Capital Bank Financial (CBF) 10-Q 7 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014	Jul. 31, 2014
		Common Class A [Member]	Common Class B [Member]
Document Information [Line Items]	'	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Jun-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q2	'	'
Entity Registrant Name	'Capital Bank Financial Corp.	'	'
Entity Central Index Key	'0001479750	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	30,669,525	18,224,977

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$109,963	$118,937
Interest-bearing deposits with banks	31,070	45,504
Total cash and cash equivalents	141,033	164,441
Trading securities	6,515	6,348
Investment securities available-for-sale at fair value (amortized cost $591,668 and $688,717, respectively)	594,745	685,441
Investment securities held-to-maturity at amortized cost (fair value $480,971 and $459,693, respectively)	475,167	465,098
Loans held for sale	9,926	8,012
Loans, net of deferred loan costs and fees	4,712,249	4,544,017
Less: Allowance for loan losses	55,307	56,851
Loans, net	4,656,942	4,487,166
Other real estate owned	96,283	129,396
FDIC indemnification asset	25,529	33,610
Receivable from FDIC	4,578	7,624
Premises and equipment, net	177,568	179,855
Goodwill	134,522	131,987
Intangible assets, net	20,876	23,365
Deferred income tax asset, net	148,432	166,762
Other assets	131,890	128,456
Total Assets	6,624,006	6,617,561
Deposits:	'	'
Noninterest-bearing demand	1,000,049	923,993
Negotiable order of withdrawal accounts	1,319,667	1,321,903
Money market	953,446	961,526
Savings	528,567	530,144
Time deposits	1,359,727	1,447,497
Total deposits	5,161,456	5,185,063
Federal Home Loan Bank advances	161,185	96,278
Short-term borrowings	32,814	24,850
Long-term borrowings	139,116	138,561
Accrued expenses and other liabilities	55,877	60,021
Total liabilities	5,550,448	5,504,773
Shareholders' equity	'	'
Preferred stock $0.01 par value: 50,000 shares authorized, 0 shares issued	0	0
Additional paid in capital	1,080,735	1,082,235
Retained earnings	131,324	107,485
Accumulated other comprehensive loss	-3,212	-7,528
Treasury stock, at cost, 6,528 and 3,761 shares, respectively	-135,846	-69,962
Total shareholders' equity	1,073,558	1,112,788
Total Liabilities and Shareholders' Equity	6,624,006	6,617,561
Common Class A [Member]	'	'
Shareholders' equity	'	'
Common stock value	367	362
Total shareholders' equity	367	362
Common Class B [Member]	'	'
Shareholders' equity	'	'
Common stock value	190	196
Total shareholders' equity	$190	$196

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Amortized cost of investment securities available-for-sale	$591,668	$688,717
Fair value of investment securities held-to-maturity	$480,971	$459,693
Preferred stock, par value	$0.01	$0.01
Preferred stock, authorized shares	50,000	50,000
Preferred stock, issued shares	0	0
Treasury stock, shares	6,528	3,761
Common Class A [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	36,653	36,212
Common stock, shares outstanding	30,925	33,051
Common Class B [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	19,025	19,647
Common stock, shares outstanding	18,225	19,047

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest and dividend income	'	'	'	'
Loans, including fees	$61,667	$68,188	$124,886	$139,972
Investment securities:	'	'	'	'
Taxable interest income	4,393	4,263	8,940	7,542
Tax-exempt interest income	155	160	311	326
Dividends	15	15	30	30
Interest-bearing deposits in other banks	38	101	63	473
Other earning assets	578	462	1,159	952
Total interest and dividend income	66,846	73,189	135,389	149,295
Interest expense	'	'	'	'
Deposits	4,245	5,928	8,561	12,406
Long-term borrowings	1,719	1,894	3,423	4,394
Federal Home Loan Bank advances	41	1	102	2
Other borrowings	10	14	19	27
Total interest expense	6,015	7,837	12,105	16,829
Net Interest Income	60,831	65,352	123,284	132,466
Provision for loan losses	1,404	4,467	1,380	9,869
Net interest income after provision for loan losses	59,427	60,885	121,904	122,597
Non-Interest Income	'	'	'	'
Service charges on deposit accounts	5,672	6,335	11,108	12,677
Debit card income	3,103	2,979	5,947	5,815
Fees on mortgage loans originated and sold	1,123	1,601	1,882	2,842
Investment advisory and trust fees	910	357	2,171	640
FDIC indemnification asset expense	-2,064	-1,108	-4,229	-3,277
Investment securities (losses) gains, net	-28	205	146	205
Other income	3,171	3,137	6,231	5,513
Total non-interest income	11,887	13,506	23,256	24,415
Non-Interest Expense	'	'	'	'
Salaries and employee benefits	23,449	22,638	46,947	43,422
Stock-based compensation expense	1,020	1,364	1,748	2,941
Net occupancy and equipment expense	8,723	8,686	17,322	17,593
Computer services	3,389	3,541	6,642	6,641
Software expense	1,940	1,817	3,808	3,640
Telecommunication expense	1,628	1,631	3,236	3,385
OREO valuation expense	3,022	6,209	6,595	12,799
Gain on sales of OREO	-3,192	-2,205	-3,913	-3,392
Foreclosed asset related expense	991	2,225	2,450	3,644
Loan workout expense	1,117	2,236	2,294	4,300
Conversion and merger related expense	'	140	'	253
Professional fees	2,038	2,344	4,042	4,992
Loss on extinguishment of debt	'	'	'	308
Contingent value right expense	327	428	1,094	3,311
FDIC assessments	1,648	1,763	3,277	3,566
Other expense	5,173	6,565	10,955	13,292
Total non-interest expense	51,273	59,382	106,497	120,695
Income before income taxes	20,041	15,009	38,663	26,317
Income tax expense	7,616	5,580	14,824	11,123
Net income	$12,425	$9,429	$23,839	$15,194
Basic earnings per share	$0.25	$0.18	$0.48	$0.28
Diluted earnings per share	$0.25	$0.17	$0.47	$0.28

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$12,425	$9,429	$23,839	$15,194
Other comprehensive income before tax:	'	'	'	'
Unrealized holding gains (losses) on investment securities available-for-sale	4,286	-34,590	6,674	-33,518
Reclassification adjustment for gains realized in net income on securities available-for-sale	-26	-205	-322	-205
Reclassification adjustment for losses amortized in net income on securities held-to-maturity	367	'	705	'
Other comprehensive income (loss), before tax:	4,627	-34,795	7,057	-33,723
Tax effect	-1,797	13,415	-2,741	12,982
Other comprehensive income (loss), net of tax:	2,830	-21,380	4,316	-20,741
Comprehensive income (loss)	$15,255	($11,951)	$28,155	($5,547)

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (USD $)	Total	Common Class A [Member]	Common Class B [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
In Thousands
Beginning balance at Dec. 31, 2012	$1,155,343	$330	$228	$1,076,797	$68,641	$9,347	'
Beginning balance, shares at Dec. 31, 2012	'	33,025	22,821	'	'	'	'
Net income	15,194	'	'	'	15,194	'	'
Other comprehensive income, net of tax	-20,741	'	'	'	'	-20,741	'
Stock-based compensation	2,941	'	'	2,941	'	'	'
Fractional shares, value	-2	'	'	-2	'	'	'
Fractional shares, shares	'	'	8	'	'	'	'
Restricted stock grants, value	'	'	'	'	'	'	'
Restricted stock grants, shares	'	4	'	'	'	'	'
Purchase of treasury stock, value	-49,984	'	'	'	'	'	-49,984
Purchase of treasury stock, shares	'	-2,839	'	'	'	'	'
Conversion of shares, value	'	30	-30	'	'	'	'
Conversion of shares, shares	'	3,046	-3,046	'	'	'	'
Ending balance at Jun. 30, 2013	1,102,751	360	198	1,079,736	83,835	-11,394	-49,984
Ending balance, shares at Jun. 30, 2013	'	33,236	19,783	'	'	'	'
Beginning balance at Dec. 31, 2013	1,112,788	362	196	1,082,235	107,485	-7,528	-69,962
Beginning balance, shares at Dec. 31, 2013	'	33,051	19,047	'	'	'	'
Net income	23,839	'	'	'	23,839	'	'
Other comprehensive income, net of tax	4,316	'	'	'	'	4,316	'
Stock-based compensation	1,748	'	'	1,748	'	'	'
Full value stock awards , value	'	'	'	'	'	'	'
Full value stock awards , shares	'	11	'	'	'	'	'
Excess tax benefit from share-based payment	1,603	'	'	1,603	'	'	'
Restricted stock cancelled, value	-4,852	-1	'	-4,851	'	'	'
Restricted stock cancelled, shares	'	-192	'	'	'	'	'
Purchase of treasury stock, value	-65,884	'	'	'	'	'	-65,884
Purchase of treasury stock, shares	'	-2,567	-200	'	'	'	'
Conversion of shares, value	'	6	-6	'	'	'	'
Conversion of shares, shares	'	622	-622	'	'	'	'
Ending balance at Jun. 30, 2014	$1,073,558	$367	$190	$1,080,735	$131,324	($3,212)	($135,846)
Ending balance, shares at Jun. 30, 2014	'	30,925	18,225	'	'	'	'

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Other comprehensive income tax expense (benefit)	$2,741	$12,982
Accumulated Other Comprehensive Income (Loss) [Member]	'	'
Other comprehensive income tax expense (benefit)	$2,741	$12,982

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities	'	'
Net income	$23,839	$15,194
Adjustments to reconcile net income to net cash used in operating activities:	'	'
Accretion of purchased credit impaired loans	-64,183	-87,009
Depreciation and amortization	9,664	10,577
Provision for loan losses	1,380	9,869
Deferred income tax	13,054	8,725
Net amortization of investment securities premium/discount	4,272	6,720
Net realized gains on sales of investment securities	-146	-205
Stock-based compensation expense	1,748	2,941
Gain on sales of OREO	-3,913	-3,392
OREO valuation expenses	6,595	12,799
Other	21	-46
Net deferred loan origination fees	-3,022	-1,293
Loss on extinguishment of debt	'	308
Mortgage loans originated for sale	-68,141	-98,748
Proceeds from sales of mortgage loans originated for sale	68,109	92,164
Fees on mortgage loans originated and sold	-1,882	-2,842
FDIC indemnification asset expense	4,229	3,277
Gain on sale/disposal of premises and equipment	-44	-407
Proceeds from FDIC loss share agreements	7,327	8,358
Change in other assets	-3,364	4,959
Change in accrued expenses and other liabilities	-8,919	1,618
Net cash used in operating activities	-13,376	-16,433
Cash flows from investing activities	'	'
Purchases of investment securities available-for-sale	-108,257	-436,272
Purchases of investment securities held-to-maturity	-44,143	'
Sales of investment securities available-for-sale	150,328	225
Repayments of principal and maturities of investment securities available-for-sale	51,660	143,787
Repayments of principal and maturities of investment securities held-to-maturity	33,804	'
Net purchases of FHLB and FRB stock	-498	-978
Net (increase) decrease in loans	-121,816	180,975
Purchases of premises and equipment	-4,503	-1,631
Proceeds from sales of premises and equipment	115	6,647
Proceeds from sales of OREO	48,295	44,716
Net cash provided by (used in) investing activities	4,985	-62,531
Cash flows from financing activities	'	'
Net increase (decrease) in demand, money market and savings accounts	64,163	-111,831
Net decrease in time deposits	-87,769	-290,497
Net increase (decrease) in federal funds purchased and securities sold under agreement to repurchase	7,963	-12,545
Net decrease in short term FHLB advances	-55,000	'
Net increase (decrease) in long term FHLB advances	119,907	-90
Prepayments of long term borrowings	'	-34,500
Excess tax benefit from share-based payment	1,603	'
Purchases of treasury stock	-65,884	-49,984
Net cash used in financing activities	-15,017	-499,447
Net decrease in cash and cash equivalents	-23,408	-578,411
Cash and cash equivalents at beginning of period	164,441	734,874
Cash and cash equivalents at end of period	141,033	156,463
Supplemental disclosures of cash:	'	'
Interest paid	10,556	19,764
Cash collections of contractual interest on purchased credit impaired loans	44,245	61,570
Income taxes paid	705	1,538
Supplemental disclosures of noncash transactions:	'	'
OREO acquired through loan transfers and acquisitions	$17,864	$42,822

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	1. Basis of Presentation
	Principles of Consolidation and Nature of Operations
	Capital Bank Financial Corp. (“CBF” or the “Company”; formerly known as North American Financial Holdings, Inc.) is a bank holding company incorporated in Delaware and headquartered in Florida whose business is conducted primarily through Capital Bank, National Association (“Capital Bank, NA” or the “Bank”). CBF has a total of 162 full service banking offices located in Florida, North and South Carolina, Tennessee and Virginia.
	In September 2012, Capital Bank Corporation (“CBKN”), Green Bankshares Inc. (“GRNB”) and TIB Financial Corp. (“TIBB”), majority owned subsidiaries of the Company, merged with and into Capital Bank Financial Corp. with CBF continuing as the surviving corporation (the “Reorganization”). Upon completion of the Reorganization, the outstanding common shares held by the minority shareholders were converted into an aggregate of 3.7 million shares of CBF’s Class A common stock. The Reorganization was accounted for as a merger with CBF as the acquirer (which is the surviving entity for legal purposes).
	On October 1, 2012, the Company completed its acquisition of Southern Community Financial Corporation (“SCMF” or “Southern Community”), a publicly held bank holding company headquartered in Winston Salem, North Carolina.
	The accompanying consolidated financial statements (Unaudited) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and Regulation S-X. Accordingly, they do not include all of the information and disclosures required by US GAAP for complete financial statement presentation. In the opinion of management, all adjustments consisting of normal recurring accruals and disclosures considered necessary for a fair interim presentation have been included. All significant inter-company accounts and transactions have been eliminated in consolidation. For further information refer to the Company’s consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013.
	Out of Period Adjustments
	During the three months ended March 31, 2014, the Company recorded a correction of an error resulting from the state net operating loss that the Company was not entitled to subsequent to the 2011 Green Bankshares acquisition. The impact of this correction decreased deferred tax assets and increased goodwill by $2.5 million. After evaluating the quantitative and qualitative aspects of this error, the Company concluded that its prior period financial statements were not materially misstated.
	Recent Accounting Pronouncements
	In June 2014, the Financial Accounting Standard Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-12, “Compensation- Stock Compensation (Topic 718)—Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period”. This update provides specific guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a nonvesting condition that affects the grant-date fair value of an award. This ASU is effective for fiscal years and interim periods beginning after December 15, 2015. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In June 2014, the FASB issued ASU No. 2014-11, “Transfers and Servicing (topic 860)—Repurchase-to-Maturity Transactions, Repurchase Financing, and Disclosures”. This update changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The amendments also require two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The disclosure for certain transactions accounted for as a sale is required to be presented for interim and annual periods beginning after December 15, 2014, and the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings is required to be presented for annual periods beginning after December 15, 2014, and interim periods beginning after December 15, 2015. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”. This update clarifies the principles for recognizing revenue from contracts with customers. This ASU, which does not apply to financial instruments, is effective for interim and annual reporting periods beginning after December 15, 2016. The Company is currently evaluating this ASU to determine the impact on its consolidated financial position, results of operations and cash flows.
	In January 2014, the FASB issued ASU 2014-04, “Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” This update clarifies that when 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. This ASU is effective for fiscal years and interim periods beginning after December 15, 2014. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In January 2014, the FASB issued ASU 2014-01, “Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects (a consensus of the FASB Emerging Issues Task Force).” This ASU allows for use of the proportional amortization method for qualified affordable housing projects if certain conditions are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and the net investment performance is recognized in the income statement as a component of income tax expense. This ASU provides for a practical expedient, which allows for amortization of only expected tax credits over the period tax credits are expected to be received. This method is permitted if it produces a measurement that is substantially similar to the measurement that would result from using both tax credits and other tax benefits. This ASU is effective for fiscal years and interim periods beginning after December 15, 2014. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In July 2013, the FASB issued ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists”. This update requires an unrecognized tax benefit related to a net operating loss carryforward, a similar tax loss or a tax credit carryforward to be presented as a reduction to a deferred tax asset, unless the tax benefit is not available at the reporting date to settle any additional income taxes under the tax law of the applicable tax jurisdiction. For public entities, this ASU is effective for fiscal years and interim periods beginning after December 15, 2013, with early adoption permitted. The adoption on January 1, 2014 did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Earnings_Per_Common_Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Common Share	'
	2. Earnings Per Common Share
	Basic earnings per share are net income attributable to common shareholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share includes the dilutive effect of additional potential common shares issuable under stock options and unvested restricted shares computed using the treasury stock method. Earnings per share have been computed based on the following:
	(Shares in thousands)	Three Months Ended				Six Months Ended
		June 30, 2014		June 30, 2013		June 30, 2014		June 30, 2013
	Weighted average number of shares outstanding:
	Basic		49,090		53,108		49,800		53,865
	Dilutive effect of options outstanding		527		—		486		—
	Dilutive effect of restricted shares		644		954		806		912
	Diluted		50,261		54,062		51,092		54,777
	The dilutive effect of stock options and unvested restricted shares are the only common stock equivalents for purposes of calculating diluted earnings per common share.
	Weighted average anti-dilutive stock options and unvested restricted shares excluded from the computation of diluted earnings per share are as follows:
	(Shares in thousands)	Three Months Ended				Six Months Ended
		June 30, 2014		June 30, 2013		June 30, 2014		June 30, 2013
	Anti-dilutive stock options		14		3,000		14		2,942
	Anti-dilutive restricted shares		—		—		—		—

Investment_Securities

Investment Securities	6 Months Ended
	Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	3. Investment Securities
	Trading securities totaled $6.5 million and $6.3 million at June 30, 2014 and December 31, 2013, respectively.
	The amortized cost and estimated fair value of investment securities available-for-sale and held-to-maturity at June 30, 2014, and December 31, 2013 are presented below:
	(Dollars in thousands)	June 30, 2014
		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value
	Available-for-Sale
	Marketable equity securities	$	946	$	3	$	—		$	949
	Mortgage-backed securities—residential issued by government sponsored entities		587,142		3,965		1,047			590,060
	Industrial revenue bonds		3,580		156		—			3,736
	Total	$	591,668	$	4,124	$	1,047		$	594,745
	Held-to-Maturity
	U.S. Government agencies	$	14,567	$	2	$	4		$	14,565
	Corporate bonds		25,000		—		—			25,000
	State and political subdivisions—tax exempt		13,599		433		—			14,032
	State and political subdivisions—taxable		541		20		—			561
	Mortgage-backed securities—residential issued by government sponsored entities		421,460		5,353		—			426,813
	Total	$	475,167	$	5,808	$	4		$	480,971
	(Dollars in thousands)	31-Dec-13
		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value
	Available-for-Sale
	Asset-backed securities	$	133,647	$	363	$	785		$	133,225
	Marketable equity securities		946		—		15			931
	Mortgage-backed securities—residential issued by government sponsored entities		549,869		2,337		5,580			546,626
	Industrial revenue bonds		3,750		109		—			3,859
	Collateralized debt obligations		505		295		—			800
	Total	$	688,717	$	3,104	$	6,380		$	685,441
	Held-to-Maturity
	U.S. Government agencies	$	14,972	$	—	$	401		$	14,571
	State and political subdivisions—tax exempt		14,201		27		129			14,099
	State and political subdivisions—taxable		545		—		12			533
	Mortgage-backed securities—residential issued by government sponsored entities		435,380		328		5,218			430,490
	Total	$	465,098	$	355	$	5,760		$	459,693
	Proceeds from sales and calls of securities were $149.5 million and $150.3 million for the three and six months ended June 30, 2014, respectively. Gross gains and losses of $0.8 million and $(0.8) million, respectively, and $1.1 million and $(0.8) million, respectively, were realized on these sales and calls for the three and six months ended June 30, 2014, respectively.
	Proceeds from sales and calls of securities were $0.2 million and $1.2 million for the three and six months ended June 30, 2013, respectively. Gross gains of $0.2 million were realized on these sales and calls for the three and six months ended June 30, 2013.
	The estimated fair value of investment securities at June 30, 2014, by contractual maturity, is shown in the table that follows. Expected maturities may differ from contractual maturities because borrowers may have the right to call or repay obligations without call or prepayment penalties. Debt securities not due at a single maturity date are shown separately.
	(Dollars in thousands)	June 30, 2014
		Amortized		Estimated		Yield
		Cost		Fair Value
	Available-for-sale
	Due in one year or less	$	—	$	—		—
	Due after one year through five years		—		—		—
	Due after five years through ten years		—		—		—
	Due after ten years		3,580		3,736		2.23	%
	Mortgage-backed securities—residential issued by government sponsored entities		587,142		590,060		1.8	%
			590,722		593,796		1.8	%
	Marketable equity securities		946		949
	Total	$	591,668	$	594,745
		Amortized		Estimated		Yield
		Cost		Fair Value
	Held-to-maturity
	Due in one year or less	$	205	$	205		0.76	%
	Due after one year through five years		919		934		2.3	%
	Due after five years through ten years		34,991		35,258		4.59	%
	Due after ten years		17,592		17,761		3.04	%
	Mortgage-backed securities—residential issued by government sponsored entities		421,460		426,813		2.39	%
	Total	$	475,167	$	480,971		2.58	%
	Securities with unrealized losses not recognized in income, and the period of time they have been in an unrealized loss position, are as follows:
	(Dollars in thousands)	Less than 12 Months				12 Months or Longer					Total
		Estimated		Unrealized		Estimated			Unrealized		Estimated		Unrealized
		Fair Value		Losses		Fair Value			Losses		Fair Value		Losses
	June 30, 2014
Available-for-Sale
Mortgage-backed securities—residential issued by government sponsored entities	$	193,239	$	820	$	47,426		$	227	$	240,665	$	1,047
Total	$	193,239	$	820	$	47,426		$	227	$	240,665	$	1,047
Held-to-Maturity
U.S. Government agencies	$	7,662	$	4	$	—		$	—	$	7,662	$	4
Total	$	7,662	$	4	$	—		$	—	$	7,662	$	4
(Dollars in thousands)	Less than 12 Months				12 Months or Longer					Total
	Estimated		Unrealized		Estimated			Unrealized		Estimated		Unrealized
	Fair Value		Losses		Fair Value			Losses		Fair Value		Losses
December 31, 2013
Available-for-Sale
Asset-backed securities	$	102,835	$	785	$	—		$	—	$	102,835	$	785
Marketable equity securities		931		15		—			—		931		15
Mortgage-backed securities—residential issued by government sponsored entities		339,565		5,580		—			—		339,565		5,580
Total	$	443,331	$	6,380	$	—		$	—	$	443,331	$	6,380
Held-to-Maturity
U.S. Government agencies	$	14,571	$	401	$	—		$	—	$	14,571	$	401
State and political subdivisions—tax exempt		10,489		129		—			—		10,489		129
State and political subdivisions—taxable		533		12		—			—		533		12
Mortgage-backed securities—residential issued by government sponsored entities		342,333		5,218		—			—		342,333		5,218
Total	$	367,926	$	5,760	$	—		$	—	$	367,926	$	5,760
As of June 30, 2014, the Company’s security portfolio consisted of 132 securities, 21 of which were in an unrealized loss position. The majority of unrealized losses are related to the Company’s mortgage-backed securities.
The majority of the mortgage-backed securities at June 30, 2014 and December 31, 2013 were issued by U.S. government-sponsored entities and agencies, which the government has affirmed its commitment to support. Unrealized losses associated with these securities are attributable to changes in interest rates and illiquidity, and not credit quality, and because the Company does not have the intent to sell these mortgage-backed securities and it is more likely than not that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be other-than-temporarily impaired at June 30, 2014 or December 31, 2013.
Investment securities having carrying values of approximately $305.3 million and $313.5 million at June 30, 2014 and December 31, 2013, respectively, were pledged to secure public funds on deposit, securities sold under agreements to repurchase, and for other purposes as required by law.

Loans

Loans	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Loans	'
	4. Loans
	Major classifications of loans, including loans held for sale, are as follows:
	(Dollars in thousands)		June 30, 2014			December 31, 2013
	Non-owner occupied commercial real estate		$	793,733		$	775,733
	Other commercial construction and land			243,671			300,494
	Multifamily commercial real estate			62,793			67,688
	1-4 family residential construction and land			80,160			71,351
	Total commercial real estate			1,180,357			1,215,266
	Owner occupied commercial real estate			1,040,533			1,058,148
	Commercial and industrial loans			932,800			803,736
	Lease financing			2,346			2,676
	Total commercial			1,975,679			1,864,560
	1-4 family residential			863,897			804,322
	Home equity loans			380,767			386,366
	Other consumer loans			213,639			170,526
	Total consumer			1,458,303			1,361,214
	Other			107,836			110,989
	Total loans		$	4,722,175		$	4,552,029
	Total loans include $9.9 million and $8.0 million of 1-4 family residential loans held for sale and $6.8 million and $3.8 million of net deferred loan origination costs and fees as of June 30, 2014 and December 31, 2013, respectively.
	As of June 30, 2014, other loans include $44.8 million, $39.8 million and $1.9 million of farm land, state and political subdivision obligations and deposit customer overdrafts, respectively. As of December 31, 2013, other loans include $49.7 million, $36.2 million and $2.2 million of farm land, state and political subdivision obligations and deposit customer overdrafts, respectively.
	Covered loans represent loans acquired from the FDIC subject to loss sharing agreements. Covered loans are further broken out into (i) loans acquired with evidence of credit impairment (“Purchased Credit Impaired or PCI Loans”) and (ii) non-PCI loans. Loans originated or purchased by the Company (“New Loans”) and loans acquired through the purchase of CBKN, GRNB, SCMF and TIBB, are not subject to the loss sharing agreements and are classified as “non covered.” Additionally, certain consumer loans acquired through the acquisition of First National Bank of the South, Metro Bank and Turnberry Bank (collectively, the “Failed Banks”) from the FDIC, are specifically excluded from the loss sharing agreements.
	The Company designates loans as PCI by evaluating both qualitative and quantitative factors. At the time of acquisition, the Company accounted for the PCI loans by segregating each portfolio into loan pools with similar risk characteristics. Over the lives of the acquired PCI loans, the Company continues to estimate cash flows expected to be collected on each loan pool. The Company evaluates, at each balance sheet date, whether its estimates of the present value of the cash flows from the loan pools, determined using the effective interest rates, has decreased, such that the present value of such cash flows is less than the recorded investment of the pool, and if so, recognizes a provision for loan loss in its consolidated statement of income, unless interest rate driven. Additionally, if we have favorable changes in our estimates of cash flows expected to be collected for a loan pool such that the then-present value exceeds the recorded investment of that pool, we will first reverse any previously established allowance for loan losses for the pool. If such estimate exceeds the amount of any previously established allowance, we will accrete future interest income over the remaining life of the pool at a rate which, when used to discount the expected cash flows, results in the then-present value of such cash flows equaling the recorded investment of the pool at the time of the revised estimate.
	The table below presents a rollforward of accretable yield and income expected to be earned related to PCI loans and the amount of non-accretable difference at the end of the period. Nonaccretable difference represents estimated contractually required payments in excess of estimated cash flows expected to be collected. The accretable yield represents the excess of estimated cash flows expected to be collected over the carrying amount of the PCI loans. Other represents reductions of accretable yield due to non-credit events such as interest rate reductions on variable rate PCI loans and prepayment activity on PCI loans.
	(Dollars in thousands)		Three Months Ended						Six Months Ended
			June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Accretable Yield
	Balance at beginning of period		$	346,995		$	491,237		$	383,775		$	553,348
	Accretion of income			(31,021	)		(42,023	)		(64,183	)		(87,009	)
	Reclassification from nonaccretable difference			29,229			20,826			35,896			31,099
	Other			(15,782	)		(25,559	)		(26,067	)		(52,957	)
	Balance at end of period		$	329,421		$	444,481		$	329,421		$	444,481
	Nonaccretable Difference
	Balance at end of period		$	232,776		$	358,810		$	232,776		$	358,810
	The following table represents the periods we estimate the remaining accretable yield will accrete into income based on the Company’s most recent estimates of cash flows for PCI loans:
	(Dollars in thousands)
	Periods ending December 31,
	2014		$	54,928
	2015			87,936
	2016			61,438
	2017			41,080
	2018			27,909
	Thereafter			56,130
	Total		$	329,421
	The accretable yield is accreted into interest income over the estimated life of the PCI loans using the level yield method. The accretable yield will change due to changes in:
		•		The estimate of the remaining life of PCI loans which may change the amount of future interest income, and possibly principal, expected to be collected;
		•		The estimate of the amount of contractually required principal and interest payments over the estimated life that will not be collected (the nonaccretable difference); and
		•		Indices for PCI loans with variable rates of interest.
	For PCI loans, the impact of loan modifications is included in the evaluation of expected cash flows for subsequent decreases or increases of cash flows. For variable rate PCI loans, expected future cash flows will be recalculated as the rates adjust over the lives of the loans. At acquisition, the expected future cash flows were based on the variable rates that were in effect at that time.
	Because of the loss protection provided by the FDIC, the risks of covered loans and foreclosed real estate are significantly different from those assets not covered under the loss share agreement. Refer to Note 7 – Other Real Estate Owned for the covered balances of other real estate owned.
	As a result of overall improvement of credit loss expectations in our most recent estimates of cash flows, substantially related to the Company’s legacy Southern Community and Green Bankshares portfolios, the Company recognized $0.3 million and $0.4 million in Contingent Value Right (“CVR”) expense for the three months ended June 30, 2014 and 2013, respectively and $1.1 million and $3.3 million for the six months ended June 30, 2014 and 2013, respectively.
	Non-covered Loans
	The following is a summary of the major categories of non-covered loans outstanding as of June 30, 2014 and December 31, 2013:
	(Dollars in thousands)		Non-PCI Loans
	June 30, 2014		New			Acquired			PCI Loans			Total
												Non-covered
												Loans
	Non-owner occupied commercial real estate		$	295,756		$	68,261		$	389,203		$	753,220
	Other commercial construction and land			62,754			246			163,498			226,498
	Multifamily commercial real estate			17,179			14,061			26,720			57,960
	1-4 family residential construction and land			66,334			—			13,826			80,160
	Total commercial real estate			442,023			82,568			593,247			1,117,838
	Owner occupied commercial real estate			687,303			42,236			250,346			979,885
	Commercial and industrial loans			795,315			17,081			111,785			924,181
Lease financing			2,346			—			—			2,346
Total commercial			1,484,964			59,317			362,131			1,906,412
1-4 family residential			448,315			48,126			306,825			803,266
Home equity loans			73,749			168,109			91,814			333,672
Other consumer loans			200,024			5,383			8,167			213,574
Total consumer			722,088			221,618			406,806			1,350,512
Other			60,186			3,739			43,043			106,968
Total loans		$	2,709,261		$	367,242		$	1,405,227		$	4,481,730
(Dollars in thousands)		Non-PCI Loans
December 31, 2013		New			Acquired			PCI Loans			Total
											Non-covered
											Loans
Non-owner occupied commercial real estate		$	219,482		$	68,080		$	432,437		$	719,999
Other commercial construction and land			67,537			252			213,543			281,332
Multifamily commercial real estate			12,537			16,650			29,392			58,579
1-4 family residential construction and land			56,978			1			14,372			71,351
Total commercial real estate			356,534			84,983			689,744			1,131,261
Owner occupied commercial real estate			642,794			48,459			299,593			990,846
Commercial and industrial loans			643,044			20,519			129,961			793,524
Lease financing			2,676			—			—			2,676
Total commercial			1,288,514			68,978			429,554			1,787,046
1-4 family residential			332,585			52,078			349,060			733,723
Home equity loans			52,918			181,138			100,995			335,051
Other consumer loans			151,584			6,407			12,433			170,424
Total consumer			537,087			239,623			462,488			1,239,198
Other			57,320			3,959			47,888			109,167
Total loans		$	2,239,455		$	397,543		$	1,629,674		$	4,266,672
Covered Loans
The following is a summary of the major categories of covered loans outstanding as of June 30, 2014 and December 31, 2013:
(Dollars in thousands)		Non-PCI Loans
June 30, 2014		New			Acquired			PCI Loans			Total Covered
											Loans
Non-owner occupied commercial real estate		$	—		$	—		$	40,513		$	40,513
Other commercial construction and land			—			—			17,173			17,173
Multifamily commercial real estate			—			—			4,833			4,833
1-4 family residential construction and land			—			—			—			—
Total commercial real estate			—			—			62,519			62,519
Owner occupied commercial real estate			—			—			60,648			60,648
Commercial and industrial loans			—			195			8,424			8,619
Lease financing			—			—			—			—
Total commercial			—			195			69,072			69,267
1-4 family residential			—			1,423			59,208			60,631
Home equity loans			—			33,049			14,046			47,095
Other consumer loans			—			—			65			65
Total consumer			—			34,472			73,319			107,791
Other			—			—			868			868
Total loans		$	—		$	34,667		$	205,778		$	240,445
(Dollars in thousands)		Non-PCI Loans
December 31, 2013		New			Acquired			PCI Loans			Total Covered
											Loans
Non-owner occupied commercial real estate		$	—		$	—		$	55,734		$	55,734
Other commercial construction and land			—			—			19,162			19,162
Multifamily commercial real estate			—			—			9,109			9,109
1-4 family residential construction and land			—			—			—			—
Total commercial real estate			—			—			84,005			84,005
Owner occupied commercial real estate			—			—			67,302			67,302
Commercial and industrial loans			—			356			9,856			10,212
Lease financing			—			—			—			—
Total commercial			—			356			77,158			77,514
1-4 family residential			—			1,017			69,582			70,599
Home equity loans			—			36,114			15,201			51,315
Other consumer loans			—			—			102			102
Total consumer			—			37,131			84,885			122,016
Other			—			—			1,822			1,822
Total loans		$	—		$	37,487		$	247,870		$	285,357
The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of June 30, 2014:
(Dollars in thousands)		30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
Non-purchased credit impaired loans		Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
Non-owner occupied commercial real estate		$	—		$	—		$	—		$	—		$	1,250	$	—	$	1,250
Other commercial construction and land			10			—			—			—			314		—		324
Multifamily commercial real estate			—			—			—			—			—		—		—
1-4 family residential construction and land			—			—			—			—			—		—		—
Total commercial real estate			10			—			—			—			1,564		—		1,574
Owner occupied commercial real estate			15			—			—			—			1,648		—		1,663
Commercial and industrial loans			211			—			—			—			2,424		66		2,701
Total commercial			226			—			—			—			4,072		66		4,364
1-4 family residential			359			45			—			—			1,628		28		2,060
Home equity loans			1,188			291			—			—			2,186		1,086		4,751
Other consumer loans			2,546			—			—			—			728		—		3,274
Total consumer			4,093			336			—			—			4,542		1,114		10,085
Other			—			—			—			—			10		—		10
Total loans		$	4,329		$	336		$	—		$	—		$	10,188	$	1,180	$	16,033
(Dollars in thousands)		30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
Purchased credit impaired loans		Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
Non-owner occupied commercial real estate		$	444		$	—		$	32,945		$	4,124		$	—	$	—	$	37,513
Other commercial construction and land			162			312			36,046			9,434			—		—		45,954
Multifamily commercial real estate			—			—			2,100			208			—		—		2,308
1-4 family residential construction and land			126			—			2,219			—			—		—		2,345
Total commercial real estate			732			312			73,310			13,766			—		—		88,120
Owner occupied commercial real estate			2,574			13			26,661			2,955			—		—		32,203
Commercial and industrial loans			410			1			30,072			182			—		—		30,665
Total commercial			2,984			14			56,733			3,137			—		—		62,868
1-4 family residential			3,583			482			32,461			8,460			—		—		44,986
Home equity loans			1,599			86			5,301			4,343			—		—		11,329
Other consumer loans			255			—			203			27			—		—		485
Total consumer			5,437			568			37,965			12,830			—		—		56,800
Other			17			—			3,014			—			—		—		3,031
Total loans		$	9,170		$	894		$	171,022		$	29,733		$	—	$	—	$	210,819
The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of December 31, 2013:
(Dollars in thousands)		30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
Non-purchased credit impaired loans		Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
Non-owner occupied commercial real estate		$	—		$	—		$	—		$	—		$	90	$	—	$	90
Other commercial construction and land			—			—			—			—			563		—		563
Multifamily commercial real estate			305			—			—			—			—		—		305
1-4 family residential construction and land			—			—			—			—			1		—		1
Total commercial real estate			305			—			—			—			654		—		959
Owner occupied commercial real estate			20			—			—			—			3,394		—		3,414
Commercial and industrial loans			2			—			—			—			1,879		66		1,947
Total commercial			22			—			—			—			5,273		66		5,361
1-4 family residential			862			—			—			—			1,417		—		2,279
Home equity loans			1,046			146			—			—			2,324		1,270		4,786
Other consumer loans			1,800			—			—			—			806		—		2,606
Total consumer			3,708			146			—			—			4,547		1,270		9,671
Total loans		$	4,035		$	146		$	—		$	—		$	10,474	$	1,336	$	15,991
(Dollars in thousands)		30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
Purchased credit impaired loans		Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
Non-owner occupied commercial real estate		$	1,463		$	107		$	35,563		$	10,658		$	—	$	—	$	47,791
Other commercial construction and land			1,105			—			58,633			8,479			—		—		68,217
Multifamily commercial real estate			—			—			2,641			—			—		—		2,641
1-4 family residential construction and land			5			—			1,796			—			—		—		1,801
Total commercial real estate			2,573			107			98,633			19,137			—		—		120,450
Owner occupied commercial real estate			4,626			260			33,974			6,631			—		—		45,491
Commercial and industrial loans			249			—			29,819			1,597			—		—		31,665
Total commercial			4,875			260			63,793			8,228			—		—		77,156
1-4 family residential			6,696			227			37,646			10,824			—		—		55,393
Home equity loans			1,733			59			7,313			1,227			—		—		10,332
Other consumer loans			344			—			1,249			67			—		—		1,660
Total consumer			8,773			286			46,208			12,118			—		—		67,385
Other			433			—			4,745			954			—		—		6,132
Total loans		$	16,654		$	653		$	213,379		$	40,437		$	—	$	—	$	271,123
Pooled PCI loans are not classified as nonaccrual as they are considered to be accruing because their interest income relates to the accretable yield recognized under accounting for purchased credit-impaired loans and not to contractual interest payments.
Credit Quality Indicators
The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis is performed at origination and upon identification of a material change for all loans, on an annual basis for commercial loans exceeding $0.5 million and at least quarterly for loans not rated Pass. The Company uses the following definitions for risk ratings:
	•		Pass —These loans range from superior quality with minimal credit risk to loans requiring heightened management attention but that are still an acceptable risk and continue to perform as contracted.
	•		Special Mention —Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date.
	•		Substandard —Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected.
	•		Doubtful —Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.
The following table summarizes loans, excluding purchased credit-impaired loans by internal rating at June 30, 2014:
								Substandard
(Dollars in thousands)		Pass			Special Mention			Accruing/			Non-accrual			Doubtful		Total
								Accreting
Non-owner occupied commercial real estate		$	361,677		$	122		$	968		$	1,250		$	—	$	364,017
Other commercial construction and land			62,274			412			—			314			—		63,000
Multifamily commercial real estate			31,240			—			—			—			—		31,240
1-4 family residential construction and land			62,404			2,283			1,647			—			—		66,334
Total commercial real estate			517,595			2,817			2,615			1,564			—		524,591
Owner occupied commercial real estate			714,139			5,425			8,327			1,648			—		729,539
Commercial and industrial loans			804,329			374			5,398			2,490			—		812,591
Lease financing			2,346			—			—			—			—		2,346
Total commercial			1,520,814			5,799			13,725			4,138			—		1,544,476
1-4 family residential			496,054			154			—			1,656			—		497,864
Home equity loans			269,656			434			1,545			3,272			—		274,907
Other consumer loans			204,660			—			19			728			—		205,407
Total consumer			970,370			588			1,564			5,656			—		978,178
Other			63,653			—			262			10			—		63,925
Total loans		$	3,072,432		$	9,204		$	18,166		$	11,368		$	—	$	3,111,170
The following table summarizes loans, excluding purchased credit-impaired loans by internal rating at December 31, 2013:
								Substandard
(Dollars in thousands)		Pass			Special Mention			Accruing/			Non-accrual			Doubtful		Total
								Accreting
Non-owner occupied commercial real estate		$	285,919		$	568		$	985		$	90		$	—	$	287,562
Other commercial construction and land			67,178			48			—			563			—		67,789
Multifamily commercial real estate			28,882			—			305			—			—		29,187
1-4 family residential construction and land			53,224			1,958			1,796			1			—		56,979
Total commercial real estate			435,203			2,574			3,086			654			—		441,517
Owner occupied commercial real estate			681,571			4,093			2,195			3,394			—		691,253
Commercial and industrial loans			651,585			1,183			9,206			1,945			—		663,919
Lease financing			2,676			—			—			—			—		2,676
Total commercial			1,335,832			5,276			11,401			5,339			—		1,357,848
1-4 family residential			384,235			28			—			1,417			—		385,680
Home equity loans			263,490			37			3,050			3,593			—		270,170
Other consumer loans			157,157			—			28			806			—		157,991
Total consumer			804,882			65			3,078			5,816			—		813,841
Other			61,006			—			273			—			—		61,279
Total loans		$	2,636,923		$	7,915		$	17,838		$	11,809		$	—	$	2,674,485

Allowance_for_Loan_Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Allowance for Loan Losses	'
	5. Allowance for Loan Losses
	Activity in the allowance for loan losses for the three and six months ended June 30, 2014 and 2013 is as follows:
	(Dollars in thousands)		Three Months Ended						Six Months Ended
			June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Balance, beginning of period		$	55,606		$	57,171		$	56,851		$	57,262
	(Reversal) provision for loan losses on PCI loans			(940	)		2,517			(3,428	)		(631	)
	Provision for loan losses on non-PCI loans			2,344			1,950			4,808			10,500
	Non-PCI loans charged-off			(2,176	)		(6,069	)		(4,132	)		(13,390	)
	Recoveries of non-PCI loans previously charged-off			473			1,263			1,208			3,091
	Balance, end of periods		$	55,307		$	56,832		$	55,307		$	56,832
	The following table presents the roll forward of the allowance for loan losses for the three and six months ended June 30, 2014 by the class of loans against which the allowance is allocated:
	(Dollars in thousands)		March 31, 2014			Provision/			Net (Charge-offs)/			June 30, 2014
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	3,829		$	785		$	(127	)	$	4,487
	Other commercial construction and land			8,892			2,605			5			11,502
	Multifamily commercial real estate			403			77			—			480
	1-4 family residential construction and land			1,559			69			3			1,631
	Total commercial real estate			14,683			3,536			(119	)		18,100
	Owner occupied commercial real estate			3,530			(206	)		(7	)		3,317
	Commercial and industrial loans			8,198			519			(72	)		8,645
	Lease financing			1			—			—			1
	Total commercial			11,729			313			(79	)		11,963
	1-4 family residential			20,383			(3,169	)		(76	)		17,138
	Home equity loans			4,875			(153	)		(432	)		4,290
	Other consumer loans			3,063			1,003			(635	)		3,431
	Total consumer			28,321			(2,319	)		(1,143	)		24,859
	Other			873			(126	)		(362	)		385
	Total loans		$	55,606		$	1,404		$	(1,703	)	$	55,307
	(Dollars in thousands)		December 31, 2013			Provision/			Net(Charge-offs)/			30-Jun-14
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	4,635		$	(34	)	$	(114	)	$	4,487
	Other commercial construction and land			8,217			3,480			(195	)		11,502
	Multifamily commercial real estate			320			160			—			480
	1-4 family residential construction and land			1,558			71			2			1,631
	Total commercial real estate			14,730			3,677			(307	)		18,100
	Owner occupied commercial real estate			4,450			(1,013	)		(120	)		3,317
	Commercial and industrial loans			8,310			330			5			8,645
	Lease financing			3			(2	)		—			1
	Total commercial			12,763			(685	)		(115	)		11,963
	1-4 family residential			21,724			(4,492	)		(94	)		17,138
	Home equity loans			3,869			901			(480	)		4,290
	Other consumer loans			2,682			2,023			(1,274	)		3,431
	Total consumer			28,275			(1,568	)		(1,848	)		24,859
	Other			1,083			(44	)		(654	)		385
	Total loans		$	56,851		$	1,380		$	(2,924	)	$	55,307
	The following tables present the roll forward of the allowance for loan losses for the three and six months ended June 30, 2013 by the class of loans against which the allowance is allocated:
	(Dollars in thousands)		March 31, 2013			Provision/			Net (Charge-offs)/			June 30, 2013
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	3,449		$	871		$	9		$	4,329
	Other commercial construction and land			12,880			(646	)		76			12,310
	Multifamily commercial real estate			192			66			—			258
	1-4 family residential construction and land			1,559			245			2			1,806
	Total commercial real estate			18,080			536			87			18,703
	Owner occupied commercial real estate			4,114			360			222			4,696
	Commercial and industrial loans			10,515			1,757			(3,984	)		8,288
	Total commercial			14,629			2,117			(3,762	)		12,984
	1-4 family residential			16,800			780			(8	)		17,572
	Home equity loans			4,615			(449	)		(229	)		3,937
	Other consumer loans			2,170			712			(521	)		2,361
	Total consumer			23,585			1,043			(758	)		23,870
	Other			877			771			(373	)		1,275
	Total loans		$	57,171		$	4,467		$	(4,806	)	$	56,832
	(Dollars in thousands)		December 31, 2012			Provision/			Net(Charge-offs)/			30-Jun-13
(Reversals)						Recoveries
Non-owner occupied commercial real estate		$	3,764		$	592		$	(27	)	$	4,329
Other commercial construction and land			12,711			(919	)		518			12,310
Multifamily commercial real estate			348			(131	)		41			258
1-4 family residential construction and land			1,716			67			23			1,806
Total commercial real estate			18,539			(391	)		555			18,703
Owner occupied commercial real estate			4,055			375			266			4,696
Commercial and industrial loans			7,490			9,149			(8,351	)		8,288
Total commercial			11,545			9,524			(8,085	)		12,984
1-4 family residential			15,740			1,812			20			17,572
Home equity loans			8,670			(3,821	)		(912	)		3,937
Other consumer loans			2,082			1,363			(1,084	)		2,361
Total consumer			26,492			(646	)		(1,976	)		23,870
Other			686			1,382			(793	)		1,275
Total loans		$	57,262		$	9,869		$	(10,299	)	$	56,832
The following tables present the roll forward of the allowance for loan losses for PCI and Non-PCI loans for the three and six months ended June 30, 2014 and 2013, by the class of loans against which the allowance is allocated:
		Three Months Ended
(Dollars in thousands)		June 30, 2014									June 30, 2013
		Non-PCI			PCI			Total			Non-PCI			PCI			Total
Allowance for loan losses at the beginning of the period		$	20,194		$	35,412		$	55,606		$	20,496		$	36,675		$	57,171
Charge-offs:
Non-owner occupied commercial real estate			204			—			204			11			—			11
Other commercial construction and land			(1	)		—			(1	)		28			—			28
1-4 family residential construction and land			(1	)		—			(1	)		—			—			—
Total commercial real estate			202			—			202			39			—			39
Owner occupied commercial real estate			8			—			8			—			—			—
Commercial and industrial loans			106			—			106			4,107			—			4,107
Lease financing			—			—			—			—			—			—
Total commercial			114			—			114			4,107			—			4,107
1-4 family residential			80			—			80			28			—			28
Home equity loans			465			—			465			587			—			587
Other consumer loans			781			—			781			680			—			680
Total consumer			1,326			—			1,326			1,295			—			1,295
Other			534			—			534			628			—			628
Total charge-offs			2,176			—			2,176			6,069			—			6,069
Recoveries:
Non-owner occupied commercial real estate			77			—			77			20			—			20
Other commercial construction and land			4			—			4			104			—			104
1-4 family residential construction and land			2			—			2			2			—			2
Total commercial real estate			83			—			83			126			—			126
Owner occupied commercial real estate			1			—			1			222			—			222
Commercial and industrial loans			34			—			34			123			—			123
Total commercial			35			—			35			345			—			345
1-4 family residential			4			—			4			20			—			20
Home equity loans			33			—			33			358			—			358
Other consumer loans			146			—			146			159			—			159
Total consumer			183			—			183			537			—			537
Other			172			—			172			255			—			255
Total recoveries			473			—			473			1,263			—			1,263
Net charge-offs (recoveries)			1,703			—			1,703			4,806			—			4,806
Provision for loan losses:
Non-owner occupied commercial real estate			159			626			785			(222	)		1,093			871
Other commercial construction and land			(1	)		2,606			2,605			(346	)		(300	)		(646	)
Multifamily commercial real estate			(13	)		90			77			(6	)		72			66
1-4 family residential construction and land			(36	)		105			69			6			239			245
Total commercial real estate			109			3,427			3,536			(568	)		1,104			536
Owner occupied commercial real estate			(183	)		(23	)		(206	)		(277	)		637			360
Commercial and industrial loans			347			172			519			1,057			700			1,757
Lease financing			(1	)		1			—			—			—			—
Total commercial			163			150			313			780			1,337			2,117
1-4 family residential			303			(3,472	)		(3,169	)		115			665			780
Home equity loans			473			(626	)		(153	)		359			(808	)		(449	)
Other consumer loans			899			104			1,003			750			(38	)		712
Total consumer			1,675			(3,994	)		(2,319	)		1,224			(181	)		1,043
Other			397			(523	)		(126	)		514			257			771
Total provision for loan losses			2,344			(940	)		1,404			1,950			2,517			4,467
Allowance for loan losses at the end of the period		$	20,835		$	34,472		$	55,307		$	17,640		$	39,192		$	56,832
(Dollars in thousands)		Six Months Ended
		June 30, 2014									June 30, 2013
		Non-PCI			PCI			Total			Non-PCI			PCI			Total
Allowance for loan losses at the beginning of the period		$	18,951		$	37,900		$	56,851		$	17,439		$	39,823		$	57,262
Charge-offs:
Non-owner occupied commercial real estate			204			—			204			92			—			92
Other commercial construction and land			207			—			207			102			—			102
1-4 family residential construction and land			2			—			2			—			—			—
Total commercial real estate			413			—			413			194			—			194
Owner occupied commercial real estate			144			—			144			—			—			—
Commercial and industrial loans			161			—			161			9,011			—			9,011
Total commercial			305			—			305			9,011			—			9,011
1-4 family residential			101			—			101			28			—			28
Home equity loans			594			—			594			1,367			—			1,367
Other consumer loans			1,588			—			1,588			1,381			—			1,381
Total consumer			2,283			—			2,283			2,776			—			2,776
Other			1,131			—			1,131			1,409			—			1,409
Total charge-offs			4,132			—			4,132			13,390			—			13,390
Recoveries:
Non-owner occupied commercial real estate			90			—			90			65			—			65
Other commercial construction and land			12			—			12			620			—			620
Multifamily commercial real estate			—			—			—			41			—			41
1-4 family residential construction and land			4			—			4			23			—			23
Total commercial real estate			106			—			106			749			—			749
Owner occupied commercial real estate			24			—			24			266			—			266
Commercial and industrial loans			166			—			166			660			—			660
Total commercial			190			—			190			926			—			926
1-4 family residential			7			—			7			48			—			48
Home equity loans			114			—			114			455			—			455
Other consumer loans			314			—			314			297			—			297
Total consumer			435			—			435			800			—			800
Other			477			—			477			616			—			616
Total recoveries			1,208			—			1,208			3,091			—			3,091
Net charge-offs (recoveries)			2,924			—			2,924			10,299			—			10,299
Provision for loan losses:
Non-owner occupied commercial real estate			181			(215	)		(34	)		(199	)		791			592
Other commercial construction and land			499			2,981			3,480			(527	)		(392	)		(919	)
Multifamily commercial real estate			(24	)		184			160			(47	)		(84	)		(131	)
1-4 family residential construction and land			(70	)		141			71			107			(40	)		67
Total commercial real estate			586			3,091			3,677			(666	)		275			(391	)
Owner occupied commercial real estate			39			(1,052	)		(1,013	)		(555	)		930			375
Commercial and industrial loans			382			(52	)		330			8,179			970			9,149
Lease financing			(2	)		—			(2	)		—			—			—
Total commercial			419			(1,104	)		(685	)		7,624			1,900			9,524
1-4 family residential			557			(5,049	)		(4,492	)		145			1,667			1,812
Home equity loans			614			287			901			1,020			(4,841	)		(3,821	)
Other consumer loans			2,087			(64	)		2,023			1,523			(160	)		1,363
Total consumer			3,258			(4,826	)		(1,568	)		2,688			(3,334	)		(646	)
Other			545			(589	)		(44	)		854			528			1,382
Total provision for loan losses			4,808			(3,428	)		1,380			10,500			(631	)		9,869
Allowance for loan losses at the end of the period		$	20,835		$	34,472		$	55,307		$	17,640		$	39,192		$	56,832
The following table presents the balance in the allowance for loan losses and the recorded investment in loans by class of loans and by impairment evaluation method as of June 30, 2014:
(Dollars in thousands)		Allowance for Loan Losses									Loans
		Individually			Collectively			Purchased			Individually			Collectively			Purchased
		Evaluated			Evaluated			Credit-			Evaluated			Evaluated			Credit-
		for			for			Impaired			for			for			Impaired
		Impairment			Impairment						Impairment			Impairment (1)
Non-owner occupied commercial real estate		$	—		$	1,682		$	2,805		$	632		$	363,385		$	429,716
Other commercial construction and land			—			1,505			9,997			—			63,000			180,671
Multifamily commercial real estate			—			92			388			—			31,240			31,553
1-4 family residential construction and land			—			997			634			—			66,334			13,826
Total commercial real estate			—			4,276			13,824			632			523,959			655,766
Owner occupied commercial real estate			—			2,531			786			4,904			724,635			310,994
Commercial and industrial loans			1			7,263			1,381			6,277			806,314			120,209
Lease financing			—			1			—			—			2,346			—
Total commercial			1			9,795			2,167			11,181			1,533,295			431,203
1-4 family residential			3			2,739			14,396			790			487,148			366,033
Home equity loans			17			516			3,757			240			274,667			105,860
Other consumer loans			9			3,121			301			157			205,250			8,232
Total consumer			29			6,376			18,454			1,187			967,065			480,125
Other			—			358			27			—			63,925			43,911
Total loans		$	30		$	20,805		$	34,472		$	13,000		$	3,088,244		$	1,611,005
-1	Loans collectively evaluated for impairment include $401.9 million of acquired loans which are presented net of unamortized purchase discounts of $14.0 million.
The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and by impairment evaluation method as of December 31, 2013:
(Dollars in thousands)		Allowance for Loan Losses									Loans
		Individually			Collectively			Purchased			Individually			Collectively			Purchased
		Evaluated			Evaluated			Credit-			Evaluated			Evaluated			Credit-
		for			for			Impaired			for			for			Impaired
		Impairment			Impairment						Impairment			Impairment (1)
Non-owner occupied commercial real estate		$	—		$	1,615		$	3,020		$	877		$	286,685		$	488,171
Other commercial construction and land			—			1,201			7,016			—			67,789			232,705
Multifamily commercial real estate			—			116			204			—			29,187			38,501
1-4 family residential construction and land			—			1,065			493			—			56,979			14,372
Total commercial real estate			—			3,997			10,733			877			440,640			773,749
Owner occupied commercial real estate			—			2,611			1,839			4,844			686,409			366,895
Commercial and industrial loans			507			6,370			1,433			9,623			654,296			139,817
Lease financing			—			3			—			—			2,676			—
Total commercial			507			8,984			3,272			14,467			1,343,381			506,712
1-4 family residential			—			2,279			19,445			—			377,668			418,642
Home equity loans			—			398			3,471			—			270,170			116,196
Other consumer loans			5			2,313			364			207			157,784			12,535
Total consumer			5			4,990			23,280			207			805,622			547,373
Other			—			468			615			273			61,006			49,710
Total loans		$	512		$	18,439		$	37,900		$	15,824		$	2,650,649		$	1,877,544
-1	Loans collectively evaluated for impairment include $435.0 million of acquired loans which are presented net of unamortized purchase discounts of $14.7 million.
Troubled Debt Restructurings
If a borrower is experiencing financial difficulty, the Bank may consider, in certain circumstances, modifying the terms of their loan to maximize collection of amounts due. A troubled debt restructuring (“TDR”) typically involves either a reduction of the stated interest rate of the loan, an extension of the loan’s maturity date(s) with a stated rate lower than the current market rate for a new loan with similar risk, or in limited circumstances, a reduction of the principal balance of the loan or the loan’s accrued interest. Upon modification of a loan, the Bank measures the related impairment as the excess of the recorded investment in the loan over the discounted expected future cash flows. The present value of expected future cash flows is discounted at the loan’s effective interest rate. If the impairment analysis results in a loss, an allowance for loan losses is established for the loan. During the three and six months ended June 30, 2014, loans modified in TDRs were nominal. Because of the immateriality of the amount and the nature of the modifications, the modifications did not have a material impact on the Company’s consolidated financial statements or on the determination of the allowance for loan losses at June 30, 2014. The Company had loans modified in TDRs with recorded investments of $3.1 million and $3.4 million for the three and six months ended June 30, 2014, respectively. The Company had loans modified in TDRs with recorded investments of $0.2 million for the six months ended June 30, 2013.

FDIC_Indemnification_Asset

FDIC Indemnification Asset	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
FDIC Indemnification Asset	'
	6. FDIC Indemnification Asset
	The Company has recorded an indemnification asset related to loss sharing agreements entered into with the FDIC wherein the FDIC will reimburse the Company for certain amounts related to certain acquired loans and other real estate owned should the Company experience a loss. Under the loss sharing arrangements, the FDIC has agreed to absorb 80% of all future credit losses and workout expenses on these assets which occur prior to the expiration of the loss sharing agreements. These agreements resulted from the purchase of the Failed Banks.
	The loss sharing agreements consist of three (one for each Failed Bank) single-family shared-loss agreements and three (one for each Failed Bank) commercial and other loans shared-loss agreements. The single family shared-loss agreements provide for FDIC loss sharing and our reimbursement for recoveries to the FDIC for ten years from July 16, 2010 for single-family residential loans. The commercial shared-loss agreements provide for FDIC loss sharing for five years from July 16, 2010 and our reimbursement for recoveries to the FDIC for eight years from July 16, 2010 for all other covered assets.
	The following is a summary of the activity in the FDIC indemnification asset:
	(Dollars in thousands)
	Balance, December 31, 2013	$	33,610
	Indemnification asset income		423
	Amortization of indemnification asset		(4,652	)
	Cash received on reimbursable losses		(3,852	)
	Balance, June 30, 2014	$	25,529
	Balance, December 31, 2012	$	49,417
	Indemnification asset income		492
	Amortization of indemnification asset		(3,769	)
	Cash received on reimbursable losses		(7,410	)
	Balance, June 30, 2013	$	38,730

Other_Real_Estate_Owned

Other Real Estate Owned	6 Months Ended
	Jun. 30, 2014
Banking And Thrift [Abstract]	'
Other Real Estate Owned	'
	7. Other Real Estate Owned
	The activity within Other Real Estate Owned (“OREO”) for the three and six months ended June 30, 2014 and 2013 is presented in the table below. Ending balances for OREO covered by loss sharing agreements with the FDIC as of June 30, 2014 and 2013 were $17.0 million and $31.7 million, respectively. Non-covered OREO ending balances as of June 30, 2014 and 2013 were $79.3 million and $111.1 million respectively.
	For the three and six months ended June 30, 2014, proceeds on sales of OREO were $32.3 million and $48.3 million, respectively. Net gains on sales were $3.2 million and $3.9 million, respectively. For the three and six months ended June 30, 2013, proceeds on sales of OREO were $28.9 million and $44.7 million, respectively. Net gains on sales were $2.2 million and $3.4 million, respectively.
	(Dollars in thousands)	Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Balance, beginning of period	$	120,270		$	151,613		$	129,396		$	154,093
	Real estate acquired from borrowers		8,159			24,131			17,864			42,822
	Valuation allowance		(3,022	)		(6,209	)		(6,595	)		(12,799	)
	Properties sold and other		(29,124	)		(26,743	)		(44,382	)		(41,324	)
	Balance, end of period	$	96,283		$	142,792		$	96,283		$	142,792

Federal_Home_Loan_Bank_Advance

Federal Home Loan Bank Advances and Short-Term Borrowings	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Federal Home Loan Bank Advances and Short-Term Borrowings	'
	8. Federal Home Loan Bank Advances and Short-Term Borrowings
	Short-term borrowings include federal funds purchased, securities sold under agreements to repurchase, and advances from the Federal Home Loan Bank (“FHLB”).
	The Bank has securities sold under agreements to repurchase with customers. These agreements are collateralized by investment securities of the United States Government or its agencies which are chosen by the Bank. The amounts outstanding at June 30, 2014 and December 31, 2013 were $32.8 million and $24.9 million, respectively.
	The Bank invests in FHLB stock for the purpose of establishing credit lines with the FHLB. The credit availability to the Bank is based on a percentage of the Bank’s total assets as reported on the most recent quarterly financial information submitted to the regulators subject to the pledging of sufficient collateral. The Bank’s collateral with the FHLB consists of a blanket floating lien pledge of the Bank’s residential 1-4 family mortgage, multifamily, home equity line of credit and commercial real estate secured loans. The amounts of eligible collateral at June 30, 2014 and December 31, 2013, provided for incremental borrowing availability of up to $70.8 million and $95.4 million, respectively.
	At June 30, 2014 and December 31, 2013 the bank had $25.6 million in letters of credit issued by the FHLB, of which $25.2 million are used as collateral in lieu of pledging securities to the State of Florida.
	The advances as of June 30, 2014 and December 31, 2013 consisted of the following:
	(Dollars in thousands)
	Contractual		Maturity Date	Fixed
	Outstanding			Contractual
	Amount			Rate
	June 30, 2014
	$	50,000	July 23, 2014	0.19%
		70,000	30-Jul-14	0.20%
		40,000	May 19, 2015	0.36%
		651	November 6, 2017	0.50%
		534	10-Feb-26	0.00%
	$	161,185
	(Dollars in thousands)
	Contractual		Maturity Date	Fixed
	Outstanding			Contractual
	Amount			Rate
	December 31, 2013
	$	95,000	16-May-14	0.36%
		724	6-Nov-17	0.50%
		554	10-Feb-26	0.00%
	$	96,278

Long_Term_Borrowings

Long Term Borrowings	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Long Term Borrowings	'
	9. Long Term Borrowings
	Structured repurchase agreements
	The repurchase agreements as of June 30, 2014 and December 31, 2013 consisted of the following:
	(Dollars in thousands)
	June 30, 2014				December 31, 2013				Contractual Amount				Maturity Date	Contractual
	Carrying Amount				Carrying Amount									Rate
	$	10,683			$	10,823			$	10,000			November 6, 2016	4.75%
		10,709				10,833				10,000			March 30, 2017	4.50%
		10,458				10,521				10,000			December 18, 2017	3.79%
		10,433				10,492				10,000			December 18, 2017	3.72%
		10,710				10,780				10,000			March 22, 2019	3.56%
	$	52,993			$	53,449			$	50,000
	These repurchase agreements have a weighted-average rate of 4.06% at June 30, 2014 and December 31, 2013 and are collateralized by $66.0 million and $62.1 million, respectively, of mortgage-backed securities.
	Subordinated Debentures
	Through its acquisitions of CBKN, GRNB, SCMF and TIBB, the Company assumed thirteen separate pooled offerings of trust preferred securities. The Company is not considered the primary beneficiary of the trusts (variable interest entities), therefore the trusts are not consolidated in the Company’s consolidated financial statements, but rather the subordinated debentures are presented as liabilities. The trusts consist of wholly-owned statutory trust subsidiaries for the purpose of issuing the trust preferred securities. The trusts used the proceeds from the issuance of trust preferred securities to acquire junior subordinated deferrable interest debentures of the Company. The trust preferred securities essentially mirror the debt securities, carrying a cumulative preferred dividend equal to the interest rate on the debt securities. The debt securities and the trust preferred securities each have 30-year lives. The trust preferred securities and the debt securities are callable by the Company or the trust, at their respective option after a period of time, and at varying premiums and sooner in specific events, subject to prior approval by the Federal Reserve Board (“FRB”), if then required. Deferral of interest payments on the trust preferred securities is allowed for up to 60 months without being considered an event of default. On March 18, 2013, the Company called and redeemed $34.5 million of trust preferred securities issued by SCMF, which had a fixed interest rate of 7.95%. The prepayment resulted in a $0.3 million loss on extinguishment of debt.
	(Dollars in thousands)
	Date of Offering		Original				Carrying Amount				Carrying Amount			Interest Rate as of June 30, 2014		Maturity Date
			Face				June 30, 2014				December 31, 2013
			Amount
	July 31, 2001		$	5,000			$	3,875			$	3,851			3.80% (3 Month LIBOR+358 bps)	31-Jul-31
	July 31, 2001			4,000				2,667				2,636			3.80% (3 Month LIBOR+358 bps)	31-Jul-31
	June 26, 2003			10,000				5,968				5,921			3.33% (3 Month LIBOR+310 bps)	26-Jun-33
	September 25, 2003			10,000				6,441				6,368			3.08% (3 Month LIBOR+285 bps)	September 25, 2033
	December 30, 2003			10,000				5,752				5,704			3.08% (3 Month LIBOR+285 bps)	30-Dec-33
	June 28, 2005			3,000				1,570				1,545			1.91% (3 Month LIBOR+168 bps)	28-Jun-35
	December 22, 2005			10,000				4,548				4,491			1.63% (3 Month LIBOR+140 bps)	15-Mar-36
	December 28, 2005			13,000				6,562				6,458			1.77% (3 Month LIBOR+154 bps)	15-Mar-36
	June 23, 2006			20,000				11,346				11,206			1.78% (3 Month LIBOR+155 bps)	7-Jul-36
	May 16, 2007			56,000				28,474				28,050			1.88% (3 Month LIBOR+165 bps)	15-Jun-37
	June 15, 2007			10,000				5,375				5,327			1.66% (3 Month LIBOR+143 bps)	6-Sep-37
			$	151,000			$	82,578			$	81,557
	Other Subordinated Debentures
	Through the acquisition of CBKN, the Company assumed $3.4 million in aggregate principal amount of subordinated promissory notes with a fixed interest rate of 10.0% due March 18, 2020. The notes had a carrying value of $3.5 million and $3.6 million as of June 30, 2014, and December 31, 2013, respectively. The Company may prepay the notes at any time after March 18, 2015 subject to regulatory approval and compliance with applicable law. The Company’s obligation to repay the notes is subordinate to all indebtedness owed by the Company to its current and future secured creditors and general creditors and certain other financial obligations of the Company.
	At June 30, 2014, the maturities of long-term borrowings were as follows:
	(Dollars in thousands)		Fixed Rate				Floating Rate				Total
	Due in 2014 through 2015		$	—			$	—			$	—
	Due in 2016			10,683				—				10,683
	Due in 2017			31,600				—				31,600
	Due in 2018			—				—				—
	Thereafter			14,255				82,578				96,833
	Total		$	56,538			$	82,578			$	139,116

Shareholders_Equity_and_Minimu

Shareholders' Equity and Minimum Regulatory Capital Requirements	6 Months Ended
	Jun. 30, 2014
Banking And Thrift [Abstract]	'
Shareholders' Equity and Minimum Regulatory Capital Requirements	'
	10. Shareholders’ Equity and Minimum Regulatory Capital Requirements
	The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements results in certain discretionary and required actions by regulators that could have an effect on the Company’s operations. The regulations require the Company and the Bank to meet specific capital adequacy guidelines that involve quantitative measures of assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
	To be considered well capitalized or adequately capitalized as defined under the regulatory framework for prompt corrective action, the Bank must maintain minimum Tier 1 leverage, Tier 1 risk-based and Total Risk-based ratios. At June 30, 2014 and December 31, 2013 the Bank maintained capital ratios exceeding the requirement to be considered well capitalized. These minimum ratios along with the actual ratios for the Company and the Bank are presented in the following tables:
	(Dollars in thousands)	Well Capitalized		Adequately Capitalized		Actual
		Requirement		Requirement
	June 30, 2014	Amount	Ratio	Amount	Ratio	Amount		Ratio
	Tier 1 Capital
	(to Average Assets)
	CBF Consolidated	N/A	N/A	³ $251,319	³ 4.0%	$	917,990	14.60%
	Capital Bank, N.A.	³ $313,810	³ 5.0%	³ $251,048	³ 4.0%	$	887,652	14.10%
	Tier 1 Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $197,728	³ 4.0%	$	917,990	18.60%
	Capital Bank, N.A.	³ $296,245	³ 6.0%	³ $197,497	³ 4.0%	$	887,652	18.00%
	Total Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $395,456	³ 8.0%	$	977,260	19.80%
	Capital Bank, N.A.	³ $493,742	³ 10.0%	³ $394,994	³ 8.0%	$	946,771	19.20%
	(Dollars in thousands)	Well Capitalized		Adequately Capitalized		Actual
		Requirement		Requirement
	December 31, 2013	Amount	Ratio	Amount	Ratio	Amount		Ratio
	Tier 1 Capital
	(to Average Assets)
	CBF Consolidated	N/A	N/A	³ $254,126	³ 4.0%	$	949,619	14.90%
	Capital Bank, N.A.	³ $317,562	³ 5.0%	³ $254,050	³ 4.0%	$	849,520	13.40%
	Tier 1 Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $192,428	³ 4.0%	$	949,619	19.70%
	Capital Bank, N.A.	³ $288,410	³ 6.0%	³ $192,273	³ 4.0%	$	849,520	17.70%
	Total Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $384,856	³ 8.0%	$	1,010,422	21.00%
	Capital Bank, N.A.	³ $480,683	³ 10.0%	³ $384,546	³ 8.0%	$	910,162	18.90%
	In August 2010, Capital Bank, NA entered into an Operating Agreement with the Office of the Comptroller of the Currency (the “OCC Operating Agreement”). At present, the OCC Operating Agreement requires Capital Bank, NA to maintain total capital equal to at least 12% of risk-weighted assets, Tier 1 capital equal to at least 11% of risk-weighted assets and a minimum leverage ratio of 10% (Tier 1 Capital ratio).
	As of June 30, 2014 and December 31, 2013, the Company and the Bank met all capital requirements to which they were subject. Tier 1 Capital for the Company includes trust preferred securities to the extent allowable.
	The OCC Operating Agreement prohibited Capital Bank, NA from paying a dividend to the Company for three years following the acquisition of the Failed Banks and, now that the three-year period elapsed, imposes other restrictions on Capital Bank’s ability to pay dividends, including requiring prior approval from the OCC before any distribution is made. Dividends that may be paid by a national bank are limited to that bank’s retained net profits for the preceding two years plus retained net profits up to the date of any dividend declaration in the current calendar year. The OCC has approved dividends totaling $161.0 million to the Company by its subsidiary Capital Bank N.A.
	Share Repurchases
	On February 5, 2013, the Board of Directors authorized the repurchase of up to $50.0 million of the Company’s common stock. The Company has repurchased $50.0 million, or 2,839,441 common shares at an average price of $17.60 per share, completing the aforementioned stock repurchase authorization.
	On September 16, 2013, the Board of Directors authorized the repurchase of up to an additional $100.0 million of the Company’s common stock. During the three and six months ended June 30, 2014, the Company repurchased $43.2 million, or 1,798,133 common shares at an average price of $24.04 per share and $65.9 million, or 2,766,998 common shares at average price of $23.80 per share, respectively. As of June 30, 2014, the Company has repurchased a total of $85.9 million, or 3,668,874 common shares at an average price of $23.28 per share with $14.2 million of remaining availability for future share repurchases under this plan.
	On July 23, 2014, the Board of Directors authorized the repurchase of up to an additional $50.0 million of the Company’s common stock. Stock repurchases may be made from time to time, on the open market or in privately negotiated transactions. The approved stock repurchase program does not obligate the Company to repurchase any particular amount of shares, and the program may be extended, modified, suspended, or discontinued at any time.
	The Company accounts for treasury stock using the cost method as a reduction of shareholders’ equity in the accompanying consolidated balance sheets and statement of changes in shareholders’ equity.

StockBased_Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	11. Stock-Based Compensation
	As of June 30, 2014, the Company had two compensation plans, the 2010 Equity Incentive Plan (the “2010 Plan”) and the 2013 Omnibus Compensation Plan (the “2013 Plan”) under which shares of its common stock are issuable in the form of stock options, stock appreciation rights, restricted stock, restricted stock units, stock awards, stock bonus awards and other incentive awards. The 2010 Plan was replaced by the 2013 Plan and no further awards may be made pursuant to the 2010 Plan.
	The 2013 Plan was effective May 22, 2013 and expires on May 22, 2023, the tenth anniversary of the effective date. The maximum number of shares of common stock of the Company that may be optioned or awarded under this plan is 2,639,000 shares. Awards under this plan may be made to any person selected by the Compensation Committee.
	The following table summarizes the components and classification of stock-based compensation expense for the three and six months ended June 30, 2014 and 2013.
	(Dollars in thousands)	Three Months Ended					Six Months Ended
		June 30, 2014			June 30, 2013		June 30, 2014			June 30, 2013
	Stock options	$	171		$	96	$	366		$	179
	Restricted stock		849			1,268		1,382			2,762
	Total stock-based compensation expense	$	1,020		$	1,364	$	1,748		$	2,941
	The tax benefit related to stock-based compensation expense arising from restricted stock awards and non-qualified stock options was $0.4 million and $0.7 million for the three months ended June 30, 2014 and 2013, respectively, and $0.5 million and $1.1 million for the six months ended June 30, 2014 and 2013, respectively.
	Stock Options
	Under the 2010 and 2013 Plan, the exercise price for common stock must equal at least 100% of the fair market value of the stock on the day an option is granted. The exercise price under an incentive stock option granted to a person owning stock representing more than 10% of the common stock must equal at least 110% of the fair market value at the date of grant, and such option is not exercisable after five years from the date the incentive stock option was granted. The Board of Directors may, at its discretion, provide that an option not be exercised in whole or in part for any period or periods of time as specified in the option agreements. No option may be exercised after the expiration of ten years from the date it is granted. No stock options were granted under these plans during the three and six months ended June 30, 2014.
	During the three and six months ended June 30, 2013, 264,000 options were granted to employees. These options vest over service periods of 2 years. The fair value of each option is estimated as of the date of the grant using the Black-Scholes Option Pricing Model. This model requires the input of subjective assumptions that will usually have a significant impact on the fair value estimate. The dividend yield assumption is consistent with management expectations of dividend distributions based upon the Company’s business plan at the date of grant. The risk-free interest rate was developed using the U.S. Treasury yield curve for a period equal to the expected life of the options on the grant date. The expected option life for the current period grants was estimated using the vesting period, the term of the option and estimates of future exercise behavior patterns. The volatility was estimated using a peer group assessment for periods approximating the expected option life. Appropriate weight is attributed to financial theory, according to which the volatility of an institution’s equity should be related to the volatility of its assets and the entity’s financial leverage.
	The following table summarizes the weighted average assumptions used to compute the grant-date fair value of options granted during the three and six months ended June 30, 2013:
		Three and
		Six Months Ended
		June 30, 2013
	Dividend yield	0.00%
	Risk-free interest rate	1.02%
	Expected option life	5.75 years
	Volatility	37.00%
	Weighted average grant-date fair value of options granted	$6.52
	ASC 718 requires the recognition of stock-based compensation for the number of awards that are ultimately expected to vest. During the three and six months ended June 30, 2014 and 2013, stock based compensation expense was recorded based upon assumptions that the Company would experience no forfeitures. This assumption of forfeitures will be reassessed in subsequent periods based on historical forfeiture rates and may change based on new facts and circumstances. Any changes in assumptions will be accounted for prospectively in the period of change.
	A summary of the stock option activity for the six months ended June 30, 2014 and 2013 is as follows:
		Six Months Ended
		June 30, 2014					June 30, 2013
	(Shares in thousands)	Shares			Weighted		Shares			Weighted
					Average					Average
					Exercise					Exercise
					Price Per					Price Per
					Share					Share
	Balance, January 1,		3,123		$	20.5		2,890		$	21.39
	Granted		—			—		264			18
	Excercised		—			—		—			—
	Expired or Forfeited		(9	)		59.6		(8	)		182.1
	Balance, June 30,		3,114		$	20.39		3,146		$	20.7
	The weighted average remaining term for outstanding stock options was approximately 6.1 years at June 30, 2014. The aggregate intrinsic value at June 30, 2014 was $11.7 million and $11.0 million for stock options outstanding and exercisable, respectively. The aggregate intrinsic value at June 30, 2013 was $0 for stock options outstanding and exercisable. The intrinsic value for stock options is calculated as the difference between the exercise price of the underlying awards and the market price of the Company’s common stock as of the reporting date.
	Options outstanding at June 30, 2014 were as follows:
	(Shares in thousands)	Outstanding Options								Excercisable Options
	Range of Exercise Prices	Shares			Weighted		Weighted			Shares		Weighted
					Average		Average					Average
					Remaining		Exercise Price					Exercise Price
					Contractual		Per					Per
					Life		Share					Share
	$18.00		236			8.89 years	$	18			118	$	18
	$20.00		2,864			5.93 years		20			2,864		20
	$28.44 - $2,026.00		14			3.27 years		138.87			14		138.87
	$18.00 - $2,026.00		3,114			6.15 years	$	20.39			2,996	$	20.39
	Options outstanding at June 30, 2013 were as follows:
	(Shares in thousands)	Outstanding Options								Excercisable Options
	Range of Exercise Prices	Shares			Weighted		Weighted			Shares		Weighted
					Average		Average					Average
					Remaining		Exercise Price					Exercise Price
					Contractual		Per					Per
					Life		Share					Share
	$18.00		264			9.89 years	$	18			—	$	—
	$20.00		2,864			6.93 years		20			2,864		20
	$28.44 - $2,026.00		18			3.65 years		171.04			17		176.99
	$18.00 - $2,026.00		3,146			7.16 years	$	20.7			2,881	$	20.94
	Restricted Stock and Full Value Stock Awards
	Restricted stock provides the grantee with voting, dividend and anti-dilution rights equivalent to common shareholders, but is restricted from transfer until vested, at which time all restrictions are removed. The terms of the restricted stock awards granted to employees provide for vesting upon the achievement of stock price goals as follows: (1) one-third at $25.00 per share; (2) one-third at $28.00 per share; and (3) one-third at $32.00 per share. Achievement of stock price goals is generally defined as the average closing price of the shares for any consecutive 30-day trading period exceeding the applicable price target. The value of the restricted stock is being amortized on a straight-line basis over the implied service periods. On May 21, 2013, 4,000 restricted stock awards were granted under the 2010 Plan. The fair value of the restricted stock was estimated to be equal to the closing stock price on the grant date.
	During the three months ended June 30, 2014, 405,133 restricted stock awards vested upon achievement of the $25.00 stock price goal. The Company recognized $1.6 million in excess tax benefits related to the vesting and exercise of such awards.
	The following table summarizes unvested restricted stock activity for the six months ended June 30, 2014 and 2013:
	Six Months Ended
	June 30, 2014					June 30, 2013
(Shares in thousands)	Shares			Weighted		Shares			Weighted
				Average					Average
				Grant-Date					Grant-Date
				Fair Value					Fair Value
				Per Share					Per Share
Balance, January 1,		1,215		$	14.28		1,212		$	14.27
Granted		—			—		4			18
Vested or released		(405	)		15.07		—			—
Expired or forfeited		—			—		—			—
Balance, June 30,		810		$	13.89		1,216		$	14.28
Full Value Stock Awards
On June 5, 2014, 11,880 shares of stock were granted to Directors under the 2013 Plan. The fair value of each stock award was estimated to be equal to the closing stock price on the date of the grant. For the three and six months ended June 30, 2014, the Company recognized the $0.3 million fair value of the stock awards in compensation expense.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12. Income Taxes
	A reconciliation of income tax computed at applicable Federal statutory income tax rates to total income tax expense reported is as follows for the three and six months ended June 30, 2014 and 2013:
	(Dollars in thousands)	Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Income before income taxes	$	20,041		$	15,009		$	38,663		$	26,317
	Income taxes computed at Federal statutory tax rate		7,014			5,253			13,532			9,211
	Effect of:
	State taxes (net of federal benefit)		738			588			1,483			1,032
	Tax-exempt interest income, net		(158	)		(170	)		(333	)		(340	)
	Contingent value right expense		114			150			383			1159
	Other, net		(92	)		(241	)		(241	)		61
	Total income tax expense	$	7,616		$	5,580		$	14,824		$	11,123
	The Company uses an estimated annual effective tax rate method in computing its interim tax provision. This effective tax rate is based on forecasted annual pre-tax income, permanent tax differences and statutory tax rates. For the three and six months ended June 30, 2014, the effective income tax rates were 38%. For the three and six months ended June 30, 2013, the effective income tax rates were 37% and 42%, respectively. The fluctuations in effective income tax rates have primarily been due to the impact of the CVR expense.
	For the three and six months ended June 30, 2014 and 2013, the change in value of the CVR and related expense resulted from the overall improvement in our most recent estimates of cash flows, substantially related to the Company’s legacy Southern Community and Green Bankshares portfolios. The potential payments resulting from CVRs issued as a part of these acquisitions, which were non-taxable transactions, are considered by the Internal Revenue Service as additional consideration to the former shareholders. Accordingly, the expense associated with changes in estimated value of the CVRs is not deductible for income tax purposes.
	The Company and its subsidiaries are subject to U.S. federal income tax, as well as income tax of the states of Florida, South and North Carolina and Tennessee. The net deferred tax assets as of June 30, 2014 and December 31, 2013 were $148.4 million and $166.8 million, respectively. A valuation allowance related to deferred tax assets is required when it is considered more likely than not that all or part of the benefit related to such assets will not be realized. In assessing the need for a valuation allowance, the Company considered both positive and negative evidence in concluding that no valuation allowance was necessary at June 30, 2014 and December 31, 2013.
	At June 30, 2014 and December 31, 2013, the Company had $109.3 million and $103.7 million of gross federal and state net operating loss carryforwards, respectively, which begin to expire after 2029 if unused and are subject to an annual limitation of $10.9 million.
	At June 30, 2014 and December 31, 2013, the Company had no amounts recorded for uncertain tax positions.

Fair_Value

Fair Value	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value	'
	13. Fair Value
	FASB guidance on fair value measurements defines fair value, establishes a framework for measuring fair value, and requires fair value disclosures for certain assets and liabilities measured at fair value on a recurring and non-recurring basis.
	This guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability.
	This guidance establishes a fair value hierarchy for disclosure of fair value measurements to maximize the use of observable inputs, that is, inputs that reflect the assumptions market participants would use in pricing an asset or liability based on market data obtained from sources independent of the reporting entity. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
		Level 1:	Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity can 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 in active markets; quoted prices for identical or similar assets or liabilities 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.
	Cash & cash equivalents
	For cash & cash equivalents, the carrying value is primarily utilized as a reasonable estimate of fair value.
	Derivative financial instruments
	Fair values for interest rate swaps, foreign exchange contracts, forward loan sales agreements and interest rate caps are based upon the amounts required to settle the contracts. Fair values for commitments to originate loans held for sale are based on fees currently charged to enter into similar agreements. Fair values for fixed-rate commitments also consider the difference between current levels of interest rates and the committed rates.
	Valuation of Investment Securities
	The fair values of available-for-sale, held-to-maturity and trading securities are determined by: 1) obtaining quoted prices on nationally recognized securities exchanges when available (Level 1 inputs); 2) matrix pricing, which is a mathematical technique widely used in the financial markets 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 (Level 2 inputs); and 3) for certain corporate debt securities that are not actively traded, custom discounted cash flow modeling (Level 3 inputs).
	As of June 30, 2014, Capital Bank held industrial revenue bonds which are floating rate issues. Since there is no active secondary market for the trading of the bonds, the Company has developed a model to estimate fair value. This model determines an appropriate discount rate for the bonds based on current market rates for liquid corporate bonds with an equivalent credit rating plus an estimated illiquidity factor, and calculates the present value of expected future cash flows using this discount rate.
	Mortgage Loans Held for Sale
	Mortgage loans held for sale are carried at the lower of cost or estimated fair value. The fair values of mortgage loans held for sale are based on commitments on hand from investors within the secondary market for loans with similar characteristics. As such, the fair value adjustment for mortgage loans held for sale is classified as nonrecurring Level 2.
	Valuation of Impaired Loans and Other Real Estate Owned
	The fair value of collateral dependent impaired loans with specific allocations of the allowance for loan losses and other real estate owned is generally based on recent real estate appraisals and other available observable market information. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach.
	The Company generally uses independent external appraisers in this process who routinely make adjustments to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value. The Company’s policy is to update appraisals, at a minimum, annually for classified assets, which include collateral dependent loans and OREO. We consider appraisals dated within the past 12 months to be current and do not typically make adjustments to such appraisals. In the Company’s process for reviewing third-party prepared appraisals, any differences of opinion on values, assumptions or adjustments to comparable sales data are typically reconciled directly with the independent appraiser prior to acceptance of the final appraisal.
	Sensitivity to Changes in Significant Unobservable Inputs
	As discussed above, as of June 30, 2014, the Company owns industrial revenue bonds, which require recurring fair value estimates categorized within level 3 of the fair value hierarchy. The significant unobservable inputs used in the fair value measurement of these securities are incorporated in the discounted cash flow modeling valuation. Rates utilized in the modeling of these securities are estimated based upon a variety of factors including the market yields of other non-investment grade corporate debt. Significant changes in any inputs in isolation would result in significantly different fair value estimates.
	Assets and Liabilities Measured on a Recurring Basis
	Assets and liabilities measured at fair value on a recurring basis are summarized below as of June 30, 2014:
	(Dollars in thousands)					Fair Value Measurement Using:
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical			Inputs			(Level 3)
						Assets			(Level 2)
						(Level 1)
	Assets
	Trading securities		$	6,515		$	4,250		$	2,265		$	—
	Available-for-sale securities:
	Mortgage-backed securities—residential			590,060			—			590,060			—
	Industrial revenue bonds			3,736			—			—			3,736
	Marketable equity securities			949			—			949			—
	Available-for-sale securities		$	594,745		$	—		$	591,009		$	3,736
	Gross asset value of derivatives		$	5		$	—		$	5		$	—
	Liabilities
	Gross liability value of derivatives		$	211		$	—		$	211		$	—
	There were no transfers of assets and liabilities between levels of the fair value hierarchy during the three and six months ended June 30, 2014.
	Assets and liabilities measured at fair value on a recurring basis are summarized below as of December 31, 2013:
	(Dollars in thousands)					Fair Value Measurement Using:
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical			Inputs			(Level 3)
						Assets			(Level 2)
						(Level 1)
	Assets
	Trading securities		$	6,348		$	4,477		$	1,871	(1)	$	—
	Available-for-sale securities:
	Asset-backed securities			133,225			—			133,225			—
	Mortgage-backed securities-residential			546,626			—			546,626			—
	Industrial revenue bonds			3,859			—			—			3,859
	Marketable equity securities			931			—			931	(1)		—
	Collateralized debt obligations			800			—			800			—
	Available-for-sale securities		$	685,441		$	—		$	681,582		$	3,859
	Gross asset value of derivatives		$	15		$	—		$	15		$	—
	Liabilities
	Gross liability value of derivatives		$	1,330		$	—		$	1,330		$	—
		-1	Transferred from Level 1 to Level 2 due to limited observable market data.
	The tables below present the activity and income statement classifications of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and six months ended and held at June 30, 2014:
(Dollars in thousands)		Fair Value Measurement Using
		Significant Unobservable
		Inputs (Level 3)
		Industrial
		Revenue Bonds
Beginning balance, March 31, 2014		$	3,727
Included in other comprehensive income			9
Ending balance, June 30, 2014		$	3,736
(Dollars in thousands)		Fair Value Measurement Using
		Significant Unobservable
		Inputs (Level 3)
		Industrial
		Revenue Bonds
Beginning balance, January 1, 2014		$	3,859
Principal reduction			(170	)
Included in other comprehensive income			47
Ending balance, June 30, 2014		$	3,736
The tables below present the activity and income statement classifications of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and six months ended and held at June 30, 2013:
(Dollars in thousands)		Fair Value Measurement Using Significant
		Unobservable Inputs (Level 3)
		Corporate Bonds			Industrial			Collateralized
					Revenue			Debt
					Bonds			Obligations
Beginning balance, March 31, 2013		$	26		$	3,857		$	307
Included in earnings-gain on sales			199			—			—
Included in other comprehensive income			—			15			(6	)
Sales			(225	)		—			—
Ending balance, June 30, 2013		$	—		$	3,872		$	301
(Dollars in thousands)		Fair Value Measurement Using Significant
		Unobservable Inputs (Level 3)
		Corporate Bonds			Industrial			Collateralized
					Revenue			Debt
					Bonds			Obligations
Beginning balance, January 1, 2013		$	26		$	3,800		$	297
Included in earnings-gain on sales			199			—			—
Included in other comprehensive income			—			72			4
Sales			(225	)		—			—
Ending balance, June 30, 2013		$	—		$	3,872		$	301
Quantitative Information about Recurring Level 3 Fair Value Measurements
(Dollars in thousands)		Fair Value at			Valuation Technique			Significant		Range
		June 30, 2014						Unobservable
								Input
Industrial revenue bonds		$	3,736			Discounted cash flow		Discount rate		3.50%
								Illiquidity factor		0.50%
(Dollars in thousands)		Fair Value at			Valuation Technique			Significant		Range
		December 31, 2013						Unobservable
								Input
Industrial revenue bonds		$	3,859			Discounted cash flow		Discount rate		3.7%-3.9%
								Illiquidity factor		0.50%
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Assets and liabilities measured at fair value on a nonrecurring basis are summarized below as of June 30, 2014:
(Dollars in thousands)		Fair Value Measurement Using:
		Quoted Prices in			Significant			Significant
		Active Markets			Other			Unobservable
		for Identical			Observable			Inputs
		Assets			Inputs			(Level 3)
		(Level 1)			(Level 2)
Assets
Other real estate owned		$	—		$	—		$	83,761
Other repossesed assets			—			107			—
Impaired loans			—			—			790
Other real estate owned measured at fair value as of June 30, 2014 had a carrying amount of $104.1 million, less valuation allowances totaling $20.4 million. Other repossessed assets are primarily comprised of repossessed vehicles and equipment and are measured at fair value as of the date of repossession.
Assets and liabilities measured at fair value on a nonrecurring basis are summarized below as of December 31, 2013:
(Dollars in thousands)		Fair Value Measurement Using:
		Quoted Prices in			Significant			Significant
		Active Markets			Other			Unobservable
		for Identical			Observable			Inputs
		Assets			Inputs			(Level 3)
		(Level 1)			(Level 2)
Assets
Other real estate owned		$	—		$	—		$	118,579
Other repossesed assets			—			108			—
Impaired loans			—			—			1,332
Other real estate owned measured at fair value as of December 31, 2013 had a carrying amount of $138.4 million, less valuation allowances totaling $19.8 million. Other repossessed assets are primarily comprised of repossessed vehicles and equipment and are measured at fair value as of the date of repossession.
Quantitative Information about Nonrecurring Level 3 Fair Value Measurements
(Dollars in thousands)		Fair Value at			Valuation Technique		Significant Unobservable Input	Range
		June 30, 2014
Other real estate owned		$	83,761		Fair value of property		Appraised value less cost to sell	6%-10%
Impaired loans			790		Fair value of collateral		Appraised value less cost to sell	6%-8%
(Dollars in thousands)		Fair Value at			Valuation Technique		Significant Unobservable Input	Range
		December 31, 2013
Other real estate owned		$	118,579		Fair value of property		Appraised value less cost to sell	7%-10%
Impaired loans			1,332		Fair value of collateral		Appraised value less cost to sell	8%
Carrying amount and estimated fair values of financial instruments were as follows:
(Dollars in thousands)		Fair Value Measurement
June 30, 2014		Carrying Value			Estimated			Level 1			Level 2		Level 3
					Fair Value
Financial Assets
Cash and cash equivalents		$	141,033		$	141,033		$	141,033		$	—	$	—
Trading securities			6,515			6,515			4,250			2,265		—
Investment securities available-for-sale			594,745			594,745			—			591,009		3,736
Investment securities held-to-maturity			475,167			480,971			—			480,971		—
Loans, net			4,666,868			4,850,557			—			9,926		4,840,631
FDIC indemnification asset			25,529			25,529			—			—		25,529
Receivable from FDIC			4,578			4,578			—			4,578		—
Other (1)			44,873			44,873			—			—		44,873
Gross asset value of derivatives			5			5			—			5		—
Total financial assets		$	5,959,313		$	6,148,806		$	145,283		$	1,088,754	$	4,914,769
Financial Liabilities
Noncontractual deposits		$	3,801,729		$	3,801,729		$	—		$	—	$	3,801,729
Contractual deposits			1,359,727			1,356,923			—			—		1,356,923
Federal Home Loan Bank advances			161,185			161,124			—			161,124		—
Short-term borrowings			32,814			32,814			—			32,814		—
Long-term borrowings			52,993			55,178			—			—		55,178
Subordinated debentures			86,123			96,786			—			—		96,786
Gross liability value of derivatives			211			211			—			211		—
Total financial liabilities		$	5,494,782		$	5,504,765		$	—		$	194,149	$	5,310,616
(Dollars in thousands)		Fair Value Measurement
December 31, 2013		Carrying Value			Estimated			Level 1			Level 2		Level 3
					Fair Value
Financial Assets
Cash and cash equivalents		$	164,441		$	164,441		$	164,441		$	—	$	—
Trading securities			6,348			6,348			4,477			1,871		—
Investment securities available-for-sale			685,441			685,441			—			681,582		3,859
Investment securities held-to-maturity			465,098			459,693			—			459,693		—
Loans, net			4,495,178			4,681,554			—			8,012		4,673,542
FDIC indemnification asset			33,610			33,610			—			—		33,610
Receivable from FDIC			7,624			7,624			—			7,624		—
Other (1)			44,088			44,088			—			—		44,088
Gross asset value of derivatives			15			15			—			15		—
Total financial assets		$	5,901,843		$	6,082,814		$	168,918		$	1,158,797	$	4,755,099
Financial Liabilities
Noncontractual deposits		$	3,737,566		$	3,737,566		$	—		$	—	$	3,737,566
Contractual deposits			1,447,497			1,448,032			—			—		1,448,032
Federal Home Loan Bank advances			96,278			96,241			—			96,241		—
Short-term borrowings			24,850			24,850			—			24,850		—
Long-term borrowings			53,449			55,861			—			—		55,861
Subordinated debentures			85,112			100,795			—			—		100,795
Gross liability value of derivatives			1,330			1,330			—			1,330		—
Total financial liabilities		$	5,446,082		$	5,464,675		$	—		$	122,421	$	5,342,254
-1	Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stock.
The methods and assumptions used to estimate fair value are described as follows:
Carrying amount is the estimated fair value for cash and cash equivalents, receivable from FDIC, derivatives, noncontractual demand deposits and certain short-term borrowings. As it is not practicable to determine the fair value of Federal Reserve, Federal Home Loan Bank stock, FDIC indemnification asset and correspondent bank’s stocks due to restrictions placed on transferability, the estimated fair value is equal to their carrying amount. Security fair values are based on market prices or dealer quotes and, if no such information is available, on the rate and term of the security and information about the issuer including estimates of discounted cash flows when necessary. For fixed rate loans or contractual deposits and for variable rate loans or deposits with infrequent repricing or repricing limits, fair value is based on discounted cash flows using current market rates applied to the estimated life, adjusted for the allowance for loan losses. Fair values for impaired loans are estimated using discounted cash flow analysis or underlying collateral values. Fair value of long-term debt is based on current rates for similar financing. The fair value of off-balance sheet items that include commitments to extend credit to fund commercial, consumer, real estate construction and real estate-mortgage loans and to fund standby letters of credit is considered nominal.

Derivative_Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Derivative Instruments	'
	14. Derivative Instruments
	The Company has derivative financial instruments acquired in its purchase of SCMF, primarily in the form of interest rate swaps. The forward loan sales contracts are derived from loans held for sale or in the Company’s pipeline. These transactions involve both credit and market risk.
	The Company’s derivative instrument contracts which are recorded in other assets and other liabilities on the Company’s balance sheets consist of the following:
	(Dollars in thousands)	June 30, 2014				December 31, 2013
		Fair Value		Notional		Fair Value		Notional
				Amount				Amount
	Assets
	Interest rate cap contracts (matured in 2014)	$	—	$	—	$	—	$	12,500
	Forward loan sales contracts (maturing in 2014)		5		2,613		15		4,215
	Total assets	$	5	$	2,613	$	15	$	16,715
	Liabilities
	Interest rate swaps associated with certificates of deposits (maturing in 2040)	$	162	$	25,000	$	1,320	$	25,000
	Forward loan sales contracts (maturing in 2014)		49		10,723		10		3,545
	Total liabilities	$	211	$	35,723	$	1,330	$	28,545
	The Company does not enter into derivative financial instruments for speculative purposes. None of the derivatives held are designated as hedging instruments or otherwise qualify for hedge accounting treatment and all changes in fair value are recognized in non-interest income or non-interest expense during the period of change. For the three and six months ended June 30, 2014, the company recorded $0.6 million and $1.7 million, respectively, in non-interest income, and $16 thousand and $35 thousand, respectively, in non-interest expense as a result of changes in fair value of derivatives. For the three and six months ended June 30, 2013, the company recorded $0.5 million and $0.7 million in non-interest income, respectively, and $0.1 million and $0.2 million in non-interest expense, respectively, as a result of changes in fair value of derivatives
	The Company is exposed to credit-related losses in the event of nonperformance by the counterparties to these agreements. The Company controls the credit risk of its financial contracts through credit approvals, limits and monitoring procedures and agreements that specify collateral levels to be maintained by the Company and the counterparties. These collateral levels are based on the credit rating of the counterparties.
	The primary objective for each of these contracts is to minimize risk. Interest rate risk being the primary risk for the interest rate swaps and forward loan sales contracts.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Principles of Consolidation and Nature of Operations	'
	Principles of Consolidation and Nature of Operations
	Capital Bank Financial Corp. (“CBF” or the “Company”; formerly known as North American Financial Holdings, Inc.) is a bank holding company incorporated in Delaware and headquartered in Florida whose business is conducted primarily through Capital Bank, National Association (“Capital Bank, NA” or the “Bank”). CBF has a total of 162 full service banking offices located in Florida, North and South Carolina, Tennessee and Virginia.
	In September 2012, Capital Bank Corporation (“CBKN”), Green Bankshares Inc. (“GRNB”) and TIB Financial Corp. (“TIBB”), majority owned subsidiaries of the Company, merged with and into Capital Bank Financial Corp. with CBF continuing as the surviving corporation (the “Reorganization”). Upon completion of the Reorganization, the outstanding common shares held by the minority shareholders were converted into an aggregate of 3.7 million shares of CBF’s Class A common stock. The Reorganization was accounted for as a merger with CBF as the acquirer (which is the surviving entity for legal purposes).
	On October 1, 2012, the Company completed its acquisition of Southern Community Financial Corporation (“SCMF” or “Southern Community”), a publicly held bank holding company headquartered in Winston Salem, North Carolina.
	The accompanying consolidated financial statements (Unaudited) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and Regulation S-X. Accordingly, they do not include all of the information and disclosures required by US GAAP for complete financial statement presentation. In the opinion of management, all adjustments consisting of normal recurring accruals and disclosures considered necessary for a fair interim presentation have been included. All significant inter-company accounts and transactions have been eliminated in consolidation. For further information refer to the Company’s consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013.
Out of Period Adjustments	'
	Out of Period Adjustments
	During the three months ended March 31, 2014, the Company recorded a correction of an error resulting from the state net operating loss that the Company was not entitled to subsequent to the 2011 Green Bankshares acquisition. The impact of this correction decreased deferred tax assets and increased goodwill by $2.5 million. After evaluating the quantitative and qualitative aspects of this error, the Company concluded that its prior period financial statements were not materially misstated.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In June 2014, the Financial Accounting Standard Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2014-12, “Compensation- Stock Compensation (Topic 718)—Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period”. This update provides specific guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a nonvesting condition that affects the grant-date fair value of an award. This ASU is effective for fiscal years and interim periods beginning after December 15, 2015. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In June 2014, the FASB issued ASU No. 2014-11, “Transfers and Servicing (topic 860)—Repurchase-to-Maturity Transactions, Repurchase Financing, and Disclosures”. This update changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The amendments also require two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The disclosure for certain transactions accounted for as a sale is required to be presented for interim and annual periods beginning after December 15, 2014, and the disclosure for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secured borrowings is required to be presented for annual periods beginning after December 15, 2014, and interim periods beginning after December 15, 2015. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”. This update clarifies the principles for recognizing revenue from contracts with customers. This ASU, which does not apply to financial instruments, is effective for interim and annual reporting periods beginning after December 15, 2016. The Company is currently evaluating this ASU to determine the impact on its consolidated financial position, results of operations and cash flows.
	In January 2014, the FASB issued ASU 2014-04, “Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” This update clarifies that when 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. This ASU is effective for fiscal years and interim periods beginning after December 15, 2014. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In January 2014, the FASB issued ASU 2014-01, “Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects (a consensus of the FASB Emerging Issues Task Force).” This ASU allows for use of the proportional amortization method for qualified affordable housing projects if certain conditions are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and the net investment performance is recognized in the income statement as a component of income tax expense. This ASU provides for a practical expedient, which allows for amortization of only expected tax credits over the period tax credits are expected to be received. This method is permitted if it produces a measurement that is substantially similar to the measurement that would result from using both tax credits and other tax benefits. This ASU is effective for fiscal years and interim periods beginning after December 15, 2014. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.
	In July 2013, the FASB issued ASU 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists”. This update requires an unrecognized tax benefit related to a net operating loss carryforward, a similar tax loss or a tax credit carryforward to be presented as a reduction to a deferred tax asset, unless the tax benefit is not available at the reporting date to settle any additional income taxes under the tax law of the applicable tax jurisdiction. For public entities, this ASU is effective for fiscal years and interim periods beginning after December 15, 2013, with early adoption permitted. The adoption on January 1, 2014 did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Computation of Earnings Per Share	'
	Earnings per share have been computed based on the following:
	(Shares in thousands)	Three Months Ended				Six Months Ended
		June 30, 2014		June 30, 2013		June 30, 2014		June 30, 2013
	Weighted average number of shares outstanding:
	Basic		49,090		53,108		49,800		53,865
	Dilutive effect of options outstanding		527		—		486		—
	Dilutive effect of restricted shares		644		954		806		912
	Diluted		50,261		54,062		51,092		54,777
Weighted Average Anti-Dilutive Stock Options and Unvested Restricted Shares Excluded from the Computation of Diluted Earnings Per Share	'
	Weighted average anti-dilutive stock options and unvested restricted shares excluded from the computation of diluted earnings per share are as follows:
	(Shares in thousands)	Three Months Ended				Six Months Ended
		June 30, 2014		June 30, 2013		June 30, 2014		June 30, 2013
	Anti-dilutive stock options		14		3,000		14		2,942
	Anti-dilutive restricted shares		—		—		—		—

Investment_Securities_Tables

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]	'
Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity	'
	The amortized cost and estimated fair value of investment securities available-for-sale and held-to-maturity at June 30, 2014, and December 31, 2013 are presented below:
	(Dollars in thousands)	June 30, 2014
		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value
	Available-for-Sale
	Marketable equity securities	$	946	$	3	$	—		$	949
	Mortgage-backed securities—residential issued by government sponsored entities		587,142		3,965		1,047			590,060
	Industrial revenue bonds		3,580		156		—			3,736
	Total	$	591,668	$	4,124	$	1,047		$	594,745
	Held-to-Maturity
	U.S. Government agencies	$	14,567	$	2	$	4		$	14,565
	Corporate bonds		25,000		—		—			25,000
	State and political subdivisions—tax exempt		13,599		433		—			14,032
	State and political subdivisions—taxable		541		20		—			561
	Mortgage-backed securities—residential issued by government sponsored entities		421,460		5,353		—			426,813
	Total	$	475,167	$	5,808	$	4		$	480,971
	(Dollars in thousands)	31-Dec-13
		Amortized		Unrealized		Unrealized			Estimated
		Cost		Gains		Losses			Fair Value
	Available-for-Sale
	Asset-backed securities	$	133,647	$	363	$	785		$	133,225
	Marketable equity securities		946		—		15			931
	Mortgage-backed securities—residential issued by government sponsored entities		549,869		2,337		5,580			546,626
	Industrial revenue bonds		3,750		109		—			3,859
	Collateralized debt obligations		505		295		—			800
	Total	$	688,717	$	3,104	$	6,380		$	685,441
	Held-to-Maturity
	U.S. Government agencies	$	14,972	$	—	$	401		$	14,571
	State and political subdivisions—tax exempt		14,201		27		129			14,099
	State and political subdivisions—taxable		545		—		12			533
	Mortgage-backed securities—residential issued by government sponsored entities		435,380		328		5,218			430,490
	Total	$	465,098	$	355	$	5,760		$	459,693
Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity by Contractual Maturity	'
	The estimated fair value of investment securities at June 30, 2014, by contractual maturity, is shown in the table that follows. Expected maturities may differ from contractual maturities because borrowers may have the right to call or repay obligations without call or prepayment penalties. Debt securities not due at a single maturity date are shown separately.
	(Dollars in thousands)	June 30, 2014
		Amortized		Estimated		Yield
		Cost		Fair Value
	Available-for-sale
	Due in one year or less	$	—	$	—		—
	Due after one year through five years		—		—		—
	Due after five years through ten years		—		—		—
	Due after ten years		3,580		3,736		2.23	%
	Mortgage-backed securities—residential issued by government sponsored entities		587,142		590,060		1.8	%
			590,722		593,796		1.8	%
	Marketable equity securities		946		949
	Total	$	591,668	$	594,745
		Amortized		Estimated		Yield
		Cost		Fair Value
	Held-to-maturity
	Due in one year or less	$	205	$	205		0.76	%
	Due after one year through five years		919		934		2.3	%
	Due after five years through ten years		34,991		35,258		4.59	%
	Due after ten years		17,592		17,761		3.04	%
	Mortgage-backed securities—residential issued by government sponsored entities		421,460		426,813		2.39	%
	Total	$	475,167	$	480,971		2.58	%
Securities with Unrealized Losses Not Recognized in Income	'
	Securities with unrealized losses not recognized in income, and the period of time they have been in an unrealized loss position, are as follows:
	(Dollars in thousands)	Less than 12 Months				12 Months or Longer					Total
		Estimated		Unrealized		Estimated			Unrealized		Estimated		Unrealized
		Fair Value		Losses		Fair Value			Losses		Fair Value		Losses
	June 30, 2014
	Available-for-Sale
	Mortgage-backed securities—residential issued by government sponsored entities	$	193,239	$	820	$	47,426		$	227	$	240,665	$	1,047
	Total	$	193,239	$	820	$	47,426		$	227	$	240,665	$	1,047
	Held-to-Maturity
	U.S. Government agencies	$	7,662	$	4	$	—		$	—	$	7,662	$	4
	Total	$	7,662	$	4	$	—		$	—	$	7,662	$	4
	(Dollars in thousands)	Less than 12 Months				12 Months or Longer					Total
		Estimated		Unrealized		Estimated			Unrealized		Estimated		Unrealized
		Fair Value		Losses		Fair Value			Losses		Fair Value		Losses
	December 31, 2013
	Available-for-Sale
	Asset-backed securities	$	102,835	$	785	$	—		$	—	$	102,835	$	785
	Marketable equity securities		931		15		—			—		931		15
	Mortgage-backed securities—residential issued by government sponsored entities		339,565		5,580		—			—		339,565		5,580
	Total	$	443,331	$	6,380	$	—		$	—	$	443,331	$	6,380
	Held-to-Maturity
	U.S. Government agencies	$	14,571	$	401	$	—		$	—	$	14,571	$	401
	State and political subdivisions—tax exempt		10,489		129		—			—		10,489		129
	State and political subdivisions—taxable		533		12		—			—		533		12
	Mortgage-backed securities—residential issued by government sponsored entities		342,333		5,218		—			—		342,333		5,218
	Total	$	367,926	$	5,760	$	—		$	—	$	367,926	$	5,760

Loans_Tables

Loans (Tables)	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Major Classifications of Loans	'
	Major classifications of loans, including loans held for sale, are as follows:
	(Dollars in thousands)	June 30, 2014			December 31, 2013
	Non-owner occupied commercial real estate	$	793,733		$	775,733
	Other commercial construction and land		243,671			300,494
	Multifamily commercial real estate		62,793			67,688
	1-4 family residential construction and land		80,160			71,351
	Total commercial real estate		1,180,357			1,215,266
	Owner occupied commercial real estate		1,040,533			1,058,148
	Commercial and industrial loans		932,800			803,736
	Lease financing		2,346			2,676
	Total commercial		1,975,679			1,864,560
	1-4 family residential		863,897			804,322
	Home equity loans		380,767			386,366
	Other consumer loans		213,639			170,526
	Total consumer		1,458,303			1,361,214
	Other		107,836			110,989
	Total loans	$	4,722,175		$	4,552,029
Roll Forward of Accretable Yield	'
	The table below presents a rollforward of accretable yield and income expected to be earned related to PCI loans and the amount of non-accretable difference at the end of the period. Nonaccretable difference represents estimated contractually required payments in excess of estimated cash flows expected to be collected. The accretable yield represents the excess of estimated cash flows expected to be collected over the carrying amount of the PCI loans. Other represents reductions of accretable yield due to non-credit events such as interest rate reductions on variable rate PCI loans and prepayment activity on PCI loans.
	(Dollars in thousands)	Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Accretable Yield
	Balance at beginning of period	$	346,995		$	491,237		$	383,775		$	553,348
	Accretion of income		(31,021	)		(42,023	)		(64,183	)		(87,009	)
	Reclassification from nonaccretable difference		29,229			20,826			35,896			31,099
	Other		(15,782	)		(25,559	)		(26,067	)		(52,957	)
	Balance at end of period	$	329,421		$	444,481		$	329,421		$	444,481
	Nonaccretable Difference
	Balance at end of period	$	232,776		$	358,810		$	232,776		$	358,810
Summary of Company's Estimate of Cash Flows for Purchased Credit-Impaired Loans	'
	The following table represents the periods we estimate the accretable yield will accrete into income based on the Company’s most recent estimates of cash flows for PCI loans:
	(Dollars in thousands)
	Periods ending December 31,
	2014	$	54,928
	2015		87,936
	2016		61,438
	2017		41,080
	2018		27,909
	Thereafter		56,130
	Total	$	329,421
Major Categories of Loans	'
	The following is a summary of the major categories of non-covered loans outstanding as of June 30, 2014 and December 31, 2013:
	(Dollars in thousands)	Non-PCI Loans
	June 30, 2014	New			Acquired			PCI Loans			Total
											Non-covered
											Loans
	Non-owner occupied commercial real estate	$	295,756		$	68,261		$	389,203		$	753,220
	Other commercial construction and land		62,754			246			163,498			226,498
	Multifamily commercial real estate		17,179			14,061			26,720			57,960
	1-4 family residential construction and land		66,334			—			13,826			80,160
	Total commercial real estate		442,023			82,568			593,247			1,117,838
	Owner occupied commercial real estate		687,303			42,236			250,346			979,885
	Commercial and industrial loans		795,315			17,081			111,785			924,181
	Lease financing		2,346			—			—			2,346
	Total commercial		1,484,964			59,317			362,131			1,906,412
	1-4 family residential		448,315			48,126			306,825			803,266
	Home equity loans		73,749			168,109			91,814			333,672
	Other consumer loans		200,024			5,383			8,167			213,574
	Total consumer		722,088			221,618			406,806			1,350,512
	Other		60,186			3,739			43,043			106,968
	Total loans	$	2,709,261		$	367,242		$	1,405,227		$	4,481,730
	(Dollars in thousands)	Non-PCI Loans
	December 31, 2013	New			Acquired			PCI Loans			Total
											Non-covered
											Loans
	Non-owner occupied commercial real estate	$	219,482		$	68,080		$	432,437		$	719,999
	Other commercial construction and land		67,537			252			213,543			281,332
	Multifamily commercial real estate		12,537			16,650			29,392			58,579
	1-4 family residential construction and land		56,978			1			14,372			71,351
	Total commercial real estate		356,534			84,983			689,744			1,131,261
	Owner occupied commercial real estate		642,794			48,459			299,593			990,846
	Commercial and industrial loans		643,044			20,519			129,961			793,524
	Lease financing		2,676			—			—			2,676
	Total commercial		1,288,514			68,978			429,554			1,787,046
	1-4 family residential		332,585			52,078			349,060			733,723
	Home equity loans		52,918			181,138			100,995			335,051
	Other consumer loans		151,584			6,407			12,433			170,424
	Total consumer		537,087			239,623			462,488			1,239,198
	Other		57,320			3,959			47,888			109,167
	Total loans	$	2,239,455		$	397,543		$	1,629,674		$	4,266,672
	Covered Loans
	The following is a summary of the major categories of covered loans outstanding as of June 30, 2014 and December 31, 2013:
	(Dollars in thousands)	Non-PCI Loans
	June 30, 2014	New			Acquired			PCI Loans			Total Covered
											Loans
	Non-owner occupied commercial real estate	$	—		$	—		$	40,513		$	40,513
	Other commercial construction and land		—			—			17,173			17,173
	Multifamily commercial real estate		—			—			4,833			4,833
	1-4 family residential construction and land		—			—			—			—
	Total commercial real estate		—			—			62,519			62,519
	Owner occupied commercial real estate		—			—			60,648			60,648
	Commercial and industrial loans		—			195			8,424			8,619
	Lease financing		—			—			—			—
	Total commercial		—			195			69,072			69,267
	1-4 family residential		—			1,423			59,208			60,631
	Home equity loans		—			33,049			14,046			47,095
	Other consumer loans		—			—			65			65
	Total consumer		—			34,472			73,319			107,791
	Other		—			—			868			868
	Total loans	$	—		$	34,667		$	205,778		$	240,445
	(Dollars in thousands)	Non-PCI Loans
	December 31, 2013	New			Acquired			PCI Loans			Total Covered
											Loans
	Non-owner occupied commercial real estate	$	—		$	—		$	55,734		$	55,734
Other commercial construction and land		—			—			19,162			19,162
Multifamily commercial real estate		—			—			9,109			9,109
1-4 family residential construction and land		—			—			—			—
Total commercial real estate		—			—			84,005			84,005
Owner occupied commercial real estate		—			—			67,302			67,302
Commercial and industrial loans		—			356			9,856			10,212
Lease financing		—			—			—			—
Total commercial		—			356			77,158			77,514
1-4 family residential		—			1,017			69,582			70,599
Home equity loans		—			36,114			15,201			51,315
Other consumer loans		—			—			102			102
Total consumer		—			37,131			84,885			122,016
Other		—			—			1,822			1,822
Total loans	$	—		$	37,487		$	247,870		$	285,357
Aging of the Recorded Investment in Past Due Loans, Based on Contractual Terms	'
	The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of June 30, 2014:
	(Dollars in thousands)	30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
	Non-purchased credit impaired loans	Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
	Non-owner occupied commercial real estate	$	—		$	—		$	—		$	—		$	1,250	$	—	$	1,250
	Other commercial construction and land		10			—			—			—			314		—		324
	Multifamily commercial real estate		—			—			—			—			—		—		—
	1-4 family residential construction and land		—			—			—			—			—		—		—
	Total commercial real estate		10			—			—			—			1,564		—		1,574
	Owner occupied commercial real estate		15			—			—			—			1,648		—		1,663
	Commercial and industrial loans		211			—			—			—			2,424		66		2,701
	Total commercial		226			—			—			—			4,072		66		4,364
	1-4 family residential		359			45			—			—			1,628		28		2,060
	Home equity loans		1,188			291			—			—			2,186		1,086		4,751
	Other consumer loans		2,546			—			—			—			728		—		3,274
	Total consumer		4,093			336			—			—			4,542		1,114		10,085
	Other		—			—			—			—			10		—		10
	Total loans	$	4,329		$	336		$	—		$	—		$	10,188	$	1,180	$	16,033
	(Dollars in thousands)	30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
	Purchased credit impaired loans	Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
	Non-owner occupied commercial real estate	$	444		$	—		$	32,945		$	4,124		$	—	$	—	$	37,513
	Other commercial construction and land		162			312			36,046			9,434			—		—		45,954
	Multifamily commercial real estate		—			—			2,100			208			—		—		2,308
	1-4 family residential construction and land		126			—			2,219			—			—		—		2,345
	Total commercial real estate		732			312			73,310			13,766			—		—		88,120
	Owner occupied commercial real estate		2,574			13			26,661			2,955			—		—		32,203
	Commercial and industrial loans		410			1			30,072			182			—		—		30,665
	Total commercial		2,984			14			56,733			3,137			—		—		62,868
	1-4 family residential		3,583			482			32,461			8,460			—		—		44,986
	Home equity loans		1,599			86			5,301			4,343			—		—		11,329
	Other consumer loans		255			—			203			27			—		—		485
	Total consumer		5,437			568			37,965			12,830			—		—		56,800
	Other		17			—			3,014			—			—		—		3,031
	Total loans	$	9,170		$	894		$	171,022		$	29,733		$	—	$	—	$	210,819
	The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of December 31, 2013:
	(Dollars in thousands)	30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
	Non-purchased credit impaired loans	Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
	Non-owner occupied commercial real estate	$	—		$	—		$	—		$	—		$	90	$	—	$	90
	Other commercial construction and land		—			—			—			—			563		—		563
	Multifamily commercial real estate		305			—			—			—			—		—		305
	1-4 family residential construction and land		—			—			—			—			1		—		1
	Total commercial real estate		305			—			—			—			654		—		959
	Owner occupied commercial real estate		20			—			—			—			3,394		—		3,414
	Commercial and industrial loans		2			—			—			—			1,879		66		1,947
	Total commercial		22			—			—			—			5,273		66		5,361
	1-4 family residential		862			—			—			—			1,417		—		2,279
	Home equity loans		1,046			146			—			—			2,324		1,270		4,786
	Other consumer loans		1,800			—			—			—			806		—		2,606
	Total consumer		3,708			146			—			—			4,547		1,270		9,671
	Total loans	$	4,035		$	146		$	—		$	—		$	10,474	$	1,336	$	15,991
	(Dollars in thousands)	30-89 Days Past Due						Greater than 90 Days Past Due						Non-accrual
								and Still Accruing/Accreting
	Purchased credit impaired loans	Non-Covered			Covered			Non-Covered			Covered			Non-Covered		Covered		Total
	Non-owner occupied commercial real estate	$	1,463		$	107		$	35,563		$	10,658		$	—	$	—	$	47,791
	Other commercial construction and land		1,105			—			58,633			8,479			—		—		68,217
	Multifamily commercial real estate		—			—			2,641			—			—		—		2,641
	1-4 family residential construction and land		5			—			1,796			—			—		—		1,801
	Total commercial real estate		2,573			107			98,633			19,137			—		—		120,450
	Owner occupied commercial real estate		4,626			260			33,974			6,631			—		—		45,491
	Commercial and industrial loans		249			—			29,819			1,597			—		—		31,665
	Total commercial		4,875			260			63,793			8,228			—		—		77,156
1-4 family residential		6,696			227			37,646			10,824			—		—		55,393
Home equity loans		1,733			59			7,313			1,227			—		—		10,332
Other consumer loans		344			—			1,249			67			—		—		1,660
Total consumer		8,773			286			46,208			12,118			—		—		67,385
Other		433			—			4,745			954			—		—		6,132
Total loans	$	16,654		$	653		$	213,379		$	40,437		$	—	$	—	$	271,123
Loans, Excluding Purchased Credit-Impaired Loans by Internal Ratings	'
	The following table summarizes loans, excluding purchased credit-impaired loans by internal rating at June 30, 2014:
								Substandard
	(Dollars in thousands)	Pass			Special Mention			Accruing/			Non-accrual			Doubtful		Total
								Accreting
	Non-owner occupied commercial real estate	$	361,677		$	122		$	968		$	1,250		$	—	$	364,017
	Other commercial construction and land		62,274			412			—			314			—		63,000
	Multifamily commercial real estate		31,240			—			—			—			—		31,240
	1-4 family residential construction and land		62,404			2,283			1,647			—			—		66,334
	Total commercial real estate		517,595			2,817			2,615			1,564			—		524,591
	Owner occupied commercial real estate		714,139			5,425			8,327			1,648			—		729,539
	Commercial and industrial loans		804,329			374			5,398			2,490			—		812,591
	Lease financing		2,346			—			—			—			—		2,346
	Total commercial		1,520,814			5,799			13,725			4,138			—		1,544,476
	1-4 family residential		496,054			154			—			1,656			—		497,864
	Home equity loans		269,656			434			1,545			3,272			—		274,907
	Other consumer loans		204,660			—			19			728			—		205,407
	Total consumer		970,370			588			1,564			5,656			—		978,178
	Other		63,653			—			262			10			—		63,925
	Total loans	$	3,072,432		$	9,204		$	18,166		$	11,368		$	—	$	3,111,170
	The following table summarizes loans, excluding purchased credit-impaired loans by internal rating at December 31, 2013:
								Substandard
	(Dollars in thousands)	Pass			Special Mention			Accruing/			Non-accrual			Doubtful		Total
								Accreting
	Non-owner occupied commercial real estate	$	285,919		$	568		$	985		$	90		$	—	$	287,562
	Other commercial construction and land		67,178			48			—			563			—		67,789
	Multifamily commercial real estate		28,882			—			305			—			—		29,187
	1-4 family residential construction and land		53,224			1,958			1,796			1			—		56,979
	Total commercial real estate		435,203			2,574			3,086			654			—		441,517
	Owner occupied commercial real estate		681,571			4,093			2,195			3,394			—		691,253
	Commercial and industrial loans		651,585			1,183			9,206			1,945			—		663,919
	Lease financing		2,676			—			—			—			—		2,676
	Total commercial		1,335,832			5,276			11,401			5,339			—		1,357,848
	1-4 family residential		384,235			28			—			1,417			—		385,680
	Home equity loans		263,490			37			3,050			3,593			—		270,170
	Other consumer loans		157,157			—			28			806			—		157,991
	Total consumer		804,882			65			3,078			5,816			—		813,841
	Other		61,006			—			273			—			—		61,279
	Total loans	$	2,636,923		$	7,915		$	17,838		$	11,809		$	—	$	2,674,485

Allowance_for_Loan_Losses_Tabl

Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Allowance for Loan Losses	'
	Activity in the allowance for loan losses for the three and six months ended June 30, 2014 and 2013 is as follows:
	(Dollars in thousands)		Three Months Ended						Six Months Ended
			June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Balance, beginning of period		$	55,606		$	57,171		$	56,851		$	57,262
	(Reversal) provision for loan losses on PCI loans			(940	)		2,517			(3,428	)		(631	)
	Provision for loan losses on non-PCI loans			2,344			1,950			4,808			10,500
	Non-PCI loans charged-off			(2,176	)		(6,069	)		(4,132	)		(13,390	)
	Recoveries of non-PCI loans previously charged-off			473			1,263			1,208			3,091
	Balance, end of periods		$	55,307		$	56,832		$	55,307		$	56,832
Roll Forward of the Allowance for Loan Losses	'
	The following table presents the roll forward of the allowance for loan losses for the three and six months ended June 30, 2014 by the class of loans against which the allowance is allocated:
	(Dollars in thousands)		March 31, 2014			Provision/			Net (Charge-offs)/			June 30, 2014
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	3,829		$	785		$	(127	)	$	4,487
	Other commercial construction and land			8,892			2,605			5			11,502
	Multifamily commercial real estate			403			77			—			480
	1-4 family residential construction and land			1,559			69			3			1,631
	Total commercial real estate			14,683			3,536			(119	)		18,100
	Owner occupied commercial real estate			3,530			(206	)		(7	)		3,317
	Commercial and industrial loans			8,198			519			(72	)		8,645
	Lease financing			1			—			—			1
	Total commercial			11,729			313			(79	)		11,963
	1-4 family residential			20,383			(3,169	)		(76	)		17,138
	Home equity loans			4,875			(153	)		(432	)		4,290
	Other consumer loans			3,063			1,003			(635	)		3,431
	Total consumer			28,321			(2,319	)		(1,143	)		24,859
	Other			873			(126	)		(362	)		385
	Total loans		$	55,606		$	1,404		$	(1,703	)	$	55,307
	(Dollars in thousands)		December 31, 2013			Provision/			Net(Charge-offs)/			30-Jun-14
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	4,635		$	(34	)	$	(114	)	$	4,487
	Other commercial construction and land			8,217			3,480			(195	)		11,502
	Multifamily commercial real estate			320			160			—			480
	1-4 family residential construction and land			1,558			71			2			1,631
	Total commercial real estate			14,730			3,677			(307	)		18,100
	Owner occupied commercial real estate			4,450			(1,013	)		(120	)		3,317
	Commercial and industrial loans			8,310			330			5			8,645
	Lease financing			3			(2	)		—			1
	Total commercial			12,763			(685	)		(115	)		11,963
	1-4 family residential			21,724			(4,492	)		(94	)		17,138
	Home equity loans			3,869			901			(480	)		4,290
	Other consumer loans			2,682			2,023			(1,274	)		3,431
	Total consumer			28,275			(1,568	)		(1,848	)		24,859
	Other			1,083			(44	)		(654	)		385
	Total loans		$	56,851		$	1,380		$	(2,924	)	$	55,307
	The following tables present the roll forward of the allowance for loan losses for the three and six months ended June 30, 2013 by the class of loans against which the allowance is allocated:
	(Dollars in thousands)		March 31, 2013			Provision/			Net (Charge-offs)/			June 30, 2013
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	3,449		$	871		$	9		$	4,329
	Other commercial construction and land			12,880			(646	)		76			12,310
	Multifamily commercial real estate			192			66			—			258
	1-4 family residential construction and land			1,559			245			2			1,806
	Total commercial real estate			18,080			536			87			18,703
	Owner occupied commercial real estate			4,114			360			222			4,696
	Commercial and industrial loans			10,515			1,757			(3,984	)		8,288
	Total commercial			14,629			2,117			(3,762	)		12,984
	1-4 family residential			16,800			780			(8	)		17,572
	Home equity loans			4,615			(449	)		(229	)		3,937
	Other consumer loans			2,170			712			(521	)		2,361
	Total consumer			23,585			1,043			(758	)		23,870
	Other			877			771			(373	)		1,275
	Total loans		$	57,171		$	4,467		$	(4,806	)	$	56,832
	(Dollars in thousands)		December 31, 2012			Provision/			Net(Charge-offs)/			30-Jun-13
						(Reversals)			Recoveries
	Non-owner occupied commercial real estate		$	3,764		$	592		$	(27	)	$	4,329
	Other commercial construction and land			12,711			(919	)		518			12,310
	Multifamily commercial real estate			348			(131	)		41			258
	1-4 family residential construction and land			1,716			67			23			1,806
	Total commercial real estate			18,539			(391	)		555			18,703
	Owner occupied commercial real estate			4,055			375			266			4,696
	Commercial and industrial loans			7,490			9,149			(8,351	)		8,288
	Total commercial			11,545			9,524			(8,085	)		12,984
	1-4 family residential			15,740			1,812			20			17,572
Home equity loans			8,670			(3,821	)		(912	)		3,937
Other consumer loans			2,082			1,363			(1,084	)		2,361
Total consumer			26,492			(646	)		(1,976	)		23,870
Other			686			1,382			(793	)		1,275
Total loans		$	57,262		$	9,869		$	(10,299	)	$	56,832
Roll Forward of the Allowance for Loan Losses at the PCI and Non-PCI levels	'
	The following tables present the roll forward of the allowance for loan losses for PCI and Non-PCI loans for the three and six months ended June 30, 2014 and 2013, by the class of loans against which the allowance is allocated:
			Three Months Ended
	(Dollars in thousands)		June 30, 2014									June 30, 2013
			Non-PCI			PCI			Total			Non-PCI			PCI			Total
	Allowance for loan losses at the beginning of the period		$	20,194		$	35,412		$	55,606		$	20,496		$	36,675		$	57,171
	Charge-offs:
	Non-owner occupied commercial real estate			204			—			204			11			—			11
	Other commercial construction and land			(1	)		—			(1	)		28			—			28
	1-4 family residential construction and land			(1	)		—			(1	)		—			—			—
	Total commercial real estate			202			—			202			39			—			39
	Owner occupied commercial real estate			8			—			8			—			—			—
	Commercial and industrial loans			106			—			106			4,107			—			4,107
	Lease financing			—			—			—			—			—			—
	Total commercial			114			—			114			4,107			—			4,107
	1-4 family residential			80			—			80			28			—			28
	Home equity loans			465			—			465			587			—			587
	Other consumer loans			781			—			781			680			—			680
	Total consumer			1,326			—			1,326			1,295			—			1,295
	Other			534			—			534			628			—			628
	Total charge-offs			2,176			—			2,176			6,069			—			6,069
	Recoveries:
	Non-owner occupied commercial real estate			77			—			77			20			—			20
	Other commercial construction and land			4			—			4			104			—			104
	1-4 family residential construction and land			2			—			2			2			—			2
	Total commercial real estate			83			—			83			126			—			126
	Owner occupied commercial real estate			1			—			1			222			—			222
	Commercial and industrial loans			34			—			34			123			—			123
	Total commercial			35			—			35			345			—			345
	1-4 family residential			4			—			4			20			—			20
	Home equity loans			33			—			33			358			—			358
	Other consumer loans			146			—			146			159			—			159
	Total consumer			183			—			183			537			—			537
	Other			172			—			172			255			—			255
	Total recoveries			473			—			473			1,263			—			1,263
	Net charge-offs (recoveries)			1,703			—			1,703			4,806			—			4,806
	Provision for loan losses:
	Non-owner occupied commercial real estate			159			626			785			(222	)		1,093			871
	Other commercial construction and land			(1	)		2,606			2,605			(346	)		(300	)		(646	)
	Multifamily commercial real estate			(13	)		90			77			(6	)		72			66
	1-4 family residential construction and land			(36	)		105			69			6			239			245
	Total commercial real estate			109			3,427			3,536			(568	)		1,104			536
	Owner occupied commercial real estate			(183	)		(23	)		(206	)		(277	)		637			360
	Commercial and industrial loans			347			172			519			1,057			700			1,757
	Lease financing			(1	)		1			—			—			—			—
	Total commercial			163			150			313			780			1,337			2,117
	1-4 family residential			303			(3,472	)		(3,169	)		115			665			780
	Home equity loans			473			(626	)		(153	)		359			(808	)		(449	)
	Other consumer loans			899			104			1,003			750			(38	)		712
	Total consumer			1,675			(3,994	)		(2,319	)		1,224			(181	)		1,043
	Other			397			(523	)		(126	)		514			257			771
	Total provision for loan losses			2,344			(940	)		1,404			1,950			2,517			4,467
	Allowance for loan losses at the end of the period		$	20,835		$	34,472		$	55,307		$	17,640		$	39,192		$	56,832
	(Dollars in thousands)		Six Months Ended
			June 30, 2014									June 30, 2013
			Non-PCI			PCI			Total			Non-PCI			PCI			Total
	Allowance for loan losses at the beginning of the period		$	18,951		$	37,900		$	56,851		$	17,439		$	39,823		$	57,262
	Charge-offs:
	Non-owner occupied commercial real estate			204			—			204			92			—			92
	Other commercial construction and land			207			—			207			102			—			102
	1-4 family residential construction and land			2			—			2			—			—			—
	Total commercial real estate			413			—			413			194			—			194
	Owner occupied commercial real estate			144			—			144			—			—			—
	Commercial and industrial loans			161			—			161			9,011			—			9,011
Total commercial			305			—			305			9,011			—			9,011
1-4 family residential			101			—			101			28			—			28
Home equity loans			594			—			594			1,367			—			1,367
Other consumer loans			1,588			—			1,588			1,381			—			1,381
Total consumer			2,283			—			2,283			2,776			—			2,776
Other			1,131			—			1,131			1,409			—			1,409
Total charge-offs			4,132			—			4,132			13,390			—			13,390
Recoveries:
Non-owner occupied commercial real estate			90			—			90			65			—			65
Other commercial construction and land			12			—			12			620			—			620
Multifamily commercial real estate			—			—			—			41			—			41
1-4 family residential construction and land			4			—			4			23			—			23
Total commercial real estate			106			—			106			749			—			749
Owner occupied commercial real estate			24			—			24			266			—			266
Commercial and industrial loans			166			—			166			660			—			660
Total commercial			190			—			190			926			—			926
1-4 family residential			7			—			7			48			—			48
Home equity loans			114			—			114			455			—			455
Other consumer loans			314			—			314			297			—			297
Total consumer			435			—			435			800			—			800
Other			477			—			477			616			—			616
Total recoveries			1,208			—			1,208			3,091			—			3,091
Net charge-offs (recoveries)			2,924			—			2,924			10,299			—			10,299
Provision for loan losses:
Non-owner occupied commercial real estate			181			(215	)		(34	)		(199	)		791			592
Other commercial construction and land			499			2,981			3,480			(527	)		(392	)		(919	)
Multifamily commercial real estate			(24	)		184			160			(47	)		(84	)		(131	)
1-4 family residential construction and land			(70	)		141			71			107			(40	)		67
Total commercial real estate			586			3,091			3,677			(666	)		275			(391	)
Owner occupied commercial real estate			39			(1,052	)		(1,013	)		(555	)		930			375
Commercial and industrial loans			382			(52	)		330			8,179			970			9,149
Lease financing			(2	)		—			(2	)		—			—			—
Total commercial			419			(1,104	)		(685	)		7,624			1,900			9,524
1-4 family residential			557			(5,049	)		(4,492	)		145			1,667			1,812
Home equity loans			614			287			901			1,020			(4,841	)		(3,821	)
Other consumer loans			2,087			(64	)		2,023			1,523			(160	)		1,363
Total consumer			3,258			(4,826	)		(1,568	)		2,688			(3,334	)		(646	)
Other			545			(589	)		(44	)		854			528			1,382
Total provision for loan losses			4,808			(3,428	)		1,380			10,500			(631	)		9,869
Allowance for loan losses at the end of the period		$	20,835		$	34,472		$	55,307		$	17,640		$	39,192		$	56,832
Summary of Allowance for Loan Losses and Recorded Investment in Loans by Class of Loans and by Impairment Evaluation	'
	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by class of loans and by impairment evaluation method as of June 30, 2014:
	(Dollars in thousands)		Allowance for Loan Losses									Loans
			Individually			Collectively			Purchased			Individually			Collectively			Purchased
			Evaluated			Evaluated			Credit-			Evaluated			Evaluated			Credit-
			for			for			Impaired			for			for			Impaired
			Impairment			Impairment						Impairment			Impairment (1)
	Non-owner occupied commercial real estate		$	—		$	1,682		$	2,805		$	632		$	363,385		$	429,716
	Other commercial construction and land			—			1,505			9,997			—			63,000			180,671
	Multifamily commercial real estate			—			92			388			—			31,240			31,553
	1-4 family residential construction and land			—			997			634			—			66,334			13,826
	Total commercial real estate			—			4,276			13,824			632			523,959			655,766
	Owner occupied commercial real estate			—			2,531			786			4,904			724,635			310,994
	Commercial and industrial loans			1			7,263			1,381			6,277			806,314			120,209
	Lease financing			—			1			—			—			2,346			—
	Total commercial			1			9,795			2,167			11,181			1,533,295			431,203
	1-4 family residential			3			2,739			14,396			790			487,148			366,033
	Home equity loans			17			516			3,757			240			274,667			105,860
	Other consumer loans			9			3,121			301			157			205,250			8,232
	Total consumer			29			6,376			18,454			1,187			967,065			480,125
	Other			—			358			27			—			63,925			43,911
	Total loans		$	30		$	20,805		$	34,472		$	13,000		$	3,088,244		$	1,611,005
	-1	Loans collectively evaluated for impairment include $401.9 million of acquired loans which are presented net of unamortized purchase discounts of $14.0 million.
	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and by impairment evaluation method as of December 31, 2013:
	(Dollars in thousands)		Allowance for Loan Losses									Loans
			Individually			Collectively			Purchased			Individually			Collectively			Purchased
			Evaluated			Evaluated			Credit-			Evaluated			Evaluated			Credit-
			for			for			Impaired			for			for			Impaired
			Impairment			Impairment						Impairment			Impairment (1)
	Non-owner occupied commercial real estate		$	—		$	1,615		$	3,020		$	877		$	286,685		$	488,171
	Other commercial construction and land			—			1,201			7,016			—			67,789			232,705
	Multifamily commercial real estate			—			116			204			—			29,187			38,501
	1-4 family residential construction and land			—			1,065			493			—			56,979			14,372
	Total commercial real estate			—			3,997			10,733			877			440,640			773,749
	Owner occupied commercial real estate			—			2,611			1,839			4,844			686,409			366,895
	Commercial and industrial loans			507			6,370			1,433			9,623			654,296			139,817
	Lease financing			—			3			—			—			2,676			—
	Total commercial			507			8,984			3,272			14,467			1,343,381			506,712
	1-4 family residential			—			2,279			19,445			—			377,668			418,642
	Home equity loans			—			398			3,471			—			270,170			116,196
	Other consumer loans			5			2,313			364			207			157,784			12,535
	Total consumer			5			4,990			23,280			207			805,622			547,373
	Other			—			468			615			273			61,006			49,710
	Total loans		$	512		$	18,439		$	37,900		$	15,824		$	2,650,649		$	1,877,544
	-1	Loans collectively evaluated for impairment include $435.0 million of acquired loans which are presented net of unamortized purchase discounts of $14.7 million.

FDIC_Indemnification_Asset_Tab

FDIC Indemnification Asset (Tables)	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Schedule of FDIC Indemnification Asset	'
	The following is a summary of the activity in the FDIC indemnification asset:
	(Dollars in thousands)
	Balance, December 31, 2013	$	33,610
	Indemnification asset income		423
	Amortization of indemnification asset		(4,652	)
	Cash received on reimbursable losses		(3,852	)
	Balance, June 30, 2014	$	25,529
	Balance, December 31, 2012	$	49,417
	Indemnification asset income		492
	Amortization of indemnification asset		(3,769	)
	Cash received on reimbursable losses		(7,410	)
	Balance, June 30, 2013	$	38,730

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	6 Months Ended
	Jun. 30, 2014
Banking And Thrift [Abstract]	'
Other Real Estate Owned	'
		Three Months Ended						Six Months Ended
	The activity within Other Real Estate Owned (“OREO”) for the three and six months ended June 30, 2014 and 2013 is presented in the table below.
	(Dollars in thousands)
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Balance, beginning of period	$	120,270		$	151,613		$	129,396		$	154,093
	Real estate acquired from borrowers		8,159			24,131			17,864			42,822
	Valuation allowance		(3,022	)		(6,209	)		(6,595	)		(12,799	)
	Properties sold and other		(29,124	)		(26,743	)		(44,382	)		(41,324	)
	Balance, end of period	$	96,283		$	142,792		$	96,283		$	142,792

Federal_Home_Loan_Bank_Advance1

Federal Home Loan Bank Advances and Short-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Federal Home Loan Bank Advance Owed	'
	The advances as of June 30, 2014 and December 31, 2013 consisted of the following:
	(Dollars in thousands)
	Contractual		Maturity Date	Fixed
	Outstanding			Contractual
	Amount			Rate
	June 30, 2014
	$	50,000	July 23, 2014	0.19%
		70,000	30-Jul-14	0.20%
		40,000	May 19, 2015	0.36%
		651	November 6, 2017	0.50%
		534	10-Feb-26	0.00%
	$	161,185
	(Dollars in thousands)
	Contractual		Maturity Date	Fixed
	Outstanding			Contractual
	Amount			Rate
	December 31, 2013
	$	95,000	16-May-14	0.36%
		724	6-Nov-17	0.50%
		554	10-Feb-26	0.00%
	$	96,278

Long_Term_Borrowings_Tables

Long Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of Outstanding Structured Repurchase Agreements	'
	The repurchase agreements as of June 30, 2014 and December 31, 2013 consisted of the following:
	(Dollars in thousands)
	June 30, 2014				December 31, 2013				Contractual Amount				Maturity Date	Contractual
	Carrying Amount				Carrying Amount									Rate
	$	10,683			$	10,823			$	10,000			November 6, 2016	4.75%
		10,709				10,833				10,000			March 30, 2017	4.50%
		10,458				10,521				10,000			December 18, 2017	3.79%
		10,433				10,492				10,000			December 18, 2017	3.72%
		10,710				10,780				10,000			March 22, 2019	3.56%
	$	52,993			$	53,449			$	50,000
Summary of Subordinated Debentures	'
	(Dollars in thousands)
	Date of Offering		Original				Carrying Amount				Carrying Amount			Interest Rate as of June 30, 2014		Maturity Date
			Face				June 30, 2014				December 31, 2013
			Amount
	July 31, 2001		$	5,000			$	3,875			$	3,851			3.80% (3 Month LIBOR+358 bps)	31-Jul-31
	July 31, 2001			4,000				2,667				2,636			3.80% (3 Month LIBOR+358 bps)	31-Jul-31
	June 26, 2003			10,000				5,968				5,921			3.33% (3 Month LIBOR+310 bps)	26-Jun-33
	September 25, 2003			10,000				6,441				6,368			3.08% (3 Month LIBOR+285 bps)	September 25, 2033
	December 30, 2003			10,000				5,752				5,704			3.08% (3 Month LIBOR+285 bps)	30-Dec-33
	June 28, 2005			3,000				1,570				1,545			1.91% (3 Month LIBOR+168 bps)	28-Jun-35
	December 22, 2005			10,000				4,548				4,491			1.63% (3 Month LIBOR+140 bps)	15-Mar-36
	December 28, 2005			13,000				6,562				6,458			1.77% (3 Month LIBOR+154 bps)	15-Mar-36
	June 23, 2006			20,000				11,346				11,206			1.78% (3 Month LIBOR+155 bps)	7-Jul-36
	May 16, 2007			56,000				28,474				28,050			1.88% (3 Month LIBOR+165 bps)	15-Jun-37
	June 15, 2007			10,000				5,375				5,327			1.66% (3 Month LIBOR+143 bps)	6-Sep-37
			$	151,000			$	82,578			$	81,557
Schedule of Maturities of Long-Term Borrowings	'
	At June 30, 2014, the maturities of long-term borrowings were as follows:
	(Dollars in thousands)		Fixed Rate				Floating Rate				Total
	Due in 2014 through 2015		$	—			$	—			$	—
	Due in 2016			10,683				—				10,683
	Due in 2017			31,600				—				31,600
	Due in 2018			—				—				—
	Thereafter			14,255				82,578				96,833
	Total		$	56,538			$	82,578			$	139,116

Shareholders_Equity_and_Minimu1

Shareholders' Equity and Minimum Regulatory Capital Requirements (Tables)	6 Months Ended
	Jun. 30, 2014
Banking And Thrift [Abstract]	'
Minimum Ratios Along with the Actual Ratios for the Company and the Bank	'
	These minimum ratios along with the actual ratios for the Company and the Bank are presented in the following tables:
	(Dollars in thousands)	Well Capitalized		Adequately Capitalized		Actual
		Requirement		Requirement
	June 30, 2014	Amount	Ratio	Amount	Ratio	Amount		Ratio
	Tier 1 Capital
	(to Average Assets)
	CBF Consolidated	N/A	N/A	³ $251,319	³ 4.0%	$	917,990	14.60%
	Capital Bank, N.A.	³ $313,810	³ 5.0%	³ $251,048	³ 4.0%	$	887,652	14.10%
	Tier 1 Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $197,728	³ 4.0%	$	917,990	18.60%
	Capital Bank, N.A.	³ $296,245	³ 6.0%	³ $197,497	³ 4.0%	$	887,652	18.00%
	Total Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $395,456	³ 8.0%	$	977,260	19.80%
	Capital Bank, N.A.	³ $493,742	³ 10.0%	³ $394,994	³ 8.0%	$	946,771	19.20%
	(Dollars in thousands)	Well Capitalized		Adequately Capitalized		Actual
		Requirement		Requirement
	December 31, 2013	Amount	Ratio	Amount	Ratio	Amount		Ratio
	Tier 1 Capital
	(to Average Assets)
	CBF Consolidated	N/A	N/A	³ $254,126	³ 4.0%	$	949,619	14.90%
	Capital Bank, N.A.	³ $317,562	³ 5.0%	³ $254,050	³ 4.0%	$	849,520	13.40%
	Tier 1 Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $192,428	³ 4.0%	$	949,619	19.70%
	Capital Bank, N.A.	³ $288,410	³ 6.0%	³ $192,273	³ 4.0%	$	849,520	17.70%
	Total Capital
	(to Risk Weighted Assets)
	CBF Consolidated	N/A	N/A	³ $384,856	³ 8.0%	$	1,010,422	21.00%
	Capital Bank, N.A.	³ $480,683	³ 10.0%	³ $384,546	³ 8.0%	$	910,162	18.90%

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Summary of Components and Classification of Stock-Based Compensation Expense	'
	The following table summarizes the components and classification of stock-based compensation expense for the three and six months ended June 30, 2014 and 2013.
	(Dollars in thousands)	Three Months Ended					Six Months Ended
		June 30, 2014			June 30, 2013		June 30, 2014			June 30, 2013
	Stock options	$	171		$	96	$	366		$	179
	Restricted stock		849			1,268		1,382			2,762
	Total stock-based compensation expense	$	1,020		$	1,364	$	1,748		$	2,941
Summary of Weighted Average Assumptions to Compute the Grant-Date Fair Value of Options	'
	The following table summarizes the weighted average assumptions used to compute the grant-date fair value of options granted during the three and six months ended June 30, 2013:
		Three and
		Six Months Ended
		June 30, 2013
	Dividend yield	0.00%
	Risk-free interest rate	1.02%
	Expected option life	5.75 years
	Volatility	37.00%
	Weighted average grant-date fair value of options granted	$6.52
Summary of Stock Option Activity	'
	A summary of the stock option activity for the six months ended June 30, 2014 and 2013 is as follows:
		Six Months Ended
		June 30, 2014					June 30, 2013
	(Shares in thousands)	Shares			Weighted		Shares			Weighted
					Average					Average
					Exercise					Exercise
					Price Per					Price Per
					Share					Share
	Balance, January 1,		3,123		$	20.5		2,890		$	21.39
	Granted		—			—		264			18
	Excercised		—			—		—			—
	Expired or Forfeited		(9	)		59.6		(8	)		182.1
	Balance, June 30,		3,114		$	20.39		3,146		$	20.7
Summary of Options Outstanding	'
	Options outstanding at June 30, 2014 were as follows:
	(Shares in thousands)	Outstanding Options								Excercisable Options
	Range of Exercise Prices	Shares			Weighted		Weighted			Shares		Weighted
					Average		Average					Average
					Remaining		Exercise Price					Exercise Price
					Contractual		Per					Per
					Life		Share					Share
	$18.00		236			8.89 years	$	18			118	$	18
	$20.00		2,864			5.93 years		20			2,864		20
	$28.44 - $2,026.00		14			3.27 years		138.87			14		138.87
	$18.00 - $2,026.00		3,114			6.15 years	$	20.39			2,996	$	20.39
	Options outstanding at June 30, 2013 were as follows:
	(Shares in thousands)	Outstanding Options								Excercisable Options
	Range of Exercise Prices	Shares			Weighted		Weighted			Shares		Weighted
					Average		Average					Average
					Remaining		Exercise Price					Exercise Price
					Contractual		Per					Per
					Life		Share					Share
	$18.00		264			9.89 years	$	18			—	$	—
	$20.00		2,864			6.93 years		20			2,864		20
	$28.44 - $2,026.00		18			3.65 years		171.04			17		176.99
	$18.00 - $2,026.00		3,146			7.16 years	$	20.7			2,881	$	20.94
Summary of Unvested Restricted Stock Awards	'
	The following table summarizes unvested restricted stock activity for the six months ended June 30, 2014 and 2013:
		Six Months Ended
		June 30, 2014					June 30, 2013
	(Shares in thousands)	Shares			Weighted		Shares			Weighted
					Average					Average
					Grant-Date					Grant-Date
					Fair Value					Fair Value
					Per Share					Per Share
	Balance, January 1,		1,215		$	14.28		1,212		$	14.27
	Granted		—			—		4			18
	Vested or released		(405	)		15.07		—			—
	Expired or forfeited		—			—		—			—
	Balance, June 30,		810		$	13.89		1,216		$	14.28

Income_Taxes_Tables

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Reconciliation of Income Tax Computed at Applicable Federal Statutory Income Tax Rates to Total Income Taxes	'
	A reconciliation of income tax computed at applicable Federal statutory income tax rates to total income tax expense reported is as follows for the three and six months ended June 30, 2014 and 2013:
	(Dollars in thousands)	Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
	Income before income taxes	$	20,041		$	15,009		$	38,663		$	26,317
	Income taxes computed at Federal statutory tax rate		7,014			5,253			13,532			9,211
	Effect of:
	State taxes (net of federal benefit)		738			588			1,483			1,032
	Tax-exempt interest income, net		(158	)		(170	)		(333	)		(340	)
	Contingent value right expense		114			150			383			1159
	Other, net		(92	)		(241	)		(241	)		61
	Total income tax expense	$	7,616		$	5,580		$	14,824		$	11,123

Fair_Value_Tables

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2014
Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	Assets and liabilities measured at fair value on a recurring basis are summarized below as of June 30, 2014:
	(Dollars in thousands)					Fair Value Measurement Using:
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical			Inputs			(Level 3)
						Assets			(Level 2)
						(Level 1)
	Assets
	Trading securities		$	6,515		$	4,250		$	2,265		$	—
	Available-for-sale securities:
	Mortgage-backed securities—residential			590,060			—			590,060			—
	Industrial revenue bonds			3,736			—			—			3,736
	Marketable equity securities			949			—			949			—
	Available-for-sale securities		$	594,745		$	—		$	591,009		$	3,736
	Gross asset value of derivatives		$	5		$	—		$	5		$	—
	Liabilities
	Gross liability value of derivatives		$	211		$	—		$	211		$	—
	There were no transfers of assets and liabilities between levels of the fair value hierarchy during the three and six months ended June 30, 2014.
	Assets and liabilities measured at fair value on a recurring basis are summarized below as of December 31, 2013:
	(Dollars in thousands)					Fair Value Measurement Using:
			Total			Quoted Prices			Significant			Significant
						in Active			Other			Unobservable
						Markets for			Observable			Inputs
						Identical			Inputs			(Level 3)
						Assets			(Level 2)
						(Level 1)
	Assets
	Trading securities		$	6,348		$	4,477		$	1,871	(1)	$	—
	Available-for-sale securities:
	Asset-backed securities			133,225			—			133,225			—
	Mortgage-backed securities-residential			546,626			—			546,626			—
	Industrial revenue bonds			3,859			—			—			3,859
	Marketable equity securities			931			—			931	(1)		—
	Collateralized debt obligations			800			—			800			—
	Available-for-sale securities		$	685,441		$	—		$	681,582		$	3,859
	Gross asset value of derivatives		$	15		$	—		$	15		$	—
	Liabilities
	Gross liability value of derivatives		$	1,330		$	—		$	1,330		$	—
		-1	Transferred from Level 1 to Level 2 due to limited observable market data.
Fair Value Measurements on Recurring Basis Using Significant Unobservable Inputs (Level 3)	'
	The tables below present the activity and income statement classifications of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and six months ended and held at June 30, 2014:
	(Dollars in thousands)		Fair Value Measurement Using
			Significant Unobservable
			Inputs (Level 3)
			Industrial
			Revenue Bonds
	Beginning balance, March 31, 2014		$	3,727
	Included in other comprehensive income			9
	Ending balance, June 30, 2014		$	3,736
	(Dollars in thousands)		Fair Value Measurement Using
			Significant Unobservable
			Inputs (Level 3)
			Industrial
			Revenue Bonds
	Beginning balance, January 1, 2014		$	3,859
	Principal reduction			(170	)
	Included in other comprehensive income			47
	Ending balance, June 30, 2014		$	3,736
	The tables below present the activity and income statement classifications of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and six months ended and held at June 30, 2013:
	(Dollars in thousands)		Fair Value Measurement Using Significant
			Unobservable Inputs (Level 3)
			Corporate Bonds			Industrial			Collateralized
						Revenue			Debt
						Bonds			Obligations
	Beginning balance, March 31, 2013		$	26		$	3,857		$	307
	Included in earnings-gain on sales			199			—			—
	Included in other comprehensive income			—			15			(6	)
	Sales			(225	)		—			—
	Ending balance, June 30, 2013		$	—		$	3,872		$	301
	(Dollars in thousands)		Fair Value Measurement Using Significant
			Unobservable Inputs (Level 3)
			Corporate Bonds			Industrial			Collateralized
						Revenue			Debt
						Bonds			Obligations
	Beginning balance, January 1, 2013		$	26		$	3,800		$	297
	Included in earnings-gain on sales			199			—			—
	Included in other comprehensive income			—			72			4
	Sales			(225	)		—			—
	Ending balance, June 30, 2013		$	—		$	3,872		$	301
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis	'
	Assets and liabilities measured at fair value on a nonrecurring basis are summarized below as of June 30, 2014:
	(Dollars in thousands)		Fair Value Measurement Using:
			Quoted Prices in			Significant			Significant
			Active Markets			Other			Unobservable
			for Identical			Observable			Inputs
			Assets			Inputs			(Level 3)
			(Level 1)			(Level 2)
	Assets
	Other real estate owned		$	—		$	—		$	83,761
	Other repossesed assets			—			107			—
	Impaired loans			—			—			790
	Other real estate owned measured at fair value as of June 30, 2014 had a carrying amount of $104.1 million, less valuation allowances totaling $20.4 million. Other repossessed assets are primarily comprised of repossessed vehicles and equipment and are measured at fair value as of the date of repossession.
	Assets and liabilities measured at fair value on a nonrecurring basis are summarized below as of December 31, 2013:
	(Dollars in thousands)		Fair Value Measurement Using:
			Quoted Prices in			Significant			Significant
			Active Markets			Other			Unobservable
			for Identical			Observable			Inputs
			Assets			Inputs			(Level 3)
			(Level 1)			(Level 2)
	Assets
	Other real estate owned		$	—		$	—		$	118,579
	Other repossesed assets			—			108			—
	Impaired loans			—			—			1,332
Carrying Amounts and Estimated Fair Values of Financial Instruments	'
	Carrying amount and estimated fair values of financial instruments were as follows:
	(Dollars in thousands)		Fair Value Measurement
	June 30, 2014		Carrying Value			Estimated			Level 1			Level 2		Level 3
						Fair Value
	Financial Assets
	Cash and cash equivalents		$	141,033		$	141,033		$	141,033		$	—	$	—
	Trading securities			6,515			6,515			4,250			2,265		—
	Investment securities available-for-sale			594,745			594,745			—			591,009		3,736
	Investment securities held-to-maturity			475,167			480,971			—			480,971		—
	Loans, net			4,666,868			4,850,557			—			9,926		4,840,631
	FDIC indemnification asset			25,529			25,529			—			—		25,529
	Receivable from FDIC			4,578			4,578			—			4,578		—
	Other (1)			44,873			44,873			—			—		44,873
	Gross asset value of derivatives			5			5			—			5		—
	Total financial assets		$	5,959,313		$	6,148,806		$	145,283		$	1,088,754	$	4,914,769
	Financial Liabilities
	Noncontractual deposits		$	3,801,729		$	3,801,729		$	—		$	—	$	3,801,729
	Contractual deposits			1,359,727			1,356,923			—			—		1,356,923
	Federal Home Loan Bank advances			161,185			161,124			—			161,124		—
	Short-term borrowings			32,814			32,814			—			32,814		—
	Long-term borrowings			52,993			55,178			—			—		55,178
	Subordinated debentures			86,123			96,786			—			—		96,786
	Gross liability value of derivatives			211			211			—			211		—
	Total financial liabilities		$	5,494,782		$	5,504,765		$	—		$	194,149	$	5,310,616
	(Dollars in thousands)		Fair Value Measurement
	December 31, 2013		Carrying Value			Estimated			Level 1			Level 2		Level 3
						Fair Value
	Financial Assets
	Cash and cash equivalents		$	164,441		$	164,441		$	164,441		$	—	$	—
	Trading securities			6,348			6,348			4,477			1,871		—
	Investment securities available-for-sale			685,441			685,441			—			681,582		3,859
	Investment securities held-to-maturity			465,098			459,693			—			459,693		—
	Loans, net			4,495,178			4,681,554			—			8,012		4,673,542
	FDIC indemnification asset			33,610			33,610			—			—		33,610
	Receivable from FDIC			7,624			7,624			—			7,624		—
	Other (1)			44,088			44,088			—			—		44,088
	Gross asset value of derivatives			15			15			—			15		—
	Total financial assets		$	5,901,843		$	6,082,814		$	168,918		$	1,158,797	$	4,755,099
	Financial Liabilities
	Noncontractual deposits		$	3,737,566		$	3,737,566		$	—		$	—	$	3,737,566
	Contractual deposits			1,447,497			1,448,032			—			—		1,448,032
	Federal Home Loan Bank advances			96,278			96,241			—			96,241		—
	Short-term borrowings			24,850			24,850			—			24,850		—
	Long-term borrowings			53,449			55,861			—			—		55,861
	Subordinated debentures			85,112			100,795			—			—		100,795
	Gross liability value of derivatives			1,330			1,330			—			1,330		—
	Total financial liabilities		$	5,446,082		$	5,464,675		$	—		$	122,421	$	5,342,254
	-1	Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stock.
Fair Value on Recurring Basis [Member]	'
Quantitative Information About Fair Value Measurements	'
	Quantitative Information about Recurring Level 3 Fair Value Measurements
	(Dollars in thousands)		Fair Value at			Valuation Technique			Significant		Range
			June 30, 2014						Unobservable
									Input
	Industrial revenue bonds		$	3,736			Discounted cash flow		Discount rate		3.50%
									Illiquidity factor		0.50%
	(Dollars in thousands)		Fair Value at			Valuation Technique			Significant		Range
			December 31, 2013						Unobservable
									Input
	Industrial revenue bonds		$	3,859			Discounted cash flow		Discount rate		3.7%-3.9%
									Illiquidity factor		0.50%
Fair Value on Nonrecurring Basis [Member]	'
Quantitative Information About Fair Value Measurements	'
	Quantitative Information about Nonrecurring Level 3 Fair Value Measurements
	(Dollars in thousands)		Fair Value at			Valuation Technique		Significant Unobservable Input	Range
			June 30, 2014
	Other real estate owned		$	83,761		Fair value of property		Appraised value less cost to sell	6%-10%
	Impaired loans			790		Fair value of collateral		Appraised value less cost to sell	6%-8%
	(Dollars in thousands)		Fair Value at			Valuation Technique		Significant Unobservable Input	Range
			December 31, 2013
	Other real estate owned		$	118,579		Fair value of property		Appraised value less cost to sell	7%-10%
	Impaired loans			1,332		Fair value of collateral		Appraised value less cost to sell	8%

Derivative_Instruments_Tables

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Summary of Derivative Instrument Contracts Fair Value and Notional Amount	'
	The Company’s derivative instrument contracts which are recorded in other assets and other liabilities on the Company’s balance sheets consist of the following:
	(Dollars in thousands)	June 30, 2014				December 31, 2013
		Fair Value		Notional		Fair Value		Notional
				Amount				Amount
	Assets
	Interest rate cap contracts (matured in 2014)	$	—	$	—	$	—	$	12,500
	Forward loan sales contracts (maturing in 2014)		5		2,613		15		4,215
	Total assets	$	5	$	2,613	$	15	$	16,715
	Liabilities
	Interest rate swaps associated with certificates of deposits (maturing in 2040)	$	162	$	25,000	$	1,320	$	25,000
	Forward loan sales contracts (maturing in 2014)		49		10,723		10		3,545
	Total liabilities	$	211	$	35,723	$	1,330	$	28,545

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail) (USD $)	6 Months Ended				1 Months Ended
In Thousands, unless otherwise specified	Jun. 03, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Sep. 30, 2012
	Office			Prior Period Adjustment [Member]	Minority Common Shares To Class A Common Stock [Member]
					Capital Bank Corporation [Member]
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Total number of full service banking offices	162	'	'	'	'
Outstanding common shares converted into CBF's Class A common stock	'	'	'	'	3,700
Goodwill	'	$134,522	$131,987	$2,500	'

Earnings_Per_Common_Share_Comp

Earnings Per Common Share - Computation of Earnings Per Share (Detail)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Weighted average number of shares outstanding:	'	'	'	'
Basic	49,090	53,108	49,800	53,865
Diluted	50,261	54,062	51,092	54,777
Stock Options [Member]	'	'	'	'
Weighted average number of shares outstanding:	'	'	'	'
Dilutive effect	527	'	486	'
Restricted Stock Awards [Member]	'	'	'	'
Weighted average number of shares outstanding:	'	'	'	'
Dilutive effect	644	954	806	912

Earnings_Per_Common_Share_Weig

Earnings Per Common Share - Weighted Average Anti-Dilutive Stock Options and Unvested Restricted Shares Excluded from the Computation of Diluted Earnings Per Share (Detail) (Stock Options [Member])	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stock Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive	14	3,000	14	2,942

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
	Securities		Securities
Investments Debt And Equity Securities [Abstract]	'	'	'	'	'
Trading securities	$6,515,000	'	$6,515,000	'	$6,348,000
Proceeds from sales and calls of securities available for sale	149,500,000	200,000	150,300,000	1,200,000	'
Gross gains realized on sales and calls	800,000	200,000	1,100,000	200,000	'
Gross losses realized on sales and calls	800,000	'	800,000	'	'
Securities in portfolio	132	'	132	'	'
Securities in portfolio in an unrealized loss position	21	'	21	'	'
Investment securities, carrying values	$305,300,000	'	$305,300,000	'	$313,500,000

Investment_Securities_Amortize

Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$591,668	$688,717
Unrealized Gains	4,124	3,104
Unrealized Losses	1,047	6,380
Estimated Fair Value	594,745	685,441
Amortized Cost	475,167	465,098
Unrealized Gains	5,808	355
Unrealized Losses	4	5,760
Estimated Fair Value	480,971	459,693
U.S. Government Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	14,567	14,972
Unrealized Gains	2	'
Unrealized Losses	4	401
Estimated Fair Value	14,565	14,571
US States and Political Subdivisions [Member] | State and Political Subdivisions-Tax Exempt [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	13,599	14,201
Unrealized Gains	433	27
Unrealized Losses	'	129
Estimated Fair Value	14,032	14,099
US States and Political Subdivisions [Member] | State and Political Subdivisions-Taxable [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	541	545
Unrealized Gains	20	'
Unrealized Losses	'	12
Estimated Fair Value	561	533
Mortgage-Backed Securities-Residential Issued by Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	587,142	549,869
Unrealized Gains	3,965	2,337
Unrealized Losses	1,047	5,580
Estimated Fair Value	590,060	546,626
Amortized Cost	421,460	435,380
Unrealized Gains	5,353	328
Unrealized Losses	'	5,218
Estimated Fair Value	426,813	430,490
Asset-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	133,647
Unrealized Gains	'	363
Unrealized Losses	'	785
Estimated Fair Value	'	133,225
Marketable Equity Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	946	946
Unrealized Gains	3	'
Unrealized Losses	'	15
Estimated Fair Value	949	931
Industrial Revenue Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	3,580	3,750
Unrealized Gains	156	109
Estimated Fair Value	3,736	3,859
Collateralized Debt Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	'	505
Unrealized Gains	'	295
Estimated Fair Value	'	800
Corporate Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	25,000	'
Estimated Fair Value	$25,000	'

Investment_Securities_Estimate

Investment Securities - Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity by Contractual Maturity (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule Of Marketable Securities [Line Items]	'	'
Amortized Cost	$591,668	$688,717
Available for sale securities	594,745	685,441
Available for sale securities to yield	'	'
Due in one year or less	205	'
Due after one year through five years	919	'
Due after five years through ten years	34,991	'
Due after ten years	17,592	'
Total, amortized cost	475,167	465,098
Due in one year or less	205	'
Due after one year through five years	934	'
Due after five years through ten years	35,258	'
Due after ten years	17,761	'
Total, estimated fair value	480,971	459,693
Due in one year or less	0.76%	'
Due after one year through five years	2.30%	'
Due after five years through ten years	4.59%	'
Due after ten years	3.04%	'
Total	2.58%	'
Mortgage-Backed Securities-Residential Issued by Government Sponsored Entities [Member]	'	'
Schedule Of Marketable Securities [Line Items]	'	'
Mortgage-backed securities residential, Amortized Cost	587,142	'
Amortized Cost	587,142	549,869
Mortgage-backed securities-residential	590,060	'
Available for sale securities	590,060	546,626
Mortgage-backed securities-residential, Yield	1.80%	'
Total, amortized cost	421,460	'
Total, estimated fair value	426,813	430,490
Mortgage-backed securities-residential issued by government sponsored entities	2.39%	'
Debt Securities [Member]	'	'
Schedule Of Marketable Securities [Line Items]	'	'
Due in one year or less, Amortized Cost	'	'
Due after one year through five years, Amortized Cost	'	'
Due after five years through ten years, Amortized Cost	'	'
Due after ten years, Amortized Cost	3,580	'
Available-for-sale debt securities, Amortized Cost	590,722	'
Due in one year or less, Estimated Fair Value	'	'
Due after one year through five years, Estimated Fair Value	'	'
Due after five years through ten years, Estimated Fair Value	'	'
Due after ten years, Estimated Fair Value	3,736	'
Estimated Fair Value, Gross	593,796	'
Due in one year or less, Yield	'	'
Due after one year through five years, Yield	'	'
Due after five years through ten years, Yield	'	'
Due after ten years, Yield	2.23%	'
Available for sale securities-Debt securities to yield	1.80%	'
Marketable Equity Securities [Member]	'	'
Schedule Of Marketable Securities [Line Items]	'	'
Available-for-sale equity securities, Amortized Cost	946	'
Amortized Cost	946	946
Available for sale securities	$949	$931
Available for sale securities to yield	'	'

Investment_Securities_Securiti

Investment Securities - Securities with Unrealized Losses Not Recognized in Income (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Available-for-sale	$193,239	$443,331
Unrealized Losses, Less than 12 Months, Available-for-sale	820	6,380
Estimated Fair Value, 12 Months or Longer, Available-for-sale	47,426	'
Unrealized Losses,12 Months or Longer, Available-for-sale	227	'
Total, Estimated Fair Value, Available-for-sale	240,665	443,331
Total, Unrealized Losses, Available-for-sale	1,047	6,380
Estimated Fair Value, Less than 12 Months, Held-to-maturity	7,662	367,926
Unrealized Losses, Less than 12 Months, Held-to-maturity	4	5,760
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	'	'
Unrealized Losses, 12 Months or Longer, Held-to-maturity	'	'
Total, Estimated Fair Value, Held-to-maturity	7,662	367,926
Total, Unrealized Losses, Held-to-maturity	4	5,760
Asset-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Available-for-sale	'	102,835
Unrealized Losses, Less than 12 Months, Available-for-sale	'	785
Total, Estimated Fair Value, Available-for-sale	'	102,835
Total, Unrealized Losses, Available-for-sale	'	785
Marketable Equity Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Available-for-sale	'	931
Unrealized Losses, Less than 12 Months, Available-for-sale	'	15
Total, Estimated Fair Value, Available-for-sale	'	931
Total, Unrealized Losses, Available-for-sale	'	15
Mortgage-Backed Securities-Residential Issued by Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Available-for-sale	193,239	339,565
Unrealized Losses, Less than 12 Months, Available-for-sale	820	5,580
Estimated Fair Value, 12 Months or Longer, Available-for-sale	47,426	'
Unrealized Losses,12 Months or Longer, Available-for-sale	227	'
Total, Estimated Fair Value, Available-for-sale	240,665	339,565
Total, Unrealized Losses, Available-for-sale	1,047	5,580
Estimated Fair Value, Less than 12 Months, Held-to-maturity	'	342,333
Unrealized Losses, Less than 12 Months, Held-to-maturity	'	5,218
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	'	'
Unrealized Losses, 12 Months or Longer, Held-to-maturity	'	'
Total, Estimated Fair Value, Held-to-maturity	'	342,333
Total, Unrealized Losses, Held-to-maturity	'	5,218
U.S. Government Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Held-to-maturity	7,662	14,571
Unrealized Losses, Less than 12 Months, Held-to-maturity	4	401
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	'	'
Unrealized Losses, 12 Months or Longer, Held-to-maturity	'	'
Total, Estimated Fair Value, Held-to-maturity	7,662	14,571
Total, Unrealized Losses, Held-to-maturity	4	401
US States and Political Subdivisions [Member] | State and Political Subdivisions-Tax Exempt [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Held-to-maturity	'	10,489
Unrealized Losses, Less than 12 Months, Held-to-maturity	'	129
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	'	'
Unrealized Losses, 12 Months or Longer, Held-to-maturity	'	'
Total, Estimated Fair Value, Held-to-maturity	'	10,489
Total, Unrealized Losses, Held-to-maturity	'	129
US States and Political Subdivisions [Member] | State and Political Subdivisions-Taxable [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Estimated Fair Value, Less than 12 Months, Held-to-maturity	'	533
Unrealized Losses, Less than 12 Months, Held-to-maturity	'	12
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	'	'
Unrealized Losses, 12 Months or Longer, Held-to-maturity	'	'
Total, Estimated Fair Value, Held-to-maturity	'	533
Total, Unrealized Losses, Held-to-maturity	'	$12

Loans_Major_Classifications_of

Loans - Major Classifications of Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	$4,722,175	$4,552,029
Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,180,357	1,215,266
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	793,733	775,733
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	243,671	300,494
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	62,793	67,688
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	80,160	71,351
Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,975,679	1,864,560
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,040,533	1,058,148
Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	932,800	803,736
Total Commercial [Member] | Lease Financing [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	2,346	2,676
Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,458,303	1,361,214
Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	863,897	804,322
Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	380,767	386,366
Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	213,639	170,526
Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	$107,836	$110,989

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
1-4 family residential loans	$9,926,000	'	$9,926,000	'	$8,012,000
Deferred loan origination costs	6,800,000	'	6,800,000	'	3,800,000
Total loans	4,722,175,000	'	4,722,175,000	'	4,552,029,000
CVR expense	327,000	428,000	1,094,000	3,311,000	'
Southern Community and Green Bankshares [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
CVR expense	300,000	400,000	1,100,000	3,300,000	'
Total Commercial [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Total loans	1,975,679,000	'	1,975,679,000	'	1,864,560,000
Total Commercial [Member] | Minimum [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Analysis of loans individually by classification of credit risk	'	'	'The Company analyzes loans individually by classifying the loans as to credit risk. This analysis is performed at origination and upon identification of a material change for all loans, on an annual basis for commercial loans exceeding $0.5 million and at least quarterly for loans not rated Pass.	'	'
Analysis of loans individually by classification of credit risk	500,000	'	500,000	'	'
Other [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Total loans	107,836,000	'	107,836,000	'	110,989,000
Other [Member] | Farm Land [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Total loans	44,800,000	'	44,800,000	'	49,700,000
Other [Member] | State and Political Subdivision Obligations [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Total loans	39,800,000	'	39,800,000	'	36,200,000
Other [Member] | Deposit Customer Overdraft [Member]	'	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Total loans	$1,900,000	'	$1,900,000	'	$2,200,000

Loans_Roll_Forward_of_Accretab

Loans - Roll Forward of Accretable Yield (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accretable Yield	'	'	'	'
Balance at beginning of period	$346,995	$491,237	$383,775	$553,348
Accretion of income	-31,021	-42,023	-64,183	-87,009
Reclassification from nonaccretable difference	29,229	20,826	35,896	31,099
Other	-15,782	-25,559	-26,067	-52,957
Balance at end of period	329,421	444,481	329,421	444,481
Nonaccretable Difference	'	'	'	'
Balance at end of period	$232,776	$358,810	$232,776	$358,810

Loans_Summary_of_Companys_Esti

Loans - Summary of Company's Estimate of Cash Flows for Purchased Credit-Impaired Loans (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'	'	'	'	'
2014	$54,928	'	'	'	'	'
2015	87,936	'	'	'	'	'
2016	61,438	'	'	'	'	'
2017	41,080	'	'	'	'	'
2018	27,909	'	'	'	'	'
Thereafter	56,130	'	'	'	'	'
Total	$329,421	$346,995	$383,775	$444,481	$491,237	$553,348

Loans_Major_Categories_of_Loan

Loans - Major Categories of Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	$4,481,730	$4,266,672
Covered loans	240,445	285,357
Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	1,117,838	1,131,261
Covered loans	62,519	84,005
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	753,220	719,999
Covered loans	40,513	55,734
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	226,498	281,332
Covered loans	17,173	19,162
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	57,960	58,579
Covered loans	4,833	9,109
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	80,160	71,351
Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	1,906,412	1,787,046
Covered loans	69,267	77,514
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	979,885	990,846
Covered loans	60,648	67,302
Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	924,181	793,524
Covered loans	8,619	10,212
Total Commercial [Member] | Lease Financing [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	2,346	2,676
Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	1,350,512	1,239,198
Covered loans	107,791	122,016
Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	803,266	733,723
Covered loans	60,631	70,599
Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	333,672	335,051
Covered loans	47,095	51,315
Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	213,574	170,424
Covered loans	65	102
Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	106,968	109,167
Covered loans	868	1,822
Non-PCI Loans New [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	2,709,261	2,239,455
Non-PCI Loans New [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	442,023	356,534
Non-PCI Loans New [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	295,756	219,482
Non-PCI Loans New [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	62,754	67,537
Non-PCI Loans New [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	17,179	12,537
Non-PCI Loans New [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	66,334	56,978
Non-PCI Loans New [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	1,484,964	1,288,514
Non-PCI Loans New [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	687,303	642,794
Non-PCI Loans New [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	795,315	643,044
Non-PCI Loans New [Member] | Total Commercial [Member] | Lease Financing [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	2,346	2,676
Non-PCI Loans New [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	722,088	537,087
Non-PCI Loans New [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	448,315	332,585
Non-PCI Loans New [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	73,749	52,918
Non-PCI Loans New [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	200,024	151,584
Non-PCI Loans New [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	60,186	57,320
Non-PCI Loans Acquired [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	367,242	397,543
Covered loans	34,667	37,487
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	82,568	84,983
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	68,261	68,080
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	246	252
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	14,061	16,650
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	'	1
Non-PCI Loans Acquired [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	59,317	68,978
Covered loans	195	356
Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	42,236	48,459
Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	17,081	20,519
Covered loans	195	356
Non-PCI Loans Acquired [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	221,618	239,623
Covered loans	34,472	37,131
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	48,126	52,078
Covered loans	1,423	1,017
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	168,109	181,138
Covered loans	33,049	36,114
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	5,383	6,407
Non-PCI Loans Acquired [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	3,739	3,959
PCI Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	1,405,227	1,629,674
Covered loans	205,778	247,870
PCI Loans [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	593,247	689,744
Covered loans	62,519	84,005
PCI Loans [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	389,203	432,437
Covered loans	40,513	55,734
PCI Loans [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	163,498	213,543
Covered loans	17,173	19,162
PCI Loans [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	26,720	29,392
Covered loans	4,833	9,109
PCI Loans [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	13,826	14,372
PCI Loans [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	362,131	429,554
Covered loans	69,072	77,158
PCI Loans [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	250,346	299,593
Covered loans	60,648	67,302
PCI Loans [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	111,785	129,961
Covered loans	8,424	9,856
PCI Loans [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	406,806	462,488
Covered loans	73,319	84,885
PCI Loans [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	306,825	349,060
Covered loans	59,208	69,582
PCI Loans [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	91,814	100,995
Covered loans	14,046	15,201
PCI Loans [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	8,167	12,433
Covered loans	65	102
PCI Loans [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Non-covered loans	43,043	47,888
Covered loans	$868	$1,822

Loans_Aging_of_the_Recorded_In

Loans - Aging of the Recorded Investment in Past Due Loans, Based on Contractual Terms (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	$4,656,942	$4,487,166
Non-PCI Loans Acquired [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	16,033	15,991
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,574	959
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,250	90
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	324	563
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	'	305
Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	'	1
Non-PCI Loans Acquired [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	4,364	5,361
Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	1,663	3,414
Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	2,701	1,947
Non-PCI Loans Acquired [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	10,085	9,671
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	2,060	2,279
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	4,751	4,786
Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	3,274	2,606
Non-PCI Loans Acquired [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	10	'
PCI Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	210,819	271,123
PCI Loans [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	88,120	120,450
PCI Loans [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	37,513	47,791
PCI Loans [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	45,954	68,217
PCI Loans [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	2,308	2,641
PCI Loans [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	2,345	1,801
PCI Loans [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	62,868	77,156
PCI Loans [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	32,203	45,491
PCI Loans [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	30,665	31,665
PCI Loans [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	56,800	67,385
PCI Loans [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	44,986	55,393
PCI Loans [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	11,329	10,332
PCI Loans [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	485	1,660
PCI Loans [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans	3,031	6,132
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	4,329	4,035
Nonaccrual	10,188	10,474
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	10	305
Nonaccrual	1,564	654
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	1,250	90
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	10	'
Nonaccrual	314	563
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	'	305
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	'	1
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	226	22
Nonaccrual	4,072	5,273
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	15	20
Nonaccrual	1,648	3,394
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	211	2
Nonaccrual	2,424	1,879
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	4,093	3,708
Nonaccrual	4,542	4,547
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	359	862
Nonaccrual	1,628	1,417
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	1,188	1,046
Nonaccrual	2,186	2,324
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	2,546	1,800
Nonaccrual	728	806
Non-Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	10	'
Non-Covered Loans [Member] | PCI Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	9,170	16,654
Greater than 90 Days Past Due and Still Accruing/Accreting	171,022	213,379
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	732	2,573
Greater than 90 Days Past Due and Still Accruing/Accreting	73,310	98,633
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	444	1,463
Greater than 90 Days Past Due and Still Accruing/Accreting	32,945	35,563
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	162	1,105
Greater than 90 Days Past Due and Still Accruing/Accreting	36,046	58,633
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Greater than 90 Days Past Due and Still Accruing/Accreting	2,100	2,641
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	126	5
Greater than 90 Days Past Due and Still Accruing/Accreting	2,219	1,796
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	2,984	4,875
Greater than 90 Days Past Due and Still Accruing/Accreting	56,733	63,793
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	2,574	4,626
Greater than 90 Days Past Due and Still Accruing/Accreting	26,661	33,974
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	410	249
Greater than 90 Days Past Due and Still Accruing/Accreting	30,072	29,819
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	5,437	8,773
Greater than 90 Days Past Due and Still Accruing/Accreting	37,965	46,208
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	3,583	6,696
Greater than 90 Days Past Due and Still Accruing/Accreting	32,461	37,646
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	1,599	1,733
Greater than 90 Days Past Due and Still Accruing/Accreting	5,301	7,313
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	255	344
Greater than 90 Days Past Due and Still Accruing/Accreting	203	1,249
Nonaccrual	'	'
Non-Covered Loans [Member] | PCI Loans [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	17	433
Greater than 90 Days Past Due and Still Accruing/Accreting	3,014	4,745
Nonaccrual	'	'
Covered Loans [Member] | Non-PCI Loans Acquired [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	336	146
Nonaccrual	1,180	1,336
Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	66	66
Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	66	66
Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	336	146
Nonaccrual	1,114	1,270
Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	45	'
Nonaccrual	28	'
Covered Loans [Member] | Non-PCI Loans Acquired [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	291	146
Nonaccrual	1,086	1,270
Covered Loans [Member] | PCI Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	894	653
Greater than 90 Days Past Due and Still Accruing/Accreting	29,733	40,437
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	312	107
Greater than 90 Days Past Due and Still Accruing/Accreting	13,766	19,137
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	'	107
Greater than 90 Days Past Due and Still Accruing/Accreting	4,124	10,658
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	312	'
Greater than 90 Days Past Due and Still Accruing/Accreting	9,434	8,479
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Greater than 90 Days Past Due and Still Accruing/Accreting	208	'
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	14	260
Greater than 90 Days Past Due and Still Accruing/Accreting	3,137	8,228
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	13	260
Greater than 90 Days Past Due and Still Accruing/Accreting	2,955	6,631
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	1	'
Greater than 90 Days Past Due and Still Accruing/Accreting	182	1,597
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	568	286
Greater than 90 Days Past Due and Still Accruing/Accreting	12,830	12,118
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	482	227
Greater than 90 Days Past Due and Still Accruing/Accreting	8,460	10,824
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | Home Equity Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
30-89 Days Past Due	86	59
Greater than 90 Days Past Due and Still Accruing/Accreting	4,343	1,227
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Greater than 90 Days Past Due and Still Accruing/Accreting	27	67
Nonaccrual	'	'
Covered Loans [Member] | PCI Loans [Member] | Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Greater than 90 Days Past Due and Still Accruing/Accreting	'	954
Nonaccrual	'	'

Loans_Loans_Excluding_Purchase

Loans - Loans, Excluding Purchased Credit-Impaired Loans by Internal Ratings (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	$3,111,170	$2,674,485
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	3,072,432	2,636,923
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	9,204	7,915
Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	18,166	17,838
Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	11,368	11,809
Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	524,591	441,517
Total Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	517,595	435,203
Total Commercial Real Estate [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,817	2,574
Total Commercial Real Estate [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,615	3,086
Total Commercial Real Estate [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,564	654
Total Commercial Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	364,017	287,562
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	361,677	285,919
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	122	568
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	968	985
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,250	90
Total Commercial Real Estate [Member] | Non-Owner Occupied Commercial Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	63,000	67,789
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	62,274	67,178
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	412	48
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	314	563
Total Commercial Real Estate [Member] | Other Commercial Construction and Land [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	31,240	29,187
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	31,240	28,882
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	305
Total Commercial Real Estate [Member] | Multifamily Commercial Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	66,334	56,979
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	62,404	53,224
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,283	1,958
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,647	1,796
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	1
Total Commercial Real Estate [Member] | 1-4 Family Residential Construction and Land [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,544,476	1,357,848
Total Commercial [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,520,814	1,335,832
Total Commercial [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	5,799	5,276
Total Commercial [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	13,725	11,401
Total Commercial [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	4,138	5,339
Total Commercial [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	729,539	691,253
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	714,139	681,571
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	5,425	4,093
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	8,327	2,195
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,648	3,394
Total Commercial [Member] | Owner Occupied Commercial Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial [Member] | Commercial and Industrial Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	812,591	663,919
Total Commercial [Member] | Commercial and Industrial Loans [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	804,329	651,585
Total Commercial [Member] | Commercial and Industrial Loans [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	374	1,183
Total Commercial [Member] | Commercial and Industrial Loans [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	5,398	9,206
Total Commercial [Member] | Commercial and Industrial Loans [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,490	1,945
Total Commercial [Member] | Commercial and Industrial Loans [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Commercial [Member] | Lease Financing [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,346	2,676
Total Commercial [Member] | Lease Financing [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	2,346	2,676
Total Commercial [Member] | Lease Financing [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	978,178	813,841
Total Consumer [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	970,370	804,882
Total Consumer [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	588	65
Total Consumer [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,564	3,078
Total Consumer [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	5,656	5,816
Total Consumer [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Consumer [Member] | 1-4 Family Residential [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	497,864	385,680
Total Consumer [Member] | 1-4 Family Residential [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	496,054	384,235
Total Consumer [Member] | 1-4 Family Residential [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	154	28
Total Consumer [Member] | 1-4 Family Residential [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,656	1,417
Total Consumer [Member] | 1-4 Family Residential [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Consumer [Member] | Home Equity Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	274,907	270,170
Total Consumer [Member] | Home Equity Loans [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	269,656	263,490
Total Consumer [Member] | Home Equity Loans [Member] | Special Mention [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	434	37
Total Consumer [Member] | Home Equity Loans [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	1,545	3,050
Total Consumer [Member] | Home Equity Loans [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	3,272	3,593
Total Consumer [Member] | Home Equity Loans [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Total Consumer [Member] | Other Consumer Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	205,407	157,991
Total Consumer [Member] | Other Consumer Loans [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	204,660	157,157
Total Consumer [Member] | Other Consumer Loans [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	19	28
Total Consumer [Member] | Other Consumer Loans [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	728	806
Total Consumer [Member] | Other Consumer Loans [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'
Other [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	63,925	61,279
Other [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	63,653	61,006
Other [Member] | Substandard Accruing/Accreting [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	262	273
Other [Member] | Substandard Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	10	'
Other [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total	'	'

Allowance_for_Loan_Losses_Allo

Allowance for Loan Losses - Allowance for Loan Losses (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Allowance For Loan And Lease Losses [Line Items]	'	'	'	'
Balance, beginning of period	$55,606	$57,171	$56,851	$57,262
Reversal of provision for loan losses on PCI loans	1,404	4,467	1,380	9,869
Loans charged off	-2,176	-6,069	-4,132	-13,390
Recoveries of loans previously charged off	473	1,263	1,208	3,091
Balance, end of period	55,307	56,832	55,307	56,832
PCI Loans [Member]	'	'	'	'
Allowance For Loan And Lease Losses [Line Items]	'	'	'	'
Balance, beginning of period	35,412	36,675	37,900	39,823
Reversal of provision for loan losses on PCI loans	-940	2,517	-3,428	-631
Loans charged off	'	'	'	'
Recoveries of loans previously charged off	'	'	'	'
Balance, end of period	34,472	39,192	34,472	39,192
Non-PCI Loans Acquired [Member]	'	'	'	'
Allowance For Loan And Lease Losses [Line Items]	'	'	'	'
Balance, beginning of period	20,194	20,496	18,951	17,439
Reversal of provision for loan losses on PCI loans	2,344	1,950	4,808	10,500
Loans charged off	-2,176	-6,069	-4,132	-13,390
Recoveries of loans previously charged off	473	1,263	1,208	3,091
Balance, end of period	$20,835	$17,640	$20,835	$17,640

Allowance_for_Loan_Losses_Roll

Allowance for Loan Losses - Roll Forward of the Allowance for Loan Losses (Detail) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
					Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Other [Member]	Other [Member]	Other [Member]	Other [Member]	Non-Owner Occupied Commercial Real Estate [Member]	Non-Owner Occupied Commercial Real Estate [Member]	Non-Owner Occupied Commercial Real Estate [Member]	Non-Owner Occupied Commercial Real Estate [Member]	Other Commercial Construction and Land [Member]	Other Commercial Construction and Land [Member]	Other Commercial Construction and Land [Member]	Other Commercial Construction and Land [Member]	Multifamily Commercial Real Estate [Member]	Multifamily Commercial Real Estate [Member]	Multifamily Commercial Real Estate [Member]	Multifamily Commercial Real Estate [Member]	1-4 Family Residential Construction and Land [Member]	1-4 Family Residential Construction and Land [Member]	1-4 Family Residential Construction and Land [Member]	1-4 Family Residential Construction and Land [Member]	Owner Occupied Commercial Real Estate [Member]	Owner Occupied Commercial Real Estate [Member]	Owner Occupied Commercial Real Estate [Member]	Owner Occupied Commercial Real Estate [Member]	Commercial and Industrial Loans [Member]	Commercial and Industrial Loans [Member]	Commercial and Industrial Loans [Member]	Commercial and Industrial Loans [Member]	Lease Financing [Member]	Lease Financing [Member]	1-4 Family Residential [Member]	1-4 Family Residential [Member]	1-4 Family Residential [Member]	1-4 Family Residential [Member]	Home Equity Loans [Member]	Home Equity Loans [Member]	Home Equity Loans [Member]	Home Equity Loans [Member]	Other Consumer Loans [Member]	Other Consumer Loans [Member]	Other Consumer Loans [Member]	Other Consumer Loans [Member]
																					Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial Real Estate [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Commercial [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]	Total Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Balance, beginning of period	$55,606	$57,171	$56,851	$57,262	$14,683	$18,080	$14,730	$18,539	$11,729	$14,629	$12,763	$11,545	$28,321	$23,585	$28,275	$26,492	$873	$877	$1,083	$686	$3,829	$3,449	$4,635	$3,764	$8,892	$12,880	$8,217	$12,711	$403	$192	$320	$348	$1,559	$1,559	$1,558	$1,716	$3,530	$4,114	$4,450	$4,055	$8,198	$10,515	$8,310	$7,490	$3	$1	$20,383	$16,800	$21,724	$15,740	$4,875	$4,615	$3,869	$8,670	$3,063	$2,170	$2,682	$2,082
Provision / (Reversals)	1,404	4,467	1,380	9,869	3,536	536	3,677	-391	313	2,117	-685	9,524	-2,319	1,043	-1,568	-646	-126	771	-44	1,382	785	871	-34	592	2,605	-646	3,480	-919	77	66	160	-131	69	245	71	67	-206	360	-1,013	375	519	1,757	330	9,149	-2	'	-3,169	780	-4,492	1,812	-153	-449	901	-3,821	1,003	712	2,023	1,363
Net (Charge-offs)/ Recoveries	-1,703	-4,806	-2,924	-10,299	-119	87	-307	555	-79	-3,762	-115	-8,085	-1,143	-758	-1,848	-1,976	-362	-373	-654	-793	-127	9	-114	-27	5	76	-195	518	'	'	'	41	3	2	2	23	-7	222	-120	266	-72	-3,984	5	-8,351	'	'	-76	-8	-94	20	-432	-229	-480	-912	-635	-521	-1,274	-1,084
Balance, end of period	$55,307	$56,832	$55,307	$56,832	$18,100	$18,703	$18,100	$18,703	$11,963	$12,984	$11,963	$12,984	$24,859	$23,870	$24,859	$23,870	$385	$1,275	$385	$1,275	$4,487	$4,329	$4,487	$4,329	$11,502	$12,310	$11,502	$12,310	$480	$258	$480	$258	$1,631	$1,806	$1,631	$1,806	$3,317	$4,696	$3,317	$4,696	$8,645	$8,288	$8,645	$8,288	$1	$1	$17,138	$17,572	$17,138	$17,572	$4,290	$3,937	$4,290	$3,937	$3,431	$2,361	$3,431	$2,361

Allowance_for_Loan_Losses_Roll1

Allowance for Loan Losses - Roll Forward of the Allowance for Loan Losses at the PCI and Non-PCI Levels (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	$55,606	$57,171	$56,851	$57,262
Total charge-offs	2,176	6,069	4,132	13,390
Total recoveries	473	1,263	1,208	3,091
Net charge-offs (recoveries)	1,703	4,806	2,924	10,299
Total provision for loan losses	1,404	4,467	1,380	9,869
Balance, end of period	55,307	56,832	55,307	56,832
Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	20,194	20,496	18,951	17,439
Total charge-offs	2,176	6,069	4,132	13,390
Total recoveries	473	1,263	1,208	3,091
Net charge-offs (recoveries)	1,703	4,806	2,924	10,299
Total provision for loan losses	2,344	1,950	4,808	10,500
Balance, end of period	20,835	17,640	20,835	17,640
PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	35,412	36,675	37,900	39,823
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Net charge-offs (recoveries)	'	'	'	'
Total provision for loan losses	-940	2,517	-3,428	-631
Balance, end of period	34,472	39,192	34,472	39,192
Total Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	14,683	18,080	14,730	18,539
Total charge-offs	202	39	413	194
Total recoveries	83	126	106	749
Total provision for loan losses	3,536	536	3,677	-391
Balance, end of period	18,100	18,703	18,100	18,703
Total Commercial Real Estate [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	202	39	413	194
Total recoveries	83	126	106	749
Total provision for loan losses	109	-568	586	-666
Total Commercial Real Estate [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	3,427	1,104	3,091	275
Total Commercial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	11,729	14,629	12,763	11,545
Total charge-offs	114	4,107	305	9,011
Total recoveries	35	345	190	926
Total provision for loan losses	313	2,117	-685	9,524
Balance, end of period	11,963	12,984	11,963	12,984
Total Commercial [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	114	4,107	305	9,011
Total recoveries	35	345	190	926
Total provision for loan losses	163	780	419	7,624
Total Commercial [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	150	1,337	-1,104	1,900
Total Consumer [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	28,321	23,585	28,275	26,492
Total charge-offs	1,326	1,295	2,283	2,776
Total recoveries	183	537	435	800
Total provision for loan losses	-2,319	1,043	-1,568	-646
Balance, end of period	24,859	23,870	24,859	23,870
Total Consumer [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	1,326	1,295	2,283	2,776
Total recoveries	183	537	435	800
Total provision for loan losses	1,675	1,224	3,258	2,688
Total Consumer [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	-3,994	-181	-4,826	-3,334
Other [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	873	877	1,083	686
Total charge-offs	534	628	1,131	1,409
Total recoveries	172	255	477	616
Total provision for loan losses	-126	771	-44	1,382
Balance, end of period	385	1,275	385	1,275
Other [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	534	628	1,131	1,409
Total recoveries	172	255	477	616
Total provision for loan losses	397	514	545	854
Other [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	-523	257	-589	528
Non-Owner Occupied Commercial Real Estate [Member] | Total Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	3,829	3,449	4,635	3,764
Total charge-offs	204	11	204	92
Total recoveries	77	20	90	65
Total provision for loan losses	785	871	-34	592
Balance, end of period	4,487	4,329	4,487	4,329
Non-Owner Occupied Commercial Real Estate [Member] | Total Commercial Real Estate [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	204	11	204	92
Total recoveries	77	20	90	65
Total provision for loan losses	159	-222	181	-199
Non-Owner Occupied Commercial Real Estate [Member] | Total Commercial Real Estate [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	626	1,093	-215	791
Other Commercial Construction and Land [Member] | Total Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	8,892	12,880	8,217	12,711
Total charge-offs	-1	28	207	102
Total recoveries	4	104	12	620
Total provision for loan losses	2,605	-646	3,480	-919
Balance, end of period	11,502	12,310	11,502	12,310
Other Commercial Construction and Land [Member] | Total Commercial Real Estate [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	-1	28	207	102
Total recoveries	4	104	12	620
Total provision for loan losses	-1	-346	499	-527
Other Commercial Construction and Land [Member] | Total Commercial Real Estate [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	2,606	-300	2,981	-392
Multifamily Commercial Real Estate [Member] | Total Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	403	192	320	348
Total recoveries	'	'	'	41
Total provision for loan losses	77	66	160	-131
Balance, end of period	480	258	480	258
Multifamily Commercial Real Estate [Member] | Total Commercial Real Estate [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total recoveries	'	'	'	41
Total provision for loan losses	-13	-6	-24	-47
Multifamily Commercial Real Estate [Member] | Total Commercial Real Estate [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	90	72	184	-84
1-4 Family Residential Construction and Land [Member] | Total Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	1,559	1,559	1,558	1,716
Total charge-offs	-1	'	2	'
Total recoveries	2	2	4	23
Total provision for loan losses	69	245	71	67
Balance, end of period	1,631	1,806	1,631	1,806
1-4 Family Residential Construction and Land [Member] | Total Commercial Real Estate [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	-1	'	2	'
Total recoveries	2	2	4	23
Total provision for loan losses	-36	6	-70	107
1-4 Family Residential Construction and Land [Member] | Total Commercial Real Estate [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	105	239	141	-40
Owner Occupied Commercial Real Estate [Member] | Total Commercial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	3,530	4,114	4,450	4,055
Total charge-offs	8	'	144	'
Total recoveries	1	222	24	266
Total provision for loan losses	-206	360	-1,013	375
Balance, end of period	3,317	4,696	3,317	4,696
Owner Occupied Commercial Real Estate [Member] | Total Commercial [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	8	'	144	'
Total recoveries	1	222	24	266
Total provision for loan losses	-183	-277	39	-555
Owner Occupied Commercial Real Estate [Member] | Total Commercial [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	-23	637	-1,052	930
Commercial and Industrial Loans [Member] | Total Commercial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	8,198	10,515	8,310	7,490
Total charge-offs	106	4,107	161	9,011
Total recoveries	34	123	166	660
Total provision for loan losses	519	1,757	330	9,149
Balance, end of period	8,645	8,288	8,645	8,288
Commercial and Industrial Loans [Member] | Total Commercial [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	106	4,107	161	9,011
Total recoveries	34	123	166	660
Total provision for loan losses	347	1,057	382	8,179
Commercial and Industrial Loans [Member] | Total Commercial [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	172	700	-52	970
Lease Financing [Member] | Total Commercial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	1	'	3	'
Total charge-offs	'	'	'	'
Total provision for loan losses	'	'	-2	'
Balance, end of period	1	'	1	'
Lease Financing [Member] | Total Commercial [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total provision for loan losses	-1	'	-2	'
Lease Financing [Member] | Total Commercial [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total provision for loan losses	1	'	'	'
1-4 Family Residential [Member] | Total Consumer [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	20,383	16,800	21,724	15,740
Total charge-offs	80	28	101	28
Total recoveries	4	20	7	48
Total provision for loan losses	-3,169	780	-4,492	1,812
Balance, end of period	17,138	17,572	17,138	17,572
1-4 Family Residential [Member] | Total Consumer [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	80	28	101	28
Total recoveries	4	20	7	48
Total provision for loan losses	303	115	557	145
1-4 Family Residential [Member] | Total Consumer [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	-3,472	665	-5,049	1,667
Home Equity Loans [Member] | Total Consumer [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	4,875	4,615	3,869	8,670
Total charge-offs	465	587	594	1,367
Total recoveries	33	358	114	455
Total provision for loan losses	-153	-449	901	-3,821
Balance, end of period	4,290	3,937	4,290	3,937
Home Equity Loans [Member] | Total Consumer [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	465	587	594	1,367
Total recoveries	33	358	114	455
Total provision for loan losses	473	359	614	1,020
Home Equity Loans [Member] | Total Consumer [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	-626	-808	287	-4,841
Other Consumer Loans [Member] | Total Consumer [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Balance, beginning of period	3,063	2,170	2,682	2,082
Total charge-offs	781	680	1,588	1,381
Total recoveries	146	159	314	297
Total provision for loan losses	1,003	712	2,023	1,363
Balance, end of period	3,431	2,361	3,431	2,361
Other Consumer Loans [Member] | Total Consumer [Member] | Non-PCI Loans Acquired [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	781	680	1,588	1,381
Total recoveries	146	159	314	297
Total provision for loan losses	899	750	2,087	1,523
Other Consumer Loans [Member] | Total Consumer [Member] | PCI Loans [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Total charge-offs	'	'	'	'
Total recoveries	'	'	'	'
Total provision for loan losses	$104	($38)	($64)	($160)

Allowance_for_Loan_Losses_Summ

Allowance for Loan Losses - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Class of Loans and by Impairment Evaluation (Detail) (Non-PCI Loans Acquired [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	$30	$512
Allowance for Loan Losses, Collectively Evaluated for Impairment	20,805	18,439
Allowance for Loan Losses, Purchased Credit-Impaired	34,472	37,900
Loans, Individually Evaluated for Impairment	13,000	15,824
Loans, Collectively Evaluated for Impairment	3,088,244	2,650,649
Loans, Purchased Credit-Impaired	1,611,005	1,877,544
Total Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,276	3,997
Allowance for Loan Losses, Purchased Credit-Impaired	13,824	10,733
Loans, Individually Evaluated for Impairment	632	877
Loans, Collectively Evaluated for Impairment	523,959	440,640
Loans, Purchased Credit-Impaired	655,766	773,749
Total Commercial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	1	507
Allowance for Loan Losses, Collectively Evaluated for Impairment	9,795	8,984
Allowance for Loan Losses, Purchased Credit-Impaired	2,167	3,272
Loans, Individually Evaluated for Impairment	11,181	14,467
Loans, Collectively Evaluated for Impairment	1,533,295	1,343,381
Loans, Purchased Credit-Impaired	431,203	506,712
Total Consumer [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	29	5
Allowance for Loan Losses, Collectively Evaluated for Impairment	6,376	4,990
Allowance for Loan Losses, Purchased Credit-Impaired	18,454	23,280
Loans, Individually Evaluated for Impairment	1,187	207
Loans, Collectively Evaluated for Impairment	967,065	805,622
Loans, Purchased Credit-Impaired	480,125	547,373
Other [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	358	468
Allowance for Loan Losses, Purchased Credit-Impaired	27	615
Loans, Individually Evaluated for Impairment	'	273
Loans, Collectively Evaluated for Impairment	63,925	61,006
Loans, Purchased Credit-Impaired	43,911	49,710
Non-Owner Occupied Commercial Real Estate [Member] | Total Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,682	1,615
Allowance for Loan Losses, Purchased Credit-Impaired	2,805	3,020
Loans, Individually Evaluated for Impairment	632	877
Loans, Collectively Evaluated for Impairment	363,385	286,685
Loans, Purchased Credit-Impaired	429,716	488,171
Other Commercial Construction and Land [Member] | Total Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,505	1,201
Allowance for Loan Losses, Purchased Credit-Impaired	9,997	7,016
Loans, Collectively Evaluated for Impairment	63,000	67,789
Loans, Purchased Credit-Impaired	180,671	232,705
Multifamily Commercial Real Estate [Member] | Total Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	92	116
Allowance for Loan Losses, Purchased Credit-Impaired	388	204
Loans, Collectively Evaluated for Impairment	31,240	29,187
Loans, Purchased Credit-Impaired	31,553	38,501
1-4 Family Residential Construction and Land [Member] | Total Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	997	1,065
Allowance for Loan Losses, Purchased Credit-Impaired	634	493
Loans, Collectively Evaluated for Impairment	66,334	56,979
Loans, Purchased Credit-Impaired	13,826	14,372
Owner Occupied Commercial Real Estate [Member] | Total Commercial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,531	2,611
Allowance for Loan Losses, Purchased Credit-Impaired	786	1,839
Loans, Individually Evaluated for Impairment	4,904	4,844
Loans, Collectively Evaluated for Impairment	724,635	686,409
Loans, Purchased Credit-Impaired	310,994	366,895
Commercial and Industrial Loans [Member] | Total Commercial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	1	507
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,263	6,370
Allowance for Loan Losses, Purchased Credit-Impaired	1,381	1,433
Loans, Individually Evaluated for Impairment	6,277	9,623
Loans, Collectively Evaluated for Impairment	806,314	654,296
Loans, Purchased Credit-Impaired	120,209	139,817
Lease Financing [Member] | Total Commercial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	'	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	1	3
Loans, Collectively Evaluated for Impairment	2,346	2,676
1-4 Family Residential [Member] | Total Consumer [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	3	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,739	2,279
Allowance for Loan Losses, Purchased Credit-Impaired	14,396	19,445
Loans, Individually Evaluated for Impairment	790	'
Loans, Collectively Evaluated for Impairment	487,148	377,668
Loans, Purchased Credit-Impaired	366,033	418,642
Home Equity Loans [Member] | Total Consumer [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	17	'
Allowance for Loan Losses, Collectively Evaluated for Impairment	516	398
Allowance for Loan Losses, Purchased Credit-Impaired	3,757	3,471
Loans, Individually Evaluated for Impairment	240	'
Loans, Collectively Evaluated for Impairment	274,667	270,170
Loans, Purchased Credit-Impaired	105,860	116,196
Other Consumer Loans [Member] | Total Consumer [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Individually Evaluated for Impairment	9	5
Allowance for Loan Losses, Collectively Evaluated for Impairment	3,121	2,313
Allowance for Loan Losses, Purchased Credit-Impaired	301	364
Loans, Individually Evaluated for Impairment	157	207
Loans, Collectively Evaluated for Impairment	205,250	157,784
Loans, Purchased Credit-Impaired	$8,232	$12,535

Allowance_for_Loan_Losses_Summ1

Allowance for Loan Losses - Summary of Allowance for Loan Losses and Recorded Investment in Loans by Class of Loans and by Impairment Evaluation (Parenthetical) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans collectively evaluated for impairment, unamortized purchase discounts (Premium)	$14,000,000	$14,700,000
Acquired Loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans collectively evaluated for impairment	$401,900,000	$435,000,000

Allowance_for_Loan_Losses_Addi

Allowance for Loan Losses - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014
Receivables [Abstract]	'	'	'
Loans modified in TDRs with recorded investments	$3.10	$0.20	$3.40

FDIC_Indemnification_Asset_Add

FDIC Indemnification Asset - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
FDIC Indemnification Asset [Line Items]	'
Percentage future credit losses and workout expenses to be absorbed by FDIC	80.00%
Single Family Loans [Member]	'
FDIC Indemnification Asset [Line Items]	'
Number of FDIC loss sharing agreements	3
Period covered by loss sharing agreement	'10 years
Commercial And Other Loans [Member]	'
FDIC Indemnification Asset [Line Items]	'
Number of FDIC loss sharing agreements	3
Period covered by loss sharing agreement	'5 years
Other Covered Assets [Member]	'
FDIC Indemnification Asset [Line Items]	'
Period covered by loss sharing agreement	'8 years

FDIC_Indemnification_Asset_Sch

FDIC Indemnification Asset - Schedule of FDIC Indemnification Asset (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Fdic Indemnification Asset [Abstract]	'	'
FDIC indemnification asset, beginning balance	$33,610	$49,417
Indemnification asset income	423	492
Amortization of indemnification asset	-4,652	-3,769
Cash received on reimbursable losses	-3,852	-7,410
FDIC indemnification asset, ending balance	$25,529	$38,730

Other_Real_Estate_Owned_Additi

Other Real Estate Owned - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Banking And Thrift [Abstract]	'	'	'	'
Ending balances for OREO covered by FDIC	$17,000,000	$31,700,000	$17,000,000	$31,700,000
Ending balances for OREO non-covered	79,300,000	111,100,000	79,300,000	111,100,000
Proceeds on sale of OREO	32,300,000	28,900,000	48,295,000	44,716,000
Gains on sales of OREO	$3,192,000	$2,205,000	$3,913,000	$3,392,000

Other_Real_Estate_Owned_Other_

Other Real Estate Owned - Other Real Estate Owned (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Banking And Thrift [Abstract]	'	'	'	'
Balance, beginning of period	$120,270	$151,613	$129,396	$154,093
Real estate acquired from borrowers	8,159	24,131	17,864	42,822
Valuation allowance	-3,022	-6,209	-6,595	-12,799
Properties sold and other	-29,124	-26,743	-44,382	-41,324
Balance, end of period	$96,283	$142,792	$96,283	$142,792

Federal_Home_Loan_Bank_Advance2

Federal Home Loan Bank Advances and Short-Term Borrowings - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]	'	'
Short-term borrowings	$32,814,000	$24,850,000
Amounts of eligible collateral provided for incremental borrowing	70,800,000	95,400,000
Letters of credit issued by the Federal Home Loan Bank	25,600,000	25,600,000
Letter of credit used as collateral in lieu of pledging securities	$25,200,000	$25,200,000

Federal_Home_Loan_Bank_Advance3

Federal Home Loan Bank Advances and Short-Term Borrowings - Federal Home Loan Bank Advance Owed (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	$161,185	$96,278
FHLB Advances With 0.19% [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	50,000	'
Maturity Date	23-Jul-14	'
Contractual Rate	0.19%	'
FHLB Advances With 0.20% [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	70,000	'
Maturity Date	30-Jul-14	'
Contractual Rate	0.20%	'
FHLB Advances With 0.36 % [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	40,000	95,000
Maturity Date	19-May-15	16-May-14
Contractual Rate	0.36%	0.36%
FHLB Advances With 0.50 % [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	651	724
Maturity Date	6-Nov-17	6-Nov-17
Contractual Rate	0.50%	0.50%
FHLB Advances With 0.00% [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
Contractual Outstanding Amount	$534	$554
Maturity Date	10-Feb-26	10-Feb-26
Contractual Rate	0.00%	0.00%

Long_Term_Borrowings_Schedule_

Long Term Borrowings - Schedule of Outstanding Structured Repurchase Agreements (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	$52,993	$53,449
Contractual Amount	50,000	'
4.75% [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	10,683	10,823
Contractual Amount	10,000	'
Maturity Date	'November 6, 2016	'
Contractual Rate	4.75%	'
4.50% [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	10,709	10,833
Contractual Amount	10,000	'
Maturity Date	'March 30, 2017	'
Contractual Rate	4.50%	'
3.79% [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	10,458	10,521
Contractual Amount	10,000	'
Maturity Date	'December 18, 2017	'
Contractual Rate	3.79%	'
3.72% [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	10,433	10,492
Contractual Amount	10,000	'
Maturity Date	'December 18, 2017	'
Contractual Rate	3.72%	'
3.56% [Member]	'	'
Assets Sold under Agreements to Repurchase [Line Items]	'	'
Carrying Amount	10,710	10,780
Contractual Amount	$10,000	'
Maturity Date	'March 22, 2019	'
Contractual Rate	3.56%	'

Long_Term_Borrowings_Additiona

Long Term Borrowings - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014	Mar. 18, 2013	Jun. 30, 2014	Dec. 31, 2013
	Trust_Preferred_Securities			Subordinated Debt With Fixed 10% Interest Rate [Member]	Trust Preferred Securities [Member]	Collateralized Mortgage-Backed Securities [Member]	Collateralized Mortgage-Backed Securities [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Weighted-average rate of repurchase agreements	'	'	'	'	'	4.06%	4.06%
Collateralized mortgage-backed securities	'	'	'	'	'	$66,000,000	$62,100,000
No. of trust preferred securities acquired	13	'	'	'	'	'	'
Life of debt securities and trust preferred securities	'30 years	'	'	'	'	'	'
Period allowed for deferral of interest payment on the trust preferred securities	'60 months	'	'	'	'	'	'
Redeemed securities issued	'	'	'	'	34,500,000	'	'
Fixed interest rate	'	'	'	10.00%	7.95%	'	'
Losses (gains) on extinguishment of debt	'	308,000	'	'	300,000	'	'
Subordinated promissory notes	3,400,000	'	'	'	'	'	'
Subordinated promissory notes, due date	18-Mar-20	'	'	'	'	'	'
Carrying value of promissory notes	$3,500,000	'	$3,600,000	'	'	'	'

Long_Term_Borrowings_Summary_o

Long Term Borrowings - Summary of Subordinated Debentures (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Original Face	$151,000	'
Carrying Amount	82,578	81,557
Subordinated Debt 3 Point 80%, One [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	31-Jul-01	'
Original Face	5,000	'
Carrying Amount	3,875	3,851
Debt Instrument, variable interest rate	'3.80% (3 Month LIBOR+358 bps)	'
Maturity Date	31-Jul-31	'
Subordinated debt interest rate	3.80%	'
Subordinated debt variable interest rate, basis points	3.58%	'
Subordinated Debt 3 Point 80%, Two [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	31-Jul-01	'
Original Face	4,000	'
Carrying Amount	2,667	2,636
Debt Instrument, variable interest rate	'3.80% (3 Month LIBOR+358 bps)	'
Maturity Date	31-Jul-31	'
Subordinated debt interest rate	3.80%	'
Subordinated debt variable interest rate, basis points	3.58%	'
Subordinated Debt 3 Point 33% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	26-Jun-03	'
Original Face	10,000	'
Carrying Amount	5,968	5,921
Debt Instrument, variable interest rate	'3.33% (3 Month LIBOR+310 bps)	'
Maturity Date	26-Jun-33	'
Subordinated debt interest rate	3.33%	'
Subordinated debt variable interest rate, basis points	3.10%	'
Subordinated Debt 3 Point 08% One [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	25-Sep-03	'
Original Face	10,000	'
Carrying Amount	6,441	6,368
Debt Instrument, variable interest rate	'3.08% (3 Month LIBOR+285 bps)	'
Maturity Date	25-Sep-33	'
Subordinated debt interest rate	3.08%	'
Subordinated debt variable interest rate, basis points	2.85%	'
Subordinated Debt 3 Point 08% Two [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	30-Dec-03	'
Original Face	10,000	'
Carrying Amount	5,752	5,704
Debt Instrument, variable interest rate	'3.08% (3 Month LIBOR+285 bps)	'
Maturity Date	30-Dec-33	'
Subordinated debt interest rate	3.08%	'
Subordinated debt variable interest rate, basis points	2.85%	'
Subordinated Debt 1 Point 91% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	28-Jun-05	'
Original Face	3,000	'
Carrying Amount	1,570	1,545
Debt Instrument, variable interest rate	'1.91% (3 Month LIBOR+168 bps)	'
Maturity Date	28-Jun-35	'
Subordinated debt interest rate	1.91%	'
Subordinated debt variable interest rate, basis points	1.68%	'
Subordinated Debt 1 Point 63% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	22-Dec-05	'
Original Face	10,000	'
Carrying Amount	4,548	4,491
Debt Instrument, variable interest rate	'1.63% (3 Month LIBOR+140 bps)	'
Maturity Date	15-Mar-36	'
Subordinated debt interest rate	1.63%	'
Subordinated debt variable interest rate, basis points	1.40%	'
Subordinated Debt 1 Point 77% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	28-Dec-05	'
Original Face	13,000	'
Carrying Amount	6,562	6,458
Debt Instrument, variable interest rate	'1.77% (3 Month LIBOR+154 bps)	'
Maturity Date	15-Mar-36	'
Subordinated debt interest rate	1.77%	'
Subordinated debt variable interest rate, basis points	1.54%	'
Subordinated Debt 1 Point 78% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	23-Jun-06	'
Original Face	20,000	'
Carrying Amount	11,346	11,206
Debt Instrument, variable interest rate	'1.78% (3 Month LIBOR+155 bps)	'
Maturity Date	7-Jul-36	'
Subordinated debt interest rate	1.78%	'
Subordinated debt variable interest rate, basis points	1.55%	'
Subordinated Debt 1 Point 88% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	16-May-07	'
Original Face	56,000	'
Carrying Amount	28,474	28,050
Debt Instrument, variable interest rate	'1.88% (3 Month LIBOR+165 bps)	'
Maturity Date	15-Jun-37	'
Subordinated debt interest rate	1.88%	'
Subordinated debt variable interest rate, basis points	1.65%	'
Subordinated Debt 1 Point 66% [Member]	'	'
Debt Instrument [Line Items]	'	'
Date of Offering	15-Jun-07	'
Original Face	10,000	'
Carrying Amount	$5,375	$5,327
Debt Instrument, variable interest rate	'1.66% (3 Month LIBOR+143 bps)	'
Maturity Date	6-Sep-37	'
Subordinated debt interest rate	1.66%	'
Subordinated debt variable interest rate, basis points	1.43%	'

Long_Term_Borrowings_Schedule_1

Long Term Borrowings - Schedule of Maturities of Long-Term Borrowings (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Due in 2016	$10,683	'
Due in 2017	31,600	'
Thereafter	96,833	'
Total	139,116	138,561
Fixed Rate [Member]	'	'
Debt Instrument [Line Items]	'	'
Due in 2016	10,683	'
Due in 2017	31,600	'
Thereafter	14,255	'
Total	56,538	'
Floating Rate [Member]	'	'
Debt Instrument [Line Items]	'	'
Thereafter	82,578	'
Total	$82,578	'

Shareholders_Equity_and_Minimu2

Shareholders' Equity and Minimum Regulatory Capital Requirements - Minimum Ratios Along with the Actual Ratios for the Company and the Bank (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Adequately Capitalized Requirement Tier 1 Capital (to Average Assets) amount	$251,319	$254,126
Adequately Capitalized Requirement, Tier 1 Capital (to Average Assets)	4.00%	4.00%
Actual Tier 1 Capital (to Average Assets) amount	917,990	949,619
Actual, Tier 1 Capital (to Average Assets)	14.60%	14.90%
Adequately Capitalized Requirement Tier 1 Capital (to Risk Weighted Assets) amount	197,728	192,428
Adequately Capitalized Requirement, Tier 1 Capital (to Risk Weighted Assets)	4.00%	4.00%
Actual Tier 1 Capital (to Risk Weighted Assets) amount	917,990	949,619
Actual, Tier 1 Capital (to Risk Weighted Assets)	18.60%	19.70%
Adequately Capitalized Requirement Total Capital (to Risk Weighted Assets) amount	395,456	384,856
Adequately Capitalized Requirement, Total Capital (to Risk Weighted Assets)	8.00%	8.00%
Actual Total Capital (to Risk Weighted Assets) amount	977,260	1,010,422
Actual, Total Capital (to Risk Weighted Assets)	19.80%	21.00%
Capital Bank, NA [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Well Capitalized Requirement Tier 1 Capital (to Average Assets) amount	313,810	317,562
Well Capitalized Requirement, Tier 1 Capital (to Average Assets)	5.00%	5.00%
Adequately Capitalized Requirement Tier 1 Capital (to Average Assets) amount	251,048	254,050
Adequately Capitalized Requirement, Tier 1 Capital (to Average Assets)	4.00%	4.00%
Actual Tier 1 Capital (to Average Assets) amount	887,652	849,520
Actual, Tier 1 Capital (to Average Assets)	14.10%	13.40%
Well Capitalized Requirement Tier 1 Capital (to Risk Weighted Assets) amount	296,245	288,410
Well Capitalized Requirement, Tier 1 Capital (to Risk Weighted Assets)	6.00%	6.00%
Adequately Capitalized Requirement Tier 1 Capital (to Risk Weighted Assets) amount	197,497	192,273
Adequately Capitalized Requirement, Tier 1 Capital (to Risk Weighted Assets)	4.00%	4.00%
Actual Tier 1 Capital (to Risk Weighted Assets) amount	887,652	849,520
Actual, Tier 1 Capital (to Risk Weighted Assets)	18.00%	17.70%
Well Capitalized Requirement Total Capital (to Risk Weighted Assets) amount	493,742	480,683
Well Capitalized Requirement, Total Capital (to Risk Weighted Assets)	10.00%	10.00%
Adequately Capitalized Requirement Total Capital (to Risk Weighted Assets) amount	394,994	384,546
Adequately Capitalized Requirement, Total Capital (to Risk Weighted Assets)	8.00%	8.00%
Actual Total Capital (to Risk Weighted Assets) amount	$946,771	$910,162
Actual, Total Capital (to Risk Weighted Assets)	19.20%	18.90%

Shareholders_Equity_and_Minimu3

Shareholders' Equity and Minimum Regulatory Capital Requirements - Additional Information (Detail) (USD $)

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

9 Months Ended

6 Months Ended

Feb. 05, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jul. 23, 2014

Jun. 30, 2014

Sep. 16, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Aug. 31, 2010

Subsequent Event [Member]

Subsequent Event [Member]

Share Repurchase Plan [Member]

Share Repurchase Plan [Member]

Share Repurchase Plan [Member]

Share Repurchase Plan [Member]

Capital Bank, NA [Member]

Capital Bank, NA [Member]

Capital Bank, NA [Member]

Minimum [Member]

Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Total capital equal to risk - weighted assets

'

19.80%

'

21.00%

'

'

'

'

'

'

19.20%

18.90%

12.00%

Tier 1 capital equal to risk - weighted assets

'

18.60%

'

19.70%

'

'

'

'

'

'

18.00%

17.70%

11.00%

Minimum leverage ratio of (Tier 1 Capital ratio)

'

14.60%

'

14.90%

'

'

'

'

'

'

14.10%

13.40%

10.00%

Prohibited period for payment of dividend

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

Period of retained net profits

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

Approved dividend

'

'

'

'

'

'

'

'

'

'

$161,000,000

'

'

Shares authorized to be repurchased

50,000,000

'

'

'

50,000,000

'

100,000,000

'

'

'

'

'

'

Common shares repurchased during the period, amount

50,000,000

65,884,000

49,984,000

'

'

'

'

43,200,000

65,900,000

85,900,000

'

'

'

Common shares repurchased during the period, shares

2,839,441

'

'

'

'

'

'

1,798,133

2,766,998

3,688,874

'

'

'

Average price of common shares

$17.60

'

'

'

'

'

'

$24.04

$23.80

$23.28

'

'

'

Remaining availability for future share repurchases under the current authorization

'

'

'

'

'

'

'

$14,200,000

$14,200,000

$14,200,000

'

'

'

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 05, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

21-May-13

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

2013 Plan [Member]

2013 Plan [Member]

2013 Plan [Member]

2013 Plan [Member]

2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 And 2013 Plan [Member]

2010 Plan [Member]

Vesting Goal One [Member]

Vesting Goal Two [Member]

Vesting Goal Three [Member]

Maximum [Member]

Stock Award [Member]

Stock Award [Member]

Stock Award [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Restricted Stock Awards [Member]

Directors [Member]

Directors [Member]

Directors [Member]

OptionPlan

10% Percent Owners [Member]

Maximum [Member]

Minimum [Member]

10% Percent Owners [Member]

10% Percent Owners [Member]

Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]

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Number of shares to be awarded under the plan

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2,639,000

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Equity incentive plan effective date

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22-May-13

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Equity incentive plan expiration date

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22-May-23

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Tax benefit related to stock-based compensation expense

$400,000

$700,000

$500,000

$1,100,000

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Exercise price for common stock as a percentage of fair value

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100.00%

110.00%

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Stock ownership percentage for 110% exercise price

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10.00%

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Stock award exercise expiration period from grant date

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'10 years

'5 years

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Options exercised after ten years

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0

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Options exercised after ten years

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264,000

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264,000

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264,000

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Stock option average period vested

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'2 years

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Stock options granted

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0

0

0

0

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Outstanding Options, weighted average remaining contractual life

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'6 years 1 month 6 days

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Aggregate intrinsic value for stock options outstanding

11,700,000

0

11,700,000

0

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Aggregate intrinsic value for stock options exercisable

11,000,000

0

11,000,000

0

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Restricted stock granted to directors

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4,000

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11,880

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4,000

Stock award grants grants in period, percentage

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33.00%

33.00%

33.00%

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Restricted stock price awards vested

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$25

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$25

$28

$32

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Trading period for determining stock price

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'30 days

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Stock award vested during period

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405,133

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Excess tax benefits related to restricted stock awards

'

'

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1,600,000

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Compensation expense for stock awards

$1,020,000

$1,364,000

$1,748,000

$2,941,000

$171,000

$96,000

$366,000

$179,000

$849,000

$1,268,000

$1,382,000

$2,762,000

'

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$300,000

$300,000

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'

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Components and Classification of Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$1,020	$1,364	$1,748	$2,941
Stock Options [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	171	96	366	179
Restricted Stock Awards [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$849	$1,268	$1,382	$2,762

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Weighted Average Assumptions to Compute the Grant-Date Fair Value of Options (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Dividend yield	0.00%	0.00%
Risk-free interest rate	1.02%	1.02%
Expected option life	'5 years 9 months	'5 years 9 months
Volatility	37.00%	37.00%
Weighted average grant-date fair value of options granted	$6.52	$6.52

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Beginning Balance, Shares	3,123	2,890
Stock options granted, Shares	'	264
Exercised, Shares	'	'
Expired or forfeited, Shares	-9	-8
Ending Balance, Shares	3,114	3,146
Beginning Balance, Weighted Average Exercise Price Per Share	$20.50	$21.39
Granted, Weighted Average Exercise Price Per Share	'	$18
Exercised, Weighted Average Exercise Price Per Share	'	'
Expired or forfeited, Weighted Average Exercise Price Per Share	$59.60	$182.10
Ending Balance, Weighted Average Exercise Price Per Share	$20.39	$20.70

StockBased_Compensation_Summar3

Stock-Based Compensation - Summary of Options Outstanding (Detail) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Remaining Contractual Life	'6 years 1 month 6 days	'
Range One [Member]	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Outstanding Options, Number	236	264
Exercisable Options, Number	118	'
Remaining Contractual Life	'8 years 10 months 21 days	'9 years 10 months 21 days
Outstanding Options, Weighted Average Exercise Price Per Share	$18	$18
Price Per Share	$18	'
Exercise Price	$18	$18
Range Two [Member]	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Outstanding Options, Number	2,864	2,864
Exercisable Options, Number	2,864	2,864
Remaining Contractual Life	'5 years 11 months 5 days	'6 years 11 months 5 days
Outstanding Options, Weighted Average Exercise Price Per Share	$20	$20
Price Per Share	$20	$20
Exercise Price	$20	$20
Range Three [Member]	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Outstanding Options, Number	14	18
Exercisable Options, Number	14	17
Remaining Contractual Life	'3 years 3 months 7 days	'3 years 7 months 24 days
Outstanding Options, Weighted Average Exercise Price Per Share	$138.87	$171.04
Price Per Share	$138.87	$176.99
Exercise Prices, Lower Range Limit	$28.44	$28.44
Exercise Prices, Upper Range Limit	$2,026	$2,026
Range Four [Member]	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Outstanding Options, Number	3,114	3,146
Exercisable Options, Number	2,996	2,881
Remaining Contractual Life	'6 years 1 month 24 days	'7 years 1 month 28 days
Outstanding Options, Weighted Average Exercise Price Per Share	$20.39	$20.70
Price Per Share	$20.39	$20.94
Exercise Prices, Lower Range Limit	$18	$18
Exercise Prices, Upper Range Limit	$2,026	$2,026

StockBased_Compensation_Summar4

Stock-Based Compensation - Summary of Unvested Restricted Stock Awards (Detail) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Beginning Balance, Shares	1,215	1,212
Granted, Shares	'	4
Exercised, Shares	-405	'
Expired or forfeited, Shares	'	'
Ending Balance, Shares	810	1,216
Beginning Balance, Value	$14.28	$14.27
Granted, Value	'	$18
Exercised, Value	$15.07	'
Expired or forfeited, Value	'	'
Ending Balance, Value	$13.89	$14.28

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Income Tax Computed at Applicable Federal Statutory Income Tax Rates to Total Income Taxes (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Income before income taxes	$20,041	$15,009	$38,663	$26,317
Income taxes computed at Federal statutory tax rate	7,014	5,253	13,532	9,211
Effect of:	'	'	'	'
State taxes (net of federal benefit)	738	588	1,483	1,032
Tax-exempt interest income, net	-158	-170	-333	-340
Contingent value right expense	114	150	383	1,159
Other, net	-92	-241	-241	61
Total income tax expense	$7,616	$5,580	$14,824	$11,123

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'
Income tax rates	38.00%	37.00%	38.00%	42.00%	'
Deferred income tax asset, net	$148,432,000	'	$148,432,000	'	$166,762,000
Valuation allowance	'	'	'	'	'
Federal and state net operating loss carryforwards	109,300,000	'	109,300,000	'	103,700,000
Year of expiration	'	'	'2029	'	'
Estimated amount of annual limitation of acquired companies	'	'	10,900,000	'	'
Uncertain tax positions	$0	'	$0	'	$0

Fair_Value_Assets_and_Liabilit

Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Trading securities	$6,515	$6,348
Available-for-sale securities	'	'
Available for sale securities	594,745	685,441
Asset-Backed Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	133,225
Industrial Revenue Bonds [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	3,736	3,859
Marketable Equity Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	949	931
Collateralized Debt Obligations [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	800
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Assets	'	'
Trading securities	4,250	4,477
Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets	'	'
Trading securities	2,265	1,871
Available-for-sale securities	'	'
Available for sale securities	591,009	681,582
Gross asset value of derivatives	5	15
Liabilities	'	'
Gross liability value of derivatives	211	1,330
Significant Unobservable Inputs (Level 3) [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	3,736	3,859
Fair Value on Recurring Basis [Member]	'	'
Assets	'	'
Trading securities	6,515	6,348
Available-for-sale securities	'	'
Available for sale securities	594,745	685,441
Gross asset value of derivatives	5	15
Liabilities	'	'
Gross liability value of derivatives	211	1,330
Fair Value on Recurring Basis [Member] | Asset-Backed Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	133,225
Fair Value on Recurring Basis [Member] | Mortgage-Backed Securities-Residential [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	590,060	546,626
Fair Value on Recurring Basis [Member] | Industrial Revenue Bonds [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	3,736	3,859
Fair Value on Recurring Basis [Member] | Marketable Equity Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	949	931
Fair Value on Recurring Basis [Member] | Collateralized Debt Obligations [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	800
Fair Value on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Assets	'	'
Trading securities	4,250	4,477
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets	'	'
Trading securities	2,265	1,871
Available-for-sale securities	'	'
Available for sale securities	591,009	681,582
Gross asset value of derivatives	5	15
Liabilities	'	'
Gross liability value of derivatives	211	1,330
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Asset-Backed Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	133,225
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities-Residential [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	590,060	546,626
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Marketable Equity Securities [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	949	931
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Collateralized Debt Obligations [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	'	800
Fair Value on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	3,736	3,859
Fair Value on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Industrial Revenue Bonds [Member]	'	'
Available-for-sale securities	'	'
Available for sale securities	$3,736	$3,859

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended						6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Dec. 31, 2013
									Carrying Value [Member]	Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'	'	'	'	'	'
Transfers of assets and liabilities between levels of the fair value	$0	'	$0	'	'	'	'	'	'	'
Other real estate owned	96,283	142,792	96,283	142,792	120,270	129,396	151,613	154,093	104,100	138,400
Other real estate valuation allowance	$3,022	$6,209	$6,595	$12,799	'	'	'	'	$20,400	$19,800

Fair_Value_Fair_Value_Measurem

Fair Value - Fair Value Measurements on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) (Significant Unobservable Inputs (Level 3) [Member], Fair Value on Recurring Basis [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Corporate Bonds [Member]	'	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning balance	'	$26	'	$26
Included in earnings-gain on sales	'	199	'	199
Sales	'	-225	'	-225
Ending balance	'	'	'	'
Industrial Revenue Bonds [Member]	'	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning balance	3,727	3,857	3,859	3,800
Principal reduction	'	'	-170	'
Included in other comprehensive income	9	15	47	72
Ending balance	3,736	3,872	3,736	3,872
Collateralized Debt Obligations [Member]	'	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning balance	'	307	'	297
Included in other comprehensive income	'	-6	'	4
Ending balance	'	$301	'	$301

Fair_Value_Quantitative_Inform

Fair Value - Quantitative Information About Fair Value Measurements (Detail) (Significant Unobservable Inputs (Level 3) [Member], USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Fair Value	$5,310,616	$5,342,254
Other real estate owned	4,914,769	4,755,099
Fair Value on Recurring Basis [Member] | Industrial Revenue Bonds [Member] | Discounted Cash Flow [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Fair Value	3,736	3,859
Discount Rate	3.50%	'
Illiquidity factor	0.50%	0.50%
Fair Value on Recurring Basis [Member] | Industrial Revenue Bonds [Member] | Discounted Cash Flow [Member] | Minimum [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Discount Rate	'	3.70%
Fair Value on Recurring Basis [Member] | Industrial Revenue Bonds [Member] | Discounted Cash Flow [Member] | Maximum [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Discount Rate	'	3.90%
Fair Value on Nonrecurring Basis [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Impaired loans	790	1,332
Fair Value on Nonrecurring Basis [Member] | Fair Value of Property [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Other real estate owned	83,761	118,579
Impaired loans	$790	$1,332
Fair Value on Nonrecurring Basis [Member] | Fair Value of Property [Member] | Minimum [Member] | Other real estate owned [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Appraised value less costs to sell	6.00%	7.00%
Fair Value on Nonrecurring Basis [Member] | Fair Value of Property [Member] | Maximum [Member] | Other real estate owned [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Appraised value less costs to sell	10.00%	10.00%
Fair Value on Nonrecurring Basis [Member] | Fair Value of Collateral [Member] | Impaired Loans Commercial [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Appraised value less costs to sell	'	8.00%
Fair Value on Nonrecurring Basis [Member] | Fair Value of Collateral [Member] | Minimum [Member] | Impaired Loans [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Appraised value less costs to sell	6.00%	'
Fair Value on Nonrecurring Basis [Member] | Fair Value of Collateral [Member] | Maximum [Member] | Impaired Loans [Member]	'	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'	'
Appraised value less costs to sell	8.00%	'

Fair_Value_Assets_and_Liabilit1

Fair Value - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'
Other real estate owned	$96,283	$120,270	$129,396	$142,792	$151,613	$154,093
Fair Value on Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'
Other real estate owned	'	'	'	'	'	'
Other repossesed assets	'	'	'	'	'	'
Impaired loans	'	'	'	'	'	'
Fair Value on Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'
Other repossesed assets	107	'	108	'	'	'
Fair Value on Nonrecurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]	'	'	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'
Other real estate owned	83,761	'	118,579	'	'	'
Impaired loans	$790	'	$1,332	'	'	'

Fair_Value_Carrying_Amounts_an

Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial Assets	'	'
Trading securities	$6,515	$6,348
Investment securities available-for-sale	594,745	685,441
Investment securities held-to-maturity	480,971	459,693
Financial Liabilities	'	'
Contractual deposits	1,359,727	1,447,497
Federal Home Loan Bank advances	161,185	96,278
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Financial Assets	'	'
Cash and cash equivalents	141,033	164,441
Trading securities	4,250	4,477
Total financial assets	145,283	168,918
Significant Other Observable Inputs (Level 2) [Member]	'	'
Financial Assets	'	'
Trading securities	2,265	1,871
Investment securities available-for-sale	591,009	681,582
Investment securities held-to-maturity	480,971	459,693
Loans, net	9,926	8,012
Receivable from FDIC	4,578	7,624
Gross asset value of derivatives	5	15
Total financial assets	1,088,754	1,158,797
Financial Liabilities	'	'
Federal Home Loan Bank advances	161,124	96,241
Short-term borrowings	32,814	24,850
Gross liability value of derivatives	211	1,330
Total financial liabilities	194,149	122,421
Significant Unobservable Inputs (Level 3) [Member]	'	'
Financial Assets	'	'
Investment securities available-for-sale	3,736	3,859
Loans, net	4,840,631	4,673,542
FDIC indemnification asset	25,529	33,610
Other	44,873	44,088
Total financial assets	4,914,769	4,755,099
Financial Liabilities	'	'
Noncontractual deposits	3,801,729	3,737,566
Contractual deposits	1,356,923	1,448,032
Long-term borrowings	55,178	55,861
Subordinated debentures	96,786	100,795
Total financial liabilities	5,310,616	5,342,254
Carrying Value [Member]	'	'
Financial Assets	'	'
Cash and cash equivalents	141,033	164,441
Trading securities	6,515	6,348
Investment securities available-for-sale	594,745	685,441
Investment securities held-to-maturity	475,167	465,098
Loans, net	4,666,868	4,495,178
FDIC indemnification asset	25,529	33,610
Receivable from FDIC	4,578	7,624
Other	44,873	44,088
Gross asset value of derivatives	5	15
Total financial assets	5,959,313	5,901,843
Financial Liabilities	'	'
Noncontractual deposits	3,801,729	3,737,566
Contractual deposits	1,359,727	1,447,497
Federal Home Loan Bank advances	161,185	96,278
Short-term borrowings	32,814	24,850
Long-term borrowings	52,993	53,449
Subordinated debentures	86,123	85,112
Gross liability value of derivatives	211	1,330
Total financial liabilities	5,494,782	5,446,082
Estimated Fair Value [Member]	'	'
Financial Assets	'	'
Cash and cash equivalents	141,033	164,441
Trading securities	6,515	6,348
Investment securities available-for-sale	594,745	685,441
Investment securities held-to-maturity	480,971	459,693
Loans, net	4,850,557	4,681,554
FDIC indemnification asset	25,529	33,610
Receivable from FDIC	4,578	7,624
Other	44,873	44,088
Gross asset value of derivatives	5	15
Total financial assets	6,148,806	6,082,814
Financial Liabilities	'	'
Noncontractual deposits	3,801,729	3,737,566
Contractual deposits	1,356,923	1,448,032
Federal Home Loan Bank advances	161,124	96,241
Short-term borrowings	32,814	24,850
Long-term borrowings	55,178	55,861
Subordinated debentures	96,786	100,795
Gross liability value of derivatives	211	1,330
Total financial liabilities	$5,504,765	$5,464,675

Derivative_Instrument_Summary_

Derivative Instrument - Summary of Derivative Instrument Contracts Fair Value and Notional Amount (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Fair Value	$5	$15
Derivative, Notional Amount	2,613	16,715
Assets [Member] | Interest Rate Cap Contracts (Matured in 2014) [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Notional Amount	'	12,500
Assets [Member] | Forward Loan Sales Contracts (Maturing in 2014) [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Fair Value	5	15
Derivative, Notional Amount	2,613	4,215
Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Fair Value	211	1,330
Derivative, Notional Amount	35,723	28,545
Liabilities [Member] | Forward Loan Sales Contracts (Maturing in 2014) [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Fair Value	49	10
Derivative, Notional Amount	10,723	3,545
Liabilities [Member] | Interest Rate Swaps Associated with Certificates of Deposits (Maturing in 2040) [Member]	'	'
Derivative [Line Items]	'	'
Derivative, Fair Value	162	1,320
Derivative, Notional Amount	$25,000	$25,000

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Non-Interest Income [Member]	'	'	'	'
Non-interest income (expense)	$600	$500	$1,700	$700
Non-Interest Expense [Member]	'	'	'	'
Non-interest income (expense)	($16)	($100)	($35)	($200)