Capital Bank Financial (CBF) 10-Q 31 Jul 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 27, 2015
Document Information [Line Items]
Entity Registrant Name	Capital Bank Financial Corp.
Entity Central Index Key	1,479,750
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		29,886,155
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		16,553,429

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 93,637	$ 106,193
Interest-bearing deposits in other banks	107,649	81,942
Total cash and cash equivalents	201,286	188,135
Trading securities	2,898	2,410
Investment securities available-for-sale at fair value (amortized cost $600,053 and $554,488, respectively)	600,138	555,893
Investment securities held-to-maturity at amortized cost (fair value $431,764 and $443,379, respectively)	426,427	436,962
Loans held for sale	7,127	5,516
Loans, net of deferred loan costs and fees	5,199,287	4,994,703
Less: Allowance for loan and lease losses	48,063	50,211
Loans, net	5,151,224	4,944,492
Other real estate owned	63,737	77,626
FDIC indemnification asset	11,764	16,762
Receivable from FDIC	2,652	3,661
Premises and equipment, net	163,070	173,176
Goodwill	134,522	134,522
Intangible assets, net	16,995	18,897
Deferred income tax asset, net	117,151	129,624
Other assets	155,510	143,734
Total Assets	7,054,501	6,831,410
Deposits:
Non-interest bearing demand	1,132,085	1,054,128
Interest bearing demand	1,367,123	1,383,990
Money market	991,520	898,254
Savings	479,885	500,028
Time deposits	1,521,810	1,418,700
Total deposits	5,492,423	5,255,100
Federal Home Loan Bank advances	355,995	296,091
Short-term borrowings	18,466	23,407
Long-term borrowings	84,688	139,681
Accrued expenses and other liabilities	43,583	53,557
Total liabilities	5,995,155	5,767,836
Commitments and contingencies	0	0
Shareholders’ equity
Preferred stock $0.01 par value: 50,000 shares authorized, 0 shares issued	0	0
Additional paid in capital	1,078,740	1,081,628
Retained earnings	182,782	158,403
Accumulated other comprehensive loss	(4,545)	(3,824)
Treasury stock, at cost, 9,047 and 8,086 shares, respectively	(198,186)	(173,190)
Total shareholders’ equity	1,059,346	1,063,574
Total Liabilities and Shareholders’ Equity	7,054,501	6,831,410
Common Class A
Shareholders’ equity
Common stock	372	370
Total shareholders’ equity	372	370
Common Class B
Shareholders’ equity
Common stock	183	187
Total shareholders’ equity	$ 183	$ 187

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Amortized cost of investment securities available-for-sale	$ 600,053	$ 554,488
Fair value of investment securities held-to-maturity	$ 431,764	$ 443,379
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Treasury stock, shares	9,047,000	8,086,000
Common Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	37,160,000	36,936,000
Common stock, shares outstanding	29,886,000	30,150,000
Common Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	18,327,000	18,743,000
Common stock, shares outstanding	16,554,000	17,443,000

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest and dividend income
Loans, including fees	$ 61,400	$ 61,667	$ 121,659	$ 124,886
Investment securities:
Taxable interest income	5,089	4,393	10,002	8,940
Tax-exempt interest income	126	155	266	311
Dividends	14	15	27	30
Interest-bearing deposits in other banks	36	38	69	63
Other earning assets	646	578	1,334	1,159
Total interest and dividend income	67,311	66,846	133,357	135,389
Interest expense
Deposits	4,838	4,245	9,248	8,561
Long-term borrowings	1,645	1,719	3,370	3,423
Federal Home Loan Bank advances	134	41	309	102
Other borrowings	9	10	16	19
Total interest expense	6,626	6,015	12,943	12,105
Net Interest Income	60,685	60,831	120,414	123,284
Provision for loan and lease losses	1,299	1,404	458	1,380
Net interest income after provision for loan and lease losses	59,386	59,427	119,956	121,904
Non-Interest Income
Service charges on deposit accounts	5,189	5,672	9,894	11,108
Debit card income	3,176	3,103	6,140	5,947
Fees on mortgage loans originated and sold	1,278	1,123	2,425	1,882
Investment advisory and trust fees	1,125	910	2,131	2,171
FDIC indemnification asset expense	(2,499)	(2,064)	(4,938)	(4,229)
Investment securities gains (losses), net	231	(28)	321	146
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	(288)	0	(288)	0
Other income	2,151	3,171	4,598	6,231
Total non-interest income	10,363	11,887	20,283	23,256
Non-Interest Expense
Salaries and employee benefits	21,881	23,449	45,762	46,947
Stock-based compensation expense	108	1,020	392	1,748
Net occupancy and equipment expense	7,754	8,723	15,883	17,322
Computer services	3,343	3,389	6,740	6,642
Software expense	2,082	1,940	4,224	3,808
Telecommunication expense	1,367	1,628	2,747	3,236
OREO valuation expense	1,710	3,022	3,100	6,595
Net gains on sales of OREO	(957)	(3,192)	(964)	(3,913)
Foreclosed asset related expense	600	991	1,274	2,450
Loan workout expense	795	1,117	1,418	2,294
Professional fees	1,723	2,038	3,457	4,042
Gains (Losses) on Extinguishment of Debt	1,438	0	1,438	0
Contingent value right expense	4	327	120	1,094
Regulatory assessments	1,831	1,648	3,526	3,277
Restructuring charges, net	178	0	2,519	0
Other expense	5,645	5,173	10,513	10,955
Total non-interest expense	49,502	51,273	102,149	106,497
Income before income taxes	20,247	20,041	38,090	38,663
Income tax expense	7,257	7,616	13,711	14,824
Net income	$ 12,990	$ 12,425	$ 24,379	$ 23,839
Earnings per share:
Earnings per share, basic (in dollars per share)	$ 0.28	$ 0.25	$ 0.53	$ 0.48
Earnings per share, diluted (in dollars per share)	$ 0.28	$ 0.25	$ 0.51	$ 0.47
Weighted average shares outstanding:
Weighted average number of shares outstanding, basic	45,913	49,090	46,102	49,800
Weighted average number of shares outstanding, diluted	47,220	50,261	47,427	51,092

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$ 12,990	$ 12,425	$ 24,379	$ 23,839
Other comprehensive (loss) income before tax:
Unrealized holding (losses) gains on investment securities available-for-sale	(6,624)	4,286	(1,007)	6,674
Reclassification adjustment for gains realized in net income on securities available-for-sale	(262)	(26)	(313)	(322)
Reclassification adjustment for losses amortized in net income on securities held-to-maturity	391	367	754	705
Unrealized holding losses on cash flow hedges	(835)	0	(32)	0
Reclassification adjustments for net gains included in net income on cash flow hedges	(459)	0	(567)	0
Other comprehensive (loss) income, before tax:	(7,789)	4,627	(1,165)	7,057
Tax effect	2,970	(1,797)	444	(2,741)
Other comprehensive (loss) income, net of tax:	(4,819)	2,830	(721)	4,316
Comprehensive income	$ 8,171	$ 15,255	$ 23,658	$ 28,155

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Common Class A	Common Class B
Beginning balance, shares at Dec. 31, 2013						33,051	19,047
Beginning balance at Dec. 31, 2013	$ 1,112,788	$ 1,082,235	$ 107,485	$ (7,528)	$ (69,962)	$ 362	$ 196
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	23,839		23,839
Other comprehensive income, net of tax expense	4,316			4,316
Stock-based compensation	1,748	1,748
Stock Issued During Period, Shares, Share-based Compensation, Gross						11
Treasury Stock Acquired During Period Shares						192	0
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options	(4,852)	(4,851)				$ (1)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net					1,603
Purchase of treasury stock, shares						(2,567)	(200)
Purchase of treasury stock	(65,884)				(65,884)
Conversion of shares, shares						622	(622)
Conversion of shares						$ 6	$ (6)
Ending balance, shares at Jun. 30, 2014						30,925	18,225
Ending balance at Jun. 30, 2014	1,073,558	1,080,735	131,324	(3,212)	(135,846)	$ 367	$ 190
Beginning balance, shares at Dec. 31, 2014						30,150	17,443
Beginning balance at Dec. 31, 2014	1,063,574	1,081,628	158,403	(3,824)	(173,190)	$ 370	$ 187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	24,379		24,379
Other comprehensive income, net of tax expense	(721)			(721)
Stock-based compensation	392	392
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited						(192)
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options	(5,461)	(5,459)				$ (2)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net					2,179
Purchase of treasury stock, shares						(487)	(474)
Purchase of treasury stock	(24,996)				(24,996)
Conversion of shares, shares						415	(415)
Conversion of shares						$ 4	$ (4)
Ending balance, shares at Jun. 30, 2015						29,886	16,554
Ending balance at Jun. 30, 2015	$ 1,059,346	$ 1,078,740	$ 182,782	$ (4,545)	$ (198,186)	$ 372	$ 183

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income tax expense	$ 2,741	$ 444

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Net Income	$ 24,379	$ 23,839
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Accretion of purchased credit impaired loans	(49,892)	(64,183)
Depreciation and amortization	9,031	9,664
Impairment of premises and equipment	1,525	0
Provision for loan and lease losses	458	1,380
Deferred income tax	12,917	13,054
Net amortization of investment securities premium/discount	3,293	4,272
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	288	0
Net realized gains on sales of investment securities	(321)	(146)
Stock-based compensation expense	392	1,748
Net gains on sales of OREO	(964)	(3,913)
OREO valuation expense	3,100	6,595
Other	2	21
Net deferred loan origination fees	(3,837)	(3,022)
Gains (Losses) on Extinguishment of Debt	1,438	0
Mortgage loans originated for sale	(92,276)	(68,141)
Proceeds from sales of mortgage loans originated for sale	93,090	68,109
Fees on mortgage loans originated and sold	(2,425)	(1,882)
FDIC indemnification asset expense	4,938	4,229
Gains on sales/disposals of premises and equipment	(335)	(44)
Net proceeds from FDIC loss share agreements	1,128	7,327
Change in other assets	(5,260)	(3,364)
Change in accrued expenses and other liabilities	1,260	(8,919)
Net cash provided by (used in) operating activities	1,929	(13,376)
Cash flows from investing activities
Purchases of investment securities available-for-sale	(137,382)	(108,257)
Purchases of investment securities held-to-maturity	(29,912)	(44,143)
Proceeds from sale of investment securities available-for-sale	52,179	150,328
Repayments of principal and maturities of investment securities available-for-sale	36,850	51,660
Repayments of principal and maturities of investment securities held-to-maturity	40,529	33,804
Net purchases of FHLB and FRB stock	(1,995)	(498)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(17,162)	0
Net increase in loans	(160,518)	(121,816)
Purchases of premises and equipment	(3,154)	(4,503)
Proceeds from sales of premises and equipment	698	115
Proceeds from sales of OREO	18,810	48,295
Net cash (used in) provided by investing activities	(201,057)	4,985
Cash flows from financing activities
Net increase in demand, money market and savings accounts	134,213	64,163
Net increase (decrease) in time deposits	103,110	(87,769)
Net (decrease) increase in federal funds purchased and securities sold under agreement to repurchase	(6,308)	7,963
Increase (Decrease) in Payables under Repurchase Agreements	(52,295)	0
Net increase (decrease) in short-term FHLB advances	60,000	(55,000)
Excess Tax Benefit from Share-based Compensation, Financing Activities	2,179	1,603
Net (decrease) increase in long-term FHLB advances	(95)	119,907
Early Repayment of Subordinated Debt	3,529	0
Purchases of treasury stock	(24,996)	(65,884)
Net cash provided by (used in) financing activities	212,279	(15,017)
Net increase (decrease) in cash and cash equivalents	13,151	(23,408)
Cash and cash equivalents at beginning of period	188,135	164,441
Cash and cash equivalents at end of period	201,286	141,033
Supplemental disclosures of cash:
Interest paid	10,787	10,556
Cash collections of contractual interest on purchased credit impaired loans	31,324	44,245
Income taxes paid	1,242	705
Supplemental disclosures of non-cash transactions:
OREO acquired through loan transfers	$ 7,058	$ 17,864

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Nature of Operations and Principles of Consolidation Capital Bank Financial Corp. (“CBF” or the “Company”; formerly known as North American Financial Holdings, Inc.) is a bank holding company incorporated in late 2009 in Delaware and headquartered in Florida whose business is conducted primarily through Capital Bank, National Association (“Capital Bank, NA” or the “Bank”). The Company was incorporated with the goal of creating a regional banking franchise in the southeastern region of the United States through organic growth and acquisitions of other banks, including failed, underperforming and undercapitalized banks. CBF has raised $955.6 million to make acquisitions through a series of private placements and an initial public offering of its common stock. Since inception, CBF has acquired seven depository institutions, including the assets and certain deposits from failed banks. CBF has a total of 153 full service banking offices located in Florida, North and South Carolina, Tennessee and Virginia. Through its branches CBF offers a wide range of commercial and consumer loans and deposits, as well as ancillary financial services. The accompanying unaudited Consolidated Financial Statements 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 U.S. 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, 2014. Use of Estimates and Assumptions To prepare financial statements in conformity with U. S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as presented in the financial statements. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Recent Accounting Pronouncements In April 2015, the Financial Accounting Standard Board (the “FASB”) issued Accounting Standards Update ("ASU") 2015-3, "Interest - Imputation of interest" (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs". The amendments in ASU 2015-3 require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this Update. The amendments in ASU 2015-3 are effective for financial statements issued for fiscal years beginning after December 31, 2015, and interim periods within those fiscal years. The adoption of ASU 2015-3 is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In November 2014, the FASB issued ASU 2014-16, “Derivative and Hedging” (Topic 815)”. The amendments in ASU 2014-16 do not change the current criteria in GAAP for determining when separation of certain embedded derivative features in a hybrid financial instrument is required, but clarifies how current GAAP should be interpreted in evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Specifically, the amendments explain that an entity should consider all relevant terms and features in evaluating the nature of the host contract. Furthermore, the amendments specify that no single term or feature would necessarily determine the economic characteristics and risks of the host contract. Rather, the nature of the host contract depends upon the economic characteristics and risks of the entire hybrid financial instrument. In addition, the amendments clarify that, in evaluating the nature of a host contract, an entity should assess the substance of the relevant terms and features. The amendments in ASU 2014-16 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The adoption of ASU 2014-16 is not expected to have a material impact on the Company's consolidated financial position, results of operations and cash flows. In August 2014, the FASB issued ASU 2014-15, "Presentation of Financial Statements-Going Concern (Subtopic 205-40)—Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern". The amendments in ASU 2014-15 provide guidance in U.S. GAAP about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The amendments in ASU 2014-15 apply to all entities and will be effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. The adoption of ASU 2014-15 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. 2014-12, “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”. ASU 2014-12 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. ASU 2014-12 is effective for fiscal years and interim periods beginning after December 15, 2015. The adoption of ASU 2014-12 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”. ASU 2014-11 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 accounting changes in ASU 2014-11 are effective for the first interim or annual period beginning after December 15, 2014. 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 March 15, 2015. The adoption of ASU 2014-11 did not 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. 2014-9, “Revenue from Contracts with Customers (Topic 606)”. ASU 2014-9 clarifies the principles for recognizing revenue from contracts with customers. ASU 2014-9, 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 ASU 2014-9 to determine the impact on its consolidated financial position, results of operations and cash flows.

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share Basic earnings per share is computed as net income attributable to common shareholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share include 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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Weighted average number of shares outstanding: Basic 45,913 49,090 46,102 49,800 Dilutive effect of options outstanding 800 527 743 486 Dilutive effect of unvested restricted shares 507 644 582 806 Diluted 47,220 50,261 47,427 51,092 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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Anti-dilutive stock options 9 14 9 14 Anti-dilutive unvested restricted shares — — — —

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Trading securities totaled $ 2.9 million and $2.4 million at June 30, 2015 and December 31, 2014 , respectively. The amortized cost and estimated fair value of investment securities available-for-sale and held-to-maturity at June 30, 2015 and December 31, 2014 , are presented below: (Dollars in thousands) June 30, 2015 Amortized Unrealized Unrealized Estimated Available-for-Sale Corporate bonds $ 22,682 $ 960 $ — $ 23,642 Mortgage-backed securities—residential issued by government sponsored entities 573,962 2,415 3,384 572,993 Industrial revenue bonds 3,409 94 — 3,503 Total $ 600,053 $ 3,469 $ 3,384 $ 600,138 Held-to-Maturity U.S. Government agencies $ 13,450 $ 208 $ — $ 13,658 Corporate bonds 30,067 244 30 30,281 State and political subdivisions—tax exempt 10,869 382 — 11,251 State and political subdivisions—taxable 533 18 — 551 Mortgage-backed securities—residential issued by government sponsored entities 371,508 4,955 440 376,023 Total $ 426,427 $ 5,807 $ 470 $ 431,764 (Dollars in thousands) December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 550,908 $ 3,127 $ 1,832 $ 552,203 Industrial revenue bonds 3,580 110 — 3,690 Total $ 554,488 $ 3,237 $ 1,832 $ 555,893 Held-to-Maturity U.S. Government agencies $ 13,989 $ 230 $ — $ 14,219 Corporate bonds 25,000 163 — 25,163 State and political subdivisions—tax exempt 13,008 431 3 13,436 State and political subdivisions—taxable 537 26 — 563 Mortgage-backed securities—residential issued by government sponsored entities 384,428 5,626 56 389,998 Total $ 436,962 $ 6,476 $ 59 $ 443,379 Proceeds from sales of securities were $31.9 million and $52.2 million for the three and six months ended June 30, 2015 , respectively. Gross gains of $0.3 million and $0.3 million were realized on sales of these investments during the three and six months ended June 30, 2015 , respectively. Proceeds from sales of securities were $149.5 million and $150.3 million for the three and six months ended June 30, 2014 , respectively. Gross gains of $0.8 million and gross losses of $0.8 million were realized on sales of these investments during the three months ended June 30, 2014 . Gross gains of $1.1 million and gross losses of $0.8 million were realized on sales of these investments during the six months ended June 30, 2014 . The estimated fair value of investment securities at June 30, 2015 , 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 prepay obligations without call or prepayment penalties. Debt securities not due at a single maturity date are shown separately. (Dollars in thousands) June 30, 2015 Amortized Estimated Yield 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 26,091 27,145 2.44 % Mortgage-backed securities—residential issued by government sponsored entities 573,962 572,993 1.94 % Total $ 600,053 $ 600,138 1.96 % Amortized Estimated Yield Held-to-maturity Due in one year or less $ 3 $ 3 1.10 % Due after one year through five years 16,265 16,333 4.59 % Due after five years through ten years 24,668 25,196 4.58 % Due after ten years 13,983 14,209 2.88 % Mortgage-backed securities—residential issued by government sponsored entities 371,508 376,023 2.34 % Total $ 426,427 $ 431,764 2.22 % 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 June 30, 2015 Estimated Unrealized Estimated Unrealized Estimated Unrealized Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 282,383 $ 2,933 $ 20,766 $ 451 $ 303,149 $ 3,384 Total $ 282,383 $ 2,933 $ 20,766 $ 451 $ 303,149 $ 3,384 Held-to-Maturity U.S. government agencies $ — $ — $ 13,658 $ 422 $ 13,658 $ 422 Corporate bonds 5,037 30 — — 5,037 30 Mortgage-backed securities—residential issued by government sponsored entities 115,555 1,310 144,088 2,919 259,643 4,229 Total $ 120,592 $ 1,340 $ 157,746 $ 3,341 $ 278,338 $ 4,681 (Dollars in thousands) Less than 12 Months 12 Months or Longer Total December 31, 2014 Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 215,139 $ 1,596 $ 28,439 $ 236 $ 243,578 $ 1,832 Total $ 215,139 $ 1,596 $ 28,439 $ 236 $ 243,578 $ 1,832 Held-to-Maturity U.S Government agencies $ — $ — $ 14,219 $ 445 $ 14,219 $ 445 Mortgage-backed securities—residential issued by government sponsored entities 47,696 476 204,112 3,710 251,808 4,186 Total $ 47,696 $ 476 $ 218,331 $ 4,155 $ 266,027 $ 4,631 As of June 30, 2015 , the Company’s security portfolio consisted of 129 securities, 32 of which were in an unrealized loss position. The majority of unrealized losses are related to the Company’s mortgage-backed securities and variable-rate corporate securities. All of the mortgage-backed securities at June 30, 2015 and December 31, 2014 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, 2015 or December 31, 2014 . Investment securities having carrying values of approximately $347.3 million and $339.0 million at June 30, 2015 and December 31, 2014 , 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, 2015
Receivables [Abstract]
Loans	Loans Major classifications of loans, including loans held for sale, are as follows: (Dollars in thousands) June 30, 2015 December 31, 2014 Non-owner occupied commercial real estate $ 834,351 $ 798,556 Other commercial construction and land 182,283 200,755 Multifamily commercial real estate 76,754 89,132 1-4 family residential construction and land 78,572 68,658 Total commercial real estate 1,171,960 1,157,101 Owner occupied commercial real estate 1,030,111 1,046,736 Commercial and industrial 1,181,451 1,073,791 Lease financing 1,661 2,005 Total commercial 2,213,223 2,122,532 1-4 family residential 959,224 925,698 Home equity loans 375,271 378,475 Other consumer loans 341,590 272,453 Total consumer 1,676,085 1,576,626 Other 145,146 143,960 Total loans $ 5,206,414 $ 5,000,219 Total loans include $7.1 million and $5.5 million of 1 -4 family residential loans held for sale and $14.0 million and $10.1 million of net deferred loan origination costs and fees as of June 30, 2015 and December 31, 2014 , respectively. As of June 30, 2015 , other loans include $43.9 million , $81.1 million and $1.8 million of farm land, state and political subdivision obligations and deposit customer overdrafts, respectively. As of December 31, 2014 , other loans include $41.3 million , $76.9 million and $1.7 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", "Acquired 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 Capital Bank Corp. ("CBKN"), Green Bankshares ("GRNB"), Southern Community Financial ("SCMF" or "Southern Community") and TIB Financial ("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. As of June 30, 2015 , covered loans and OREO subject to the commercial shared-loss agreements expiring during the quarter ending September 30, 2015, were $91.9 million and $8.0 million , respectively. 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. Covered loans and OREO subject to the single family shared-loss agreements expiring during the quarter ending September 30, 2020, were $84.3 million and $0.4 million , respectively. 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. 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 Statements of Income, unless related to non-credit events. Additionally, if the Company has favorable changes in 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, the Company will first reverse any previously established allowance for loan and lease losses for the pool. If such estimate exceeds the amount of any previously established allowance, the Company 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 roll forward 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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Accretable Yield Balance at beginning of period $ 246,109 $ 346,995 $ 292,633 $ 383,775 Accretion of income (25,052 ) (31,021 ) (49,892 ) (64,183 ) Reclassification from nonaccretable difference 19,111 29,229 45,628 35,896 Other (7,718 ) (15,782 ) (55,919 ) (26,067 ) Balance at end of period $ 232,450 $ 329,421 $ 232,450 $ 329,421 Nonaccretable difference, balance at the end of the period $ 190,771 $ 232,776 $ 190,771 $ 232,776 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 agreements. Refer to Note 7 – Other Real Estate Owned for the covered balances of other real estate owned. Non-covered Loans The following is a summary of the major categories of non-covered loans outstanding as of June 30, 2015 and December 31, 2014 : (Dollars in thousands) Non-PCI Loans June 30, 2015 New Acquired PCI Loans Total Non-owner occupied commercial real estate $ 431,689 $ 56,370 $ 318,206 $ 806,265 Other commercial construction and land 74,556 217 96,649 171,422 Multifamily commercial real estate 41,943 6,873 23,372 72,188 1-4 family residential construction and land 75,749 — 2,823 78,572 Total commercial real estate 623,937 63,460 441,050 1,128,447 Owner occupied commercial real estate 750,869 39,653 197,410 987,932 Commercial and industrial loans 1,081,441 8,517 85,325 1,175,283 Lease financing 1,661 — — 1,661 Total commercial 1,833,971 48,170 282,735 2,164,876 1-4 family residential 632,566 37,927 240,590 911,083 Home equity loans 125,256 140,834 73,644 339,734 Other consumer loans 333,147 4,148 4,130 341,425 Total consumer 1,090,969 182,909 318,364 1,592,242 Other 106,473 2,418 35,755 144,646 Total loans $ 3,655,350 $ 296,957 $ 1,077,904 $ 5,030,211 (Dollars in thousands) Non-PCI Loans December 31, 2014 New Acquired PCI Loans Total Non-covered Loans Non-owner occupied commercial real estate $ 372,793 $ 58,552 $ 333,433 $ 764,778 Other commercial construction and land 66,817 161 123,398 190,376 Multifamily commercial real estate 47,765 12,327 24,377 84,469 1-4 family residential construction and land 58,046 — 9,742 67,788 Total commercial real estate 545,421 71,040 490,950 1,107,411 Owner occupied commercial real estate 745,728 38,122 215,059 998,909 Commercial and industrial loans 958,628 10,564 97,228 1,066,420 Lease financing 2,005 — — 2,005 Total commercial 1,706,361 48,686 312,287 2,067,334 1-4 family residential 560,106 43,921 269,768 873,795 Home equity loans 103,644 152,797 82,121 338,562 Other consumer loans 261,935 4,647 5,772 272,354 Total consumer 925,685 201,365 357,661 1,484,711 Other 99,610 3,603 39,903 143,116 Total loans $ 3,277,077 $ 324,694 $ 1,200,801 $ 4,802,572 Covered Loans The following is a summary of the major categories of covered loans outstanding as of June 30, 2015 , and December 31, 2014 : (Dollars in thousands) Non-PCI Loans June 30, 2015 New Acquired PCI Loans Total Non-owner occupied commercial real estate $ — $ — $ 28,086 $ 28,086 Other commercial construction and land — — 10,861 10,861 Multifamily commercial real estate — — 4,566 4,566 1-4 family residential construction and land — — — — Total commercial real estate — — 43,513 43,513 Owner occupied commercial real estate — — 42,179 42,179 Commercial and industrial loans — 211 5,957 6,168 Lease financing — — — — Total commercial — 211 48,136 48,347 1-4 family residential — 1,989 46,152 48,141 Home equity loans — 27,084 8,453 35,537 Other consumer loans — — 165 165 Total consumer — 29,073 54,770 83,843 Other — — 500 500 Total loans $ — $ 29,284 $ 146,919 $ 176,203 (Dollars in thousands) Non-PCI Loans December 31, 2014 New Acquired PCI Loans Total Covered Loans Non-owner occupied commercial real estate $ — $ — $ 33,778 $ 33,778 Other commercial construction and land — — 10,379 10,379 Multifamily commercial real estate — — 4,663 4,663 1-4 family residential construction and land — — 870 870 Total commercial real estate — — 49,690 49,690 Owner occupied commercial real estate — — 47,827 47,827 Commercial and industrial loans — 214 7,157 7,371 Lease financing — — — — Total commercial — 214 54,984 55,198 1-4 family residential — 1,512 50,391 51,903 Home equity loans — 30,473 9,440 39,913 Other consumer loans — — 99 99 Total consumer — 31,985 59,930 91,915 Other — — 844 844 Total loans $ — $ 32,199 $ 165,448 $ 197,647 The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of June 30, 2015 : (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due Non-accrual Non-purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 463 $ — $ — $ — $ 140 $ — $ 603 Other commercial construction and land 10 — — — 331 — 341 Multifamily commercial real estate — — — — — — — 1-4 family residential construction and land — — — — — — — Total commercial real estate 473 — — — 471 — 944 Owner occupied commercial real estate 1,724 — — — 3,736 — 5,460 Commercial and industrial loans 42 — — — 1,481 66 1,589 Lease financing — — — — — — — Total commercial 1,766 — — — 5,217 66 7,049 1-4 family residential 123 — — — 1,380 40 1,543 Home equity loans 835 — — — 1,387 306 2,528 Other consumer loans 2,603 — — — 940 — 3,543 Total consumer 3,561 — — — 3,707 346 7,614 Other — — — — — — — Total loans $ 5,800 $ — $ — $ — $ 9,395 $ 412 $ 15,607 (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due Non-accrual Purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 2,072 $ 101 $ 2,185 $ 298 $ — $ — $ 4,656 Other commercial construction and land 1,053 3 3,414 235 — — 4,705 Multifamily commercial real estate — — 406 — — — 406 1-4 family residential construction and land — — — — — — — Total commercial real estate 3,125 104 6,005 533 — — 9,767 Owner occupied commercial real estate 550 515 4,751 698 — — 6,514 Commercial and industrial loans 1,414 10 1,363 11 — — 2,798 Lease financing — — — — — — — Total commercial 1,964 525 6,114 709 — — 9,312 1-4 family residential 2,266 232 3,618 1,001 — — 7,117 Home equity loans 1,322 69 609 424 — — 2,424 Other consumer loans 146 — 25 — — — 171 Total consumer 3,734 301 4,252 1,425 — — 9,712 Other 55 — 43 — — — 98 Total loans $ 8,878 $ 930 $ 16,414 $ 2,667 $ — $ — $ 28,889 The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of December 31, 2014 : (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due and Still Accruing/Accreting Non-accrual Non-purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ — $ — $ — $ — $ 534 $ — $ 534 Other commercial construction and land 31 — — — 233 — 264 Multifamily commercial real estate — — — — — — — 1-4 family residential construction and land — — — — — — — Total commercial real estate 31 — — — 767 — 798 Owner occupied commercial real estate 744 — — — 2,524 — 3,268 Commercial and industrial loans 70 — — — 1,654 66 1,790 Lease financing — — — — — — — Total commercial 814 — — — 4,178 66 5,058 1-4 family residential 357 — — — 1,284 69 1,710 Home equity loans 627 225 — — 1,758 443 3,053 Other consumer loans 2,508 — — — 909 — 3,417 Total consumer 3,492 225 — — 3,951 512 8,180 Other 30 — — — 10 — 40 Total loans $ 4,367 $ 225 $ — $ — $ 8,906 $ 578 $ 14,076 (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due and Still Accruing/Accreting Non-accrual Purchased credit impaired loans * Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 1,314 $ — $ 4,036 $ 1,636 $ — $ — $ 6,986 Other commercial construction and land 2,789 — 9,928 2,696 — — 15,413 Multifamily commercial real estate 249 — 1,392 — — — 1,641 1-4 family residential construction and land — — — — — — — Total commercial real estate 4,352 — 15,356 4,332 — — 24,040 Owner occupied commercial real estate 2,531 — 3,957 1,029 — — 7,517 Commercial and industrial loans 240 — 4,485 92 — — 4,817 Lease financing — — — — — — — Total commercial 2,771 — 8,442 1,121 — — 12,334 1-4 family residential 3,480 352 5,251 2,010 — — 11,093 Home equity loans 1,524 335 788 780 — — 3,427 Other consumer loans 152 — 26 27 — — 205 Total consumer 5,156 687 6,065 2,817 — — 14,725 Other 2,012 — — — — — 2,012 Total loans $ 14,291 $ 687 $ 29,863 $ 8,270 $ — $ — $ 53,111 * 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 commercial 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 PCI loans by internal rating at June 30, 2015 : Substandard (Dollars in thousands) Pass Special Mention Accruing Non-accrual Doubtful Total Non-owner occupied commercial real estate $ 485,104 $ 1,180 $ 1,635 $ 140 $ — $ 488,059 Other commercial construction and land 74,369 46 27 331 — 74,773 Multifamily commercial real estate 48,816 — — — — 48,816 1-4 family residential construction and land 72,881 419 2,449 — — 75,749 Total commercial real estate 681,170 1,645 4,111 471 — 687,397 Owner occupied commercial real estate 773,935 9,097 3,754 3,736 — 790,522 Commercial and industrial loans 1,072,482 12,332 3,808 1,547 — 1,090,169 Lease financing 1,661 — — — — 1,661 Total commercial 1,848,078 21,429 7,562 5,283 — 1,882,352 1-4 family residential 668,621 256 2,185 1,420 — 672,482 Home equity loans 289,552 57 1,872 1,693 — 293,174 Other consumer loans 336,355 — — 940 — 337,295 Total consumer 1,294,528 313 4,057 4,053 — 1,302,951 Other 108,439 452 — — — 108,891 Total loans $ 3,932,215 $ 23,839 $ 15,730 $ 9,807 $ — $ 3,981,591 The following table summarizes loans, excluding PCI loans by internal rating at December 31, 2014 : Substandard (Dollars in thousands) Pass Special Mention Accruing Non-accrual Doubtful Total Non-owner occupied commercial real estate $ 429,126 $ 835 $ 850 $ 534 $ — $ 431,345 Other commercial construction and land 66,667 47 31 233 — 66,978 Multifamily commercial real estate 60,092 — — — — 60,092 1-4 family residential construction and land 56,551 — 1,495 — — 58,046 Total commercial real estate 612,436 882 2,376 767 — 616,461 Owner occupied commercial real estate 766,822 6,687 7,817 2,524 — 783,850 Commercial and industrial loans 963,273 2,235 2,178 1,720 — 969,406 Lease financing 2,005 — — — — 2,005 Total commercial 1,732,100 8,922 9,995 4,244 — 1,755,261 1-4 family residential 601,738 283 2,165 1,353 — 605,539 Home equity loans 282,597 59 2,057 2,201 — 286,914 Other consumer loans 265,673 — — 909 — 266,582 Total consumer 1,150,008 342 4,222 4,463 — 1,159,035 Other 102,730 473 — 10 — 103,213 Total loans $ 3,597,274 $ 10,619 $ 16,593 $ 9,484 $ — $ 3,633,970

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan and Lease Losses Activity in the allowance for loan and lease losses for the three and six months ended June 30, 2015 and 2014 is as follows: (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Balance, beginning of period $ 48,225 $ 55,606 $ 50,211 $ 56,851 Reversal of provision for loan losses for PCI loans (524 ) (940 ) (2,450 ) (3,428 ) PCI loans charged-off (162 ) — (162 ) — Provision for loan losses for non-PCI loans 1,823 2,344 2,908 4,808 Non-PCI loans charged-off (2,010 ) (2,176 ) (3,909 ) (4,132 ) Recoveries of non-PCI loans previously charged-off 711 473 1,465 1,208 Balance, end of period $ 48,063 $ 55,307 $ 48,063 $ 55,307 The following tables present the roll forward of the allowance for loan and lease losses for the three and six months ended June 30, 2015 by the class of loans against which the allowance is allocated: (Dollars in thousands) March 31, 2015 Provision/ Net (Charge-offs)/ June 30, 2015 Non-owner occupied commercial real estate $ 1,890 $ 2,012 $ 63 $ 3,965 Other commercial construction and land 12,575 (2,158 ) 5 10,422 Multifamily commercial real estate 223 (22 ) — 201 1-4 family residential construction and land 1,020 334 2 1,356 Total commercial real estate 15,708 166 70 15,944 Owner occupied commercial real estate 2,575 279 (95 ) 2,759 Commercial and industrial loans 9,217 35 203 9,455 Lease financing — — — — Total commercial 11,792 314 108 12,214 1-4 family residential 13,530 (504 ) (57 ) 12,969 Home equity loans 2,789 61 (197 ) 2,653 Other consumer loans 4,142 918 (983 ) 4,077 Total consumer 20,461 475 (1,237 ) 19,699 Other 264 344 (402 ) 206 Total loans $ 48,225 $ 1,299 $ (1,461 ) $ 48,063 (Dollars in thousands) December 31, 2014 Provision/ Net(Charge-offs)/ June 30, 2015 Non-owner occupied commercial real estate $ 2,022 $ 1,877 $ 66 $ 3,965 Other commercial construction and land 12,181 (1,925 ) 166 10,422 Multifamily commercial real estate 252 (51 ) — 201 1-4 family residential construction and land 1,102 251 3 1,356 Total commercial real estate 15,557 152 235 15,944 Owner occupied commercial real estate 2,504 462 (207 ) 2,759 Commercial and industrial loans 9,502 (347 ) 300 9,455 Lease financing — — — — Total commercial 12,006 115 93 12,214 1-4 family residential 15,451 (2,214 ) (268 ) 12,969 Home equity loans 2,815 103 (265 ) 2,653 Other consumer loans 4,122 1,671 (1,716 ) 4,077 Total consumer 22,388 (440 ) (2,249 ) 19,699 Other 260 631 (685 ) 206 Total loans $ 50,211 $ 458 $ (2,606 ) $ 48,063 The following tables present the roll forward of the allowance for loan and lease 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 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)/ June 30, 2014 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 and lease losses for PCI and non-PCI loans for the three and six months ended June 30, 2015 and 2014 , by the class of loans against which the allowance is allocated: (Dollars in thousands) Three Months Ended June 30, 2015 June 30, 2014 Non-PCI PCI Total Non-PCI PCI Total Allowance for loan and lease losses at the beginning of the period $ 21,295 $ 26,930 $ 48,225 $ 20,194 $ 35,412 $ 55,606 Charge-offs: Non-owner occupied commercial real estate — — — (204 ) — (204 ) Other commercial construction and land — — — 1 — 1 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land — — — 1 — 1 Total commercial real estate — — — (202 ) — (202 ) Owner occupied commercial real estate (95 ) — (95 ) (8 ) — (8 ) Commercial and industrial loans (41 ) — (41 ) (106 ) — (106 ) Lease financing — — — — — — Total commercial (136 ) — (136 ) (114 ) — (114 ) 1-4 family residential (80 ) — (80 ) (80 ) — (80 ) Home equity loans (247 ) — (247 ) (465 ) — (465 ) Other consumer loans (969 ) (162 ) (1,131 ) (781 ) — (781 ) Total consumer (1,296 ) (162 ) (1,458 ) (1,326 ) — (1,326 ) Other (578 ) — (578 ) (534 ) — (534 ) Total charge-offs (2,010 ) (162 ) (2,172 ) (2,176 ) — (2,176 ) Recoveries: Non-owner occupied commercial real estate 63 — 63 77 — 77 Other commercial construction and land 5 — 5 4 — 4 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land 2 — 2 2 — 2 Total commercial real estate 70 — 70 83 — 83 Owner occupied commercial real estate — — — 1 — 1 Commercial and industrial loans 244 — 244 34 — 34 Lease financing — — — — — — Total commercial 244 — 244 35 — 35 1-4 family residential 23 — 23 4 — 4 Home equity loans 50 — 50 33 — 33 Other consumer loans 148 — 148 146 — 146 Total consumer 221 — 221 183 — 183 Other 176 — 176 172 — 172 Total recoveries 711 — 711 473 — 473 Net charge-offs (1,299 ) (162 ) (1,461 ) (1,703 ) — (1,703 ) Provision (reversal) for loan and lease losses: Non-owner occupied commercial real estate (47 ) 2,059 2,012 159 626 785 Other commercial construction and land 66 (2,224 ) (2,158 ) (1 ) 2,606 2,605 Multifamily commercial real estate (20 ) (2 ) (22 ) (13 ) 90 77 1-4 family residential construction and land 144 190 334 (36 ) 105 69 Total commercial real estate 143 23 166 109 3,427 3,536 Owner occupied commercial real estate 294 (15 ) 279 (183 ) (23 ) (206 ) Commercial and industrial loans (134 ) 169 35 347 172 519 Lease financing — — — (1 ) 1 — Total commercial 160 154 314 163 150 313 1-4 family residential 25 (529 ) (504 ) 303 (3,472 ) (3,169 ) Home equity loans 229 (168 ) 61 473 (626 ) (153 ) Other consumer loans 942 (24 ) 918 899 104 1,003 Total consumer 1,196 (721 ) 475 1,675 (3,994 ) (2,319 ) Other 324 20 344 397 (523 ) (126 ) Total provision (reversal) for loan and lease losses 1,823 (524 ) 1,299 2,344 (940 ) 1,404 Allowance for loan and lease losses at the end of the period $ 21,819 $ 26,244 $ 48,063 $ 20,835 $ 34,472 $ 55,307 (Dollars in thousands) Six Months Ended June 30, 2015 June 30, 2014 Non-PCI PCI Total Non-PCI PCI Total Allowance for loan and lease losses at the beginning of the period $ 21,355 $ 28,856 $ 50,211 $ 18,951 $ 37,900 $ 56,851 Charge-offs: Non-owner occupied commercial real estate (8 ) — (8 ) (204 ) — (204 ) Other commercial construction and land — — — (207 ) — (207 ) Multifamily commercial real estate — — — (2 ) — (2 ) 1-4 family residential construction and land — — — — — — Total commercial real estate (8 ) — (8 ) (413 ) — (413 ) Owner occupied commercial real estate (207 ) — (207 ) (144 ) — (144 ) Commercial and industrial loans (95 ) — (95 ) (161 ) — (161 ) Lease financing — — — — — — Total commercial (302 ) — (302 ) (305 ) — (305 ) 1-4 family residential (295 ) — (295 ) (101 ) — (101 ) Home equity loans (407 ) — (407 ) (594 ) — (594 ) Other consumer loans (1,836 ) (162 ) (1,998 ) (1,588 ) — (1,588 ) Total consumer (2,538 ) (162 ) (2,700 ) (2,283 ) — (2,283 ) Other (1,061 ) — (1,061 ) (1,131 ) — (1,131 ) Total charge-offs (3,909 ) (162 ) (4,071 ) (4,132 ) — (4,132 ) Recoveries: Non-owner occupied commercial real estate 66 — 66 90 — 90 Other commercial construction and land 174 — 174 12 — 12 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land 3 — 3 4 — 4 Total commercial real estate 243 — 243 106 — 106 Owner occupied commercial real estate — — — 24 — 24 Commercial and industrial loans 395 — 395 166 — 166 Lease financing — — — — — — Total commercial 395 — 395 190 — 190 1-4 family residential 27 — 27 7 — 7 Home equity loans 142 — 142 114 — 114 Other consumer loans 282 — 282 314 — 314 Total consumer 451 — 451 435 — 435 Other 376 — 376 477 — 477 Total recoveries 1,465 — 1,465 1,208 — 1,208 Net charge-offs (2,444 ) (162 ) (2,606 ) (2,924 ) — (2,924 ) Provision (reversal) for loan losses: Non-owner occupied commercial real estate (15 ) 1,892 1,877 181 (215 ) (34 ) Other commercial construction and land (138 ) (1,787 ) (1,925 ) 499 2,981 3,480 Multifamily commercial real estate (24 ) (27 ) (51 ) (24 ) 184 160 1-4 family residential construction and land 115 136 251 (70 ) 141 71 Total commercial real estate (62 ) 214 152 586 3,091 3,677 Owner occupied commercial real estate 594 (132 ) 462 39 (1,052 ) (1,013 ) Commercial and industrial loans (347 ) — (347 ) 382 (52 ) 330 Lease financing 1 (1 ) — (2 ) — (2 ) Total commercial 248 (133 ) 115 419 (1,104 ) (685 ) 1-4 family residential 132 (2,346 ) (2,214 ) 557 (5,049 ) (4,492 ) Home equity loans 284 (181 ) 103 614 287 901 Other consumer loans 1,689 (18 ) 1,671 2,087 (64 ) 2,023 Total consumer 2,105 (2,545 ) (440 ) 3,258 (4,826 ) (1,568 ) Other 617 14 631 545 (589 ) (44 ) Total provision (reversal) for loan losses 2,908 (2,450 ) 458 4,808 (3,428 ) 1,380 Allowance for loan losses at the end of the period $ 21,819 $ 26,244 $ 48,063 $ 20,835 $ 34,472 $ 55,307 The following table presents the balance in the allowance for loan and lease losses and the recorded investment in loans by class of loan and by impairment evaluation method as of June 30, 2015 : (Dollars in thousands) Allowance for Loan and Lease Losses Loans Individually Collectively Purchased Individually Collectively Purchased Non-owner occupied commercial real estate $ 2 $ 1,612 $ 2,351 $ 463 $ 487,596 $ 346,292 Other commercial construction and land — 1,440 8,982 — 74,773 107,510 Multifamily commercial real estate — 102 99 — 48,816 27,938 1-4 family residential construction and land — 856 500 — 75,749 2,823 Total commercial real estate 2 4,010 11,932 463 686,934 484,563 Owner occupied commercial real estate 517 1,999 243 5,855 784,667 239,589 Commercial and industrial loans — 7,696 1,759 1,996 1,088,173 91,282 Lease financing — — — — 1,661 — Total commercial 517 9,695 2,002 7,851 1,874,501 330,871 1-4 family residential 5 2,699 10,265 73 665,282 286,742 Home equity loans 14 643 1,996 204 292,970 82,097 Other consumer loans 9 3,957 111 198 337,097 4,295 Total consumer 28 7,299 12,372 475 1,295,349 373,134 Other — 268 (62 ) — 108,891 36,255 Total loans $ 547 $ 21,272 $ 26,244 $ 8,789 $ 3,965,675 $ 1,224,823 (1) Loans collectively evaluated for impairment include $326.0 million of acquired loans which are presented net of unamortized purchase discounts of $9.7 million . The following table presents the balance in the allowance for loan and lease losses and the recorded investment in loans by class of loan and by impairment evaluation method as of December 31, 2014 : (Dollars in thousands) Allowance for Loan and Lease Losses Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Purchased Credit- Impaired Individually Evaluated for Impairment Collectively Evaluated for Impairment (1) Purchased Credit- Impaired Non-owner occupied commercial real estate $ — $ 1,563 $ 459 $ — $ 431,345 $ 367,211 Other commercial construction and land — 1,411 10,770 — 66,978 133,777 Multifamily commercial real estate — 126 126 — 60,092 29,040 1-4 family residential construction and land — 739 363 — 58,046 10,612 Total commercial real estate — 3,839 11,718 — 616,461 540,640 Owner occupied commercial real estate — 2,129 375 3,423 780,427 262,886 Commercial and industrial loans — 7,742 1,760 2,704 966,702 104,385 Lease financing — — — — 2,005 — Total commercial — 9,871 2,135 6,127 1,749,134 367,271 1-4 family residential — 2,840 12,611 745 599,278 320,159 Home equity loans — 639 2,176 325 286,589 91,561 Other consumer loans 15 3,815 292 221 266,361 5,871 Total consumer 15 7,294 15,079 1,291 1,152,228 417,591 Other — 336 (76 ) — 103,213 40,747 Total loans $ 15 $ 21,340 $ 28,856 $ 7,418 $ 3,621,036 $ 1,366,249 (1) Loans collectively evaluated for impairment include $355.4 million of acquired loans which are presented net of unamortized purchase discounts of $11.7 million . Troubled Debt Restructuring 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 and lease losses is established for the loan. During the three and six months ended June 30, 2015 and 2014 , loans modified in TDRs were nominal. Because of the insignificance 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 and lease losses at June 30, 2015 and 2014 . The Company had loans modified in TDRs with recorded investments of $0.4 million and $0.9 million for the three and six months ended June 30, 2015 , respectively. 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.

FDIC Indemnification Asset

FDIC Indemnification Asset	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
FDIC Indemnification Asset	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. As of June 30, 2015 , covered loans and OREO subject to the commercial shared-loss agreements that expire during the quarter ending September 30, 2015, were $91.9 million and $8.0 million , respectively. The following is a summary of the activity in the FDIC indemnification asset: (Dollars in thousands) Balance, December 31, 2014 $ 16,762 Indemnification asset income 129 Amortization of indemnification asset (5,067 ) Cash received on reimbursable losses (60 ) Balance, June 30, 2015 $ 11,764 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

Other Real Estate Owned

Other Real Estate Owned	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Other Real Estate Owned	Other Real Estate Owned The activity within Other Real Estate Owned (“OREO”) for the three and six months ended June 30, 2015 and 2014 is presented in the table below. Ending balances for OREO covered by loss sharing agreements with the FDIC for these periods were $8.4 million and $17.0 million , respectively. Non-covered OREO ending balances for these periods were $55.3 million and $79.3 million , respectively. For the three and six months ended June 30, 2015 , proceeds on sales of OREO were $10.9 million and $18.8 million , respectively and net gains on sales were $1.0 million in each period. For the three and six months ended June 30, 2014 , proceeds on sales of OREO were $32.3 million and $48.3 million , respectively and net gains were $3.2 million and $3.9 million , respectively. (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Balance, beginning of period $ 71,453 $ 120,270 $ 77,626 $ 129,396 Real estate acquired from borrowers 3,959 8,159 7,058 17,864 Valuation allowance (1,710 ) (3,022 ) (3,100 ) (6,595 ) Properties sold (9,965 ) (29,124 ) (17,847 ) (44,382 ) Balance, end of period $ 63,737 $ 96,283 $ 63,737 $ 96,283

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances and Short-Term Borrowings	6 Months Ended
	Jun. 30, 2015
Advances from Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances and Short-Term Borrowings	Federal Home Loan Bank Advances and Short-Term Borrowings Short-term borrowings include 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 overnight 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, 2015 and December 31, 2014 were $18.5 million and $23.4 million , respectively, and were collateralized by $24.9 million and $34.9 million , respectively, of agency mortgage-backed securities. 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, 2015 and December 31, 2014 provided for incremental borrowing availability of up to $331.4 million and $247.7 million , respectively. At June 30, 2015 and December 31, 2014 , the Bank had $25.4 million and $25.7 million in letters of credit issued by the FHLB respectively, of which $25.2 million are used as collateral for public funds deposits in lieu of pledging securities to the State of Florida. The advances as of June 30, 2015 and December 31, 2014 consisted of the following: (Dollars in thousands) Contractual June 30, 2015 Maturity Date Interest Rate as of June 30, 2015 $ 105,000 May 19, 2016 0.36% 50,000 December 31, 2019 0.20% (1 Month FRC + 2 bps)* 502 November 6, 2017 0.50% 50,000 November 20, 2017 0.21% (1 Month FRC + 2 bps)* 50,000 November 23, 2018 0.21% (1 Month FRC + 2 bps)* 40,000 November 25, 2016 0.21% (1 Month FRC + 2 bps)* 60,000 May 28, 2020 0.20% (1 Month FRC + 2 bps)* 493 February 10, 2026 —% $ 355,995 (Dollars in thousands) Contractual Outstanding Amount December 31, 2014 Maturity Date Interest Rate as of December 31, 2014 $ 105,000 May 19, 2015 0.36% 40,000 November 25, 2016 0.25% (1 Month FRC + 2 bps)* 578 November 6, 2017 0.50% 50,000 November 20, 2017 0.25% (1 Month FRC + 2 bps)* 50,000 November 23, 2018 0.26% (1 Month FRC + 2 bps)* 50,000 December 31, 2019 0.21% (1 Month FRC + 2 bps)* 513 February 10, 2026 —% $ 296,091 (*) FRC = FHLB Fixed Rate Credit interest rate.

Long-Term Borrowings

Long-Term Borrowings	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Long-Term Borrowings	Long-Term Borrowings Structured repurchase agreements During the three months ended June 30, 2015, the Company prepaid $52.3 million of repurchase agreements acquired through the Company's legacy acquisitions. The Company recorded a $1.6 million loss on extinguishment of debt as a result of this prepayment. The repurchase agreements as of December 31, 2014 consisted of the following: (Dollars in thousands) Carrying Amount December 31, 2014 Contractual Amount Maturity Date Contractual Rate $ 10,540 $ 10,000 November 6, 2016 4.75% 10,582 10,000 March 30, 2017 4.50% 10,394 10,000 December 18, 2017 3.79% 10,372 10,000 December 18, 2017 3.72% 10,638 10,000 March 22, 2019 3.56% $ 52,526 $ 50,000 These repurchase agreements had a weighted-average rate of 4.06% at December 31, 2014 and were collateralized by $61.4 million 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. The subordinated debentures as of June 30, 2015 and December 31, 2014 consisted of the following: (Dollars in thousands) Carrying Amount Date of Offering Face Amount June 30, 2015 December 31, 2014 Interest Rate as of June 30, 2015 Maturity Date July 31, 2001 $ 5,000 $ 3,929 $ 3,900 3.86 % (3 Month LIBOR + 358 bps) July 31, 2031 July 31, 2001 4,000 2,732 2,699 3.86 % (3 Month LIBOR + 358 bps) July 31, 2031 June 26, 2003 10,000 6,067 6,017 3.38 % (3 Month LIBOR + 310 bps) June 26, 2033 September 25, 2003 10,000 6,591 6,516 3.13 % (3 Month LIBOR + 285 bps) October 8, 2033 December 30, 2003 10,000 5,853 5,802 3.13 % (3 Month LIBOR + 285 bps) December 30, 2033 June 28, 2005 3,000 1,620 1,594 1.97 % (3 Month LIBOR + 168 bps) June 28, 2035 December 22, 2005 10,000 4,668 4,607 1.69 % (3 Month LIBOR + 140 bps) March 15, 2036 December 28, 2005 13,000 6,775 6,668 1.83 % (3 Month LIBOR + 154 bps) March 15, 2036 June 23, 2006 20,000 11,636 11,488 1.83 % (3 Month LIBOR + 155 bps) July 7, 2036 May 16, 2007 56,000 29,340 28,904 1.94 % (3 Month LIBOR + 165 bps) June 15, 2037 June 15, 2007 10,000 5,477 5,426 1.71 % (3 Month LIBOR + 143 bps) September 6, 2037 $ 151,000 $ 84,688 $ 83,621 Other Subordinated Debentures On April 1, 2015, the Company prepaid a subordinated promissory note with a fixed interest rate of 10.0% due March 18, 2020 assumed through the acquisition of CBKN. The Company recorded a $0.1 million gain on extinguishment of debt as a result of this prepayment. The note had a carrying value of $3.5 million as of March 31, 2015 and December 31, 2014. At June 30, 2015 , the maturities of long-term borrowings were as follows: (Dollars in thousands) Fixed Rate Floating Rate Total Due in 2015 $ — $ — $ — Due in 2016 — — — Due in 2017 — — — Due in 2018 — — — Due in 2019 — — — Thereafter — 84,688 84,688 Total $ — $ 84,688 $ 84,688

Shareholders' Equity and Minimu

Shareholders' Equity and Minimum Regulatory Capital Requirements	6 Months Ended
	Jun. 30, 2015
Regulatory Capital Requirements [Abstract]
Shareholders' Equity and Minimum Regulatory Capital Requirements	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 common, Tier 1 risk-based and Total Risk-based ratios. At June 30, 2015 and December 31, 2014 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 June 30, 2015 Amount Ratio Amount Ratio Amount Ratio Tier 1 Leverage Capital (to Average Assets) CBF Consolidated N/A N/A $269,111 ≥ 4.0% $ 986,167 14.7% Capital Bank, N.A. $334,648 ≥ 5.0% $267,718 ≥ 4.0% $ 745,997 11.2% Tier 1 Common Equity Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $256,127 ≥ 4.5% $ 914,613 16.1% Capital Bank, N.A. $367,868 ≥ 6.5% $254,678 ≥ 4.5% $ 745,997 13.2% Tier 1 Risk-based Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $341,503 ≥ 6.0% $ 986,167 17.3% Capital Bank, N.A. $452,761 ≥ 8.0% $339,571 ≥ 6.0% $ 745,997 13.2% Total Risk-based Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $455,337 ≥ 8.0% $ 1,034,687 18.2% Capital Bank, N.A. $565,951 ≥ 10.0% $452,761 ≥ 8.0% $ 797,910 14.1% (Dollars in thousands) Well Capitalized Requirement Adequately Capitalized Requirement Actual December 31, 2014 Amount Ratio Amount Ratio Amount Ratio Tier 1 Capital (to Average Assets) CBF Consolidated N/A N/A $261,445 ≥ 4.0% $ 933,335 14.3% Capital Bank, N.A. $326,050 ≥ 5.0% $260,840 ≥ 4.0% $ 881,395 13.5% Tier 1 Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $207,370 ≥ 4.0% $ 933,335 18.0% Capital Bank, N.A. $310,245 ≥ 6.0% $206,830 ≥ 4.0% $ 881,395 17.0% Total Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $414,740 ≥ 8.0% $ 987,535 19.1% Capital Bank, N.A. $517,074 ≥ 10.0% $413,660 ≥ 8.0% $ 935,455 18.1% In August 2010, Capital Bank, NA entered into an Operating Agreement with the Office of the Comptroller of the Currency (the “OCC Operating Agreement”). 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, 2015 and December 31, 2014 , 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 requires prior approval from the OCC before paying a dividend to the Company. 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. Subsequent to receiving approval from the OCC, the Company received dividends from the bank totaling $199.4 million , $56.0 million and $105.0 million on January 30, 2015, July 15, 2014 and September 24, 2013, respectively. The Company may use these dividends for general corporate purposes including acquisitions, or as a return of capital to shareholders through future share repurchases or dividends. In July 2013, the U.S. banking regulators adopted a final rule which implements the Basel III regulatory capital reforms from the Basel Committee on Banking Supervision, and certain changes required by the Dodd-Frank Act. The final rule established an integrated regulatory capital framework and introduces the “Standardized Approach” for risk-weighted assets, which replaces the Basel I risk-based guidance for determining risk-weighted assets as of January 1, 2015, the date the Company became subject to the new rules. Based on the Company's current capital composition and levels, the Company believes it is in compliance with the requirements as set forth in the final rules. The rules include new risk-based capital and leverage ratios, which will be phased in from 2015 to 2019, and refine the definition of what constitutes “capital” for purposes of calculating those ratios. The new minimum capital level requirements applicable to the Company and the Bank under the final rules are as follows: (i) a new common equity Tier 1 capital ratio of 4.5%; (ii) a Tier 1 capital ratio of 6% (increased from 4%); (iii) a total capital ratio of 8% (unchanged from previous rules); and (iv) a Tier 1 leverage ratio of 4% for all institutions. The final rules also establish a “capital conservation buffer” above the new regulatory minimum capital requirements. The capital conservation buffer will be phased-in over four years beginning on January 1, 2016, as follows: the maximum buffer will be 0.625% of risk-weighted assets for 2016, 1.25% for 2017, 1.875% for 2018, and 2.5% for 2019 and thereafter. This will result in the following minimum ratios beginning in 2019: (i) a common equity Tier 1 capital ratio of 7.0%, (ii) a Tier 1 capital ratio of 8.5%, and (iii) a total capital ratio of 10.5%. Under the final rules, institutions are subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if its capital level falls below the buffer amount. These limitations establish a maximum percentage of eligible retained income that could be utilized for such actions. As of June 30, 2015 , our capital buffer would be 6.10% ; exceeding the 2.5% 2019 requirement. The final rules also contain revisions to the prompt corrective action framework, which is designed to place restrictions on insured depository institutions if their capital levels begin to show signs of weakness. Under the prompt corrective action requirements, which are designed to complement the capital conservation buffer, insured depository institutions are now required to meet the following increased capital level requirements in order to qualify as “well capitalized:” (i) a new common equity Tier 1 capital ratio of 6.5%; (ii) a Tier 1 capital ratio of 8% (increased from 6%); (iii) a total capital ratio of 10% (unchanged from previous rules); and (iv) a Tier 1 leverage ratio of 5% (unchanged from previous rules). Dividend Program The Company's board of directors has approved a quarterly common dividend program commencing in the third quarter at an amount to be determined. Share Repurchases The Company’s Board of Directors authorized stock repurchase plans of up to $300.0 million . Stock repurchases may be made from time to time, on the open market or in privately negotiated transactions. The approved stock repurchase programs do not obligate the Company to repurchase any particular amount of shares, and the programs may be extended, modified, suspended, or discontinued at any time. During the three months ended June 30, 2015, the Company did not repurchase any stock under the aforementioned plans. During the six months ended June 30, 2015 , the Company repurchased $25.0 million , or 961,257 common shares at an average price of $25.99 per share. As of June 30, 2015 , the Company has repurchased a total of $198.2 million , or 9,046,956 common shares at an average price of $21.91 per share with $101.8 million of remaining availability for future share repurchases. The Company accounts for treasury stock using the cost method as a reduction of shareholders’ equity in the accompanying Consolidated Balance Sheets and Statements of Changes in Shareholders’ Equity.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation As of June 30, 2015 , 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, 2015 and 2014 : (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Stock options $ 104 $ 171 $ 288 $ 366 Restricted stock 4 849 104 1,382 Total stock-based compensation expense $ 108 $ 1,020 $ 392 $ 1,748 The tax benefit related to stock-based compensation expense arising from restricted stock awards and non-qualified stock options was $41 thousand and $391 thousand for the three months ended June 30, 2015 and 2014 , respectively and $150 thousand and $670 thousand for the six months ended June 30, 2015 and 2014 , respectively. At June 30, 2015 , there was no unrecognized stock-based compensation expense related to stock options and restricted stock. Stock Options Under the 2010 Plan 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, 2015 and 2014. ASC 718 requires the recognition of stock-based compensation expense for the number of awards that are ultimately expected to vest. During the three and six months ended June 30, 2015 and 2014 , 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, 2015 and 2014 is as follows: Six Months Ended June 30, 2015 June 30, 2014 (Shares in thousands) Shares Weighted Shares Weighted Balance, January 1, 3,111 $ 20.26 3,123 $ 20.50 Granted — — — — Exercised — — — — Canceled, expired or forfeited (2 ) 372.68 (9 ) 59.60 Balance, June 30, 3,109 $ 20.12 3,114 $ 20.39 At June 30, 2015 , the weighted average remaining contractual life for outstanding stock options was approximately 5.15 years and the aggregate intrinsic values were $28.6 million 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, 2015 were as follows: (Shares in thousands) Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted Average Remaining Contractual Life Weighted Average Exercise Price Per Share Shares Weighted Average Exercise Price Per Share $18.00 236 7.89 years $ 18.00 236 $ 18.00 $20.00 2,864 4.93 years 20.00 2,864 20.00 $28.44 - $2,026.00 9 3.09 years 108.52 9 108.52 $18.00 - $2,026.00 3,109 5.15 years $ 20.12 3,109 $ 20.12 Restricted Stock 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 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. No restricted stock awards were granted under the 2013 Plan during the three and six months ended June 30, 2015 and 2014. On May 22, 2015, 405,129 restricted stock awards vested upon achievement of the $28.00 stock price goal. The Company recognized $2.2 million in excess tax benefits relating to the vesting of such awards. The following table summarizes unvested restricted stock activity for the six months ended June 30, 2015 and 2014 : Six Months Ended June 30, 2015 June 30, 2014 (Shares in thousands) Shares Weighted Shares Weighted Balance, January 1, 810 $ 13.89 1,215 $ 14.28 Granted — — — — Vested or released (405 ) 14.33 (405 ) 15.07 Canceled, expired or forfeited — — — — Balance, June 30, 405 $ 13.45 810 $ 13.89

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes A reconciliation of income tax computed at applicable Federal statutory income tax rates to total income tax expense reported for the three and six months ended June 30, 2015 and 2014 is as follows: (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Income before income taxes $ 20,247 $ 20,041 $ 38,090 $ 38,663 Income taxes computed at Federal statutory tax rate 7,086 7,014 13,331 13,532 Effect of: — State taxes (net of federal benefit) 783 738 1,235 1,483 Tax-exempt interest income, net (60 ) (158 ) (549 ) (333 ) Contingent value right expense (CVR) (118 ) 114 (118 ) 383 Other, net (434 ) (92 ) (188 ) (241 ) Total income tax expense $ 7,257 $ 7,616 $ 13,711 $ 14,824 The Company uses an estimated annual effective tax rate method of computing its interim tax provision. The effective tax rate is based on forecasted annual pre-tax income, permanent differences and statutory tax rates. For the three and six months ended June 30, 2015 , the effective income tax rate was 36% . For the three and six months ended June 30, 2014 , the effective income tax rate was 38% . The change in effective income tax rate was mainly due to the favorable impact from higher tax-exempt interest income and lower non-deductible CVR expense in the current year. 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, 2015 and December 31, 2014 were $117.2 million and $129.6 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, 2015 and December 31, 2014 . At June 30, 2015 and December 31, 2014 , the company had $79.2 million and $91.1 million of gross federal net operating loss carryforwards, respectively, which begin to expire after 2029 if unused and are subject to annual cumulative limitation of $10.9 million . At June 30, 2015 and December 31, 2014 , the Company had no unrecognized tax benefits and no amounts recorded for uncertain tax positions.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value	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 Cash and cash equivalents include cash on hand and highly-liquid items with an original maturity of three months or less. Accordingly, the carrying amount of such instruments is considered to be a reasonable estimate of fair value. Derivative financial instruments Interest rate swaps are valued by a third party, using models that primarily use market observable inputs, such as yield curves, and are validated by comparison with valuations provided by the respective counterparties. The credit risk associated with derivative financial instruments that are subject to master netting agreements is measured on a net basis by counterparty portfolio. Forward loan sales agreements 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 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 other debt securities that are not actively traded, custom discounted cash flow modeling (Level 3 inputs). As of June 30, 2015 , 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 and lease 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. The Company considers 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, 2015 , 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 as of June 30, 2015 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Trading securities $ 2,898 $ — $ 2,898 $ — Available-for-sale securities: Mortgage-backed securities—residential 572,993 — 572,993 — Industrial revenue bonds 3,503 — — 3,503 Corporate bonds 23,642 — 23,642 — Available-for-sale securities $ 600,138 $ — $ 596,635 $ 3,503 Gross asset value of derivatives $ 125 $ — $ 125 $ — Liabilities Gross liability value of derivatives $ 713 $ — $ 713 $ — There were no transfers of assets and liabilities between levels of the fair value hierarchy during the six months ended June 30, 2015 . Assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Trading securities $ 2,410 $ — $ 2,410 $ — Available-for-sale securities: Mortgage-backed securities-residential 552,203 — 552,203 — Industrial revenue bonds 3,690 — — 3,690 Available-for-sale securities $ 555,893 $ — $ 552,203 $ 3,690 Gross asset value of derivatives $ 4 $ — $ 4 $ — Liabilities Gross liability value of derivatives $ 26 $ — $ 26 $ — There were no transfers of assets and liabilities between levels of the fair value hierarchy during the year ended December 31, 2014 . The table below presents 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, 2015 : (Dollars in thousands) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Industrial Revenue Bonds Beginning balance, April 1, 2015 $ 3,537 Principal reduction — Included in other comprehensive income (34 ) Ending balance, June 30, 2015 $ 3,503 (Dollars in thousands) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Industrial Revenue Bonds Beginning balance, January 1, 2015 $ 3,690 Principal reduction (170 ) Included in other comprehensive income (17 ) Ending balance, June 30, 2015 $ 3,503 The table below presents 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, April 1, 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 Quantitative Information about Recurring Level 3 Fair Value Measurements (Dollars in thousands) Fair Value at Valuation Technique Significant Range Industrial revenue bonds $ 3,503 Discounted cash flow Discount rate 3.5% - 3.6% Illiquidity factor 0.5% (Dollars in thousands) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Input Range Industrial revenue bonds $ 3,690 Discounted cash flow Discount rate 3.5% - 3.6% Illiquidity factor 0.5% Assets and Liabilities Measured on a Nonrecurring Basis Assets and liabilities measured at fair value on a nonrecurring basis as of June 30, 2015 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Other real estate owned $ — $ — $ 41,292 Other repossessed assets — 189 — Impaired loans — — 204 Other real estate owned measured at fair value as of June 30, 2015 had a carrying amount of $54.4 million , less valuation allowances totaling $13.1 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 as of December 31, 2014 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Other real estate owned $ — $ — $ 66,048 Other repossessed assets — 150 — Impaired loans — — 754 Other real estate owned measured at fair value as of December 31, 2014 had a carrying amount of $85.1 million , less valuation allowances totaling $19.1 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 Weighted Average Other real estate owned $ 41,292 Fair value of property Appraised value less cost to sell 7.82% Impaired loans 204 Fair value of collateral Appraised value less cost to sell 7.10% (Dollars in thousands) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Input Weighted Average Other real estate owned $ 66,048 Fair value of property Appraised value less cost to sell 7.86% Impaired loans 754 Fair value of collateral Appraised value less cost to sell 7.60% Carrying amount and estimated fair values of financial instruments were as follows: (Dollars in thousands) Fair Value Measurement June 30, 2015 Carrying Value Estimated Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 201,286 $ 201,286 $ 201,286 $ — $ — Trading securities 2,898 2,898 — 2,898 — Investment securities available-for-sale 600,138 600,138 — 596,635 3,503 Investment securities held-to-maturity 426,427 431,764 — 431,764 — Loans, net 5,158,351 5,251,624 — 7,127 5,244,497 FDIC indemnification asset 11,764 11,764 — — 11,764 Receivable from FDIC 2,652 2,652 — 2,652 — Other earning assets (1) 52,651 52,651 — — 52,651 Gross asset value of derivatives 125 125 — 125 — Total financial assets $ 6,456,292 $ 6,554,902 $ 201,286 $ 1,041,201 $ 5,312,415 Financial Liabilities Non-contractual deposits $ 3,970,613 $ 3,970,613 $ — $ — $ 3,970,613 Contractual deposits 1,521,810 1,516,474 — — 1,516,474 Federal Home Loan Bank advances 355,995 355,990 — 355,990 — Short-term borrowings 18,466 18,466 — 18,466 — Subordinated debentures 84,688 96,612 — — 96,612 Gross liability value of derivatives 713 713 — 713 — Total financial liabilities $ 5,952,285 $ 5,958,868 $ — $ 375,169 $ 5,583,699 (1) Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stocks. (Dollars in thousands) Fair Value Measurement December 31, 2014 Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 188,135 $ 188,135 $ 188,135 $ — $ — Trading securities 2,410 2,410 — 2,410 — Investment securities available-for-sale 555,893 555,893 — 552,203 3,690 Investment securities held-to-maturity 436,962 443,379 — 443,379 — Loans, net 4,950,008 5,058,352 — 5,516 5,052,836 FDIC indemnification asset 16,762 16,762 — — 16,762 Receivable from FDIC 3,661 3,661 — 3,661 — Other earning assets (1) 50,943 50,943 — — 50,943 Gross asset value of derivatives 4 4 — 4 — Total financial assets $ 6,204,778 $ 6,319,539 $ 188,135 $ 1,007,173 $ 5,124,231 Financial Liabilities Non-contractual deposits $ 3,836,400 $ 3,836,400 $ — $ — $ 3,836,400 Contractual deposits 1,418,700 1,415,122 — — 1,415,122 Federal Home Loan Bank advances 296,091 296,038 — 296,038 — Short-term borrowings 23,407 23,407 — 23,407 — Long-term borrowings 52,526 54,235 — — 54,235 Subordinated debentures 87,155 97,913 — — 97,913 Gross liability value of derivatives 26 26 — 26 — Total financial liabilities $ 5,714,305 $ 5,723,141 $ — $ 319,471 $ 5,403,670 (1) Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stocks. 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 and lease 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 and Hedging Activiti

Derivative and Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Derivative and Hedging Activities The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Company may enter into derivative contracts that are intended to economically hedge certain of its risks, even though hedge accounting does not apply or the Company elects not to apply hedge accounting. During 2015, the company entered into LIBOR-based interest rate swaps with the objective of limiting the variability of interest payment cash flows resulting from changes in the benchmark interest rate LIBOR. These interest rate swaps are designated as cash flow hedges involving the receipt of fixed-rate amounts from a counterparty in exchange for the Company making variable-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of the derivatives is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. Any ineffective portion of a financial instrument’s change in fair value is immediately recognized in earnings. During the next twelve months, the Company estimates that an additional $2.0 million will be reclassified as an increase to interest income from amounts reported in accumulated comprehensive income. During the six months ended June 30, 2015 , no derivative position designated as cash flow hedges were discontinued and none of the gains and losses reported in other comprehensive income were reclassified into earnings as a result of discontinuance of cash flow hedges. The Company also enters into forward loan sales contracts, which are derived from loans held for sale, or in the Company’s pipeline, to enable those borrowers to manage their exposure to interest rate fluctuations. The interest rate derivative contracts are not 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, 2015 , the Company recorded $31 thousand and $36 thousand , respectively, in non-interest income and $(46) thousand and $1 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, 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. The Company’s derivative instrument contracts at fair value as well as their classification on the Company's balance sheet is presented below: (Dollars in thousands) June 30, 2015 December 31, 2014 Number of instruments Balance Sheet Location Fair Value Notional Fair Value Notional Asset derivatives Derivatives designated as hedging instruments Interest rate swap 1 Other assets $ 86 $ 70,000 $ — $ — Derivatives not designated as hedging instruments Forward loan sales contracts 37 Other assets 39 6,847 4 1,640 Total asset derivatives $ 125 $ 76,847 $ 4 $ 1,640 Liability derivatives Derivatives designated as hedging instruments Interest rate swap 2 Other liabilities $ 685 $ 115,000 $ — $ — Derivatives not designated as hedging instruments Forward loan sales contracts 24 Other liabilities 28 5,448 26 7,578 Total liability derivatives $ 713 $ 120,448 $ 26 $ 7,578 The table below present the effect off the Company's derivative financial instruments on the Consolidated Statements of Income for the three and six months ended June 30, 2015 : (Dollars in thousands) Three Months Ended June 30, 2015 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) Location of Gain Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Interest rate swap $ (835 ) Interest income $ 459 N/A $ — (Dollars in thousands) Six Months Ended June 30, 2015 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) Location of Gain Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Interest rate swap $ (32 ) Interest income $ 567 N/A $ — The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company's derivatives as of June 30, 2015 : Gross Amounts Not Offset in the Balance Sheets (Dollars in thousands) Gross Amount of Recognized Assets Gross Amount Offset in the Balance Sheets Net Amount of Assets Presented in the Balance Sheets Financial Instruments Cash Collateral Net Amount Offsetting of derivative assets: Interest rate swap $ 86 $ — $ 86 $ — $ 86 Total $ 86 $ — $ 86 $ — $ — $ 86 Offsetting of derivative liabilities: Interest rate swap $ 685 $ — $ 685 $ 820 $ (135 ) Total $ 685 $ — $ 685 $ — $ 820 $ (135 ) The Company has agreements with each of its derivative counterparties that contain a provision where if the Company defaults on any of its indebtedness or fails to maintain its status as a well capitalized institution, then the Company could also be declared in default on its derivative obligations and could be required to terminate its derivative positions with the counterparty. As of June 30, 2015 , the fair value of cash flow derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $564 thousand . 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.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Nature of Operations and Principles of Consolidation	Capital Bank Financial Corp. (“CBF” or the “Company”; formerly known as North American Financial Holdings, Inc.) is a bank holding company incorporated in late 2009 in Delaware and headquartered in Florida whose business is conducted primarily through Capital Bank, National Association (“Capital Bank, NA” or the “Bank”). The Company was incorporated with the goal of creating a regional banking franchise in the southeastern region of the United States through organic growth and acquisitions of other banks, including failed, underperforming and undercapitalized banks. CBF has raised $955.6 million to make acquisitions through a series of private placements and an initial public offering of its common stock. Since inception, CBF has acquired seven depository institutions, including the assets and certain deposits from failed banks. CBF has a total of 153 full service banking offices located in Florida, North and South Carolina, Tennessee and Virginia. Through its branches CBF offers a wide range of commercial and consumer loans and deposits, as well as ancillary financial services. The accompanying unaudited Consolidated Financial Statements 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 U.S. 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, 2014.
Use of Estimates and Assumptions	To prepare financial statements in conformity with U. S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as presented in the financial statements. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ.
Recent Accounting Pronouncements	In April 2015, the Financial Accounting Standard Board (the “FASB”) issued Accounting Standards Update ("ASU") 2015-3, "Interest - Imputation of interest" (Subtopic 835-30) - Simplifying the Presentation of Debt Issuance Costs". The amendments in ASU 2015-3 require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this Update. The amendments in ASU 2015-3 are effective for financial statements issued for fiscal years beginning after December 31, 2015, and interim periods within those fiscal years. The adoption of ASU 2015-3 is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In November 2014, the FASB issued ASU 2014-16, “Derivative and Hedging” (Topic 815)”. The amendments in ASU 2014-16 do not change the current criteria in GAAP for determining when separation of certain embedded derivative features in a hybrid financial instrument is required, but clarifies how current GAAP should be interpreted in evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Specifically, the amendments explain that an entity should consider all relevant terms and features in evaluating the nature of the host contract. Furthermore, the amendments specify that no single term or feature would necessarily determine the economic characteristics and risks of the host contract. Rather, the nature of the host contract depends upon the economic characteristics and risks of the entire hybrid financial instrument. In addition, the amendments clarify that, in evaluating the nature of a host contract, an entity should assess the substance of the relevant terms and features. The amendments in ASU 2014-16 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The adoption of ASU 2014-16 is not expected to have a material impact on the Company's consolidated financial position, results of operations and cash flows. In August 2014, the FASB issued ASU 2014-15, "Presentation of Financial Statements-Going Concern (Subtopic 205-40)—Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern". The amendments in ASU 2014-15 provide guidance in U.S. GAAP about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The amendments in ASU 2014-15 apply to all entities and will be effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. The adoption of ASU 2014-15 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. 2014-12, “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”. ASU 2014-12 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. ASU 2014-12 is effective for fiscal years and interim periods beginning after December 15, 2015. The adoption of ASU 2014-12 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”. ASU 2014-11 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 accounting changes in ASU 2014-11 are effective for the first interim or annual period beginning after December 15, 2014. 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 March 15, 2015. The adoption of ASU 2014-11 did not 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. 2014-9, “Revenue from Contracts with Customers (Topic 606)”. ASU 2014-9 clarifies the principles for recognizing revenue from contracts with customers. ASU 2014-9, 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 ASU 2014-9 to determine the impact on its consolidated financial position, results of operations and cash flows.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Weighted average number of shares outstanding: Basic 45,913 49,090 46,102 49,800 Dilutive effect of options outstanding 800 527 743 486 Dilutive effect of unvested restricted shares 507 644 582 806 Diluted 47,220 50,261 47,427 51,092
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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Anti-dilutive stock options 9 14 9 14 Anti-dilutive unvested restricted shares — — — —

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2015 and December 31, 2014 , are presented below: (Dollars in thousands) June 30, 2015 Amortized Unrealized Unrealized Estimated Available-for-Sale Corporate bonds $ 22,682 $ 960 $ — $ 23,642 Mortgage-backed securities—residential issued by government sponsored entities 573,962 2,415 3,384 572,993 Industrial revenue bonds 3,409 94 — 3,503 Total $ 600,053 $ 3,469 $ 3,384 $ 600,138 Held-to-Maturity U.S. Government agencies $ 13,450 $ 208 $ — $ 13,658 Corporate bonds 30,067 244 30 30,281 State and political subdivisions—tax exempt 10,869 382 — 11,251 State and political subdivisions—taxable 533 18 — 551 Mortgage-backed securities—residential issued by government sponsored entities 371,508 4,955 440 376,023 Total $ 426,427 $ 5,807 $ 470 $ 431,764 (Dollars in thousands) December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 550,908 $ 3,127 $ 1,832 $ 552,203 Industrial revenue bonds 3,580 110 — 3,690 Total $ 554,488 $ 3,237 $ 1,832 $ 555,893 Held-to-Maturity U.S. Government agencies $ 13,989 $ 230 $ — $ 14,219 Corporate bonds 25,000 163 — 25,163 State and political subdivisions—tax exempt 13,008 431 3 13,436 State and political subdivisions—taxable 537 26 — 563 Mortgage-backed securities—residential issued by government sponsored entities 384,428 5,626 56 389,998 Total $ 436,962 $ 6,476 $ 59 $ 443,379
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, 2015 , 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 prepay obligations without call or prepayment penalties. Debt securities not due at a single maturity date are shown separately. (Dollars in thousands) June 30, 2015 Amortized Estimated Yield 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 26,091 27,145 2.44 % Mortgage-backed securities—residential issued by government sponsored entities 573,962 572,993 1.94 % Total $ 600,053 $ 600,138 1.96 % Amortized Estimated Yield Held-to-maturity Due in one year or less $ 3 $ 3 1.10 % Due after one year through five years 16,265 16,333 4.59 % Due after five years through ten years 24,668 25,196 4.58 % Due after ten years 13,983 14,209 2.88 % Mortgage-backed securities—residential issued by government sponsored entities 371,508 376,023 2.34 % Total $ 426,427 $ 431,764 2.22 %
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 June 30, 2015 Estimated Unrealized Estimated Unrealized Estimated Unrealized Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 282,383 $ 2,933 $ 20,766 $ 451 $ 303,149 $ 3,384 Total $ 282,383 $ 2,933 $ 20,766 $ 451 $ 303,149 $ 3,384 Held-to-Maturity U.S. government agencies $ — $ — $ 13,658 $ 422 $ 13,658 $ 422 Corporate bonds 5,037 30 — — 5,037 30 Mortgage-backed securities—residential issued by government sponsored entities 115,555 1,310 144,088 2,919 259,643 4,229 Total $ 120,592 $ 1,340 $ 157,746 $ 3,341 $ 278,338 $ 4,681 (Dollars in thousands) Less than 12 Months 12 Months or Longer Total December 31, 2014 Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Available-for-Sale Mortgage-backed securities—residential issued by government sponsored entities $ 215,139 $ 1,596 $ 28,439 $ 236 $ 243,578 $ 1,832 Total $ 215,139 $ 1,596 $ 28,439 $ 236 $ 243,578 $ 1,832 Held-to-Maturity U.S Government agencies $ — $ — $ 14,219 $ 445 $ 14,219 $ 445 Mortgage-backed securities—residential issued by government sponsored entities 47,696 476 204,112 3,710 251,808 4,186 Total $ 47,696 $ 476 $ 218,331 $ 4,155 $ 266,027 $ 4,631

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Major Classifications of Loans	Major classifications of loans, including loans held for sale, are as follows: (Dollars in thousands) June 30, 2015 December 31, 2014 Non-owner occupied commercial real estate $ 834,351 $ 798,556 Other commercial construction and land 182,283 200,755 Multifamily commercial real estate 76,754 89,132 1-4 family residential construction and land 78,572 68,658 Total commercial real estate 1,171,960 1,157,101 Owner occupied commercial real estate 1,030,111 1,046,736 Commercial and industrial 1,181,451 1,073,791 Lease financing 1,661 2,005 Total commercial 2,213,223 2,122,532 1-4 family residential 959,224 925,698 Home equity loans 375,271 378,475 Other consumer loans 341,590 272,453 Total consumer 1,676,085 1,576,626 Other 145,146 143,960 Total loans $ 5,206,414 $ 5,000,219
Roll Forward of Accretable Yield	The table below presents a roll forward 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, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Accretable Yield Balance at beginning of period $ 246,109 $ 346,995 $ 292,633 $ 383,775 Accretion of income (25,052 ) (31,021 ) (49,892 ) (64,183 ) Reclassification from nonaccretable difference 19,111 29,229 45,628 35,896 Other (7,718 ) (15,782 ) (55,919 ) (26,067 ) Balance at end of period $ 232,450 $ 329,421 $ 232,450 $ 329,421 Nonaccretable difference, balance at the end of the period $ 190,771 $ 232,776 $ 190,771 $ 232,776
Major Categories of Loans	The following is a summary of the major categories of non-covered loans outstanding as of June 30, 2015 and December 31, 2014 : (Dollars in thousands) Non-PCI Loans June 30, 2015 New Acquired PCI Loans Total Non-owner occupied commercial real estate $ 431,689 $ 56,370 $ 318,206 $ 806,265 Other commercial construction and land 74,556 217 96,649 171,422 Multifamily commercial real estate 41,943 6,873 23,372 72,188 1-4 family residential construction and land 75,749 — 2,823 78,572 Total commercial real estate 623,937 63,460 441,050 1,128,447 Owner occupied commercial real estate 750,869 39,653 197,410 987,932 Commercial and industrial loans 1,081,441 8,517 85,325 1,175,283 Lease financing 1,661 — — 1,661 Total commercial 1,833,971 48,170 282,735 2,164,876 1-4 family residential 632,566 37,927 240,590 911,083 Home equity loans 125,256 140,834 73,644 339,734 Other consumer loans 333,147 4,148 4,130 341,425 Total consumer 1,090,969 182,909 318,364 1,592,242 Other 106,473 2,418 35,755 144,646 Total loans $ 3,655,350 $ 296,957 $ 1,077,904 $ 5,030,211 (Dollars in thousands) Non-PCI Loans December 31, 2014 New Acquired PCI Loans Total Non-covered Loans Non-owner occupied commercial real estate $ 372,793 $ 58,552 $ 333,433 $ 764,778 Other commercial construction and land 66,817 161 123,398 190,376 Multifamily commercial real estate 47,765 12,327 24,377 84,469 1-4 family residential construction and land 58,046 — 9,742 67,788 Total commercial real estate 545,421 71,040 490,950 1,107,411 Owner occupied commercial real estate 745,728 38,122 215,059 998,909 Commercial and industrial loans 958,628 10,564 97,228 1,066,420 Lease financing 2,005 — — 2,005 Total commercial 1,706,361 48,686 312,287 2,067,334 1-4 family residential 560,106 43,921 269,768 873,795 Home equity loans 103,644 152,797 82,121 338,562 Other consumer loans 261,935 4,647 5,772 272,354 Total consumer 925,685 201,365 357,661 1,484,711 Other 99,610 3,603 39,903 143,116 Total loans $ 3,277,077 $ 324,694 $ 1,200,801 $ 4,802,572 Covered Loans The following is a summary of the major categories of covered loans outstanding as of June 30, 2015 , and December 31, 2014 : (Dollars in thousands) Non-PCI Loans June 30, 2015 New Acquired PCI Loans Total Non-owner occupied commercial real estate $ — $ — $ 28,086 $ 28,086 Other commercial construction and land — — 10,861 10,861 Multifamily commercial real estate — — 4,566 4,566 1-4 family residential construction and land — — — — Total commercial real estate — — 43,513 43,513 Owner occupied commercial real estate — — 42,179 42,179 Commercial and industrial loans — 211 5,957 6,168 Lease financing — — — — Total commercial — 211 48,136 48,347 1-4 family residential — 1,989 46,152 48,141 Home equity loans — 27,084 8,453 35,537 Other consumer loans — — 165 165 Total consumer — 29,073 54,770 83,843 Other — — 500 500 Total loans $ — $ 29,284 $ 146,919 $ 176,203 (Dollars in thousands) Non-PCI Loans December 31, 2014 New Acquired PCI Loans Total Covered Loans Non-owner occupied commercial real estate $ — $ — $ 33,778 $ 33,778 Other commercial construction and land — — 10,379 10,379 Multifamily commercial real estate — — 4,663 4,663 1-4 family residential construction and land — — 870 870 Total commercial real estate — — 49,690 49,690 Owner occupied commercial real estate — — 47,827 47,827 Commercial and industrial loans — 214 7,157 7,371 Lease financing — — — — Total commercial — 214 54,984 55,198 1-4 family residential — 1,512 50,391 51,903 Home equity loans — 30,473 9,440 39,913 Other consumer loans — — 99 99 Total consumer — 31,985 59,930 91,915 Other — — 844 844 Total loans $ — $ 32,199 $ 165,448 $ 197,647
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, 2015 : (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due Non-accrual Non-purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 463 $ — $ — $ — $ 140 $ — $ 603 Other commercial construction and land 10 — — — 331 — 341 Multifamily commercial real estate — — — — — — — 1-4 family residential construction and land — — — — — — — Total commercial real estate 473 — — — 471 — 944 Owner occupied commercial real estate 1,724 — — — 3,736 — 5,460 Commercial and industrial loans 42 — — — 1,481 66 1,589 Lease financing — — — — — — — Total commercial 1,766 — — — 5,217 66 7,049 1-4 family residential 123 — — — 1,380 40 1,543 Home equity loans 835 — — — 1,387 306 2,528 Other consumer loans 2,603 — — — 940 — 3,543 Total consumer 3,561 — — — 3,707 346 7,614 Other — — — — — — — Total loans $ 5,800 $ — $ — $ — $ 9,395 $ 412 $ 15,607 (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due Non-accrual Purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 2,072 $ 101 $ 2,185 $ 298 $ — $ — $ 4,656 Other commercial construction and land 1,053 3 3,414 235 — — 4,705 Multifamily commercial real estate — — 406 — — — 406 1-4 family residential construction and land — — — — — — — Total commercial real estate 3,125 104 6,005 533 — — 9,767 Owner occupied commercial real estate 550 515 4,751 698 — — 6,514 Commercial and industrial loans 1,414 10 1,363 11 — — 2,798 Lease financing — — — — — — — Total commercial 1,964 525 6,114 709 — — 9,312 1-4 family residential 2,266 232 3,618 1,001 — — 7,117 Home equity loans 1,322 69 609 424 — — 2,424 Other consumer loans 146 — 25 — — — 171 Total consumer 3,734 301 4,252 1,425 — — 9,712 Other 55 — 43 — — — 98 Total loans $ 8,878 $ 930 $ 16,414 $ 2,667 $ — $ — $ 28,889 The following tables present the aging of the recorded investment in past due loans, based on contractual terms, as of December 31, 2014 : (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due and Still Accruing/Accreting Non-accrual Non-purchased credit impaired loans Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ — $ — $ — $ — $ 534 $ — $ 534 Other commercial construction and land 31 — — — 233 — 264 Multifamily commercial real estate — — — — — — — 1-4 family residential construction and land — — — — — — — Total commercial real estate 31 — — — 767 — 798 Owner occupied commercial real estate 744 — — — 2,524 — 3,268 Commercial and industrial loans 70 — — — 1,654 66 1,790 Lease financing — — — — — — — Total commercial 814 — — — 4,178 66 5,058 1-4 family residential 357 — — — 1,284 69 1,710 Home equity loans 627 225 — — 1,758 443 3,053 Other consumer loans 2,508 — — — 909 — 3,417 Total consumer 3,492 225 — — 3,951 512 8,180 Other 30 — — — 10 — 40 Total loans $ 4,367 $ 225 $ — $ — $ 8,906 $ 578 $ 14,076 (Dollars in thousands) 30-89 Days Past Due Greater than 90 Days Past Due and Still Accruing/Accreting Non-accrual Purchased credit impaired loans * Non-Covered Covered Non-Covered Covered Non-Covered Covered Total Non-owner occupied commercial real estate $ 1,314 $ — $ 4,036 $ 1,636 $ — $ — $ 6,986 Other commercial construction and land 2,789 — 9,928 2,696 — — 15,413 Multifamily commercial real estate 249 — 1,392 — — — 1,641 1-4 family residential construction and land — — — — — — — Total commercial real estate 4,352 — 15,356 4,332 — — 24,040 Owner occupied commercial real estate 2,531 — 3,957 1,029 — — 7,517 Commercial and industrial loans 240 — 4,485 92 — — 4,817 Lease financing — — — — — — — Total commercial 2,771 — 8,442 1,121 — — 12,334 1-4 family residential 3,480 352 5,251 2,010 — — 11,093 Home equity loans 1,524 335 788 780 — — 3,427 Other consumer loans 152 — 26 27 — — 205 Total consumer 5,156 687 6,065 2,817 — — 14,725 Other 2,012 — — — — — 2,012 Total loans $ 14,291 $ 687 $ 29,863 $ 8,270 $ — $ — $ 53,111
Loans, Excluding Purchased Credit-Impaired Loans by Internal Ratings	The following table summarizes loans, excluding PCI loans by internal rating at June 30, 2015 : Substandard (Dollars in thousands) Pass Special Mention Accruing Non-accrual Doubtful Total Non-owner occupied commercial real estate $ 485,104 $ 1,180 $ 1,635 $ 140 $ — $ 488,059 Other commercial construction and land 74,369 46 27 331 — 74,773 Multifamily commercial real estate 48,816 — — — — 48,816 1-4 family residential construction and land 72,881 419 2,449 — — 75,749 Total commercial real estate 681,170 1,645 4,111 471 — 687,397 Owner occupied commercial real estate 773,935 9,097 3,754 3,736 — 790,522 Commercial and industrial loans 1,072,482 12,332 3,808 1,547 — 1,090,169 Lease financing 1,661 — — — — 1,661 Total commercial 1,848,078 21,429 7,562 5,283 — 1,882,352 1-4 family residential 668,621 256 2,185 1,420 — 672,482 Home equity loans 289,552 57 1,872 1,693 — 293,174 Other consumer loans 336,355 — — 940 — 337,295 Total consumer 1,294,528 313 4,057 4,053 — 1,302,951 Other 108,439 452 — — — 108,891 Total loans $ 3,932,215 $ 23,839 $ 15,730 $ 9,807 $ — $ 3,981,591 The following table summarizes loans, excluding PCI loans by internal rating at December 31, 2014 : Substandard (Dollars in thousands) Pass Special Mention Accruing Non-accrual Doubtful Total Non-owner occupied commercial real estate $ 429,126 $ 835 $ 850 $ 534 $ — $ 431,345 Other commercial construction and land 66,667 47 31 233 — 66,978 Multifamily commercial real estate 60,092 — — — — 60,092 1-4 family residential construction and land 56,551 — 1,495 — — 58,046 Total commercial real estate 612,436 882 2,376 767 — 616,461 Owner occupied commercial real estate 766,822 6,687 7,817 2,524 — 783,850 Commercial and industrial loans 963,273 2,235 2,178 1,720 — 969,406 Lease financing 2,005 — — — — 2,005 Total commercial 1,732,100 8,922 9,995 4,244 — 1,755,261 1-4 family residential 601,738 283 2,165 1,353 — 605,539 Home equity loans 282,597 59 2,057 2,201 — 286,914 Other consumer loans 265,673 — — 909 — 266,582 Total consumer 1,150,008 342 4,222 4,463 — 1,159,035 Other 102,730 473 — 10 — 103,213 Total loans $ 3,597,274 $ 10,619 $ 16,593 $ 9,484 $ — $ 3,633,970

Allowance for Loan and Lease 27

Allowance for Loan and Lease Losses (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Allowance for Loan and Lease Losses	Activity in the allowance for loan and lease losses for the three and six months ended June 30, 2015 and 2014 is as follows: (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Balance, beginning of period $ 48,225 $ 55,606 $ 50,211 $ 56,851 Reversal of provision for loan losses for PCI loans (524 ) (940 ) (2,450 ) (3,428 ) PCI loans charged-off (162 ) — (162 ) — Provision for loan losses for non-PCI loans 1,823 2,344 2,908 4,808 Non-PCI loans charged-off (2,010 ) (2,176 ) (3,909 ) (4,132 ) Recoveries of non-PCI loans previously charged-off 711 473 1,465 1,208 Balance, end of period $ 48,063 $ 55,307 $ 48,063 $ 55,307 The following tables present the roll forward of the allowance for loan and lease losses for the three and six months ended June 30, 2015 by the class of loans against which the allowance is allocated: (Dollars in thousands) March 31, 2015 Provision/ Net (Charge-offs)/ June 30, 2015 Non-owner occupied commercial real estate $ 1,890 $ 2,012 $ 63 $ 3,965 Other commercial construction and land 12,575 (2,158 ) 5 10,422 Multifamily commercial real estate 223 (22 ) — 201 1-4 family residential construction and land 1,020 334 2 1,356 Total commercial real estate 15,708 166 70 15,944 Owner occupied commercial real estate 2,575 279 (95 ) 2,759 Commercial and industrial loans 9,217 35 203 9,455 Lease financing — — — — Total commercial 11,792 314 108 12,214 1-4 family residential 13,530 (504 ) (57 ) 12,969 Home equity loans 2,789 61 (197 ) 2,653 Other consumer loans 4,142 918 (983 ) 4,077 Total consumer 20,461 475 (1,237 ) 19,699 Other 264 344 (402 ) 206 Total loans $ 48,225 $ 1,299 $ (1,461 ) $ 48,063 (Dollars in thousands) December 31, 2014 Provision/ Net(Charge-offs)/ June 30, 2015 Non-owner occupied commercial real estate $ 2,022 $ 1,877 $ 66 $ 3,965 Other commercial construction and land 12,181 (1,925 ) 166 10,422 Multifamily commercial real estate 252 (51 ) — 201 1-4 family residential construction and land 1,102 251 3 1,356 Total commercial real estate 15,557 152 235 15,944 Owner occupied commercial real estate 2,504 462 (207 ) 2,759 Commercial and industrial loans 9,502 (347 ) 300 9,455 Lease financing — — — — Total commercial 12,006 115 93 12,214 1-4 family residential 15,451 (2,214 ) (268 ) 12,969 Home equity loans 2,815 103 (265 ) 2,653 Other consumer loans 4,122 1,671 (1,716 ) 4,077 Total consumer 22,388 (440 ) (2,249 ) 19,699 Other 260 631 (685 ) 206 Total loans $ 50,211 $ 458 $ (2,606 ) $ 48,063 The following tables present the roll forward of the allowance for loan and lease 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 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)/ June 30, 2014 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 and lease losses for PCI and non-PCI loans for the three and six months ended June 30, 2015 and 2014 , by the class of loans against which the allowance is allocated: (Dollars in thousands) Three Months Ended June 30, 2015 June 30, 2014 Non-PCI PCI Total Non-PCI PCI Total Allowance for loan and lease losses at the beginning of the period $ 21,295 $ 26,930 $ 48,225 $ 20,194 $ 35,412 $ 55,606 Charge-offs: Non-owner occupied commercial real estate — — — (204 ) — (204 ) Other commercial construction and land — — — 1 — 1 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land — — — 1 — 1 Total commercial real estate — — — (202 ) — (202 ) Owner occupied commercial real estate (95 ) — (95 ) (8 ) — (8 ) Commercial and industrial loans (41 ) — (41 ) (106 ) — (106 ) Lease financing — — — — — — Total commercial (136 ) — (136 ) (114 ) — (114 ) 1-4 family residential (80 ) — (80 ) (80 ) — (80 ) Home equity loans (247 ) — (247 ) (465 ) — (465 ) Other consumer loans (969 ) (162 ) (1,131 ) (781 ) — (781 ) Total consumer (1,296 ) (162 ) (1,458 ) (1,326 ) — (1,326 ) Other (578 ) — (578 ) (534 ) — (534 ) Total charge-offs (2,010 ) (162 ) (2,172 ) (2,176 ) — (2,176 ) Recoveries: Non-owner occupied commercial real estate 63 — 63 77 — 77 Other commercial construction and land 5 — 5 4 — 4 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land 2 — 2 2 — 2 Total commercial real estate 70 — 70 83 — 83 Owner occupied commercial real estate — — — 1 — 1 Commercial and industrial loans 244 — 244 34 — 34 Lease financing — — — — — — Total commercial 244 — 244 35 — 35 1-4 family residential 23 — 23 4 — 4 Home equity loans 50 — 50 33 — 33 Other consumer loans 148 — 148 146 — 146 Total consumer 221 — 221 183 — 183 Other 176 — 176 172 — 172 Total recoveries 711 — 711 473 — 473 Net charge-offs (1,299 ) (162 ) (1,461 ) (1,703 ) — (1,703 ) Provision (reversal) for loan and lease losses: Non-owner occupied commercial real estate (47 ) 2,059 2,012 159 626 785 Other commercial construction and land 66 (2,224 ) (2,158 ) (1 ) 2,606 2,605 Multifamily commercial real estate (20 ) (2 ) (22 ) (13 ) 90 77 1-4 family residential construction and land 144 190 334 (36 ) 105 69 Total commercial real estate 143 23 166 109 3,427 3,536 Owner occupied commercial real estate 294 (15 ) 279 (183 ) (23 ) (206 ) Commercial and industrial loans (134 ) 169 35 347 172 519 Lease financing — — — (1 ) 1 — Total commercial 160 154 314 163 150 313 1-4 family residential 25 (529 ) (504 ) 303 (3,472 ) (3,169 ) Home equity loans 229 (168 ) 61 473 (626 ) (153 ) Other consumer loans 942 (24 ) 918 899 104 1,003 Total consumer 1,196 (721 ) 475 1,675 (3,994 ) (2,319 ) Other 324 20 344 397 (523 ) (126 ) Total provision (reversal) for loan and lease losses 1,823 (524 ) 1,299 2,344 (940 ) 1,404 Allowance for loan and lease losses at the end of the period $ 21,819 $ 26,244 $ 48,063 $ 20,835 $ 34,472 $ 55,307 (Dollars in thousands) Six Months Ended June 30, 2015 June 30, 2014 Non-PCI PCI Total Non-PCI PCI Total Allowance for loan and lease losses at the beginning of the period $ 21,355 $ 28,856 $ 50,211 $ 18,951 $ 37,900 $ 56,851 Charge-offs: Non-owner occupied commercial real estate (8 ) — (8 ) (204 ) — (204 ) Other commercial construction and land — — — (207 ) — (207 ) Multifamily commercial real estate — — — (2 ) — (2 ) 1-4 family residential construction and land — — — — — — Total commercial real estate (8 ) — (8 ) (413 ) — (413 ) Owner occupied commercial real estate (207 ) — (207 ) (144 ) — (144 ) Commercial and industrial loans (95 ) — (95 ) (161 ) — (161 ) Lease financing — — — — — — Total commercial (302 ) — (302 ) (305 ) — (305 ) 1-4 family residential (295 ) — (295 ) (101 ) — (101 ) Home equity loans (407 ) — (407 ) (594 ) — (594 ) Other consumer loans (1,836 ) (162 ) (1,998 ) (1,588 ) — (1,588 ) Total consumer (2,538 ) (162 ) (2,700 ) (2,283 ) — (2,283 ) Other (1,061 ) — (1,061 ) (1,131 ) — (1,131 ) Total charge-offs (3,909 ) (162 ) (4,071 ) (4,132 ) — (4,132 ) Recoveries: Non-owner occupied commercial real estate 66 — 66 90 — 90 Other commercial construction and land 174 — 174 12 — 12 Multifamily commercial real estate — — — — — — 1-4 family residential construction and land 3 — 3 4 — 4 Total commercial real estate 243 — 243 106 — 106 Owner occupied commercial real estate — — — 24 — 24 Commercial and industrial loans 395 — 395 166 — 166 Lease financing — — — — — — Total commercial 395 — 395 190 — 190 1-4 family residential 27 — 27 7 — 7 Home equity loans 142 — 142 114 — 114 Other consumer loans 282 — 282 314 — 314 Total consumer 451 — 451 435 — 435 Other 376 — 376 477 — 477 Total recoveries 1,465 — 1,465 1,208 — 1,208 Net charge-offs (2,444 ) (162 ) (2,606 ) (2,924 ) — (2,924 ) Provision (reversal) for loan losses: Non-owner occupied commercial real estate (15 ) 1,892 1,877 181 (215 ) (34 ) Other commercial construction and land (138 ) (1,787 ) (1,925 ) 499 2,981 3,480 Multifamily commercial real estate (24 ) (27 ) (51 ) (24 ) 184 160 1-4 family residential construction and land 115 136 251 (70 ) 141 71 Total commercial real estate (62 ) 214 152 586 3,091 3,677 Owner occupied commercial real estate 594 (132 ) 462 39 (1,052 ) (1,013 ) Commercial and industrial loans (347 ) — (347 ) 382 (52 ) 330 Lease financing 1 (1 ) — (2 ) — (2 ) Total commercial 248 (133 ) 115 419 (1,104 ) (685 ) 1-4 family residential 132 (2,346 ) (2,214 ) 557 (5,049 ) (4,492 ) Home equity loans 284 (181 ) 103 614 287 901 Other consumer loans 1,689 (18 ) 1,671 2,087 (64 ) 2,023 Total consumer 2,105 (2,545 ) (440 ) 3,258 (4,826 ) (1,568 ) Other 617 14 631 545 (589 ) (44 ) Total provision (reversal) for loan losses 2,908 (2,450 ) 458 4,808 (3,428 ) 1,380 Allowance for loan losses at the end of the period $ 21,819 $ 26,244 $ 48,063 $ 20,835 $ 34,472 $ 55,307 The following table presents the balance in the allowance for loan and lease losses and the recorded investment in loans by class of loan and by impairment evaluation method as of June 30, 2015 : (Dollars in thousands) Allowance for Loan and Lease Losses Loans Individually Collectively Purchased Individually Collectively Purchased Non-owner occupied commercial real estate $ 2 $ 1,612 $ 2,351 $ 463 $ 487,596 $ 346,292 Other commercial construction and land — 1,440 8,982 — 74,773 107,510 Multifamily commercial real estate — 102 99 — 48,816 27,938 1-4 family residential construction and land — 856 500 — 75,749 2,823 Total commercial real estate 2 4,010 11,932 463 686,934 484,563 Owner occupied commercial real estate 517 1,999 243 5,855 784,667 239,589 Commercial and industrial loans — 7,696 1,759 1,996 1,088,173 91,282 Lease financing — — — — 1,661 — Total commercial 517 9,695 2,002 7,851 1,874,501 330,871 1-4 family residential 5 2,699 10,265 73 665,282 286,742 Home equity loans 14 643 1,996 204 292,970 82,097 Other consumer loans 9 3,957 111 198 337,097 4,295 Total consumer 28 7,299 12,372 475 1,295,349 373,134 Other — 268 (62 ) — 108,891 36,255 Total loans $ 547 $ 21,272 $ 26,244 $ 8,789 $ 3,965,675 $ 1,224,823 (1) Loans collectively evaluated for impairment include $326.0 million of acquired loans which are presented net of unamortized purchase discounts of $9.7 million . The following table presents the balance in the allowance for loan and lease losses and the recorded investment in loans by class of loan and by impairment evaluation method as of December 31, 2014 : (Dollars in thousands) Allowance for Loan and Lease Losses Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Purchased Credit- Impaired Individually Evaluated for Impairment Collectively Evaluated for Impairment (1) Purchased Credit- Impaired Non-owner occupied commercial real estate $ — $ 1,563 $ 459 $ — $ 431,345 $ 367,211 Other commercial construction and land — 1,411 10,770 — 66,978 133,777 Multifamily commercial real estate — 126 126 — 60,092 29,040 1-4 family residential construction and land — 739 363 — 58,046 10,612 Total commercial real estate — 3,839 11,718 — 616,461 540,640 Owner occupied commercial real estate — 2,129 375 3,423 780,427 262,886 Commercial and industrial loans — 7,742 1,760 2,704 966,702 104,385 Lease financing — — — — 2,005 — Total commercial — 9,871 2,135 6,127 1,749,134 367,271 1-4 family residential — 2,840 12,611 745 599,278 320,159 Home equity loans — 639 2,176 325 286,589 91,561 Other consumer loans 15 3,815 292 221 266,361 5,871 Total consumer 15 7,294 15,079 1,291 1,152,228 417,591 Other — 336 (76 ) — 103,213 40,747 Total loans $ 15 $ 21,340 $ 28,856 $ 7,418 $ 3,621,036 $ 1,366,249 (1) Loans collectively evaluated for impairment include $355.4 million of acquired loans which are presented net of unamortized purchase discounts of $11.7 million . Tr

FDIC Indemnification Asset (Tab

FDIC Indemnification Asset (Tables)	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [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, 2014 $ 16,762 Indemnification asset income 129 Amortization of indemnification asset (5,067 ) Cash received on reimbursable losses (60 ) Balance, June 30, 2015 $ 11,764 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

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Other Real Estate Owned	(Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Balance, beginning of period $ 71,453 $ 120,270 $ 77,626 $ 129,396 Real estate acquired from borrowers 3,959 8,159 7,058 17,864 Valuation allowance (1,710 ) (3,022 ) (3,100 ) (6,595 ) Properties sold (9,965 ) (29,124 ) (17,847 ) (44,382 ) Balance, end of period $ 63,737 $ 96,283 $ 63,737 $ 96,283

Federal Home Loan Bank Advanc30

Federal Home Loan Bank Advances and Short-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2015
Advances from Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances Owed	The advances as of June 30, 2015 and December 31, 2014 consisted of the following: (Dollars in thousands) Contractual June 30, 2015 Maturity Date Interest Rate as of June 30, 2015 $ 105,000 May 19, 2016 0.36% 50,000 December 31, 2019 0.20% (1 Month FRC + 2 bps)* 502 November 6, 2017 0.50% 50,000 November 20, 2017 0.21% (1 Month FRC + 2 bps)* 50,000 November 23, 2018 0.21% (1 Month FRC + 2 bps)* 40,000 November 25, 2016 0.21% (1 Month FRC + 2 bps)* 60,000 May 28, 2020 0.20% (1 Month FRC + 2 bps)* 493 February 10, 2026 —% $ 355,995 (Dollars in thousands) Contractual Outstanding Amount December 31, 2014 Maturity Date Interest Rate as of December 31, 2014 $ 105,000 May 19, 2015 0.36% 40,000 November 25, 2016 0.25% (1 Month FRC + 2 bps)* 578 November 6, 2017 0.50% 50,000 November 20, 2017 0.25% (1 Month FRC + 2 bps)* 50,000 November 23, 2018 0.26% (1 Month FRC + 2 bps)* 50,000 December 31, 2019 0.21% (1 Month FRC + 2 bps)* 513 February 10, 2026 —% $ 296,091 (*) FRC = FHLB Fixed Rate Credit interest rate.

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Schedule of Repurchase Agreements	The repurchase agreements as of December 31, 2014 consisted of the following: (Dollars in thousands) Carrying Amount December 31, 2014 Contractual Amount Maturity Date Contractual Rate $ 10,540 $ 10,000 November 6, 2016 4.75% 10,582 10,000 March 30, 2017 4.50% 10,394 10,000 December 18, 2017 3.79% 10,372 10,000 December 18, 2017 3.72% 10,638 10,000 March 22, 2019 3.56% $ 52,526 $ 50,000
Summary of Subordinated Debentures	The subordinated debentures as of June 30, 2015 and December 31, 2014 consisted of the following: (Dollars in thousands) Carrying Amount Date of Offering Face Amount June 30, 2015 December 31, 2014 Interest Rate as of June 30, 2015 Maturity Date July 31, 2001 $ 5,000 $ 3,929 $ 3,900 3.86 % (3 Month LIBOR + 358 bps) July 31, 2031 July 31, 2001 4,000 2,732 2,699 3.86 % (3 Month LIBOR + 358 bps) July 31, 2031 June 26, 2003 10,000 6,067 6,017 3.38 % (3 Month LIBOR + 310 bps) June 26, 2033 September 25, 2003 10,000 6,591 6,516 3.13 % (3 Month LIBOR + 285 bps) October 8, 2033 December 30, 2003 10,000 5,853 5,802 3.13 % (3 Month LIBOR + 285 bps) December 30, 2033 June 28, 2005 3,000 1,620 1,594 1.97 % (3 Month LIBOR + 168 bps) June 28, 2035 December 22, 2005 10,000 4,668 4,607 1.69 % (3 Month LIBOR + 140 bps) March 15, 2036 December 28, 2005 13,000 6,775 6,668 1.83 % (3 Month LIBOR + 154 bps) March 15, 2036 June 23, 2006 20,000 11,636 11,488 1.83 % (3 Month LIBOR + 155 bps) July 7, 2036 May 16, 2007 56,000 29,340 28,904 1.94 % (3 Month LIBOR + 165 bps) June 15, 2037 June 15, 2007 10,000 5,477 5,426 1.71 % (3 Month LIBOR + 143 bps) September 6, 2037 $ 151,000 $ 84,688 $ 83,621
Schedule of Maturities of Long -Term Borrowings	t June 30, 2015 , the maturities of long-term borrowings were as follows: (Dollars in thousands) Fixed Rate Floating Rate Total Due in 2015 $ — $ — $ — Due in 2016 — — — Due in 2017 — — — Due in 2018 — — — Due in 2019 — — — Thereafter — 84,688 84,688 Total $ — $ 84,688 $ 84,688

Shareholders' Equity and Mini32

Shareholders' Equity and Minimum Regulatory Capital Requirements (Tables)	6 Months Ended
	Jun. 30, 2015
Regulatory Capital Requirements [Abstract]
Schedule of Minimum and Actual Ratios	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 June 30, 2015 Amount Ratio Amount Ratio Amount Ratio Tier 1 Leverage Capital (to Average Assets) CBF Consolidated N/A N/A $269,111 ≥ 4.0% $ 986,167 14.7% Capital Bank, N.A. $334,648 ≥ 5.0% $267,718 ≥ 4.0% $ 745,997 11.2% Tier 1 Common Equity Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $256,127 ≥ 4.5% $ 914,613 16.1% Capital Bank, N.A. $367,868 ≥ 6.5% $254,678 ≥ 4.5% $ 745,997 13.2% Tier 1 Risk-based Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $341,503 ≥ 6.0% $ 986,167 17.3% Capital Bank, N.A. $452,761 ≥ 8.0% $339,571 ≥ 6.0% $ 745,997 13.2% Total Risk-based Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $455,337 ≥ 8.0% $ 1,034,687 18.2% Capital Bank, N.A. $565,951 ≥ 10.0% $452,761 ≥ 8.0% $ 797,910 14.1% (Dollars in thousands) Well Capitalized Requirement Adequately Capitalized Requirement Actual December 31, 2014 Amount Ratio Amount Ratio Amount Ratio Tier 1 Capital (to Average Assets) CBF Consolidated N/A N/A $261,445 ≥ 4.0% $ 933,335 14.3% Capital Bank, N.A. $326,050 ≥ 5.0% $260,840 ≥ 4.0% $ 881,395 13.5% Tier 1 Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $207,370 ≥ 4.0% $ 933,335 18.0% Capital Bank, N.A. $310,245 ≥ 6.0% $206,830 ≥ 4.0% $ 881,395 17.0% Total Capital (to Risk-weighted Assets) CBF Consolidated N/A N/A $414,740 ≥ 8.0% $ 987,535 19.1% Capital Bank, N.A. $517,074 ≥ 10.0% $413,660 ≥ 8.0% $ 935,455 18.1%

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based 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, 2015 and 2014 : (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Stock options $ 104 $ 171 $ 288 $ 366 Restricted stock 4 849 104 1,382 Total stock-based compensation expense $ 108 $ 1,020 $ 392 $ 1,748
Summary of Stock Option Activity	A summary of the stock option activity for the six months ended June 30, 2015 and 2014 is as follows: Six Months Ended June 30, 2015 June 30, 2014 (Shares in thousands) Shares Weighted Shares Weighted Balance, January 1, 3,111 $ 20.26 3,123 $ 20.50 Granted — — — — Exercised — — — — Canceled, expired or forfeited (2 ) 372.68 (9 ) 59.60 Balance, June 30, 3,109 $ 20.12 3,114 $ 20.39
Summary of Options Outstanding	Options outstanding at June 30, 2015 were as follows: (Shares in thousands) Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted Average Remaining Contractual Life Weighted Average Exercise Price Per Share Shares Weighted Average Exercise Price Per Share $18.00 236 7.89 years $ 18.00 236 $ 18.00 $20.00 2,864 4.93 years 20.00 2,864 20.00 $28.44 - $2,026.00 9 3.09 years 108.52 9 108.52 $18.00 - $2,026.00 3,109 5.15 years $ 20.12 3,109 $ 20.12
Summary of Unvested Restricted Stock Activity	The following table summarizes unvested restricted stock activity for the six months ended June 30, 2015 and 2014 : Six Months Ended June 30, 2015 June 30, 2014 (Shares in thousands) Shares Weighted Shares Weighted Balance, January 1, 810 $ 13.89 1,215 $ 14.28 Granted — — — — Vested or released (405 ) 14.33 (405 ) 15.07 Canceled, expired or forfeited — — — — Balance, June 30, 405 $ 13.45 810 $ 13.89

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2015
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 for the three and six months ended June 30, 2015 and 2014 is as follows: (Dollars in thousands) Three Months Ended Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Income before income taxes $ 20,247 $ 20,041 $ 38,090 $ 38,663 Income taxes computed at Federal statutory tax rate 7,086 7,014 13,331 13,532 Effect of: — State taxes (net of federal benefit) 783 738 1,235 1,483 Tax-exempt interest income, net (60 ) (158 ) (549 ) (333 ) Contingent value right expense (CVR) (118 ) 114 (118 ) 383 Other, net (434 ) (92 ) (188 ) (241 ) Total income tax expense $ 7,257 $ 7,616 $ 13,711 $ 14,824

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	Assets and liabilities measured at fair value on a recurring basis as of June 30, 2015 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Trading securities $ 2,898 $ — $ 2,898 $ — Available-for-sale securities: Mortgage-backed securities—residential 572,993 — 572,993 — Industrial revenue bonds 3,503 — — 3,503 Corporate bonds 23,642 — 23,642 — Available-for-sale securities $ 600,138 $ — $ 596,635 $ 3,503 Gross asset value of derivatives $ 125 $ — $ 125 $ — Liabilities Gross liability value of derivatives $ 713 $ — $ 713 $ — There were no transfers of assets and liabilities between levels of the fair value hierarchy during the six months ended June 30, 2015 . Assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Trading securities $ 2,410 $ — $ 2,410 $ — Available-for-sale securities: Mortgage-backed securities-residential 552,203 — 552,203 — Industrial revenue bonds 3,690 — — 3,690 Available-for-sale securities $ 555,893 $ — $ 552,203 $ 3,690 Gross asset value of derivatives $ 4 $ — $ 4 $ — Liabilities Gross liability value of derivatives $ 26 $ — $ 26 $ —
Fair Value Measurements on Recurring Basis Using Significant Unobservable Inputs (Level 3)	The table below presents 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, 2015 : (Dollars in thousands) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Industrial Revenue Bonds Beginning balance, April 1, 2015 $ 3,537 Principal reduction — Included in other comprehensive income (34 ) Ending balance, June 30, 2015 $ 3,503 (Dollars in thousands) Fair Value Measurement Using Significant Unobservable Inputs (Level 3) Industrial Revenue Bonds Beginning balance, January 1, 2015 $ 3,690 Principal reduction (170 ) Included in other comprehensive income (17 ) Ending balance, June 30, 2015 $ 3,503 The table below presents 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, April 1, 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
Quantitative Information About Recurring Level 3 Fair Value Measurements	(Dollars in thousands) Fair Value at Valuation Technique Significant Range Industrial revenue bonds $ 3,503 Discounted cash flow Discount rate 3.5% - 3.6% Illiquidity factor 0.5% (Dollars in thousands) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Input Range Industrial revenue bonds $ 3,690 Discounted cash flow Discount rate 3.5% - 3.6% Illiquidity factor 0.5%
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis	Assets and liabilities measured at fair value on a nonrecurring basis as of June 30, 2015 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Other real estate owned $ — $ — $ 41,292 Other repossessed assets — 189 — Impaired loans — — 204 Other real estate owned measured at fair value as of June 30, 2015 had a carrying amount of $54.4 million , less valuation allowances totaling $13.1 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 as of December 31, 2014 are summarized below: (Dollars in thousands) Fair Value Measurement Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Other real estate owned $ — $ — $ 66,048 Other repossessed assets — 150 — Impaired loans — — 754
Quantitative Information About Nonrecurring Level 3 Fair Value Measurements	(Dollars in thousands) Fair Value at Valuation Technique Significant Unobservable Input Weighted Average Other real estate owned $ 41,292 Fair value of property Appraised value less cost to sell 7.82% Impaired loans 204 Fair value of collateral Appraised value less cost to sell 7.10% (Dollars in thousands) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Input Weighted Average Other real estate owned $ 66,048 Fair value of property Appraised value less cost to sell 7.86% Impaired loans 754 Fair value of collateral Appraised value less cost to sell 7.60%
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, 2015 Carrying Value Estimated Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 201,286 $ 201,286 $ 201,286 $ — $ — Trading securities 2,898 2,898 — 2,898 — Investment securities available-for-sale 600,138 600,138 — 596,635 3,503 Investment securities held-to-maturity 426,427 431,764 — 431,764 — Loans, net 5,158,351 5,251,624 — 7,127 5,244,497 FDIC indemnification asset 11,764 11,764 — — 11,764 Receivable from FDIC 2,652 2,652 — 2,652 — Other earning assets (1) 52,651 52,651 — — 52,651 Gross asset value of derivatives 125 125 — 125 — Total financial assets $ 6,456,292 $ 6,554,902 $ 201,286 $ 1,041,201 $ 5,312,415 Financial Liabilities Non-contractual deposits $ 3,970,613 $ 3,970,613 $ — $ — $ 3,970,613 Contractual deposits 1,521,810 1,516,474 — — 1,516,474 Federal Home Loan Bank advances 355,995 355,990 — 355,990 — Short-term borrowings 18,466 18,466 — 18,466 — Subordinated debentures 84,688 96,612 — — 96,612 Gross liability value of derivatives 713 713 — 713 — Total financial liabilities $ 5,952,285 $ 5,958,868 $ — $ 375,169 $ 5,583,699 (1) Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stocks. (Dollars in thousands) Fair Value Measurement December 31, 2014 Carrying Value Estimated Fair Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 188,135 $ 188,135 $ 188,135 $ — $ — Trading securities 2,410 2,410 — 2,410 — Investment securities available-for-sale 555,893 555,893 — 552,203 3,690 Investment securities held-to-maturity 436,962 443,379 — 443,379 — Loans, net 4,950,008 5,058,352 — 5,516 5,052,836 FDIC indemnification asset 16,762 16,762 — — 16,762 Receivable from FDIC 3,661 3,661 — 3,661 — Other earning assets (1) 50,943 50,943 — — 50,943 Gross asset value of derivatives 4 4 — 4 — Total financial assets $ 6,204,778 $ 6,319,539 $ 188,135 $ 1,007,173 $ 5,124,231 Financial Liabilities Non-contractual deposits $ 3,836,400 $ 3,836,400 $ — $ — $ 3,836,400 Contractual deposits 1,418,700 1,415,122 — — 1,415,122 Federal Home Loan Bank advances 296,091 296,038 — 296,038 — Short-term borrowings 23,407 23,407 — 23,407 — Long-term borrowings 52,526 54,235 — — 54,235 Subordinated debentures 87,155 97,913 — — 97,913 Gross liability value of derivatives 26 26 — 26 — Total financial liabilities $ 5,714,305 $ 5,723,141 $ — $ 319,471 $ 5,403,670 (1) Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stocks.

Derivative and Hedging Activi36

Derivative and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Derivative Instrument Contracts at Fair Value and Balance Sheet Classification	The Company’s derivative instrument contracts at fair value as well as their classification on the Company's balance sheet is presented below: (Dollars in thousands) June 30, 2015 December 31, 2014 Number of instruments Balance Sheet Location Fair Value Notional Fair Value Notional Asset derivatives Derivatives designated as hedging instruments Interest rate swap 1 Other assets $ 86 $ 70,000 $ — $ — Derivatives not designated as hedging instruments Forward loan sales contracts 37 Other assets 39 6,847 4 1,640 Total asset derivatives $ 125 $ 76,847 $ 4 $ 1,640 Liability derivatives Derivatives designated as hedging instruments Interest rate swap 2 Other liabilities $ 685 $ 115,000 $ — $ — Derivatives not designated as hedging instruments Forward loan sales contracts 24 Other liabilities 28 5,448 26 7,578 Total liability derivatives $ 713 $ 120,448 $ 26 $ 7,578
Summary of Derivative Instrument on the Consolidated Statements of Income	The table below present the effect off the Company's derivative financial instruments on the Consolidated Statements of Income for the three and six months ended June 30, 2015 : (Dollars in thousands) Three Months Ended June 30, 2015 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) Location of Gain Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Interest rate swap $ (835 ) Interest income $ 459 N/A $ — (Dollars in thousands) Six Months Ended June 30, 2015 Derivatives in Cash Flow Hedging Relationship Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) Location of Gain Reclassified from Accumulated OCI into Income (Effective Portion) Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) Interest rate swap $ (32 ) Interest income $ 567 N/A $ —
Offsetting Derivative Assets	The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company's derivatives as of June 30, 2015 : Gross Amounts Not Offset in the Balance Sheets (Dollars in thousands) Gross Amount of Recognized Assets Gross Amount Offset in the Balance Sheets Net Amount of Assets Presented in the Balance Sheets Financial Instruments Cash Collateral Net Amount Offsetting of derivative assets: Interest rate swap $ 86 $ — $ 86 $ — $ 86 Total $ 86 $ — $ 86 $ — $ — $ 86 Offsetting of derivative liabilities: Interest rate swap $ 685 $ — $ 685 $ 820 $ (135 ) Total $ 685 $ — $ 685 $ — $ 820 $ (135 )
Offsetting Derivative Liabilities	The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company's derivatives as of June 30, 2015 : Gross Amounts Not Offset in the Balance Sheets (Dollars in thousands) Gross Amount of Recognized Assets Gross Amount Offset in the Balance Sheets Net Amount of Assets Presented in the Balance Sheets Financial Instruments Cash Collateral Net Amount Offsetting of derivative assets: Interest rate swap $ 86 $ — $ 86 $ — $ 86 Total $ 86 $ — $ 86 $ — $ — $ 86 Offsetting of derivative liabilities: Interest rate swap $ 685 $ — $ 685 $ 820 $ (135 ) Total $ 685 $ — $ 685 $ — $ 820 $ (135 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)depository_institutionoffice	Dec. 31, 2014USD ($)
Accounting Policies [Abstract]
Amount raised through private placements and an initial public offering during year of inception	$ 955,600
Number of depository institutions acquired since inception | depository_institution	7
Total number of full service banking offices | office	153
Decrease in deferred tax assets	$ (117,151)	$ (129,624)

Earnings Per Common Share - Com

Earnings Per Common Share - Computation of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Weighted average number of shares outstanding:
Basic (in shares)	45,913	49,090	46,102	49,800
Diluted (in shares)	47,220	50,261	47,427	51,092
Stock options
Weighted average number of shares outstanding:
Dilutive effect (in shares)	800	527	743	486
Unvested Restricted Shares
Weighted average number of shares outstanding:
Dilutive effect (in shares)	507	644	582	806

Earnings Per Common Share - Wei

Earnings Per Common Share - Weighted Average Anti-Dilutive Stock Options and Unvested Restricted Shares Excluded from the Computation of Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive (in shares)	9	14	9	14
Unvested Restricted Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive (in shares)	0	0	0	0

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Available-for-Sale
Available-for-sale, Amortized Cost	$ 600,053	$ 554,488
Unrealized Gains	3,469	3,237
Unrealized Losses	3,384	1,832
Available-for-sale securities	600,138	555,893
Held-to-Maturity
Held-to-maturity, Amortized Cost	426,427	436,962
Unrealized Gains	5,807	6,476
Unrealized Losses	470	59
Fair value of investment securities held-to-maturity	431,764	443,379
U.S. Government agencies
Held-to-Maturity
Held-to-maturity, Amortized Cost	13,450	13,989
Unrealized Gains	208	230
Unrealized Losses	0	0
Fair value of investment securities held-to-maturity	13,658	14,219
Corporate bonds
Available-for-Sale
Available-for-sale, Amortized Cost	22,682
Unrealized Gains	960
Unrealized Losses	0
Available-for-sale securities	23,642
Held-to-Maturity
Held-to-maturity, Amortized Cost	30,067	25,000
Unrealized Gains	244	163
Unrealized Losses	30	0
Fair value of investment securities held-to-maturity	30,281	25,163
Mortgage-backed securities—residential issued by government sponsored entities
Available-for-Sale
Available-for-sale, Amortized Cost	573,962	550,908
Unrealized Gains	2,415	3,127
Unrealized Losses	3,384	1,832
Available-for-sale securities	572,993	552,203
Held-to-Maturity
Held-to-maturity, Amortized Cost	371,508	384,428
Unrealized Gains	4,955	5,626
Unrealized Losses	440	56
Fair value of investment securities held-to-maturity	376,023	389,998
Industrial revenue bonds
Available-for-Sale
Available-for-sale, Amortized Cost	3,409	3,580
Unrealized Gains	94	110
Unrealized Losses	0	0
Available-for-sale securities	3,503	3,690
State and political subdivisions—tax exempt
Held-to-Maturity
Held-to-maturity, Amortized Cost	10,869	13,008
Unrealized Gains	382	431
Unrealized Losses	0	3
Fair value of investment securities held-to-maturity	11,251	13,436
State and political subdivisions—taxable
Held-to-Maturity
Held-to-maturity, Amortized Cost	533	537
Unrealized Gains	18	26
Unrealized Losses	0	0
Fair value of investment securities held-to-maturity	$ 551	$ 563

Investment Securities - Estimat

Investment Securities - Estimated Fair Value of Investment Securities Available for Sale and Held to Maturity by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Amortized Cost
Available-for-sale, Amortized Cost	$ 600,053	$ 554,488
Estimated Fair Value
Available-for-sale, Estimated Fair Value	$ 600,138	555,893
Yield
Available-for-sale, Total, Yield	1.96%
Amortized Cost
Held-to-maturity, Amortized Cost	$ 426,427	436,962
Estimated Fair Value
Held-to-maturity, Estimated Fair Value	$ 431,764	443,379
Yield
Held-to-maturity, Total, Yield	2.22%
Debt Securities
Amortized Cost
Available-for-sale, Amortized Cost, Due in one year or less	$ 0
Available-for-sale, Amortized Cost, Due after one year through five years	0
Available-for-sale, Amortized Cost, Due after five years through ten years	0
Available-for-sale, Amortized Cost, Due after ten years	26,091
Estimated Fair Value
Available-for-sale, Estimated Fair Value, Due in one year or less	0
Available-for-sale, Estimated Fair Value, Due after one year through five years	0
Available-for-sale, Estimated Fair Value, Due after five years through ten years	0
Available-for-sale, Estimated Fair Value, Due after ten years	$ 27,145
Yield
Available-for-sale, Due in one year or less, Yield	0.00%
Available-for-sale, Due after one year through five years, Yield	0.00%
Available-for-sale, Due after five years through ten years, Yield	0.00%
Available-for-sale, Due after ten years, Yield	2.44%
Amortized Cost
Held-to-maturity, Amortized Cost, Due in one year or less	$ 3
Held-to-maturity, Amortized Cost, Due after one year through five years	16,265
Held-to-maturity, Amortized Cost, Due after five years through ten years	24,668
Held-to-maturity, Amortized Cost, Due after ten years	13,983
Estimated Fair Value
Held-to-maturity, Estimated Fair Value, Due in one year or less	3
Held-to-maturity, Estimated Fair Value, Due after one year through five years	16,333
Held-to-maturity, Estimated Fair Value, Due after five years through ten years	25,196
Held-to-maturity, Estimated Fair Value, Due after ten years	$ 14,209
Yield
Held-to-maturity, Due in one year or less, Yield	1.10%
Held-to-maturity, Due after one year through five years, Yield	4.59%
Held-to-maturity, Due after five years through ten years, Yield	4.58%
Held-to-maturity, Due after ten years, Yield	2.88%
Mortgage-backed securities—residential issued by government sponsored entities
Amortized Cost
Available-for-sale, Amortized Cost, Mortgage-backed securities—residential issued by government sponsored entities	$ 573,962
Available-for-sale, Amortized Cost	573,962	550,908
Estimated Fair Value
Available-for-sale, Estimated Fair Value, Mortgage-backed securities—residential issued by government sponsored entities	572,993
Available-for-sale, Estimated Fair Value	$ 572,993	552,203
Yield
Available-for-sale, Mortgage-backed securities—residential issued by government sponsored entities, Yield	1.94%
Amortized Cost
Held-to-maturity, Amortized Cost, Mortgage-backed securities—residential issued by government sponsored entities	$ 371,508
Held-to-maturity, Amortized Cost	371,508	384,428
Estimated Fair Value
Held-to-maturity, Estimated Fair Value, Mortgage-backed securities—residential issued by government sponsored entities	376,023
Held-to-maturity, Estimated Fair Value	$ 376,023	$ 389,998
Yield
Held-to-maturity, Mortgage-backed securities—residential issued by government sponsored entities, Yield	2.34%

Investment Securities - Securit

Investment Securities - Securities with Unrealized Losses Not Recognized in Income (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Available-for-sale	$ 282,383	$ 215,139
Estimated Fair Value, 12 Months or Longer, Available-for-sale	20,766	28,439
Total, Estimated Fair Value, Available-for-sale	303,149	243,578
Unrealized Losses
Unrealized Losses, Less than 12 Months, Available-for-sale	2,933	1,596
Unrealized Losses,12 Months or Longer, Available-for-sale	451	236
Total, Unrealized Losses, Available-for-sale	3,384	1,832
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Held-to-maturity	120,592	47,696
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	157,746	218,331
Total, Estimated Fair Value, Held-to-maturity	278,338	266,027
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	4,681	4,631
Unrealized Losses
Unrealized Losses, Less than 12 Months, Held-to-maturity	1,340	476
Unrealized Losses, 12 Months or Longer, Held-to-maturity	3,341	4,155
Corporate bonds
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Held-to-maturity	5,037
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	0
Total, Estimated Fair Value, Held-to-maturity	5,037
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	30
Unrealized Losses
Unrealized Losses, Less than 12 Months, Held-to-maturity	30
Unrealized Losses, 12 Months or Longer, Held-to-maturity	0
Mortgage-backed securities—residential issued by government sponsored entities
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Available-for-sale	282,383	215,139
Estimated Fair Value, 12 Months or Longer, Available-for-sale	20,766	28,439
Total, Estimated Fair Value, Available-for-sale	303,149	243,578
Unrealized Losses
Unrealized Losses, Less than 12 Months, Available-for-sale	2,933	1,596
Unrealized Losses,12 Months or Longer, Available-for-sale	451	236
Total, Unrealized Losses, Available-for-sale	3,384	1,832
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Held-to-maturity	115,555	47,696
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	144,088	204,112
Total, Estimated Fair Value, Held-to-maturity	259,643	251,808
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	4,229	4,186
Unrealized Losses
Unrealized Losses, Less than 12 Months, Held-to-maturity	1,310	476
Unrealized Losses, 12 Months or Longer, Held-to-maturity	2,919	3,710
U.S. Government agencies
Estimated Fair Value
Estimated Fair Value, Less than 12 Months, Held-to-maturity	0	0
Estimated Fair Value, 12 Months or Longer, Held-to-maturity	13,658	14,219
Total, Estimated Fair Value, Held-to-maturity	13,658	14,219
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	422	445
Unrealized Losses
Unrealized Losses, Less than 12 Months, Held-to-maturity	0	0
Unrealized Losses, 12 Months or Longer, Held-to-maturity	$ 422	$ 445

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)security	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)security	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Investments, Debt and Equity Securities [Abstract]
Trading securities	$ 2,898		$ 2,898		$ 2,410
Proceeds from sale of securities	31,900	$ 149,500	52,200	$ 150,300
Gain on sale of investments	$ 300	800	$ 300
Available-for-sale Securities, Gross Realized Gains				1,100
Securities in portfolio | security	129		129
Securities in portfolio in an unrealized loss position | security	32		32
Investment securities, carrying values	$ 347,300	$ 339,000	$ 347,300	339,000
Available-for-sale Securities, Gross Realized Losses				$ 800

Loans - Major Classifications o

Loans - Major Classifications of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 5,206,414	$ 5,000,219
Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,171,960	1,157,101
Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	834,351	798,556
Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	182,283	200,755
Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	76,754	89,132
Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	78,572	68,658
Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,213,223	2,122,532
Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,030,111	1,046,736
Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,181,451	1,073,791
Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,661	2,005
Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,676,085	1,576,626
Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	959,224	925,698
Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	375,271	378,475
Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	341,590	272,453
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 145,146	$ 143,960

Loans - Roll Forward of Accreta

Loans - Roll Forward of Accretable Yield (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accretable Yield
Balance at beginning of period	$ 246,109	$ 346,995	$ 292,633	$ 383,775
Accretion of income	(25,052)	(31,021)	(49,892)	(64,183)
Reclassification from nonaccretable difference	19,111	29,229	45,628	35,896
Other	(7,718)	(15,782)	(55,919)	(26,067)
Balance at end of period	232,450	329,421	232,450	329,421
Nonaccretable Difference
Nonaccretable difference, balance at the end of the period	$ 190,771	$ 232,776	$ 190,771	$ 232,776

Loans - Major Categories of Loa

Loans - Major Categories of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	$ 5,030,211	$ 4,802,572
Covered loans	176,203	197,647
Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,128,447	1,107,411
Covered loans	43,513	49,690
Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	806,265	764,778
Covered loans	28,086	33,778
Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	171,422	190,376
Covered loans	10,861	10,379
Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	72,188	84,469
Covered loans	4,566	4,663
Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	78,572	67,788
Covered loans	0	870
Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	2,164,876	2,067,334
Covered loans	48,347	55,198
Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	987,932	998,909
Covered loans	42,179	47,827
Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,175,283	1,066,420
Covered loans	6,168	7,371
Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,661	2,005
Covered loans	0	0
Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,592,242	1,484,711
Covered loans	83,843	91,915
Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	911,083	873,795
Covered loans	48,141	51,903
Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	339,734	338,562
Covered loans	35,537	39,913
Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	341,425	272,354
Covered loans	165	99
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	144,646	143,116
Covered loans	500	844
Non-PCI Loans, New
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	3,655,350	3,277,077
Covered loans	0	0
Non-PCI Loans, New | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	623,937	545,421
Covered loans	0	0
Non-PCI Loans, New | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	431,689	372,793
Covered loans	0	0
Non-PCI Loans, New | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	74,556	66,817
Covered loans	0	0
Non-PCI Loans, New | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	41,943	47,765
Covered loans	0	0
Non-PCI Loans, New | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	75,749	58,046
Covered loans	0	0
Non-PCI Loans, New | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,833,971	1,706,361
Covered loans	0	0
Non-PCI Loans, New | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	750,869	745,728
Covered loans	0	0
Non-PCI Loans, New | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,081,441	958,628
Covered loans	0	0
Non-PCI Loans, New | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,661	2,005
Covered loans	0	0
Non-PCI Loans, New | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,090,969	925,685
Covered loans	0	0
Non-PCI Loans, New | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	632,566	560,106
Covered loans	0	0
Non-PCI Loans, New | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	125,256	103,644
Covered loans	0	0
Non-PCI Loans, New | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	333,147	261,935
Covered loans	0	0
Non-PCI Loans, New | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	106,473	99,610
Covered loans	0	0
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	296,957	324,694
Covered loans	29,284	32,199
Non-PCI Loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	63,460	71,040
Covered loans	0	0
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	56,370	58,552
Covered loans	0	0
Non-PCI Loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	217	161
Covered loans	0	0
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	6,873	12,327
Covered loans	0	0
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	0	0
Covered loans	0	0
Non-PCI Loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	48,170	48,686
Covered loans	211	214
Non-PCI Loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	39,653	38,122
Covered loans	0	0
Non-PCI Loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	8,517	10,564
Covered loans	211	214
Non-PCI Loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	0	0
Covered loans	0	0
Non-PCI Loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	182,909	201,365
Covered loans	29,073	31,985
Non-PCI Loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	37,927	43,921
Covered loans	1,989	1,512
Non-PCI Loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	140,834	152,797
Covered loans	27,084	30,473
Non-PCI Loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	4,148	4,647
Covered loans	0	0
Non-PCI Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	2,418	3,603
Covered loans	0	0
Purchased Credit- Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	1,077,904	1,200,801
Covered loans	146,919	165,448
Purchased Credit- Impaired | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	441,050	490,950
Covered loans	43,513	49,690
Purchased Credit- Impaired | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	318,206	333,433
Covered loans	28,086	33,778
Purchased Credit- Impaired | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	96,649	123,398
Covered loans	10,861	10,379
Purchased Credit- Impaired | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	23,372	24,377
Covered loans	4,566	4,663
Purchased Credit- Impaired | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	2,823	9,742
Covered loans	0	870
Purchased Credit- Impaired | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	282,735	312,287
Covered loans	48,136	54,984
Purchased Credit- Impaired | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	197,410	215,059
Covered loans	42,179	47,827
Purchased Credit- Impaired | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	85,325	97,228
Covered loans	5,957	7,157
Purchased Credit- Impaired | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	0	0
Covered loans	0	0
Purchased Credit- Impaired | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	318,364	357,661
Covered loans	54,770	59,930
Purchased Credit- Impaired | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	240,590	269,768
Covered loans	46,152	50,391
Purchased Credit- Impaired | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	73,644	82,121
Covered loans	8,453	9,440
Purchased Credit- Impaired | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	4,130	5,772
Covered loans	165	99
Purchased Credit- Impaired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-covered loans	35,755	39,903
Covered loans	$ 500	$ 844

Loans - Aging of the Recorded I

Loans - Aging of the Recorded Investment in Past Due Loans, Based on Contractual Terms (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Non-purchased credit impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 15,607	$ 14,076
Non-purchased credit impaired loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	944	798
Non-purchased credit impaired loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	603	534
Non-purchased credit impaired loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	341	264
Non-purchased credit impaired loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-purchased credit impaired loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-purchased credit impaired loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,049	5,058
Non-purchased credit impaired loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,460	3,268
Non-purchased credit impaired loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,589	1,790
Non-purchased credit impaired loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-purchased credit impaired loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,614	8,180
Non-purchased credit impaired loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,543	1,710
Non-purchased credit impaired loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,528	3,053
Non-purchased credit impaired loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,543	3,417
Non-purchased credit impaired loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	40
Non-Covered | Non-purchased credit impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	9,395	8,906
Non-Covered | Non-purchased credit impaired loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	471	767
Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	140	534
Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	331	233
Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Non-Covered | Non-purchased credit impaired loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	5,217	4,178
Non-Covered | Non-purchased credit impaired loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	3,736	2,524
Non-Covered | Non-purchased credit impaired loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	1,481	1,654
Non-Covered | Non-purchased credit impaired loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Non-Covered | Non-purchased credit impaired loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	3,707	3,951
Non-Covered | Non-purchased credit impaired loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	1,380	1,284
Non-Covered | Non-purchased credit impaired loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	1,387	1,758
Non-Covered | Non-purchased credit impaired loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	940	909
Non-Covered | Non-purchased credit impaired loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	10
Covered | Non-purchased credit impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	412	578
Covered | Non-purchased credit impaired loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	66	66
Covered | Non-purchased credit impaired loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	66	66
Covered | Non-purchased credit impaired loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	346	512
Covered | Non-purchased credit impaired loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	40	69
Covered | Non-purchased credit impaired loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	306	443
Covered | Non-purchased credit impaired loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Covered | Non-purchased credit impaired loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	28,889	53,111
Purchased Credit- Impaired | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,767	24,040
Purchased Credit- Impaired | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,656	6,986
Purchased Credit- Impaired | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,705	15,413
Purchased Credit- Impaired | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	406	1,641
Purchased Credit- Impaired | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Purchased Credit- Impaired | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,312	12,334
Purchased Credit- Impaired | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,514	7,517
Purchased Credit- Impaired | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,798	4,817
Purchased Credit- Impaired | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Purchased Credit- Impaired | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,712	14,725
Purchased Credit- Impaired | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,117	11,093
Purchased Credit- Impaired | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,424	3,427
Purchased Credit- Impaired | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	171	205
Purchased Credit- Impaired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	98	2,012
Purchased Credit- Impaired | Non-Covered
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	16,414	29,863
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	6,005	15,356
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	2,185	4,036
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	3,414	9,928
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	406	1,392
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	6,114	8,442
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	4,751	3,957
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	1,363	4,485
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	4,252	6,065
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	3,618	5,251
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	609	788
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	25	26
Non-accrual	0	0
Purchased Credit- Impaired | Non-Covered | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	43	0
Non-accrual	0	0
Purchased Credit- Impaired | Covered
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	2,667	8,270
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	533	4,332
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	298	1,636
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	235	2,696
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	709	1,121
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	698	1,029
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	11	92
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	1,425	2,817
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	1,001	2,010
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	424	780
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	27
Non-accrual	0	0
Purchased Credit- Impaired | Covered | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due and Still Accruing/Accreting	0	0
Non-accrual	0	0
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	5,800	4,367
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	473	31
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	463	0
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	10	31
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,766	814
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,724	744
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	42	70
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	3,561	3,492
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	123	357
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	835	627
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	2,603	2,508
30-89 Days Past Due | Non-Covered | Non-purchased credit impaired loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	30
30-89 Days Past Due | Covered | Non-purchased credit impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	225
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	225
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	225
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Covered | Non-purchased credit impaired loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	8,878	14,291
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	3,125	4,352
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	2,072	1,314
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,053	2,789
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due		249
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,964	2,771
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	550	2,531
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,414	240
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	3,734	5,156
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	2,266	3,480
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,322	1,524
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	146	152
30-89 Days Past Due | Purchased Credit- Impaired | Non-Covered | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	55	2,012
30-89 Days Past Due | Purchased Credit- Impaired | Covered
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	930	687
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	104	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial real estate | Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	101	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial real estate | Other commercial construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	3	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial real estate | Multifamily commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial real estate | 1-4 family residential construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	525	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial | Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	515	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial | Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	10	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total commercial | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	301	687
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total consumer | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	232	352
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total consumer | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	69	335
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Total consumer | Other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	0	0
30-89 Days Past Due | Purchased Credit- Impaired | Covered | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	$ 0	$ 0

Loans - Loans, Excluding Purcha

Loans - Loans, Excluding Purchased Credit-Impaired Loans by Internal Ratings (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 5,206,414	$ 5,000,219
Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,171,960	1,157,101
Total commercial real estate | Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	834,351	798,556
Total commercial real estate | Other commercial construction and land
Financing Receivable, Recorded Investment [Line Items]
Total loans	182,283	200,755
Total commercial real estate | Multifamily commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	76,754	89,132
Total commercial real estate | 1-4 family residential construction and land
Financing Receivable, Recorded Investment [Line Items]
Total loans	78,572	68,658
Total commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,213,223	2,122,532
Total commercial | Owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,030,111	1,046,736
Total commercial | Commercial and industrial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,181,451	1,073,791
Total commercial | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,661	2,005
Total consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,676,085	1,576,626
Total consumer | 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	959,224	925,698
Total consumer | Home equity loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	375,271	378,475
Total consumer | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	341,590	272,453
Other
Financing Receivable, Recorded Investment [Line Items]
Total loans	145,146	143,960
Non-PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,981,591	3,633,970
Non-PCI Loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,932,215	3,597,274
Non-PCI Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,839	10,619
Non-PCI Loans | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	15,730	16,593
Non-PCI Loans | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,807	9,484
Non-PCI Loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	687,397	616,461
Non-PCI Loans | Total commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	681,170	612,436
Non-PCI Loans | Total commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,645	882
Non-PCI Loans | Total commercial real estate | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,111	2,376
Non-PCI Loans | Total commercial real estate | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	471	767
Non-PCI Loans | Total commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	488,059	431,345
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	485,104	429,126
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,180	835
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,635	850
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	140	534
Non-PCI Loans | Total commercial real estate | Non-owner occupied commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Other commercial construction and land
Financing Receivable, Recorded Investment [Line Items]
Total loans	74,773	66,978
Non-PCI Loans | Total commercial real estate | Other commercial construction and land | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	74,369	66,667
Non-PCI Loans | Total commercial real estate | Other commercial construction and land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	46	47
Non-PCI Loans | Total commercial real estate | Other commercial construction and land | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	27	31
Non-PCI Loans | Total commercial real estate | Other commercial construction and land | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	331	233
Non-PCI Loans | Total commercial real estate | Other commercial construction and land | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	48,816	60,092
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	48,816	60,092
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | Multifamily commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land
Financing Receivable, Recorded Investment [Line Items]
Total loans	75,749	58,046
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	72,881	56,551
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	419	0
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,449	1,495
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial real estate | 1-4 family residential construction and land | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,882,352	1,755,261
Non-PCI Loans | Total commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,848,078	1,732,100
Non-PCI Loans | Total commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,429	8,922
Non-PCI Loans | Total commercial | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,562	9,995
Non-PCI Loans | Total commercial | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,283	4,244
Non-PCI Loans | Total commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	790,522	783,850
Non-PCI Loans | Total commercial | Owner occupied commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	773,935	766,822
Non-PCI Loans | Total commercial | Owner occupied commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,097	6,687
Non-PCI Loans | Total commercial | Owner occupied commercial real estate | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,754	7,817
Non-PCI Loans | Total commercial | Owner occupied commercial real estate | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,736	2,524
Non-PCI Loans | Total commercial | Owner occupied commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Commercial and industrial loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,090,169	969,406
Non-PCI Loans | Total commercial | Commercial and industrial loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,072,482	963,273
Non-PCI Loans | Total commercial | Commercial and industrial loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	12,332	2,235
Non-PCI Loans | Total commercial | Commercial and industrial loans | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,808	2,178
Non-PCI Loans | Total commercial | Commercial and industrial loans | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,547	1,720
Non-PCI Loans | Total commercial | Commercial and industrial loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,661	2,005
Non-PCI Loans | Total commercial | Lease financing | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,661	2,005
Non-PCI Loans | Total commercial | Lease financing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Lease financing | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Lease financing | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total commercial | Lease financing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,302,951	1,159,035
Non-PCI Loans | Total consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,294,528	1,150,008
Non-PCI Loans | Total consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	313	342
Non-PCI Loans | Total consumer | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,057	4,222
Non-PCI Loans | Total consumer | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,053	4,463
Non-PCI Loans | Total consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer | 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	672,482	605,539
Non-PCI Loans | Total consumer | 1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	668,621	601,738
Non-PCI Loans | Total consumer | 1-4 family residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	256	283
Non-PCI Loans | Total consumer | 1-4 family residential | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,185	2,165
Non-PCI Loans | Total consumer | 1-4 family residential | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,420	1,353
Non-PCI Loans | Total consumer | 1-4 family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer | Home equity loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	293,174	286,914
Non-PCI Loans | Total consumer | Home equity loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	289,552	282,597
Non-PCI Loans | Total consumer | Home equity loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	57	59
Non-PCI Loans | Total consumer | Home equity loans | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,872	2,057
Non-PCI Loans | Total consumer | Home equity loans | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,693	2,201
Non-PCI Loans | Total consumer | Home equity loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	337,295	266,582
Non-PCI Loans | Total consumer | Other consumer loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	336,355	265,673
Non-PCI Loans | Total consumer | Other consumer loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer | Other consumer loans | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Total consumer | Other consumer loans | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	940	909
Non-PCI Loans | Total consumer | Other consumer loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Other
Financing Receivable, Recorded Investment [Line Items]
Total loans	108,891	103,213
Non-PCI Loans | Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	108,439	102,730
Non-PCI Loans | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	452	473
Non-PCI Loans | Other | Substandard Accruing/Accreting
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Non-PCI Loans | Other | Substandard Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	10
Non-PCI Loans | Other | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($)	Jul. 16, 2010	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale		$ 7,127,000	$ 5,516,000
Deferred loan origination costs		14,000,000	10,100,000
Total loans		5,206,414,000	5,000,219,000
Covered loans		176,203,000	197,647,000
Other Real Estate, Covered		8,400,000		$ 17,000,000
1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale		7,100,000	5,500,000
Total commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		2,213,223,000	2,122,532,000
Covered loans		48,347,000	55,198,000
Other Real Estate, Covered		8,000,000
Total commercial | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Analysis of loans individually by classification of credit risk		500,000
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		145,146,000	143,960,000
Covered loans		500,000	844,000
Other | Farm Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		43,900,000	41,300,000
Other | State and Political Subdivision Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		81,100,000	76,900,000
Other | Deposit Customer Overdraft
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		1,800,000	$ 1,700,000
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		91,900,000
Period covered by loss sharing agreement	5 years
Other Covered Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period covered by loss sharing agreement	8 years
Single Family Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Covered loans		84,300,000
Other Real Estate, Covered		$ 400,000
Period covered by loss sharing agreement	10 years

Allowance for Loan and Lease 50

Allowance for Loan and Lease Losses - Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 48,225	$ 55,606	$ 50,211	$ 56,851
Provision (reversal) for loan and lease losses	1,299	1,404	458	1,380
Non-PCI loans charged-off	(2,172)	(2,176)	(4,071)	(4,132)
Recoveries of non-PCI loans previously charged-off	711	473	1,465	1,208
Balance, end of period	48,063	55,307	48,063	55,307
Net(Charge-offs)/ Recoveries	(1,461)	(1,703)	(2,606)	(2,924)
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Non-PCI loans charged-off	(162)	0	(162)	0
Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	1,823	2,344	2,908	4,808
Non-PCI loans charged-off	(2,010)	(2,176)	(3,909)	(4,132)
Recoveries of non-PCI loans previously charged-off	711	473	1,465	1,208
Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	26,930	35,412	28,856	37,900
Provision (reversal) for loan and lease losses	(524)	(940)	(2,450)	(3,428)
Non-PCI loans charged-off	(162)	0	(162)	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Balance, end of period	26,244	34,472	26,244	34,472
Net(Charge-offs)/ Recoveries	(162)	0	(162)	0
Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	15,708	14,683	15,557	14,730
Provision (reversal) for loan and lease losses	166	3,536	152	3,677
Non-PCI loans charged-off	0	(202)	(8)	(413)
Recoveries of non-PCI loans previously charged-off	70	83	243	106
Balance, end of period	15,944	18,100	15,944	18,100
Net(Charge-offs)/ Recoveries	70	(119)	235	(307)
Total commercial real estate | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	23	3,427	214	3,091
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial real estate | Non-owner occupied commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,890	3,829	2,022	4,635
Provision (reversal) for loan and lease losses	2,012	785	1,877	(34)
Non-PCI loans charged-off	0	(204)	(8)	(204)
Recoveries of non-PCI loans previously charged-off	63	77	66	90
Balance, end of period	3,965	4,487	3,965	4,487
Net(Charge-offs)/ Recoveries	63	(127)	66	(114)
Total commercial real estate | Non-owner occupied commercial real estate | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	2,059	626	1,892	(215)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial real estate | 1-4 family residential construction and land
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,020	1,559	1,102	1,558
Provision (reversal) for loan and lease losses	334	69	251	71
Non-PCI loans charged-off	0	1	0	0
Recoveries of non-PCI loans previously charged-off	2	2	3	4
Balance, end of period	1,356	1,631	1,356	1,631
Net(Charge-offs)/ Recoveries	2	3	3	2
Total commercial real estate | 1-4 family residential construction and land | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	190	105	136	141
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial real estate | Multifamily commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	223	403	252	320
Provision (reversal) for loan and lease losses	(22)	77	(51)	160
Non-PCI loans charged-off	0	0	0	(2)
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Balance, end of period	201	480	201	480
Net(Charge-offs)/ Recoveries	0	0	0	0
Total commercial real estate | Multifamily commercial real estate | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(2)	90	(27)	184
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial real estate | Other commercial construction and land
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	12,575	8,892	12,181	8,217
Provision (reversal) for loan and lease losses	(2,158)	2,605	(1,925)	3,480
Non-PCI loans charged-off	0	1	0	(207)
Recoveries of non-PCI loans previously charged-off	5	4	174	12
Balance, end of period	10,422	11,502	10,422	11,502
Net(Charge-offs)/ Recoveries	5	5	166	(195)
Total commercial real estate | Other commercial construction and land | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(2,224)	2,606	(1,787)	2,981
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	264	873	260	1,083
Provision (reversal) for loan and lease losses	344	(126)	631	(44)
Non-PCI loans charged-off	(578)	(534)	(1,061)	(1,131)
Recoveries of non-PCI loans previously charged-off	176	172	376	477
Balance, end of period	206	385	206	385
Net(Charge-offs)/ Recoveries	(402)	(362)	(685)	(654)
Other | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	20	(523)	14	(589)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	20,461	28,321	22,388	28,275
Provision (reversal) for loan and lease losses	475	(2,319)	(440)	(1,568)
Non-PCI loans charged-off	(1,458)	(1,326)	(2,700)	(2,283)
Recoveries of non-PCI loans previously charged-off	221	183	451	435
Balance, end of period	19,699	24,859	19,699	24,859
Net(Charge-offs)/ Recoveries	(1,237)	(1,143)	(2,249)	(1,848)
Total consumer | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(721)	(3,994)	(2,545)	(4,826)
Non-PCI loans charged-off	(162)	0	(162)	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total consumer | Other consumer loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,142	3,063	4,122	2,682
Provision (reversal) for loan and lease losses	918	1,003	1,671	2,023
Non-PCI loans charged-off	(1,131)	(781)	(1,998)	(1,588)
Recoveries of non-PCI loans previously charged-off	148	146	282	314
Balance, end of period	4,077	3,431	4,077	3,431
Net(Charge-offs)/ Recoveries	(983)	(635)	(1,716)	(1,274)
Total consumer | Other consumer loans | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(24)	104	(18)	(64)
Non-PCI loans charged-off	(162)	0	(162)	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total consumer | Home equity loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,789	4,875	2,815	3,869
Provision (reversal) for loan and lease losses	61	(153)	103	901
Non-PCI loans charged-off	(247)	(465)	(407)	(594)
Recoveries of non-PCI loans previously charged-off	50	33	142	114
Balance, end of period	2,653	4,290	2,653	4,290
Net(Charge-offs)/ Recoveries	(197)	(432)	(265)	(480)
Total consumer | Home equity loans | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(168)	(626)	(181)	287
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total consumer | 1-4 family residential
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	13,530	20,383	15,451	21,724
Provision (reversal) for loan and lease losses	(504)	(3,169)	(2,214)	(4,492)
Non-PCI loans charged-off	(80)	(80)	(295)	(101)
Recoveries of non-PCI loans previously charged-off	23	4	27	7
Balance, end of period	12,969	17,138	12,969	17,138
Net(Charge-offs)/ Recoveries	(57)	(76)	(268)	(94)
Total consumer | 1-4 family residential | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(529)	(3,472)	(2,346)	(5,049)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	11,792	11,729	12,006	12,763
Provision (reversal) for loan and lease losses	314	313	115	(685)
Non-PCI loans charged-off	(136)	(114)	(302)	(305)
Recoveries of non-PCI loans previously charged-off	244	35	395	190
Balance, end of period	12,214	11,963	12,214	11,963
Net(Charge-offs)/ Recoveries	108	(79)	93	(115)
Total commercial | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	154	150	(133)	(1,104)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial | Lease financing
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	0	1	0	3
Provision (reversal) for loan and lease losses	0	0	0	(2)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Balance, end of period	0	1	0	1
Net(Charge-offs)/ Recoveries	0	0	0	0
Total commercial | Lease financing | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	0	1	(1)	0
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial | Commercial and industrial loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	9,217	8,198	9,502	8,310
Provision (reversal) for loan and lease losses	35	519	(347)	330
Non-PCI loans charged-off	(41)	(106)	(95)	(161)
Recoveries of non-PCI loans previously charged-off	244	34	395	166
Balance, end of period	9,455	8,645	9,455	8,645
Net(Charge-offs)/ Recoveries	203	(72)	300	5
Total commercial | Commercial and industrial loans | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	169	172	0	(52)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	0	0	0	0
Total commercial | Owner occupied commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,575	3,530	2,504	4,450
Provision (reversal) for loan and lease losses	279	(206)	462	(1,013)
Non-PCI loans charged-off	(95)	(8)	(207)	(144)
Recoveries of non-PCI loans previously charged-off	0	1	0	24
Balance, end of period	2,759	3,317	2,759	3,317
Net(Charge-offs)/ Recoveries	(95)	(7)	(207)	(120)
Total commercial | Owner occupied commercial real estate | Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Provision (reversal) for loan and lease losses	(15)	(23)	(132)	(1,052)
Non-PCI loans charged-off	0	0	0	0
Recoveries of non-PCI loans previously charged-off	$ 0	$ 0	$ 0	$ 0

Allowance for Loan and Lease 51

Allowance for Loan and Lease Losses - Roll Forward of Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 48,225	$ 55,606	$ 50,211	$ 56,851
Provision/ (Reversals)	1,299	1,404	458	1,380
Net(Charge-offs)/ Recoveries	(1,461)	(1,703)	(2,606)	(2,924)
Balance, end of period	48,063	55,307	48,063	55,307
Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	15,708	14,683	15,557	14,730
Provision/ (Reversals)	166	3,536	152	3,677
Net(Charge-offs)/ Recoveries	70	(119)	235	(307)
Balance, end of period	15,944	18,100	15,944	18,100
Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	11,792	11,729	12,006	12,763
Provision/ (Reversals)	314	313	115	(685)
Net(Charge-offs)/ Recoveries	108	(79)	93	(115)
Balance, end of period	12,214	11,963	12,214	11,963
Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	20,461	28,321	22,388	28,275
Provision/ (Reversals)	475	(2,319)	(440)	(1,568)
Net(Charge-offs)/ Recoveries	(1,237)	(1,143)	(2,249)	(1,848)
Balance, end of period	19,699	24,859	19,699	24,859
Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	264	873	260	1,083
Provision/ (Reversals)	344	(126)	631	(44)
Net(Charge-offs)/ Recoveries	(402)	(362)	(685)	(654)
Balance, end of period	206	385	206	385
Non-owner occupied commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,890	3,829	2,022	4,635
Provision/ (Reversals)	2,012	785	1,877	(34)
Net(Charge-offs)/ Recoveries	63	(127)	66	(114)
Balance, end of period	3,965	4,487	3,965	4,487
Other commercial construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	12,575	8,892	12,181	8,217
Provision/ (Reversals)	(2,158)	2,605	(1,925)	3,480
Net(Charge-offs)/ Recoveries	5	5	166	(195)
Balance, end of period	10,422	11,502	10,422	11,502
Multifamily commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	223	403	252	320
Provision/ (Reversals)	(22)	77	(51)	160
Net(Charge-offs)/ Recoveries	0	0	0	0
Balance, end of period	201	480	201	480
1-4 family residential construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,020	1,559	1,102	1,558
Provision/ (Reversals)	334	69	251	71
Net(Charge-offs)/ Recoveries	2	3	3	2
Balance, end of period	1,356	1,631	1,356	1,631
Owner occupied commercial real estate | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,575	3,530	2,504	4,450
Provision/ (Reversals)	279	(206)	462	(1,013)
Net(Charge-offs)/ Recoveries	(95)	(7)	(207)	(120)
Balance, end of period	2,759	3,317	2,759	3,317
Commercial and industrial loans | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	9,217	8,198	9,502	8,310
Provision/ (Reversals)	35	519	(347)	330
Net(Charge-offs)/ Recoveries	203	(72)	300	5
Balance, end of period	9,455	8,645	9,455	8,645
Lease financing | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	0	1	0	3
Provision/ (Reversals)	0	0	0	(2)
Net(Charge-offs)/ Recoveries	0	0	0	0
Balance, end of period	0	1	0	1
1-4 family residential | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	13,530	20,383	15,451	21,724
Provision/ (Reversals)	(504)	(3,169)	(2,214)	(4,492)
Net(Charge-offs)/ Recoveries	(57)	(76)	(268)	(94)
Balance, end of period	12,969	17,138	12,969	17,138
Home equity loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,789	4,875	2,815	3,869
Provision/ (Reversals)	61	(153)	103	901
Net(Charge-offs)/ Recoveries	(197)	(432)	(265)	(480)
Balance, end of period	2,653	4,290	2,653	4,290
Other consumer loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,142	3,063	4,122	2,682
Provision/ (Reversals)	918	1,003	1,671	2,023
Net(Charge-offs)/ Recoveries	(983)	(635)	(1,716)	(1,274)
Balance, end of period	$ 4,077	$ 3,431	$ 4,077	$ 3,431

Allowance for Loan and Lease 52

Allowance for Loan and Lease Losses - Rollforward of Allowance for Loan and Lease Losses for PCI and Non-PCI Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 48,225	$ 55,606	$ 50,211	$ 56,851
Charge-offs	(2,172)	(2,176)	(4,071)	(4,132)
Recoveries	711	473	1,465	1,208
Net charge-offs	(1,461)	(1,703)	(2,606)	(2,924)
Provision (reversal) for loan and lease losses	1,299	1,404	458	1,380
Balance, end of period	48,063	55,307	48,063	55,307
Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	21,295	20,194	21,355	18,951
Charge-offs	(2,010)	(2,176)	(3,909)	(4,132)
Recoveries	711	473	1,465	1,208
Net charge-offs	(1,299)	(1,703)	(2,444)	(2,924)
Provision (reversal) for loan and lease losses	1,823	2,344	2,908	4,808
Balance, end of period	21,819	20,835	21,819	20,835
Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	15,708	14,683	15,557	14,730
Charge-offs	0	(202)	(8)	(413)
Recoveries	70	83	243	106
Net charge-offs	70	(119)	235	(307)
Provision (reversal) for loan and lease losses	166	3,536	152	3,677
Balance, end of period	15,944	18,100	15,944	18,100
Total commercial real estate | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	(202)	(8)	(413)
Recoveries	70	83	243	106
Provision (reversal) for loan and lease losses	143	109	(62)	586
Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	11,792	11,729	12,006	12,763
Charge-offs	(136)	(114)	(302)	(305)
Recoveries	244	35	395	190
Net charge-offs	108	(79)	93	(115)
Provision (reversal) for loan and lease losses	314	313	115	(685)
Balance, end of period	12,214	11,963	12,214	11,963
Total commercial | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(136)	(114)	(302)	(305)
Recoveries	244	35	395	190
Provision (reversal) for loan and lease losses	160	163	248	419
Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	20,461	28,321	22,388	28,275
Charge-offs	(1,458)	(1,326)	(2,700)	(2,283)
Recoveries	221	183	451	435
Net charge-offs	(1,237)	(1,143)	(2,249)	(1,848)
Provision (reversal) for loan and lease losses	475	(2,319)	(440)	(1,568)
Balance, end of period	19,699	24,859	19,699	24,859
Total consumer | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(1,296)	(1,326)	(2,538)	(2,283)
Recoveries	221	183	451	435
Provision (reversal) for loan and lease losses	1,196	1,675	2,105	3,258
Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	264	873	260	1,083
Charge-offs	(578)	(534)	(1,061)	(1,131)
Recoveries	176	172	376	477
Net charge-offs	(402)	(362)	(685)	(654)
Provision (reversal) for loan and lease losses	344	(126)	631	(44)
Balance, end of period	206	385	206	385
Other | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(578)	(534)	(1,061)	(1,131)
Recoveries	176	172	376	477
Provision (reversal) for loan and lease losses	324	397	617	545
Non-owner occupied commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,890	3,829	2,022	4,635
Charge-offs	0	(204)	(8)	(204)
Recoveries	63	77	66	90
Net charge-offs	63	(127)	66	(114)
Provision (reversal) for loan and lease losses	2,012	785	1,877	(34)
Balance, end of period	3,965	4,487	3,965	4,487
Non-owner occupied commercial real estate | Total commercial real estate | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	(204)	(8)	(204)
Recoveries	63	77	66	90
Provision (reversal) for loan and lease losses	(47)	159	(15)	181
Other commercial construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	12,575	8,892	12,181	8,217
Charge-offs	0	1	0	(207)
Recoveries	5	4	174	12
Net charge-offs	5	5	166	(195)
Provision (reversal) for loan and lease losses	(2,158)	2,605	(1,925)	3,480
Balance, end of period	10,422	11,502	10,422	11,502
Other commercial construction and land | Total commercial real estate | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	1	0	(207)
Recoveries	5	4	174	12
Provision (reversal) for loan and lease losses	66	(1)	(138)	499
Multifamily commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	223	403	252	320
Charge-offs	0	0	0	(2)
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Provision (reversal) for loan and lease losses	(22)	77	(51)	160
Balance, end of period	201	480	201	480
Multifamily commercial real estate | Total commercial real estate | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	(2)
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(20)	(13)	(24)	(24)
1-4 family residential construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,020	1,559	1,102	1,558
Charge-offs	0	1	0	0
Recoveries	2	2	3	4
Net charge-offs	2	3	3	2
Provision (reversal) for loan and lease losses	334	69	251	71
Balance, end of period	1,356	1,631	1,356	1,631
1-4 family residential construction and land | Total commercial real estate | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	1	0	0
Recoveries	2	2	3	4
Provision (reversal) for loan and lease losses	144	(36)	115	(70)
Owner occupied commercial real estate | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,575	3,530	2,504	4,450
Charge-offs	(95)	(8)	(207)	(144)
Recoveries	0	1	0	24
Net charge-offs	(95)	(7)	(207)	(120)
Provision (reversal) for loan and lease losses	279	(206)	462	(1,013)
Balance, end of period	2,759	3,317	2,759	3,317
Owner occupied commercial real estate | Total commercial | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(95)	(8)	(207)	(144)
Recoveries	0	1	0	24
Provision (reversal) for loan and lease losses	294	(183)	594	39
Commercial and industrial loans | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	9,217	8,198	9,502	8,310
Charge-offs	(41)	(106)	(95)	(161)
Recoveries	244	34	395	166
Net charge-offs	203	(72)	300	5
Provision (reversal) for loan and lease losses	35	519	(347)	330
Balance, end of period	9,455	8,645	9,455	8,645
Commercial and industrial loans | Total commercial | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(41)	(106)	(95)	(161)
Recoveries	244	34	395	166
Provision (reversal) for loan and lease losses	(134)	347	(347)	382
Lease financing | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	0	1	0	3
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Provision (reversal) for loan and lease losses	0	0	0	(2)
Balance, end of period	0	1	0	1
Lease financing | Total commercial | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	0	(1)	1	(2)
1-4 family residential | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	13,530	20,383	15,451	21,724
Charge-offs	(80)	(80)	(295)	(101)
Recoveries	23	4	27	7
Net charge-offs	(57)	(76)	(268)	(94)
Provision (reversal) for loan and lease losses	(504)	(3,169)	(2,214)	(4,492)
Balance, end of period	12,969	17,138	12,969	17,138
1-4 family residential | Total consumer | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(80)	(80)	(295)	(101)
Recoveries	23	4	27	7
Provision (reversal) for loan and lease losses	25	303	132	557
Home equity loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,789	4,875	2,815	3,869
Charge-offs	(247)	(465)	(407)	(594)
Recoveries	50	33	142	114
Net charge-offs	(197)	(432)	(265)	(480)
Provision (reversal) for loan and lease losses	61	(153)	103	901
Balance, end of period	2,653	4,290	2,653	4,290
Home equity loans | Total consumer | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(247)	(465)	(407)	(594)
Recoveries	50	33	142	114
Provision (reversal) for loan and lease losses	229	473	284	614
Other consumer loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,142	3,063	4,122	2,682
Charge-offs	(1,131)	(781)	(1,998)	(1,588)
Recoveries	148	146	282	314
Net charge-offs	(983)	(635)	(1,716)	(1,274)
Provision (reversal) for loan and lease losses	918	1,003	1,671	2,023
Balance, end of period	4,077	3,431	4,077	3,431
Other consumer loans | Total consumer | Non-PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(969)	(781)	(1,836)	(1,588)
Recoveries	148	146	282	314
Provision (reversal) for loan and lease losses	942	899	1,689	2,087
Purchased Credit- Impaired
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	26,930	35,412	28,856	37,900
Charge-offs	(162)	0	(162)	0
Recoveries	0	0	0	0
Net charge-offs	(162)	0	(162)	0
Provision (reversal) for loan and lease losses	(524)	(940)	(2,450)	(3,428)
Balance, end of period	26,244	34,472	26,244	34,472
Purchased Credit- Impaired | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	23	3,427	214	3,091
Purchased Credit- Impaired | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	154	150	(133)	(1,104)
Purchased Credit- Impaired | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(162)	0	(162)	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(721)	(3,994)	(2,545)	(4,826)
Purchased Credit- Impaired | Other
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	20	(523)	14	(589)
Purchased Credit- Impaired | Non-owner occupied commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	2,059	626	1,892	(215)
Purchased Credit- Impaired | Other commercial construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(2,224)	2,606	(1,787)	2,981
Purchased Credit- Impaired | Multifamily commercial real estate | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(2)	90	(27)	184
Purchased Credit- Impaired | 1-4 family residential construction and land | Total commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	190	105	136	141
Purchased Credit- Impaired | Owner occupied commercial real estate | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(15)	(23)	(132)	(1,052)
Purchased Credit- Impaired | Commercial and industrial loans | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	169	172	0	(52)
Purchased Credit- Impaired | Lease financing | Total commercial
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	0	1	(1)	0
Purchased Credit- Impaired | 1-4 family residential | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(529)	(3,472)	(2,346)	(5,049)
Purchased Credit- Impaired | Home equity loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	(168)	(626)	(181)	287
Purchased Credit- Impaired | Other consumer loans | Total consumer
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	(162)	0	(162)	0
Recoveries	0	0	0	0
Provision (reversal) for loan and lease losses	$ (24)	$ 104	$ (18)	$ (64)

Allowance for Loan and Lease 53

Allowance for Loan and Lease Losses - Summary of Allowance for Loan and Lease Losses and Recorded Investment in Loans by Class of Loans and by Impairment Evaluation (Detail) - USD ($) $ in Thousands	Jun. 30, 2015		Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, unamortized purchase discounts (Premium)	$ 9,700		$ 11,700
Acquired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, Collectively Evaluated for Impairment	326,000		355,400
Non-PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	547		15
Allowance for Loan Losses, Collectively Evaluated for Impairment	21,272		21,340
Loans, Individually Evaluated for Impairment	8,789		7,418
Loans, Collectively Evaluated for Impairment	3,965,675	[1]	3,621,036	[2]
Non-PCI Loans | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	2		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,010		3,839
Loans, Individually Evaluated for Impairment	463		0
Loans, Collectively Evaluated for Impairment	686,934	[1]	616,461	[2]
Non-PCI Loans | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	517		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	9,695		9,871
Loans, Individually Evaluated for Impairment	7,851		6,127
Loans, Collectively Evaluated for Impairment	1,874,501	[1]	1,749,134	[2]
Non-PCI Loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	28		15
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,299		7,294
Loans, Individually Evaluated for Impairment	475		1,291
Loans, Collectively Evaluated for Impairment	1,295,349	[1]	1,152,228	[2]
Non-PCI Loans | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	268		336
Loans, Individually Evaluated for Impairment	0		0
Loans, Collectively Evaluated for Impairment	108,891	[1]	103,213	[2]
Non-PCI Loans | Non-owner occupied commercial real estate | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	2		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,612		1,563
Loans, Individually Evaluated for Impairment	463		0
Loans, Collectively Evaluated for Impairment	487,596	[1]	431,345	[2]
Non-PCI Loans | Other commercial construction and land | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,440		1,411
Loans, Individually Evaluated for Impairment	0		0
Loans, Collectively Evaluated for Impairment	74,773	[1]	66,978	[2]
Non-PCI Loans | Multifamily commercial real estate | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	102		126
Loans, Individually Evaluated for Impairment	0		0
Loans, Collectively Evaluated for Impairment	48,816	[1]	60,092	[2]
Non-PCI Loans | 1-4 family residential construction and land | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	856		739
Loans, Individually Evaluated for Impairment	0		0
Loans, Collectively Evaluated for Impairment	75,749	[1]	58,046	[2]
Non-PCI Loans | Owner occupied commercial real estate | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	517		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,999		2,129
Loans, Individually Evaluated for Impairment	5,855		3,423
Loans, Collectively Evaluated for Impairment	784,667	[1]	780,427	[2]
Non-PCI Loans | Commercial and industrial loans | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,696		7,742
Loans, Individually Evaluated for Impairment	1,996		2,704
Loans, Collectively Evaluated for Impairment	1,088,173	[1]	966,702	[2]
Non-PCI Loans | Lease financing | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	0		0
Loans, Individually Evaluated for Impairment	0		0
Loans, Collectively Evaluated for Impairment	1,661	[1]	2,005	[2]
Non-PCI Loans | 1-4 family residential | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	5		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,699		2,840
Loans, Individually Evaluated for Impairment	73		745
Loans, Collectively Evaluated for Impairment	665,282	[1]	599,278	[2]
Non-PCI Loans | Home equity loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	14		0
Allowance for Loan Losses, Collectively Evaluated for Impairment	643		639
Loans, Individually Evaluated for Impairment	204		325
Loans, Collectively Evaluated for Impairment	292,970	[1]	286,589	[2]
Non-PCI Loans | Other consumer loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	9		15
Allowance for Loan Losses, Collectively Evaluated for Impairment	3,957		3,815
Loans, Individually Evaluated for Impairment	198		221
Loans, Collectively Evaluated for Impairment	337,097	[1]	266,361	[2]
Purchased Credit- Impaired | Non-PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	26,244		28,856
Loans, Purchase Credit-Impaired	1,224,823		1,366,249
Purchased Credit- Impaired | Non-PCI Loans | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	11,932		11,718
Loans, Purchase Credit-Impaired	484,563		540,640
Purchased Credit- Impaired | Non-PCI Loans | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	2,002		2,135
Loans, Purchase Credit-Impaired	330,871		367,271
Purchased Credit- Impaired | Non-PCI Loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	12,372		15,079
Loans, Purchase Credit-Impaired	373,134		417,591
Purchased Credit- Impaired | Non-PCI Loans | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	(62)		(76)
Loans, Purchase Credit-Impaired	36,255		40,747
Purchased Credit- Impaired | Non-PCI Loans | Non-owner occupied commercial real estate | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	2,351		459
Loans, Purchase Credit-Impaired	346,292		367,211
Purchased Credit- Impaired | Non-PCI Loans | Other commercial construction and land | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	8,982		10,770
Loans, Purchase Credit-Impaired	107,510		133,777
Purchased Credit- Impaired | Non-PCI Loans | Multifamily commercial real estate | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	99		126
Loans, Purchase Credit-Impaired	27,938		29,040
Purchased Credit- Impaired | Non-PCI Loans | 1-4 family residential construction and land | Total commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	500		363
Loans, Purchase Credit-Impaired	2,823		10,612
Purchased Credit- Impaired | Non-PCI Loans | Owner occupied commercial real estate | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	243		375
Loans, Purchase Credit-Impaired	239,589		262,886
Purchased Credit- Impaired | Non-PCI Loans | Commercial and industrial loans | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	1,759		1,760
Loans, Purchase Credit-Impaired	91,282		104,385
Purchased Credit- Impaired | Non-PCI Loans | Lease financing | Total commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	0		0
Loans, Purchase Credit-Impaired	0		0
Purchased Credit- Impaired | Non-PCI Loans | 1-4 family residential | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	10,265		12,611
Loans, Purchase Credit-Impaired	286,742		320,159
Purchased Credit- Impaired | Non-PCI Loans | Home equity loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	1,996		2,176
Loans, Purchase Credit-Impaired	82,097		91,561
Purchased Credit- Impaired | Non-PCI Loans | Other consumer loans | Total consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Purchased Credit-Impaired	111		292
Loans, Purchase Credit-Impaired	$ 4,295		$ 5,871
[1]	Loans collectively evaluated for impairment include $326.0 million of acquired loans which are presented net of unamortized purchase discounts of $9.7 million.
[2]	ns collectively evaluated for impairment include $355.4 million of acquired loans which are presented net of unamortized purchase discounts of $11.7 million.Tr

Allowance for Loan and Lease 54

Allowance for Loan and Lease Losses - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Receivables [Abstract]
Loans modified in TDRs with recorded investments	$ 0.4	$ 3.1	$ 0.9	$ 3.4

FDIC Indemnification Asset - Ad

FDIC Indemnification Asset - Additional Information (Detail) $ in Thousands	Jul. 16, 2010	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)agreement	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
FDIC Indemnification Asset [Line Items]
Gains (Losses) on Sales of Other Real Estate		$ 957	$ 3,192	$ 964	$ 3,913
Percentage future credit losses and workout expenses to be absorbed by FDIC				80.00%
Covered loans		176,203		$ 176,203		$ 197,647
Other Real Estate, Covered		8,400	$ 17,000	$ 8,400	$ 17,000
Single Family Loans
FDIC Indemnification Asset [Line Items]
Number of FDIC loss sharing agreements | agreement				3
Period covered by loss sharing agreement	10 years
Covered loans		84,300		$ 84,300
Other Real Estate, Covered		400		$ 400
Commercial and Other Loans
FDIC Indemnification Asset [Line Items]
Number of FDIC loss sharing agreements | agreement				3
Period covered by loss sharing agreement	5 years
Covered loans		91,900		$ 91,900
Other Covered Assets
FDIC Indemnification Asset [Line Items]
Period covered by loss sharing agreement	8 years
Total commercial
FDIC Indemnification Asset [Line Items]
Covered loans		48,347		48,347		$ 55,198
Other Real Estate, Covered		$ 8,000		$ 8,000

FDIC Indemnification Asset - Sc

FDIC Indemnification Asset - Schedule of FDIC Indemnification Asset (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
FDIC Indemnification Asset [Roll Forward]
FDIC indemnification asset, beginning balance	$ 16,762	$ 33,610
Indemnification asset income	129	423
Amortization of indemnification asset	(5,067)	(4,652)
Cash paid on net recoveries (received on reimbursable losses)	(60)	(3,852)
FDIC indemnification asset, ending balance	$ 11,764	$ 25,529

Other Real Estate Owned - Addit

Other Real Estate Owned - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Banking and Thrift [Abstract]
Other Real Estate, Covered	$ 8,400	$ 17,000	$ 8,400	$ 17,000
Non-covered OREO	55,300	79,300	55,300	79,300
Proceeds from sales of OREO	10,900	32,300	18,810	48,295
Net gain on sales of OREO	$ (957)	$ (3,192)	$ (964)	$ (3,913)

Other Real Estate Owned - Other

Other Real Estate Owned - Other Real Estate Owned (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Banking and Thrift [Abstract]
Proceeds from sales of OREO	$ 10,900	$ 32,300	$ 18,810	$ 48,295
Gains (Losses) on Sales of Other Real Estate	957	3,192	964	3,913
Other Real Estate [Roll Forward]
Balance, beginning of period	71,453	120,270	77,626	129,396
Real estate acquired from borrowers	3,959	8,159	7,058	17,864
Valuation allowance	(1,710)	(3,022)	(3,100)	(6,595)
Properties sold	(9,965)	(29,124)	(17,847)	(44,382)
Balance, end of period	$ 63,737	$ 96,283	$ 63,737	$ 96,283

Federal Home Loan Bank Advanc59

Federal Home Loan Bank Advances and Short-Term Borrowings - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Securities sold under repurchase agreements	$ 18,500	$ 23,400
Available-for-sale Securities Pledged as Collateral	24,900	34,900
Amounts of eligible collateral provided for incremental borrowing	331,400	247,700
Federal Home Loan Bank advances	355,995	296,091
Letter of Credit
Short-term Debt [Line Items]
Federal Home Loan Bank advances	25,400	$ 25,700
Letter of credit used as collateral in lieu of pledging securities	$ 25,200

Federal Home Loan Bank Advanc60

Federal Home Loan Bank Advances and Short-Term Borrowings - Federal Home Loan Bank Advance Owed (Detail) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount		$ 355,995	$ 296,091
FHLB Advances With 0.36%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount		$ 105,000	$ 105,000
Interest Rate		0.36%	0.36%
FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]	$ 50,000
Interest Rate	[1]	0.20%
FHLB Advances With 0.25%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]		$ 40,000
Interest Rate	[1]		0.25%
FHLB Advances With 0.50%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount		$ 502	$ 578
Interest Rate		0.50%	0.50%
FHLB Advances With 0.22%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]	$ 50,000
Interest Rate	[1]	0.21%
FHLB Advances With 0.25%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]		$ 50,000
Interest Rate	[1]		0.25%
FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]	$ 50,000
Interest Rate	[1]	0.21%
FHLB Advances With Zero Point Two One Percent Three [Member] [Domain]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]	$ 40,000
Interest Rate	[1]	0.21%
FHLB Advances With 0.26%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]		$ 50,000
Interest Rate	[1]		0.26%
FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount	[1]	$ 60,000	$ 50,000
Interest Rate	[1]	0.20%	0.21%
FHLB Advances With 0.00%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Contractual Outstanding Amount		$ 493	$ 513
Interest Rate		0.00%	0.00%
1 Month FRC | FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]	0.02%
1 Month FRC | FHLB Advances With 0.25%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]		0.02%
1 Month FRC | FHLB Advances With 0.22%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]	0.02%
1 Month FRC | FHLB Advances With 0.25%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]		0.02%
1 Month FRC | FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]	0.02%
1 Month FRC | FHLB Advances With 0.26%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]		0.02%
1 Month FRC | FHLB Advances With 0.21%
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate, Basis Points	[1]	0.02%	0.02%
[1]	FRC = FHLB Fixed Rate Credit interest rate.

Long-Term Borrowings - Schedule

Long-Term Borrowings - Schedule of Repurchase Agreements (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount	$ 84,688,000	$ 139,681,000
Repurchase Agreement
Assets Sold under Agreements to Repurchase [Line Items]
Repayments of Long-term Debt	52,300,000
Carrying Amount		52,526,000
Contractual Amount	50,000,000
Repurchase Agreement | 4.75%
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount		10,540,000
Contractual Amount	$ 10,000,000
Contractual Rate	4.75%
Repurchase Agreement | 4.50%
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount		10,582,000
Contractual Amount	$ 10,000,000
Contractual Rate	4.50%
Repurchase Agreement | 3.79%
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount		10,394,000
Contractual Amount	$ 10,000,000
Contractual Rate	3.79%
Repurchase Agreement | 3.72%
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount		10,372,000
Contractual Amount	$ 10,000,000
Contractual Rate	3.72%
Repurchase Agreement | 3.56%
Assets Sold under Agreements to Repurchase [Line Items]
Carrying Amount		$ 10,638,000
Contractual Amount	$ 10,000,000
Contractual Rate	3.56%

Long-Term Borrowings - Addition

Long-Term Borrowings - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)trust_preferred_security	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Period allowed for deferral of interest payment on the trust preferred securities (up to)			60 months
Carrying amount	$ 84,688		$ 84,688		$ 139,681
Gains (Losses) on Extinguishment of Debt	(1,438)	$ 0	$ (1,438)	$ 0
Collateralized Mortgage-Backed Securities
Debt Instrument [Line Items]
Collateralized mortgage-backed securities					$ 61,400
Repurchase Agreement
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 52,300
Weighted-average rate of repurchase agreements	4.06%		4.06%		4.06%
Carrying amount					$ 52,526
Gains (Losses) on Extinguishment of Debt	$ (1,600)
Subordinated Debt
Debt Instrument [Line Items]
Carrying amount	$ 84,688		$ 84,688		83,621
Subordinated Debt | 10% Subordinated Promissory Note
Debt Instrument [Line Items]
Carrying amount					$ 3,500
Debt Securities
Debt Instrument [Line Items]
Life of debt securities and trust preferred securities			30 years
Trust Preferred Securities
Debt Instrument [Line Items]
Number of trust preferred securities acquired | trust_preferred_security			13
Life of debt securities and trust preferred securities			30 years
CBKN | Subordinated Debt | 10% Subordinated Promissory Note
Debt Instrument [Line Items]
Contractual Rate	10.00%		10.00%
Maturity Date			Mar. 18, 2020
Carrying amount	$ 3,500		$ 3,500
Gains (Losses) on Extinguishment of Debt	$ (100)

Long-Term Borrowings - Summary

Long-Term Borrowings - Summary of Subordinated Debentures (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt	$ (1,438,000)	$ 0	$ (1,438,000)	$ 0
Carrying Amount	84,688,000		$ 84,688,000		$ 139,681,000
3 Month LIBOR | 3.83% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			3.58%
3 Month LIBOR | 3.83% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			3.58%
3 Month LIBOR | 3.37% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			3.10%
3 Month LIBOR | 3.10% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			2.85%
3 Month LIBOR | 3.10% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			2.85%
3 Month LIBOR | 1.95% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.68%
3 Month LIBOR | 1.67% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.40%
3 Month LIBOR | 1.81% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.54%
3 Month LIBOR | 1.80% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.55%
3 Month LIBOR | 1.92% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.65%
3 Month LIBOR | 1.69% Subordinated Debentures
Debt Instrument [Line Items]
Interest Rate, Basis Points			1.43%
Subordinated Debt
Debt Instrument [Line Items]
Face Amount	151,000,000		$ 151,000,000
Carrying Amount	84,688,000		$ 84,688,000		83,621,000
Subordinated Debt | 10% Subordinated Promissory Note
Debt Instrument [Line Items]
Carrying Amount					3,500,000
Subordinated Debt | 3.83% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jul. 31, 2001
Face Amount	5,000,000		$ 5,000,000
Carrying Amount	$ 3,929,000		$ 3,929,000		3,900,000
Interest Rate	3.86%		3.86%
Maturity Date			Jul. 31, 2031
Subordinated Debt | 3.83% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jul. 31, 2001
Face Amount	$ 4,000,000		$ 4,000,000
Carrying Amount	$ 2,732,000		$ 2,732,000		2,699,000
Interest Rate	3.86%		3.86%
Maturity Date			Jul. 31, 2031
Subordinated Debt | 3.37% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jun. 26, 2003
Face Amount	$ 10,000,000		$ 10,000,000
Carrying Amount	$ 6,067,000		$ 6,067,000		6,017,000
Interest Rate	3.38%		3.38%
Maturity Date			Jun. 26, 2033
Subordinated Debt | 3.10% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Sep. 25, 2003
Face Amount	$ 10,000,000		$ 10,000,000
Carrying Amount	$ 6,591,000		$ 6,591,000		6,516,000
Interest Rate	3.13%		3.13%
Maturity Date			Oct. 8, 2033
Subordinated Debt | 3.10% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Dec. 30, 2003
Face Amount	$ 10,000,000		$ 10,000,000
Carrying Amount	$ 5,853,000		$ 5,853,000		5,802,000
Interest Rate	3.13%		3.13%
Maturity Date			Dec. 30, 2033
Subordinated Debt | 1.95% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jun. 28, 2005
Face Amount	$ 3,000,000		$ 3,000,000
Carrying Amount	$ 1,620,000		$ 1,620,000		1,594,000
Interest Rate	1.97%		1.97%
Maturity Date			Jun. 28, 2035
Subordinated Debt | 1.67% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Dec. 22, 2005
Face Amount	$ 10,000,000		$ 10,000,000
Carrying Amount	$ 4,668,000		$ 4,668,000		4,607,000
Interest Rate	1.69%		1.69%
Maturity Date			Mar. 15, 2036
Subordinated Debt | 1.81% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Dec. 28, 2005
Face Amount	$ 13,000,000		$ 13,000,000
Carrying Amount	$ 6,775,000		$ 6,775,000		6,668,000
Interest Rate	1.83%		1.83%
Maturity Date			Mar. 15, 2036
Subordinated Debt | 1.80% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jun. 23, 2006
Face Amount	$ 20,000,000		$ 20,000,000
Carrying Amount	$ 11,636,000		$ 11,636,000		11,488,000
Interest Rate	1.83%		1.83%
Maturity Date			Jul. 7, 2036
Subordinated Debt | 1.92% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			May 16, 2007
Face Amount	$ 56,000,000		$ 56,000,000
Carrying Amount	$ 29,340,000		$ 29,340,000		28,904,000
Interest Rate	1.94%		1.94%
Maturity Date			Jun. 15, 2037
Subordinated Debt | 1.69% Subordinated Debentures
Debt Instrument [Line Items]
Date of Offering			Jun. 15, 2007
Face Amount	$ 10,000,000		$ 10,000,000
Carrying Amount	$ 5,477,000		$ 5,477,000		$ 5,426,000
Interest Rate	1.71%		1.71%
Maturity Date			Sep. 6, 2037
CBKN | Subordinated Debt | 10% Subordinated Promissory Note
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt	$ (100,000)
Carrying Amount	$ 3,500,000		$ 3,500,000
Maturity Date			Mar. 18, 2020

Long-Term Borrowings - Schedu64

Long-Term Borrowings - Schedule of Maturities of Long -Term Borrowings (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Due in 2015	$ 0
Due in 2016	0
Due in 2017	0
Due in 2018	0
Due in 2019	0
Thereafter	84,688
Total	84,688	$ 139,681
Fixed Rate
Debt Instrument [Line Items]
Due in 2015	0
Due in 2016	0
Due in 2017	0
Due in 2018	0
Due in 2019	0
Thereafter	0
Total	0
Floating Rate
Debt Instrument [Line Items]
Due in 2015	0
Due in 2016	0
Due in 2017	0
Due in 2018	0
Due in 2019	0
Thereafter	84,688
Total	$ 84,688

Shareholders' Equity and Mini65

Shareholders' Equity and Minimum Regulatory Capital Requirements - Schedule of Minimum and Actual Ratios (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
CBF Consolidated
Tier 1 Leverage Capital
Adequately capitalized requirement tier 1 capital to average assets, amount	$ 269,111	$ 261,445
Actual tier 1 capital to average assets	986,167	933,335
Tier 1 Common Equity Capital
Adequately capitalized requirement tier 1 common equity capital to risk weighted assets, amount	256,127
Actual tier 1 common equity capital to risk weighted average assets, amount	914,613
Tier 1 Risk-based Capital
Adequately capitalized requirement tier 1 capital to risk weighted assets, amount	341,503	207,370
Actual tier 1 capital to risk weighted assets, amount	986,167	933,335
Total Risk-based Capital
Adequately capitalized requirement total capital to risk weighted assets, amount	455,337	414,740
Actual total capital to risk weighted assets, amount	$ 1,034,687	$ 987,535
Risk Based Ratios
Adequately capitalized requirement, tier 1 capital to average assets (greater than or equal to)	4.00%	4.00%
Adequately capitalized requirement, tier 1 common equity capital to risk weighted assets (greater than or equal to)	4.50%
Adequately capitalized requirement, tier 1 capital to risk weighted assets (greater than or equal to)	6.00%	4.00%
Adequately capitalized requirement, total capital to risk weighted assets (greater than or equal to)	8.00%	8.00%
Leverage Ratios
Actual tier 1 capital to average assets	14.70%	14.30%
Actual tier 1 common equity capital to risk weighted assets	16.10%
Actual tier 1 capital to risk weighted assets	17.30%	18.00%
Actual tier 1 capital to total capital to risk weighted assets	18.20%	19.10%
Capital Bank, N.A.
Tier 1 Leverage Capital
Well capitalized requirement tier 1 capital to average assets, amount	$ 334,648	$ 326,050
Adequately capitalized requirement tier 1 capital to average assets, amount	267,718	260,840
Actual tier 1 capital to average assets	745,997	881,395
Tier 1 Common Equity Capital
Well capitalized requirement tier 1 common equity capital to risk weighted assets, amount	367,868
Adequately capitalized requirement tier 1 common equity capital to risk weighted assets, amount	254,678
Actual tier 1 common equity capital to risk weighted average assets, amount	745,997
Tier 1 Risk-based Capital
Well capitalized requirement tier 1 capital to risk weighted assets, amount	452,761	310,245
Adequately capitalized requirement tier 1 capital to risk weighted assets, amount	339,571	206,830
Actual tier 1 capital to risk weighted assets, amount	745,997	881,395
Total Risk-based Capital
Well capitalized requirement total capital to risk weighted assets, amount	565,951	517,074
Adequately capitalized requirement total capital to risk weighted assets, amount	452,761	413,660
Actual total capital to risk weighted assets, amount	$ 797,910	$ 935,455
Risk Based Ratios
Well capitalized requirement, tier 1 capital to average assets (greater than or equal to)	5.00%	5.00%
Adequately capitalized requirement, tier 1 capital to average assets (greater than or equal to)	4.00%	4.00%
Well capitalized requirement, tier 1 common equity capital to risk weighted assets (greater than or equal to)	6.50%
Adequately capitalized requirement, tier 1 common equity capital to risk weighted assets (greater than or equal to)	4.50%
Well capitalized requirement, tier 1 capital to risk weighted assets (greater than or equal to)	8.00%	6.00%
Adequately capitalized requirement, tier 1 capital to risk weighted assets (greater than or equal to)	6.00%	4.00%
Well capitalized requirement, total capital to risk weighted assets (greater than or equal to)	10.00%	10.00%
Adequately capitalized requirement, total capital to risk weighted assets (greater than or equal to)	8.00%	8.00%
Leverage Ratios
Actual tier 1 capital to average assets	11.20%	13.50%
Actual tier 1 common equity capital to risk weighted assets	13.20%
Actual tier 1 capital to risk weighted assets	13.20%	17.00%
Actual tier 1 capital to total capital to risk weighted assets	14.10%	18.10%

Shareholders' Equity and Mini66

Shareholders' Equity and Minimum Regulatory Capital Requirements - Additional Information (Detail) - USD ($)	Jan. 30, 2015	Jul. 15, 2014	Sep. 24, 2013	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Aug. 31, 2010
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Period of retained net profits				2 years
Approved dividend to Company by subsidiary	$ 199,400,000	$ 56,000,000	$ 105,000,000
Capital conservation buffer				6.10%
Stock repurchase, authorized amount				$ 300,000,000
Common shares repurchased				24,996,000	$ 65,884,000
Treasury Stock, Value				$ 198,186,000		$ 173,190,000
Treasury stock, shares				9,047,000		8,086,000
Share Repurchase Plan
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common shares repurchased				$ 25,000,000
Common shares repurchased (in shares)				961,257
Average price of common shares repurchased (in dollars per share)				$ 25.99
Treasury Stock, Value				$ 198,200,000
Treasury stock, shares				9,046,956
Sale of Stock, Price Per Share				$ 21.91
Remaining availability for future share repurchases				$ 101,800,000
Capital Bank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital to risk-weighted assets (at least)				14.10%		18.10%
Tier 1 capital to risk-weighted assets (at least)				13.20%		17.00%
Tier 1 capital ratio, minimum leverage ratio				11.20%		13.50%
Capital Bank, N.A. | Minimum
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital to risk-weighted assets (at least)							12.00%
Tier 1 capital to risk-weighted assets (at least)							11.00%
Tier 1 capital ratio, minimum leverage ratio							10.00%

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)plan$ / sharesshares	Jun. 30, 2014USD ($)shares	Jun. 30, 2015USD ($)plan$ / sharesshares	Jun. 30, 2014USD ($)$ / sharesshares
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of compensation plans | plan	2		2
Tax benefit related to stock-based compensation expense | $	$ 0	$ 391,000	$ 150,000	$ 670,000
Unrecognized stock-based compensation expense | $	0		$ 0
Trading period for determining stock price			30 days
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Weighted average remaining contractual life			5 years 1 month 25 days
Aggregate intrinsic value, outstanding | $	28,600,000		$ 28,600,000
Granted (in dollars per share) | $ / shares			$ 0	$ 0
Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Excess Tax Benefit from Share-based Compensation, Operating Activities | $	$ 2,200,000
Restricted stock granted			0	0
Vested or released (in shares)	(405,129)		(405,000)	(405,000)
Restricted stock | Vesting Goal One
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restricted stock price | $ / shares			$ 25
Restricted stock | Vesting Goal Two
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restricted stock price | $ / shares			28
Granted (in dollars per share) | $ / shares	$ 28
Restricted stock | Vesting Goal Three
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restricted stock price | $ / shares			$ 32
2010 And 2013 Plan | Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock award exercise expiration period from grant date			10 years
Options exercised after ten years	0		0
Stock options granted		0	0
2010 And 2013 Plan | Stock options | 10% Percent Owners
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock ownership percentage for 110% exercise price (more than)			10.00%
Stock award exercise expiration period from grant date			5 years
2010 And 2013 Plan | Stock options | Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Exercise price for common stock as a percentage of fair value (at least)			100.00%
2010 And 2013 Plan | Stock options | Minimum | 10% Percent Owners
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Exercise price for common stock as a percentage of fair value (at least)			110.00%
2013 Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Plan effective date			May 22, 2013
Plan expiration date			May 22, 2023
2013 Plan | Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Number of shares authorized under plan	2,639,000		2,639,000
2013 Plan | Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Restricted stock granted		0	0

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Components and Classification of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 108	$ 1,020	$ 392	$ 1,748
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	104	171	288	366
Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4	$ 849	$ 104	$ 1,382

Stock-Based Compensation - Su69

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - Stock options - $ / shares shares in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Shares
Beginning balance (in shares)	3,111	3,123
Granted (in shares)	0	0
Exercised (in shares)	0	0
Canceled, expired or forfeited (in shares)	(2)	(9)
Ending balance (in shares)	3,109	3,114
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share)	$ 20.26	$ 20.50
Granted (in dollars per share)	0	0
Exercised (in dollars per share)	0	0
Canceled, expired or forfeited (in dollars per share)	372.68	59.60
Ending balance (in dollars per share)	$ 20.12	$ 20.39

Stock-Based Compensation - Su70

Stock-Based Compensation - Summary of Options Outstanding (Detail) - Jun. 30, 2015 - Stock options - $ / shares shares in Thousands	Total
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices, lower range limit	$ 18
Exercise prices, upper range limit	$ 2,026
Outstanding options (in shares)	3,109
Weighted average remaining contractual life, outstanding options	5 years 1 month 25 days
Weighted average exercise price per share, outstanding options (in dollars per share)	$ 20.12
Exercisable options (in shares)	3,109
Weighted average exercise price per share, exercisable options (in dollars per share)	$ 20.12
$ 18
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices, lower range limit	18
Exercise prices, upper range limit	$ 18
Outstanding options (in shares)	236
Weighted average remaining contractual life, outstanding options	7 years 10 months 20 days
Weighted average exercise price per share, outstanding options (in dollars per share)	$ 18
Exercisable options (in shares)	236
Weighted average exercise price per share, exercisable options (in dollars per share)	$ 18
$ 20
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices, lower range limit	20
Exercise prices, upper range limit	$ 20
Outstanding options (in shares)	2,864
Weighted average remaining contractual life, outstanding options	4 years 11 months 5 days
Weighted average exercise price per share, outstanding options (in dollars per share)	$ 20
Exercisable options (in shares)	2,864
Weighted average exercise price per share, exercisable options (in dollars per share)	$ 20
$28.44 - $2,026.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices, lower range limit	28.44
Exercise prices, upper range limit	$ 2,026
Outstanding options (in shares)	9
Weighted average remaining contractual life, outstanding options	3 years 1 month 1 day
Weighted average exercise price per share, outstanding options (in dollars per share)	$ 108.52
Exercisable options (in shares)	9
Weighted average exercise price per share, exercisable options (in dollars per share)	$ 108.52

Stock-Based Compensation - Su71

Stock-Based Compensation - Summary of Unvested Restricted Stock Activity (Detail) - Restricted stock - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Shares
Beginning balance (in shares)		810,000	1,215,000
Granted (in shares)		0	0
Vested or released (in shares)	(405,129)	(405,000)	(405,000)
Canceled, expired or forfeited (in shares)		0	0
Ending balance (in shares)	405,000	405,000	810,000
Weighted Average Grant-Date Fair Value Per Share
Beginning balance (in dollars per share)		$ 13.89	$ 14.28
Granted (in dollars per share)		0	0
Vested or released (in dollars per share)		14.33	15.07
Canceled, expired or forfeited (in dollars per share)		0	0
Ending balance (in dollars per share)	$ 13.45	$ 13.45	$ 13.89

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Computed at Applicable Federal Statutory Income Tax Rates to Total Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income before income taxes	$ 20,247	$ 20,041	$ 38,090	$ 38,663
Income taxes computed at Federal statutory tax rate	7,086	7,014	13,331	13,532
Effect of:
State taxes (net of federal benefit)	783	738	1,235	1,483
Tax-exempt interest income, net	(60)	(158)	(549)	(333)
Contingent value right expense (CVR)	(118)	114	(118)	383
Other, net	(434)	(92)	(188)	(241)
Total income tax expense	$ 7,257	$ 7,616	$ 13,711	$ 14,824

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	36.00%	38.00%
Net deferred tax assets	$ 117,200,000		$ 129,600,000
Valuation allowance	0		0
Operating loss carryforwards	79,200,000		91,100,000
Amount of annual commutative limitation	10,900,000
Unrecognized tax benefits	0		0
Uncertain tax positions	$ 0		$ 0

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets
Trading securities	$ 2,898		$ 2,898			$ 2,410
Available-for-sale securities:
Available-for-sale securities	600,138		600,138			555,893
Gross asset value of derivatives	125		125			4
Liabilities
Gross liability value of derivatives	713		713			26
Industrial revenue bonds
Available-for-sale securities:
Available-for-sale securities	3,503		3,503			3,690
Corporate bonds
Available-for-sale securities:
Available-for-sale securities	23,642		23,642
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Trading securities	0		0			0
Available-for-sale securities:
Available-for-sale securities	0		0			0
Gross asset value of derivatives	0		0			0
Liabilities
Gross liability value of derivatives	0		0			0
Significant Other Observable Inputs (Level 2)
Assets
Trading securities	2,898		2,898			2,410
Available-for-sale securities:
Available-for-sale securities	596,635		596,635			552,203
Gross asset value of derivatives	125		125			4
Liabilities
Gross liability value of derivatives	713		713			26
Significant Unobservable Inputs (Level 3)
Assets
Trading securities	0		0			0
Available-for-sale securities:
Available-for-sale securities	3,503		3,503			3,690
Gross asset value of derivatives	0		0			0
Liabilities
Gross liability value of derivatives	0		0			0
Fair Value on Recurring Basis
Assets
Trading securities	2,898		2,898			2,410
Available-for-sale securities:
Available-for-sale securities	600,138		600,138			555,893
Gross asset value of derivatives	125		125			4
Liabilities
Gross liability value of derivatives	713		713			26
Fair Value on Recurring Basis | Mortgage-backed securities—residential
Available-for-sale securities:
Available-for-sale securities	572,993		572,993			552,203
Fair Value on Recurring Basis | Industrial revenue bonds
Available-for-sale securities:
Available-for-sale securities	3,503		3,503			3,690
Fair Value on Recurring Basis | Corporate bonds
Available-for-sale securities:
Available-for-sale securities	23,642		23,642
Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Trading securities	0		0			0
Available-for-sale securities:
Available-for-sale securities	0		0			0
Gross asset value of derivatives	0		0			0
Liabilities
Gross liability value of derivatives	0		0			0
Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities—residential
Available-for-sale securities:
Available-for-sale securities	0		0			0
Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Industrial revenue bonds
Available-for-sale securities:
Available-for-sale securities	0		0			0
Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds
Available-for-sale securities:
Available-for-sale securities	0		0
Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2)
Assets
Trading securities	2,898		2,898			2,410
Available-for-sale securities:
Available-for-sale securities	596,635		596,635			552,203
Gross asset value of derivatives	125		125			4
Liabilities
Gross liability value of derivatives	713		713			26
Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities—residential
Available-for-sale securities:
Available-for-sale securities	572,993		572,993			552,203
Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Industrial revenue bonds
Available-for-sale securities:
Available-for-sale securities	0		0			0
Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Corporate bonds
Available-for-sale securities:
Available-for-sale securities	23,642		23,642
Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3)
Assets
Trading securities	0		0			0
Available-for-sale securities:
Available-for-sale securities	3,503		3,503			3,690
Gross asset value of derivatives	0		0			0
Liabilities
Gross liability value of derivatives	0		0			0
Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities—residential
Available-for-sale securities:
Available-for-sale securities	0		0			0
Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Industrial revenue bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	3,503	$ 3,736	3,503	$ 3,736	$ 3,537	3,690	$ 3,727	$ 3,859
Available-for-sale securities:
Available-for-sale securities	3,503		3,503			$ 3,690
Liabilities
Principal reduction	(34)	$ 9	(17)	$ 47
Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Corporate bonds
Available-for-sale securities:
Available-for-sale securities	$ 0		$ 0

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other real estate owned	$ 63,737,000	$ 77,626,000	$ 71,453,000	$ 96,283,000	$ 120,270,000	$ 129,396,000
Transfers of assets and liabilities between levels of the fair value	0	0
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other real estate owned, gross	54,400,000	85,100,000
Other real estate owned, valuation allowance	$ 13,100,000	$ 19,100,000

Fair Value - Fair Value Measure

Fair Value - Fair Value Measurements on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) - Fair Value on Recurring Basis - Significant Unobservable Inputs (Level 3) - Industrial revenue bonds - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 3,537	$ 3,727	$ 3,690	$ 3,859
Principal reduction	0		(170)	(170)
Included in other comprehensive income	(34)	9	(17)	47
Ending balance	$ 3,503	$ 3,736	$ 3,503	$ 3,736

Fair Value - Quantitative Infor

Fair Value - Quantitative Information About Recurring Level 3 Fair Value Measurements (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Transfers of assets and liabilities between levels of the fair value	$ 0	$ 0
Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value	5,583,699,000	5,403,670,000
Significant Unobservable Inputs (Level 3) | Fair Value on Recurring Basis | Industrial revenue bonds | Discounted Cash Flow
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Fair Value	$ 3,503,000	$ 3,690,000
Illiquidity factor	0.50%	0.50%
Significant Unobservable Inputs (Level 3) | Fair Value on Recurring Basis | Industrial revenue bonds | Discounted Cash Flow | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	3.50%	3.50%
Significant Unobservable Inputs (Level 3) | Fair Value on Recurring Basis | Industrial revenue bonds | Discounted Cash Flow | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	3.60%	3.60%

Fair Value - Assets and Liabi78

Fair Value - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 63,737	$ 71,453	$ 77,626	$ 96,283	$ 120,270	$ 129,396
Fair Value on Nonrecurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Fair Value Disclosure	0		0
Other repossessed assets	0		0
Impaired loans	0		0
Fair Value on Nonrecurring Basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Fair Value Disclosure	0		0
Other repossessed assets	189		150
Impaired loans	0		0
Fair Value on Nonrecurring Basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate Owned, Fair Value Disclosure	41,292		66,048
Other repossessed assets	0		0
Impaired loans	$ 204		$ 754

Fair Value - Quantitative Inf79

Fair Value - Quantitative Information About Nonrecurring Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 63,737	$ 77,626	$ 71,453	$ 96,283	$ 120,270	$ 129,396
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	5,312,415	5,124,231
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	6,554,902	6,319,539
Other real estate owned | Fair Value of Property | Fair Value on Nonrecurring Basis | Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 41,292	$ 66,048
Weighted Average	7.82%	7.86%
Impaired loans | Fair Value of Collateral | Fair Value on Nonrecurring Basis | Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 204	$ 754
Weighted Average	7.10%	7.60%

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014		Jun. 30, 2014	Dec. 31, 2013
Financial Assets
Trading securities		$ 2,898	$ 2,410
Investment securities available-for-sale		600,138	555,893
Investment securities held-to-maturity		431,764	443,379
FDIC indemnification asset		11,764	16,762		$ 25,529	$ 33,610
Gross asset value of derivatives		125	4
Financial Liabilities
Contractual deposits		1,521,810	1,418,700
Federal Home Loan Bank advances		355,995	296,091
Gross liability value of derivatives		713	26
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Cash and cash equivalents		201,286	188,135
Trading securities		0	0
Investment securities available-for-sale		0	0
Investment securities held-to-maturity		0	0
Loans, net		0	0
FDIC indemnification asset		0	0
Receivable from FDIC		0	0
Other earning assets	[1]	0	0
Gross asset value of derivatives		0	0
Total financial assets		201,286	188,135
Financial Liabilities
Non-contractual deposits		0	0
Contractual deposits		0	0
Federal Home Loan Bank advances		0	0
Short-term borrowings		0	0
Long-term borrowings			0
Subordinated debentures		0	0
Gross liability value of derivatives		0	0
Total financial liabilities		0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Cash and cash equivalents		0	0
Trading securities		2,898	2,410
Investment securities available-for-sale		596,635	552,203
Investment securities held-to-maturity		431,764	443,379
Loans, net		7,127	5,516
FDIC indemnification asset		0	0
Receivable from FDIC		2,652	3,661
Other earning assets	[1]	0	0
Gross asset value of derivatives		125	4
Total financial assets		1,041,201	1,007,173
Financial Liabilities
Non-contractual deposits		0	0
Contractual deposits		0	0
Federal Home Loan Bank advances		355,990	296,038
Short-term borrowings		18,466	23,407
Long-term borrowings			0
Subordinated debentures		0	0
Gross liability value of derivatives		713	26
Total financial liabilities		375,169	319,471
Significant Unobservable Inputs (Level 3)
Financial Assets
Cash and cash equivalents		0	0
Trading securities		0	0
Investment securities available-for-sale		3,503	3,690
Investment securities held-to-maturity		0	0
Loans, net		5,244,497	5,052,836
FDIC indemnification asset		11,764	16,762
Receivable from FDIC		0	0
Other earning assets	[1]	52,651	50,943
Gross asset value of derivatives		0	0
Total financial assets		5,312,415	5,124,231
Financial Liabilities
Non-contractual deposits		3,970,613	3,836,400
Contractual deposits		1,516,474	1,415,122
Federal Home Loan Bank advances		0	0
Short-term borrowings		0	0
Long-term borrowings			54,235
Subordinated debentures		96,612	97,913
Gross liability value of derivatives		0	0
Total financial liabilities		5,583,699	5,403,670
Carrying Value
Financial Assets
Cash and cash equivalents		201,286	188,135
Trading securities		2,898	2,410
Investment securities available-for-sale		600,138	555,893
Investment securities held-to-maturity		426,427	436,962
Loans, net		5,158,351	4,950,008
FDIC indemnification asset		11,764	16,762
Receivable from FDIC		2,652	3,661
Other earning assets	[1]	52,651	50,943
Gross asset value of derivatives		125	4
Total financial assets		6,456,292	6,204,778
Financial Liabilities
Non-contractual deposits		3,970,613	3,836,400
Contractual deposits		1,521,810	1,418,700
Federal Home Loan Bank advances		355,995	296,091
Short-term borrowings		18,466	23,407
Long-term borrowings			52,526
Subordinated debentures		84,688	87,155
Gross liability value of derivatives		713	26
Total financial liabilities		5,952,285	5,714,305
Estimated Fair Value
Financial Assets
Cash and cash equivalents		201,286	188,135
Trading securities		2,898	2,410
Investment securities available-for-sale		600,138	555,893
Investment securities held-to-maturity		431,764	443,379
Loans, net		5,251,624	5,058,352
FDIC indemnification asset		11,764	16,762
Receivable from FDIC		2,652	3,661
Other earning assets		52,651	50,943	[1]
Gross asset value of derivatives		125	4
Total financial assets		6,554,902	6,319,539
Financial Liabilities
Non-contractual deposits		3,970,613	3,836,400
Contractual deposits		1,516,474	1,415,122
Federal Home Loan Bank advances		355,990	296,038
Short-term borrowings		18,466	23,407
Long-term borrowings			54,235
Subordinated debentures		96,612	97,913
Gross liability value of derivatives		713	26
Total financial liabilities		$ 5,958,868	$ 5,723,141
[1]	Includes Federal Reserve Bank, Federal Home Loan Bank and Bankers Bank stocks.

Derivative and Hedging Activi81

Derivative and Hedging Activities - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)cash_flow_hedge	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Estimated gain to be reclassified to interest income in the next twelve months	$ 2,000,000
Discontinued cash flow hedges | cash_flow_hedge			0
Gain (loss) reclassified into earnings due to discontinuance			$ 0
Liability Derivatives, Fair Value	713,000		713,000		$ 26,000
Non Interest Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	31,000	$ 600,000	36,000	$ 1,700,000
Non Interest Expenses [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	46,000	$ 0	(1,000)	$ 0
Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Liability Derivatives, Fair Value	685,000		685,000
Derivatives designated as hedging instruments | Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Liability Derivatives, Fair Value	685,000		685,000
Derivatives designated as hedging instruments | Cash Flow Hedging | Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Liability Derivatives, Fair Value	$ 564,000		$ 564,000

Derivative and Hedging Activi82

Derivative and Hedging Activities - Summary of Derivative Instrument Contracts at Fair Value and Balance Sheet Classification(Detail) $ in Thousands	Jun. 30, 2015USD ($)derivative_instrument	Dec. 31, 2014USD ($)
Derivatives, Fair Value [Line Items]
Gross asset value of derivatives	$ 125	$ 4
Asset Derivatives, Notional Amount	76,847	1,640
Liability Derivatives, Fair Value	713	26
Liability Derivatives, Notional Amount	120,448	7,578
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Gross asset value of derivatives	86
Liability Derivatives, Fair Value	685
Derivatives designated as hedging instruments | Interest rate swap
Derivatives, Fair Value [Line Items]
Gross asset value of derivatives	86
Liability Derivatives, Fair Value	$ 685
Derivatives designated as hedging instruments | Interest rate swap | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Number of Instruments Held | derivative_instrument	1
Gross asset value of derivatives	$ 86	0
Asset Derivatives, Notional Amount	$ 70,000	0
Derivatives designated as hedging instruments | Interest rate swap | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Number of Instruments Held | derivative_instrument	2
Liability Derivatives, Fair Value	$ 685	0
Liability Derivatives, Notional Amount	$ 115,000	0
Derivatives not designated as hedging instruments | Forward loan sales contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Number of Instruments Held | derivative_instrument	37
Gross asset value of derivatives	$ 39	4
Asset Derivatives, Notional Amount	$ 6,847	1,640
Derivatives not designated as hedging instruments | Forward loan sales contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Number of Instruments Held | derivative_instrument	24
Liability Derivatives, Fair Value	$ 28	26
Liability Derivatives, Notional Amount	$ 5,448	$ 7,578

Derivative and Hedging Activi83

Derivative and Hedging Activities -Summary of Derivative Instrument on the Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Non Interest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 31	$ 600	$ 36	$ 1,700
Non Interest Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	46	$ 0	(1)	$ 0
Interest rate swap | Derivatives designated as hedging instruments | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion)	(835)		(32)
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0		0
Interest rate swap | Interest income | Derivatives designated as hedging instruments | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion)	$ 459		$ 567

Derivative and Hedging Activi84

Derivative and Hedging Activities - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Offsetting of derivative assets:
Offsetting of Derivative Assets, Gross Amount of Recognized Assets	$ 125	$ 4
Offsetting of derivative liabilities:
Offsetting of Derivative Liabilities, Gross Amount of Recognized Assets	713	$ 26
Derivatives designated as hedging instruments
Offsetting of derivative assets:
Offsetting of Derivative Assets, Gross Amount of Recognized Assets	86
Offsetting of Derivative Assets, Gross Amount Offset in the Balance Sheets	0
Offsetting of Derivative Assets, Net Amount of Assets Presented in the Balance Sheets	86
Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Offsetting of Derivative Assets, Financial Instruments	0
Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received	0
Offsetting of Derivative Assets, Net Amount	86
Offsetting of derivative liabilities:
Offsetting of Derivative Liabilities, Gross Amount of Recognized Assets	685
Offsetting of Derivative Liabilities, Gross Amount Offset in the Balance Sheets	0
Offsetting of Derivative Liabilities, Net Amount of Assets Presented in the Balance Sheets	685
Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Financial Instruments	0
Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received	820
Offsetting of Derivative Liabilities, Net Amount	(135)
Derivatives designated as hedging instruments | Interest Rate Swap
Offsetting of derivative assets:
Offsetting of Derivative Assets, Gross Amount of Recognized Assets	86
Offsetting of Derivative Assets, Gross Amount Offset in the Balance Sheets	0
Offsetting of Derivative Assets, Net Amount of Assets Presented in the Balance Sheets	$ 86
Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Offsetting of Derivative Assets, Financial Instruments
Offsetting of Derivative Assets, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received	$ 0
Offsetting of Derivative Assets, Net Amount	86
Offsetting of derivative liabilities:
Offsetting of Derivative Liabilities, Gross Amount of Recognized Assets	685
Offsetting of Derivative Liabilities, Gross Amount Offset in the Balance Sheets	0
Offsetting of Derivative Liabilities, Net Amount of Assets Presented in the Balance Sheets	$ 685
Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Financial Instruments
Offsetting of Derivative Liabilities, Gross Amounts Not Offset in the Balance Sheet, Cash Collateral Received	$ 820
Offsetting of Derivative Liabilities, Net Amount	$ (135)