MB Financial Inactive 10-Q10 Nov 142014 Q3 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2014	Nov. 10, 2014
Entity Registrant Name	'MB FINANCIAL INC /MD	'
Entity Central Index Key	'0001139812	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	74,767,180
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
ASSETS	'	'
Cash and due from banks	$267,405	$205,193
Interest earning deposits with banks	179,391	268,266
Total cash and cash equivalents	446,796	473,459
Federal funds sold	0	42,950
Investment securities:	'	'
Securities available for sale, at fair value	1,758,650	1,118,912
Securities held to maturity, at amortized cost ($1.0 billion fair value at September 30, 2014 and $1.2 billion at December 31, 2013)	1,005,349	1,182,533
Non-marketable securities - FHLB and FRB stock	75,569	51,417
Total investment securities	2,839,568	2,352,862
Loans held for sale	553,627	629
Loans:	'	'
Total loans, excluding purchased credit impaired and covered loans	8,710,060	5,476,831
Purchased credit impaired including covered loans	272,957	235,720
Total loans	8,983,017	5,712,551
Less: Allowance for loan losses	102,810	111,746
Net loans	8,880,207	5,600,805
Lease investment, net	137,120	131,089
Premises and equipment, net	244,314	221,065
Cash surrender value of life insurance	132,697	130,181
Goodwill	698,946	423,369
Other intangibles	44,544	23,428
Mortgage servicing rights, at fair value	249,376	413
Other real estate owned, net	19,179	23,289
Other real estate owned related to FDIC-assisted transactions	22,028	20,472
Other assets	237,641	197,416
Total assets	14,506,043	9,641,427
Deposits:	'	'
Noninterest bearing	3,807,554	2,375,863
Interest bearing	7,430,994	5,005,396
Total deposits	11,238,548	7,381,259
Short-term borrowings	667,160	493,389
Long-term borrowings	77,269	62,159
Junior subordinated notes issued to capital trusts	185,681	152,065
Accrued expenses and other liabilities	346,017	225,873
Total liabilities	12,514,675	8,314,745
STOCKHOLDERSâ€™ EQUITY	'	'
Preferred stock, ($0.01 par value, authorized 10,000,000 shares at September 30, 2014 and 1,000,000 at December 31, 2013; Series A, 8% perpetual non-cumulative, 4,000,000 shares issued and outstanding at September 30, 2014 and no shares outstanding at December 31, 2013, $25 liquidation value)	115,280	0
Common stock, ($0.01 par value; authorized 100,000,000 shares at September 30, 2014 and 70,000,000 at December 31, 2013; issued 75,054,114 shares at September 30, 2014 and 55,148,409 shares at December 31, 2013)	751	551
Additional paid-in capital	1,256,050	738,053
Retained earnings	606,097	581,998
Accumulated other comprehensive income	18,431	8,383
Less: 290,409 and 184,173 shares of treasury stock, at cost, at September 30, 2014 and December 31, 2013, respectively	-6,692	-3,747
Controlling interest stockholdersâ€™ equity	1,989,917	1,325,238
Noncontrolling interest	1,451	1,444
Total stockholdersâ€™ equity	1,991,368	1,326,682
Total liabilities and stockholdersâ€™ equity	$14,506,043	$9,641,427

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]	'	'
Securities held to maturity, at amortized cost, fair value	$1,045,517	$1,198,929
Preferred stock, par or stated value per share (in dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	1,000,000
Preferred stock, dividend rate, percentage	8.00%	'
Preferred stock, shares issued	4,000,000	0
Preferred stock, shares outstanding	4,000,000	0
Preferred stock, liquidation preference per share (in dollars per share)	$25	$0
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, authorized shares	100,000,000	70,000,000
Common stock, issued shares	75,054,114	55,148,409
Treasury stock, shares	290,409	184,173

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended			9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Interest income:	'		'	'		'
Loans Taxable	$79,902		$57,324	$187,497		$173,217
Loans Nontaxable	2,265		2,791	6,819		7,272
Investment securities:	'		'	'		'
Taxable	11,028		6,330	27,968		18,749
Nontaxable	9,041		8,175	25,393		24,399
Federal funds sold and other interest earning accounts	225		200	624		429
Total interest income	102,461		74,820	248,301		224,066
Interest expense:	'		'	'		'
Deposits	4,615		4,433	12,138		15,274
Short-term borrowings	231		112	426		395
Long-term borrowings and junior subordinated notes	2,003		1,367	4,725		4,324
Total interest expense	6,849		5,912	17,289		19,993
Net interest income	95,612		68,908	231,012		204,073
Provision for credit losses	3,109		-3,304	2,309		-2,804
Net interest income after provision for credit losses	92,503		72,212	228,703		206,877
Non-interest income:	'		'	'		'
Lease financing, net	17,719		14,070	45,768		45,435
Mortgage banking revenue	16,823		177	17,069		1,322
Commercial deposit and treasury management fees	9,345		6,327	23,595		18,322
Trust and asset management fees	5,712		4,799	16,324		14,167
Card fees	3,836		2,745	9,841		8,175
Capital markets and international banking fees	1,472		972	3,810		2,719
Consumer and other deposit service fees	3,362		3,648	9,453		10,487
Brokerage fees	1,145		1,289	3,826		3,680
Loan service fees	1,069		1,427	2,950		4,349
Increase in cash surrender value of life insurance	855		851	2,516		2,537
Net (loss) gain on investment securities	-3,246		1	-3,016		14
Net loss on sale of assets	-7		0	-24		0
Gain on extinguishment of debt	1,895		0	1,895		0
Other operating income	1,107		1,401	3,620		4,142
Total non-interest income	61,087		37,707	137,627		115,349
Non-interest expenses:	'		'	'		'
Salaries and employee benefits	79,492		44,918	170,491		132,341
Occupancy and equipment expense	11,742		8,797	30,852		27,609
Computer services and telecommunication expense	11,506		4,870	21,669		13,374
Advertising and marketing expense	2,235		1,917	6,537		6,187
Professional and legal expense	8,864		3,102	12,210		5,750
Other intangibles amortization expense	1,470		1,513	3,884		4,595
Net loss (gain) recognized on other real estate owned and other related expense	2,178		1,031	3,289		-322
Other operating expenses	24,714		10,117	47,346		28,413
Total non-interest expenses	142,201	[1]	76,265	296,278	[1]	217,947
Income before income taxes	11,389		33,654	70,052		104,279
Income tax expense	4,488		9,254	20,076		29,680
Net income	6,901		24,400	49,976		74,599
Dividends on preferred shares	2,000		0	2,000		0
Net income available to common stockholders	$4,901		$24,400	$47,976		$74,599
Common share data:	'		'	'		'
Basic earnings per common share	$0.08		$0.45	$0.83		$1.37
Diluted earnings per common share	$0.08		$0.44	$0.82		$1.36
Weighted average common shares outstanding for basic earnings per common share	63,972,902		54,565,089	57,795,094		54,471,541
Diluted weighted average common shares outstanding for diluted earnings per common share	64,457,978		55,130,653	58,341,927		54,912,352

[1]	Includes merger related expenses of $27.2 million and $28.3 million in the banking segment for the three and nine months ended September 30, 2014, respectively.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$6,901	$24,400	$49,976	$74,599
Unrealized holding gains (losses) on investment securities, net of reclassification adjustments	5,589	-6,097	16,089	-42,470
Reclassification adjustment for amortization of unrealized gains on investment securities transferred to held to maturity from available for sale	106	-1,008	-2,509	-1,008
Reclassification adjustments for losses (gains) included in net income	3,246	-1	3,016	-14
Other comprehensive income (loss), before tax	8,941	-7,106	16,596	-43,492
Income tax (expense) benefit related to items of other comprehensive income (loss)	-3,544	2,791	-6,548	17,084
Other comprehensive income (loss), net of tax	5,397	-4,315	10,048	-26,408
Comprehensive income	$12,298	$20,085	$60,024	$48,191

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net of Tax	Treasury Stock	Noncontrolling Interest
In Thousands, unless otherwise specified	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net of Tax	Treasury Stock	Noncontrolling Interest
Balance at Dec. 31, 2012	$1,275,770	'	$550	$732,771	$507,933	$36,326	($3,293)	$1,483
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'
Net income	74,736	'	'	'	74,599	'	'	137
Other comprehensive loss, net of tax	-26,408	'	'	'	'	-26,408	'	'
Cash dividends declared on common stock	-17,653	'	'	'	-17,653	'	'	'
Restricted common stock activity, net of tax	869	'	1	-757	-100	'	1,725	'
Stock option activity, net of tax	616	'	'	117	'	'	499	'
Repurchase of common shares in connection with employee benefit plans and held in trust for deferred compensation plan	-2,153	'	'	303	'	'	-2,456	'
Stock-based compensation expense	3,860	'	'	3,860	'	'	'	'
Distributions to noncontrolling interest	-169	'	'	'	'	'	'	-169
Balance at Sep. 30, 2013	1,309,468	0	551	736,294	564,779	9,918	-3,525	1,451
Balance at Dec. 31, 2013	1,326,682	'	551	738,053	581,998	8,383	-3,747	1,444
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'
Net income	50,196	'	'	'	49,976	'	'	220
Other comprehensive loss, net of tax	10,048	'	'	'	'	10,048	'	'
Issuance of preferred stock	115,280	115,280	'	'	'	'	'	'
Issuance of common stock due to business combination	509,992	'	196	509,796	'	'	'	'
Cash dividends declared on preferred shares	-2,000	'	'	'	-2,000	'	'	'
Cash dividends declared on common stock	-23,877	'	'	'	-23,877	'	'	'
Restricted common stock activity, net of tax	815	'	2	753	'	'	60	'
Stock option activity, net of tax	485	'	2	483	'	'	'	'
Repurchase of common shares in connection with employee benefit plans and held in trust for deferred compensation plan	-2,633	'	'	372	'	'	-3,005	'
Stock-based compensation expense	6,593	'	'	6,593	'	'	'	'
Distributions to noncontrolling interest	-213	'	'	'	'	'	'	-213
Balance at Sep. 30, 2014	$1,991,368	$115,280	$751	$1,256,050	$606,097	$18,431	($6,692)	$1,451

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]	'	'
Cash dividends declared (in dollars per share)	$0.38	$0.32

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash Flows From Operating Activities	'	'
Net income	$49,976	$74,599
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation of premises and equipment	14,088	13,165
Depreciation of leased equipment	28,557	24,933
Compensation expense for restricted stock awards	5,436	3,013
Compensation expense for stock option grants	1,157	847
Net (gain) loss on sales of premises and equipment and leased equipment	-1,612	-192
Amortization of other intangibles	3,884	4,595
Provision for credit losses	2,309	-2,804
Deferred income tax expense	22,192	13,067
Amortization of premiums and discounts on investment securities, net	33,661	35,364
Accretion of premiums and discounts on loans, net	-8,350	-5,462
Accretion of FDIC indemnification asset	-92	-307
Net loss (gain) on investment securities	3,016	-14
Proceeds from sale of loans held for sale	873,877	74,395
Origination of loans held for sale	-745,677	-66,667
Net gain on sale of loans held for sale	-7,285	-1,322
Change in fair value of mortgage servicing rights	-7,517	0
Net gain on sales of other real estate owned	-835	-977
Fair value adjustments on other real estate owned	2,509	-80
Net (gain) loss on sales of other real estate owned related to FDIC-assisted transactions	473	163
Increase in cash surrender value of life insurance	-2,516	-2,537
Decrease in other assets, net	61,370	30,976
Decrease in other liabilities, net	-46,942	-68,428
Net cash provided by operating activities	281,679	126,327
Cash Flows From Investing Activities	'	'
Decrease (increase) in federal funds sold	42,950	-47,500
Proceeds from sales of investment securities available for sale	463,306	989
Proceeds from maturities and calls of investment securities available for sale	195,219	415,780
Purchases of investment securities available for sale	-204,274	-364,550
Proceeds from maturities and calls of investment securities held to maturity	28,338	5,079
Purchases of investment securities held to maturity	-116,973	-55,409
Purchases of non-marketable securities - FHLB and FRB stock	-15	0
Redemption of non-marketable securities - FHLB and FRB stock	26,483	4,515
Net decrease in loans	255,979	170,586
Purchases in mortgage servicing rights	-489	0
Purchases of premises and equipment	-15,925	-11,342
Purchases of leased equipment	-30,440	-18,359
Proceeds from sales of leased equipment	7,499	6,672
Capital improvements on other real estate owned	0	-53
Proceeds from sale of other real estate owned	8,390	12,791
Proceeds from sale of other real estate owned related to FDIC-assisted transactions	11,022	7,535
Principal paid on lease investments	0	-1,127
Life insurance death benefit	'	2,083
Net cash acquired in business acquisition	34,174	0
Net proceeds from FDIC related covered assets	-189	11,347
Net cash provided by investing activities	705,055	139,037
Cash Flows From Financing Activities	'	'
Net decrease in deposits	-95,924	-244,011
Net (decrease) increase in short-term borrowings	-862,029	19,998
Proceeds from long-term borrowings	23,940	5,457
Principal paid on long-term borrowings	-8,830	-59,079
Redemption of junior subordinated notes issued to capital trusts	-45,369	0
Treasury stock transactions, net	-2,633	-1,653
Stock options exercised	902	1,014
Excess tax expense (benefits) from share-based payment arrangements	316	-402
Dividends paid on common stock	-23,770	-17,514
Net cash used in financing activities	-1,013,397	-296,190
Net decrease in cash and cash equivalents	-26,663	-30,826
Cash and cash equivalents:	'	'
Beginning of period	473,459	287,543
End of period	446,796	256,717
Cash payments for:	'	'
Interest paid to depositors and other borrowed funds	15,911	20,913
Net income tax payments, net	17,300	35,141
Supplemental Schedule of Noncash Investing Activities:	'	'
Investment securities available for sale purchased not settled	0	1,797
Transfer of investment securities available for sale to investment securities held to maturity	0	656,617
Transfer of investment securities held to maturity to investment securities available for sale	273,471	0
Loans transferred to other real estate owned	872	6,060
Loans transferred to other real estate owned related to FDIC-assisted transactions	13,179	11,580
Loans transferred to repossessed vehicles	609	606
Operating leases rewritten as direct finance leases included as loans	4,696	6,541
Noncash assets acquired:	'	'
Investment securities available for sale	826,691	'
Investment securities held to maturity	22,599	0
Non-marketable securities - FHLB and FRB stock	50,620	0
Loans held for sale	670,671	0
Loans	3,539,304	'
Lease investments	11,885	0
Premises and equipment	20,201	0
Goodwill	275,577	'
Core deposit intangible	25,000	'
Mortgage servicing rights	232,439	0
Other real estate owned	5,082	0
Other assets	113,266	'
Total noncash assets acquired	5,793,335	0
Liabilities assumed:	'	'
Deposits	3,953,213	'
Short-term borrowings	1,035,800	0
Junior subordinated notes issued to capital trusts	80,843	0
Other liabilities	123,103	'
Total liabilities assumed	$5,192,959	$0

Basis_of_Presentation

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation

	These unaudited consolidated financial statements include the accounts of MB Financial, Inc., a Maryland corporation (the “Company”), and its subsidiaries, including its wholly owned national bank subsidiary, MB Financial Bank, N.A. (“MB Financial Bank”), based in Chicago, Illinois. In the opinion of management, all normal recurring adjustments necessary for a fair presentation of the financial position, results of operations and cash flows for the interim periods have been made. The results of operations for the three months and nine months ended September 30, 2014 are not necessarily indicative of the results to be expected for the entire fiscal year.
	These unaudited interim financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and industry practice. Certain information in footnote disclosure normally included in financial statements prepared in accordance with U.S. GAAP and industry practice has been condensed or omitted pursuant to rules and regulations of the Securities and Exchange Commission. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions which affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, as well as the reported amounts of income and expenses during the reported periods. Actual results could differ from those estimates.
	Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity.

New_Authoritative_Accounting_G

New Authoritative Accounting Guidance	9 Months Ended
New Authoritative Accounting Guidance	Sep. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Authoritative Accounting Guidance	'
	New Authoritative Accounting Guidance

	ASC Topic 740 “Income Taxes.” New authoritative accounting guidance under ASC Topic 740, “Income Taxes” amended prior guidance to include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. An unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The Company adopted this new authoritative guidance on January 1, 2014, and it did not have an impact on the Company's statements of operations or financial condition.

	ASC Topic 310 “Receivables.” New authoritative accounting guidance under ASC Topic 310, “Receivables” amended prior guidance to clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical
	possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosures. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

	ASC Topic 323 “Investments - Equity Method and Joint Ventures.” New authoritative accounting guidance under ASC Topic 323, “Investments - Equity Method and Joint Ventures” amended prior guidance to permit entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the statement of operation as a component of income tax expense. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have a significant impact impact on the Company's statements of operations or financial condition.

	ASC Topics 205 “Presentation of Financial Statements” and 360 “Property, Plant, and Equipment.” New authoritative accounting guidance under ASC Topic 205, “Presentation of Financial Statements” and ASC Topic 360 “Property, Plant, and Equipment” amended prior guidance to change the requirements for reporting discontinued operations. The disposal of a component of an entity or group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The new authoritative guidance also requires additional disclosures about discontinued operations. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

	ASC Topic 860 “Transfers and Servicing.” New authoritative accounting guidance under ASC Topic 860, “Transfers and Servicing” amended prior guidance to change the accounting for repurchase-to-maturity transactions to secured borrowing accounting and to require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. The new authoritative guidance also requires disclosures for a transfer of a financial asset accounted for as a sale and an agreement with the same transferee entered into in contemplation of the initial transfer that results in the transferor retaining substantially all of the exposure to the economic return on the transferred financial asset throughout the term of the transaction. The new authoritative guidance will be effective for reporting periods after January 1, 2015, and the Company is assessing the impact on the statements of operations and financial condition.

	ASC Topic 718 “Compensation - Stock Compensation.” New authoritative accounting guidance under ASC Topic 718, “Compensation - Stock Compensation” amended prior guidance to require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

Earnings_Per_Common_Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Common Share	'
	Earnings Per Common Share

	Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested restricted stock awards and restricted stock units, though no actual shares of common stock related to restricted stock units are issued until the settlement of such units, to the extent holders of these securities receive non-forfeitable dividends or dividend equivalents at the same rate as holders of the Company's common stock. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method.

	The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share (amounts in thousands, except share and per share data).



		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014			2013		2014		2013
	Distributed earnings allocated to common stock	$	10,545		$	6,636	$	23,877	$	17,653

	Undistributed (loss) earnings	(3,644		)	17,764		26,099		56,946

	Net income	6,901			24,400		49,976		74,599

	Less: preferred stock dividends and discount accretion	2,000			—		2,000		—

	Net income available to common stockholders	4,901			24,400		47,976		74,599

	Less: earnings allocated to participating securities	—			1		1		2

	Earnings allocated to common stockholders	$	4,901		$	24,399	$	47,975	$	74,597

	Weighted average shares outstanding for basic earnings per common share	63,972,902			54,565,089		57,795,094		54,471,541

	Dilutive effect of equity awards	485,076			565,564		546,833		440,811

	Weighted average shares outstanding for diluted earnings per common share	64,457,978			55,130,653		58,341,927		54,912,352

	Basic earnings per common share	$	0.08		$	0.45	$	0.83	$	1.37

	Diluted earnings per common share	0.08			0.44		0.82		1.36

Business_Combinations

Business Combinations	9 Months Ended
Business Combinations	Sep. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	Business Combination

	On August 18, 2014, the Company acquired Taylor Capital Group, Inc. (“Taylor Capital”), a bank holding company and the parent company of Cole Taylor Bank, a commercial bank headquartered in Chicago, through the merger (the “Merger”) of Taylor Capital with and into the Company, followed immediately by the merger of Cole Taylor Bank with and into MB Financial Bank. This transaction solidifies the Company's market position in Chicago and diversifies its revenue streams. At the effective time of the Merger (the “Effective Time”), each share of the common stock of Taylor Capital and each share of nonvoting convertible preferred stock of Taylor Capital converted into the right to receive (1) 0.64318 of a share of the common stock of the Company, and (2) $4.08 in cash. All “in-the-money” Taylor Capital stock options and warrants outstanding immediately prior to the Effective Time were canceled in exchange for the right to receive a cash payment as provided in the merger agreement, as were the outstanding unvested restricted stock awards of Taylor Capital; however, the cash consideration payable for such restricted stock awards will remain subject to vesting or other lapse restrictions. Each share of Taylor Capital’s perpetual non-cumulative preferred stock, Series A, converted into the right to receive one share of the Company’s perpetual non-cumulative preferred stock, Series A.

	The Company issued approximately 19.6 million shares of common stock and paid approximately $120.5 million in cash in the Merger. For the “in-the-money” Taylor Capital stock options and warrants, the Company paid in the aggregate approximately $4.4 million in cash. For the outstanding unvested Taylor Capital restricted stock awards, the Company will pay or has paid in the aggregate up to approximately $3.7 million in cash, as and to the extent such awards vest. The $120.5 million cash consideration includes payments for the Taylor Capital stock options, warrants and restricted stock awards.

	This business combination was accounted for under the acquisition method of accounting. Accordingly, the results of operations of the acquired company have been included in the Company’s results of operations since the date of acquisition. Under this method of accounting, assets and liabilities acquired are recorded at their estimated fair values. The excess cost over fair value of net assets acquired is recorded as goodwill. In the event that the fair value of net assets acquired exceeds the cost, the Company will record a gain on the acquisition. As the consideration paid for Taylor Capital exceeded the net assets acquired, goodwill of $275.6 million was recorded on the acquisition. Goodwill will be allocated to our operating segments upon further analysis. Goodwill recorded in the transaction, which reflects the increased Chicago market share and related synergies expected from the combined operations, is not tax deductible. The amounts recognized in the financial statements for the business combination have been determined only provisionally as of the third quarter of 2014.

	Estimated fair values of the assets acquired and liabilities assumed in the Taylor Capital transaction, as of the closing date of the transaction were as follows (in thousands):



			August 18,
			2014
	ASSETS
	Cash and cash equivalents		$	154,684
	Cash and cash equivalents		$	154,684
	Investment securities available for sale		826,691
	Investment securities available for sale		826,691
	Investment securities held to maturity		22,599
	Investment securities held to maturity		22,599
	Non-marketable securities - FRB and FHLB Stock		50,620
	Non-marketable securities - FRB and FHLB Stock		50,620
	Loans held for sale		670,671
	Loans held for sale		670,671
	Loans		3,539,304
	Loans		3,539,304
	Leases investments, net		11,885
	Leases investments, net		11,885
	Premises and equipment		20,201
	Premises and equipment		20,201
	Goodwill		275,577
	Goodwill		275,577
	Core deposit intangible		25,000
	Core deposit intangible		25,000
	Mortgage servicing rights		232,439
	Mortgage servicing rights		232,439
	Other real estate owned		5,082
	Other real estate owned		5,082
	Other assets		113,266
	Other assets		113,266
	Total assets		$	5,948,019
	Total assets		$	5,948,019
	LIABILITIES
	Deposits		$	3,953,213
	Deposits		$	3,953,213
	Short-term borrowings		1,035,800
	Short-term borrowings		1,035,800
	Junior subordinated notes issued to capital trusts		80,843
	Junior subordinated notes issued to capital trusts		80,843
	Accrued expenses and other liabilities		123,103
	Accrued expenses and other liabilities		123,103
	Total liabilities		$	5,192,959
	Total liabilities		$	5,192,959
	Series A preferred stock at $28.82 per share at August 15, 2014		$	115,280
			$	115,280
	Total identifiable net assets less Series A preferred stock		$	639,780
	Total identifiable net assets less Series A preferred stock		$	639,780

	Consideration excluding Series A preferred stock:
	Market value of common stock at $26.49 per share at August 15, 2014 (19,602,482 shares of common stock issued)		$	519,270
			$	519,270
	Cash paid, net		120,510
	Cash paid, net		120,510
Total fair value of consideration, excluding Series A preferred stock		$	639,780
		$	639,780

The Company's Series A preferred stock was valued based upon the closing price of Taylor Capital's Series A preferred stock on August 15, 2014, the last trading day before the merger date.

Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date without a carryover of the related allowance for loan losses. These acquired loans are segregated into three types: pass rated loans with no discount attributable to credit quality, non-impaired loans with a discount attributable at least in part to credit quality and impaired loans with evidence of significant credit deterioration.


•	Pass rated loans (typically performing loans) are accounted for in accordance with ASC 310-20 "Nonrefundable Fees and Other Costs" as these loans do not have evidence of credit deterioration since origination.

•	Non-impaired loans (typically performing substandard loans) are accounted for in accordance with ASC 310-30 if they display at least some level of credit deterioration since origination.

•	Impaired loans (typically substandard loans on non-accrual status) are accounted for in accordance with ASC 310-30 as they display significant credit deterioration since origination.

For pass rated loans (non-purchased credit-impaired loans), the difference between the estimated fair value of the loans (computed on a loan by loan basis) and the principal outstanding is accreted over the remaining life of the loans. We anticipate recording a provision for the acquired portfolio in future quarters related to renewing Taylor Capital loans which will largely offset the accretion from the pass rated loans.

In accordance with ASC 310-30, for both purchased non-impaired loans and purchased impaired loans ("PCI loans"), the difference between contractually required payments at acquisition and the cash flows expected to be collected is referred to as the non-accretable difference. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.

The following table presents the acquired loans as of the acquisition date (in thousands):



		PCI Loans			Non-PCI Loans
Contractually required principal and interest payments		$	217,415		$	3,696,399
Contractually required principal and interest payments		$	217,415		$	3,696,399
Contractually required interest payments not expected to be collected due to estimated prepayments		—			(264,030		)
		—			(264,030		)
Nonaccretable difference		(30,042		)	—
Nonaccretable difference		(30,042		)	—
Cash flows expected to be collected		187,373			3,432,369
Cash flows expected to be collected		187,373			3,432,369
Accretable difference		(3,252		)	(77,186		)
Fair value of acquired loans		$	184,121		$	3,355,183
Fair value of acquired loans		$	184,121		$	3,355,183

The Company recorded $27.2 million and $28.3 million in pre-tax merger related expenses for the three and nine months ended September 30, 2014, respectively, including professional and legal fees of $6.4 million and $6.9 million, respectively, to directly consummate the merger. The remainder of expenses primarily relate to retention and severance compensation costs and service contract termination costs. The data processing systems converted in September 2014.

The following table provides the unaudited pro forma information for the results of operations for the three and nine months ended September 30, 2014 and 2013, as if the acquisition had occurred January 1, 2013. The pro forma results combine the historical results of Taylor Capital into the Company's consolidated statement of income including the impact of certain purchase accounting adjustments including loan discount accretion, investment securities discount accretion, intangible assets amortization, deposit premium accretion and borrowing discount amortization. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1 of each year. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. The merger related expenses that have been recognized are included in net income in the table below.


		Pro Forma
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014		2013
(in thousands)
Total revenues (net interest income plus non-interest income)		$	193,507		$	193,363		$	571,289	$	590,254
		$	193,507		$	193,363		$	571,289	$	590,254
Net income		7,689			43,279			75,697		135,771
Net income		7,689			43,279			75,697		135,771

The pro forma information above excludes the impact of any provision recorded related to renewing Taylor Capital loans. Revenues and earnings of the acquired company since the acquisition date have not been disclosed as Taylor Capital was merged into the Company and separate financial information is not readily available.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2014
Investments Securities [Abstract]	'
Investment Securities	'
	Investment Securities

	Amortized cost and fair value of investment securities were as follows as of the dates indicated (in thousands):



			Amortized			Gross			Gross				Fair
			Cost			Unrealized			Unrealized				Value
						Gains			Losses
	30-Sep-14

	Available for Sale

	U.S. Government sponsored agencies and enterprises		$	64,809		$	1,299		$	(279	)		$	65,829

	States and political subdivisions		391,900			17,330			(197		)		409,033

	Residential mortgage-backed securities		795,554			8,528			(2,142		)		801,940

	Commercial mortgage-backed securities		204,076			1,457			(1,371		)		204,162

	Corporate bonds		265,720			3,204			(1,685		)		267,239

	Equity securities		10,470			—			(23		)		10,447

	Total Available for Sale		1,732,529			31,818			(5,697		)		1,758,650

	Held to Maturity

	States and political subdivisions		760,674			27,774			(351		)		788,097

	Residential mortgage-backed securities		244,675			12,745			—				257,420

	Total Held to Maturity		1,005,349			40,519			(351		)		1,045,517

	Total		$	2,737,878		$	72,337		$	(6,048	)		$	2,804,167

	31-Dec-13

	Available for Sale

	U.S. Government sponsored agencies and enterprises		$	50,486		$	1,704		$	(122	)		$	52,068

	States and political subdivisions		19,398			22			(277		)		19,143

	Residential mortgage-backed securities		696,415			8,555			(3,737		)		701,233

	Commercial mortgage-backed securities		50,891			2,050			—				52,941

	Corporate bonds		284,083			1,597			(2,610		)		283,070

	Equity securities		10,649			—			(192		)		10,457

	Total Available for Sale		1,111,922			13,928			(6,938		)		1,118,912

	Held to Maturity

	States and political subdivisions		932,955			7,584			(4,366		)		936,173

	Residential mortgage-backed securities		249,578			13,178			—				262,756

	Total Held to Maturity		1,182,533			20,762			(4,366		)		1,198,929

Total		$	2,294,455		$	34,690		$	(11,304	)		$	2,317,841



The Company has no direct exposure to the State of Illinois, but approximately 27% of the state and political subdivisions portfolio consisted of securities issued by municipalities located in Illinois as of September 30, 2014. Approximately 92% of such securities were general obligation issues as of September 30, 2014.

During the third quarter of 2014, the Company repositioned its balance sheet subsequent to the Taylor Capital merger and sold certain longer-term and lower-coupon investment securities with an approximate carrying amount of $451.6 million. These investment security sales shortened the overall duration of the investment securities portfolio to pre-merger levels. Also as a part of the balance sheet repositioning, securities of states and political subdivisions with an approximate fair value of $291.2 million were transferred from held to maturity to available for sale during the third quarter of 2014. As a result of the repositioning, the Company recognized a net loss of $3.2 million for the three months ended September 30, 2014.

Unrealized losses on investment securities by length of time in a continuous unrealized loss position and the fair value of the related securities at September 30, 2014 were as follows (in thousands):



		Less Than 12 Months						12 Months or More							Total
		Fair			Unrealized			Fair				Unrealized			Fair		Unrealized
		Value			Losses			Value				Losses			Value		Losses
Available for Sale

U.S. Government sponsored agencies and enterprises		$	14,631		$	(279	)	$	—			$	—		$	14,631	$	(279	)

States and political subdivisions		45,023			(128		)	3,556				(69		)	48,579		(197		)

Residential mortgage-backed securities		325,538			(1,815		)	24,935				(327		)	350,473		(2,142		)

Commercial mortgage-backed securities		154,928			(1,371		)	—				—			154,928		(1,371		)

Corporate bonds		36,654			(207		)	9,875				(1,478		)	46,529		(1,685		)

Equity securities		10,447			(23		)	—				—			10,447		(23		)

Total Available for Sale		587,221			(3,823		)	38,366				(1,874		)	625,587		(5,697		)

Held to Maturity

States and political subdivisions		22,618			(29		)	14,756				(322		)	37,374		(351		)

Total		$	609,839		$	(3,852	)	$	53,122			$	(2,196	)	$	662,961	$	(6,048	)


Unrealized losses on investment securities by length of time in a continuous unrealized loss position and the fair value of the related securities at December 31, 2013 were as follows (in thousands):



		Less Than 12 Months						12 Months or More							Total
		Fair			Unrealized			Fair				Unrealized			Fair		Unrealized
		Value			Losses			Value				Losses			Value		Losses
Available for Sale
U.S. Government sponsored agencies and enterprises		$	18,598		$	(122	)	$	—			$	—		$	18,598	$	(122	)

States and political subdivisions		2,275			(166		)	4,748				(111		)	7,023		(277		)

Residential mortgage-backed securities		232,807			(2,905		)	44,182				(832		)	276,989		(3,737		)

Corporate bonds		122,344			(2,606		)	705				(4		)	123,049		(2,610		)

Equity securities		10,457			(192		)	—				—			10,457		(192		)

Total Available for Sale		386,481			(5,991		)	49,635				(947		)	436,116		(6,938		)

Held to Maturity

States and political subdivisions		235,016			(4,330		)	1,301				(36		)	236,317		(4,366		)

Total		$	621,497		$	(10,321	)	$	50,936			$	(983	)	$	672,433	$	(11,304	)


The total number of security positions in the investment portfolio in an unrealized loss position at September 30, 2014 was 236 compared to 345 at December 31, 2013. Declines in the fair value of available for sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income. In estimating other-than-temporary impairment losses, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) whether or not the Company is more likely than not to sell the security before recovery of its cost basis.

As of September 30, 2014, management does not have the intent to sell any of the securities in the table above and believes that it is more likely than not that the Company will not have to sell any such securities before a recovery of cost. The fair value is expected to recover as the bonds approach their maturity date or repricing date or if market yields for such investments decline. Accordingly, as of September 30, 2014, management believes the impairments detailed in the table above are temporary.

Changes in market interest rates can significantly influence the fair value of securities, and the fair value of our municipal securities portfolio would decline substantially if interest rates increase materially.

Net (losses) gains recognized on investment securities available for sale were as follows (in thousands):



		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014				2013
Realized gains		$	921		$	1		$	1,246			$	15

Realized losses		(4,167		)	—			(4,170		)		(1		)

Impairment charges		—			—			(92		)		—

Net (losses) gains		$	(3,246	)	$	1		$	(3,016	)		$	14


The amortized cost and fair value of investment securities as of September 30, 2014 by contractual maturity are shown below. Maturities may differ from contractual maturities in mortgage-backed securities because the mortgages underlying the securities may be called or repaid without any penalties. Therefore, mortgage-backed securities are not included in the maturity categories in the following maturity summary.



		Amortized			Fair
(In thousands)		Cost			Value
Available for sale:

Due in one year or less		$	5,586		$	5,622

Due after one year through five years		319,903			322,775

Due after five years through ten years		38,026			38,347

Due after ten years		358,914			375,357

Equity securities		10,470			10,447

Residential and commercial mortgage-backed securities		999,630			1,006,102

		1,732,529			1,758,650

Held to maturity:

Due in one year or less		25,437			25,476

Due after one year through five years		252,723			255,282

Due after five years through ten years		106,997			110,693

Due after ten years		375,517			396,646

Residential mortgage-backed securities		244,675			257,420

		1,005,349			1,045,517

Total		$	2,737,878		$	2,804,167


Investment securities with carrying amounts of $1.6 billion and $1.2 billion at September 30, 2014 and December 31, 2013, respectively, were pledged as collateral on public deposits and for other purposes as required or permitted by law, while only $1.1 billion and $908.4 million were required to be pledged at September 30, 2014 and December 31, 2013, respectively. Of those pledged, the Company had investment securities pledged as collateral for advances from the Federal Home Loan Bank of $257.1 million and $29.0 million at September 30, 2014 and December 31, 2013, respectively.

Loans

Loans	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Loans	'
	Loans

	Loans consist of the following at (in thousands):



			September 30,				December 31,
			2014				2013
	Commercial loans		$	3,078,590			$	1,281,377

	Commercial loans collateralized by assignment of lease payments		1,631,660				1,494,188

	Commercial real estate		2,646,895				1,647,700

	Residential real estate		516,873				314,440

	Construction real estate		230,999				141,253

	Indirect vehicle		273,038				262,632

	Home equity		262,977				268,289

	Other consumer loans		69,028				66,952

	Gross loans, excluding purchased credit-impaired and covered loans		8,710,060				5,476,831

	Purchased credit-impaired including covered loans		272,957				235,720

	Total loans		$	8,983,017			$	5,712,551



	Loans are made to individuals as well as commercial and tax exempt entities. Specific loan terms vary as to interest rate, repayment, and collateral requirements based on the type of loan requested and the credit worthiness of the prospective borrower. Except for commercial loans collateralized by assignment of lease payments, credit risk tends to be geographically concentrated in that a majority of the loan customers are located in the markets serviced by MB Financial Bank.

	The Company's extension of credit is governed by its Credit Risk Policy which was established to control the quality of the Company's loans. This policy is reviewed and approved by the Company's Board of Directors on a regular basis.

	Commercial Loans. Commercial credit is extended primarily to middle market customers. Such credits are typically comprised of working capital loans, loans for physical asset expansion, asset acquisition loans and other business loans. Loans to closely held businesses will generally be guaranteed in full or for a significant amount by the businesses' principal owners. Commercial loans are made based primarily on the historical and projected cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not behave as forecasted and collateral securing loans may fluctuate in value due to economic or individual performance factors. Minimum standards and underwriting guidelines have been established for all commercial loan types. Asset-based loans, also included in commercial loans, are made to businesses with the primary source of repayment derived from payments on the related assets securing the loan. Collateral for these loans may include accounts receivable, inventory and equipment, and is monitored regularly to ensure ongoing sufficiency of collateral coverage and quality. The primary risk for these loans is a significant decline in collateral values due to general market conditions. Loan terms that mitigate these risks include typical industry amortization schedules, percentage of collateral coverage, maintenance of cash collateral accounts and regular asset monitoring. Because of the national scope of our asset-based lending, the risk of these loans is also diversified by geography.

	Commercial Loans Collateralized by Assignment of Lease Payments ("Lease Loans"). The Company makes lease loans to both investment grade and non-investment grade companies. Investment grade lessees are companies rated in one of the four highest categories by Moody's Investor Services or Standard & Poor's Rating Services or, in the event the related lessee has not received any such rating, where the related lessee would be viewed under the underwriting polices of the Company as an investment grade company. Whether or not companies fall into this category, each lease loan is considered on its individual merit based on financial information available at the time of underwriting.

	Commercial Real Estate Loans. Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans. These loans are viewed primarily as cash flow loans and the repayment of these loans is largely dependent on the successful operation of the property. Loan performance may be adversely affected by factors impacting the general economy or conditions specific to the real estate market such as geographic location and/or property type.

	Construction Real Estate Loans. The Company defines construction loans as loans where the loan proceeds are controlled by the Company and used exclusively for the improvement of real estate in which the Company holds a mortgage. Due to the inherent risk in this type of loan, they are subject to other industry specific policy guidelines outlined in the Company's Credit Risk Policy.

	Consumer Related Loans. The Company originates direct and indirect consumer loans, including primarily residential real estate, home equity lines and loans, credit cards, and indirect vehicle loans (motorcycle, powersports, recreational and marine vehicles), using a matrix-based credit analysis as part of the underwriting process. Each loan type has a separate matrix which consists of several factors including debt to income, type of collateral and loan to collateral value, credit history and Company relationship with the borrower. Indirect loan and credit card underwriting involves the use of risk-based pricing in the underwriting process.

	A collateral pledge agreement exists whereby at all times, the Company must keep on hand, free of all other pledges, liens, and encumbrances, first mortgage loans and home equity loans with unpaid principal balances aggregating no less than 133% for first mortgage loans and 250% for home equity loans of the outstanding advances from the Federal Home Loan Bank. As of September 30, 2014 and December 31, 2013, the Company had $1.7 billion and $835.1 million, respectively, of loans pledged as collateral for long-term Federal Home Loan Bank advances and third party letters of credit, while only $760.5 million and $518.4 million were required to be pledged at September 30, 2014 and December 31, 2013, respectively.

	The following table presents the contractual aging of the recorded investment in past due loans by class of loans as of September 30, 2014 and December 31, 2013 (in thousands):



			Current				30-59 Days				60-89 Days				Loans Past Due			Total			Total
							Past Due				Past Due				90 Days or More			Past Due
	30-Sep-14

	Commercial		$	3,071,130			$	5,804			$	653			$	1,003		$	7,460		$	3,078,590

	Commercial collateralized by assignment of lease payments		1,621,904				2,102				5,506				2,148			9,756			1,631,660

	Commercial real estate

	Healthcare		347,189				—				—				—			—			347,189

Industrial		345,865				123				—				8,018			8,141			354,006

Multifamily		416,171				386				298				1,192			1,876			418,047

Retail		432,324				2,762				—				3,484			6,246			438,570

Office		274,508				383				—				2,717			3,100			277,608

Other		806,688				971				324				3,492			4,787			811,475

Residential real estate		502,516				4,119				2,648				7,590			14,357			516,873

Construction real estate		230,662				—				—				337			337			230,999

Indirect vehicle		270,179				1,673				879				307			2,859			273,038

Home equity		251,397				2,158				1,335				8,087			11,580			262,977

Other consumer		69,009				14				2				3			19			69,028

Gross loans, excluding purchased credit-impaired and covered loans		8,639,542				20,495				11,645				38,378			70,518			8,710,060

Purchased credit-impaired including covered loans		166,364				3,909				2,464				100,220			106,593			272,957

Total loans		$	8,805,906			$	24,404			$	14,109			$	138,598		$	177,111		$	8,983,017

Non-performing loan aging		$	55,649			$	5,716			$	1,354			$	37,542		$	44,612		$	100,261

31-Dec-13

Commercial		$	1,273,302			$	5,952			$	626			$	1,497		$	8,075		$	1,281,377

Commercial collateralized by assignment of lease payments		1,489,391				3,841				656				300			4,797			1,494,188

Commercial real estate

Healthcare		213,665				—				—				3,064			3,064			216,729

Industrial		372,975				5,465				—				1,404			6,869			379,844

Multifamily		302,456				3,078				181				2,226			5,485			307,941

Retail		334,198				328				2,816				7,258			10,402			344,600

Office		155,936				—				—				2,066			2,066			158,002

Other		233,464				4,898				259				1,963			7,120			240,584

Residential real estate		302,362				1,422				1,030				9,626			12,078			314,440

Construction real estate		138,563				391				—				2,299			2,690			141,253

Indirect vehicle		259,488				2,210				657				277			3,144			262,632

Home equity		257,219				1,725				2,165				7,180			11,070			268,289

Other consumer		66,866				81				1				4			86			66,952

Gross loans, excluding covered loans		5,399,885				29,391				8,391				39,164			76,946			5,476,831

Covered loans		135,717				902				3,346				95,755			100,003			235,720

Total loans		$	5,535,602			$	30,293			$	11,737			$	134,919		$	176,949		$	5,712,551

Non-performing loan aging		$	56,339			$	14,325			$	3,283			$	32,614		$	50,222		$	106,561




The following table presents the recorded investment in non-accrual loans and loans past due ninety days or more and still accruing by class of loans, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



		September 30, 2014								December 31, 2013
						Loans past due								Loans past due
		Non-accrual				90 days or more				Non-accrual				90 days or more
						and still accruing								and still accruing
Commercial		$	18,711			$	134			$	17,781			$	—

Commercial collateralized by assignment of lease payments		2,402				1,738				4,276				291

Commercial real estate:

Healthcare		—				—				3,064				—

Industrial		11,029				240				15,265				155

Multifamily		6,968				—				5,145				—

Office		5,433				—				11,703				—

Retail		3,493				—				2,969				—

Other		15,100				569				19,991				—

Residential real estate		16,815				—				13,009				—

Construction real estate		337				—				475				—

Indirect vehicle		1,652				—				1,459				—

Home equity		15,635				—				10,969				—

Other consumer		5				—				9				—

Total		$	97,580			$	2,681			$	106,115			$	446


The increase in non-performing residential real estate loans relates to a group of restructured loans that are less than 90 days past due that are now reported as non-performing.

The Company utilizes an internal asset classification system as a means of reporting problem and potential problem loans. Under the Company's risk rating system, the Company classifies potential problem and problem loans as “Special Mention,” “Substandard,” and “Doubtful.” Substandard loans include those characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loans classified as Doubtful have all the weaknesses inherent in those classified as Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Loans that do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories but possess weaknesses that deserve management's close attention are deemed to be Special Mention. Risk ratings are updated at least annually and any time the situation warrants.

Loans listed as not rated are included in groups of homogeneous loans with similar risk and loss characteristics. The following tables present the risk category of loans by class of loans based on the most recent analysis performed, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



		Pass				Special				Substandard				Doubtful			Total
						Mention
30-Sep-14

Commercial		$	2,887,706			$	148,275			$	42,609			$	—		$	3,078,590

Commercial collateralized by assignment of lease payments		1,626,794				51				4,815				—			1,631,660

Commercial real estate

Healthcare		347,189				—				—				—			347,189

Industrial		326,390				6,970				20,646				—			354,006

Multifamily		409,901				390				7,756				—			418,047

Retail		423,436				1,608				13,526				—			438,570

Office		266,644				2,573				8,391				—			277,608

Other		784,978				9,411				17,086				—			811,475

Construction real estate		224,884				5,778				337				—			230,999

Total		$	7,297,922			$	175,056			$	115,166			$	—		$	7,588,144

31-Dec-13

Commercial		$	1,193,114			$	26,637			$	61,000			$	626		$	1,281,377

Commercial collateralized by assignment of lease payments		1,486,899				553				6,736				—			1,494,188

Commercial real estate

Healthcare		189,705				21,186				2,774				3,064			216,729

Industrial		345,236				5,328				29,280				—			379,844

Multifamily		296,179				342				11,420				—			307,941

Retail		316,420				10,660				17,520				—			344,600

Office		151,393				2,682				3,927				—			158,002

Other		217,188				349				23,047				—			240,584

Construction real estate		139,847				540				866				—			141,253

Total		$	4,335,981			$	68,277			$	156,570			$	3,690		$	4,564,518


Approximately $63.5 million and $80.7 million of the substandard and doubtful loans were non-performing as of September 30, 2014 and December 31, 2013, respectively.

For residential real estate, home equity, indirect vehicle and other consumer loan classes, the Company also evaluates credit quality based on the aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in those loan classes based on payment activity, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



		Performing				Non-performing				Total
30-Sep-14

Residential real estate		$	500,058			$	16,815			$	516,873

Indirect vehicle		271,386				1,652				273,038

Home equity		247,342				15,635				262,977

Other consumer		69,023				5				69,028

Total		$	1,087,809			$	34,107			$	1,121,916

31-Dec-13

Residential real estate		$	301,431			$	13,009			$	314,440

Indirect vehicle		261,173				1,459				262,632

Home equity		257,320				10,969				268,289

Other consumer		66,943				9				66,952

Total		$	886,867			$	25,446			$	912,313


The following tables present loans individually evaluated for impairment by class of loans, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



		30-Sep-14
																	Three Months Ended						Nine Months Ended
		Unpaid				Recorded				Partial				Allowance for			Average			Interest			Average			Interest
		Principal				Investment				Charge-offs				Loan Losses			Recorded			Income			Recorded			Income
		Balance												Allocated			Investment			Recognized			Investment			Recognized
With no related allowance recorded:

Commercial		$	14,719			$	14,130			$	589			$	—		$	14,936		$	—		$	10,542		$	—

Commercial collateralized by assignment of lease payments		1,857				1,857				—				—			2,026			31			2,542			81

Commercial real estate:

Healthcare		—				—				—				—			—			—			—			—

Industrial		11,505				8,388				3,117				—			8,844			—			8,407			—

Multifamily		2,409				2,409				—				—			2,492			7			1,963			45

Retail		3,950				2,730				1,220				—			2,193			—			4,353			—

Office		2,339				1,546				793				—			1,580			—			1,507			—

Other		14,190				14,149				41				—			14,978			—			6,506			—

Residential real estate		1,941				1,941				—				—			1,899			—			3,023			—

Construction real estate		—				—				—				—			—			—			45			—

Indirect vehicle		—				—				—				—			—			—			—			—

Home equity		577				577				—				—			577			—			824			—

Other consumer		—				—				—				—			—			—			—			—

With an allowance recorded:

Commercial		4,720				4,720				—				2,250			5,353			—			16,266			—

Commercial collateralized by assignment of lease payments		4,354				4,354				—				238			3,725			58			1,772			82

Commercial real estate:

Healthcare		—				—				—				—			—			—			—			—

Industrial		3,047				3,042				5				333			3,140			—			6,482			—

Multifamily		6,644				5,673				971				1,311			6,335			18			6,467			123

Retail		10,181				7,797				2,384				690			8,637			—			8,232			—

Office		2,298				1,946				352				576			2,186			—			2,532			—

Other		1,482				1,397				85				243			1,674			4			10,135			12

Residential real estate		16,361				13,870				2,491				3,196			14,646			—			14,549			—

Construction real estate		2,707				337				2,370				161			431			—			463			—

Indirect vehicle		336				212				124				27			391			—			336			—

Home equity		26,592				24,985				1,607				1,690			25,771			—			25,346			—

Other consumer		—				—				—				—			—			—			—			—

Total		$	132,209			$	116,060			$	16,149			$	10,715		$	121,814		$	118		$	132,292		$	343





		31-Dec-13
		Unpaid				Recorded				Partial				Allowance for			Average			Interest
		Principal				Investment				Charge-offs				Loan Losses			Recorded			Income
		Balance												Allocated			Investment			Recognized
With no related allowance recorded:

Commercial		$	8,903			$	8,903			$	—			$	—		$	8,259		$	—

Commercial collateralized by assignment of lease payments		3,401				3,401				—				—			1,030			6

Commercial real estate:

Healthcare		—				—				—				—			2,698			—

Industrial		7,560				7,560				—				—			8,900			—

Multifamily		1,166				1,166				—				—			758			11

Retail		4,466				4,466				—				—			3,628			—

Office		559				527				32				—			922			—

Other		2,963				2,963				—				—			4,380			—

Residential real estate		4,234				4,234				—				—			3,260			—

Construction real estate		—				—				—				—			—			—

Indirect vehicle		—				—				—				—			—			—

Home equity		577				577				—				—			797			—

Other consumer		—				—				—				—			—			—

With an allowance recorded:

Commercial		8,923				8,919				4				4,284			13,476			4

Commercial collateralized by assignment of lease payments		1,060				1,060				—				144			1,279			192

Commercial real estate:

Healthcare		3,186				3,064				122				382			8,189			—

Industrial		7,707				7,705				2				3,038			3,699			—

Multifamily		5,374				5,374				—				1,661			6,443			340

Retail		14,169				12,428				1,741				1,511			12,885			280

Office		2,442				2,442				—				791			4,045			—

Other		20,367				17,029				3,338				796			12,868			20

Residential real estate		13,496				12,710				786				3,119			12,966			245

Construction real estate		475				475				—				227			1,603			—

Indirect vehicle		173				123				50				57			86			—

Home equity		23,840				23,395				445				1,358			24,283			772

Other consumer		—				—				—				—			—			—

Total		$	135,041			$	128,521			$	6,520			$	17,368		$	136,454		$	1,870


Impaired loans included accruing restructured loans of $16.9 million and $29.4 million that have been modified and are performing in accordance with those modified terms as of September 30, 2014 and December 31, 2013, respectively. In addition, impaired loans included $22.4 million and $25.0 million of non-performing, restructured loans as of September 30, 2014 and December 31, 2013, respectively.

Loans may be restructured in an effort to maximize collections from financially distressed borrowers. We use various restructuring techniques, including, but not limited to, deferring past due interest or principal, implementing an A/B note structure, redeeming past due taxes, reducing interest rates, extending maturities and modifying amortization schedules. Residential real estate loans are restructured in an effort to minimize losses while allowing borrowers to remain in their primary residences when possible. Programs that we offer to residential real estate borrowers include the Home Affordable Refinance Program (“HARP”), a restructuring program similar to the Home Affordable Modification Program (“HAMP”) for first mortgage borrowers, the Second Lien Modification Program (“2MP”) and similar programs for home equity borrowers in keeping with the restructuring techniques discussed above.

Periodically, the Company will restructure a note into two separate notes (A/B structure), charging off the entire B portion of the note. The A note is structured with appropriate loan-to-value and cash flow coverage ratios that provide for a high likelihood of repayment. The A note is classified as a non-performing note until the borrower has displayed a historical payment performance for a reasonable time prior to and subsequent to the restructuring. A period of sustained repayment for at least six months generally is required to return the note to accrual status provided that management has determined that the performance is reasonably expected to continue. The A note will be classified as a restructured note (either performing or non-performing) through the calendar year of the restructuring that the historical payment performance has been established. As of September 30, 2014 and December 31, 2013, there was approximately $1.1 million in recorded investment in relation to one A/B structure.

A loan classified as a troubled debt restructuring will no longer be included in the troubled debt restructuring disclosures in the years after the restructuring if the loan performs in accordance with the terms specified by the restructuring agreement and the interest rate specified in the restructuring agreement represents a market rate at the time of modification. The specified interest rate is considered a market rate when the interest rate is equal to or greater than the rate the Company is willing to accept at the time of restructuring for a new loan with comparable risk. If there are concerns that the borrower will not be able to meet the modified terms of the loan, the loan will continue to be included in the troubled debt restructuring disclosures.

Impairment analyses on commercial-related loans classified as troubled debt restructurings are performed in conjunction with the normal allowance for loan loss process. Consumer loans classified as troubled debt restructurings are aggregated in two pools that share common risk characteristics, home equity and residential real estate loans, with impairment measured on a quarterly basis based on the present value of expected future cash flows discounted at the loan's effective interest rate.

The following table presents loans that have been restructured during the three months ended September 30, 2014 (dollars in thousands):



		30-Sep-14
		Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
		Loans		Investment				Investment				Specific Reserves
Non-Performing:

Residential real estate		2		$	411			$	411			$	246

Indirect vehicle		15		95				95				38

Home equity		6		604				604				104

Total		23		$	1,110			$	1,110			$	388


The following table presents loans that have been restructured during the nine months ended September 30, 2014 (dollars in thousands):


		30-Sep-14
		Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
		Loans		Investment				Investment				Specific Reserves
Performing:

Indirect vehicle		1		$	5			$	5			$	—

Home equity		6		1,883				1,883				—

Total		7		$	1,888			$	1,888			$	—

Non-Performing:

Commercial		1		$	263			$	263			$	85

Commercial real estate:

Multifamily		1		158				158				40

Residential real estate		6		1,850				1,850				246

Indirect vehicle		44		262				262				65

Home equity		13		1,667				1,667				104

Total		65		$	4,200			$	4,200			$	540

The following table presents loans that have been restructured during the three months ended September 30, 2013 (dollars in thousands):



		30-Sep-13
		Number of			Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
		Loans			Investment				Investment				Specific Reserves
Performing:

Residential real estate		1			$	95			$	95			$	—

Home equity		1			19				19				—

Total		2			$	114			$	114			$	—

Non-Performing:

Commercial real estate:

Healthcare		1			$	3,164			$	3,164			$	496

Multifamily		1			436				436				119

Retail		1			205				205				56

Residential real estate		1			394				394				—

Indirect vehicle		17			113				89				24

Home equity		5			397				397				—

Total		26			$	4,709			$	4,685			$	695


The following table presents loans that have been restructured during the nine months ended September 30, 2013 (dollars in thousands):



		30-Sep-13
		Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
		Loans		Investment				Investment				Specific Reserves
Performing:

Multifamily		1		$	601			$	601			$	—

Residential real estate		5		854				854				—

Home equity		7		723				723				—

Total		13		$	2,178			$	2,178			$	—

Non-Performing:

Commercial		2		$	1,251			$	1,251			$	673

Commercial real estate:
Healthcare		1		3,164				3,164				496

Industrial		4		2,570				2,570				1,425

Multifamily		2		623				623				169

Retail		3		862				862				235

Other		1		84				84				23

Residential real estate		6		1,149				1,149				—

Indirect vehicle		20		127				103				24

Home equity		25		3,333				3,333				—

Total		64		$	13,163			$	13,139			$	3,045


Of the troubled debt restructurings entered into during the past twelve months, none subsequently defaulted during the nine months ended September 30, 2014. Performing troubled debt restructurings are considered to have defaulted when they become 90 days or more past due post restructuring or are placed on non-accrual status.

The following tables present the troubled debt restructurings activity during the nine months ended September 30, 2014 (in thousands):


		Performing				Non-performing
Beginning balance		$	29,430			$	24,952

Additions		1,888				4,200

Charge-offs		(368		)		(2,147		)
Principal payments, net		(2,436		)		(3,829		)
Removals		(8,573		)		(3,572		)
Transfer to other real estate owned		—				(221		)

Transfer from/to performing		6,292				9,356

Transfer from/to non-performing		(9,356		)		(6,292		)
Ending balance		$	16,877			$	22,447


Approximately $6.3 million of non-performing troubled debt restructurings were transferred to performing status. A majority of these loans were identified as non-performing troubled debt restructurings during the first half of 2013 and have performed in accordance with the modified terms. The loans continue to be reported as performing troubled debt restructurings. The loans transferred to non-performing in the table above were restructured in 2011 and 2012. Loans removed from troubled debt restructuring status are those that were restructured in a previous calendar year at a market rate of interest and have performed in compliance with the modified terms.

The following table presents the type of modification for loans that have been restructured during the nine months ended September 30, 2014 (in thousands):


	30-Sep-14

	Extended				Extended
	Maturity,				Maturity and				Delay in
	Amortization				Delay in Payments				Payments or
	and Reduction				or Reduction of				Reduction of
	of Interest Rate				Interest Rate				Interest Rate				Total
Commercial	$	—			$	263			$	—			$	263

Commercial real estate:
Multifamily	—				158				—				158

Residential real estate	411				1,269				170				1,850

Indirect vehicle	—				—				267				267

Home equity	1,793				1,210				547				3,550

Total	$	2,204			$	2,900			$	984			$	6,088


The following table presents the activity in the allowance for credit losses, balance in allowance for credit losses and recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2014 and 2013 (in thousands):



		Commercial				Commercial				Commercial				Residential			Construction			Indirect			Home			Other consumer			Unfunded			Total
						collateralized by				real estate				real estate			real estate			vehicle			equity						commitments
						assignment of
						lease payments
30-Sep-14

Allowance for credit losses:

Three Months Ended
Beginning balance		$	23,154			$	9,425			$	43,933			$	7,495		$	4,613		$	1,727		$	8,281		$	2,282		$	2,995		$	103,905

Allowance for unfunded credit commitments acquired through business combination		—				—				—				—			—			—			—			—			1,261			1,261

Utilization of allowance for unfunded credit commitments		—				—				—				—			—			—			—			—			(637		)	(637		)

Charge-offs		606				—				1,027				740			5			1,043			566			497			—			4,484

Recoveries		564				425				2,227				4			25			402			46			65			—			3,758

Provision		2,181				(484		)		(4,193		)		534			2,174			643			1,836			(65		)	483			3,109

Ending balance		$	25,293			$	9,366			$	40,940			$	7,293		$	6,807		$	1,729		$	9,597		$	1,785		$	4,102		$	106,912


Nine Months Ended
Beginning balance		$	23,461			$	9,159			$	51,628			$	8,872		$	6,856		$	1,662		$	8,478		$	1,630		$	1,716		$	113,462

Allowance for unfunded credit commitments acquired through business combination		—				—				—				—			—			—			—			—			1,261			1,261

Utilization of allowance for unfunded credit commitments		—				—				—				—			—			—			—			—			(637		)	(637		)

Charge-offs		1,142				40				9,910				1,438			75			2,546			2,002			1,582			—			18,735

Recoveries		2,888				555				3,279				529			201			1,283			306			211			—			9,252

Provision		86				(308		)		(4,057		)		(670		)	(175		)	1,330			2,815			1,526			1,762			2,309

Ending balance		$	25,293			$	9,366			$	40,940			$	7,293		$	6,807		$	1,729		$	9,597		$	1,785		$	4,102		$	106,912

Ending allowance balance attributable to loans:

Individually evaluated for impairment		$	2,250			$	238			$	3,153			$	3,196		$	161		$	27		$	1,690		$	—		$	1,316		$	12,031

Collectively evaluated for impairment		22,433				9,128				37,156				4,097			6,641			1,702			7,907			1,785			2,786			93,635

Acquired and accounted for under ASC 310-30 (1)		610				—				631				—			5			—			—			—			—			1,246

Total ending allowance balance		$	25,293			$	9,366			$	40,940			$	7,293		$	6,807		$	1,729		$	9,597		$	1,785		$	4,102		$	106,912

Loans:

Individually evaluated for impairment		$	18,850			$	6,211			$	49,077			$	15,811		$	337		$	212		$	25,562		$	—		$	—		$	116,060

Collectively evaluated for impairment		3,059,740				1,625,449				2,597,818				501,062			230,662			272,826			237,415			69,028			—			8,594,000

Acquired and accounted for under ASC 310-30 (1)		112,066				—				110,357				3,362			24,274			—			115			22,783			—			272,957

Total ending loans balance		$	3,190,656			$	1,631,660			$	2,757,252			$	520,235		$	255,273		$	273,038		$	263,092		$	91,811		$	—		$	8,983,017




		Commercial				Commercial				Commercial				Residential			Construction			Indirect			Home			Other consumer			Unfunded			Total
						collateralized by				real estate				real estate			real estate			vehicle			equity						commitments
						assignment of
						lease payments
30-Sep-13

Allowance for credit losses:

Three Months Ended
Beginning balance		$	27,277			$	8,529			$	60,014			$	8,121		$	8,695		$	1,537		$	8,206		$	1,306		$	1,812		$	125,497

Transfer to (from) allowance for unfunded credit commitments		—				—				—				—			—			—			—			—			—			—

Charge-offs		1,686				—				1,236				713			26			572			437			485			—			5,155

Recoveries		579				—				966				48			420			372			228			74			—			2,687

Provision		(45		)		721				(3,983		)		347			(735		)	293			(152		)	368			(118		)	(3,304		)

Ending balance		$	26,125			$	9,250			$	55,761			$	7,803		$	8,354		$	1,630		$	7,845		$	1,263		$	1,694		$	119,725


Nine Months Ended
Beginning balance		$	24,943			$	7,755			$	61,056			$	6,941		$	11,222		$	1,324		$	9,401		$	1,562		$	4,075		$	128,279

Transfer to (from) allowance for unfunded credit commitments		—				—				—				—			500			—			—			—			(500		)	—

Charge-offs		3,030				—				5,131				2,074			855			1,930			2,547			1,501			—			17,068

Recoveries		1,808				1,131				5,353				461			827			1,111			442			185			—			11,318

Provision		2,404				364				(5,517		)		2,475			(3,340		)	1,125			549			1,017			(1,881		)	(2,804		)

Ending balance		$	26,125			$	9,250			$	55,761			$	7,803		$	8,354		$	1,630		$	7,845		$	1,263		$	1,694		$	119,725

Ending allowance balance attributable to loans:

Individually evaluated for impairment		$	4,389			$	285			$	7,464			$	3,033		$	240		$	—		$	781		$	—		$	657		$	16,849

Collectively evaluated for impairment		20,871				8,965				46,412				4,663			8,114			1,630			7,064			1,263			1,037			100,019

Acquired and accounted for under ASC 310-30 (1)		865				—				1,885				107			—			—			—			—			—			2,857

Total ending allowance balance		$	26,125			$	9,250			$	55,761			$	7,803		$	8,354		$	1,630		$	7,845		$	1,263		$	1,694		$	119,725


Loans:

Individually evaluated for impairment		$	19,836			$	2,330			$	60,600			$	15,851		$	1,622		$	106		$	23,278		$	—		$	—		$	123,623

Collectively evaluated for impairment		1,134,376				1,466,484				1,577,768				291,699			134,524			257,634			251,206			57,418			—			5,171,109

Acquired and accounted for under ASC 310-30 (1)		35,649				—				159,799				5,982			61,446			—			110			29,014			—			292,000

Total ending loans balance		$	1,189,861			$	1,468,814			$	1,798,167			$	313,532		$	197,592		$	257,740		$	274,594		$	86,432		$	—		$	5,586,732


(1) Loans acquired in business combinations and accounted for under ASC Subtopic 310-30 “Receivables — Loans and Debt Securities Acquired with Deteriorated Credit Quality.”

Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date without a carryover of the related allowance for loan losses. These acquired loans are segregated into three types: pass rated loans with no discount attributable to credit quality, non-impaired loans with a discount attributable at least in part to credit quality and impaired loans with evidence of significant credit deterioration.


•	Pass rated loans (typically performing loans) are accounted for in accordance with ASC 310-20 "Nonrefundable Fees and Other Costs" as these loans do not have evidence of credit deterioration since origination.

•	Non-impaired loans (typically performing substandard loans) are accounted for in accordance with ASC 310-30 if they display at least some level of credit deterioration since origination.

•	Impaired loans (typically substandard loans on non-accrual status) are accounted for in accordance with ASC 310-30 as they display significant credit deterioration since origination.

For pass rated loans (non-purchased credit-impaired loans), the difference between the estimated fair value of the loans (computed on a loan by loan basis) and the principal outstanding is accreted over the remaining life of the loans. We anticipate recording a provision for the acquired portfolio in future quarters related to renewing Taylor loans which will largely offset the accretion from the pass rated loans.

In accordance with ASC 310-30, for both purchased non-impaired loans and purchased impaired loans ("PCI loans"), the difference between contractually required payments at acquisition and the cash flows expected to be collected is referred to as the non-accretable difference. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.

Substantially all of the loans acquired in transactions with the FDIC displayed at least some level of credit deterioration and as such are included as non-impaired and impaired loans as described immediately above.

During the nine months ended September 30, 2014 there was a negative provision for credit losses of $904 thousand and net charge-offs of $83 thousand, in relation to 16 pools of purchased loans with a total carrying amount of $94.8 million as of September 30, 2014. There was $1.2 million and $2.2 million in allowance for loan losses related to these purchased loans at September 30, 2014 and December 31, 2013, respectively. The provision for credit losses and accompanying charge-offs are included in the table above.

Changes in the accretable yield for loans acquired and accounted for under ASC 310-30 were as follows for the three and nine months ended September 30, 2014 and 2013 (in thousands):



		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2014				2013				2014				2013
Balance at beginning of period		$	1,218			$	6,360			$	2,337			$	5,685

Purchases		3,252				—				3,252				—

Accretion		2,372				(2,427		)		679				(2,859		)

Other		931				—				1,505				1,107

Balance at end of period		$	7,773			$	3,933			$	7,773			$	3,933


An interest recovery was recognized in the third quarter of 2014 on a covered loan.

In our FDIC-assisted transactions, the fair value of purchased impaired loans, on the acquisition date, was determined based on assigned risk ratings, expected cash flows and the fair value of loan collateral. The fair value of loans that were non-impaired was determined based on estimates of losses on defaults and other market factors. Due to the loss-share agreements with the FDIC, we recorded a receivable (FDIC indemnification asset) from the FDIC equal to the present value of the corresponding reimbursement percentages on the estimated losses embedded in the loan portfolio.

When cash flow estimates are adjusted downward for a particular loan pool, the FDIC indemnification asset is increased. An allowance for loan losses is established for the impairment of the loans. A provision for loan losses is recognized for the difference between the increase in the FDIC indemnification asset and the decrease in cash flows.

When cash flow estimates are adjusted upward for a particular loan pool, the FDIC indemnification asset is decreased. The difference between the decrease in the FDIC indemnification asset and the increase in cash flows is accreted over the estimated life of the loan pool.

When cash flow estimates are adjusted downward for covered foreclosed real estate, the FDIC indemnification asset is increased. A charge is recognized for the difference between the increase in the FDIC indemnification asset and the decrease in cash flows.

When cash flow estimates are adjusted upward for covered foreclosed real estate, the FDIC indemnification asset is decreased. Any write-down after the transfer to covered foreclosed real estate is reversed.

In both scenarios, the clawback liability (the amount the FDIC requires us to pay back if certain thresholds are met) will increase or decrease accordingly.

For other loans acquired through a business combinations, the fair value of purchased impaired loans, on the acquisition date, was determined based on assigned risk ratings, expected cash flows and the fair value of loan collateral. The fair value of loans that were non-impaired was determined based on estimates of losses on defaults and other market factors.


The carrying amount of loans acquired through a business combination by loan type are as follows (in thousands):



30-Sep-14		Purchased				Purchased Non-Impaired				Total
		Impaired				Loans
		Loans
Covered loans:

Commercial related (1)		$	1,410			$	2,255			$	3,665

Commercial		827				1,308				2,135

Commercial real estate		32,857				23,531				56,388

Construction real estate		—				3,164				3,164

Other		1,655				22,240				23,895

Total covered loans		$	36,749			$	52,498			$	89,247

Estimated (payable) receivable amount from the FDIC under the loss-share agreement (2)		$	(2,892	)		$	4,866			$	1,974

Non-covered loans:

Commercial related (3)		$	4,856			$	12,913			$	17,769

Commercial loans		101,410				1,736,188				1,837,598

Commercial loans collateralized by assignment of lease payments		—				133,539				133,539

Commercial real estate		53,969				1,002,229				1,056,198

Construction real estate		21,110				161,115				182,225

Other		2,365				237,737				240,102

Total non-covered loans		$	183,710			$	3,283,721			$	3,467,431



-1	Covered commercial related loans include commercial, commercial real estate and construction real estate loans acquired in connection with the Benchmark FDIC-assisted transactions.

-2	Estimated reimbursable amounts from the FDIC under the loss-share agreement exclude $231 thousand in amounts due to the FDIC related to covered other real estate owned.

-3	Non-covered commercial related loans include commercial, commercial real estate and construction real estate for InBank and Heritage.

Outstanding balances on purchased loans from the FDIC were $114.0 million and $268.5 million as of September 30, 2014 and December 31, 2013, respectively. The related carrying amount on loans purchased from the FDIC was $109.1 million and $256.4 million as of September 30, 2014 and December 31, 2013, respectively.

Effective April 1, 2014, the losses on commercial related loans (commercial, commercial real estate and construction real estate) acquired in connection with the Heritage FDIC-assisted transaction ceased being covered under the loss-share agreement for that transaction. The carrying amount of those loans was $3.9 million as of September 30, 2014. Any recoveries, net of expenses, received on commercial related loans on which losses were incurred prior to April 1, 2014 will continue to be covered (and any such net recoveries must be shared with the FDIC in accordance with the loss-share agreement) through March 31, 2017. The losses on consumer related loans acquired in connection with the Heritage FDIC-assisted transaction will continue to be covered under the loss-share agreement through March 31, 2019.

The losses on commercial related loans acquired in connection with the Benchmark FDIC-assisted transaction will cease to be covered under the loss-share agreement for that transaction effective January 1, 2015. Effective July 1, 2015, the losses on commercial related loans acquired in connection with Broadway and New Century FDIC-assisted transactions will cease to be covered under the loss-share agreements for those transactions. Any recoveries, net of expenses, received on commercial related loans on which losses were incurred prior to January 1, 2015 and July 1, 2015, for the respective transactions, will continue to be covered (and any such net recoveries must be shared with the FDIC in accordance with the loss-share agreements) through December 31, 2017 and June 30, 2018 for the Benchmark FDIC-assisted transaction and Broadway and New Century FDIC-assisted transactions, respectively. The losses on consumer related loans acquired in connection with the Benchmark FDIC-assisted transaction and Broadway and New Century FDIC-assisted transactions will continue to be covered under the loss-share agreements through December 31, 2019 and June 30, 2020, respectively.

Goodwill_and_Intangibles

Goodwill and Intangibles	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangibles	'
	Goodwill and Intangibles

	The excess of the cost of an acquisition over the fair value of the net assets acquired, including core deposit and client relationship intangibles, consists of goodwill. Under ASC Topic 350, goodwill is subject to at least annual assessments for impairment by applying a fair value based test. The Company reviews goodwill to determine potential impairment annually, or more frequently if events and circumstances indicate that goodwill might be impaired, by comparing the carrying value of the reporting units with the fair value of the reporting units.

	The Company's annual assessment date is as of December 31. Goodwill is tested for impairment at the reporting unit level. The Company has three reporting units: banking, leasing and mortgage banking. No impairment losses were recognized during the three or nine months ended September 30, 2014 or 2013. The carrying amount of goodwill was $698.9 million at September 30, 2014 and $423.4 million at December 31, 2013. The increase of $275.6 million in goodwill was due to the Taylor Capital merger.

	The Company has other intangible assets consisting of core deposit and client relationship intangibles that had a remaining weighted average amortization period of approximately five years as of September 30, 2014. The Company recognized a $25.0 million core deposit intangible in the third quarter of 2014 due to the Taylor Capital merger

	The following table presents the changes in the carrying amount of core deposit and client relationship intangibles, gross carrying amount, accumulated amortization, and net book value as of September 30, 2014 (in thousands):



		Nine Months Ended
		September 30, 2014
	Balance at beginning of period	$	23,428

	Amortization expense	(3,884		)
	Other intangibles from business combination	25,000

	Balance at end of period	$	44,544


	Gross carrying amount	$	79,368

	Accumulated amortization	(34,824		)
	Net book value	$	44,544


	The following presents the estimated future amortization expense of other intangible assets (in thousands):



	Year ending December 31,	Amount
	2014	$	2,114

	2015	7,197

	2016	6,162

	2017	5,450

	2018	4,874

	Thereafter	18,747

		$	44,544

Deposits

Deposits	9 Months Ended
	Sep. 30, 2014
Deposits [Abstract]	'
Deposits	'
	Deposits

	The composition of deposits was as follows (in thousands):



		September 30,		December 31,
		2014		2013
	Demand deposit accounts, noninterest bearing	$	3,807,554	$	2,375,863

	NOW and money market accounts	4,197,166		2,682,419

	Savings accounts	931,985		855,394

	Certificates of deposit, $100,000 or more	1,544,267		827,413

	Other certificates of deposit	757,576		640,170

	Total	$	11,238,548	$	7,381,259


	Certificates of deposit of $100,000 or more included $655.8 million and $224.2 million of brokered deposits at September 30, 2014 and December 31, 2013, respectively. Brokered deposits typically consist of smaller individual time certificates that have the same liquidity characteristics and yields consistent with time certificates of $100,000 or more.

ShortTerm_Borrowings

Short-Term Borrowings	9 Months Ended
	Sep. 30, 2014
Short-term Debt [Abstract]	'
Short-Term Borrowings	'
	Short-Term Borrowings

	Short-term borrowings were as follows as of September 30, 2014 and December 31, 2013 (dollars in thousands):



		30-Sep-14				31-Dec-13
		Weighted Average Cost		Amount		Weighted Average Cost		Amount
	Customer repurchase agreements	0.21	%	$	248,150	0.2	%	$	193,389

	Federal Home Loan Bank advances	0.07		350,000		0.17		300,000

	Federal funds purchased	0.45		54,010		—		—

	Line of credit	2		15,000		—		—

		0.2	%	$	667,160	0.18	%	$	493,389


	Securities sold under agreements to repurchase are agreements in which the Company acquires funds by selling assets to another party under a simultaneous agreement to repurchase the same assets at a specified price and date. The Company enters into repurchase agreements and also offers a demand deposit account product to customers that sweeps their balances in excess of an agreed upon target amount into overnight repurchase agreements. All securities sold under agreements to repurchase are recorded on the face of the balance sheet.

	The Company had a Federal Home Loan Bank fixed rate advance with a maturity date less than one year of $350.0 million and $300.0 million at September 30, 2014 and December 31, 2013, respectively. The $350.0 million advance at September 30, 2014 had a rate of 0.07% and matures in December 2014. The $300.0 million advance at December 31, 2013 matured early in the first quarter of 2014. The Company has investment securities available for sale and loans pledged as collateral on this FHLB advance. See Note 5. Investment Securities and Note 6. Loans of the notes to the consolidated financial statements.

	On March 9, 2012, the Company entered into a $35.0 million unsecured line of credit with a correspondent bank. Interest is payable at a rate of one month LIBOR + 1.85%. As of September 30, 2014, $15.0 million was outstanding. The line matured on September 8, 2014, was renewed and is scheduled to mature on September 7, 2015.

Longterm_Borrowings

Long-term Borrowings	9 Months Ended
Long-term Borrowings	Sep. 30, 2014
Long-term Debt, Unclassified [Abstract]	'
Long-term Borrowings	'
	Long-term Borrowings

	The Company had Federal Home Loan Bank advances with remaining contractual maturities greater than one year of $4.2 million at September 30, 2014 and $4.3 million at December 31, 2013. As of September 30, 2014, the advances had fixed terms with effective interest rates, net of discounts, ranging from 3.23% to 5.87% and maturities ranging from April 2021 to April 2035. The Company has investment securities available for sale and loans pledged as collateral on this FHLB advance. See Note 5. Investment Securities and Note 6. Loans of the notes to the consolidated financial statements.

	The Company had notes payable to banks totaling $32.8 million and $17.5 million at September 30, 2014 and December 31, 2013, respectively, which as of September 30, 2014, were accruing interest at rates ranging from 2.50% to 12.00%. Lease investments includes equipment with an amortized cost of $28.3 million and $25.7 million at September 30, 2014 and December 31, 2013, respectively, that is pledged as collateral on these notes.

	The Company had a $40.0 million 10-year structured repurchase agreement as of September 30, 2014 and December 31, 2013, which bears interest at a fixed rate borrowing of 4.75% and expires in 2016.

Junior_Subordinated_Notes_Issu

Junior Subordinated Notes Issued to Capital Trusts

9 Months Ended

Sep. 30, 2014

JUNIOR SUBORDINATED NOTES ISSUED TO CAPITAL TRUSTS

Junior Subordinated Notes Issued to Capital Trusts

The Company has established statutory trusts for the sole purpose of issuing trust preferred securities and related trust common securities. The proceeds from such issuances were used by the trusts to purchase junior subordinated notes of the Company, which are the sole assets of each trust. Concurrently with the issuance of the trust preferred securities, the Company issued guarantees for the benefit of the holders of the trust preferred securities. The Company’s outstanding trust preferred securities qualify, and are treated by the Company, as Tier 1 regulatory capital. The Company owns all of the common securities of each trust. The trust preferred securities issued by each trust rank equally with the common securities in right of payment, except that if an event of default under the indenture governing the notes has occurred and is continuing, the preferred securities will rank senior to the common securities in right of payment.

The table below summarizes the outstanding junior subordinated notes and the related trust preferred securities issued by each trust as of September 30, 2014 (in thousands):

Coal City

MB Financial

Capital Trust I

Capital Trust II

Capital Trust III

Capital Trust IV

Junior Subordinated Notes:

Principal balance

25,774

36,083

10,310

20,619

Annual interest rate

3-mo LIBOR + 1.80%

3-mo LIBOR + 1.40%

3-mo LIBOR + 1.50%

3-mo LIBOR + 1.52%

Stated maturity date

September 1, 2028

September 15, 2035

September 23, 2036

September 15, 2036

Call date

September 1, 2008

December 15, 2010

September 23, 2011

September 15, 2011

Trust Preferred Securities:

Face Value

25,000

35,000

10,000

20,000

Annual distribution rate

3-mo LIBOR + 1.80%

3-mo LIBOR + 1.40%

3-mo LIBOR + 1.50%

3-mo LIBOR + 1.52%

Issuance date

July 1998

August 2005

July 2006

August 2006

Distribution dates (1)

Quarterly

MB Financial

FOBB

TAYC

Capital Trust V

Capital Trust VI

Statutory Trust III (2)

Capital Trust II (3)

Junior Subordinated Notes:

Principal balance

30,928

23,196

5,155

41,238

Annual interest rate

3-mo LIBOR + 1.30%

3-mo LIBOR + 2.80%

3-mo LIBOR + 2.68%

Stated maturity date

December 15, 2037

October 30, 2037

January 23, 2034

June 17, 2034

Call date

December 15, 2012

October 30, 2012

January 23, 2009

June 17, 2009

Trust Preferred Securities:

Face Value

30,000

22,500

5,000

40,000

Annual distribution rate

3-mo LIBOR + 1.30%

3-mo LIBOR + 2.80%

3-mo LIBOR + 2.68%

Issuance date

September 2007

October 2007

December 2003

June 2004

Distribution dates (1)

Quarterly

-1

All distributions are cumulative and paid in cash.

-2

FOBB Statutory Trust III was established by First Oak Brook Bancshares, Inc. (“FOBB”) prior to the Company's acquisition of FOBB, and the junior subordinated notes issued by FOBB to FOBB Statutory Trust III were assumed by the Company upon completion of the acquisition.

-3

TAYC Capital Trust II was established by Taylor Capital prior to the Company's acquisition of Taylor Capital, and the junior subordinated notes issued by Taylor Capital to TAYC Capital Trust II were assumed by the Company upon completion of the acquisition.

The trust preferred securities are subject to mandatory redemption, in whole or in part, upon repayment of the junior subordinated notes at the stated maturity date or upon redemption of the junior subordinated notes. Each trust’s ability to pay amounts due on the trust preferred securities is solely dependent upon the Company making payment on the related junior subordinated notes. The Company’s obligation under the junior subordinated notes and other relevant trust agreements, in aggregate, constitutes a full and unconditional guarantee by the Company of each trust’s obligations under the trust preferred securities issued by each trust. The Company has the right to defer payment of interest on the notes and, therefore, distributions on the trust preferred securities, for up to five years, but not beyond the stated maturity date in the table above. During any such deferral period the Company may not pay cash dividends on its stock and generally may not repurchase its stock.

On September 22, 2014, the Company redeemed the junior subordinated notes held by Taylor Capital Trust I and concurrently redeemed all of the issued and outstanding 9.75% TAYC Capital Trust I Preferred Securities. The aggregate liquidation amount of the trust preferred securities was $45.4 million. TAYC Capital Trust I was established by Taylor Capital prior to the Company's acquisition of Taylor Capital, and the junior subordinated notes issued by Taylor Capital to TAYC Capital Trust I were assumed by the Company upon completion of the acquisition. As a result, a $1.9 million gain on early extinguishment of this debt was recognized in the third quarter of 2014.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies

	Commitments: The Company is a party to credit-related financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets.

	The Company’s exposure to credit loss is represented by the contractual amount of these commitments. The Company follows the same credit policies in making commitments as it does for on-balance-sheet instruments.

	At September 30, 2014 and December 31, 2013, the following financial instruments were outstanding, the contractual amounts of which represent off-balance sheet credit risk (in thousands):



		Contractual Amount
		September 30, 2014		December 31, 2013
	Commitments to extend credit:

	Home equity lines	$	216,130	$	208,581

	Other commitments	2,714,127		1,214,391

	Letters of credit:

	Standby	130,057		69,556

	Commercial	6,370		708


	The increase in commitments was primarily due to the Taylor Capital merger.

	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require a payment of a fee. The commitments for home equity lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is based on management’s credit evaluation of the customer.

	The Company, in the normal course of its business, regularly offers standby and commercial letters of credit to its bank customers. Standby and commercial letters of credit are a conditional but irrevocable form of guarantee. Under letters of credit, the Company typically guarantees payment to a third party beneficiary upon the default of payment or nonperformance by the bank customer and upon receipt of complying documentation from that beneficiary.

	Both standby and commercial letters of credit may be issued for any length of time, but normally do not exceed a period of five years. These letters of credit may also be extended or amended from time to time depending on the bank customer’s needs. As of September 30, 2014, the maximum remaining term for any standby letters of credit was September 30, 2030. A fee is charged to the bank customer and is recognized as income over the life of the letter of credit, unless considered non-rebatable under the terms of a letter of credit application.

	At September 30, 2014, the aggregate contractual amount of these letters of credit, which represents the maximum potential amount of future payments that the Company would be obligated to pay, increased $66.2 million to $136.4 million from $70.3 million at December 31, 2013. Of the $136.4 million in commitments outstanding at September 30, 2014, approximately $109.5 million of the letters of credit have been issued or renewed since December 31, 2013.

	Letters of credit issued on behalf of bank customers may be done on either a secured, partially secured or an unsecured basis. If a letter of credit is secured or partially secured, the collateral can take various forms including bank accounts, investments, fixed assets, inventory, accounts receivable or real estate, among other things. The Company takes the same care in making credit decisions and obtaining collateral when it issues letters of credit on behalf of its customers as it does when making other types of loans.

	As of September 30, 2014, the Company had approximately $1.7 million in capital expenditure commitments outstanding which relate to various projects to renovate existing branches.

	Concentrations of credit risk: The majority of the loans, commitments to extend credit and standby letters of credit have been granted to customers in the Company’s market area. As of September 30, 2014, approximately 27% of our investments in securities issued by states and political subdivisions were within the state of Illinois. We did not hold any direct exposure to the state of Illinois as of September 30, 2014. The distribution of commitments to extend credit approximates the distribution of loans outstanding. Standby letters of credit are granted primarily to commercial borrowers. Lease banking provides banking services to lessors located throughout the United States. Our leasing subsidiaries originate leases to companies located through the United States.

	Contingencies: In the normal course of business, the Company is involved in various legal proceedings. In the opinion of management, any liability resulting from pending proceedings would not be expected to have a material adverse effect on the Company’s consolidated financial statements.

	On July 26, 2013, an action captioned James Sullivan v. Taylor Capital Group, Inc., et al., Case No. 2013-CH17751 (the “Sullivan Action”) was commenced against Taylor Capital, the board of directors of Taylor Capital (the “Taylor Capital Board”), and MB Financial (collectively, the “Defendants”) in the Circuit Court of Cook County, Illinois (the “Court”), alleging that the Taylor Capital Board breached its fiduciary duties in connection with the MB Financial/Taylor Capital merger (the “Merger”) and that MB Financial aided and abetted those breaches of fiduciary duty. On August 8, 2013, a stockholder class action captioned Dennis Panozzo v. Taylor Capital Group, Inc., et. al., Case No. 2013-CH-18546 (the “Panozzo Action”) was commenced against the Defendants in the Court making similar allegations in connection with the Merger. Subsequently, on September 10, 2013, the Sullivan Action and the Panozzo Action were consolidated pursuant to Court order under the first-filed Sullivan Action, Case No. 2013-CH17751 (as so consolidated, the “Action”). On October 24, 2013, the plaintiffs in the Action (the “Plaintiffs”) filed a consolidated amended class action complaint, alleging that the Taylor Capital Board breached its fiduciary duties in connection with the Merger, including by making incomplete and misleading disclosures concerning the Merger, and that MB Financial aided and abetted those breaches of fiduciary duty.

	On February 17, 2014, solely to eliminate the costs, risks, burden, distraction and expense of further litigation and to put the claims that were or could have been asserted to rest, the Defendants entered into a memorandum of understanding (the “MOU”) with the Plaintiffs regarding the settlement of the Action pursuant to which Taylor Capital and MB Financial agreed to make certain supplemental disclosures concerning the Merger, which each of Taylor Capital and MB Financial did in a Current Report on Form 8-K filed by each company on February 18, 2014 (the “Form 8-Ks”). On July 10, 2014, the parties entered into a definitive settlement agreement. The agreement provides that, solely for purposes of settlement, the Court will certify a class consisting of all persons who were record or beneficial stockholders of Taylor Capital when the Merger was approved by the Taylor Capital Board or any time thereafter (the “Class”). In addition, the agreement provides that, subject to approval by the Court after notice to the members of the Class (the “Class Members”), the Action will be dismissed with prejudice and all claims that the Class Members may possess with regard to the Merger, with the exception of claims for statutory appraisal, will be released. Class Members will be afforded an opportunity to opt out of the class solely with regard to any monetary claims they may possess. In connection with the settlement, the Plaintiffs’ counsel has expressed their intention to seek an award by the Court of attorneys’ fees and expenses. The amount of the award to the Plaintiffs’ counsel will ultimately be determined by the Court. This payment will not affect the amount of merger consideration paid by MB Financial or that any Taylor Capital stockholder received in the Merger. The proposed settlement has been presented to the Court, and received preliminary approval. It is expected that the proposed settlement will be presented to the Court for final approval on or about November 12, 2014. There can be no assurance that the Court will approve the settlement. In the absence of such approval, the proposed settlement will terminate.

	The Defendants continue to believe that the Action is without merit, have vigorously denied, and continue to vigorously deny, all of the allegations of wrongful or actionable conduct asserted in the Action, and the Taylor Capital Board vigorously maintains that it diligently and scrupulously complied with its fiduciary duties, that the joint proxy statement/prospectus dated January 14, 2014 mailed to the stockholders of Taylor Capital and MB Financial was complete and accurate in all material respects and that no further disclosure was required under applicable law. The Defendants entered into the MOU and the settlement solely to eliminate the costs, risks, burden, distraction and expense of further litigation and to put the claims that were or could have been asserted to rest. Nothing in the MOU, any settlement agreement or any public filing, including the Form 8-Ks, shall be deemed an admission of the legal necessity of filing or the materiality under applicable laws of any of the additional information contained therein or in any public filing associated with the proposed settlement of the Action.

	Based on information currently available, consultations with counsel and established reserves, management believes that the outcome of this litigation will not have a material adverse effect on the Company's consolidated financial position or results of operations.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements

	ASC Topic 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact.

	ASC Topic 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert expected future amounts, such as cash flows or earnings, to a single present value amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement cost). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity's own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

	Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date.

	Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

	Level 3: Significant unobservable inputs that reflect a reporting entity's own assumptions about the assumptions that market participants would use in pricing an asset or liability.

	A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.

	In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality, the Company's creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company's valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company's monthly and/or quarterly valuation process.

	Financial Instruments Recorded at Fair Value on a Recurring Basis

	Securities Available for Sale. The fair values of securities available for sale are determined by quoted prices in active markets, when available, and classified as Level 1. If quoted market prices are not available, the fair value is determined by a matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities' relationship to other benchmark quoted securities and classified as Level 2. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are classified as Level 3.

	Loans Held for Sale. Mortgage loans originated and held for sale in the secondary market are carried at fair value. The fair value of loans held for sale is determined using quoted secondary market prices and classified as level 2.

	Mortgage Servicing Rights. The Company has elected to record its mortgage servicing rights at fair value. Mortgage servicing rights do not trade in an active market with readily observable prices. Accordingly, the Company determines the fair value of mortgage servicing rights by estimating the fair value of the future cash flows associated with the mortgage loans being serviced. Key economic assumptions used in measuring the fair value of mortgage servicing rights include, but are not limited to, prepayment speeds, discount rates, delinquencies and cost to service. The assumptions used in the model are validated on a regular basis. The fair value is validated on a quarterly basis with an independent third party. Any discrepancies between the internal model and the third party validation are investigated and resolved by an internal committee. Due to the nature of the valuation inputs, mortgage servicing rights are classified in Level 3 of the fair value hierarchy.

	Assets Held in Trust for Deferred Compensation and Associated Liabilities. Assets held in trust for deferred compensation are recorded at fair value and included in “Other Assets” on the consolidated balance sheets. These assets are invested in mutual funds and classified as Level 1. Deferred compensation liabilities, also classified as Level 1, are carried at the fair value of the obligation to the employee, which corresponds to the fair value of the invested assets.

	Derivatives. Currently, we use interest rate swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative and classified as Level 2. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including LIBOR rate curves. We also obtain dealer quotations for these derivatives for comparative purposes to assess the reasonableness of the model valuations. We also use forward commitments to buy to-be-announced mortgage securities for which we do not intend to take delivery of the security and will enter into an offsetting position before physical delivery to lessen the price volatility of the mortgage servicing rights asset. Dealer quotations are used for these derivatives and are classified as Level 1. We also offer other derivatives, including foreign currency forward contracts and interest rate lock commitments, to our customers and offset our exposure from such contracts by purchasing other financial contracts, which are valued using market consensus prices. For certain interest rate lock commitments, the Company uses an external valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management’s assumptions and specific information about each borrower transaction and is classified in Level 3 of the hierarchy.
	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (in thousands):



			Total				Quoted Prices in				Significant Other				Significant
							Active Markets for				Observable Inputs				Unobservable Inputs
							Identical Assets				(Level 2)				(Level 3)
							(Level 1)
	30-Sep-14

	Financial assets

	Securities available for sale:

	U.S Government sponsored agencies and enterprises		$	65,829			$	—			$	65,829			$	—

	States and political subdivisions		409,033				—				408,526				507

	Residential mortgage-backed securities		801,940				—				801,392				548

	Commercial mortgage-backed securities		204,162				—				204,162				—

	Corporate bonds		267,239				—				266,940				299

	Equity securities		10,447				10,447				—				—

	Loans held for sale		553,627				—				553,627				—

	Mortgage servicing rights		249,376				—				—				249,376

	Assets held in trust for deferred compensation		16,408				16,408				—				—

	Derivative financial instruments		33,953				138				30,288				3,527

	Financial liabilities

Other liabilities (1)		16,062				16,062				—				—

Derivative financial instruments		34,492				2,112				32,380				—

31-Dec-13

Financial assets

Securities available for sale:

U.S. Government sponsored agencies and enterprises		$	52,068			$	—			$	52,068			$	—

States and political subdivisions		19,143				—				19,143				—

Residential mortgage-backed securities		701,233				—				700,542				691

Commercial mortgage-backed securities		52,941				—				52,941				—

Corporate bonds		283,070				—				277,905				5,165

Equity securities		10,457				10,457				—				—

Loans held for sale		629				—				629				—

Assets held in trust for deferred compensation		10,679				10,679				—				—

Derivative financial instruments		18,645				—				18,645				—

Financial liabilities

Other liabilities (1)		10,569				10,569				—				—

Derivative financial instruments		18,632				—				18,632				—



(1)	Liabilities associated with assets held in trust for deferred compensation

The following table presents additional information about the unobservable inputs used in the fair value measurement of financial assets measured on a recurring basis that were categorized within the Level 3 of the fair value hierarchy:


	Fair Value at
	September 30, 2014			Valuation Technique	Unobservable Input	Range
	(in thousands)
States and political subdivisions	$	507		Discounted cash flows	Credit assumption	45% Loss

Residential mortgage-backed securities	548			Discounted cash flows	Constant pre-payment rates

					(CPR) assumption	1% - 3% CPR
Corporate bonds	299			Discounted cash flows	Credit assumption	20% Loss

Mortgage servicing rights	249,376			Discounted cash flows	CPR	4.3% - 23.7%

					Discount rate	10.00 - 16.25
					Maturity (months)	39 - 457
					Delinquencies	0.00 - 25.00
					Costs to service	$60 - $392
Derivative financial instruments (mortgage interest	3,527			Sales cash flows	Expected closing ratio	28.58 - 94.00

rate lock commitments)					Expected delivery price	96.58 - 109.54

The significant unobservable inputs used in the fair value measurement of the Company’s mortgage servicing rights include prepayment speeds, discount rates, maturities, delinquencies and cost to service. Significant increases in prepayment speeds, discount rates, delinquencies or cost to service would result in a significantly lower fair value measurement. Conversely, significant decreases in prepayment speeds, discount rates, delinquencies or costs to service would result in a significantly higher fair value measurement. With the exception of changes in delinquencies, which can change the cost to service, the unobservable inputs move independently of each other.

Key economic assumptions used in the measuring of the fair value of the mortgage servicing rights and the sensitivity of the fair value to immediate adverse changes in those assumptions at September 30, 2014 are presented in the following table. This table does not take into account the derivatives used to economically hedge the mortgage servicing rights.



(dollars in thousands, except for weighted average cost to service)	30-Sep-14
Weighted average prepayment speed (CPR)	9.1		%
Impact on fair value of 10% adverse change	$	(8,665	)
Impact on fair value of 20% adverse change	(16,778		)

Weighted average discount rate	10.11		%
Impact on fair value of 10% adverse change	$	(10,325	)
Impact on fair value of 20% adverse change	(19,857		)

Weighted average delinquency rate	1.35		%
Impact on fair value of 10% adverse change	$	(1,085	)
Impact on fair value of 20% adverse change	(1,755		)

Weighted average costs to service	$	70

Impact on fair value of 10% adverse change	(3,491		)
Impact on fair value of 20% adverse change	(6,981		)

The Company did not have any transfers between Level 1 and Level 2 of the fair value hierarchy during the three or nine months ended September 30, 2014. The Company's policy for determining transfers between levels occurs at the end of the reporting period when circumstances in the underlying valuation criteria change and result in transfer between levels.

The following table presents additional information about financial assets measured at fair value on a recurring basis for which the Company used significant unobservable inputs (Level 3):



		Nine Months Ended
		September 30,
		2014				2013				2014				2013			2014			2013
(in thousands)		Investment Securities								Mortgage Servicing Rights							Derivatives
Balance, beginning of period		$	5,856			$	6,071			$	—			$	—		$	—		$	—

Acquired through business combination		507				—				232,783				—			5,922			—

Purchases		—				—				489				—			—			—

Originations		—				—				8,587				—			—			—

Other comprehensive income		(71		)		(59		)		7,517				—			(2,395		)	—

Principal payments		(281		)		(118		)		—				—			—			—

Impairment charge		(92		)		—				—				—			—			—

Transferred out of Level 3		(4,565		)		—				—				—			—			—

Balance, ending of period		$	1,354			$	5,894			$	249,376			$	—		$	3,527		$	—


Financial Instruments Recorded at Fair Value on a Nonrecurring Basis

The Company may be required, from time to time, to measure certain financial assets and financial liabilities at fair value on a nonrecurring basis in accordance with U.S. GAAP. These include assets that are measured at the lower of cost or fair value that were recognized at fair value below cost at the end of the period.

Impaired Loans. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment in accordance with ASC Topic 310. The fair value of impaired loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. In accordance with ASC Topic 820, impaired loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. Collateral values are estimated using Level 3 inputs based on customized discounting criteria. For a majority of impaired real estate loans where an allowance is established based on the fair value of collateral (90% at September 30, 2014), the Company obtains a current external appraisal. Other valuation techniques are used as well, including internal valuations, comparable property analysis and contractual sales information.

Non-Financial Assets and Non-Financial Liabilities Recorded at Fair Value

The Company has no non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets and non-financial liabilities measured at fair value on a non-recurring basis include foreclosed assets and non-financial long-lived assets.

Other Real Estate and Repossessed Vehicles Owned (Foreclosed Assets). Foreclosed assets, upon initial recognition, are measured and reported at fair value through a charge-off to the allowance for loan losses based upon the fair value of the foreclosed asset. The fair value of foreclosed assets, upon initial recognition, are estimated using Level 3 inputs based on customized discounting criteria.

Non-Financial Long-Lived Assets. Non-financial long-lived assets, when determined to be impaired, are measured and reported at fair value using Level 3 inputs based on customized discounting criteria.

Assets measured at fair value on a nonrecurring basis as of September 30, 2014 and December 31, 2013 are included in the table below (in thousands):



		Total				Quoted Prices in Active				Significant Other				Significant
						Markets for Identical				Observable Inputs				Unobservable Inputs
						Assets (Level 1)				(Level 2)				(Level 3)
30-Sep-14

Financial assets:

Impaired loans		$	55,346			$	—			$	—			$	55,346

Non-financial assets:
Foreclosed assets		41,333				—				—				41,333

31-Dec-13

Financial assets:

Impaired loans		$	77,497			$	—			$	—			$	77,497

Non-financial assets:
Foreclosed assets		44,601				—				—				44,601


The following table presents additional information about the unobservable inputs used in the fair value measurement of financial assets measured on a nonrecurring basis that were categorized within the Level 3 of the fair value hierarchy:



	Fair Value at			Valuation	Unobservable
	September 30, 2014			Technique	Input	Range
	(in thousands)
Impaired loans	$	55,346		Appraisal of collateral	Appraisal adjustments - sales costs	5% - 10%

Foreclosed assets	41,333			Appraisal of collateral	Appraisal adjustments - sales costs	5% - 10%


ASC Topic 825 requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The methodologies for estimating the fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The estimated fair value approximates carrying value for cash and cash equivalents, accrued interest and the cash surrender value of life insurance policies. The methodologies for other financial assets and financial liabilities are discussed below:

The following methods and assumptions were used by the Company in estimating the fair values of its other financial instruments:

Cash and due from banks, interest earning deposits with banks and federal funds sold: The carrying amounts reported in the balance sheet approximate fair value.

Securities held to maturity: The fair values of securities held to maturity are determined by quoted prices in active markets, when available, and classified as Level 1. If quoted market prices are not available, the fair value is determined by a matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities' relationship to other benchmark quoted securities and classified as Level 2. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are classified as Level 3.

Non-marketable securities - FHLB and FRB Stock: The carrying amounts reported in the balance sheet approximate fair value.

Loans Held for Sale: The fair value of loans held for sale is determined using quoted secondary market prices.

Loans: The fair values for loans are estimated using discounted cash flow analyses, using the corporate bond curve adjusted for liquidity for commercial loans and the swap curve adjusted for liquidity for retail loans.

Non-interest bearing deposits: The fair values disclosed are equal to their balance sheet carrying amounts, which represent the amount payable on demand.

Interest bearing deposits: The fair values disclosed for deposits with no defined maturities are equal to their carrying amounts, which represent the amounts payable on demand. Fair values for certificates of deposit are estimated using a discounted cash flow calculation that applies the Company's current incremental borrowing rates for similar terms.

Short-term borrowings: The carrying amounts of federal funds purchased, borrowings under repurchase agreements and other short-term borrowings with maturities of 90 days or less approximate their fair values. The fair value of short-term borrowings greater than 90 days is based on the discounted value of contractual cash flows.

Long-term borrowings: The fair values of the Company's long-term borrowings (other than deposits) are estimated using discounted cash flow analyses, based on the Company's current incremental borrowing rates for similar types of borrowing arrangements.

Junior subordinated notes issued to capital trusts: The fair values of the Company's junior subordinated notes issued to capital trusts are estimated based on the quoted market prices, when available, of the related trust preferred security instruments, or are estimated based on the quoted market prices of comparable trust preferred securities.

Accrued interest: The carrying amount of accrued interest receivable and payable approximate their fair values.

Off-balance-sheet instruments: Fair values for the Company’s off-balance-sheet lending commitments (guarantees, letters of credit and commitments to extend credit) are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements.

The estimated fair values of financial instruments are as follows (in thousands):


		30-Sep-14
		Carrying Amount				Estimated Fair Value			Quoted Prices in Active			Significant Other			Significant
									Markets for Identical			Observable Inputs			Unobservable Inputs
									Assets (Level 1)			(Level 2)			(Level 3)

Financial Assets:
Cash and due from banks		$	267,405			$	267,405		$	267,405		$	—		$	—

Interest earning deposits with banks		179,391				179,391			179,391			—			—

Investment securities available for sale		1,758,650				1,758,650			10,447			1,746,849			1,354

Investment securities held to maturity		1,005,349				1,045,517			—			1,045,517			—

Non-marketable securities - FHLB and FRB stock		75,569				75,569			—			—			75,569

Loans held for sale		553,627				553,627			—			553,627			—

Loans, net		8,880,207				8,871,886			—			—			8,871,886

Accrued interest receivable		47,956				47,956			47,956			—			—

Derivative financial instruments		33,953				33,953			138			30,288			3,527

Financial Liabilities:
Noninterest bearing deposits		$	3,807,554			$	3,807,554		$	3,807,554		$	—		$	—

Interest bearing deposits		7,430,994				7,438,126			—			—			7,438,126

Short-term borrowings		667,160				667,156			—			—			667,156

Long-term borrowings		77,269				80,628			—			—			80,628

Junior subordinated notes issued to capital trusts		185,681				134,011			—			—			134,011

Accrued interest payable		3,420				3,420			3,420			—			—

Derivative financial instruments		34,492				34,492			2,112			32,380			—





		31-Dec-13
		Carrying Amount				Estimated Fair Value			Quoted Prices in Active			Significant Other			Significant
									Markets for Identical			Observable Inputs			Unobservable Inputs
									Assets (Level 1)			(Level 2)			(Level 3)
Financial Assets:

Cash and due from banks		$	205,193			$	205,193		$	205,193		$	—		$	—

Interest earning deposits with banks		268,266				268,266			268,266			—			—

Federal funds sold		42,950				42,950			42,950			—			—

Investment securities available for sale		1,118,912				1,118,912			10,457			1,102,599			5,856

Investment securities held to maturity		1,182,533				1,198,929			—			1,198,929			—

Non-marketable securities - FHLB and FRB stock		51,417				51,417			—			—			51,417

Loans held for sale		629				629			—			629			—

Loans, net		5,600,805				5,583,759			—			—			5,583,759

Accrued interest receivable		36,593				36,593			36,593			—			—

Derivative financial instruments		18,645				18,645			—			18,645			—

Financial Liabilities:

Non-interest bearing deposits		$	2,375,863			$	2,375,863		$	2,375,863		$	—		$	—

Interest bearing deposits		5,005,396				5,012,928			—			—			5,012,928

Short-term borrowings		493,389				493,384			—			—			493,384

Long-term borrowings		62,159				66,301			—			—			66,301

Junior subordinated notes issued to capital trusts		152,065				101,247			—			—			101,247

Accrued interest payable		2,042				2,042			2,042			—			—

Derivative financial instruments		18,632				18,632			—			18,632			—

Stock_Incentive_Plans

Stock Incentive Plans	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock Incentive Plans	'
	Stock Incentive Plans

	ASC Topic 718 requires that the grant date fair value of equity awards to employees be recognized as compensation expense over the period during which an employee is required to provide service in exchange for such award.

	The following table summarizes the impact of the Company’s share-based payment plans in the financial statements for the periods shown (in thousands):



			Three Months Ended							Nine Months Ended
			September 30,							September 30,
			2014				2013			2014			2013
	Total cost of share-based payment plans during the period		$	2,338			$	1,388		$	6,593		$	3,860

	Amount of related income tax benefit recognized in income		922				548			2,592			$	1,530


	The Company adopted the Omnibus Incentive Plan (the “Omnibus Plan”) in 1997. On May 28, 2014, the Company’s stockholders approved the third amendment and restatement of the Omnibus Plan to add 3,100,000 authorized shares for a total of 11,400,000 shares of common stock authorized to be utilized in connection with awards under the Omnibus Plan to directors, officers, and employees of the Company or any of its subsidiaries. The amended and restated plan also authorized an additional 2,400,000 shares upon completion of the Taylor Capital merger increasing the total number of shares authorized to 13,800,000. Equity grants under the Omnibus Plan can be in the form of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units, and other stock-based awards. Shares awarded in the form of restricted stock, restricted stock units, performance shares, performance units, or other stock-based awards generally will reduce the shares available under the Omnibus Plan on a 2-for-1 basis. Following May 28, 2014, no more than 10% of the total number of authorized shares may be issued with respect to awards granted after that date, other than stock appreciation rights, stock options and performance-based awards, which at the date of grant are scheduled to fully vest prior to three years from the date of grant (although such awards may provide scheduled vesting earlier with respect to some of such shares and for acceleration of vesting as provided in the Omnibus Plan). As of September 30, 2014, there were 6,214,365 shares available for future grants.

	Prior to 2014, annual equity-based incentive awards were typically granted to selected officers and employees mid-year. In 2014, these awards began being granted in the first quarter of the year. Options are granted with an exercise price equal to no less than the market price of the Company’s shares at the date of grant; those option awards generally vest over four years of service and have 10-year contractual terms. Restricted shares and units typically vest over a two to four year period. Equity awards may also be granted at other times throughout the year in connection with the recruitment and retention of officers and employees. Directors currently may elect, in lieu of cash, to receive up to 70% of their fees in stock options with a five year term, which are fully vested on the grant date (provided that the director may not sell the underlying shares for at least six months after the grant date), and up to 100% of their fees in restricted shares, which vest one year after the grant date.

	The following table summarizes stock options outstanding for the nine months ended September 30, 2014:



			Number of			Weighted			Weighted		Aggregate
			Options			Average			Average		Intrinsic
						Exercise			Remaining		Value
						Price			Contractual		(in thousands)
									Term
									(In Years)
	Options outstanding as of December 31, 2013		2,443,752			$	27.57

	Granted		221,216			29.47

	Exercised		(163,138	)		18.9

	Expired or cancelled		(156,104	)		35.78

	Forfeited		(26,313	)		21.81

	Options outstanding as of September 30, 2014		2,319,413			$	27.87		4.66		$	6,755

	Options exercisable as of September 30, 2014		1,742,430			$	28.91		3.49		$	4,684


	The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model based on certain assumptions. Expected volatility is based on historical volatility and the expectations of future volatility of Company shares. The risk free interest rate for periods within the contractual term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. The expected life of options is estimated based on historical employee behavior and represents the period of time that options granted are expected to remain outstanding.

	The following assumptions were used for options granted during the nine months ended September 30, 2014:


			September 30, 2014
	Risk-free interest rate		1.83		%
	Expected volatility of Company’s stock		23.1		%
	Expected dividend yield		1.65		%
	Expected life of options		5.6 years

	Weighted average fair value per option of options granted during the year		$	5.93


	The total intrinsic value of options exercised during the nine months ended September 30, 2014 and 2013 was $1.6 million and $929 thousand, respectively.

	The following is a summary of changes in restricted shares and units for the nine months ended September 30, 2014:



		Number of			Weighted
		Shares and Units			Average
					Grant Date
					Fair Value
Shares Outstanding at December 31, 2013		685,719			$	22.59

Granted		442,251			29.22

Vested		(298,533	)		20.41

Forfeited		(17,611	)		24.58

Shares Outstanding at September 30, 2014		811,826			$	26.96


The total intrinsic value of restricted shares that vested during the nine months ended September 30, 2014 and 2013 was $8.4 million and $5.7 million, respectively.

The Company issued 48,569, 56,752 and 65,333 market-based restricted stock units in 2014, 2013 and 2012, respectively, which entitle recipients to shares of common stock at the end of a three year vesting period. Recipients will earn shares, totaling between 0% and 175% of the number of units issued, based on the Company's total stockholder return relative to a specified peer group of financial institutions over the three year period. The market-based restricted stock units are included in the preceding table as if the recipients earned shares equal to 100% of the units issued. A Monte Carlo simulation model was used to value the market-based restricted stock units at the time of issuance.

The Company issued 92,717 shares of market-based restricted stock in 2011. The market component of the vesting terms for the award requires that, for ten consecutive trading days, the closing price of the Company’s stock be at least $27.00. The market component for this award has been satisfied and vested in full in the third quarter of 2014, on the third anniversary of the grant date. A Monte Carlo simulation model was used to value the market-based restricted stock awards at the time of issuance.

As of September 30, 2014, there was $19.8 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements (including share option and nonvested share awards) granted under the Omnibus Plan. At September 30, 2014, the weighted-average period over which the unrecognized compensation expense is expected to be recognized was approximately 2.5 years.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments

	The Company offers various derivatives, including interest rate swaps and foreign currency forward contracts, to our customers which can mitigate our exposure to market risk through the execution of off-setting positions with inter-bank dealer counterparties. This also permits the Company to offer customized risk management solutions to our customers. These customer accommodations and any offsetting financial contracts are treated as non-designated derivative instruments and carried at fair value through an adjustment to the income statement.

	Interest rate swap and foreign currency forward contracts involve the risk of dealing with counterparties and their ability to meet contractual terms. The net amount payable or receivable under interest rate swaps is accrued as an adjustment to interest income. The net amount payable as of September 30, 2014 was approximately $964 thousand, and the net amount payable as of December 31, 2013 was approximately $25 thousand. The Company's credit exposure on interest rate swaps is limited to the Company's net favorable value and interest payments of all swaps to each counterparty. In such cases, collateral is generally required from the counterparties involved if the net value of the swaps exceeds a nominal amount. At September 30, 2014, the Company’s credit exposure relating to interest rate swaps was approximately $18.8 million, which is secured by the underlying collateral on customer loans.

	The Company also enters into mortgage banking derivatives which are classified as non-designated 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 residential mortgage loans 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 had fair value commercial loan interest rate swaps, to hedge its interest rate risk, with an aggregate notional amount of $208 thousand at September 30, 2014. For fair value hedges, the changes in fair values of both the hedging derivative and the hedged item were recorded in current earnings as non-interest income.

	Interest rate swaps are used in order to lessen the price volatility of the mortgage servicing rights asset. The Company also uses forward commitments to buy to-be-announced mortgage securities for which the Company does not intend to take delivery of the security and will enter into an offsetting position before physical delivery to lessen the price volatility of the mortgage servicing rights asset. These derivatives are recorded at their fair value on the consolidated balance sheets in other assets with changes in fair value recorded on the consolidated statements of income in mortgage banking revenue in non-interest income.


	The Company’s derivative financial instruments are summarized below as of September 30, 2014 and December 31, 2013 (in thousands):



			Asset Derivatives																Liability Derivatives
			30-Sep-14								31-Dec-13								30-Sep-14							31-Dec-13
			Notional				Estimated				Notional				Estimated				Notional			Estimated				Notional			Estimated
			Amount				Fair Value				Amount				Fair Value				Amount			Fair Value				Amount			Fair Value
	Derivative instruments designated as hedges of fair value:

	Interest rate swap contracts (1)		$	238,000			$	3,512			$	—			$	—			$	317,208		$	(5,399	)		$	238		$	(23	)

	Stand-alone derivative instruments (2)

	Interest rate swap contracts		983,309				24,441				550,883				17,298				984,081			(24,787		)		551,798			(17,350		)

	Interest rate options contracts		56,105				401				83,907				323				56,105			(401		)		84,953			(323		)

	Foreign exchange contracts		22,866				1,270				31,361				1,006				20,392			(1,138		)		47,760			(935		)

	Spot foreign exchange contracts		768				9				—				—				1,256			(18		)		—			—

	Mortgage related derivatives		1,004,855				4,320				1,783				18				723,233			(2,749		)		250			(1		)

	Total non-hedging derivative instruments		2,067,903				30,441				667,934				18,645				1,785,067			(29,093		)		684,761			(18,609		)

	Total		$	2,305,903			$	33,953			$	667,934			$	18,645			$	2,102,275		$	(34,492	)		$	684,999		$	(18,632	)


	(1) Hedged mortgage servicing rights asset and fixed-rate commercial real estate loans
	(2) These portfolio swaps are not designated as hedging instruments under ASC Topic 815.

	Amounts included in the other income in the consolidated statements of operations related to derivative financial instruments were as follows (in thousands):



			Three Months Ended								Nine Months Ended
			September 30,								September 30,
			2014				2013				2014				2013
	Derivative instruments designated as hedges of fair value:

	Interest rate swap contracts		$	(1,869	)		$	(1	)		$	(1,871	)		$	9

	Stand-alone derivative instruments:

	Interest rate swap contracts		(312		)		7				(294		)		30

	Interest rate options contracts		—				—				—				—

	Foreign exchange contracts		4				(12		)		61				(7		)

Spot foreign exchange contracts		(17		)		—				(9		)		—

Mortgage related derivatives		1,514				(16		)		1,554				(80		)

Total non-hedging derivative instruments		1,189				(21		)		1,312				(57		)

Total		$	(680	)		$	(22	)		$	(559	)		$	(48	)

Methods and assumptions used by the Company in estimating the fair value of its interest rate swaps are discussed in Note 13 to consolidated financial statements.

Certain instruments and transactions subject to an agreement similar to a master netting arrangement are eligible for offset in the consolidated balance sheet. The instruments and transactions would include derivatives, sale and repurchase agreements and reverse sale and repurchase agreements, and securities borrowing and securities lending arrangements. The Company’s derivative transactions with financial institution counterparties are generally executed under International Swaps and Derivative Association (“ISDA”) master agreements which include “right of set-off” provisions. Under these agreements, there is generally a legally enforceable right to offset recognized amounts, and there may be an intention to settle such amounts on a net basis. The Company, however, does not generally offset such financial instruments for financial reporting purposes.

Information about the Company's financial instruments that are eligible for offset in the consolidated balance sheet as of September 30, 2014 is summarized below (in thousands):



		Financial Assets												Financial Liabilities
		Gross Amount Recognized				Gross Amount Offset				Net Amount Recognized				Gross Amount Recognized				Gross Amount Offset			Net Amount Recognized
Derivatives:
Interest rate swaps, caps and floors		$	6,539			$	—			$	6,539			$	27,562			$	—		$	27,562

Foreign currency forward contracts		840				—				840				379				—			379

Mortgage related derivatives		734				—				734				2,709				—			2,709

Total derivatives		8,113				—				8,113				30,650				—			30,650

Repurchase agreements		—				—				—				248,150				—			248,150

Total		$	8,113			$	—			$	8,113			$	278,800			$	—		$	278,800




		Financial Assets																Financial Liabilities
		Net Amount Recognized				Financial Instruments				Collateral				Net Amount				Net Amount Recognized			Financial Instruments				Collateral			Net Amount
Derivatives:
Counterparty A		$	172			$	(172	)		$	—			$	—			$	8,578		$	(172	)		$	(8,406	)	$	—

Counterparty B		3,792				(3,792		)		—				—				8,680			(3,792		)		(4,888		)	—

Counterparty C		5				(5		)		—				—				4,125			(5		)		(4,120		)	—

Other counterparties		4,144				(3,755		)		—				389				9,267			(3,755		)		(5,134		)	378

Total derivatives		8,113				(7,724		)		—				389				30,650			(7,724		)		(22,548		)	378

Repurchase agreements		—				—				—				—				248,150			—				(248,150		)	—

Total		$	8,113			$	(7,724	)		$	—			$	389			$	278,800		$	(7,724	)		$	(270,698	)	$	378


Information about the Company's financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2013 is summarized below (in thousands):



		Financial Assets												Financial Liabilities
		Gross Amount Recognized				Gross Amount Offset				Net Amount Recognized				Gross Amount Recognized				Gross Amount Offset			Net Amount Recognized
Derivatives:
Interest rate swaps, caps and floors		$	5,792			$	—			$	5,792			$	11,904			$	—		$	11,904

Foreign currency forward contracts		80				—				80				848				—			848

Mortgage related derivatives		3				—				3				1				—			1

Total derivatives		5,875				—				5,875				12,753				—			12,753

Repurchase agreements		—				—				—				193,389				—			193,389

Total		$	5,875			$	—			$	5,875			$	206,142			$	—		$	206,142




		Financial Assets																Financial Liabilities
		Net Amount Recognized				Financial Instruments				Collateral				Net Amount				Net Amount Recognized			Financial Instruments				Collateral			Net Amount
Derivatives:
Counterparty A		$	883			$	(883	)		$	—			$	—			$	10,669		$	(883	)		$	(9,786	)	$	—

Counterparty B		1,836				(412		)		—				1,424				412			(412		)		—			—

Counterparty C		2,380				(1,612		)		—				768				1,612			(1,612		)		—			—

Other counterparties		776				(5		)		—				771				60			(5		)		—			55

Total derivatives		5,875				(2,912		)		—				2,963				12,753			(2,912		)		(9,786		)	55

Repurchase agreements		—				—				—				—				193,389			—				(193,389		)	—

Total		$	5,875			$	(2,912	)		$	—			$	2,963			$	206,142		$	(2,912	)		$	(203,175	)	$	55

Operating_Segments

Operating Segments	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Operating Segments	'
	Operating Segments

	The Company's operations consist of three reportable operating segments: banking, leasing and mortgage banking. The Company offers different products and services through its three segments. The accounting policies of the segments are generally the same as those of the consolidated company.

	The banking segment generates its revenues primarily from its lending and deposit gathering activities. The profitability of this segment's operations depends primarily on its net interest income after provision for credit losses, which is the difference between interest earned on interest earning assets and interest paid on interest bearing liabilities less provision for credit losses. The provision for credit losses is dependent on changes in its loan portfolio and management’s assessment of the collectability of the loan portfolio as well as prevailing economic and market conditions. The banking segment is also subject to an extensive system of laws and regulations that are intended primarily for the protection of customers and depositors. These laws and regulations govern such areas as capital, permissible activities, allowance for loan losses, loans and investments, and rates of interest that can be charged on loans.

	The leasing segment generates its revenues through lease originations and related services offered through the Company's leasing subsidiaries, LaSalle Systems Leasing, Inc., Celtic Leasing Corp. and Cole Taylor Equipment Finance. The leasing subsidiaries invest directly in equipment that we lease (referred to as direct finance, leveraged or operating leases) to "Fortune 1000," large middle-market companies and healthcare providers located throughout the United States. The lease portfolio is made up of various kinds of equipment, generally technology related, such as computer systems, satellite equipment, medical equipment and general manufacturing equipment. The leasing subsidiaries also specialize in selling third party equipment maintenance contracts to large companies.

	The mortgage banking segment originates mortgage loans for sale to investors and for the Company's portfolio through its retail and broker channels. This segment also services residential mortgage loans for various investors and for loans owned by the Company. The mortgage banking segment is also subject to an extensive system of laws and regulations that are intended primarily for the protection of customers.

	Net interest income for the leasing segment includes adjustments based on the Company's internal funds transfer pricing model as well as interest on loans originated for the sole purpose of funding equipment purchases related to leases at the Company's lease subsidiaries. The provision for credit losses and non-interest expense for the leasing segment includes adjustments for internal allocations of certain expenses.

	The following tables present summary financial information for the reportable segments (in thousands):



		Banking				Leasing				Mortgage Banking				Consolidated
	Three months ended September 30, 2014
	Net interest income	$	88,863			$	3,216			$	3,533			$	95,612

	Provision for credit losses	3,172				(58		)		(5		)		3,109

	Non-interest income	27,965				16,299				16,823				61,087

	Non-interest expense (1)	117,325				9,721				15,155				142,201

	Income tax expense	(1,287		)		3,693				2,082				4,488

	Net income	$	(2,382	)		$	6,159			$	3,124			$	6,901

	Total assets	$	13,212,350			$	490,690			$	803,003			$	14,506,043

	Three months ended September 30, 2013
	Net interest income	$	67,433			$	1,475			$	—			$	68,908

	Provision for credit losses	(3,348		)		44				—				(3,304		)

	Non-interest income	23,484				14,046				177				37,707

	Non-interest expense	67,873				8,392				—				76,265

	Income tax expense	6,402				2,781				71				9,254

	Net income	$	19,990			$	4,304			$	106			$	24,400

	Total assets	$	8,873,765			$	383,853			$	—			$	9,257,618





		Banking				Leasing				Mortgage Banking				Consolidated
	Nine months ended September 30, 2014
	Net interest income	$	219,248			$	8,231			$	3,533			$	231,012

	Provision for credit losses	2,488				(174		)		(5		)		2,309

	Non-interest income	77,842				42,716				17,069				137,627

	Non-interest expense (1)	252,952				28,171				15,155				296,278

	Income tax expense	9,345				8,649				2,082				20,076

Net income	$	32,305			$	14,301			$	3,370			$	49,976

Total assets	$	13,212,350			$	490,690			$	803,003			$	14,506,043

Nine months ended September 30, 2013
Net interest income	$	200,571			$	3,502			$	—			$	204,073

Provision for credit losses	(2,930		)		126				—				(2,804		)

Non-interest income	69,698				44,329				1,322				115,349

Non-interest expense	193,182				24,765				—				217,947

Income tax expense	20,411				8,740				529				29,680

Net income	$	59,606			$	14,200			$	793			$	74,599

Total assets	$	8,873,765			$	383,853			$	—			$	9,257,618



(1)	Includes merger related expenses of $27.2 million and $28.3 million in the banking segment for the three and nine months ended September 30, 2014, respectively.

Preferred_Stock_Notes

Preferred Stock (Notes)	9 Months Ended
Preferred Stock (Notes)	Sep. 30, 2014
Equity [Abstract]	'
Preferred Stock	'
	Preferred Stock

	On August 18, 2014, in connection with the Taylor Capital merger, the Company issued one share of its Perpetual Non-Cumulative Preferred Stock, Series A (“Company Series A Preferred Stock”), in exchange for each of the 4,000,000 outstanding shares of Taylor Capital’s Perpetual Non-Cumulative Preferred Stock, Series A. Holders of the Company Series A Preferred Stock are entitled to receive, when as and if declared by the Company’s board of directors, non-cumulative cash dividends on the liquidation preference, which is $25 per share, at a rate of 8.00% per annum, payable quarterly. The Company Series A Preferred Stock is included in Tier 1 capital for regulatory capital purposes.

New_Authoritative_Accounting_G1

New Authoritative Accounting Guidance (Policies)	9 Months Ended
New Authoritative Accounting Guidance (Policies)	Sep. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Authoritative Accounting Pronouncements	'
	New Authoritative Accounting Guidance

	ASC Topic 740 “Income Taxes.” New authoritative accounting guidance under ASC Topic 740, “Income Taxes” amended prior guidance to include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. An unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The Company adopted this new authoritative guidance on January 1, 2014, and it did not have an impact on the Company's statements of operations or financial condition.

	ASC Topic 310 “Receivables.” New authoritative accounting guidance under ASC Topic 310, “Receivables” amended prior guidance to clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical
	possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosures. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

	ASC Topic 323 “Investments - Equity Method and Joint Ventures.” New authoritative accounting guidance under ASC Topic 323, “Investments - Equity Method and Joint Ventures” amended prior guidance to permit entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the statement of operation as a component of income tax expense. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have a significant impact impact on the Company's statements of operations or financial condition.

	ASC Topics 205 “Presentation of Financial Statements” and 360 “Property, Plant, and Equipment.” New authoritative accounting guidance under ASC Topic 205, “Presentation of Financial Statements” and ASC Topic 360 “Property, Plant, and Equipment” amended prior guidance to change the requirements for reporting discontinued operations. The disposal of a component of an entity or group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The new authoritative guidance also requires additional disclosures about discontinued operations. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

	ASC Topic 860 “Transfers and Servicing.” New authoritative accounting guidance under ASC Topic 860, “Transfers and Servicing” amended prior guidance to change the accounting for repurchase-to-maturity transactions to secured borrowing accounting and to require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. The new authoritative guidance also requires disclosures for a transfer of a financial asset accounted for as a sale and an agreement with the same transferee entered into in contemplation of the initial transfer that results in the transferor retaining substantially all of the exposure to the economic return on the transferred financial asset throughout the term of the transaction. The new authoritative guidance will be effective for reporting periods after January 1, 2015, and the Company is assessing the impact on the statements of operations and financial condition.

	ASC Topic 718 “Compensation - Stock Compensation.” New authoritative accounting guidance under ASC Topic 718, “Compensation - Stock Compensation” amended prior guidance to require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. The new authoritative guidance will be effective for reporting periods after January 1, 2015 and is not expected to have an impact on the Company's statements of operations or financial condition.

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Reconciliation of the number of shares used in the calculation of basic and diluted earnings (loss) per common share, net income available to common stockholders, and earnings per share	'
	The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share (amounts in thousands, except share and per share data).



		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014			2013		2014		2013
	Distributed earnings allocated to common stock	$	10,545		$	6,636	$	23,877	$	17,653

	Undistributed (loss) earnings	(3,644		)	17,764		26,099		56,946

	Net income	6,901			24,400		49,976		74,599

	Less: preferred stock dividends and discount accretion	2,000			—		2,000		—

	Net income available to common stockholders	4,901			24,400		47,976		74,599

	Less: earnings allocated to participating securities	—			1		1		2

	Earnings allocated to common stockholders	$	4,901		$	24,399	$	47,975	$	74,597

	Weighted average shares outstanding for basic earnings per common share	63,972,902			54,565,089		57,795,094		54,471,541

	Dilutive effect of equity awards	485,076			565,564		546,833		440,811

	Weighted average shares outstanding for diluted earnings per common share	64,457,978			55,130,653		58,341,927		54,912,352

	Basic earnings per common share	$	0.08		$	0.45	$	0.83	$	1.37

	Diluted earnings per common share	0.08			0.44		0.82		1.36

Business_Combinations_Business

Business Combinations Business Combinations (Tables)	9 Months Ended
Business Combinations Business Combinations (Tables)	Sep. 30, 2014
Business Combinations [Abstract]	'
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	'
	The following table presents the acquired loans as of the acquisition date (in thousands):



			PCI Loans			Non-PCI Loans
	Contractually required principal and interest payments		$	217,415		$	3,696,399
	Contractually required principal and interest payments		$	217,415		$	3,696,399
	Contractually required interest payments not expected to be collected due to estimated prepayments		—			(264,030		)
			—			(264,030		)
	Nonaccretable difference		(30,042		)	—
	Nonaccretable difference		(30,042		)	—
	Cash flows expected to be collected		187,373			3,432,369
	Cash flows expected to be collected		187,373			3,432,369
	Accretable difference		(3,252		)	(77,186		)
	Fair value of acquired loans		$	184,121		$	3,355,183
	Fair value of acquired loans		$	184,121		$	3,355,183
	Estimated fair values of the assets acquired and liabilities assumed in the Taylor Capital transaction, as of the closing date of the transaction were as follows (in thousands):



			August 18,
			2014
	ASSETS
	Cash and cash equivalents		$	154,684
	Cash and cash equivalents		$	154,684
	Investment securities available for sale		826,691
	Investment securities available for sale		826,691
	Investment securities held to maturity		22,599
	Investment securities held to maturity		22,599
	Non-marketable securities - FRB and FHLB Stock		50,620
	Non-marketable securities - FRB and FHLB Stock		50,620
	Loans held for sale		670,671
	Loans held for sale		670,671
	Loans		3,539,304
	Loans		3,539,304
	Leases investments, net		11,885
	Leases investments, net		11,885
	Premises and equipment		20,201
	Premises and equipment		20,201
	Goodwill		275,577
	Goodwill		275,577
	Core deposit intangible		25,000
	Core deposit intangible		25,000
	Mortgage servicing rights		232,439
	Mortgage servicing rights		232,439
	Other real estate owned		5,082
	Other real estate owned		5,082
	Other assets		113,266
	Other assets		113,266
	Total assets		$	5,948,019
	Total assets		$	5,948,019
	LIABILITIES
	Deposits		$	3,953,213
	Deposits		$	3,953,213
	Short-term borrowings		1,035,800
	Short-term borrowings		1,035,800
	Junior subordinated notes issued to capital trusts		80,843
	Junior subordinated notes issued to capital trusts		80,843
	Accrued expenses and other liabilities		123,103
	Accrued expenses and other liabilities		123,103
	Total liabilities		$	5,192,959
	Total liabilities		$	5,192,959
	Series A preferred stock at $28.82 per share at August 15, 2014		$	115,280
			$	115,280
Total identifiable net assets less Series A preferred stock		$	639,780
Total identifiable net assets less Series A preferred stock		$	639,780

Consideration excluding Series A preferred stock:
Market value of common stock at $26.49 per share at August 15, 2014 (19,602,482 shares of common stock issued)		$	519,270
		$	519,270
Cash paid, net		120,510
Cash paid, net		120,510
Total fair value of consideration, excluding Series A preferred stock		$	639,780
		$	639,780
Business Acquisition, Pro Forma Information [Table Text Block]	'
	The following table provides the unaudited pro forma information for the results of operations for the three and nine months ended September 30, 2014 and 2013, as if the acquisition had occurred January 1, 2013. The pro forma results combine the historical results of Taylor Capital into the Company's consolidated statement of income including the impact of certain purchase accounting adjustments including loan discount accretion, investment securities discount accretion, intangible assets amortization, deposit premium accretion and borrowing discount amortization. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1 of each year. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. The merger related expenses that have been recognized are included in net income in the table below.


			Pro Forma
			Three Months Ended						Nine Months Ended
			September 30,						September 30,
			2014			2013			2014		2013
	(in thousands)
	Total revenues (net interest income plus non-interest income)		$	193,507		$	193,363		$	571,289	$	590,254
			$	193,507		$	193,363		$	571,289	$	590,254
	Net income		7,689			43,279			75,697		135,771
	Net income		7,689			43,279			75,697		135,771

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investments Securities [Abstract]	'
Summary investment holdings	'
	Amortized cost and fair value of investment securities were as follows as of the dates indicated (in thousands):



		Amortized			Gross			Gross			Fair
		Cost			Unrealized			Unrealized			Value
					Gains			Losses
	30-Sep-14

	Available for Sale

	U.S. Government sponsored agencies and enterprises	$	64,809		$	1,299		$	(279	)	$	65,829

	States and political subdivisions	391,900			17,330			(197		)	409,033

	Residential mortgage-backed securities	795,554			8,528			(2,142		)	801,940

	Commercial mortgage-backed securities	204,076			1,457			(1,371		)	204,162

	Corporate bonds	265,720			3,204			(1,685		)	267,239

	Equity securities	10,470			—			(23		)	10,447

	Total Available for Sale	1,732,529			31,818			(5,697		)	1,758,650

	Held to Maturity

	States and political subdivisions	760,674			27,774			(351		)	788,097

	Residential mortgage-backed securities	244,675			12,745			—			257,420

	Total Held to Maturity	1,005,349			40,519			(351		)	1,045,517

	Total	$	2,737,878		$	72,337		$	(6,048	)	$	2,804,167

	31-Dec-13

	Available for Sale

	U.S. Government sponsored agencies and enterprises	$	50,486		$	1,704		$	(122	)	$	52,068

	States and political subdivisions	19,398			22			(277		)	19,143

	Residential mortgage-backed securities	696,415			8,555			(3,737		)	701,233

	Commercial mortgage-backed securities	50,891			2,050			—			52,941

	Corporate bonds	284,083			1,597			(2,610		)	283,070

	Equity securities	10,649			—			(192		)	10,457

	Total Available for Sale	1,111,922			13,928			(6,938		)	1,118,912

	Held to Maturity

	States and political subdivisions	932,955			7,584			(4,366		)	936,173

	Residential mortgage-backed securities	249,578			13,178			—			262,756

	Total Held to Maturity	1,182,533			20,762			(4,366		)	1,198,929

	Total	$	2,294,455		$	34,690		$	(11,304	)	$	2,317,841


Unrealized losses on investment securities and the fair value of the related securities	'
	Unrealized losses on investment securities by length of time in a continuous unrealized loss position and the fair value of the related securities at December 31, 2013 were as follows (in thousands):



		Less Than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	Available for Sale
	U.S. Government sponsored agencies and enterprises	$	18,598		$	(122	)	$	—		$	—		$	18,598	$	(122	)

	States and political subdivisions	2,275			(166		)	4,748			(111		)	7,023		(277		)

	Residential mortgage-backed securities	232,807			(2,905		)	44,182			(832		)	276,989		(3,737		)

	Corporate bonds	122,344			(2,606		)	705			(4		)	123,049		(2,610		)

	Equity securities	10,457			(192		)	—			—			10,457		(192		)

	Total Available for Sale	386,481			(5,991		)	49,635			(947		)	436,116		(6,938		)

	Held to Maturity

	States and political subdivisions	235,016			(4,330		)	1,301			(36		)	236,317		(4,366		)

	Total	$	621,497		$	(10,321	)	$	50,936		$	(983	)	$	672,433	$	(11,304	)

	Unrealized losses on investment securities by length of time in a continuous unrealized loss position and the fair value of the related securities at September 30, 2014 were as follows (in thousands):



		Less Than 12 Months						12 Months or More						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	Available for Sale

	U.S. Government sponsored agencies and enterprises	$	14,631		$	(279	)	$	—		$	—		$	14,631	$	(279	)

	States and political subdivisions	45,023			(128		)	3,556			(69		)	48,579		(197		)

	Residential mortgage-backed securities	325,538			(1,815		)	24,935			(327		)	350,473		(2,142		)

	Commercial mortgage-backed securities	154,928			(1,371		)	—			—			154,928		(1,371		)

	Corporate bonds	36,654			(207		)	9,875			(1,478		)	46,529		(1,685		)

	Equity securities	10,447			(23		)	—			—			10,447		(23		)

	Total Available for Sale	587,221			(3,823		)	38,366			(1,874		)	625,587		(5,697		)

	Held to Maturity

	States and political subdivisions	22,618			(29		)	14,756			(322		)	37,374		(351		)

	Total	$	609,839		$	(3,852	)	$	53,122		$	(2,196	)	$	662,961	$	(6,048	)

Summary of realized gains on the sale of investment securities available for sale	'
	Net (losses) gains recognized on investment securities available for sale were as follows (in thousands):



		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Realized gains	$	921		$	1		$	1,246		$	15

	Realized losses	(4,167		)	—			(4,170		)	(1		)

	Impairment charges	—			—			(92		)	—

	Net (losses) gains	$	(3,246	)	$	1		$	(3,016	)	$	14

Schedule of remaining contractual maturities of securities included in the securities portfolio	'
	The amortized cost and fair value of investment securities as of September 30, 2014 by contractual maturity are shown below. Maturities may differ from contractual maturities in mortgage-backed securities because the mortgages underlying the securities may be called or repaid without any penalties. Therefore, mortgage-backed securities are not included in the maturity categories in the following maturity summary.



		Amortized			Fair
	(In thousands)	Cost			Value
	Available for sale:

	Due in one year or less	$	5,586		$	5,622

	Due after one year through five years	319,903			322,775

	Due after five years through ten years	38,026			38,347

	Due after ten years	358,914			375,357

	Equity securities	10,470			10,447

	Residential and commercial mortgage-backed securities	999,630			1,006,102

		1,732,529			1,758,650

	Held to maturity:

	Due in one year or less	25,437			25,476

	Due after one year through five years	252,723			255,282

	Due after five years through ten years	106,997			110,693

	Due after ten years	375,517			396,646

	Residential mortgage-backed securities	244,675			257,420

		1,005,349			1,045,517

	Total	$	2,737,878		$	2,804,167

Loans_Tables

Loans (Tables)	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Schedule of composition of loans	'
	Loans consist of the following at (in thousands):



			September 30,				December 31,
			2014				2013
	Commercial loans		$	3,078,590			$	1,281,377

	Commercial loans collateralized by assignment of lease payments		1,631,660				1,494,188

	Commercial real estate		2,646,895				1,647,700

	Residential real estate		516,873				314,440

	Construction real estate		230,999				141,253

	Indirect vehicle		273,038				262,632

	Home equity		262,977				268,289

	Other consumer loans		69,028				66,952

	Gross loans, excluding purchased credit-impaired and covered loans		8,710,060				5,476,831

	Purchased credit-impaired including covered loans		272,957				235,720

	Total loans		$	8,983,017			$	5,712,551

Contractual aging of the recorded investment in past due loans by class of loans	'
	The following table presents the contractual aging of the recorded investment in past due loans by class of loans as of September 30, 2014 and December 31, 2013 (in thousands):



			Current				30-59 Days				60-89 Days				Loans Past Due				Total				Total
							Past Due				Past Due				90 Days or More				Past Due
	30-Sep-14

	Commercial		$	3,071,130			$	5,804			$	653			$	1,003			$	7,460			$	3,078,590

	Commercial collateralized by assignment of lease payments		1,621,904				2,102				5,506				2,148				9,756				1,631,660

	Commercial real estate

	Healthcare		347,189				—				—				—				—				347,189

	Industrial		345,865				123				—				8,018				8,141				354,006

	Multifamily		416,171				386				298				1,192				1,876				418,047

	Retail		432,324				2,762				—				3,484				6,246				438,570

	Office		274,508				383				—				2,717				3,100				277,608

	Other		806,688				971				324				3,492				4,787				811,475

	Residential real estate		502,516				4,119				2,648				7,590				14,357				516,873

	Construction real estate		230,662				—				—				337				337				230,999

	Indirect vehicle		270,179				1,673				879				307				2,859				273,038

	Home equity		251,397				2,158				1,335				8,087				11,580				262,977

	Other consumer		69,009				14				2				3				19				69,028

	Gross loans, excluding purchased credit-impaired and covered loans		8,639,542				20,495				11,645				38,378				70,518				8,710,060

	Purchased credit-impaired including covered loans		166,364				3,909				2,464				100,220				106,593				272,957

	Total loans		$	8,805,906			$	24,404			$	14,109			$	138,598			$	177,111			$	8,983,017

	Non-performing loan aging		$	55,649			$	5,716			$	1,354			$	37,542			$	44,612			$	100,261

	31-Dec-13

	Commercial		$	1,273,302			$	5,952			$	626			$	1,497			$	8,075			$	1,281,377

	Commercial collateralized by assignment of lease payments		1,489,391				3,841				656				300				4,797				1,494,188

	Commercial real estate

	Healthcare		213,665				—				—				3,064				3,064				216,729

	Industrial		372,975				5,465				—				1,404				6,869				379,844

	Multifamily		302,456				3,078				181				2,226				5,485				307,941

	Retail		334,198				328				2,816				7,258				10,402				344,600

	Office		155,936				—				—				2,066				2,066				158,002

	Other		233,464				4,898				259				1,963				7,120				240,584

Residential real estate		302,362				1,422				1,030				9,626				12,078				314,440

Construction real estate		138,563				391				—				2,299				2,690				141,253

Indirect vehicle		259,488				2,210				657				277				3,144				262,632

Home equity		257,219				1,725				2,165				7,180				11,070				268,289

Other consumer		66,866				81				1				4				86				66,952

Gross loans, excluding covered loans		5,399,885				29,391				8,391				39,164				76,946				5,476,831

Covered loans		135,717				902				3,346				95,755				100,003				235,720

Total loans		$	5,535,602			$	30,293			$	11,737			$	134,919			$	176,949			$	5,712,551

Non-performing loan aging		$	56,339			$	14,325			$	3,283			$	32,614			$	50,222			$	106,561


Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing by class of loans	'
	The following table presents the recorded investment in non-accrual loans and loans past due ninety days or more and still accruing by class of loans, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



			September 30, 2014								December 31, 2013
							Loans past due								Loans past due
			Non-accrual				90 days or more				Non-accrual				90 days or more
							and still accruing								and still accruing
	Commercial		$	18,711			$	134			$	17,781			$	—

	Commercial collateralized by assignment of lease payments		2,402				1,738				4,276				291

	Commercial real estate:

	Healthcare		—				—				3,064				—

	Industrial		11,029				240				15,265				155

	Multifamily		6,968				—				5,145				—

	Office		5,433				—				11,703				—

	Retail		3,493				—				2,969				—

	Other		15,100				569				19,991				—

	Residential real estate		16,815				—				13,009				—

	Construction real estate		337				—				475				—

	Indirect vehicle		1,652				—				1,459				—

	Home equity		15,635				—				10,969				—

	Other consumer		5				—				9				—

	Total		$	97,580			$	2,681			$	106,115			$	446

Risk category of loans by class of loans	'
	The following tables present the risk category of loans by class of loans based on the most recent analysis performed, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



			Pass				Special				Substandard				Doubtful				Total
							Mention
	30-Sep-14

	Commercial		$	2,887,706			$	148,275			$	42,609			$	—			$	3,078,590

	Commercial collateralized by assignment of lease payments		1,626,794				51				4,815				—				1,631,660

	Commercial real estate

	Healthcare		347,189				—				—				—				347,189

	Industrial		326,390				6,970				20,646				—				354,006

	Multifamily		409,901				390				7,756				—				418,047

	Retail		423,436				1,608				13,526				—				438,570

	Office		266,644				2,573				8,391				—				277,608

	Other		784,978				9,411				17,086				—				811,475

	Construction real estate		224,884				5,778				337				—				230,999

	Total		$	7,297,922			$	175,056			$	115,166			$	—			$	7,588,144

	31-Dec-13

	Commercial		$	1,193,114			$	26,637			$	61,000			$	626			$	1,281,377

	Commercial collateralized by assignment of lease payments		1,486,899				553				6,736				—				1,494,188

	Commercial real estate

	Healthcare		189,705				21,186				2,774				3,064				216,729

	Industrial		345,236				5,328				29,280				—				379,844

	Multifamily		296,179				342				11,420				—				307,941

	Retail		316,420				10,660				17,520				—				344,600

	Office		151,393				2,682				3,927				—				158,002

	Other		217,188				349				23,047				—				240,584

	Construction real estate		139,847				540				866				—				141,253

	Total		$	4,335,981			$	68,277			$	156,570			$	3,690			$	4,564,518

Recorded investment in loan classes based on payment activity	'
	The following table presents the recorded investment in those loan classes based on payment activity, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



			Performing				Non-performing				Total
	30-Sep-14

	Residential real estate		$	500,058			$	16,815			$	516,873

	Indirect vehicle		271,386				1,652				273,038

	Home equity		247,342				15,635				262,977

	Other consumer		69,023				5				69,028

	Total		$	1,087,809			$	34,107			$	1,121,916

	31-Dec-13

	Residential real estate		$	301,431			$	13,009			$	314,440

	Indirect vehicle		261,173				1,459				262,632

	Home equity		257,320				10,969				268,289

	Other consumer		66,943				9				66,952

	Total		$	886,867			$	25,446			$	912,313

Loans individually evaluated for impairment by class of loans	'
	The following tables present loans individually evaluated for impairment by class of loans, excluding purchased credit-impaired and covered loans, as of September 30, 2014 and December 31, 2013 (in thousands):



			30-Sep-14
																			Three Months Ended							Nine Months Ended
			Unpaid				Recorded				Partial				Allowance for				Average				Interest			Average			Interest
			Principal				Investment				Charge-offs				Loan Losses				Recorded				Income			Recorded			Income
			Balance												Allocated				Investment				Recognized			Investment			Recognized
	With no related allowance recorded:

	Commercial		$	14,719			$	14,130			$	589			$	—			$	14,936			$	—		$	10,542		$	—

	Commercial collateralized by assignment of lease payments		1,857				1,857				—				—				2,026				31			2,542			81

	Commercial real estate:

	Healthcare		—				—				—				—				—				—			—			—

	Industrial		11,505				8,388				3,117				—				8,844				—			8,407			—

	Multifamily		2,409				2,409				—				—				2,492				7			1,963			45

	Retail		3,950				2,730				1,220				—				2,193				—			4,353			—

	Office		2,339				1,546				793				—				1,580				—			1,507			—

	Other		14,190				14,149				41				—				14,978				—			6,506			—

	Residential real estate		1,941				1,941				—				—				1,899				—			3,023			—

	Construction real estate		—				—				—				—				—				—			45			—

	Indirect vehicle		—				—				—				—				—				—			—			—

	Home equity		577				577				—				—				577				—			824			—

	Other consumer		—				—				—				—				—				—			—			—

	With an allowance recorded:

	Commercial		4,720				4,720				—				2,250				5,353				—			16,266			—

	Commercial collateralized by assignment of lease payments		4,354				4,354				—				238				3,725				58			1,772			82

	Commercial real estate:

	Healthcare		—				—				—				—				—				—			—			—

	Industrial		3,047				3,042				5				333				3,140				—			6,482			—

	Multifamily		6,644				5,673				971				1,311				6,335				18			6,467			123

	Retail		10,181				7,797				2,384				690				8,637				—			8,232			—

	Office		2,298				1,946				352				576				2,186				—			2,532			—

	Other		1,482				1,397				85				243				1,674				4			10,135			12

	Residential real estate		16,361				13,870				2,491				3,196				14,646				—			14,549			—

	Construction real estate		2,707				337				2,370				161				431				—			463			—

Indirect vehicle		336				212				124				27				391				—			336			—

Home equity		26,592				24,985				1,607				1,690				25,771				—			25,346			—

Other consumer		—				—				—				—				—				—			—			—

Total		$	132,209			$	116,060			$	16,149			$	10,715			$	121,814			$	118		$	132,292		$	343





		31-Dec-13
		Unpaid				Recorded				Partial				Allowance for				Average				Interest
		Principal				Investment				Charge-offs				Loan Losses				Recorded				Income
		Balance												Allocated				Investment				Recognized
With no related allowance recorded:

Commercial		$	8,903			$	8,903			$	—			$	—			$	8,259			$	—

Commercial collateralized by assignment of lease payments		3,401				3,401				—				—				1,030				6

Commercial real estate:

Healthcare		—				—				—				—				2,698				—

Industrial		7,560				7,560				—				—				8,900				—

Multifamily		1,166				1,166				—				—				758				11

Retail		4,466				4,466				—				—				3,628				—

Office		559				527				32				—				922				—

Other		2,963				2,963				—				—				4,380				—

Residential real estate		4,234				4,234				—				—				3,260				—

Construction real estate		—				—				—				—				—				—

Indirect vehicle		—				—				—				—				—				—

Home equity		577				577				—				—				797				—

Other consumer		—				—				—				—				—				—

With an allowance recorded:

Commercial		8,923				8,919				4				4,284				13,476				4

Commercial collateralized by assignment of lease payments		1,060				1,060				—				144				1,279				192

Commercial real estate:

Healthcare		3,186				3,064				122				382				8,189				—

Industrial		7,707				7,705				2				3,038				3,699				—

Multifamily		5,374				5,374				—				1,661				6,443				340

Retail		14,169				12,428				1,741				1,511				12,885				280

Office		2,442				2,442				—				791				4,045				—

Other		20,367				17,029				3,338				796				12,868				20

Residential real estate		13,496				12,710				786				3,119				12,966				245

Construction real estate		475				475				—				227				1,603				—

Indirect vehicle		173				123				50				57				86				—

Home equity		23,840				23,395				445				1,358				24,283				772

Other consumer		—				—				—				—				—				—

Total		$	135,041			$	128,521			$	6,520			$	17,368			$	136,454			$	1,870

Schedule of loans that have been restructured classified as performing and non-performing	'
	The following table presents loans that have been restructured during the three months ended September 30, 2014 (dollars in thousands):



			30-Sep-14
			Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
			Loans		Investment				Investment				Specific Reserves
	Non-Performing:

	Residential real estate		2		$	411			$	411			$	246

	Indirect vehicle		15		95				95				38

	Home equity		6		604				604				104

	Total		23		$	1,110			$	1,110			$	388


	The following table presents loans that have been restructured during the nine months ended September 30, 2014 (dollars in thousands):


			30-Sep-14
			Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
			Loans		Investment				Investment				Specific Reserves
	Performing:

	Indirect vehicle		1		$	5			$	5			$	—

	Home equity		6		1,883				1,883				—

	Total		7		$	1,888			$	1,888			$	—

	Non-Performing:

	Commercial		1		$	263			$	263			$	85

	Commercial real estate:

	Multifamily		1		158				158				40

	Residential real estate		6		1,850				1,850				246

	Indirect vehicle		44		262				262				65

	Home equity		13		1,667				1,667				104

	Total		65		$	4,200			$	4,200			$	540

	The following table presents loans that have been restructured during the three months ended September 30, 2013 (dollars in thousands):



			30-Sep-13
			Number of			Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
			Loans			Investment				Investment				Specific Reserves
	Performing:

	Residential real estate		1			$	95			$	95			$	—

	Home equity		1			19				19				—

	Total		2			$	114			$	114			$	—

Non-Performing:

Commercial real estate:

Healthcare		1			$	3,164			$	3,164			$	496

Multifamily		1			436				436				119

Retail		1			205				205				56

Residential real estate		1			394				394				—

Indirect vehicle		17			113				89				24

Home equity		5			397				397				—

Total		26			$	4,709			$	4,685			$	695


The following table presents loans that have been restructured during the nine months ended September 30, 2013 (dollars in thousands):



		30-Sep-13
		Number of		Pre-Modification Recorded				Post-Modification Recorded				Charge-offs and
		Loans		Investment				Investment				Specific Reserves
Performing:

Multifamily		1		$	601			$	601			$	—

Residential real estate		5		854				854				—

Home equity		7		723				723				—

Total		13		$	2,178			$	2,178			$	—

Non-Performing:

Commercial		2		$	1,251			$	1,251			$	673

Commercial real estate:
Healthcare		1		3,164				3,164				496

Industrial		4		2,570				2,570				1,425

Multifamily		2		623				623				169

Retail		3		862				862				235

Other		1		84				84				23

Residential real estate		6		1,149				1,149				—

Indirect vehicle		20		127				103				24

Home equity		25		3,333				3,333				—

Total		64		$	13,163			$	13,139			$	3,045

Troubled debt restructuring activity rollforward	'
	The following tables present the troubled debt restructurings activity during the nine months ended September 30, 2014 (in thousands):


			Performing				Non-performing
	Beginning balance		$	29,430			$	24,952

	Additions		1,888				4,200

	Charge-offs		(368		)		(2,147		)
	Principal payments, net		(2,436		)		(3,829		)
	Removals		(8,573		)		(3,572		)
	Transfer to other real estate owned		—				(221		)

	Transfer from/to performing		6,292				9,356

	Transfer from/to non-performing		(9,356		)		(6,292		)
	Ending balance		$	16,877			$	22,447

Type of financing receivable modifications and restructuring	'
	The following table presents the type of modification for loans that have been restructured during the nine months ended September 30, 2014 (in thousands):


		30-Sep-14

		Extended				Extended
		Maturity,				Maturity and				Delay in
		Amortization				Delay in Payments				Payments or
		and Reduction				or Reduction of				Reduction of
		of Interest Rate				Interest Rate				Interest Rate				Total
	Commercial	$	—			$	263			$	—			$	263

	Commercial real estate:
	Multifamily	—				158				—				158

	Residential real estate	411				1,269				170				1,850

	Indirect vehicle	—				—				267				267

	Home equity	1,793				1,210				547				3,550

	Total	$	2,204			$	2,900			$	984			$	6,088

Allowance activity for loan losses by portfolio segment based on impairment method	'
	The following table presents the activity in the allowance for credit losses, balance in allowance for credit losses and recorded investment in loans by portfolio segment and based on impairment method as of September 30, 2014 and 2013 (in thousands):



			Commercial				Commercial				Commercial				Residential				Construction				Indirect			Home			Other consumer				Unfunded				Total
							collateralized by				real estate				real estate				real estate				vehicle			equity							commitments
							assignment of
							lease payments
	30-Sep-14

	Allowance for credit losses:

	Three Months Ended
	Beginning balance		$	23,154			$	9,425			$	43,933			$	7,495			$	4,613			$	1,727		$	8,281		$	2,282			$	2,995			$	103,905

	Allowance for unfunded credit commitments acquired through business combination		—				—				—				—				—				—			—			—				1,261				1,261

	Utilization of allowance for unfunded credit commitments		—				—				—				—				—				—			—			—				(637		)		(637		)

	Charge-offs		606				—				1,027				740				5				1,043			566			497				—				4,484

	Recoveries		564				425				2,227				4				25				402			46			65				—				3,758

	Provision		2,181				(484		)		(4,193		)		534				2,174				643			1,836			(65		)		483				3,109

	Ending balance		$	25,293			$	9,366			$	40,940			$	7,293			$	6,807			$	1,729		$	9,597		$	1,785			$	4,102			$	106,912


	Nine Months Ended
	Beginning balance		$	23,461			$	9,159			$	51,628			$	8,872			$	6,856			$	1,662		$	8,478		$	1,630			$	1,716			$	113,462

	Allowance for unfunded credit commitments acquired through business combination		—				—				—				—				—				—			—			—				1,261				1,261

	Utilization of allowance for unfunded credit commitments		—				—				—				—				—				—			—			—				(637		)		(637		)

	Charge-offs		1,142				40				9,910				1,438				75				2,546			2,002			1,582				—				18,735

	Recoveries		2,888				555				3,279				529				201				1,283			306			211				—				9,252

	Provision		86				(308		)		(4,057		)		(670		)		(175		)		1,330			2,815			1,526				1,762				2,309

	Ending balance		$	25,293			$	9,366			$	40,940			$	7,293			$	6,807			$	1,729		$	9,597		$	1,785			$	4,102			$	106,912

	Ending allowance balance attributable to loans:

	Individually evaluated for impairment		$	2,250			$	238			$	3,153			$	3,196			$	161			$	27		$	1,690		$	—			$	1,316			$	12,031

	Collectively evaluated for impairment		22,433				9,128				37,156				4,097				6,641				1,702			7,907			1,785				2,786				93,635

	Acquired and accounted for under ASC 310-30 (1)		610				—				631				—				5				—			—			—				—				1,246

	Total ending allowance balance		$	25,293			$	9,366			$	40,940			$	7,293			$	6,807			$	1,729		$	9,597		$	1,785			$	4,102			$	106,912

	Loans:

	Individually evaluated for impairment		$	18,850			$	6,211			$	49,077			$	15,811			$	337			$	212		$	25,562		$	—			$	—			$	116,060

	Collectively evaluated for impairment		3,059,740				1,625,449				2,597,818				501,062				230,662				272,826			237,415			69,028				—				8,594,000

	Acquired and accounted for under ASC 310-30 (1)		112,066				—				110,357				3,362				24,274				—			115			22,783				—				272,957

	Total ending loans balance		$	3,190,656			$	1,631,660			$	2,757,252			$	520,235			$	255,273			$	273,038		$	263,092		$	91,811			$	—			$	8,983,017




		Commercial				Commercial				Commercial				Residential				Construction				Indirect			Home			Other consumer				Unfunded				Total
						collateralized by				real estate				real estate				real estate				vehicle			equity							commitments
						assignment of
						lease payments
30-Sep-13

Allowance for credit losses:

Three Months Ended
Beginning balance		$	27,277			$	8,529			$	60,014			$	8,121			$	8,695			$	1,537		$	8,206		$	1,306			$	1,812			$	125,497

Transfer to (from) allowance for unfunded credit commitments		—				—				—				—				—				—			—			—				—				—

Charge-offs		1,686				—				1,236				713				26				572			437			485				—				5,155

Recoveries		579				—				966				48				420				372			228			74				—				2,687

Provision		(45		)		721				(3,983		)		347				(735		)		293			(152		)	368				(118		)		(3,304		)

Ending balance		$	26,125			$	9,250			$	55,761			$	7,803			$	8,354			$	1,630		$	7,845		$	1,263			$	1,694			$	119,725


Nine Months Ended
Beginning balance		$	24,943			$	7,755			$	61,056			$	6,941			$	11,222			$	1,324		$	9,401		$	1,562			$	4,075			$	128,279

Transfer to (from) allowance for unfunded credit commitments		—				—				—				—				500				—			—			—				(500		)		—

Charge-offs		3,030				—				5,131				2,074				855				1,930			2,547			1,501				—				17,068

Recoveries		1,808				1,131				5,353				461				827				1,111			442			185				—				11,318

Provision		2,404				364				(5,517		)		2,475				(3,340		)		1,125			549			1,017				(1,881		)		(2,804		)

Ending balance		$	26,125			$	9,250			$	55,761			$	7,803			$	8,354			$	1,630		$	7,845		$	1,263			$	1,694			$	119,725

Ending allowance balance attributable to loans:

Individually evaluated for impairment		$	4,389			$	285			$	7,464			$	3,033			$	240			$	—		$	781		$	—			$	657			$	16,849

Collectively evaluated for impairment		20,871				8,965				46,412				4,663				8,114				1,630			7,064			1,263				1,037				100,019

Acquired and accounted for under ASC 310-30 (1)		865				—				1,885				107				—				—			—			—				—				2,857

Total ending allowance balance		$	26,125			$	9,250			$	55,761			$	7,803			$	8,354			$	1,630		$	7,845		$	1,263			$	1,694			$	119,725


Loans:

Individually evaluated for impairment		$	19,836			$	2,330			$	60,600			$	15,851			$	1,622			$	106		$	23,278		$	—			$	—			$	123,623

Collectively evaluated for impairment		1,134,376				1,466,484				1,577,768				291,699				134,524				257,634			251,206			57,418				—				5,171,109

Acquired and accounted for under ASC 310-30 (1)		35,649				—				159,799				5,982				61,446				—			110			29,014				—				292,000

Total ending loans balance		$	1,189,861			$	1,468,814			$	1,798,167			$	313,532			$	197,592			$	257,740		$	274,594		$	86,432			$	—			$	5,586,732


(1) Loans acquired in business combinations and accounted for under ASC Subtopic 310-30 “Receivables — Loans and Debt Securities Acquired with Deteriorated Credit Quality.”
Changes in the accretable yield for purchased credit-impaired loans	'
	Changes in the accretable yield for loans acquired and accounted for under ASC 310-30 were as follows for the three and nine months ended September 30, 2014 and 2013 (in thousands):



			Three Months Ended								Nine Months Ended
			September 30,								September 30,
			2014				2013				2014				2013
	Balance at beginning of period		$	1,218			$	6,360			$	2,337			$	5,685

	Purchases		3,252				—				3,252				—

	Accretion		2,372				(2,427		)		679				(2,859		)

	Other		931				—				1,505				1,107

	Balance at end of period		$	7,773			$	3,933			$	7,773			$	3,933

Purchased loans disclosures	'
	The carrying amount of loans acquired through a business combination by loan type are as follows (in thousands):



	30-Sep-14		Purchased				Purchased Non-Impaired				Total
			Impaired				Loans
			Loans
	Covered loans:

	Commercial related (1)		$	1,410			$	2,255			$	3,665

	Commercial		827				1,308				2,135

	Commercial real estate		32,857				23,531				56,388

	Construction real estate		—				3,164				3,164

	Other		1,655				22,240				23,895

	Total covered loans		$	36,749			$	52,498			$	89,247

	Estimated (payable) receivable amount from the FDIC under the loss-share agreement (2)		$	(2,892	)		$	4,866			$	1,974

	Non-covered loans:

	Commercial related (3)		$	4,856			$	12,913			$	17,769

	Commercial loans		101,410				1,736,188				1,837,598

	Commercial loans collateralized by assignment of lease payments		—				133,539				133,539

	Commercial real estate		53,969				1,002,229				1,056,198

	Construction real estate		21,110				161,115				182,225

	Other		2,365				237,737				240,102

	Total non-covered loans		$	183,710			$	3,283,721			$	3,467,431



	-1	Covered commercial related loans include commercial, commercial real estate and construction real estate loans acquired in connection with the Benchmark FDIC-assisted transactions.

	-2	Estimated reimbursable amounts from the FDIC under the loss-share agreement exclude $231 thousand in amounts due to the FDIC related to covered other real estate owned.

	-3	Non-covered commercial related loans include commercial, commercial real estate and construction real estate for InBank and Heritage.

Goodwill_and_Intangibles_Table

Goodwill and Intangibles (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Changes in the carrying amount of core deposit and client relationship intangibles	'
	The following table presents the changes in the carrying amount of core deposit and client relationship intangibles, gross carrying amount, accumulated amortization, and net book value as of September 30, 2014 (in thousands):



		Nine Months Ended
		September 30, 2014
	Balance at beginning of period	$	23,428

	Amortization expense	(3,884		)
	Other intangibles from business combination	25,000

	Balance at end of period	$	44,544


	Gross carrying amount	$	79,368

	Accumulated amortization	(34,824		)
	Net book value	$	44,544

Estimated future amortization expense of other intangible assets	'
	The following presents the estimated future amortization expense of other intangible assets (in thousands):



	Year ending December 31,	Amount
	2014	$	2,114

	2015	7,197

	2016	6,162

	2017	5,450

	2018	4,874

	Thereafter	18,747

		$	44,544

Deposits_Tables

Deposits (Tables)	9 Months Ended
	Sep. 30, 2014
Deposits [Abstract]	'
Schedule of composition of deposits	'
	The composition of deposits was as follows (in thousands):



		September 30,		December 31,
		2014		2013
	Demand deposit accounts, noninterest bearing	$	3,807,554	$	2,375,863

	NOW and money market accounts	4,197,166		2,682,419

	Savings accounts	931,985		855,394

	Certificates of deposit, $100,000 or more	1,544,267		827,413

	Other certificates of deposit	757,576		640,170

	Total	$	11,238,548	$	7,381,259

ShortTerm_Borrowings_Tables

Short-Term Borrowings (Tables)	9 Months Ended
	Sep. 30, 2014
Short-term Debt [Abstract]	'
Summary of short-term borrowings	'
	Short-term borrowings were as follows as of September 30, 2014 and December 31, 2013 (dollars in thousands):



		30-Sep-14				31-Dec-13
		Weighted Average Cost		Amount		Weighted Average Cost		Amount
	Customer repurchase agreements	0.21	%	$	248,150	0.2	%	$	193,389

	Federal Home Loan Bank advances	0.07		350,000		0.17		300,000

	Federal funds purchased	0.45		54,010		—		—

	Line of credit	2		15,000		—		—

		0.2	%	$	667,160	0.18	%	$	493,389

Junior_Subordinated_Notes_Issu1

Junior Subordinated Notes Issued to Capital Trusts (Tables)

9 Months Ended

Sep. 30, 2014

JUNIOR SUBORDINATED NOTES ISSUED TO CAPITAL TRUSTS

Outstanding junior subordinated notes and the related trust preferred securities issued by each trust

The table below summarizes the outstanding junior subordinated notes and the related trust preferred securities issued by each trust as of September 30, 2014 (in thousands):

Coal City

MB Financial

Capital Trust I

Capital Trust II

Capital Trust III

Capital Trust IV

Junior Subordinated Notes:

Principal balance

25,774

36,083

10,310

20,619

Annual interest rate

3-mo LIBOR + 1.80%

3-mo LIBOR + 1.40%

3-mo LIBOR + 1.50%

3-mo LIBOR + 1.52%

Stated maturity date

September 1, 2028

September 15, 2035

September 23, 2036

September 15, 2036

Call date

September 1, 2008

December 15, 2010

September 23, 2011

September 15, 2011

Trust Preferred Securities:

Face Value

25,000

35,000

10,000

20,000

Annual distribution rate

3-mo LIBOR + 1.80%

3-mo LIBOR + 1.40%

3-mo LIBOR + 1.50%

3-mo LIBOR + 1.52%

Issuance date

July 1998

August 2005

July 2006

August 2006

Distribution dates (1)

Quarterly

MB Financial

FOBB

TAYC

Capital Trust V

Capital Trust VI

Statutory Trust III (2)

Capital Trust II (3)

Junior Subordinated Notes:

Principal balance

30,928

23,196

5,155

41,238

Annual interest rate

3-mo LIBOR + 1.30%

3-mo LIBOR + 2.80%

3-mo LIBOR + 2.68%

Stated maturity date

December 15, 2037

October 30, 2037

January 23, 2034

June 17, 2034

Call date

December 15, 2012

October 30, 2012

January 23, 2009

June 17, 2009

Trust Preferred Securities:

Face Value

30,000

22,500

5,000

40,000

Annual distribution rate

3-mo LIBOR + 1.30%

3-mo LIBOR + 2.80%

3-mo LIBOR + 2.68%

Issuance date

September 2007

October 2007

December 2003

June 2004

Distribution dates (1)

Quarterly

-1

All distributions are cumulative and paid in cash.

-2

-3

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of outstanding financial instruments, contractual amounts of off-balance sheet credit risk	'
	At September 30, 2014 and December 31, 2013, the following financial instruments were outstanding, the contractual amounts of which represent off-balance sheet credit risk (in thousands):



		Contractual Amount
		September 30, 2014		December 31, 2013
	Commitments to extend credit:

	Home equity lines	$	216,130	$	208,581

	Other commitments	2,714,127		1,214,391

	Letters of credit:

	Standby	130,057		69,556

	Commercial	6,370		708

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Financial assets and financial liabilities measured at fair value on a recurring basis	'
	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (in thousands):



			Total				Quoted Prices in				Significant Other				Significant
							Active Markets for				Observable Inputs				Unobservable Inputs
							Identical Assets				(Level 2)				(Level 3)
							(Level 1)
	30-Sep-14

	Financial assets

	Securities available for sale:

	U.S Government sponsored agencies and enterprises		$	65,829			$	—			$	65,829			$	—

	States and political subdivisions		409,033				—				408,526				507

	Residential mortgage-backed securities		801,940				—				801,392				548

	Commercial mortgage-backed securities		204,162				—				204,162				—

	Corporate bonds		267,239				—				266,940				299

	Equity securities		10,447				10,447				—				—

	Loans held for sale		553,627				—				553,627				—

	Mortgage servicing rights		249,376				—				—				249,376

	Assets held in trust for deferred compensation		16,408				16,408				—				—

	Derivative financial instruments		33,953				138				30,288				3,527

	Financial liabilities

	Other liabilities (1)		16,062				16,062				—				—

	Derivative financial instruments		34,492				2,112				32,380				—

	31-Dec-13

	Financial assets

	Securities available for sale:

	U.S. Government sponsored agencies and enterprises		$	52,068			$	—			$	52,068			$	—

	States and political subdivisions		19,143				—				19,143				—

	Residential mortgage-backed securities		701,233				—				700,542				691

	Commercial mortgage-backed securities		52,941				—				52,941				—

	Corporate bonds		283,070				—				277,905				5,165

	Equity securities		10,457				10,457				—				—

	Loans held for sale		629				—				629				—

	Assets held in trust for deferred compensation		10,679				10,679				—				—

	Derivative financial instruments		18,645				—				18,645				—

Financial liabilities

Other liabilities (1)		10,569				10,569				—				—

Derivative financial instruments		18,632				—				18,632				—



(1)	Liabilities associated with assets held in trust for deferred compensation

Financial assets measured at fair value on a recurring and non-recurring basis, unobservable inputs used	'
	The following table presents additional information about the unobservable inputs used in the fair value measurement of financial assets measured on a nonrecurring basis that were categorized within the Level 3 of the fair value hierarchy:



		Fair Value at			Valuation	Unobservable
		September 30, 2014			Technique	Input	Range
		(in thousands)
	Impaired loans	$	55,346		Appraisal of collateral	Appraisal adjustments - sales costs	5% - 10%

	Foreclosed assets	41,333			Appraisal of collateral	Appraisal adjustments - sales costs	5% - 10%

	The following table presents additional information about the unobservable inputs used in the fair value measurement of financial assets measured on a recurring basis that were categorized within the Level 3 of the fair value hierarchy:


		Fair Value at
		September 30, 2014			Valuation Technique	Unobservable Input	Range
		(in thousands)
	States and political subdivisions	$	507		Discounted cash flows	Credit assumption	45% Loss

	Residential mortgage-backed securities	548			Discounted cash flows	Constant pre-payment rates

						(CPR) assumption	1% - 3% CPR
	Corporate bonds	299			Discounted cash flows	Credit assumption	20% Loss

	Mortgage servicing rights	249,376			Discounted cash flows	CPR	4.3% - 23.7%

						Discount rate	10.00 - 16.25
						Maturity (months)	39 - 457
						Delinquencies	0.00 - 25.00
						Costs to service	$60 - $392
	Derivative financial instruments (mortgage interest	3,527			Sales cash flows	Expected closing ratio	28.58 - 94.00

	rate lock commitments)					Expected delivery price	96.58 - 109.54
Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block]	'
	Key economic assumptions used in the measuring of the fair value of the mortgage servicing rights and the sensitivity of the fair value to immediate adverse changes in those assumptions at September 30, 2014 are presented in the following table. This table does not take into account the derivatives used to economically hedge the mortgage servicing rights.



	(dollars in thousands, except for weighted average cost to service)	30-Sep-14
	Weighted average prepayment speed (CPR)	9.1		%
	Impact on fair value of 10% adverse change	$	(8,665	)
	Impact on fair value of 20% adverse change	(16,778		)

	Weighted average discount rate	10.11		%
	Impact on fair value of 10% adverse change	$	(10,325	)
	Impact on fair value of 20% adverse change	(19,857		)

	Weighted average delinquency rate	1.35		%
	Impact on fair value of 10% adverse change	$	(1,085	)
	Impact on fair value of 20% adverse change	(1,755		)

	Weighted average costs to service	$	70

	Impact on fair value of 10% adverse change	(3,491		)
	Impact on fair value of 20% adverse change	(6,981		)
Financial assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)	'
	The following table presents additional information about financial assets measured at fair value on a recurring basis for which the Company used significant unobservable inputs (Level 3):



			Nine Months Ended
			September 30,
			2014				2013				2014				2013			2014			2013
	(in thousands)		Investment Securities								Mortgage Servicing Rights							Derivatives
	Balance, beginning of period		$	5,856			$	6,071			$	—			$	—		$	—		$	—

	Acquired through business combination		507				—				232,783				—			5,922			—

	Purchases		—				—				489				—			—			—

	Originations		—				—				8,587				—			—			—

	Other comprehensive income		(71		)		(59		)		7,517				—			(2,395		)	—

	Principal payments		(281		)		(118		)		—				—			—			—

	Impairment charge		(92		)		—				—				—			—			—

	Transferred out of Level 3		(4,565		)		—				—				—			—			—

	Balance, ending of period		$	1,354			$	5,894			$	249,376			$	—		$	3,527		$	—

Assets measured at fair value on a nonrecurring basis	'
	Assets measured at fair value on a nonrecurring basis as of September 30, 2014 and December 31, 2013 are included in the table below (in thousands):



			Total				Quoted Prices in Active				Significant Other				Significant
							Markets for Identical				Observable Inputs				Unobservable Inputs
							Assets (Level 1)				(Level 2)				(Level 3)
	30-Sep-14

	Financial assets:

	Impaired loans		$	55,346			$	—			$	—			$	55,346

	Non-financial assets:
	Foreclosed assets		41,333				—				—				41,333

	31-Dec-13

	Financial assets:

	Impaired loans		$	77,497			$	—			$	—			$	77,497

	Non-financial assets:
	Foreclosed assets		44,601				—				—				44,601

Estimated fair values of financial instruments	'
	The estimated fair values of financial instruments are as follows (in thousands):


			30-Sep-14
			Carrying Amount				Estimated Fair Value			Quoted Prices in Active			Significant Other			Significant
										Markets for Identical			Observable Inputs			Unobservable Inputs
										Assets (Level 1)			(Level 2)			(Level 3)

	Financial Assets:
	Cash and due from banks		$	267,405			$	267,405		$	267,405		$	—		$	—

	Interest earning deposits with banks		179,391				179,391			179,391			—			—

	Investment securities available for sale		1,758,650				1,758,650			10,447			1,746,849			1,354

	Investment securities held to maturity		1,005,349				1,045,517			—			1,045,517			—

	Non-marketable securities - FHLB and FRB stock		75,569				75,569			—			—			75,569

	Loans held for sale		553,627				553,627			—			553,627			—

	Loans, net		8,880,207				8,871,886			—			—			8,871,886

	Accrued interest receivable		47,956				47,956			47,956			—			—

	Derivative financial instruments		33,953				33,953			138			30,288			3,527

	Financial Liabilities:
	Noninterest bearing deposits		$	3,807,554			$	3,807,554		$	3,807,554		$	—		$	—

	Interest bearing deposits		7,430,994				7,438,126			—			—			7,438,126

	Short-term borrowings		667,160				667,156			—			—			667,156

	Long-term borrowings		77,269				80,628			—			—			80,628

	Junior subordinated notes issued to capital trusts		185,681				134,011			—			—			134,011

	Accrued interest payable		3,420				3,420			3,420			—			—

	Derivative financial instruments		34,492				34,492			2,112			32,380			—





			31-Dec-13
			Carrying Amount				Estimated Fair Value			Quoted Prices in Active			Significant Other			Significant
										Markets for Identical			Observable Inputs			Unobservable Inputs
										Assets (Level 1)			(Level 2)			(Level 3)
	Financial Assets:

	Cash and due from banks		$	205,193			$	205,193		$	205,193		$	—		$	—

	Interest earning deposits with banks		268,266				268,266			268,266			—			—

	Federal funds sold		42,950				42,950			42,950			—			—

	Investment securities available for sale		1,118,912				1,118,912			10,457			1,102,599			5,856

	Investment securities held to maturity		1,182,533				1,198,929			—			1,198,929			—

	Non-marketable securities - FHLB and FRB stock		51,417				51,417			—			—			51,417

Loans held for sale		629				629			—			629			—

Loans, net		5,600,805				5,583,759			—			—			5,583,759

Accrued interest receivable		36,593				36,593			36,593			—			—

Derivative financial instruments		18,645				18,645			—			18,645			—

Financial Liabilities:

Non-interest bearing deposits		$	2,375,863			$	2,375,863		$	2,375,863		$	—		$	—

Interest bearing deposits		5,005,396				5,012,928			—			—			5,012,928

Short-term borrowings		493,389				493,384			—			—			493,384

Long-term borrowings		62,159				66,301			—			—			66,301

Junior subordinated notes issued to capital trusts		152,065				101,247			—			—			101,247

Accrued interest payable		2,042				2,042			2,042			—			—

Derivative financial instruments		18,632				18,632			—			18,632			—

Stock_Incentive_Plans_Tables

Stock Incentive Plans (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of the impact of share-based payment plans in the financial statements	'
	The following table summarizes the impact of the Company’s share-based payment plans in the financial statements for the periods shown (in thousands):



		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2014				2013			2014			2013
	Total cost of share-based payment plans during the period	$	2,338			$	1,388		$	6,593		$	3,860

	Amount of related income tax benefit recognized in income	922				548			2,592			$	1,530

Additional information related to options outstanding	'
	The following table summarizes stock options outstanding for the nine months ended September 30, 2014:



		Number of			Weighted			Weighted		Aggregate
		Options			Average			Average		Intrinsic
					Exercise			Remaining		Value
					Price			Contractual		(in thousands)
								Term
								(In Years)
	Options outstanding as of December 31, 2013	2,443,752			$	27.57

	Granted	221,216			29.47

	Exercised	(163,138	)		18.9

	Expired or cancelled	(156,104	)		35.78

	Forfeited	(26,313	)		21.81

	Options outstanding as of September 30, 2014	2,319,413			$	27.87		4.66		$	6,755

	Options exercisable as of September 30, 2014	1,742,430			$	28.91		3.49		$	4,684

Assumptions used for options granted	'
	The following assumptions were used for options granted during the nine months ended September 30, 2014:


		September 30, 2014
	Risk-free interest rate	1.83		%
	Expected volatility of Company’s stock	23.1		%
	Expected dividend yield	1.65		%
	Expected life of options	5.6 years

	Weighted average fair value per option of options granted during the year	$	5.93

Summary of changes in restricted shares	'
	The following is a summary of changes in restricted shares and units for the nine months ended September 30, 2014:



		Number of			Weighted
		Shares and Units			Average
					Grant Date
					Fair Value
	Shares Outstanding at December 31, 2013	685,719			$	22.59

	Granted	442,251			29.22

	Vested	(298,533	)		20.41

	Forfeited	(17,611	)		24.58

	Shares Outstanding at September 30, 2014	811,826			$	26.96

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Summary of derivative financial instruments	'
	The Company’s derivative financial instruments are summarized below as of September 30, 2014 and December 31, 2013 (in thousands):



			Asset Derivatives																Liability Derivatives
			30-Sep-14								31-Dec-13								30-Sep-14						31-Dec-13
			Notional				Estimated				Notional				Estimated				Notional			Estimated			Notional			Estimated
			Amount				Fair Value				Amount				Fair Value				Amount			Fair Value			Amount			Fair Value
	Derivative instruments designated as hedges of fair value:

	Interest rate swap contracts (1)		$	238,000			$	3,512			$	—			$	—			$	317,208		$	(5,399	)	$	238		$	(23	)

	Stand-alone derivative instruments (2)

	Interest rate swap contracts		983,309				24,441				550,883				17,298				984,081			(24,787		)	551,798			(17,350		)

	Interest rate options contracts		56,105				401				83,907				323				56,105			(401		)	84,953			(323		)

	Foreign exchange contracts		22,866				1,270				31,361				1,006				20,392			(1,138		)	47,760			(935		)

	Spot foreign exchange contracts		768				9				—				—				1,256			(18		)	—			—

	Mortgage related derivatives		1,004,855				4,320				1,783				18				723,233			(2,749		)	250			(1		)

	Total non-hedging derivative instruments		2,067,903				30,441				667,934				18,645				1,785,067			(29,093		)	684,761			(18,609		)

	Total		$	2,305,903			$	33,953			$	667,934			$	18,645			$	2,102,275		$	(34,492	)	$	684,999		$	(18,632	)


	(1) Hedged mortgage servicing rights asset and fixed-rate commercial real estate loans
	(2) These portfolio swaps are not designated as hedging instruments under ASC Topic 815.
Schedule of the amount of gains and losses on derivative contracts designated as hedges and not designated as hedges	'
	Amounts included in the other income in the consolidated statements of operations related to derivative financial instruments were as follows (in thousands):



			Three Months Ended								Nine Months Ended
			September 30,								September 30,
			2014				2013				2014				2013
	Derivative instruments designated as hedges of fair value:

	Interest rate swap contracts		$	(1,869	)		$	(1	)		$	(1,871	)		$	9

	Stand-alone derivative instruments:

	Interest rate swap contracts		(312		)		7				(294		)		30

	Interest rate options contracts		—				—				—				—

	Foreign exchange contracts		4				(12		)		61				(7		)

	Spot foreign exchange contracts		(17		)		—				(9		)		—

	Mortgage related derivatives		1,514				(16		)		1,554				(80		)

	Total non-hedging derivative instruments		1,189				(21		)		1,312				(57		)

	Total		$	(680	)		$	(22	)		$	(559	)		$	(48	)
Schedule of Derivative Instruments [Table Text Block]	'


			Financial Assets																Financial Liabilities
			Net Amount Recognized				Financial Instruments				Collateral				Net Amount				Net Amount Recognized			Financial Instruments			Collateral			Net Amount
	Derivatives:
	Counterparty A		$	172			$	(172	)		$	—			$	—			$	8,578		$	(172	)	$	(8,406	)	$	—

	Counterparty B		3,792				(3,792		)		—				—				8,680			(3,792		)	(4,888		)	—

	Counterparty C		5				(5		)		—				—				4,125			(5		)	(4,120		)	—

	Other counterparties		4,144				(3,755		)		—				389				9,267			(3,755		)	(5,134		)	378

	Total derivatives		8,113				(7,724		)		—				389				30,650			(7,724		)	(22,548		)	378

	Repurchase agreements		—				—				—				—				248,150			—			(248,150		)	—

	Total		$	8,113			$	(7,724	)		$	—			$	389			$	278,800		$	(7,724	)	$	(270,698	)	$	378



			Financial Assets																Financial Liabilities
			Net Amount Recognized				Financial Instruments				Collateral				Net Amount				Net Amount Recognized			Financial Instruments			Collateral			Net Amount
	Derivatives:
	Counterparty A		$	883			$	(883	)		$	—			$	—			$	10,669		$	(883	)	$	(9,786	)	$	—

	Counterparty B		1,836				(412		)		—				1,424				412			(412		)	—			—

	Counterparty C		2,380				(1,612		)		—				768				1,612			(1,612		)	—			—

	Other counterparties		776				(5		)		—				771				60			(5		)	—			55

	Total derivatives		5,875				(2,912		)		—				2,963				12,753			(2,912		)	(9,786		)	55

	Repurchase agreements		—				—				—				—				193,389			—			(193,389		)	—

	Total		$	5,875			$	(2,912	)		$	—			$	2,963			$	206,142		$	(2,912	)	$	(203,175	)	$	55

	Information about the Company's financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2013 is summarized below (in thousands):



			Financial Assets												Financial Liabilities
			Gross Amount Recognized				Gross Amount Offset				Net Amount Recognized				Gross Amount Recognized				Gross Amount Offset			Net Amount Recognized
	Derivatives:
	Interest rate swaps, caps and floors		$	5,792			$	—			$	5,792			$	11,904			$	—		$	11,904

	Foreign currency forward contracts		80				—				80				848				—			848

	Mortgage related derivatives		3				—				3				1				—			1

	Total derivatives		5,875				—				5,875				12,753				—			12,753

	Repurchase agreements		—				—				—				193,389				—			193,389

	Total		$	5,875			$	—			$	5,875			$	206,142			$	—		$	206,142

	Information about the Company's financial instruments that are eligible for offset in the consolidated balance sheet as of September 30, 2014 is summarized below (in thousands):



			Financial Assets												Financial Liabilities
			Gross Amount Recognized				Gross Amount Offset				Net Amount Recognized				Gross Amount Recognized				Gross Amount Offset			Net Amount Recognized
Derivatives:
Interest rate swaps, caps and floors		$	6,539			$	—			$	6,539			$	27,562			$	—		$	27,562

Foreign currency forward contracts		840				—				840				379				—			379

Mortgage related derivatives		734				—				734				2,709				—			2,709

Total derivatives		8,113				—				8,113				30,650				—			30,650

Repurchase agreements		—				—				—				248,150				—			248,150

Total		$	8,113			$	—			$	8,113			$	278,800			$	—		$	278,800

Operating_Segments_Tables

Operating Segments (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of segment reporting information, by segment	'
	The following tables present summary financial information for the reportable segments (in thousands):



		Banking				Leasing				Mortgage Banking				Consolidated
	Three months ended September 30, 2014
	Net interest income	$	88,863			$	3,216			$	3,533			$	95,612

	Provision for credit losses	3,172				(58		)		(5		)		3,109

	Non-interest income	27,965				16,299				16,823				61,087

	Non-interest expense (1)	117,325				9,721				15,155				142,201

	Income tax expense	(1,287		)		3,693				2,082				4,488

	Net income	$	(2,382	)		$	6,159			$	3,124			$	6,901

	Total assets	$	13,212,350			$	490,690			$	803,003			$	14,506,043

	Three months ended September 30, 2013
	Net interest income	$	67,433			$	1,475			$	—			$	68,908

	Provision for credit losses	(3,348		)		44				—				(3,304		)

	Non-interest income	23,484				14,046				177				37,707

	Non-interest expense	67,873				8,392				—				76,265

	Income tax expense	6,402				2,781				71				9,254

	Net income	$	19,990			$	4,304			$	106			$	24,400

	Total assets	$	8,873,765			$	383,853			$	—			$	9,257,618





		Banking				Leasing				Mortgage Banking				Consolidated
	Nine months ended September 30, 2014
	Net interest income	$	219,248			$	8,231			$	3,533			$	231,012

	Provision for credit losses	2,488				(174		)		(5		)		2,309

	Non-interest income	77,842				42,716				17,069				137,627

	Non-interest expense (1)	252,952				28,171				15,155				296,278

	Income tax expense	9,345				8,649				2,082				20,076

	Net income	$	32,305			$	14,301			$	3,370			$	49,976

	Total assets	$	13,212,350			$	490,690			$	803,003			$	14,506,043

	Nine months ended September 30, 2013
	Net interest income	$	200,571			$	3,502			$	—			$	204,073

	Provision for credit losses	(2,930		)		126				—				(2,804		)

	Non-interest income	69,698				44,329				1,322				115,349

	Non-interest expense	193,182				24,765				—				217,947

Income tax expense	20,411				8,740				529				29,680

Net income	$	59,606			$	14,200			$	793			$	74,599

Total assets	$	8,873,765			$	383,853			$	—			$	9,257,618



(1)	Includes merger related expenses of $27.2 million and $28.3 million in the banking segment for the three and nine months ended September 30, 2014, respectively.

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Basic and diluted earnings per common share:	'	'	'	'
Net income (loss)	$6,901	$24,400	$49,976	$74,599
Less: preferred stock dividends and discount accretion	2,000	0	2,000	0
Net income available to common stockholders	4,901	24,400	47,976	74,599
Earnings allocated to common stockholders	4,901	24,399	47,975	74,597
Weighted average shares outstanding for basic earnings per common share	63,972,902	54,565,089	57,795,094	54,471,541
Weighted average shares outstanding for diluted earnings per common share	64,457,978	55,130,653	58,341,927	54,912,352
Basic earnings per common share	$0.08	$0.45	$0.83	$1.37
Diluted earnings per common share	$0.08	$0.44	$0.82	$1.36
Common Stock	'	'	'	'
Basic and diluted earnings per common share:	'	'	'	'
Distributed earnings allocated to common stock	10,545	6,636	23,877	17,653
Undistributed (loss) earnings	-3,644	17,764	26,099	56,946
Net income (loss)	6,901	24,400	49,976	74,599
Dilutive effect of equity awards	485,076	565,564	546,833	440,811
Participating Securities	'	'	'	'
Basic and diluted earnings per common share:	'	'	'	'
Less: earnings allocated to participating securities	$0	$1	$1	$2

Business_Combinations_Details

Business Combinations (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Aug. 18, 2014	Aug. 18, 2014	Aug. 18, 2014	Aug. 18, 2014	Aug. 15, 2014	Aug. 18, 2014
			Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.
					Restricted stock	Common Stock	Common Stock	Common Stock
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'
Number of securities called by each right (in shares)	'	'	'	'	'	'	'	0.64318
Amount called by each right	'	'	'	$4.08	'	'	'	'
Number of shares issued	'	'	'	'	'	19,602,482	19,602,482	'
Cash paid, net	'	'	120,510,000	'	3,700,000	'	'	'
Cash paid, net, stock options and warrants	'	'	4,400,000	'	'	'	'	'
Goodwill	$698,946,000	$423,369,000	'	$275,577,000	'	'	'	'

Business_Combinations_Details_

Business Combinations (Details 2) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Aug. 18, 2014	Aug. 18, 2014	Aug. 18, 2014	Aug. 15, 2014	Aug. 15, 2014	Aug. 18, 2014	Aug. 15, 2014
In Thousands, except Share data, unless otherwise specified			Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.
					Common Stock	Common Stock	Common Stock	Series A Preferred Stock [Member]	Series A Preferred Stock [Member]
ASSETS	'	'	'	'	'	'	'	'	'
Cash and cash equivalents	'	'	'	$154,684	'	'	'	'	'
Investment securities available for sale	'	'	'	826,691	'	'	'	'	'
Investment securities held to maturity	'	'	'	22,599	'	'	'	'	'
Non-marketable securities - FRB and FHLB Stock	'	'	'	50,620	'	'	'	'	'
Loans held for sale	'	'	'	670,671	'	'	'	'	'
Loans	'	'	'	3,539,304	'	'	'	'	'
Leases investments, net	'	'	'	11,885	'	'	'	'	'
Premises and equipment	'	'	'	20,201	'	'	'	'	'
Goodwill	698,946	423,369	'	275,577	'	'	'	'	'
Core deposit intangible	'	'	'	25,000	'	'	'	'	'
Mortgage servicing rights	'	'	'	232,439	'	'	'	'	'
Other real estate owned	'	'	'	5,082	'	'	'	'	'
Other assets	'	'	'	113,266	'	'	'	'	'
Total assets	'	'	'	5,948,019	'	'	'	'	'
LIABILITIES	'	'	'	'	'	'	'	'	'
Deposits	'	'	'	3,953,213	'	'	'	'	'
Short-term borrowings	'	'	'	1,035,800	'	'	'	'	'
Junior subordinated notes issued to capital trusts	'	'	'	80,843	'	'	'	'	'
Accrued expenses and other liabilities	'	'	'	123,103	'	'	'	'	'
Total liabilities	'	'	'	5,192,959	'	'	'	'	'
Series A preferred stock at $28.82 per share at August 15, 2014	115,280	0	'	'	'	'	'	115,280	'
Total identifiable net assets less Series A preferred stock	'	'	'	639,780	'	'	'	'	'
Consideration excluding Series A preferred stock:	'	'	'	'	'	'	'	'	'
Market value of common stock at $26.49 per share at August 15, 2014 (19,602,482 shares of common stock issued)	'	'	519,270	'	'	'	'	'	'
Cash paid, net	'	'	120,510	'	'	'	'	'	'
Total fair value of consideration, excluding Series A preferred stock	'	'	$639,780	'	'	'	'	'	'
Preferred stock, par or stated value per share (in dollars per share)	$0.01	$0.01	'	'	'	'	'	'	$28.82
Share price (in dollars per share)	'	'	'	'	'	'	$26.49	'	'
Number of shares issued	'	'	'	'	19,602,482	19,602,482	'	'	'

Business_Combinations_Details_1

Business Combinations (Details 3) (Taylor Capital Group, Inc., USD $)	Aug. 18, 2014
In Thousands, unless otherwise specified	Aug. 18, 2014
Business Combination, Acquired Receivables [Abstract]	'
Fair value of acquired loans	$3,539,304
Purchased Credit Impaired Loans Receivable	'
Business Combination, Acquired Receivables [Abstract]	'
Contractually required principal and interest payments	217,415
Nonaccretable difference	-30,042
Cash flows expected to be collected	187,373
Accretable difference	-3,252
Fair value of acquired loans	184,121
Purchased Non-Credit Impaired Loans Receivable	'
Business Combination, Acquired Receivables [Abstract]	'
Fair value of acquired loans	3,355,183
Contractually required principal and interest payments	3,696,399
Contractually required interest payments not expected to be collected due to estimated prepayments	264,030
Cash flows expected to be collected	3,432,369
Accretable difference	($77,186)

Business_Combinations_Details_2

Business Combinations (Details 4) (Taylor Capital Group, Inc., USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Taylor Capital Group, Inc.	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Pretax merger related costs	$27,200,000	'	$28,300,000	'
Professional and legal fees	6,400,000	'	6,900,000	'
Total revenues (net interest income plus non-interest income)	193,507,000	193,363,000	571,289,000	590,254,000
Net income	$7,689,000	$43,279,000	$75,697,000	$135,771,000

Investment_Securities_Details

Investment Securities (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
Investment Securities (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Available for Sale	'	'	'
Amortized Cost	$1,732,529,000	$1,732,529,000	$1,111,922,000
Gross Unrealized Gains	'	31,818,000	13,928,000
Gross Unrealized Losses	'	-5,697,000	-6,938,000
Fair Value	1,758,650,000	1,758,650,000	1,118,912,000
Held to Maturity	'	'	'
Investment securities held to maturity	1,005,349,000	1,005,349,000	1,182,533,000
Gross Unrealized Gains	'	40,519,000	20,762,000
Gross Unrealized Losses	'	-351,000	-4,366,000
Investment Securities held to maturity	1,045,517,000	1,045,517,000	1,198,929,000
Total Available for Sale and Held to Maturity Investment Securities	'	'	'
Amortized Cost	2,737,878,000	2,737,878,000	2,294,455,000
Gross Unrealized Gains	'	72,337,000	34,690,000
Gross Unrealized Losses	'	-6,048,000	-11,304,000
Fair Value	2,804,167,000	2,804,167,000	2,317,841,000
U.S. Government sponsored agencies and enterprises	'	'	'
Available for Sale	'	'	'
Amortized Cost	64,809,000	64,809,000	50,486,000
Gross Unrealized Gains	'	1,299,000	1,704,000
Gross Unrealized Losses	'	-279,000	-122,000
Fair Value	65,829,000	65,829,000	52,068,000
States and political subdivisions	'	'	'
Available for Sale	'	'	'
Amortized Cost	391,900,000	391,900,000	19,398,000
Gross Unrealized Gains	'	17,330,000	22,000
Gross Unrealized Losses	'	-197,000	-277,000
Fair Value	409,033,000	409,033,000	19,143,000
Held to Maturity	'	'	'
Investment securities held to maturity	760,674,000	760,674,000	932,955,000
Gross Unrealized Gains	'	27,774,000	7,584,000
Gross Unrealized Losses	'	-351,000	-4,366,000
Investment Securities held to maturity	788,097,000	788,097,000	936,173,000
Total Available for Sale and Held to Maturity Investment Securities	'	'	'
Percentage of securities consisting general obligation issues	'	92.00%	'
Held-to-maturity securities, transferred to available-for-sale securities, at fair value	291,200,000	291,200,000	'
Held-to-maturity securities, transferred to available-for-sale securities, unrealized gain (loss)	3,200,000	'	'
States and political subdivisions \| State of Illinois	'	'	'
Total Available for Sale and Held to Maturity Investment Securities	'	'	'
Percentage of investments issued by states and political subdivisions that were within the state of Illinois	'	27.00%	'
Residential mortgage-backed securities	'	'	'
Available for Sale	'	'	'
Amortized Cost	795,554,000	795,554,000	696,415,000
Gross Unrealized Gains	'	8,528,000	8,555,000
Gross Unrealized Losses	'	-2,142,000	-3,737,000
Fair Value	801,940,000	801,940,000	701,233,000
Held to Maturity	'	'	'
Investment securities held to maturity	244,675,000	244,675,000	249,578,000
Gross Unrealized Gains	'	12,745,000	13,178,000
Gross Unrealized Losses	'	0	0
Investment Securities held to maturity	257,420,000	257,420,000	262,756,000
Commercial mortgage-backed securities	'	'	'
Available for Sale	'	'	'
Amortized Cost	204,076,000	204,076,000	50,891,000
Gross Unrealized Gains	'	1,457,000	2,050,000
Gross Unrealized Losses	'	-1,371,000	0
Fair Value	204,162,000	204,162,000	52,941,000
Corporate bonds	'	'	'
Available for Sale	'	'	'
Amortized Cost	265,720,000	265,720,000	284,083,000
Gross Unrealized Gains	'	3,204,000	1,597,000
Gross Unrealized Losses	'	-1,685,000	-2,610,000
Fair Value	267,239,000	267,239,000	283,070,000
Equity securities	'	'	'
Available for Sale	'	'	'
Amortized Cost	10,470,000	10,470,000	10,649,000
Gross Unrealized Gains	'	0	0
Gross Unrealized Losses	'	-23,000	-192,000
Fair Value	10,447,000	10,447,000	10,457,000
Certain longer-term and lower-coupon investment securities	'	'	'
Available for Sale	'	'	'
Fair Value	$451,600,000	$451,600,000	'

Investment_Securities_Details_

Investment Securities (Details 2) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
	Security_Position	Security_Position
Available for Sale	'	'
Less Than 12 Months, Fair Value	$587,221	$386,481
Less Than 12 Months, Unrealized Losses	-3,823	-5,991
12 Months or More, Fair Value	38,366	49,635
12 Months or More, Unrealized Losses	-1,874	-947
Total Fair Value	625,587	436,116
Total Unrealized Losses	-5,697	-6,938
Total	'	'
Less Than 12 Months, Fair Value	609,839	621,497
Less Than 12 Months, Unrealized Losses	-3,852	-10,321
12 Months or More, Fair Value	53,122	50,936
12 Months or More, Unrealized Losses	-2,196	-983
Total Fair Value	662,961	672,433
Total Unrealized Losses	-6,048	-11,304
Number of security positions in the investment portfolio in an unrealized loss position	236	345
U.S. Government sponsored agencies and enterprises	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	14,631	18,598
Less Than 12 Months, Unrealized Losses	-279	-122
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total Fair Value	14,631	18,598
Total Unrealized Losses	-279	-122
States and political subdivisions	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	45,023	2,275
Less Than 12 Months, Unrealized Losses	-128	-166
12 Months or More, Fair Value	3,556	4,748
12 Months or More, Unrealized Losses	-69	-111
Total Fair Value	48,579	7,023
Total Unrealized Losses	-197	-277
Held to maturity	'	'
Less Than 12 Months, Fair Value	22,618	235,016
Less Than 12 Months, Unrealized Losses	-29	-4,330
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	14,756	1,301
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	-322	-36
Total Fair Value	37,374	236,317
Total Unrealized Losses	-351	-4,366
Residential mortgage-backed securities	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	325,538	232,807
Less Than 12 Months, Unrealized Losses	-1,815	-2,905
12 Months or More, Fair Value	24,935	44,182
12 Months or More, Unrealized Losses	-327	-832
Total Fair Value	350,473	276,989
Total Unrealized Losses	-2,142	-3,737
Commercial mortgage-backed securities	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	154,928	'
Less Than 12 Months, Unrealized Losses	-1,371	'
12 Months or More, Fair Value	0	'
12 Months or More, Unrealized Losses	0	'
Total Fair Value	154,928	'
Total Unrealized Losses	-1,371	'
Corporate bonds	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	36,654	122,344
Less Than 12 Months, Unrealized Losses	-207	-2,606
12 Months or More, Fair Value	9,875	705
12 Months or More, Unrealized Losses	-1,478	-4
Total Fair Value	46,529	123,049
Total Unrealized Losses	-1,685	-2,610
Equity securities	'	'
Available for Sale	'	'
Less Than 12 Months, Fair Value	10,447	10,457
Less Than 12 Months, Unrealized Losses	-23	-192
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total Fair Value	10,447	10,457
Total Unrealized Losses	($23)	($192)

Investment_Securities_Details_1

Investment Securities (Details 3) (USD $)	3 Months Ended		9 Months Ended
Investment Securities (Details 3) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Amortized cost and fair value of investment securities by contractual maturity	'	'	'	'	'
Realized gains	$921,000	$1,000	$1,246,000	$15,000	'
Realized losses	-4,167,000	0	-4,170,000	-1,000	'
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	0	0	-92,000	0	'
Net (losses) gains	-3,246,000	1,000	-3,016,000	14,000	'
Amortized Cost, Available for sale	'	'	'	'	'
Due in one year or less	5,586,000	'	5,586,000	'	'
Due after one year through five years	319,903,000	'	319,903,000	'	'
Due after five years through ten years	38,026,000	'	38,026,000	'	'
Due after ten years	358,914,000	'	358,914,000	'	'
Amortized Cost	1,732,529,000	'	1,732,529,000	'	1,111,922,000
Fair Value, Available for sale	'	'	'	'	'
Due in one year or less	5,622,000	'	5,622,000	'	'
Due after one year through five years	322,775,000	'	322,775,000	'	'
Due after five years through ten years	38,347,000	'	38,347,000	'	'
Due after ten years	375,357,000	'	375,357,000	'	'
Fair Value	1,758,650,000	'	1,758,650,000	'	1,118,912,000
Amortized Cost, Held to maturity	'	'	'	'	'
Due in one year or less	25,437,000	'	25,437,000	'	'
Due in after one year through five years	252,723,000	'	252,723,000	'	'
Due after five years through ten years	106,997,000	'	106,997,000	'	'
Due after ten years	375,517,000	'	375,517,000	'	'
Investment securities held to maturity	1,005,349,000	'	1,005,349,000	'	1,182,533,000
Fair value, Held to maturity	'	'	'	'	'
Due in one year or less	25,476,000	'	25,476,000	'	'
Due in after one year through five years	255,282,000	'	255,282,000	'	'
Due after five years through ten years	110,693,000	'	110,693,000	'	'
Due after ten years	396,646,000	'	396,646,000	'	'
Investment Securities held to maturity	1,045,517,000	'	1,045,517,000	'	1,198,929,000
Total Available for Sale and Held to Maturity Investment Securities	'	'	'	'	'
Amortized Cost	2,737,878,000	'	2,737,878,000	'	2,294,455,000
Fair Value	2,804,167,000	'	2,804,167,000	'	2,317,841,000
Pledged financial instruments, not separately reported, securities	1,600,000,000	'	1,600,000,000	'	1,200,000,000
Pledged financial instruments, not separately reported, securities required to be pledged	1,100,000,000	'	1,100,000,000	'	908,400,000
Investment securities pledged as collateral for long-term Federal Home Loan Bank advances	257,100,000	'	257,100,000	'	29,000,000
Equity securities	'	'	'	'	'
Amortized Cost, Available for sale	'	'	'	'	'
Amortized Cost	10,470,000	'	10,470,000	'	10,649,000
Fair Value, Available for sale	'	'	'	'	'
Fair Value	10,447,000	'	10,447,000	'	10,457,000
Residential and commercial mortgage-backed securities	'	'	'	'	'
Amortized Cost, Available for sale	'	'	'	'	'
Amortized Cost	999,630,000	'	999,630,000	'	'
Fair Value, Available for sale	'	'	'	'	'
Fair Value	1,006,102,000	'	1,006,102,000	'	'
Residential mortgage-backed securities	'	'	'	'	'
Amortized Cost, Available for sale	'	'	'	'	'
Amortized Cost	795,554,000	'	795,554,000	'	696,415,000
Fair Value, Available for sale	'	'	'	'	'
Fair Value	801,940,000	'	801,940,000	'	701,233,000
Amortized Cost, Held to maturity	'	'	'	'	'
Investment securities held to maturity	244,675,000	'	244,675,000	'	249,578,000
Fair value, Held to maturity	'	'	'	'	'
Investment Securities held to maturity	$257,420,000	'	$257,420,000	'	$262,756,000

Loans_Details

Loans (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
	investmentrating	Dec. 31, 2013	Sep. 30, 2013
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	$8,710,060,000	$5,476,831,000	'
Purchased credit impaired including covered loans	272,957,000	235,720,000	'
Total loans	8,983,017,000	5,712,551,000	5,586,732,000
Number of highest rating categories by rating services company	1	'	'
Number of highest rating categories to be achieved for classification as investment grade companies	4	'	'
Loans pledged as collateral for long-term Federal Home Loan Bank advances	1,700,000,000	835,100,000	'
Loans required to be pledged as collateral for long-term Federal Home Loan Bank advances	760,500,000	518,400,000	'
Commercial loans	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	3,078,590,000	1,281,377,000	'
Total loans	3,190,656,000	'	1,189,861,000
Commercial loans collateralized by assignment of lease payments	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	1,631,660,000	1,494,188,000	'
Total loans	1,631,660,000	'	1,468,814,000
Commercial real estate	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	2,646,895,000	1,647,700,000	'
Total loans	2,757,252,000	'	1,798,167,000
Residential real estate	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	516,873,000	314,440,000	'
Total loans	520,235,000	'	313,532,000
Construction real estate	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	230,999,000	141,253,000	'
Total loans	255,273,000	'	197,592,000
Indirect vehicle	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	273,038,000	262,632,000	'
Total loans	273,038,000	'	257,740,000
Home equity lines	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	262,977,000	268,289,000	'
Total loans	263,092,000	'	274,594,000
Other consumer	'	'	'
Loans	'	'	'
Total loans, excluding purchased credit impaired and covered loans	69,028,000	66,952,000	'
Total loans	$91,811,000	'	$86,432,000
Minimum	'	'	'
Loans	'	'	'
Percentage of collateral pledge of first mortgage loans as per agreement	133.00%	'	'
Percentage of collateral pledge of home equity loans as per agreement	250.00%	'	'

Loans_Details_2

Loans (Details 2) (USD $)	9 Months Ended
Loans (Details 2) (USD $)	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	$8,710,060,000		$5,476,831,000		'
Total loans	8,983,017,000		5,712,551,000		5,586,732,000
Period past due of recorded investment in loans (in days)	'90 days		'		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Non-performing substandard and doubtful loans	63,500,000		80,700,000		'
Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	7,297,922,000		4,335,981,000		'
Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	175,056,000		68,277,000		'
Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	115,166,000		156,570,000		'
Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		3,690,000		'
Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	7,588,144,000		4,564,518,000		'
Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	55,649,000		56,339,000		'
30-59 days, past due	5,716,000		14,325,000		'
60-89 days, past due	1,354,000		3,283,000		'
Loans past due, 90 days or more	37,542,000		32,614,000		'
Total, past due	44,612,000		50,222,000		'
Total loans	100,261,000		106,561,000		'
Commercial loans	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	3,071,130,000		1,273,302,000		'
30-59 days, past due	5,804,000		5,952,000		'
60-89 days, past due	653,000		626,000		'
Loans past due, 90 days or more	1,003,000		1,497,000		'
Total, past due	7,460,000		8,075,000		'
Total loans, excluding covered loans	3,078,590,000		1,281,377,000		'
Total loans	3,190,656,000		'		1,189,861,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	18,711,000		17,781,000		'
Loans past due 90 days or more and still accruing	134,000		0		'
Commercial loans \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	2,887,706,000		1,193,114,000		'
Commercial loans \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	148,275,000		26,637,000		'
Commercial loans \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	42,609,000		61,000,000		'
Commercial loans \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		626,000		'
Commercial loans \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	3,078,590,000		1,281,377,000		'
Commercial loans collateralized by assignment of lease payments	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	1,621,904,000		1,489,391,000		'
30-59 days, past due	2,102,000		3,841,000		'
60-89 days, past due	5,506,000		656,000		'
Loans past due, 90 days or more	2,148,000		300,000		'
Total, past due	9,756,000		4,797,000		'
Total loans, excluding covered loans	1,631,660,000		1,494,188,000		'
Total loans	1,631,660,000		'		1,468,814,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	2,402,000		4,276,000		'
Loans past due 90 days or more and still accruing	1,738,000		291,000		'
Commercial loans collateralized by assignment of lease payments \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,626,794,000		1,486,899,000		'
Commercial loans collateralized by assignment of lease payments \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	51,000		553,000		'
Commercial loans collateralized by assignment of lease payments \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	4,815,000		6,736,000		'
Commercial loans collateralized by assignment of lease payments \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Commercial loans collateralized by assignment of lease payments \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,631,660,000		1,494,188,000		'
Commercial real estate	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	2,646,895,000		1,647,700,000		'
Total loans	2,757,252,000		'		1,798,167,000
Healthcare	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	347,189,000		213,665,000		'
30-59 days, past due	0		0		'
60-89 days, past due	0		0		'
Loans past due, 90 days or more	0		3,064,000		'
Total, past due	0		3,064,000		'
Total loans, excluding covered loans	347,189,000		216,729,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	0		3,064,000		'
Loans past due 90 days or more and still accruing	0		0		'
Healthcare \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	347,189,000		189,705,000		'
Healthcare \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		21,186,000		'
Healthcare \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		2,774,000		'
Healthcare \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		3,064,000		'
Healthcare \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	347,189,000		216,729,000		'
Industrial	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	345,865,000		372,975,000		'
30-59 days, past due	123,000		5,465,000		'
60-89 days, past due	0		0		'
Loans past due, 90 days or more	8,018,000		1,404,000		'
Total, past due	8,141,000		6,869,000		'
Total loans, excluding covered loans	354,006,000		379,844,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	11,029,000		15,265,000		'
Loans past due 90 days or more and still accruing	240,000		155,000		'
Industrial \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	326,390,000		345,236,000		'
Industrial \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	6,970,000		5,328,000		'
Industrial \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	20,646,000		29,280,000		'
Industrial \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Industrial \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	354,006,000		379,844,000		'
Multifamily	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	416,171,000		302,456,000		'
30-59 days, past due	386,000		3,078,000		'
60-89 days, past due	298,000		181,000		'
Loans past due, 90 days or more	1,192,000		2,226,000		'
Total, past due	1,876,000		5,485,000		'
Total loans, excluding covered loans	418,047,000		307,941,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	6,968,000		5,145,000		'
Loans past due 90 days or more and still accruing	0		0		'
Multifamily \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	409,901,000		296,179,000		'
Multifamily \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	390,000		342,000		'
Multifamily \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	7,756,000		11,420,000		'
Multifamily \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Multifamily \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	418,047,000		307,941,000		'
Retail	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	432,324,000		334,198,000		'
30-59 days, past due	2,762,000		328,000		'
60-89 days, past due	0		2,816,000		'
Loans past due, 90 days or more	3,484,000		7,258,000		'
Total, past due	6,246,000		10,402,000		'
Total loans, excluding covered loans	438,570,000		344,600,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	3,493,000		2,969,000		'
Loans past due 90 days or more and still accruing	0		0		'
Retail \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	423,436,000		316,420,000		'
Retail \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,608,000		10,660,000		'
Retail \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	13,526,000		17,520,000		'
Retail \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Retail \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	438,570,000		344,600,000		'
Office	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	274,508,000		155,936,000		'
30-59 days, past due	383,000		0		'
60-89 days, past due	0		0		'
Loans past due, 90 days or more	2,717,000		2,066,000		'
Total, past due	3,100,000		2,066,000		'
Total loans, excluding covered loans	277,608,000		158,002,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	5,433,000		11,703,000		'
Loans past due 90 days or more and still accruing	0		0		'
Office \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	266,644,000		151,393,000		'
Office \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	2,573,000		2,682,000		'
Office \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	8,391,000		3,927,000		'
Office \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Office \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	277,608,000		158,002,000		'
Other	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	806,688,000		233,464,000		'
30-59 days, past due	971,000		4,898,000		'
60-89 days, past due	324,000		259,000		'
Loans past due, 90 days or more	3,492,000		1,963,000		'
Total, past due	4,787,000		7,120,000		'
Total loans, excluding covered loans	811,475,000		240,584,000		'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	15,100,000		19,991,000		'
Loans past due 90 days or more and still accruing	569,000		0		'
Other \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	784,978,000		217,188,000		'
Other \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	9,411,000		349,000		'
Other \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	17,086,000		23,047,000		'
Other \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Other \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	811,475,000		240,584,000		'
Residential real estate	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	502,516,000		302,362,000		'
30-59 days, past due	4,119,000		1,422,000		'
60-89 days, past due	2,648,000		1,030,000		'
Loans past due, 90 days or more	7,590,000		9,626,000		'
Total, past due	14,357,000		12,078,000		'
Total loans, excluding covered loans	516,873,000		314,440,000		'
Total loans	520,235,000		'		313,532,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	16,815,000		13,009,000		'
Loans past due 90 days or more and still accruing	0		0		'
Residential real estate \| Performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	500,058,000		301,431,000		'
Residential real estate \| Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	16,815,000		13,009,000		'
Construction real estate	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	230,662,000		138,563,000		'
30-59 days, past due	0		391,000		'
60-89 days, past due	0		0		'
Loans past due, 90 days or more	337,000		2,299,000		'
Total, past due	337,000		2,690,000		'
Total loans, excluding covered loans	230,999,000		141,253,000		'
Total loans	255,273,000		'		197,592,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	337,000		475,000		'
Loans past due 90 days or more and still accruing	0		0		'
Construction real estate \| Pass	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	224,884,000		139,847,000		'
Construction real estate \| Special Mention	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	5,778,000		540,000		'
Construction real estate \| Substandard	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	337,000		866,000		'
Construction real estate \| Doubtful	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	0		0		'
Construction real estate \| Total risk rated category	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	230,999,000		141,253,000		'
Indirect vehicle	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	270,179,000		259,488,000		'
30-59 days, past due	1,673,000		2,210,000		'
60-89 days, past due	879,000		657,000		'
Loans past due, 90 days or more	307,000		277,000		'
Total, past due	2,859,000		3,144,000		'
Total loans, excluding covered loans	273,038,000		262,632,000		'
Total loans	273,038,000		'		257,740,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	1,652,000		1,459,000		'
Loans past due 90 days or more and still accruing	0		0		'
Indirect vehicle \| Performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	271,386,000		261,173,000		'
Indirect vehicle \| Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,652,000		1,459,000		'
Home equity lines	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	251,397,000		257,219,000		'
30-59 days, past due	2,158,000		1,725,000		'
60-89 days, past due	1,335,000		2,165,000		'
Loans past due, 90 days or more	8,087,000		7,180,000		'
Total, past due	11,580,000		11,070,000		'
Total loans, excluding covered loans	262,977,000		268,289,000		'
Total loans	263,092,000		'		274,594,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	15,635,000		10,969,000		'
Loans past due 90 days or more and still accruing	0		0		'
Home equity lines \| Performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	247,342,000		257,320,000		'
Home equity lines \| Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	15,635,000		10,969,000		'
Other consumer	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	69,009,000		66,866,000		'
30-59 days, past due	14,000		81,000		'
60-89 days, past due	2,000		1,000		'
Loans past due, 90 days or more	3,000		4,000		'
Total, past due	19,000		86,000		'
Total loans, excluding covered loans	69,028,000		66,952,000		'
Total loans	91,811,000		'		86,432,000
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	5,000		9,000		'
Loans past due 90 days or more and still accruing	0		0		'
Other consumer \| Performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	69,023,000		66,943,000		'
Other consumer \| Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	5,000		9,000		'
Other loans	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,121,916,000		912,313,000		'
Other loans \| Performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	1,087,809,000		886,867,000		'
Other loans \| Non-performing	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Total loans, excluding covered loans	34,107,000		25,446,000		'
Gross loans, excluding covered loans	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	8,639,542,000		5,399,885,000		'
30-59 days, past due	20,495,000		29,391,000		'
60-89 days, past due	11,645,000		8,391,000		'
Loans past due, 90 days or more	38,378,000		39,164,000		'
Total, past due	70,518,000		76,946,000		'
Total loans, excluding covered loans	8,710,060,000		5,476,831,000		'
Purchased credit-impaired including covered loans	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	166,364,000		135,717,000		'
30-59 days, past due	3,909,000		902,000		'
60-89 days, past due	2,464,000		3,346,000		'
Loans past due, 90 days or more	100,220,000		95,755,000		'
Total, past due	106,593,000		100,003,000		'
Total loans	272,957,000		235,720,000		'
Loans	'		'		'
Contractual aging of the recorded investment in loans	'		'		'
Current	8,805,906,000	[1]	5,535,602,000	[1]	'
30-59 days, past due	24,404,000	[1]	30,293,000	[1]	'
60-89 days, past due	14,109,000	[1]	11,737,000	[1]	'
Loans past due, 90 days or more	138,598,000	[1]	134,919,000	[1]	'
Total, past due	177,111,000	[1]	176,949,000	[1]	'
Total loans	8,983,017,000	[1]	5,712,551,000	[1]	'
Recorded investment in nonaccrual loans and loans past due ninety days or more and still accruing	'		'		'
Nonaccrual	97,580,000		106,115,000		'
Loans past due 90 days or more and still accruing	$2,681,000		$446,000		'

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Loans_Details_3

Loans (Details 3) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	$132,209	$132,209	$135,041
Recorded Investment	116,060	116,060	128,521
Partial Charge-Offs	16,149	16,149	6,520
Allowance for Loan Losses Allocated	10,715	10,715	17,368
Impaired Financing Receivable, Average Recorded Investment	121,814	132,292	136,454
Interest Income Recognized	118	343	1,870
Restructured loans	6,088	6,088	'
Commercial loans	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	263	263	'
Multifamily	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	158	158	'
Residential real estate	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	1,850	1,850	'
Indirect vehicle	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	267	267	'
Home equity lines	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	3,550	3,550	'
Impaired financing receivable with no allowance \| Commercial loans	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	14,719	14,719	8,903
Recorded Investment	14,130	14,130	8,903
Partial Charge-Offs	589	589	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	14,936	10,542	8,259
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Commercial loans collateralized by assignment of lease payments	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	1,857	1,857	3,401
Recorded Investment	1,857	1,857	3,401
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	2,026	2,542	1,030
Interest Income Recognized	31	81	6
Impaired financing receivable with no allowance \| Healthcare	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	2,698
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Industrial	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	11,505	11,505	7,560
Recorded Investment	8,388	8,388	7,560
Partial Charge-Offs	3,117	3,117	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	8,844	8,407	8,900
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Multifamily	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	2,409	2,409	1,166
Recorded Investment	2,409	2,409	1,166
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	2,492	1,963	758
Interest Income Recognized	7	45	11
Impaired financing receivable with no allowance \| Retail	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	3,950	3,950	4,466
Recorded Investment	2,730	2,730	4,466
Partial Charge-Offs	1,220	1,220	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	2,193	4,353	3,628
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Office	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	2,339	2,339	559
Recorded Investment	1,546	1,546	527
Partial Charge-Offs	793	793	32
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	1,580	1,507	922
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Other	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	14,190	14,190	2,963
Recorded Investment	14,149	14,149	2,963
Partial Charge-Offs	41	41	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	14,978	6,506	4,380
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Residential real estate	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	1,941	1,941	4,234
Recorded Investment	1,941	1,941	4,234
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	1,899	3,023	3,260
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Construction real estate	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	45	0
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Indirect vehicle	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Home equity lines	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	577	577	577
Recorded Investment	577	577	577
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	577	824	797
Interest Income Recognized	0	0	0
Impaired financing receivable with no allowance \| Other consumer	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Commercial loans	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	4,720	4,720	8,923
Recorded Investment	4,720	4,720	8,919
Partial Charge-Offs	0	0	4
Allowance for Loan Losses Allocated	2,250	2,250	4,284
Impaired Financing Receivable, Average Recorded Investment	5,353	16,266	13,476
Interest Income Recognized	0	0	4
Impaired financing receivable with allowance \| Commercial loans collateralized by assignment of lease payments	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	4,354	4,354	1,060
Recorded Investment	4,354	4,354	1,060
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	238	238	144
Impaired Financing Receivable, Average Recorded Investment	3,725	1,772	1,279
Interest Income Recognized	58	82	192
Impaired financing receivable with allowance \| Healthcare	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	3,186
Recorded Investment	0	0	3,064
Partial Charge-Offs	0	0	122
Allowance for Loan Losses Allocated	0	0	382
Impaired Financing Receivable, Average Recorded Investment	0	0	8,189
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Industrial	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	3,047	3,047	7,707
Recorded Investment	3,042	3,042	7,705
Partial Charge-Offs	5	5	2
Allowance for Loan Losses Allocated	333	333	3,038
Impaired Financing Receivable, Average Recorded Investment	3,140	6,482	3,699
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Multifamily	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	6,644	6,644	5,374
Recorded Investment	5,673	5,673	5,374
Partial Charge-Offs	971	971	0
Allowance for Loan Losses Allocated	1,311	1,311	1,661
Impaired Financing Receivable, Average Recorded Investment	6,335	6,467	6,443
Interest Income Recognized	18	123	340
Impaired financing receivable with allowance \| Retail	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	10,181	10,181	14,169
Recorded Investment	7,797	7,797	12,428
Partial Charge-Offs	2,384	2,384	1,741
Allowance for Loan Losses Allocated	690	690	1,511
Impaired Financing Receivable, Average Recorded Investment	8,637	8,232	12,885
Interest Income Recognized	0	0	280
Impaired financing receivable with allowance \| Office	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	2,298	2,298	2,442
Recorded Investment	1,946	1,946	2,442
Partial Charge-Offs	352	352	0
Allowance for Loan Losses Allocated	576	576	791
Impaired Financing Receivable, Average Recorded Investment	2,186	2,532	4,045
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Other	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	1,482	1,482	20,367
Recorded Investment	1,397	1,397	17,029
Partial Charge-Offs	85	85	3,338
Allowance for Loan Losses Allocated	243	243	796
Impaired Financing Receivable, Average Recorded Investment	1,674	10,135	12,868
Interest Income Recognized	4	12	20
Impaired financing receivable with allowance \| Residential real estate	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	16,361	16,361	13,496
Recorded Investment	13,870	13,870	12,710
Partial Charge-Offs	2,491	2,491	786
Allowance for Loan Losses Allocated	3,196	3,196	3,119
Impaired Financing Receivable, Average Recorded Investment	14,646	14,549	12,966
Interest Income Recognized	0	0	245
Impaired financing receivable with allowance \| Construction real estate	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	2,707	2,707	475
Recorded Investment	337	337	475
Partial Charge-Offs	2,370	2,370	0
Allowance for Loan Losses Allocated	161	161	227
Impaired Financing Receivable, Average Recorded Investment	431	463	1,603
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Indirect vehicle	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	336	336	173
Recorded Investment	212	212	123
Partial Charge-Offs	124	124	50
Allowance for Loan Losses Allocated	27	27	57
Impaired Financing Receivable, Average Recorded Investment	391	336	86
Interest Income Recognized	0	0	0
Impaired financing receivable with allowance \| Home equity lines	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	26,592	26,592	23,840
Recorded Investment	24,985	24,985	23,395
Partial Charge-Offs	1,607	1,607	445
Allowance for Loan Losses Allocated	1,690	1,690	1,358
Impaired Financing Receivable, Average Recorded Investment	25,771	25,346	24,283
Interest Income Recognized	0	0	772
Impaired financing receivable with allowance \| Other consumer	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Unpaid Principal Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-Offs	0	0	0
Allowance for Loan Losses Allocated	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Performing	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	16,900	16,900	29,400
Non-performing	'	'	'
Loans individually evaluated for impairment by class of loans	'	'	'
Restructured loans	$22,400	$22,400	$25,000

Loans_Details_4

Loans (Details 4) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

note

loan

Performing

Non-performing

Commercial loans

Healthcare

Industrial

Multifamily

Retail

Other

Residential real estate

Indirect vehicle

Home equity lines

loan

Non-performing

Performing

Non-performing

Performing

Non-performing

Performing

Non-performing

Performing

Non-performing

loan

Restructured loans

Number of separate notes restructured into A/B by the company

Minimum period of sustained repayment required to return the note to accrual status (in months)

'6 months

Restructured loans representing A/B structures

$1,100,000

Number of A/B structures represented by restructured loans

Number of loans

Pre-Modification Recorded Investment

114,000

1,888,000

2,178,000

1,110,000

4,709,000

4,200,000

13,163,000

263,000

1,251,000

3,164,000

2,570,000

601,000

436,000

158,000

623,000

205,000

862,000

84,000

95,000

854,000

411,000

394,000

1,850,000

1,149,000

5,000

95,000

113,000

262,000

127,000

19,000

1,883,000

723,000

604,000

397,000

1,667,000

3,333,000

Post-Modification Recorded Investment

114,000

1,888,000

2,178,000

1,110,000

4,685,000

4,200,000

13,139,000

263,000

1,251,000

3,164,000

2,570,000

601,000

436,000

158,000

623,000

205,000

862,000

84,000

95,000

854,000

411,000

394,000

1,850,000

1,149,000

5,000

95,000

89,000

262,000

103,000

19,000

1,883,000

723,000

604,000

397,000

1,667,000

3,333,000

Charge-offs and Specific Reserves

388,000

695,000

540,000

3,045,000

85,000

673,000

496,000

1,425,000

119,000

40,000

169,000

56,000

235,000

23,000

246,000

38,000

24,000

65,000

24,000

104,000

Redefaulted loans

Period past due of recorded redefaulted loans (in days)

'90 days

Troubled Debt Restructuring Activity [Roll Forward]

Beginning balance

29,430,000

24,952,000

263,000

158,000

1,850,000

267,000

3,550,000

Additions

1,888,000

4,200,000

Charge-offs

-368,000

-2,147,000

Principal payments, net

-2,436,000

-3,829,000

Removals

-8,573,000

-3,572,000

Transfer to other real estate owned

-221,000

Transfer from/to performing

6,292,000

9,356,000

Transfer from/to non-performing

-9,356,000

-6,292,000

Ending balance

$6,088,000

$16,877,000

$22,447,000

$263,000

$158,000

$1,850,000

$267,000

$3,550,000

Loans_Details_5

Loans (Details 5) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified	Sep. 30, 2014
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	$2,204
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	2,900
Delay in Payments or Reduction of Interest Rate	984
Total	6,088
Commercial loans	'
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	0
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	263
Delay in Payments or Reduction of Interest Rate	0
Total	263
Multifamily	'
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	0
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	158
Delay in Payments or Reduction of Interest Rate	0
Total	158
Residential real estate	'
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	411
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	1,269
Delay in Payments or Reduction of Interest Rate	170
Total	1,850
Indirect vehicle	'
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	0
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	0
Delay in Payments or Reduction of Interest Rate	267
Total	267
Home equity lines	'
Activity in the allowance for loan losses, balance in allowance for loan losses and recorded investment in loans by portfolio segment and based on impairment method	'
Extended Maturity and Amortization and Reduction of Interest Rate	1,793
Extended Maturity And Delay in Payments or Reduction Of Interest Rate	1,210
Delay in Payments or Reduction of Interest Rate	547
Total	$3,550

Loans_Details_6

Loans (Details 6) (USD $)	3 Months Ended				9 Months Ended
Loans (Details 6) (USD $)	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	'		'		$111,746,000		'		'
Transfer to and from allowance for unfunded credit commitments	'		0		'		-500,000		'
Ending Balance	102,810,000		'		102,810,000		'		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Acquired and accounted for under ASC 310-30	1,246,000	[1]	2,857,000	[1]	1,246,000	[1]	2,857,000	[1]	'
Unfunded Commitments	'		'		'		'		'
Allowance for unfunded credit commitments, beginning balance	2,995,000		1,812,000		1,716,000		4,075,000		'
Allowance for Unfunded Commitments, Provision Acquired Through Business Combination	1,261,000		'		1,261,000		'		'
Allowance For Unfunded Commitments, Utilization	-637,000		'		-637,000		'		'
Allowance for unfunded commitments, Provision	483,000		-118,000		1,762,000		-1,881,000		'
Individually evaluated for impairment for unfunded commitments	1,316,000		657,000		1,316,000		657,000		'
Unfunded commitments collectively evaluated for impairment	2,786,000		1,037,000		2,786,000		1,037,000		'
Allowance for unfunded credit commitments, ending balance	4,102,000		1,694,000		4,102,000		1,694,000		'
Allowance for credit losses	'		'		'		'		'
Allowance for credit losses, beginning balance	103,905,000		125,497,000		113,462,000		128,279,000		'
Allowance for unfunded credit commitments acquired through business combination	1,261,000		'		1,261,000		'		'
Utilization of allowance for unfunded credit commitments	-637,000		'		-637,000		'		'
Allowance for loan losses and unfunded commitments charge offs	4,484,000		5,155,000		18,735,000		17,068,000		'
Allowance for loan losses and unfunded commitments recoveries	3,758,000		2,687,000		9,252,000		11,318,000		'
Allowance for loan losses and unfunded commitments provision	3,109,000		-3,304,000		2,309,000		-2,804,000		'
Allowance for credit losses, individually evaluated for impairment	12,031,000		16,849,000		12,031,000		16,849,000		'
Allowance for credit losses, collectively evaluated for impairment	93,635,000		100,019,000		93,635,000		100,019,000		'
Acquired and accounted for under ASC 310-30	1,246,000	[1]	2,857,000	[1]	1,246,000	[1]	2,857,000	[1]	'
Allowance for credit losses, ending balance	106,912,000		119,725,000		106,912,000		119,725,000		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	116,060,000		123,623,000		116,060,000		123,623,000		'
Collectively evaluated for impairment	8,594,000,000		5,171,109,000		8,594,000,000		5,171,109,000		'
Acquired and accounted for under ASC 310-30	272,957,000	[1]	292,000,000	[1]	272,957,000	[1]	292,000,000	[1]	'
Total loans	8,983,017,000		5,586,732,000		8,983,017,000		5,586,732,000		5,712,551,000
Commercial loans	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	23,154,000		27,277,000		23,461,000		24,943,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	606,000		1,686,000		1,142,000		3,030,000		'
Recoveries	564,000		579,000		2,888,000		1,808,000		'
Provision	2,181,000		-45,000		86,000		2,404,000		'
Ending Balance	25,293,000		26,125,000		25,293,000		26,125,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	2,250,000		4,389,000		2,250,000		4,389,000		'
Collectively evaluated for impairment	22,433,000		20,871,000		22,433,000		20,871,000		'
Acquired and accounted for under ASC 310-30	610,000	[1]	865,000		610,000	[1]	865,000		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	610,000	[1]	865,000		610,000	[1]	865,000		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	18,850,000		19,836,000		18,850,000		19,836,000		'
Collectively evaluated for impairment	3,059,740,000		1,134,376,000		3,059,740,000		1,134,376,000		'
Acquired and accounted for under ASC 310-30	112,066,000	[1]	35,649,000	[1]	112,066,000	[1]	35,649,000	[1]	'
Total loans	3,190,656,000		1,189,861,000		3,190,656,000		1,189,861,000		'
Commercial loans collateralized by assignment of lease payments	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	9,425,000		8,529,000		9,159,000		7,755,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	0		'		40,000		'		'
Recoveries	425,000		'		555,000		1,131,000		'
Provision	-484,000		721,000		-308,000		364,000		'
Ending Balance	9,366,000		9,250,000		9,366,000		9,250,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	238,000		285,000		238,000		285,000		'
Collectively evaluated for impairment	9,128,000		8,965,000		9,128,000		8,965,000		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	6,211,000		2,330,000		6,211,000		2,330,000		'
Collectively evaluated for impairment	1,625,449,000		1,466,484,000		1,625,449,000		1,466,484,000		'
Total loans	1,631,660,000		1,468,814,000		1,631,660,000		1,468,814,000		'
Commercial real estate	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	43,933,000		60,014,000		51,628,000		61,056,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	1,027,000		1,236,000		9,910,000		5,131,000		'
Recoveries	2,227,000		966,000		3,279,000		5,353,000		'
Provision	-4,193,000		-3,983,000		-4,057,000		-5,517,000		'
Ending Balance	40,940,000		55,761,000		40,940,000		55,761,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	3,153,000		7,464,000		3,153,000		7,464,000		'
Collectively evaluated for impairment	37,156,000		46,412,000		37,156,000		46,412,000		'
Acquired and accounted for under ASC 310-30	631,000	[1]	1,885,000	[1]	631,000	[1]	1,885,000	[1]	'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	631,000	[1]	1,885,000	[1]	631,000	[1]	1,885,000	[1]	'
Loans:	'		'		'		'		'
Individually evaluated for impairment	49,077,000		60,600,000		49,077,000		60,600,000		'
Collectively evaluated for impairment	2,597,818,000		1,577,768,000		2,597,818,000		1,577,768,000		'
Acquired and accounted for under ASC 310-30	110,357,000	[1]	159,799,000	[1]	110,357,000	[1]	159,799,000	[1]	'
Total loans	2,757,252,000		1,798,167,000		2,757,252,000		1,798,167,000		'
Allowance for loan losses and unfunded commitments acquired with deteriorated credit quality	1,200,000		'		1,200,000		'		2,200,000
Residential real estate	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	7,495,000		8,121,000		8,872,000		6,941,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	740,000		713,000		1,438,000		2,074,000		'
Recoveries	4,000		48,000		529,000		461,000		'
Provision	534,000		347,000		-670,000		2,475,000		'
Ending Balance	7,293,000		7,803,000		7,293,000		7,803,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	3,196,000		3,033,000		3,196,000		3,033,000		'
Collectively evaluated for impairment	4,097,000		4,663,000		4,097,000		4,663,000		'
Acquired and accounted for under ASC 310-30	'	[1]	107,000	[1]	'	[1]	107,000	[1]	'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	'	[1]	107,000	[1]	'	[1]	107,000	[1]	'
Loans:	'		'		'		'		'
Individually evaluated for impairment	15,811,000		15,851,000		15,811,000		15,851,000		'
Collectively evaluated for impairment	501,062,000		291,699,000		501,062,000		291,699,000		'
Acquired and accounted for under ASC 310-30	3,362,000	[1]	5,982,000	[1]	3,362,000	[1]	5,982,000	[1]	'
Total loans	520,235,000		313,532,000		520,235,000		313,532,000		'
Construction real estate	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	4,613,000		8,695,000		6,856,000		11,222,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		500,000		'
Charge-offs	5,000		26,000		75,000		855,000		'
Recoveries	25,000		420,000		201,000		827,000		'
Provision	2,174,000		-735,000		-175,000		-3,340,000		'
Ending Balance	6,807,000		8,354,000		6,807,000		8,354,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	161,000		240,000		161,000		240,000		'
Collectively evaluated for impairment	6,641,000		8,114,000		6,641,000		8,114,000		'
Acquired and accounted for under ASC 310-30	5,000	[1]	'		5,000	[1]	'		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	5,000	[1]	'		5,000	[1]	'		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	337,000		1,622,000		337,000		1,622,000		'
Collectively evaluated for impairment	230,662,000		134,524,000		230,662,000		134,524,000		'
Acquired and accounted for under ASC 310-30	24,274,000	[1]	61,446,000	[1]	24,274,000	[1]	61,446,000	[1]	'
Total loans	255,273,000		197,592,000		255,273,000		197,592,000		'
Indirect vehicle	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	1,727,000		1,537,000		1,662,000		1,324,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	1,043,000		572,000		2,546,000		1,930,000		'
Recoveries	402,000		372,000		1,283,000		1,111,000		'
Provision	643,000		293,000		1,330,000		1,125,000		'
Ending Balance	1,729,000		1,630,000		1,729,000		1,630,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	27,000		0		27,000		0		'
Collectively evaluated for impairment	1,702,000		1,630,000		1,702,000		1,630,000		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	212,000		106,000		212,000		106,000		'
Collectively evaluated for impairment	272,826,000		257,634,000		272,826,000		257,634,000		'
Total loans	273,038,000		257,740,000		273,038,000		257,740,000		'
Home equity lines	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	8,281,000		8,206,000		8,478,000		9,401,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	566,000		437,000		2,002,000		2,547,000		'
Recoveries	46,000		228,000		306,000		442,000		'
Provision	1,836,000		-152,000		2,815,000		549,000		'
Ending Balance	9,597,000		7,845,000		9,597,000		7,845,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	1,690,000		781,000		1,690,000		781,000		'
Collectively evaluated for impairment	7,907,000		7,064,000		7,907,000		7,064,000		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	25,562,000		23,278,000		25,562,000		23,278,000		'
Collectively evaluated for impairment	237,415,000		251,206,000		237,415,000		251,206,000		'
Acquired and accounted for under ASC 310-30	115,000	[1]	110,000	[1]	115,000	[1]	110,000	[1]	'
Total loans	263,092,000		274,594,000		263,092,000		274,594,000		'
Other consumer	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Beginning Balance	2,282,000		1,306,000		1,630,000		1,562,000		'
Transfer to and from allowance for unfunded credit commitments	'		'		'		'		'
Charge-offs	497,000		485,000		1,582,000		1,501,000		'
Recoveries	65,000		74,000		211,000		185,000		'
Provision	-65,000		368,000		1,526,000		1,017,000		'
Ending Balance	1,785,000		1,263,000		1,785,000		1,263,000		'
Ending allowance balance attributable to loans:	'		'		'		'		'
Individually evaluated for impairment	'		0		'		0		'
Collectively evaluated for impairment	1,785,000		1,263,000		1,785,000		1,263,000		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Allowance for credit losses	'		'		'		'		'
Acquired and accounted for under ASC 310-30	'	[1]	'		'	[1]	'		'
Loans:	'		'		'		'		'
Individually evaluated for impairment	0		0		0		0		'
Collectively evaluated for impairment	69,028,000		57,418,000		69,028,000		57,418,000		'
Acquired and accounted for under ASC 310-30	22,783,000	[1]	29,014,000	[1]	22,783,000	[1]	29,014,000	[1]	'
Total loans	91,811,000		86,432,000		91,811,000		86,432,000		'
Purchased loans	'		'		'		'		'
Allowance for credit losses [Roll Forward]	'		'		'		'		'
Provision	'		'		-904,000		'		'
Loans:	'		'		'		'		'
Total loans	94,800,000		'		94,800,000		'		'
Provision and charge-offs related to the number of pools	'		'		16		'		'
Allowance for loan losses and unfunded commitments write offs net of recoveries	'		'		$83,000		'		'

[1]	Loans acquired in business combinations and accounted for under ASC Subtopic 310-30 â€œReceivables â€” Loans and Debt Securities Acquired with Deteriorated Credit Quality.â€

Loans_Details_7

Loans (Details 7) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in the accretable yield for purchased credit-impaired loans	'	'	'	'
Balance at beginning of period	$1,218	$6,360	$2,337	$5,685
Purchases	3,252	0	3,252	0
Accretion	2,372	-2,427	679	-2,859
Other	931	0	1,505	1,107
Balance at end of period	$7,773	$3,933	$7,773	$3,933

Loans_Details_8

Loans (Details 8) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	$89,247,000		'
Estimated receivable amount from the FDIC under the loss-share agreement	1,974,000	[1]	'
Non covered loans	3,467,431,000		'
Outstanding balances on purchased loans from the FDIC	114,000,000		268,500,000
Carrying amount on loans purchased from the FDIC	109,100,000		256,400,000
Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	36,749,000		'
Estimated receivable amount from the FDIC under the loss-share agreement	-2,892,000	[1]	'
Non covered loans	183,710,000		'
Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	52,498,000		'
Estimated receivable amount from the FDIC under the loss-share agreement	4,866,000	[1]	'
Non covered loans	3,283,721,000		'
Commercial loans, commercial real estate receivable and construction loans	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Loans not covered under the loss share agreement	3,900,000	[2]	'
Commercial related	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	3,665,000	[2]	'
Non covered loans	17,769,000	[3]	'
Commercial related \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	1,410,000	[2]	'
Non covered loans	4,856,000	[3]	'
Reimbursable Amount Covered Other Real Estate Owned	231,000		'
Commercial related \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	2,255,000	[2]	'
Non covered loans	12,913,000	[3]	'
Commercial loans	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	2,135,000		'
Non covered loans	1,837,598,000		'
Commercial loans \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	827,000		'
Non covered loans	101,410,000		'
Commercial loans \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	1,308,000		'
Non covered loans	1,736,188,000		'
Commercial loans collateralized by assignment of lease payments	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Non covered loans	133,539,000		'
Commercial loans collateralized by assignment of lease payments \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Non covered loans	0		'
Commercial loans collateralized by assignment of lease payments \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Non covered loans	133,539,000		'
Commercial real estate	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	56,388,000		'
Non covered loans	1,056,198,000		'
Commercial real estate \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	32,857,000		'
Non covered loans	53,969,000		'
Commercial real estate \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	23,531,000		'
Non covered loans	1,002,229,000		'
Construction real estate	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	3,164,000		'
Non covered loans	182,225,000		'
Construction real estate \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	0		'
Non covered loans	21,110,000		'
Construction real estate \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	3,164,000		'
Non covered loans	161,115,000		'
Other	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	23,895,000		'
Non covered loans	240,102,000		'
Other \| Purchased Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	1,655,000		'
Non covered loans	2,365,000		'
Other \| Purchased Non-Credit Impaired Loans Receivable	'		'
Purchased credit-impaired loans and non-credit-impaired loans	'		'
Covered Loans	22,240,000		'
Non covered loans	$237,737,000		'

[1]	Estimated reimbursable amounts from the FDIC under the loss-share agreement exclude $231 thousand in amounts due to the FDIC related to covered other real estate owned.
[2]	Covered commercial related loans include commercial, commercial real estate and construction real estate loans acquired in connection with the Benchmark FDIC-assisted transactions.
[3]	Non-covered commercial related loans include commercial, commercial real estate and construction real estate for InBank and Heritage.

Goodwill_and_Intangibles_Detai

Goodwill and Intangibles (Details) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended		3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014	Aug. 18, 2014	Sep. 30, 2013
	Sep. 30, 2014	Sep. 30, 2013	segment	Sep. 30, 2013	Dec. 31, 2013	Taylor Capital Group, Inc.	Taylor Capital Group, Inc.	Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'	'
Number of operating segments	'	'	3	'	'	'	'	'
Goodwill, impairment loss	$0	$0	$0	$0	'	'	'	'
Carrying amount of goodwill	698,946,000	'	698,946,000	'	423,369,000	'	275,577,000	'
Goodwill, Acquired During Period	'	'	'	'	'	275,600,000	'	'
Weighted average amortization period (in years)	'	'	'5 years	'	'	'	'	'
Changes in the carrying amount of core deposit and client relationship intangibles	'	'	'	'	'	'	'	'
Balance at beginning of period	'	'	23,428,000	'	'	'	'	'
Amortization expense	-1,470,000	-1,513,000	-3,884,000	-4,595,000	'	'	'	'
Other intangibles from business combination	'	'	25,000,000	'	'	'	'	25,000,000
Balance at end of period	44,544,000	'	44,544,000	'	'	'	'	'
Gross carrying amount	79,368,000	'	79,368,000	'	'	'	'	'
Accumulated amortization	-34,824,000	'	-34,824,000	'	'	'	'	'
Net book value	44,544,000	'	44,544,000	'	'	'	'	'
Estimated future amortization expense	'	'	'	'	'	'	'	'
2014	2,114,000	'	2,114,000	'	'	'	'	'
2015	7,197,000	'	7,197,000	'	'	'	'	'
2016	6,162,000	'	6,162,000	'	'	'	'	'
2017	5,450,000	'	5,450,000	'	'	'	'	'
2018	4,874,000	'	4,874,000	'	'	'	'	'
Thereafter	18,747,000	'	18,747,000	'	'	'	'	'
Total estimated future amortization expense	$44,544,000	'	$44,544,000	'	'	'	'	'

Deposits_Details

Deposits (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Deposits [Abstract]	'	'
Demand deposit accounts, noninterest bearing	$3,807,554,000	$2,375,863,000
NOW and money market accounts	4,197,166,000	2,682,419,000
Savings accounts	931,985,000	855,394,000
Certificates of deposit, $100,000 or more	1,544,267,000	827,413,000
Other certificates of deposit	757,576,000	640,170,000
Total deposits	11,238,548,000	7,381,259,000
Brokered deposits	$655,800,000	$224,200,000

ShortTerm_Borrowings_Details

Short-Term Borrowings (Details) (USD $)	0 Months Ended
Short-Term Borrowings (Details) (USD $)	Mar. 09, 2012	Sep. 30, 2014	Dec. 31, 2013
Short-term borrowings	'	'	'
Weighted Average Cost	'	0.20%	0.18%
Amount	'	$667,160,000	$493,389,000
Fixed interest rate Federal Home Loan Bank advances	'	350,000,000	300,000,000
Federal Home Loan Bank, fixed interest rate	'	0.07%	'
Customer repurchase agreements	'	'	'
Short-term borrowings	'	'	'
Weighted Average Cost	'	0.21%	0.20%
Amount	'	248,150,000	193,389,000
Federal Home Loan Bank advances	'	'	'
Short-term borrowings	'	'	'
Weighted Average Cost	'	0.07%	0.17%
Amount	'	350,000,000	300,000,000
Federal funds purchased	'	'	'
Short-term borrowings	'	'	'
Weighted Average Cost	'	0.45%	0.00%
Amount	'	54,010,000	0
Line of credit	'	'	'
Short-term borrowings	'	'	'
Weighted Average Cost	'	2.00%	0.00%
Amount	'	15,000,000	0
Unsecured line of credit	$35,000,000	'	'
Description of interest rate basis	'one month LIBOR	'	'
Libor [Member] \| Line of credit	'	'	'
Short-term borrowings	'	'	'
Debt instrument, basis spread on variable rate	1.85%	'	'

Longterm_Borrowings_Details

Long-term Borrowings (Details) (USD $)	9 Months Ended
Long-term Borrowings (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Long-term borrowings	'	'
Federal Home Loan Bank advances	$4,200,000	$4,300,000
Effective interest rates on Federal Home Loan Bank advances, low end of range (as a percent)	3.23%	'
Effective interest rates on Federal Home Loan Bank advances, high end of range (as a percent)	5.87%	'
Principal payments due on long-term borrowings	'	'
Long-term Debt	77,269,000	62,159,000
Notes payable to banks	'	'
Long-term borrowings	'	'
Minimum interest rates (as a percent)	2.50%	'
Maximum interest rates (as a percent)	12.00%	'
Equipment pledged as collateral	28,300,000	25,700,000
Principal payments due on long-term borrowings	'	'
Long-term Debt	32,800,000	17,500,000
Structured repurchase agreement	'	'
Long-term borrowings	'	'
Term of structured repurchase agreement (in years)	'10 years	'
Fixed interest rate, if option not exercised (as a percent)	4.75%	'
Principal payments due on long-term borrowings	'	'
Long-term Debt	$40,000,000	'

Junior_Subordinated_Notes_Issu2

Junior Subordinated Notes Issued to Capital Trusts (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 22, 2014

Sep. 30, 2014

Sep. 22, 2014

Junior Subordinated Notes

Coal City Capital Trust I

MB Financial Capital Trust II

MB Financial Capital Trust III

MB Financial Capital Trust IV

MB Financial Capital Trust V

MB Financial Capital Trust VI

FOBB Statutory Trust III

TAYC Capital Trust II

Taylor Capital Trust I

Maximum

Junior Subordinated Notes

Outstanding junior subordinated notes

Principal balance

$185,681

$152,065

$25,774

$36,083

$10,310

$20,619

$30,928

$23,196

$5,155

[1]

$41,238

[2]

Debt instrument, basis spread on variable rate

1.80%

1.40%

1.50%

1.52%

1.30%

2.80%

[1]

2.68%

[2]

Description of annual interest rate basis

'3-mo LIBOR

[1]

'3-mo LIBOR

[2]

Period for deferment of payment of interest on notes (in years)

'5 years

Interest rate

9.75%

Repayments of trust preferred securities

8,830

59,079

45,400

Gain on extinguishment of debt

$1,895

$1,900

[1]

FOBB Statutory Trust III was established by First Oak Brook Bancshares, Inc. (â€œFOBBâ€) prior to the Company's acquisition of FOBB, and the junior subordinated notes issued by FOBB to FOBB Statutory Trust III were assumed by the Company upon completion of the acquisition.

[2]

Junior_Subordinated_Notes_Issu3

Junior Subordinated Notes Issued to Capital Trusts (Details 2) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Coal City Capital Trust I \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	$25,000
Debt instrument, basis spread on variable rate	1.80%
Description of annual interest rate basis	'3-mo LIBOR
MB Financial Capital Trust II \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	35,000
Debt instrument, basis spread on variable rate	1.40%
Description of annual interest rate basis	'3-mo LIBOR
MB Financial Capital Trust III \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	10,000
Debt instrument, basis spread on variable rate	1.50%
Description of annual interest rate basis	'3-mo LIBOR
MB Financial Capital Trust IV \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	20,000
Debt instrument, basis spread on variable rate	1.52%
Description of annual interest rate basis	'3-mo LIBOR
MB Financial Capital Trust V \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	30,000
Debt instrument, basis spread on variable rate	1.30%
Description of annual interest rate basis	'3-mo LIBOR
MB Financial Capital Trust VI \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	22,500
Debt instrument, basis spread on variable rate	1.30%
Description of annual interest rate basis	'3-mo LIBOR
FOBB Statutory Trust III \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	5,000	[1]
Debt instrument, basis spread on variable rate	2.80%	[1]
Description of annual interest rate basis	'3-mo LIBOR	[1]
TAYC Capital Trust II \| Trust preferred securities issued by each trust	'
Trust preferred securities issued by each trust	'
Face Value	$40,000	[2]
Debt instrument, basis spread on variable rate	2.68%	[2]
Description of annual interest rate basis	'3-mo LIBOR	[2]
Junior Subordinated Notes \| Coal City Capital Trust I	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.80%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| MB Financial Capital Trust II	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.40%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| MB Financial Capital Trust III	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.50%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| MB Financial Capital Trust IV	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.52%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| MB Financial Capital Trust V	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.30%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| MB Financial Capital Trust VI	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	1.30%
Description of annual interest rate basis	'3-mo LIBOR
Junior Subordinated Notes \| FOBB Statutory Trust III	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	2.80%	[1]
Description of annual interest rate basis	'3-mo LIBOR	[1]
Junior Subordinated Notes \| TAYC Capital Trust II	'
Trust preferred securities issued by each trust	'
Debt instrument, basis spread on variable rate	2.68%	[2]
Description of annual interest rate basis	'3-mo LIBOR	[2]

[1]	FOBB Statutory Trust III was established by First Oak Brook Bancshares, Inc. (â€œFOBBâ€) prior to the Company's acquisition of FOBB, and the junior subordinated notes issued by FOBB to FOBB Statutory Trust III were assumed by the Company upon completion of the acquisition.
[2]	TAYC Capital Trust II was established by Taylor Capital prior to the Company's acquisition of Taylor Capital, and the junior subordinated notes issued by Taylor Capital to TAYC Capital Trust II were assumed by the Company upon completion of the acquisition.

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	9 Months Ended
Commitments and Contingencies (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Commitments [Abstract]	'	'
Maximum maturity period for letters of credit (in years)	'5 years	'
Increase (decrease) in maximum potential amount of future payments under letters of credit	$66,200,000	'
Dollar amount of letters of credit outstanding	136,400,000	70,300,000
Letters of credit issued or renewed	109,500,000	'
Capital expenditure commitments outstanding	1,700,000	'
Home equity lines	'	'
Commitments and contingencies	'	'
Dollar amount of line of credit outstanding	216,130,000	208,581,000
Other commitments	'	'
Commitments and contingencies	'	'
Dollar amount of line of credit outstanding	2,714,127,000	1,214,391,000
Standby	'	'
Commitments and contingencies	'	'
Dollar amount of line of credit outstanding	130,057,000	69,556,000
Commercial	'	'
Commitments and contingencies	'	'
Dollar amount of line of credit outstanding	$6,370,000	$708,000

Commitments_and_Contingencies_2

Commitments and Contingencies (Details 2) (States and political subdivisions, State of Illinois)	9 Months Ended
	Sep. 30, 2014
States and political subdivisions \| State of Illinois	'
Concentrations of credit risk	'
Percentage of investments issued by states and political subdivisions that were within the state of Illinois	27.00%

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	$1,758,650		$1,118,912
Loans held for sale	553,627		629
Mortgage servicing rights	249,376		413
Derivative financial instruments, assets	8,113		5,875
Derivative financial instrument, liabilities	30,650		12,753
U.S. Government sponsored agencies and enterprises	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	65,829		52,068
States and political subdivisions	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	409,033		19,143
Residential mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	801,940		701,233
Commercial mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	204,162		52,941
Corporate bonds	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	267,239		283,070
Equity securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	10,447		10,457
Recurring basis \| Total Fair Value	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Loans held for sale	553,627		629
Assets held in trust for deferred compensation	16,408		10,679
Derivative financial instruments, assets	33,953		18,645
Other liabilities	16,062	[1]	10,569	[1]
Derivative financial instrument, liabilities	34,492		18,632
Recurring basis \| Total Fair Value \| U.S. Government sponsored agencies and enterprises	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	65,829		52,068
Recurring basis \| Total Fair Value \| States and political subdivisions	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	409,033		19,143
Recurring basis \| Total Fair Value \| Residential mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	801,940		701,233
Recurring basis \| Total Fair Value \| Commercial mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	204,162		52,941
Recurring basis \| Total Fair Value \| Corporate bonds	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	267,239		283,070
Recurring basis \| Total Fair Value \| Equity securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	10,447		10,457
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	10,447		10,457
Loans held for sale	0		0
Assets held in trust for deferred compensation	16,408		10,679
Derivative financial instruments, assets	138		0
Other liabilities	16,062	[1]	10,569	[1]
Derivative financial instrument, liabilities	2,112		0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Equity securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	10,447		10,457
Recurring basis \| Significant Other Observable Inputs (Level 2)	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	1,746,849		1,102,599
Loans held for sale	553,627		629
Derivative financial instruments, assets	30,288		18,645
Derivative financial instrument, liabilities	32,380		18,632
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government sponsored agencies and enterprises	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	65,829		52,068
Recurring basis \| Significant Other Observable Inputs (Level 2) \| States and political subdivisions	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	408,526		19,143
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	801,392		700,542
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Commercial mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	204,162		52,941
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Corporate bonds	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	266,940		277,905
Recurring basis \| Significant Unobservable Inputs (Level 3)	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	1,354		5,856
Loans held for sale	0		0
Mortgage servicing rights	249,376		'
Derivative financial instruments, assets	3,527		0
Derivative financial instrument, liabilities	0		0
Recurring basis \| Significant Unobservable Inputs (Level 3) \| States and political subdivisions	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	507		'
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	548		691
Recurring basis \| Significant Unobservable Inputs (Level 3) \| Corporate bonds	'		'
Financial assets and financial liabilities measured at fair value on a recurring basis	'		'
Securities available for sale, at fair value	$299		$5,165

[1]	Liabilities associated with assets held in trust for deferred compensation

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)

9 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Investment securities

States and political subdivisions

Residential mortgage-backed securities

Corporate bonds

Mortgage servicing rights

Mortgage derivative instruments

Significant Unobservable Inputs (Level 3)

Recurring basis

Investment securities

States and political subdivisions

Residential mortgage-backed securities

Corporate bonds

Mortgage servicing rights

Mortgage derivative instruments

Minimum

Maximum

Residential mortgage-backed securities

Mortgage servicing rights

Mortgage derivative instruments

Residential mortgage-backed securities

Mortgage servicing rights

Mortgage derivative instruments

Assets measured at fair value on a nonrecurring basis

Credit assumption (as a percent)

45.00%

20.00%

Constant prepayment rates (as a percent)

1.00%

4.30%

3.00%

23.70%

Discount rate

10.00%

16.25%

Maturity

'39 months

'457 months

Delinquencies

0.00%

25.00%

Cost to services

$60

$392

Expected closing ratio

28.58%

94.00%

Expected delivery price

0.97%

1.10%

Securities available for sale, at fair value

1,758,650,000

1,118,912,000

409,033,000

19,143,000

801,940,000

701,233,000

267,239,000

283,070,000

1,354,000

5,856,000

507,000

548,000

691,000

299,000

5,165,000

Mortgage servicing rights

249,376,000

413,000

249,376,000

Derivative financial instruments, assets

8,113,000

5,875,000

3,527,000

Financial assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

Balance at the beginning of the period

5,856,000

6,071,000

Acquired through business combination

507,000

232,783,000

5,922,000

Purchases

489,000

Originations

8,587,000

Other comprehensive income

-71,000

-59,000

7,517,000

-2,395,000

Principal payments

-281,000

-118,000

Impairment charge

-92,000

Transferred out of Level 3

-4,565,000

Balance at the end of the period

$1,354,000

$5,894,000

$249,376,000

$3,527,000

Fair value assumption, allowance for impaired real estate loans percentage

90.00%

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 3) (Mortgage servicing rights, USD $)	9 Months Ended
	Sep. 30, 2014
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'
Impact on fair value of 10% adverse change	($8,665,000)
Impact on fair value of 20% adverse change	-16,778,000
Impact on fair value of 10% adverse change	-10,325,000
Impact on fair value of 20% adverse change	-19,857,000
Impact on fair value of 10% adverse change	-1,085,000
Impact on fair value of 20% adverse change	-1,755,000
Impact on fair value of 10% adverse change	-3,491,000
Impact on fair value of 20% adverse change	-6,981,000
Weighted average	'
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'
Weighted average prepayment speed (CPR)	9.10%
Weighted average discount rate	10.11%
Weighted average delinquency rate	1.35%
Weighted average costs to service	$70

Fair_Value_Measurements_Detail3

Fair Value Measurements (Details 4) (Nonrecurring basis, USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Total Fair Value	'	'
Financial Assets:	'	'
Impaired loans	$55,346	$77,497
Foreclosed assets	41,333	44,601
Significant Unobservable Inputs (Level 3)	'	'
Financial Assets:	'	'
Impaired loans	55,346	77,497
Foreclosed assets	$41,333	$44,601
Significant Unobservable Inputs (Level 3) \| Maximum	'	'
Financial Assets:	'	'
Appraisal adjustment impaired loans (as a percent)	10.00%	'
Appraisal adjustment foreclosed assets (as a percent)	10.00%	'
Significant Unobservable Inputs (Level 3) \| Minimum	'	'
Financial Assets:	'	'
Appraisal adjustment impaired loans (as a percent)	5.00%	'
Appraisal adjustment foreclosed assets (as a percent)	5.00%	'

Fair_Value_Measurements_Detail4

Fair Value Measurements (Details 5) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'	'
Maximum maturity period of short-term borrowings where carrying value approximates fair value (in days)	'90 days	'
Minimum maturity period of short-term borrowings where fair value is based on discounted value of contractual cash flows (in days)	'90 days	'
Financial Assets:	'	'
Cash and due from banks	$267,405	$205,193
Interest bearing deposits with banks	179,391	268,266
Federal funds sold	0	42,950
Securities available for sale, at fair value	1,758,650	1,118,912
Investment securities held to maturity	1,005,349	1,182,533
Investment securities held to maturity	1,045,517	1,198,929
Non-marketable securities - FHLB and FRB stock	75,569	51,417
Loans held for sale	553,627	629
Loans, net	8,880,207	5,600,805
Derivative financial instruments	8,113	5,875
Financial Liabilities:	'	'
Non-interest bearing deposits	3,807,554	2,375,863
Interest bearing deposits	7,430,994	5,005,396
Short-term borrowings	667,160	493,389
Long-term borrowings	77,269	62,159
Junior subordinated notes issued to capital trusts	185,681	152,065
Derivative financial instruments	30,650	12,753
Carrying Amount	'	'
Financial Assets:	'	'
Cash and due from banks	267,405	205,193
Interest bearing deposits with banks	179,391	268,266
Federal funds sold	'	42,950
Securities available for sale, at fair value	1,758,650	1,118,912
Investment securities held to maturity	1,005,349	'
Investment securities held to maturity	'	1,182,533
Non-marketable securities - FHLB and FRB stock	75,569	51,417
Loans held for sale	553,627	629
Loans, net	8,880,207	'
Loans, net	'	5,600,805
Accrued interest receivable	47,956	36,593
Derivative financial instruments	33,953	18,645
Financial Liabilities:	'	'
Non-interest bearing deposits	3,807,554	2,375,863
Interest bearing deposits	7,430,994	5,005,396
Short-term borrowings	667,160	493,389
Long-term borrowings	77,269	'
Long-term borrowings	'	62,159
Junior subordinated notes issued to capital trusts	185,681	152,065
Accrued interest payable	3,420	2,042
Derivative financial instruments	34,492	18,632
Total Fair Value	'	'
Financial Assets:	'	'
Cash and due from banks	267,405	205,193
Interest bearing deposits with banks	179,391	268,266
Federal funds sold	'	42,950
Securities available for sale, at fair value	1,758,650	1,118,912
Investment securities held to maturity	1,045,517	1,198,929
Non-marketable securities - FHLB and FRB stock	75,569	51,417
Loans held for sale	553,627	629
Loans, net	8,871,886	5,583,759
Accrued interest receivable	47,956	36,593
Derivative financial instruments	33,953	18,645
Financial Liabilities:	'	'
Non-interest bearing deposits	3,807,554	2,375,863
Interest bearing deposits	7,438,126	5,012,928
Short-term borrowings	667,156	493,384
Long-term borrowings	80,628	66,301
Junior subordinated notes issued to capital trusts	134,011	101,247
Accrued interest payable	3,420	2,042
Derivative financial instruments	34,492	18,632
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Financial Assets:	'	'
Cash and due from banks	267,405	205,193
Interest bearing deposits with banks	179,391	268,266
Federal funds sold	'	42,950
Securities available for sale, at fair value	10,447	10,457
Investment securities held to maturity	0	0
Non-marketable securities - FHLB and FRB stock	0	0
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	47,956	36,593
Derivative financial instruments	138	0
Financial Liabilities:	'	'
Non-interest bearing deposits	3,807,554	2,375,863
Interest bearing deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Junior subordinated notes issued to capital trusts	0	0
Accrued interest payable	3,420	2,042
Derivative financial instruments	2,112	0
Recurring basis \| Significant Other Observable Inputs (Level 2)	'	'
Financial Assets:	'	'
Cash and due from banks	0	0
Interest bearing deposits with banks	0	0
Federal funds sold	'	0
Securities available for sale, at fair value	1,746,849	1,102,599
Investment securities held to maturity	1,045,517	1,198,929
Non-marketable securities - FHLB and FRB stock	0	0
Loans held for sale	553,627	629
Loans, net	0	0
Accrued interest receivable	0	0
Derivative financial instruments	30,288	18,645
Financial Liabilities:	'	'
Non-interest bearing deposits	0	0
Interest bearing deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Junior subordinated notes issued to capital trusts	0	0
Accrued interest payable	0	0
Derivative financial instruments	32,380	18,632
Recurring basis \| Significant Unobservable Inputs (Level 3)	'	'
Financial Assets:	'	'
Cash and due from banks	0	0
Interest bearing deposits with banks	0	0
Federal funds sold	'	0
Securities available for sale, at fair value	1,354	5,856
Investment securities held to maturity	0	0
Non-marketable securities - FHLB and FRB stock	75,569	51,417
Loans held for sale	0	0
Loans, net	8,871,886	5,583,759
Accrued interest receivable	0	0
Derivative financial instruments	3,527	0
Financial Liabilities:	'	'
Non-interest bearing deposits	0	0
Interest bearing deposits	7,438,126	5,012,928
Short-term borrowings	667,156	493,384
Long-term borrowings	80,628	66,301
Junior subordinated notes issued to capital trusts	134,011	101,247
Accrued interest payable	0	0
Derivative financial instruments	$0	$0

Stock_Incentive_Plans_Details

Stock Incentive Plans (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

28-May-14

Sep. 30, 2014

28-May-14

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2014

Omnibus Incentive Plan (the "Omnibus Plan")

Stock options

Restricted stock and restricted stock units

Restricted stock

Performance-based restricted stock units

Market-based restricted stock

Minimum

Maximum

Taylor Capital Group, Inc.

Director

Restricted stock and restricted stock units

Performance-based restricted stock units

Restricted stock and restricted stock units

Performance-based restricted stock units

Impact of the share-based payment plans in the financial statements

Total cost of share-based payment plans during the period

$2,338,000

$1,388,000

$6,593,000

$3,860,000

Amount of related income tax benefit recognized in income

922,000

548,000

2,592,000

1,530,000

Stock-based compensation

Number of additional authorized shares

3,100,000

Number of common shares authorized for issuance

11,400,000

13,800,000

Number of additional shares authorized

2,400,000

Numerator of shares granted beyond threshold limit

Denominator of shares granted beyond threshold limit

Percentage of shares authorized for issuance

10.00%

Number of shares available for future grants

6,214,365

Continuous service period for vesting of option awards (in years)

'4 years

Contractual terms of option awards (in years)

'10 years

Minimum vesting period (in years)

'3 years

'5 years

'1 year

'2 years

'4 years

Maximum percentage of fees with an option to be received in equity-based incentive awards

70.00%

100.00%

Period of restriction for sale of underlying shares (in months)

'6 months

Equity instruments other than options, vested in period, intrinsic value

8,400,000

5,700,000

Number of shares issued

48,569

56,752

65,333

92,717

Percentage of shares earned to number of units issued

0.00%

175.00%

Performance based restricted units performance period (in years)

'3 years

Share based compensation restricted stock units multiplier (in percent)

100.00%

Number of consecutive trading days over which a specified closing price of the entity's stock is maintained

'10 days

Minimum closing price of the entity's stock (in dollars per share)

$27

Unrecognized compensation cost

19,800,000

Expected weighted-average period for recognition of unrecognized compensation expense (in years)

'2 years 5 months 20 days

Options outstanding activity

Options outstanding at the beginning of the period (in shares)

2,443,752

Granted (in shares)

221,216

Exercised (in shares)

-163,138

Expired or cancelled (in shares)

-156,104

Forfeited (in shares)

-26,313

Options outstanding at the end of the period (in shares)

2,319,413

Options exercisable at end of the period (in shares)

1,742,430

Weighted Average Exercise Price

Options outstanding at the beginning of the period (in dollars per share)

$27.57

Granted (in dollars per share)

$29.47

Exercised (in dollars per share)

$18.90

Expired or cancelled (in dollars per share)

$35.78

Forfeited (in dollars per share)

$21.81

Options outstanding at the end of the period (in dollars per share)

$27.87

Options exercisable at end of the period (in dollars per share)

$28.91

Weighted Average Remaining Contractual Term (In Years)

Options outstanding at the end of the period

'4 years 7 months 28 days

Options exercisable at end of the period

'3 years 5 months 28 days

Aggregate Intrinsic Value

Options outstanding at the end of the period

6,755,000

Options exercisable at end of the period

4,684,000

Fair value assumptions

Risk free interest rate (as a percent)

1.83%

Expected volatility of Company's stock (as a percent)

23.10%

Expected dividend yield (as a percent)

1.65%

Expected life of options (in years)

'5 years 7 months 0 days

Weighted average fair value per option of options granted during the year (in dollars per share)

$5.93

Total intrinsic value of options exercised

$1,600,000

$929,000

Changes in restricted shares

Nonvested shares of restricted stock and nonvested restricted stock units at the beginning of the period

685,719

Granted (in shares)

442,251

Vested (in shares)

-298,533

Forfeited (in shares)

-17,611

Nonvested shares of restricted stock and nonvested restricted stock units at the end of the period

811,826

Weighted Average Grant Date Fair Value, restricted shares

Shares Outstanding at the beginning of the period (in dollars per share)

$22.59

Granted (in dollars per share)

$29.22

Vested (in dollars per share)

$20.41

Forfeited (in dollars per share)

$24.58

Nonvested shares of restricted stock and nonvested restricted stock units at the end of the period (in dollars per share)

$26.96

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details) (USD $)	3 Months Ended			9 Months Ended			12 Months Ended
Derivative Financial Instruments (Details) (USD $)	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Derivative [Line Items]	'		'	'		'	'
Net amount payable under interest rate swap	'		'	$964,000		'	$25,000
Interest rate swap credit risk exposure	18,800,000		'	18,800,000		'	'
Asset Derivatives, Notional Amount	2,305,903,000		'	2,305,903,000		'	667,934,000
Asset Derivatives, Estimated Fair Value	33,953,000		'	33,953,000		'	18,645,000
Liability Derivatives, Notional Amount	2,102,275,000		'	2,102,275,000		'	684,999,000
Liability Derivatives, Estimated Fair Value	-34,492,000		'	-34,492,000		'	-18,632,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	-680,000		-22,000	-559,000		-48,000	'
Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	2,067,903,000	[1]	'	2,067,903,000	[1]	'	667,934,000	[1]
Asset Derivatives, Estimated Fair Value	30,441,000	[1]	'	30,441,000	[1]	'	18,645,000	[1]
Liability Derivatives, Notional Amount	1,785,067,000	[1]	'	1,785,067,000	[1]	'	684,761,000	[1]
Liability Derivatives, Estimated Fair Value	-29,093,000	[1]	'	-29,093,000	[1]	'	-18,609,000	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	1,189,000		-21,000	1,312,000		-57,000	'
Commercial loan interest rate swaps	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Liability Derivatives, Notional Amount	208,000		'	208,000		'	'
Interest rate swap contracts \| Derivative instruments designated as hedges of fair value	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	238,000,000	[1]	'	238,000,000	[1]	'	0	[1]
Asset Derivatives, Estimated Fair Value	3,512,000	[1]	'	3,512,000	[1]	'	0	[1]
Liability Derivatives, Notional Amount	317,208,000	[2]	'	317,208,000	[2]	'	238,000	[2]
Liability Derivatives, Estimated Fair Value	-5,399,000	[2]	'	-5,399,000	[2]	'	-23,000	[2]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	-1,869,000		-1,000	-1,871,000		9,000	'
Interest rate swap contracts \| Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	983,309,000	[1]	'	983,309,000	[1]	'	550,883,000	[1]
Asset Derivatives, Estimated Fair Value	24,441,000	[1]	'	24,441,000	[1]	'	17,298,000	[1]
Liability Derivatives, Notional Amount	984,081,000	[1]	'	984,081,000	[1]	'	551,798,000	[1]
Liability Derivatives, Estimated Fair Value	-24,787,000	[1]	'	-24,787,000	[1]	'	-17,350,000	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	-312,000		7,000	-294,000		30,000	'
Interest rate options contracts \| Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	56,105,000	[1]	'	56,105,000	[1]	'	83,907,000	[1]
Asset Derivatives, Estimated Fair Value	401,000	[1]	'	401,000	[1]	'	323,000	[1]
Liability Derivatives, Notional Amount	56,105,000	[1]	'	56,105,000	[1]	'	84,953,000	[1]
Liability Derivatives, Estimated Fair Value	-401,000	[1]	'	-401,000	[1]	'	-323,000	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	0		0	0		0	'
Foreign exchange contracts \| Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	22,866,000	[1]	'	22,866,000	[1]	'	31,361,000	[1]
Asset Derivatives, Estimated Fair Value	1,270,000	[1]	'	1,270,000	[1]	'	1,006,000	[1]
Liability Derivatives, Notional Amount	20,392,000	[1]	'	20,392,000	[1]	'	47,760,000	[1]
Liability Derivatives, Estimated Fair Value	-1,138,000	[1]	'	-1,138,000	[1]	'	-935,000	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	4,000		-12,000	61,000		-7,000	'
Spot foreign exchange contract \| Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	768,000	[1]	'	768,000	[1]	'	0	[1]
Asset Derivatives, Estimated Fair Value	9,000	[1]	'	9,000	[1]	'	0	[1]
Liability Derivatives, Notional Amount	1,256,000	[1]	'	1,256,000	[1]	'	0	[1]
Liability Derivatives, Estimated Fair Value	-18,000	[1]	'	-18,000	[1]	'	0	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	-17,000		0	-9,000		0	'
Mortgage related derivatives \| Stand-alone derivative instruments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Asset Derivatives, Notional Amount	1,004,855,000	[1]	'	1,004,855,000	[1]	'	1,783,000	[1]
Asset Derivatives, Estimated Fair Value	4,320,000	[1]	'	4,320,000	[1]	'	18,000	[1]
Liability Derivatives, Notional Amount	723,233,000	[1]	'	723,233,000	[1]	'	250,000	[1]
Liability Derivatives, Estimated Fair Value	-2,749,000	[1]	'	-2,749,000	[1]	'	-1,000	[1]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net [Abstract]	'		'	'		'	'
Amounts of gain or (loss) recognized in income on derivatives	$1,514,000		($16,000)	$1,554,000		($80,000)	'

[1]	These portfolio swaps are not designated as hedging instruments under ASC Topic 815.
[2]	Hedged mortgage servicing rights asset and fixed-rate commercial real estate loans

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details 2) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Financial Assets, Gross Amount Recognized	$8,113	$5,875
Financial Assets, Gross Amount Offset	0	0
Financial Assets, Net Amount Recognized	8,113	5,875
Financial Liabilities, Gross Amount Recognized	30,650	12,753
Financial Liabilities, Gross Amount Offset	0	0
Financial Liabilities, Net Amount Recognized	30,650	12,753
Repurchase Agreements, Financial Assets, Gross Amount Recognized	0	0
Repurchase Agreements, Financial Assets, Gross Amount Offset	0	0
Repurchase Agreements, Financial Assets, Net Amount Recognized	0	0
Repurchase Agreements, Financial Liabilities, Gross Amount Recognized	248,150	193,389
Repurchase Agreements, Financial Liabilities, Gross Amount Offset	0	0
Repurchase Agreements, Financial Liabilities, Net Amount Recognized	248,150	193,389
Total Financial Assets, Gross Amount Recognized	8,113	5,875
Total Financial Assets, Gross Amount Offset	0	0
Total Financial Assets, Net Amount Recognized	8,113	5,875
Total Financial Liabilities, Gross Amount Recognized	278,800	206,142
Total Financial Liabilities, Gross Amount Offset	0	0
Total Financial Liabilities, Net Amount Recognized	278,800	206,142
Interest rate swaps, caps and floors	'	'
Derivative [Line Items]	'	'
Financial Assets, Gross Amount Recognized	6,539	5,792
Financial Assets, Gross Amount Offset	0	0
Financial Assets, Net Amount Recognized	6,539	5,792
Financial Liabilities, Gross Amount Recognized	27,562	11,904
Financial Liabilities, Gross Amount Offset	0	0
Financial Liabilities, Net Amount Recognized	27,562	11,904
Foreign currency forward contracts	'	'
Derivative [Line Items]	'	'
Financial Assets, Gross Amount Recognized	840	80
Financial Assets, Gross Amount Offset	0	0
Financial Assets, Net Amount Recognized	840	80
Financial Liabilities, Gross Amount Recognized	379	848
Financial Liabilities, Gross Amount Offset	0	0
Financial Liabilities, Net Amount Recognized	379	848
Mortgage related derivatives	'	'
Derivative [Line Items]	'	'
Financial Assets, Gross Amount Recognized	734	3
Financial Assets, Gross Amount Offset	0	0
Financial Assets, Net Amount Recognized	734	3
Financial Liabilities, Gross Amount Recognized	2,709	1
Financial Liabilities, Gross Amount Offset	0	0
Financial Liabilities, Net Amount Recognized	$2,709	$1

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details 3) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Financial Assets, Net Amount Recognized	$8,113	$5,875
Financial Assets, Financial Instruments	-7,724	-2,912
Financial Assets, Collateral	0	0
Financial Assets, Net Amount	389	2,963
Financial Liabilities, Net Amount Recognized	30,650	12,753
Financial Liabilities, Financial Instruments	-7,724	-2,912
Financial Liabilities, Collateral	-22,548	-9,786
Financial Liabilities, Net Amount	378	55
Repurchase Agreements, Financial Assets, Net Amount Recognized	0	0
Repurchase Agreements, Financial Assets, Financial Instruments	0	0
Repurchase Agreements, Financial Assets, Collateral	0	0
Repurchase Agreements, Financial Assets, Net Amount	0	0
Repurchase Agreements, Financial Liabilities, Net Amount Recognized	248,150	193,389
Repurchase Agreements, Financial Liabilities, Financial Instruments	0	0
Repurchase Agreements, Financial Liabilities, Financial Instruments	-248,150	-193,389
Repurchase Agreements, Financial Liabilities, Collateral	0	0
Total Financial Assets, Net Amount Recognized	8,113	5,875
Total Financial Assets, Financial Instruments	-7,724	-2,912
Total Financial Assets, Collateral	0	0
Total Financial Assets, Net Amount	389	2,963
Total Financial Liabilities, Net Amount Recognized	278,800	206,142
Total Financial Liabilities, Financial Instruments	-7,724	-2,912
Total Financial Liabilities, Collateral	-270,698	-203,175
Total Financial Liabilities, Net Amount	378	55
Counterparty A	'	'
Derivative [Line Items]	'	'
Financial Assets, Net Amount Recognized	172	883
Financial Assets, Financial Instruments	-172	-883
Financial Assets, Collateral	0	0
Financial Assets, Net Amount	0	0
Financial Liabilities, Net Amount Recognized	8,578	10,669
Financial Liabilities, Financial Instruments	-172	-883
Financial Liabilities, Collateral	-8,406	-9,786
Financial Liabilities, Net Amount	0	0
Counterparty B	'	'
Derivative [Line Items]	'	'
Financial Assets, Net Amount Recognized	3,792	1,836
Financial Assets, Financial Instruments	-3,792	-412
Financial Assets, Collateral	0	0
Financial Assets, Net Amount	0	1,424
Financial Liabilities, Net Amount Recognized	8,680	412
Financial Liabilities, Financial Instruments	-3,792	-412
Financial Liabilities, Collateral	-4,888	0
Financial Liabilities, Net Amount	0	0
Counterparty C	'	'
Derivative [Line Items]	'	'
Financial Assets, Net Amount Recognized	5	2,380
Financial Assets, Financial Instruments	-5	-1,612
Financial Assets, Collateral	0	0
Financial Assets, Net Amount	0	768
Financial Liabilities, Net Amount Recognized	4,125	1,612
Financial Liabilities, Financial Instruments	-5	-1,612
Financial Liabilities, Collateral	-4,120	0
Financial Liabilities, Net Amount	0	0
Other counterparties	'	'
Derivative [Line Items]	'	'
Financial Assets, Net Amount Recognized	4,144	776
Financial Assets, Financial Instruments	-3,755	-5
Financial Assets, Collateral	0	0
Financial Assets, Net Amount	389	771
Financial Liabilities, Net Amount Recognized	9,267	60
Financial Liabilities, Financial Instruments	-3,755	-5
Financial Liabilities, Collateral	-5,134	0
Financial Liabilities, Net Amount	$378	$55

Operating_Segments_Details

Operating Segments (Details) (USD $)	3 Months Ended			9 Months Ended
Operating Segments (Details) (USD $)	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'		'	'		'	'
Net interest income	$95,612,000		$68,908,000	$231,012,000		$204,073,000	'
Provision for credit losses	3,109,000		-3,304,000	2,309,000		-2,804,000	'
Non-interest income	61,087,000		37,707,000	137,627,000		115,349,000	'
Non-interest expense	142,201,000	[1]	76,265,000	296,278,000	[1]	217,947,000	'
Income tax expense	4,488,000		9,254,000	20,076,000		29,680,000	'
Net income	6,901,000		24,400,000	49,976,000		74,599,000	'
Total assets	14,506,043,000		9,257,618,000	14,506,043,000		9,257,618,000	9,641,427,000
Taylor Capital Group, Inc.	'		'	'		'	'
Segment Reporting Information [Line Items]	'		'	'		'	'
Pretax merger related costs	27,200,000		'	28,300,000		'	'
Banking	'		'	'		'	'
Segment Reporting Information [Line Items]	'		'	'		'	'
Net interest income	88,863,000		67,433,000	219,248,000		200,571,000	'
Provision for credit losses	3,172,000		-3,348,000	2,488,000		-2,930,000	'
Non-interest income	27,965,000		23,484,000	77,842,000		69,698,000	'
Non-interest expense	117,325,000	[1]	67,873,000	252,952,000	[1]	193,182,000	'
Income tax expense	-1,287,000		6,402,000	9,345,000		20,411,000	'
Net income	-2,382,000		19,990,000	32,305,000		59,606,000	'
Total assets	13,212,350,000		8,873,765,000	13,212,350,000		8,873,765,000	'
Leasing	'		'	'		'	'
Segment Reporting Information [Line Items]	'		'	'		'	'
Net interest income	3,216,000		1,475,000	8,231,000		3,502,000	'
Provision for credit losses	-58,000		44,000	-174,000		126,000	'
Non-interest income	16,299,000		14,046,000	42,716,000		44,329,000	'
Non-interest expense	9,721,000	[1]	8,392,000	28,171,000	[1]	24,765,000	'
Income tax expense	3,693,000		2,781,000	8,649,000		8,740,000	'
Net income	6,159,000		4,304,000	14,301,000		14,200,000	'
Total assets	490,690,000		383,853,000	490,690,000		383,853,000	'
Mortgage Banking	'		'	'		'	'
Segment Reporting Information [Line Items]	'		'	'		'	'
Net interest income	3,533,000		0	3,533,000		0	'
Provision for credit losses	-5,000		0	-5,000		0	'
Non-interest income	16,823,000		177,000	17,069,000		1,322,000	'
Non-interest expense	15,155,000	[1]	0	15,155,000	[1]	0	'
Income tax expense	2,082,000		71,000	2,082,000		529,000	'
Net income	3,124,000		106,000	3,370,000		793,000	'
Total assets	$803,003,000		$0	$803,003,000		$0	'

[1]	Includes merger related expenses of $27.2 million and $28.3 million in the banking segment for the three and nine months ended September 30, 2014, respectively.

Preferred_Stock_Details

Preferred Stock (Details) (USD $)	9 Months Ended
Preferred Stock (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Equity [Abstract]	'	'	'
Preferred stock, shares outstanding	4,000,000	'	0
Preferred stock, liquidation preference per share (in dollars per share)	$25	'	$0
Preferred stock, dividend rate, percentage	8.00%	0.00%	'