Percentage	9.00%	'	9.00%	'	'
Total non-interest income	33,337	45,365	60,656	85,966	'
Total non-interest income, Change in Contribution	-12,028	'	-25,310	'	'
Total non-interest income, Change in Contribution Percentage	-27.00%	'	-29.00%	'	'
Total net revenue	154,565	156,731	298,639	303,562	'
Total net revenue, Change in Contribution	-2,166	'	-4,923	'	'
Total net revenue, Change in Contribution Percentage	-1.00%	'	-2.00%	'	'
Total segment profit	24,628	21,995	47,209	42,974	'
Total segment profit, Change in Contribution	2,633	'	4,235	'	'
Total segment profit, Change in Contribution Percentage	12.00%	'	10.00%	'	'
Total assets	15,669,443	14,710,628	15,669,443	14,710,628	'
Total segment assets, Change in Contribution	958,815	'	'	'	'
Total segment assets, Change in Contribution Percentage	7.00%	'	'	'	'
Operating Segments [Member] | Specialty finance	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	19,792	17,384	39,004	34,866	'
Total net interest income, Change in Contribution	2,408	'	4,138	'	'
Total net interest income, Change in Contribution Percentage	14.00%	'	12.00%	'	'
Total non-interest income	8,455	8,193	16,336	15,497	'
Total non-interest income, Change in Contribution	262	'	839	'	'
Total non-interest income, Change in Contribution Percentage	3.00%	'	5.00%	'	'
Total net revenue	28,247	25,577	55,340	50,363	'
Total net revenue, Change in Contribution	2,670	'	4,977	'	'
Total net revenue, Change in Contribution Percentage	10.00%	'	10.00%	'	'
Total segment profit	10,302	9,692	19,284	18,321	'
Total segment profit, Change in Contribution	610	'	963	'	'
Total segment profit, Change in Contribution Percentage	6.00%	'	5.00%	'	'
Total assets	2,703,761	2,418,208	2,703,761	2,418,208	'
Total segment assets, Change in Contribution	285,553	'	'	'	'
Total segment assets, Change in Contribution Percentage	12.00%	'	'	'	'
Operating Segments [Member] | Wealth management	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	4,006	3,281	8,105	6,728	'
Total net interest income, Change in Contribution	725	'	1,377	'	'
Total net interest income, Change in Contribution Percentage	22.00%	'	20.00%	'	'
Total non-interest income	19,235	16,681	36,176	32,124	'
Total non-interest income, Change in Contribution	2,554	'	4,052	'	'
Total non-interest income, Change in Contribution Percentage	15.00%	'	13.00%	'	'
Total net revenue	23,241	19,962	44,281	38,852	'
Total net revenue, Change in Contribution	3,279	'	5,429	'	'
Total net revenue, Change in Contribution Percentage	16.00%	'	14.00%	'	'
Total segment profit	3,611	2,620	6,548	5,064	'
Total segment profit, Change in Contribution	991	'	1,484	'	'
Total segment profit, Change in Contribution Percentage	38.00%	'	29.00%	'	'
Total assets	522,477	484,710	522,477	484,710	'
Total segment assets, Change in Contribution	37,767	'	'	'	'
Total segment assets, Change in Contribution Percentage	8.00%	'	'	'	'
Intersegment Eliminations [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total net interest income	4,154	3,793	8,094	7,347	'
Total net interest income, Change in Contribution	361	'	747	'	'
Total net interest income, Change in Contribution Percentage	10.00%	'	10.00%	'	'
Total non-interest income	-6,925	-6,244	-13,537	-12,213	'
Total non-interest income, Change in Contribution	-681	'	-1,324	'	'
Total non-interest income, Change in Contribution Percentage	-11.00%	'	-11.00%	'	'
Total net revenue	-2,771	-2,451	-5,443	-4,866	'
Total net revenue, Change in Contribution	($320)	'	($577)	'	'
Total net revenue, Change in Contribution Percentage	-13.00%	'	-12.00%	'	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments Derivative Financial Instruments (Interest Rate Cap Derivative Summary) (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Interest Rate Cap Seventy Seven Million Notional May Two Thousand Fifteen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	$77,000
Fair Value as of End of Period	0
Interest Rate Cap Two Hundred Fifteen Million Notional May Two Thousand Sixteen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	215,000
Fair Value as of End of Period	172
Interest Rate Cap Ninety Six Million Five Hundred Thirty Thousand Notional April Two Thousand Fifteen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	96,530
Fair Value as of End of Period	0
Interest Rate Cap Fifty Six Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	56,500
Fair Value as of End of Period	134
Interest Rate Cap One Hundred Million Notional March Two Thousand Seventeen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	100,000
Fair Value as of End of Period	686
Interest Rate Cap Seventy Five Million Notional November Two Thousand Sixteen Maturity [Member] | Not Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	75,000
Fair Value as of End of Period	288
Total Interest Rate Cap [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	1,030,030
Fair Value as of End of Period	2,943
Cash Flow Hedging [Member] | Interest Rate Cap Twenty Million Notional September Two Thousand Fourteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	20,000
Fair Value as of End of Period	0
Cash Flow Hedging [Member] | Interest Rate Cap Forty Million Notional September Two Thousand Fourteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	40,000
Fair Value as of End of Period	0
Cash Flow Hedging [Member] | Interest Rate Cap Two Hundred Sixteen Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	216,500
Fair Value as of End of Period	389
Cash Flow Hedging [Member] | Interest Rate Cap Forty Three Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	43,500
Fair Value as of End of Period	103
Cash Flow Hedging [Member] | Interest Rate Cap Fifty Million Notional September Two Thousand Seventeen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	50,000
Fair Value as of End of Period	637
Cash Flow Hedging [Member] | Interest Rate Cap Forty Million Notional September Two Thousand Seventeen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	40,000
Fair Value as of End of Period	534
Cash Flow Hedging [Member] | Total Interest Rate Cap [Member] | Designated as Hedging Instrument [Member]	'
Interest Rate Cap Derivative Summary [Line Items]	'
Notional amount	410,000
Fair Value as of End of Period	$1,663

Derivative_Financial_Instrumen3

Derivative Financial Instruments Derivative Financial Instruments (Schedule Of Fair Value Of Derivative Financial Instruments) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	$37,461	$37,956	$38,118
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	36,733	34,807	33,788
Other Assets [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	50,967	48,221	60,554
Other Assets [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	1,728	1,883	2,240
Other Assets [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	49,239	46,338	58,314
Other Liabilities [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	43,650	37,264	37,654
Other Liabilities [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	2,730	3,161	4,416
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	40,920	34,103	33,238
Interest Rate Contract [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	35,733	36,073	35,878
Interest Rate Contract [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	34,003	31,646	29,372
Interest Rate Contract [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	1,663	1,776	2,146
Interest Rate Contract [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	2,727	3,160	4,416
Interest Rate Contract [Member] | Fair Value Hedging [Member] | Other Assets [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	65	107	94
Interest Rate Contract [Member] | Fair Value Hedging [Member] | Other Liabilities [Member] | Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	3	1	0
Interest Rate Lock Commitments [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	13,479	7,500	14,579
Interest Rate Lock Commitments [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	9	147	3,208
Forward Commitments to Sell Mortgage Loans [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	27	2,761	7,835
Forward Commitments to Sell Mortgage Loans [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	6,901	2,310	583
Foreign Exchange Contract [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Assets, Fair Value, Amount not Offset Against Collateral	0	4	22
Foreign Exchange Contract [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]	'	'	'
Derivative [Line Items]	'	'	'
Derivative Liabilities, Fair Value, Amount Not Offset Against Collateral	$7	$0	$75

Derivative_Financial_Instrumen4

Derivative Financial Instruments Derivative Financial Instruments (Schedule Of Cash Flow Hedging Instruments) (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Total Interest Rate Cap [Member]	'
Derivative [Line Items]	'
Notional amount	$1,030,030
Fair Value Asset (Liability)	2,943
Cash Flow Hedging [Member] | Interest Rate Swap Fifty Million Notional September Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	50,000
Fair Value Asset (Liability)	-1,795
Cash Flow Hedging [Member] | Interest Rate Swap Twenty Five Million Notional October Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	25,000
Fair Value Asset (Liability)	-932
Cash Flow Hedging [Member] | Total Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	75,000
Fair Value Asset (Liability)	-2,727
Cash Flow Hedging [Member] | Interest Rate Cap Twenty Million Notional September Two Thousand Fourteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	20,000
Fair Value Asset (Liability)	0
Cash Flow Hedging [Member] | Interest Rate Cap Forty Million Notional September Two Thousand Fourteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	40,000
Fair Value Asset (Liability)	0
Cash Flow Hedging [Member] | Interest Rate Cap Forty Three Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	43,500
Fair Value Asset (Liability)	103
Cash Flow Hedging [Member] | Interest Rate Cap Two Hundred Sixteen Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	216,500
Fair Value Asset (Liability)	389
Cash Flow Hedging [Member] | Interest Rate Cap Fifty Million Notional September Two Thousand Seventeen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	50,000
Fair Value Asset (Liability)	637
Cash Flow Hedging [Member] | Interest Rate Cap Forty Million Notional September Two Thousand Seventeen Maturity [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	40,000
Fair Value Asset (Liability)	534
Cash Flow Hedging [Member] | Total Interest Rate Cap [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	410,000
Fair Value Asset (Liability)	1,663
Cash Flow Hedging [Member] | Interest Rate Swaps and Caps [Member] | Designated as Hedging Instrument [Member]	'
Derivative [Line Items]	'
Notional amount	485,000
Fair Value Asset (Liability)	($1,064)

Derivative_Financial_Instrumen5

Derivative Financial Instruments Derivative Financial Instruments (Rollforward Of Amounts In Accumulated Other Comprehensive Income Related To Interest Rate Derivatives Designated As Cash Flow Hedges) (Detail) (Interest Rate Contract [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest Rate Contract [Member]	'	'	'	'
Rollforward of AOCI from Cash Flow Hedging Derivatives [Roll Forward]	'	'	'	'
Unrealized loss at beginning of period	($4,069)	($7,199)	($3,971)	($8,673)
Amount reclassified from accumulated other comprehensive income to interest expense on junior subordinated debentures	521	1,583	1,014	3,122
Amount of loss recognized in other comprehensive income	-1,147	586	-1,738	521
Unrealized loss at end of period	($4,695)	($5,030)	($4,695)	($5,030)

Derivative_Financial_Instrumen6

Derivative Financial Instruments Derivative Financial Instruments (Derivatives Used To Hedge Changes In Fair Value Attributable To Interest Rate Risk) (Detail) (Fair Value Hedging [Member], Designated as Hedging Instrument [Member], Interest Rate Contract [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of Gain or (Loss) Recognized in Income on Derivative	($26)	$67	($43)	$56
Amount of Gain or (Loss) Recognized in Income on Hedged Item	25	-57	40	-47
Income Statement Gain/(Loss) due to Hedge Ineffectiveness	($1)	$10	($3)	$9

Derivative_Financial_Instrumen7

Derivative Financial Instruments Derivative Financial Instruments (Summary Amounts Included In Consolidated Statement Of Income Related To Derivatives) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest Rate Swaps and Caps [Member] | Trading Revenue [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	($737)	$3,217	($1,414)	$2,920
Mortgage Banking Derivatives [Member] | Mortgage Banking Revenue [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	-4,885	-2,368	-1,208	-3,038
Covered Call Options [Member] | Fees From Covered Call Options [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	1,244	993	2,786	2,632
Foreign Exchange Contract [Member] | Trading Revenue [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	($10)	$79	($11)	($67)

Derivative_Financial_Instrumen8

Derivative Financial Instruments Derivative Financial Instruments (Derivative Asset and Liability Balance Sheet Offsetting) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013		Jun. 30, 2013
Derivative Assets	'	'		'
Gross Amounts Recognized	$37,461,000	$37,956,000		$38,118,000
Less: Amounts offset in the Statements of Financial Condition	0	0		0
Net amount presented in the Statements of Financial Condition	37,461,000	37,956,000		38,118,000
Offsetting Derivative Positions	-3,738,000	-8,826,000		-8,192,000
Securities Collateral Posted	0	0		0
Net Credit Exposure	33,723,000	29,130,000		29,926,000
Derivative Liabilities	'	'		'
Gross Amounts Recognized	36,733,000	34,807,000		33,788,000
Less: Amounts offset in the Statements of Financial Condition	0	0		0
Net amount presented in the Statements of Financial Condition	36,733,000	34,807,000		33,788,000
Offsetting Derivative Positions	-3,738,000	-8,826,000		-8,192,000
Securities Collateral Posted	-26,354,000	-25,981,000	[1]	-25,027,000
Net Credit Exposure	6,641,000	0		569,000
Security Owned and Pledged as Collateral, Fair Value	'	$34,600,000		'
[1]	As of December 31, 2013, the Company posted securities collateral of $34.6 million which resulted in excess collateral with its counterparties. For purposes of this disclosure, the amount of posted collateral is limited to the amount offsetting the derivative liability.

Derivative_Financial_Instrumen9

Derivative Financial Instruments Derivative Financial Instruments (Narrative) (Detail) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

9 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Sep. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Interest Rate Cap [Member]

Interest Rate Cap [Member]

Interest Rate Contract [Member]

Forward Commitments to Sell Mortgage Loans [Member]

Interest Rate Lock Commitments [Member]

Foreign Exchange Contract [Member]

Call Options Written [Member]

Call Options Written [Member]

Call Options Written [Member]

Minimum [Member]

Maximum [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Cash flow hedge of variable rate deposits [Member]

Interest Rate Cap Two Hundred Sixteen Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member]

Interest Rate Cap Forty Three Million Five Hundred Thousand Notional August Two Thousand Sixteen Maturity [Member]

Cash Flow Hedge of Junior Subordinated Debentures [Member]

Cash Flow Hedge of Junior Subordinated Debentures [Member]

Cash Flow Hedge of Junior Subordinated Debentures [Member]

De-designated Hedge [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

derivative_instruments

derivative_instruments

derivative_instruments

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Swap [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

contracts

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Interest Rate Cap [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Interest Rate Swap [Member]

Interest Rate Swap [Member]

Interest Rate Cap [Member]

derivative_instruments

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

derivative_instruments

derivative_instruments

derivative_instruments

Derivative Instruments, Gain (Loss) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Interest Rate Derivatives Held

'

'

'

'

'

'

6

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

2

'

'

'

2

4

Notional amount

'

'

'

'

'

$96,500,000

$620,000,000

$2,900,000,000

$620,500,000

$406,000,000

$1,200,000

'

'

'

'

'

'

'

$5,500,000

'

'

'

'

'

$216,500,000

$43,500,000

'

'

$90,000,000

Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

Amount reclassified from accumulated other comprehensive income to interest expense

'

'

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Statement Gain/(Loss) due to Hedge Ineffectiveness

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,000

10,000

-3,000

9,000

'

'

'

'

'

'

Fair value hedges recognized interest income

10,000

7,000

20,000

5,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis Amortization of Hedged item no longer in a Hedging Relationship

43,000

'

86,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Jul-14

31-Jan-33

'

'

'

'

'

'

'

'

'

'

30-Sep-13

'

'

Loans Held-for-sale, Fair Value Disclosure

363,627,000

537,991,000

363,627,000

537,991,000

334,327,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Number of Instruments Held

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Net Liability Position, Aggregate Fair Value

$33,700,000

'

$33,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet4

Fair Values Of Assets And Liabilities (Summary Of Balances Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	$1,824,240	$2,176,290	$1,843,824
Trading account securities	2,234	497	659
Derivative assets	37,461	37,956	38,118
Derivative liabilities	36,733	34,807	33,788
US Treasury Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	388,415	336,095	210,975
U.S. Government Agencies Debt Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	766,000	895,688	958,458
Municipal Bonds [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	176,107	152,716	150,127
Asset-backed Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	303,563	605,225	332,767
Equity Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	54,852	51,528	49,564
Fair Value, Measurements, Recurring [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Trading account securities	2,234	497	659
Mortgage loans held-for-sale	363,627	332,485	525,027
Mortgage servicing rights	8,227	8,946	8,636
Nonqualified deferred compensation assets	7,850	7,222	6,793
Derivative assets	50,967	48,221	60,554
Total	2,257,145	2,573,661	2,445,493
Derivative liabilities	43,650	37,264	37,654
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	388,415	336,095	210,975
Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies Debt Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	766,000	895,688	958,458
Fair Value, Measurements, Recurring [Member] | Municipal Bonds [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	176,107	152,716	150,127
Fair Value, Measurements, Recurring [Member] | Corporate Notes [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	135,303	135,038	141,933
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	303,563	605,225	332,767
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	54,852	51,528	49,564
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Trading account securities	'	'	'
Mortgage loans held-for-sale	'	'	'
Mortgage servicing rights	'	'	'
Nonqualified deferred compensation assets	'	'	'
Derivative assets	'	'	'
Total	'	'	'
Derivative liabilities	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | US Treasury Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Government Agencies Debt Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Municipal Bonds [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Notes [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Asset-backed Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Equity Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	'	'	'
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Trading account securities	2,234	497	659
Mortgage loans held-for-sale	363,627	332,485	525,027
Mortgage servicing rights	0	0	0
Nonqualified deferred compensation assets	7,850	7,222	6,793
Derivative assets	50,967	48,221	60,554
Total	2,186,713	2,506,166	2,381,997
Derivative liabilities	43,650	37,264	37,654
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | US Treasury Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	388,415	336,095	210,975
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. Government Agencies Debt Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	766,000	895,688	958,458
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Municipal Bonds [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	138,054	116,330	117,695
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Notes [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	135,303	135,038	141,933
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	303,563	605,225	332,767
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equity Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	30,700	29,365	27,136
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Trading account securities	0	0	0
Mortgage loans held-for-sale	0	0	0
Mortgage servicing rights	'	8,946	8,636
Nonqualified deferred compensation assets	0	0	0
Derivative assets	0	0	0
Total	70,432	67,495	63,496
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | US Treasury Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	0	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. Government Agencies Debt Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	0	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Municipal Bonds [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	38,053	36,386	32,432
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate Notes [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	0	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Asset-backed Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	0	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Securities [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Available-for-sale securities, at fair value	$24,152	$22,163	$22,428

Recovered_Sheet5

Fair Values Of Assets And Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail) (USD $)	3 Months Ended				6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Mortgage Servicing Rights [Member]	'		'		'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'		'		'		'
Beginning Balance	$8,719		$7,344		$8,946		$6,750
Total net gains (losses) included in Net income	-492	[1]	1,292	[2]	-719	[1]	1,886	[2]
Total net gains (losses) included in Other comprehensive income	'		'		'		'
Purchases	'		'		'		'
issuances	'		'		'		'
Sales	'		'		'		'
Settlements	'		'		'		'
Net transfers into Level 3	'		'		'		'
Ending Balance	8,227		8,636		8,227		8,636
Municipal Bonds [Member]	'		'		'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'		'		'		'
Beginning Balance	39,772		32,324		36,386		30,770
Total net gains (losses) included in Net income	'		'		'		'
Total net gains (losses) included in Other comprehensive income	73		-302		220		-314
Purchases	1,606		660		4,966		2,347
issuances	'		'		'		'
Sales	'		'		'		'
Settlements	-3,398		-250		-3,519		-371
Net transfers into Level 3	'		'		'		'
Ending Balance	38,053		32,432		38,053		32,432
Equity Securities [Member]	'		'		'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'		'		'		'
Beginning Balance	23,438		24,470		22,163		22,169
Total net gains (losses) included in Net income	'		'		'		'
Total net gains (losses) included in Other comprehensive income	714		-2,042		1,989		259
Purchases	'		'		'		'
issuances	'		'		'		'
Sales	'		'		'		'
Settlements	'		'		'		'
Net transfers into Level 3	'		'		'		'
Ending Balance	$24,152		$22,428		$24,152		$22,428
[1]	Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.
[2]	(1)Changes in the balance of mortgage servicing rights are recorded as a component of mortgage banking revenue in non-interest income.

Fair_Values_Of_Assets_And_Liab2

Fair Values Of Assets And Liabilities (Summary Of Assets Measured At Fair Value On A Nonrecurring Basis) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Fair Value Losses Recognized, Impaired loansbcollateral based	$6,133		$13,697
Fair Value Losses Recognized, Other real estate owned	2,761	[1]	8,933	[1]
Fair Value Losses Recognized, Total	8,894		22,630
Fair Value, Measurements, Nonrecurring [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Impaired loans - collateral based	65,046		65,046
Other real estate owned	115,584		115,584
Total	180,630		180,630
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Impaired loans - collateral based	0		0
Other real estate owned	0		0
Total	0		0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Impaired loans - collateral based	0		0
Other real estate owned	0		0
Total	0		0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Impaired loans - collateral based	65,046		65,046
Other real estate owned	115,584		115,584
Total	$180,630		$180,630
[1]	Fair value losses recognized, net on other real estate owned include valuation adjustments and charge-offs during the respective period.

Fair_Value_Of_Assets_and_Liabi

Fair Value Of Assets and Liabilities (Schedule Of Valuation Techniques And Significant Unobservable Inputs Used To Measure Both Recurring And Non-Recurring) (Detail) (USD $)

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

In Thousands, unless otherwise specified

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Impaired Loans [Member]

Other Real Estate Owned [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights Discount Rate Input [Member]

Mortgage Servicing Rights Prepayment Rate Input [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Level 3 [Member]

Level 3 [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Other Real Estate Owned [Member]

Equity Securities [Member]

Other Real Estate Owned [Member]

Equity Securities [Member]

Level 3 [Member]

Minimum [Member]

Maximum [Member]

Level 3 [Member]

Level 3 [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Fair Value, Measurements, Recurring [Member]

Level 3 [Member]

Level 3 [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available-for-sale securities, at fair value

$1,824,240

$2,176,290

$1,843,824

'

'

'

'

'

'

'

'

'

$176,107

'

$152,716

$150,127

'

'

$176,107

$152,716

$150,127

$38,053

$36,386

$32,432

$54,852

'

$51,528

$49,564

'

'

$54,852

$51,528

$49,564

$24,152

$22,163

$22,428

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

'

'

'

'

'

'

'

'

'

'

'

38,053

39,772

36,386

32,432

32,324

30,770

'

'

'

'

'

'

24,152

23,438

22,163

22,428

24,470

22,169

'

'

'

'

'

'

'

'

'

'

8,227

8,719

8,946

8,636

7,344

6,750

'

'

'

'

'

Impaired loans - collateral based

'

'

'

'

'

'

65,046

'

'

65,046

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other real estate owned

'

'

'

'

'

'

115,584

'

'

115,584

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Valuation Methodology

'

'

'

'

'

'

'

'

'

'

'Appraisal value

'Appraisal value

'

'

'

'

'

'

'

'

'

'Bond pricing

'

'

'

'

'

'

'

'

'

'

'

'Discounted cash flows

'

'

'

'

'

'

'

'

'

'

'

'

'Discounted cash flows

'

'

'

'

Significant Unobservable Input

'

'

'

'

'

'

'

'

'

'

'

'Property specific valuation adjustment

'

'

'

'

'

'

'

'

'

'Equivalent rating

'

'

'

'

'

'

'

'

'

'

'

'Discount rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Discount rate

'Constant prepayment rate (CPR)

Level 3 Fair Value Measurements Range of Inputs

'

'

'

'

'

'

'

'

'

'

'

'(40)% - 55%

'

'

'

'

'

'

'

'

'

'BBB-AA+

'

'

'

'

'

'

'

'

'

'

'

'1.24%-2.10%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'9.5%-13%

'11%-16%

Weighted Average of Inputs

'

'

'

'

'

'

'

'

'

'

'

-2.81%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.72%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.66%

12.68%

Impact to valuation from an increased or higher input value

'

'

'

'

'

'

'

'

'

'

'

'Increase

'

'

'

'

'

'

'

'

'

'Increase

'

'

'

'

'

'

'

'

'

'

'

'Decrease

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Decrease

'Decrease

Fair Value Of Mortgage Servicing Rights

'

'

'

$8,227

$8,946

$8,636

'

$8,946

$8,636

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$8,227

'

'

'

'

Fair Value Inputs, Discount Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.24%

'

2.10%

'

'

'

'

'

'

'

9.50%

13.00%

'

'

Fair Value Inputs, Prepayment Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

16.00%

'

'

Fair Value Inputs, Property Specific Valuation Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-40.00%

'

55.00%

'

'

'

'

'

'

'

'

'

'

'

'

Recovered_Sheet6

Fair Value Of Assets And Liabilities (Summary Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'	'
Interest bearing deposits with banks	$506,871	'	$495,574	$440,656	'	'
Available-for-sale securities, at fair value	1,824,240	'	2,176,290	1,843,824	'	'
Trading account securities	2,234	'	497	659	'	'
Brokerage customer receivables	28,199	'	30,953	26,214	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	84,531	'	79,261	79,354	'	'
FDIC indemnification asset	46,115	60,298	85,672	137,681	170,696	208,160
Federal Home Loan Bank advances	580,582	'	417,762	585,942	'	'
Subordinated notes	140,000	'	0	10,000	'	'
Other borrowings	43,716	'	254,740	252,776	'	'
Junior subordinated debentures	249,493	'	249,493	249,493	'	'
Fair Value [Member]	'	'	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'	'
Cash and cash equivalents	356,978	'	263,864	233,299	'	'
Interest bearing deposits with banks	506,871	'	495,574	440,656	'	'
Available-for-sale securities, at fair value	1,824,240	'	2,176,290	1,843,824	'	'
Trading account securities	2,234	'	497	659	'	'
Brokerage customer receivables	28,199	'	30,953	26,214	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	84,531	'	79,261	79,354	'	'
Mortgage loans held-for-sale, at fair value	363,627	'	332,485	525,027	'	'
Mortgage loans held-for-sale, at lower of cost or market	0	'	1,857	13,113	'	'
Total loans	14,741,579	'	13,867,255	13,613,298	'	'
Mortgage servicing rights	8,227	'	8,946	8,636	'	'
Nonqualified deferred compensation assets	7,850	'	7,222	6,793	'	'
Derivative assets	50,967	'	48,221	60,554	'	'
FDIC indemnification asset	46,115	'	85,672	137,681	'	'
Accrued interest receivable and other	165,511	'	163,732	163,703	'	'
Total financial assets	18,186,929	'	17,561,829	17,152,811	'	'
Non-maturity deposits	11,314,162	'	10,442,077	10,023,533	'	'
Deposits with stated maturities	4,255,896	'	4,242,172	4,359,361	'	'
Notes payable	0	'	364	1,729	'	'
Federal Home Loan Bank advances	585,792	'	422,750	591,183	'	'
Subordinated notes	144,899	'	0	10,000	'	'
Other borrowings	43,716	'	254,740	252,776	'	'
Junior subordinated debentures	250,492	'	250,672	250,597	'	'
Derivative liabilities	43,650	'	37,264	37,654	'	'
Interest Payable, Current	8,399	'	8,556	11,293	'	'
Total financial liabilities	16,647,006	'	15,658,595	15,538,126	'	'
Carrying Value [Member]	'	'	'	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'	'
Cash and cash equivalents	356,978	'	263,864	233,299	'	'
Interest bearing deposits with banks	506,871	'	495,574	440,656	'	'
Available-for-sale securities, at fair value	1,824,240	'	2,176,290	1,843,824	'	'
Trading account securities	2,234	'	497	659	'	'
Brokerage customer receivables	28,199	'	30,953	26,214	'	'
Federal Home Loan Bank and Federal Reserve Bank stock, at cost	84,531	'	79,261	79,354	'	'
Mortgage loans held-for-sale, at fair value	363,627	'	332,485	525,027	'	'
Mortgage loans held-for-sale, at lower of cost or market	0	'	1,842	12,964	'	'
Total loans	14,025,150	'	13,243,033	12,971,494	'	'
Mortgage servicing rights	8,227	'	8,946	8,636	'	'
Nonqualified deferred compensation assets	7,850	'	7,222	6,793	'	'
Derivative assets	50,967	'	48,221	60,554	'	'
FDIC indemnification asset	46,115	'	85,672	137,681	'	'
Accrued interest receivable and other	165,511	'	163,732	163,703	'	'
Total financial assets	17,470,500	'	16,937,592	16,510,858	'	'
Non-maturity deposits	11,314,162	'	10,442,077	10,023,533	'	'
Deposits with stated maturities	4,242,214	'	4,226,712	4,342,321	'	'
Notes payable	0	'	364	1,729	'	'
Federal Home Loan Bank advances	580,582	'	417,762	585,942	'	'
Subordinated notes	140,000	'	0	10,000	'	'
Other borrowings	43,716	'	254,740	252,776	'	'
Junior subordinated debentures	249,493	'	249,493	249,493	'	'
Derivative liabilities	43,650	'	37,264	37,654	'	'
Interest Payable, Current	8,399	'	8,556	11,293	'	'
Total financial liabilities	$16,622,216	'	$15,636,968	$15,514,741	'	'

Fair_Values_Of_Assets_And_Liab3

Fair Values Of Assets And Liabilities (Narrative) (Detail) (USD $)

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Valued Using Discounted Cash Flow Model [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Mortgage Servicing Rights [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Municipal Bonds [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Equity Securities [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available-for-sale Securities

$1,824,240,000

'

$2,176,290,000

$1,843,824,000

$176,107,000

'

$152,716,000

$150,127,000

'

'

$54,852,000

'

$51,528,000

$49,564,000

'

'

'

'

'

$176,107,000

$152,716,000

$150,127,000

$54,852,000

$51,528,000

$49,564,000

'

'

'

'

$38,053,000

$36,386,000

$32,432,000

$24,152,000

$22,163,000

$22,428,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

'

'

'

38,053,000

39,772,000

36,386,000

32,432,000

32,324,000

30,770,000

24,152,000

23,438,000

22,163,000

22,428,000

24,470,000

22,169,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,227,000

8,719,000

8,946,000

8,636,000

7,344,000

6,750,000

'

'

'

'

Fair Value Inputs, Discount Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.24%

2.10%

1.72%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.50%

13.00%

9.66%

Fair Value Of Mortgage Servicing Rights

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,227,000

8,946,000

8,636,000

'

'

'

'

'

'

'

'

8,946,000

8,636,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,227,000

'

'

'

Fair Value Inputs, Prepayment Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

16.00%

12.68%

Remaining contractual principal balance outstanding, mortgage loans held-for-sale

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

340,500,000

314,900,000

539,500,000

'

'

'

'

'

'

'

'

'

'

'

Mortgage loans held-for-sale

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

363,627,000

332,485,000

525,027,000

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgages held for sale, past due 90 days and accruing

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total impaired loans

137,245,000

[1]

'

162,229,000

[1]

190,148,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

72,200,000

'

'

'

'

'

'

'

'

'

'

Impaired Loans Fair Value Disclosure

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

65,046,000

'

'

'

'

'

'

'

'

'

'

'

'

65,046,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other real estate owned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$115,584,000

'

'

'

'

'

'

'

'

'

'

'

'

$115,584,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Inputs, Property Specific Valuation Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-40.00%

55.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Level Three Fair Value Measurements Weighted Average Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.72%

'

'

'

'

'

'

-2.81%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Impaired loans are considered by the Company to be non-accrual loans, TDRs or loans with principal and/or interest at risk, even if the loan is current with all payments of principal and interest.

StockBased_Compensation_Plans_1

Stock-Based Compensation Plans (Weighted Average Assumptions Used To Determine The Options Fair Value) (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation [Abstract]	'	'
Expected dividend yield	0.40%	0.50%
Expected volatility	30.80%	59.60%
Risk-free rate	0.70%	0.70%
Expected option life (in years)	'4 years 6 months	'4 years 6 months

StockBased_Compensation_Plans_2

Stock-Based Compensation Plans (Summary Of Stock Option Activity) (Detail) (USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'		'
Common Shares, Outstanding at beginning of the period	1,524,672		1,745,427
Common Shares, Granted	364,767		223,995
Common Shares, Exercised	-88,141		-44,658
Common Shares, Forfeited or canceled	-43,617		-16,765
Common Shares, Outstanding at end of the period	1,757,681		1,907,999
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'		'
Weighted Average Strike Price, Outstanding at beginning of period	$42		$42.31
Weighted Average Strike Price, Granted	$46.85		$37.81
Weighted Average Strike Price, Exercised	$34.66		$28.27
Weighted Average Strike Price, Forfeited or canceled	$45.56		$38.64
Weighted Average Strike Price, Outstanding at end of period	$43.29		$42.15
Stock Options, Exercisable	1,143,629		1,399,796
Stock Options, Weighted Average Strike Price, Exercisable	$43.98		$45.04
Stock Options, Remaining Contractual Term, Outstanding, Years	'3 years 6 months 0 days	[1]	'3 years 1 month 6 days	[1]
Stock Options, Remaining Contractual Term, Exercisable, Years	'2 years 2 months 12 days	[1]	'2 years 1 month 6 days	[1]
Stock Options, Intrinsic Value, Outstanding	$9,833	[2]	$4,634	[2]
Stock Options, Intrinsic Value, Exercisable	$7,066	[2]	$2,552	[2]
[1]	(1)Represents the remaining weighted average contractual life in years.
[2]	Aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company's stock price on the last trading day of the quarter and the option exercise price, multiplied by the number of shares) that would have been received by the option holders if they had exercised their options on the last day of the quarter. Options with exercise prices above the stock price on the last trading day of the quarter are excluded from the calculation of intrinsic value. The intrinsic value will change based on the fair market value of the Company's stock.

StockBased_Compensation_Plans_3

Stock-Based Compensation Plans (Summary Of Plans' Restricted Share And Performance-Vested Stock Award Activity) (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'	'
Shares, Beginning of the Period	181,522	314,226	'	'
Shares, Granted	11,430	686	'	'
Shares, Vested and issued	-32,328	-121,472	'	'
Shares, Forfeited	-5,387	-872	'	'
Shares, Outstanding, End of the Period	155,237	192,568	'	'
Shares, Vested, but not issuable	85,000	85,000	'	'
Weighted Average Grant-Date Fair Value	$45.65	$41.74	$43.39	$37.99
Weighted Average Grant-Date Fair Value, Granted	$46.10	$35.92	'	'
Weighted Average Grant-Date Fair Value, Vested and issued	$34.57	$32.06	'	'
Weighted Average Grant-Date Fair Value, Forfeited	$36.89	$32.42	'	'
Weighted Average Grant-Date Fair Value, Vested, but not issuable	$51.88	$51.88	'	'
Performance Shares [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'	'
Shares, Beginning of the Period	307,512	214,565	'	'
Shares, Granted	93,123	103,987	'	'
Shares, Vested and issued	-15,944	0	'	'
Shares, Forfeited	-87,046	-6,441	'	'
Shares, Outstanding, End of the Period	297,645	312,111	'	'
Weighted Average Grant-Date Fair Value	$38.18	$33.96	$34.01	$32.08
Weighted Average Grant-Date Fair Value, Granted	$46.85	$37.81	'	'
Weighted Average Grant-Date Fair Value, Vested and issued	$33.28	$0	'	'
Weighted Average Grant-Date Fair Value, Forfeited	$33.64	$33.64	'	'

StockBased_Compensation_Plans_4

Stock-Based Compensation Plans (Narrative) (Detail) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

31-May-11

31-May-09

Jan. 31, 2007

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Jun. 30, 2014

Rate

Two Thousand And Seven Plan [Member]

Two Thousand And Seven Plan [Member]

Two Thousand And Seven Plan [Member]

Two Thousand And Seven Plan [Member]

Two Thousand And Seven Plan [Member]

Two Thousand And Seven Plan [Member]

Nineteen Ninety Seven Plan [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Ltip Awards [Member]

Ltip Awards [Member]

Ltip Awards [Member]

LTIP Performance-Based Stock Awards [Member]

LTIP Performance-Based Cash Awards [Member]

Performance Shares [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Rate

Rate

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares approved for issuance

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

Shares additionally approved for issuance

'

'

'

'

'

2,860,000

325,000

'

'

'

'

'

'

'

'

'

'

'

'

Shares available for future grants

'

'

'

'

389,125

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Award vesting period, maximum, years

'

'

'

'

'

'

'

'

'3 years

'5 years

'

'1 year

'5 years

'3 years

'

'

'

'

'

Share based payment award options term

'

'

'

'

'

'

'

'

'

'7 years

'10 years

'

'

'7 years

'

'

'

'

'

Allocated Share-based Compensation Expense

$2,100,000

$2,200,000

$5,900,000

$4,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Compensation Arrangement with Individual, Compensation Expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

3,000,000

'

Weighted average grant date fair value per share of options granted

'

'

$11.96

$17.55

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate intrinsic value of options exercised

'

'

$1,000,000

$375,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage Of Performance Based Award Payouts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

200.00%

'

'

'

Percentage Of Awards Paid In Performance Shares

'

'

17.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share Based Payment Award Shares Not Issued And Available For Future Use

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

77,288

Recovered_Sheet7

Shareholders' Equity And Earnings Per Share (Aggregate Fair Values Assigned To Each Component Of Tangible Equity Units Offering) (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2010	Dec. 07, 2010
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Units issued	'	4,600	[1]
Unit price	'	$50
Gross proceeds	'	$230,000
Issuance costs, including discount	'	7,353
Net proceeds	222,647	'
Tangible equity unit components	'	2
Equity Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Units issued	'	4,600	[1]
Unit price	'	$40.27
Gross proceeds	'	185,250
Issuance costs, including discount	'	5,934
Net proceeds	179,316	'
Tangible equity unit components	'	1
Borrowings	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Tangible equity unit components	'	1
Debt Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Units issued	'	4,600	[1]
Unit price	'	$9.73
Gross proceeds	'	44,750
Issuance costs, including discount	'	1,419
Net proceeds	43,331	'
Borrowings	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	43,331	'
Borrowings | Equity Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	0	'
Borrowings | Debt Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	43,331	'
Surplus	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	179,316	'
Surplus | Equity Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	179,316	'
Surplus | Debt Component	'	'
DisclosureShareholdersEquityAndEarningsPerShareAggregateFairValuesAssignedToEachComponent [Line Items]	'	'
Net proceeds	$0	'
[1]	TEUs consisted of two components: one unit of the equity component and one unit of the debt component.

Recovered_Sheet8

Shareholders' Equity And Earnings Per Share (Components Of Other Comprehensive Income (Loss)) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Activity Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Balance at beginning of period	($56,753)	($1,067)	($63,036)	$7,711
Other comprehensive income (loss) during the period, net of tax, before reclassifications	21,733	-49,089	27,699	-58,643
Amount reclassified from accumulated other comprehensive income (loss), net of tax	517	952	834	1,728
Net other comprehensive income (loss) during the period, net of tax	22,250	-48,137	28,533	-56,915
Balance at end of period	-34,503	-49,204	-34,503	-49,204
Accumulated Unrealized (Losses) Gains on Securities	'	'	'	'
Activity Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Balance at beginning of period	-39,923	1,910	-53,665	6,710
Other comprehensive income (loss) during the period, net of tax, before reclassifications	15,717	-43,122	29,439	-47,771
Amount reclassified from accumulated other comprehensive income (loss), net of tax	203	-1	223	-152
Net other comprehensive income (loss) during the period, net of tax	15,920	-43,123	29,662	-47,923
Balance at end of period	-24,003	-41,213	-24,003	-41,213
Accumulated Unrealized Losses on Derivative Instruments	'	'	'	'
Activity Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Balance at beginning of period	-2,521	-4,404	-2,462	-5,292
Other comprehensive income (loss) during the period, net of tax, before reclassifications	-691	351	-1,047	312
Amount reclassified from accumulated other comprehensive income (loss), net of tax	314	953	611	1,880
Net other comprehensive income (loss) during the period, net of tax	-377	1,304	-436	2,192
Balance at end of period	-2,898	-3,100	-2,898	-3,100
Accumulated Foreign Currency Translation Adjustment	'	'	'	'
Activity Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Balance at beginning of period	-14,309	1,427	-6,909	6,293
Other comprehensive income (loss) during the period, net of tax, before reclassifications	6,707	-6,318	-693	-11,184
Amount reclassified from accumulated other comprehensive income (loss), net of tax	0	0	0	0
Net other comprehensive income (loss) during the period, net of tax	6,707	-6,318	-693	-11,184
Balance at end of period	($7,602)	($4,891)	($7,602)	($4,891)

Shareholders_Equity_and_Earnin2

Shareholders' Equity and Earnings Per Share Shareholders' Equity And Earnings Per Share (Other Comprehensive Income Reclassified from AOCI) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'	'
(Losses) gains on available-for-sale securities, net	($336)	$2	($369)	$253
Interest on junior subordinated debentures	2,042	3,142	4,046	6,261
Income before taxes	63,031	56,250	119,371	108,536
Income tax expense	-24,490	-21,943	-46,330	-42,177
Net income	38,541	34,307	73,041	66,359
Accumulated Unrealized (Losses) Gains on Securities | Reclassification Out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'	'
(Losses) gains on available-for-sale securities, net	-336	2	-369	253
Income before taxes	-336	2	-369	253
Income tax expense	133	-1	146	-101
Net income	-203	1	-223	152
Accumulated Unrealized Losses on Derivative Instruments | Reclassification Out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]	'	'	'	'
Interest on junior subordinated debentures	521	1,583	1,014	3,122
Income before taxes	-521	-1,583	-1,014	-3,122
Income tax expense	207	630	403	1,242
Net income	($314)	($953)	($611)	($1,880)

Recovered_Sheet9

Shareholders' Equity And Earnings Per Share (Computation Of Basic And Diluted Earnings Per Common Share) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]	'	'	'	'
Net income	$38,541	$34,307	$73,041	$66,359
Less: Preferred stock dividends and discount accretion	1,581	2,617	3,162	5,233
Net income applicable to common shares - Basic	36,960	31,690	69,879	61,126
Add: Dividends on convertible preferred stock, if dilutive	1,581	2,581	3,162	5,162
Net income applicable to common shares - Diluted	$38,541	$34,271	$73,041	$66,288
Weighted average common shares outstanding	46,520	37,486	46,358	37,231
Effect of dilutive potential common shares	'	'	'	'
Common stock equivalents	1,327	7,334	1,381	7,343
Convertible preferred stock, if dilutive	3,075	5,020	3,075	5,020
Total dilutive potential common shares	4,402	12,354	4,456	12,363
Average common shares and dilutive common shares	50,922	49,840	50,814	49,594
Net income per common share-Basic	$0.79	$0.85	$1.51	$1.64
Net income per common share-Diluted	$0.76	$0.69	$1.44	$1.34

Shareholders_Equity_And_Earnin3

Shareholders' Equity And Earnings Per Share (Narrative) (Detail) (USD $)

0 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 19, 2008

Apr. 30, 2014

Feb. 28, 2014

Jan. 31, 2014

Feb. 28, 2013

Mar. 31, 2012

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2010

Dec. 31, 2013

Jul. 19, 2013

Dec. 07, 2010

Jul. 19, 2013

Aug. 31, 2008

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Mar. 31, 2012

Aug. 31, 2008

Mar. 31, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 15, 2013

Jun. 30, 2014

Dec. 31, 2010

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2010

Dec. 15, 2013

Mar. 15, 2011

Dec. 31, 2010

Dec. 07, 2010

1-May-13

Dec. 31, 2010

Dec. 31, 2010

Jun. 30, 2014

Jun. 30, 2014

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Equity Component

Equity Component

Equity Component

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

Junior Subordinated Amortizing Notes [Member]

First Lansing Bancorp, Inc. [Member]

Minimum [Member]

Maximum [Member]

US Treasury [Member]

Other Warrants [Member]

Debt [Member]

Debt [Member]

Debt [Member]

Equity Component

Equity Component

Temporary Equity [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount Of Tangible Equity Units Sold

'

'

'

'

'

'

'

'

'

'

'

'

'

4,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rate on tangible equity units

'

'

'

'

'

'

'

'

'

'

'

'

'

7.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tangible equity unit public offering price per unit

'

'

'

'

'

'

'

'

'

'

'

'

'

$50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds on sale of tangible equity units

'

'

'

'

'

'

'

'

'

'

$222,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Dec-13

15-Dec-13

'

15-Dec-13

'

'

15-Dec-13

'

'

'

'

'

'

Debt Instrument, Frequency of Periodic Payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'quarterly

'

'

'

'quarterly

'

'

'

'

'

'

Percentage of fair value of debt component quarterly cash payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7.50%

'

'

'

'

'

'

Discount rate on debt component

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.50%

'

'

'

'

'

Risk-free rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.95%

'

'

'

'

'

'

'

'

'

'

'

'

Expected stock price volatility minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35.00%

45.00%

'

'

Percent of dividend yield plus stock borrow cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.85%

'

'

'

'

'

'

'

'

'

'

'

'

Equity term, years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years 7 days

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated amortizing note, initial principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.728182

'

'

'

'

'

Contractual rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.50%

'

'

9.50%

'

'

'

'

'

Quarterly installments on amortizing note

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.989583

0.9375

'

'

'

'

'

'

Settlement rate, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.3333

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Consecutive Trading Days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'20

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount Per Share Reclassified From Surplus To Common Stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000

0

0

50,000

126,500

'

'

126,477

126,467

126,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, liquidation value per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,000

$1,000

$1,000

$1,000

$1,000

'

'

$1,000

$1,000

$1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$50,000,000

$0

$0

$49,976,000

$126,500,000

'

'

$126,477,000

$126,467,000

$126,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Dividend Payment Terms

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'quarterly

'

'

'

'

'quarterly

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, dividend rate, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

'

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible Preferred Stock, Terms of Conversion

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'38.88

'

'

'

'24.3132

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Shares Converted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000

'

'

'

'

'

'

10

23

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Issued During Period, Shares, Conversion of Convertible Securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,944,000

'

'

'

'

'

'

244

558

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, no par value

'

'

'

'

'

'

'

'

'

'

'

'

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants outstanding

1,643,295

'

'

'

'

19,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,143,366

0

Investment Warrants, Exercise Price

$22.82

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrant Termination Period

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants Exercised

'

'

'

'

1,000

18,000

499,929

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Shares, Issued from Exercise of Warrant Shares

'

'

'

'

'

'

259,071

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants Holders Common Stock Purchase Price Per Share

'

'

'

'

'

'

'

'

$30.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

648,286

'

'

'

'

Cash dividends declared per common share

'

$0.10

'

$0.10

'

'

$0.10

$0

$0.20

$0.09

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Dividends Per Share Declared Annualized

'

$0.40

'

$0.40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends Payable, Date to be Paid

'

22-May-14

20-Feb-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends Payable, Date of Record

'

8-May-14

6-Feb-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subsequent_Events_Detail

Subsequent Events (Detail) (Subsequent Event [Member], USD $)	0 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Jul. 11, 2014	Jul. 11, 2014	Aug. 08, 2014	Aug. 08, 2014
	THE National Bank [Member]	THE National Bank [Member]	Talmer Bank & Trust [Member]	Talmer Bank & Trust [Member]
				locations
Subsequent Event [Line Items]	'	'	'	'
Business Acquisition, Effective Date of Acquisition	11-Jul-14	'	8-Aug-14	'
Business Combination, Acquired Receivables, Fair Value	'	$81	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	'	$36	'	$360
Number of locations	'	'	'	11