BNC Bancorp (BNNC) 10-Q 9 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 04, 2015
Document and entity [Abstract]
Entity Registrant Name	BNC Bancorp
Entity Central Index Key	1,210,227
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		38,147,976

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 50,883	$ 44,659
Interest-earning deposits in other banks	19,624	40,535
Investment securities available-for-sale, at fair value	404,594	269,290
Investment securities held-to-maturity, at amortized cost (fair value of $245,131 and $241,997 at September 30, 2015 and December 31, 2014, respectively)	241,138	237,092
Federal Home Loan Bank stock, at cost	8,511	10,562
Loans held for sale	37,437	37,280
Loans:
Originated loans	2,587,572	2,116,441
Acquired loans	1,391,061	958,657
Less allowance for loan losses	(30,833)	(30,399)
Net loans	3,947,800	3,044,699
Accrued interest receivable	15,528	14,514
Premises and equipment, net	99,955	87,761
Other real estate owned	37,280	42,531
FDIC indemnification asset	2,080	5,097
Investment in bank-owned life insurance	115,914	93,396
Goodwill and other intangible assets, net	146,623	83,701
Other assets	73,751	61,391
Total assets	5,201,118	4,072,508
Deposits:
Non-interest bearing demand	738,529	534,792
Interest-bearing demand	2,157,801	1,657,931
Time deposits	1,478,161	1,203,674
Total deposits	4,374,491	3,396,397
Short-term borrowings	77,409	127,934
Long-term debt	189,661	133,814
Accrued expenses and other liabilities	37,060	23,975
Total liabilities	4,678,621	3,682,120
Shareholders' equity:
Preferred stock, no par value; authorized 20,000,000 shares; 0 shares issued and outstanding at September 30, 2015 and December 31, 2014	0	0
Common stock, no par value; authorized 60,000,000 shares; 33,317,088 and 27,777,737 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	389,802	281,488
Common stock, non-voting, no par value; authorized 20,000,000 shares; 4,820,844 shares issued and outstanding at September 30, 2015 and December 31, 2014	33,507	33,507
Retained earnings	91,753	65,211
Stock in directors rabbi trust	(4,964)	(3,429)
Directors deferred fees obligation	4,964	3,429
Accumulated other comprehensive income	7,435	10,182
Total shareholders' equity	522,497	390,388
Total liabilities and shareholders' equity	$ 5,201,118	$ 4,072,508

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Investment securities held-to-maturity	$ 245,131	$ 241,997
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Authorized	20,000,000	20,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common stock
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	60,000,000	60,000,000
Common Stock, Shares, Issued	33,317,088	27,777,737
Common Stock, Shares, Outstanding	33,317,088	27,777,737
Common stock - nonvoting
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	4,820,844	4,820,844
Common Stock, Shares, Outstanding	4,820,844	4,820,844

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest Income:
Loans, including fees	$ 48,050	$ 36,330	$ 127,964	$ 101,490
Investment securities:
Taxable	1,842	1,139	4,269	3,415
Tax-exempt	3,259	3,257	9,600	9,931
Interest-earning balances and other	162	150	414	391
Total interest income	53,313	40,876	142,247	115,227
Interest Expense:
Demand deposits	2,168	1,377	5,575	4,163
Time deposits	3,097	2,218	9,020	7,030
Short-term borrowings	37	106	152	327
Long-term debt	1,752	1,035	4,438	2,952
Total interest expense	7,054	4,736	19,185	14,472
Net Interest Income	46,259	36,140	123,062	100,755
Provision for loan losses	198	1,304	609	6,005
Net interest income after provision for loan losses	46,061	34,836	122,453	94,750
Non-Interest Income:
Mortgage fees	3,031	2,128	8,307	5,640
Service charges	2,284	1,631	5,738	4,457
Earnings on bank-owned life insurance	705	559	1,960	1,748
Gain (loss) on sale of investment securities, net	794	54	839	(511)
Other	2,355	1,935	7,318	5,903
Total non-interest income	9,169	6,307	24,162	17,237
Non-Interest Expense:
Salaries and employee benefits	20,114	15,759	53,726	44,780
Occupancy	3,211	2,647	8,410	6,788
Furniture and equipment	1,655	1,652	4,880	4,820
Data processing and supplies	1,268	895	3,502	2,864
Advertising and business development	493	667	1,756	2,041
Insurance, professional and other services	3,155	2,128	7,256	6,936
FDIC insurance assessments	824	821	2,261	2,232
Loan, foreclosure and other real estate owned expenses	2,352	2,586	8,213	6,307
Other	5,113	2,673	11,571	7,343
Total non-interest expense	38,185	29,828	101,575	84,111
Income before income tax expense	17,045	11,315	45,040	27,876
Income tax expense	5,106	3,047	13,329	6,991
Net Income	$ 11,939	$ 8,268	$ 31,711	$ 20,885
Earnings Per Share [Abstract]
Basic (USD per share)	$ 0.31	$ 0.28	$ 0.92	$ 0.73
Diluted (USD per share)	0.31	0.28	0.92	0.73
Dividends declared and paid per common share	$ 0.05	$ 0.05	$ 0.15	$ 0.15

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 11,939	$ 8,268	$ 31,711	$ 20,885
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract]
Unrealized holding gains (losses) on investments securities available-for-sale	908	2,910	(827)	12,745
Tax effect	(336)	(1,077)	306	(4,716)
Reclassification of (gains) losses recognized in net income	(794)	(54)	(839)	511
Tax effect	293	20	310	(189)
Amortization of unrealized gains on investment securities transferred from available-for-sale to held-to-maturity	(204)	(161)	(561)	(657)
Tax effect	76	59	208	243
Net of tax amount	(57)	1,697	(1,403)	7,937
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Unrealized holding (losses) gains	(1,390)	484	(2,134)	(2,088)
Tax effect	514	(179)	790	773
Reclassification of losses recognized in net income	0	0	0	457
Tax effect	0	0	0	(171)
Net of tax amount	(876)	305	(1,344)	(1,029)
Total other comprehensive (loss) income	(933)	2,002	(2,747)	6,908
Total comprehensive income	$ 11,006	$ 10,270	$ 28,964	$ 27,793

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	South Street Financial Corporation	Community First	Common stock	Common stockSouth Street Financial Corporation	Common stockCommunity First	Common stockValley Financial Corporation	Common stock - nonvoting	Retained earnings	Stock in directors rabbi trust	Directors deferred fees obligation	Accumulated other comprehensive income
Beginning Balance, Value at Dec. 31, 2013	$ 271,330			$ 181,684				$ 44,781	$ 41,559	$ (3,143)	$ 3,143	$ 3,306
Beginning Balance Shares at Dec. 31, 2013				21,310,832				5,992,213
Net income	20,885								20,885
Directors deferred fees	0									(34)	34
Other comprehensive income (loss), net of tax	6,908											6,908
Common Stock Issued Pursuant To [Abstract]
Shares issued for acquisition, Shares					1,139,931	1,190,763
Shares issued for acquisition, Value		$ 19,778	$ 20,128		$ 19,778	$ 20,128
Stock-based compensation, Shares				133,327
Stock-based compensation, Value	1,187			$ 1,187
Dividend reinvestment plan, Shares				14,827
Dividend reinvestment plan, Value	252			$ 252
Stock options exercised, Shares				62,258
Stock options exercised, Value	701			$ 701
Shares Withheld for Payment of Taxes, Shares				(32,279)
Shares Withheld for Payment of Taxes, Value	(542)			$ (542)
Shares Traded to Exercise Stock Options, Shares				(37,158)
Shares Traded to Exercise Stock Options, Value	(663)			$ (663)
Excess income tax benefit	27			27
Stock Repurchased and Retired During Period, Shares								(300,000)
Stock Repurchased During Period, Value	(5,081)							$ (5,081)
Cash Dividends:
Common stock, $0.15 per share	(4,263)								(4,263)
Ending Balance, Value at Sep. 30, 2014	330,647			$ 222,552				$ 39,700	58,181	(3,177)	3,177	10,214
Ending Balance, Shares at Sep. 30, 2014				23,782,501				5,692,213
Beginning Balance, Value at Dec. 31, 2014	390,388			$ 281,488				$ 33,507	65,211	(3,429)	3,429	10,182
Beginning Balance Shares at Dec. 31, 2014				27,777,737				4,820,844
Net income	31,711								31,711
Directors deferred fees	0									(1,535)	1,535
Other comprehensive income (loss), net of tax	(2,747)											(2,747)
Common Stock Issued Pursuant To [Abstract]
Shares issued for acquisition, Shares							5,500,697
Shares issued for acquisition, Value	108,700						$ 108,700
Stock-based compensation, Shares				111,413
Stock-based compensation, Value	1,994			$ 1,994
Dividend reinvestment plan, Shares				12,673
Dividend reinvestment plan, Value	231			$ 231
Stock options exercised, Shares				206,140
Stock options exercised, Value	2,440			$ 2,440
Shares Withheld for Payment of Taxes, Shares				(31,385)
Shares Withheld for Payment of Taxes, Value	(576)			$ (576)
Shares Traded to Exercise Stock Options, Shares				(60,187)
Shares Traded to Exercise Stock Options, Value	(1,047)			$ (1,047)
Excess income tax benefit	194			$ 194
Stock Repurchased and Retired During Period, Shares				(200,000)
Stock Repurchased During Period, Value	(3,622)			$ (3,622)
Cash Dividends:
Common stock, $0.15 per share	(5,169)								(5,169)
Ending Balance, Value at Sep. 30, 2015	$ 522,497			$ 389,802				$ 33,507	$ 91,753	$ (4,964)	$ 4,964	$ 7,435
Ending Balance, Shares at Sep. 30, 2015				33,317,088				4,820,844

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.15	$ 0.15

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income	$ 31,711	$ 20,885
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	609	6,005
Depreciation and amortization	4,792	4,341
Amortization of premiums, net	3,048	3,200
Amortization of intangible assets	2,782	1,621
Accretion of fair value purchase accounting adjustments	(16,621)	(8,697)
Cash flow hedge expense	0	163
Stock-based compensation	1,994	1,187
Deferred compensation	265	338
Earnings on bank-owned life insurance	(1,960)	(1,748)
(Gain) loss on sale of investment securities, net	(839)	511
Gain on disposal of premises and equipment	(382)	(21)
Losses on other real estate owned	4,359	3,136
Gain on sale of loans held for sale	(8,307)	(5,640)
Origination of loans held for sale	(274,734)	(211,835)
Proceeds from sales of loans held for sale	281,344	212,809
Decrease in accrued interest receivable	1,249	1,768
Payments received from FDIC under loss-share agreements	4,758	9,076
Decrease (increase) in other assets	1,278	(9,164)
Increase (decrease) in accrued expenses and other liabilities	12,382	(10,863)
Net cash provided by operating activities	47,728	17,072
Investing activities
Purchases of investment securities available-for-sale	(137,909)	(21,339)
Purchases of investment securities held-to-maturity	(17,910)	(5,269)
Proceeds from sales of investment securities available-for-sale	118,709	40,646
Proceeds from sales of investment securities held-to-maturity	0	8,651
Proceeds from maturities and payments of investment securities available-for-sale	32,865	36,899
Proceeds from maturities and payments of investment securities held-to-maturity	11,788	2,831
Redemption of Federal Home Loan Bank stock	6,389	1,974
Net increase in loans	(285,871)	(167,127)
Purchases of premises and equipment	(7,801)	(3,201)
Proceeds from disposal of premises and equipment	1,416	21
Investment in bank-owned life insurance	(674)	(171)
Investment in other real estate owned	(1,414)	(957)
Proceeds from sales of other real estate owned	15,503	23,116
Net cash received from acquisitions	13,263	74,418
Net cash used in investing activities	(251,646)	(9,508)
Financing activities
Net increase (decrease) in deposits	332,088	(51,115)
Net (decrease) increase in short-term borrowings	(136,316)	(4,029)
Net increase in long-term-debt	1,202	58,500
Common stock repurchased	(3,622)	(5,081)
Common stock issued from exercise of stock options, net of taxes	2,440	38
Common stock issued pursuant to dividend reinvestment plan	231	252
Common stock repurchased in lieu of income taxes	(1,623)	(542)
Cash dividends paid	(5,169)	(4,263)
Net cash provided by (used in) financing activities	189,231	(6,240)
Net (decrease) increase in cash and cash equivalents	(14,687)	1,324
Cash and cash equivalents, beginning of period	85,194	108,390
Cash and cash equivalents, end of period	70,507	109,714
Supplemental Statement of Cash Flows Disclosure
Interest paid	18,379	17,863
Income taxes paid	1,785	2,400
Summary of Noncash Investing and Financing Activities
Transfer of loans to other real estate owned	7,205	17,055
Transfer of loans held for sale to loans	2,405	14,659
FDIC indemnification asset increase for losses, net	$ 2,026	$ 1,795

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Basis of presentation	BASIS OF PRESENTATION Organization BNC Bancorp (the “Company”) is a bank holding company for Bank of North Carolina (“BNC”), a wholly owned subsidiary, headquartered in High Point, North Carolina. BNC is a full service commercial bank providing commercial banking services tailored to the particular banking needs of the communities it serves in North Carolina, South Carolina, and Virginia. BNC’s primary source of revenue is derived from loans to customers, who are predominantly individuals and small to medium size businesses in BNC’s market areas. The Company is subject to the rules and regulations of the Board of Governors of the Federal Reserve System. BNC is operating under the banking laws of North Carolina, and is subject to the rules and regulations of the North Carolina Commissioner of Banks and the Federal Deposit Insurance Corporation (“FDIC”). Accordingly, the Company and BNC are examined periodically by those regulatory authorities. These consolidated financial statements and notes are presented in accordance with the instructions for Form 10-Q and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, all normal recurring adjustments necessary for a fair statement of the consolidated financial position and consolidated results of operations have been made. The information contained in the consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 should be referred to in connection with these unaudited interim consolidated financial statements. Certain amounts in the 2014 consolidated financial statements have been reclassified to conform to 2015 presentation. These reclassifications had no effect on net income or shareholders' equity as previously reported. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those relating to the allowance for loan losses, determination of fair value of acquired assets and assumed liabilities, and valuation of goodwill and intangible assets. Recently Adopted and Issued Accounting Standards In September 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (Topic 805) , which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize measurement period adjustments during the period in which it determines the amount of the adjustment. ASU 2015-16 is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (Subtopic 835-30) , which amends the presentation of debt issuance costs in the balance sheet as a direct deduction from the related debt liability. This update affects disclosures related to debt issuance costs but does not affect existing recognition and measurement guidance for these items. ASU 2015-03 is effective for annual and interim periods beginning after December 15, 2015. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In February 2015, the FASB issued ASU 2015-02 Amendments to the Consolidation Analysis (Topic 810) , which amends the consolidation analysis required under GAAP. The revised guidance amends the consolidation analysis based on certain fee arrangements or relationships to the reporting entity and, for limited partnerships, requires entities to consider the limited partner’s rights relative to the general partner. Although the amendments are expected to result in the deconsolidation of many entities, the Company will need to reevaluate all of its previous consolidation conclusions. ASU 2015-02 is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted (including during an interim period), provided that the guidance is applied as of the beginning of the annual period containing the adoption date. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) . This ASU was developed as a joint project with the International Accounting Standards Board to remove inconsistencies in revenue requirements and provide a more robust framework for addressing revenue issues. The ASU’s core principle is that an entity should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14, which deferred the effective date by one year (i.e., interim and annual reporting periods beginning after December 15, 2017). Early adoption is permitted, but not before the original effective date (i.e., interim and annual reporting periods beginning after December 15, 2016). The ASU may be adopted using either a modified retrospective method or a full retrospective method. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements. In January 2014, the FASB issued ASU No. 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (Subtopic 310-40) , to clarify that an in substance repossession or foreclosure occurs upon either the creditor obtaining legal title to the residential real estate property or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. The amendments are effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2014. The amendments may be adopted using either a modified retrospective transition method or a prospective transition method and early adoption is permitted. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS Pending Acquisition of Southcoast Financial Corporation On August 14, 2015, the Company entered into a Purchase and Assumption Agreement to acquire Southcoast Financial Corporation ("Southcoast"), the holding company for Southcoast Community Bank. Southcoast operates ten branches in and around Charleston, South Carolina and has approximately $506 million in total assets. Under the merger agreement, Southcoast's shareholders will receive a fixed price of $13.35 for each share of Southcoast common stock, payable in shares of the Company's voting common stock, based upon the 20 -day volume weighted average price of the Company's common stock prior to the closing of the merger, subject to maximum and minimum exchange ratios. The Company anticipates the acquisition will close in the first quarter of 2016, subject to customary closing conditions, including regulatory approval and approval of Southcoast’s shareholders. Acquisition of Branches from CertusBank, N.A. On October 13, 2015, the Company completed the acquisition of seven branches in upstate South Carolina from CertusBank, N.A., pursuant to the terms of the Purchase and Assumption Agreement dated June 1, 2015. The Company is in the process of obtaining third-party valuations to determine the fair value of assets acquired and liabilities assumed from CertusBank, N.A. As a result, it is impracticable to disclose the preliminary purchase price allocation as of the filing date of these unaudited consolidated financial statements. Acquisition of Valley Financial Corporation On July 1, 2015, the Company completed the acquisition of Valley Financial Corporation ("Valley"), the holding company for Valley Bank, pursuant to the terms of the Agreement and Plan of Merger dated November 17, 2014. Under the merger agreement, Valley's shareholders received 1.1081 shares of the Company's voting common stock for each share of Valley common stock owned. A summary of assets received and liabilities assumed for Valley, as well as the associated fair value adjustments, are as follows: As Recorded by Valley Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 13,263 $ — $ 13,263 Investment securities available-for-sale 152,125 (796 ) (1) 151,329 Federal Home Loan Bank stock, at cost 4,338 — 4,338 Loans 624,006 (15,973 ) (2) 608,033 Premises and equipment 8,934 892 (3) 9,826 Accrued interest receivable 2,263 — 2,263 Other real estate owned 8,114 — 8,114 Core deposit intangible — 6,964 (4) 6,964 Other assets 31,297 3,641 (5) 34,938 Total assets acquired $ 844,340 $ (5,272 ) 839,068 Liabilities Deposits $ (646,053 ) $ (1,086 ) (6) (647,139 ) Borrowings (141,087 ) 548 (7) (140,539 ) Other liabilities (972 ) (458 ) (8) (1,430 ) Total liabilities assumed $ (788,112 ) $ (996 ) (789,108 ) Net assets acquired 49,960 Total consideration paid 108,700 Goodwill $ 58,740 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of investment securities available-for-sale. (2) Adjustment to reflect estimated fair value of loans. (3) Adjustment to reflect estimated fair value of premises and equipment. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (7) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (8) Adjustment to reflect the estimated fair market value of certain leases. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (5,500,697 shares) $ 107,924 Fair value of Valley stock options assumed 773 Cash payments to shareholders 3 Total consideration paid $ 108,700 With this acquisition, the Company expanded its footprint into Roanoke, Virginia with the addition of nine branches and an experienced in-market team that enhances the Company’s ability to compete in that market. The Company projects cost savings will be recognized in future periods through the elimination of redundant operations. None of the goodwill associated with this acquisition is deductible for income tax purposes. All goodwill related to this acquisition was allocated to the banking operations reporting unit. The following table presents financial information regarding the former Valley operations included in our Consolidated Statements of Income from the date of acquisition through September 30, 2015 under the column “Actual from acquisition date.” These amounts do not include direct costs as explained above. The following table presents unaudited pro-forma information as if the acquisition of Valley had occurred on January 1, 2015 under the “Pro-forma” columns. In addition, the following table presents unaudited pro-forma information as if the acquisition of Valley, Harbor Bank Group, Inc., Community First Financial Group, Inc., and South Street Financial Corp. had occurred on January 1, 2014 under the “Pro-forma” columns. This pro-forma information gives effect to certain adjustments, including purchase accounting fair value adjustments, amortization of core deposit and other intangibles and related income tax effects and is based on our historical results for the periods presented. Transaction-related costs related to the acquisition are not reflected in the pro-forma amounts. The pro-forma information does not necessarily reflect the results of operations that would have occurred had the Company acquired Valley at the beginning of 2014. Cost savings are also not reflected in the unaudited pro-forma amounts for three and nine months ended September 30, 2015 and 2014, respectively (dollars in thousands). Actual from acquisition date through September 30, 2015 Pro-forma for three months ended September 30, Pro-forma for nine months ended September 30, 2015 2014 2015 2014 Net interest income $ 6,390 $ 46,259 $ 45,439 $ 137,779 $ 134,836 Non-interest income 413 9,169 8,302 26,944 24,637 Net income 1,382 11,939 12,413 28,498 36,836 Pro-forma earnings per share: Basic $ 0.31 $ 0.33 $ 0.75 $ 0.97 Diluted $ 0.31 $ 0.32 $ 0.75 $ 0.96 Acquisition of Harbor Bank Group, Inc. On December 1, 2014, the Company completed the acquisition of Harbor Bank Group, Inc., the holding company for Harbor National Bank ("Harbor"). Under the merger agreement, Harbor's shareholders received 0.950 shares of the Company's voting common stock for each share of Harbor common stock owned. A summary of assets received and liabilities assumed for Harbor, as well as the associated fair value adjustments, are as follows: As Recorded by Harbor Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 5,833 $ — $ 5,833 Investment securities available-for-sale 9,200 — 9,200 Federal Home Loan Bank stock, at cost 1,259 — 1,259 Loans 293,848 (4,207 ) (1) 289,641 Premises and equipment 1,801 — 1,801 Accrued interest receivable 643 — 643 Other real estate owned 11 — 11 Core deposit intangible — 3,700 (2) 3,700 Other assets 6,718 381 (3) 7,099 Total assets acquired $ 319,313 $ (126 ) 319,187 Liabilities Deposits $ (254,521 ) $ (253 ) (4) (254,774 ) Borrowings (29,720 ) (184 ) (5) (29,904 ) Other liabilities (2,268 ) (85 ) (6) (2,353 ) Total liabilities assumed $ (286,509 ) $ (522 ) (287,031 ) Net assets acquired 32,156 Total consideration paid (3,082,714 shares of voting common stock) 51,003 Goodwill $ 18,847 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect recording of core deposit intangible. (3) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (4) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (5) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (6) Adjustment to reflect the estimated fair market value of certain leases. With this acquisition, the Company expanded its presence in Charleston, South Carolina through the addition of four branches, a low-cost base of core deposits and an experienced in-market team that enhances our ability to grow in that market. Additionally, goodwill was also created by the expected cost savings that will be recognized in future periods through the elimination of redundant operations. None of the goodwill associated with this acquisition is deductible for income tax purposes. All goodwill related to this acquisition was allocated to the banking operations reporting unit. Acquisition of Community First Financial Group, Inc. On June 1, 2014, the Company completed the acquisition of Community First Financial Group, Inc. ("Community First"), the parent company of Harrington Bank, FSB, pursuant to the terms of the Agreement and Plan of Merger dated December 17, 2013. Community First shareholders could elect to receive 0.4069 shares of the Company's voting common stock for each share of Community First common stock or cash in the amount of $5.90 per share, subject to allocation and pro-rata procedures to ensure that approximately 75% of Community First common shares were converted into the right to receive the Company's voting common stock, while the remaining 25% were converted into the right to receive cash. As part of the closing, Community First's preferred shareholders received cash payments equal to the liquidation value of their preferred shares. A summary of assets received and liabilities assumed for Community First, as well as the associated fair value adjustments, are as follows: As Recorded by Community First Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 47,330 $ — $ 47,330 Investment securities available-for-sale 12,000 — 12,000 Federal Home Loan Bank stock, at cost 293 — 293 Loans 152,885 (15,139 ) (1) 137,746 Premises and equipment 545 (131 ) (2) 414 Accrued interest receivable 436 — 436 Other real estate owned 1,419 (271 ) (3) 1,148 Core deposit intangible — 3,624 (4) 3,624 Other assets 6,849 4,552 (5) 11,401 Total assets acquired $ 221,757 $ (7,365 ) 214,392 Liabilities Deposits $ (191,486 ) $ (180 ) (6) (191,666 ) Borrowings (4,560 ) — (4,560 ) Other liabilities (1,063 ) (205 ) (7) (1,268 ) Total liabilities assumed $ (197,109 ) $ (385 ) (197,494 ) Net assets acquired 16,898 Total consideration paid 26,734 Goodwill $ 9,836 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect estimated fair value of premises and equipment. (3) Adjustment to reflect estimated fair value of other real estate owned. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (7) Adjustment to reflect the estimated fair market value of certain leases. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (1,190,763 shares) $ 20,128 Redemption of preferred stock 850 Cash payments to common shareholders 5,756 Total consideration paid $ 26,734 With this acquisition, the Company expanded its presence in the Raleigh-Durham-Chapel Hill area of North Carolina through the addition of three branches, a low-cost base of core deposits and an experienced in-market team that enhances our ability to grow in that market. Additionally, goodwill was also created by the expected cost savings that will be recognized in future periods through the elimination of redundant operations. None of the goodwill associated with this acquisition is deductible for income tax purposes. All goodwill related to this acquisition was allocated to the banking operations reporting unit. Acquisition of South Street Financial Corp. On April 1, 2014, the Company completed the acquisition of South Street Financial Corp. ("South Street"), the parent company of Home Savings Bank of Albemarle, Inc. SSB, pursuant to the terms of the Agreement and Plan of Merger dated December 17, 2013. South Street shareholders could elect to receive 0.60 shares of the Company's voting common stock for each share of South Street common stock owned, or cash in the amount of $8.85 per share. Eighty percent of South Street's common shares were converted into the right to receive the Company's voting common stock, while the remaining 20% were converted into the right to receive cash. As part of the closing, each share of South Street's Series A Preferred Stock automatically converted into one share of South Street common stock. A summary of assets received and liabilities assumed for South Street, as well as the associated fair value adjustments, are as follows: As Recorded by South Street Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 39,680 $ — $ 39,680 Investment securities available-for-sale 13,000 — 13,000 Federal Home Loan Bank stock, at cost 895 — 895 Loans 188,386 (10,433 ) (1) 177,953 Premises and equipment 9,273 (611 ) (2) 8,662 Accrued interest receivable 592 — 592 Other real estate owned 12,358 (3,788 ) (3) 8,570 Core deposit intangible — 2,387 (4) 2,387 Other assets 13,554 4,878 (5) 18,432 Total assets acquired $ 277,738 $ (7,567 ) 270,171 Liabilities Deposits $ (236,526 ) $ (1,188 ) (6) (237,714 ) Borrowings (12,300 ) — (12,300 ) Other liabilities (7,075 ) — (7,075 ) Total liabilities assumed $ (255,901 ) $ (1,188 ) (257,089 ) Net assets acquired 13,082 Total consideration paid 25,763 Goodwill $ 12,681 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect estimated fair value of premises and equipment. (3) Adjustment to reflect estimated fair value of other real estate owned. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (1,139,931 shares) $ 19,778 Cash payments to common shareholders 5,985 Total consideration paid $ 25,763 With this acquisition, the Company expanded its presence in the metropolitan Charlotte, North Carolina market through the addition of four branches, an attractive loan portfolio and an experienced in-market team that enhances our ability to grow in that market. Additionally, goodwill was also created by the expected cost savings that will be recognized in future periods through the elimination of redundant operations. None of the goodwill associated with this acquisition is deductible for income tax purposes. All goodwill related to this acquisition was allocated to the banking operations reporting unit. The Company incurred transaction-related costs of $4.9 million and $9.0 million during the three and nine months ended September 30, 2015, which were expensed as incurred as a component of non-interest expense. Transaction-related costs primarily included, but were not limited to, severance costs, professional services, data processing fees, marketing and advertising expenses. The Company has determined the above noted acquisitions each constitute a business combination as defined by FASB ASC Topic 805: Business Combinations (“ASC Topic 805”), which establishes principles and requirements for how the acquirer of a business recognizes and measures in its financial statements the identifiable assets acquired and the liabilities assumed. The Company has recorded the assets purchased and liabilities assumed at their estimated fair value in accordance with ASC Topic 805. The estimated fair values are subject to refinement for up to one year after the closing date of the acquisition as additional information regarding closing date fair value becomes available. During this one year period, the causes of any changes in cash flow estimates are considered to determine whether the change results from circumstances that existed at the acquisition date or if the change results from an event that occurred after the date of acquisition.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE Basic earnings per common share is computed using the weighted average number of common shares and participating securities outstanding during the reporting period. Diluted earnings per common share is the amount of earnings available to each share of common stock during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issued for stock options and restricted stock awards (collectively referred to herein as “Stock Rights”). Potentially dilutive common shares are excluded from the computation of dilutive earnings per share in the periods in which the effect would be anti-dilutive. The Company's basic and diluted earnings per share calculations are presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands, except per share amounts) Net income $ 11,939 $ 8,268 $ 31,711 $ 20,885 Weighted average participating common shares - basic 38,057,633 29,471,545 34,460,987 28,558,941 Effects of dilutive Stock Rights 107,448 95,769 83,925 107,539 Weighted average participating common shares - diluted 38,165,081 29,567,314 34,544,912 28,666,480 Basic earnings per common share $ 0.31 $ 0.28 $ 0.92 $ 0.73 Diluted earnings per common share $ 0.31 $ 0.28 $ 0.92 $ 0.73 For the three and nine months ended September 30, 2015 and 2014, respectively, there were no shares of Stock Rights excluded in computing diluted common shares outstanding.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities are presented in the following tables: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2015 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 12,024 $ 348 $ — $ 12,372 State and municipals 171,229 9,819 41 181,007 Corporate debt securities 36,758 38 136 36,660 Asset-backed debt securities 74,720 10 1,204 73,526 Equity securities 11,563 207 497 11,273 Mortgage-backed securities: Residential government sponsored 87,050 1,009 68 87,991 Other government sponsored 1,664 101 — 1,765 $ 395,008 $ 11,532 $ 1,946 $ 404,594 Held-to-maturity: State and municipals $ 227,138 $ 5,494 $ 608 $ 232,024 Corporate debt securities 14,000 67 960 13,107 $ 241,138 $ 5,561 $ 1,568 $ 245,131 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2014 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 17,636 $ 252 $ — $ 17,888 State and municipals 178,263 10,899 227 188,935 Corporate debt securities 13,808 4 197 13,615 Asset-backed debt securities 12,764 — 198 12,566 Equity securities 6,145 85 321 5,909 Mortgage-backed securities: Residential government sponsored 27,450 884 60 28,274 Other government sponsored 1,972 131 — 2,103 $ 258,038 $ 12,255 $ 1,003 $ 269,290 Held-to-maturity: State and municipals $ 213,092 $ 6,266 $ 389 $ 218,969 Corporate debt securities 14,000 48 1,020 13,028 Asset-backed debt securities 10,000 — — 10,000 $ 237,092 $ 6,314 $ 1,409 $ 241,997 The amortized cost and estimated fair value of investment securities at September 30, 2015 , by contractual maturity, are shown below. The expected life of mortgage-backed securities will differ from contractual maturities because borrowers may have the right to call or prepay the underlying mortgage loans with or without call or prepayment penalties. For purposes of the maturity table, mortgage-backed securities have been included in maturity groupings based on the contractual maturity. Amortized Cost Fair Value (Dollars in thousands) Available-for-sale: Due within one year $ 233 $ 237 Due after one through five years 19,031 20,074 Due after five through ten years 39,581 39,997 Due after ten years 324,600 333,013 Total debt securities 383,445 393,321 Equity securities 11,563 11,273 $ 395,008 $ 404,594 Held-to-maturity: Due within one year $ 1,546 $ 1,572 Due after one year through five years 25,706 25,698 Due after five through ten years 18,132 18,213 Due after ten years 195,754 199,648 $ 241,138 $ 245,131 At September 30, 2015 and December 31, 2014, investment securities with an estimated fair value of approximately $348.5 million and $269.2 million , respectively, were pledged to secure public deposits and for other purposes required or permitted by law. The following table presents a summary of realized gains and losses from the sale of investment securities: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Proceeds from sales $ 99,626 $ 15,140 $ 119,503 $ 49,297 Gross realized gains on sales $ 812 $ 137 $ 894 $ 474 Gross realized losses on sales (18 ) (83 ) (55 ) (985 ) Total realized gains (losses), net $ 794 $ 54 $ 839 $ (511 ) During the nine months ended September 30, 2014, the Company made two sales of investment securities classified as held-to-maturity. The Company sold $3.3 million of state and municipal debt obligations that were downgraded by Moody's as a result of allegations of fraud and multiple pending investigations of the issuer. As a result of the downgrade of the securities, the Company's intent to hold these securities changed and management elected to divest of its interest in the downgraded securities. The Company recorded a realized gain of $0.2 million on this sale. The Company also sold $5.2 million of corporate debt securities due to regulatory capital restrictions. The Company recorded a realized loss of $0.1 million on this sale. As the Company's intent and ability to hold the remaining held-to-maturity securities was not impacted by these sales, the Company did not reclassify the remaining securities to the available-for-sale category. The following tables detail gross unrealized losses and fair values of investment securities aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position: Less Than 12 Months 12 Months or More Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2015 (Dollars in thousands) Available-for-sale: State and municipals 3 $ 7,622 $ 27 1 $ 1,054 $ 14 $ 8,676 $ 41 Corporate debt securities 3 13,974 111 1 2,975 25 16,949 136 Asset-backed debt securities 17 61,056 870 1 4,457 334 65,513 1,204 Equity securities 1 5,350 67 1 549 430 5,899 497 Mortgage-backed securities 5 6,147 30 2 2,299 38 8,446 68 29 $ 94,149 $ 1,105 6 $ 11,334 $ 841 $ 105,483 $ 1,946 Held-to-maturity: State and municipals 41 $ 49,090 $ 393 11 $ 9,690 $ 215 $ 58,780 $ 608 Corporate debt securities — — — 1 3,040 960 3,040 960 41 49,090 393 12 12,730 1,175 61,820 1,568 Less Than 12 Months 12 Months or More Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2014 (Dollars in thousands) Available-for-sale: State and municipals — $ — $ — 11 $ 24,083 $ 227 24,083 $ 227 Corporate debt securities 3 10,134 172 1 2,975 25 13,109 197 Asset-backed debt securities — — — 1 4,566 198 4,566 198 Equity securities 1 1,850 18 1 676 303 2,526 321 Mortgage-backed securities 1 4,703 11 4 4,476 49 9,179 60 5 $ 16,687 $ 201 18 $ 36,776 $ 802 $ 53,463 $ 1,003 Held-to-maturity: State and municipals 2 $ 2,148 $ 25 36 $ 42,297 $ 364 $ 44,445 $ 389 Corporate debt securities — — — 1 2,980 1,020 2,980 1,020 2 $ 2,148 $ 25 37 $ 45,277 $ 1,384 $ 47,425 $ 1,409 All state and municipal securities in an unrealized loss position were rated as investment grade at September 30, 2015. The Company continually assesses the risk of credit default for the municipal bond portfolio and believes the portfolio has a low risk of credit default. The corporate debt securities are issued by well-capitalized and sound financial institutions. The asset-backed debt securities are rated at least Aa2 by Moody’s and the majority of these securities have been in an unrealized loss position for less than 12 months. The gross unrealized losses reported for the mortgage-backed securities relate to investment securities issued or guaranteed by the Federal National Mortgage Association, the Government National Mortgage Association, or the Federal Home Loan Mortgage Corporation. The Company does not intend to sell, and it is not more likely than not that the Company will be required to sell, these investment securities before the anticipated recovery of the amortized cost basis. The unrealized losses for the debt securities are caused by changes in market interest rates, as opposed to credit concerns related to the respective issuers. The equity securities held by the Company in an unrealized loss position at September 30, 2015 consist of publicly-traded common stock of an investment company, as well as preferred stock of a well-capitalized and sound financial institution. The Company concluded there are no concerns about the long-term viability of the issuers. The Company has the positive intent and ability to hold these securities until the anticipated recovery of value occurs. Based on this analysis, the Company does not consider any investment securities to be other-than-temporarily impaired at September 30, 2015.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Loans and Allowance for Loan Losses	LOANS AND ALLOWANCE FOR LOAN LOSSES Major categories of loans are presented below: September 30, 2015 December 31, 2014 Originated Acquired (1) Total Originated Acquired (1) Total (Dollars in thousands) Commercial real estate $ 1,510,589 $ 622,130 $ 2,132,719 $ 1,181,492 $ 403,672 $ 1,585,164 Commercial construction 277,251 63,698 340,949 265,968 48,668 314,636 Commercial and industrial 235,879 104,332 340,211 154,132 38,200 192,332 Leases 25,593 — 25,593 21,100 — 21,100 Total commercial 2,049,312 790,160 2,839,472 1,622,692 490,540 2,113,232 Residential construction 57,349 34,213 91,562 43,298 29,854 73,152 Residential mortgage 468,141 560,835 1,028,976 439,600 432,818 872,418 Consumer and other 12,770 5,853 18,623 10,851 5,445 16,296 Total portfolio loans $ 2,587,572 $ 1,391,061 $ 3,978,633 $ 2,116,441 $ 958,657 $ 3,075,098 (1) Amount includes $45.5 million and $137.5 million of acquired loans covered under FDIC loss-share agreements at September 30, 2015 and December 31, 2014, respectively. The unpaid principal balance for acquired loans covered under FDIC loss-share agreements was $46.0 million and $140.4 million at September 30, 2015 and December 31, 2014, respectively. On July 1, 2015, the Company’s loss-share agreement related to the non-single family residential mortgage loans acquired from Beach First National Bank (“Beach First”) expired. Accordingly, the Company will bear all future losses on this portfolio of loans. Immediately prior to the expiration of the loss-sharing arrangement, the loans in this portfolio had a carrying value of $74.4 million . A portion of the fair value discount on acquired covered loans has an accretable yield associated with those loans that is accreted into interest income over the estimated remaining life of the loans. The remaining non-accretable difference represents cash flows not expected to be collected. The following table details changes in the carrying amount of covered acquired loans and accretable yield for loans receivable for the nine months ended September 30, 2015 and the year ended December 31, 2014: 2015 2014 Accretable Yield Carrying Value Accretable Yield Carrying Value (Dollars in thousands) Balance at beginning of period $ (2,213 ) $ 137,459 $ (6,058 ) $ 187,661 Reduction from payments and foreclosures, net — (19,337 ) — (54,489 ) Reduction from expiration of loss-share coverage 480 (74,400 ) — — Reclass from non-accretable to accretable yield (113 ) 113 (221 ) 221 Accretion 1,662 1,662 4,066 4,066 Balance at end of period $ (184 ) $ 45,497 $ (2,213 ) $ 137,459 The Company evaluates loans acquired with evidence of credit deterioration in accordance with the provisions of ASC Topic 310-30: Loans and Debt Securities Acquired with Deteriorated Credit Quality ("ASC 310-30"). Credit-impaired loans are those loans showing evidence of credit deterioration since origination and it is probable, at the date of acquisition, the Company will not collect all contractually required principal and interest payments. Generally, the acquired loans that meet the Company’s definition for substandard status fall within the definition of credit-impaired covered loans. The following table presents loans acquired during the nine months ended September 30, 2015, at acquisition date, accounted for under ASC 310-30: Contractually required payments receivable $ 35,772 Contractual cash flows not expected to be collected (non-accretable) (6,368 ) Expected cash flows 29,404 Interest component of expected cash flows (480 ) Fair value of loans acquired $ 28,924 The acquisition date unpaid balance of loans acquired during the nine months ended September 30, 2015 that did not have credit deterioration was $588.4 million with an estimated fair value of $575.7 million . The discount will be amortized on a level-yield basis over the economic life of the loans. The Company has the ability to borrow funds from the Federal Home Loan Bank (“FHLB”) and from the Federal Reserve Bank. At September 30, 2015 and December 31, 2014, real estate loans with carrying values of $1.51 billion and $1.10 billion , respectively, were pledged to secure borrowing facilities from these institutions. A summary of the changes to the allowance for loan losses, by class of financing receivable, is presented below: For the three months ended September 30, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance June 30, 2015 $ 12,940 $ 5,547 $ 3,255 $ 92 $ 463 $ 8,138 $ 200 $ 30,635 Charge-offs (593 ) — (42 ) — — (536 ) (36 ) (1,207 ) Recoveries 403 113 689 — 5 313 10 1,533 Provision (1) 271 (842 ) 78 (4 ) 57 581 57 198 Change in FDIC indemnification asset (1) 1 157 (100 ) — — (386 ) 2 (326 ) Balance September 30, 2015 $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 For the three months ended September 30, 2014 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance June 30, 2014 $ 12,087 $ 5,184 $ 3,331 $ 54 $ 160 $ 9,036 $ 277 $ 30,129 Charge-offs (878 ) (324 ) (379 ) — — (1,267 ) (18 ) (2,866 ) Recoveries 680 377 383 — 3 1,002 96 2,541 Provision (2) 2,299 760 (509 ) (28 ) 334 (1,391 ) (161 ) 1,304 Change in FDIC indemnification asset (2) 35 (265 ) (150 ) — — (1 ) (5 ) (386 ) Balance September 30, 2014 $ 14,223 $ 5,732 $ 2,676 $ 26 $ 497 $ 7,379 $ 189 $ 30,722 For the nine months ended September 30, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance December 31, 2014 $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Charge-offs (2,153 ) (80 ) (151 ) — — (1,223 ) (302 ) (3,909 ) Recoveries 955 1,606 1,175 — 39 782 130 4,687 Provision (1) 1,616 (578 ) (200 ) (15 ) (87 ) (331 ) 204 609 Change in FDIC indemnification asset (1) (81 ) (284 ) (170 ) — 3 (431 ) 10 (953 ) Balance September 30, 2015 $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 For the nine months ended September 30, 2014 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance December 31, 2013 $ 14,752 $ 6,738 $ 3,137 $ 56 $ 213 $ 7,730 $ 249 $ 32,875 Charge-offs (2,956 ) (3,468 ) (2,128 ) — — (3,705 ) (182 ) (12,439 ) Recoveries 1,190 1,693 805 — 16 1,650 118 5,472 Provision (2) 1,401 1,457 1,081 (30 ) 274 1,847 (25 ) 6,005 Change in FDIC indemnification asset (2) (164 ) (688 ) (219 ) — (6 ) (143 ) 29 (1,191 ) Balance September 30, 2014 $ 14,223 $ 5,732 $ 2,676 $ 26 $ 497 $ 7,379 $ 189 $ 30,722 (1) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $0.1 million and $(0.1) million for the three and nine months ended September 30, 2015 , respectively. This resulted in a decrease in the FDIC indemnification asset of $0.3 million and $1.0 million , which is the difference between the net provision on covered loans and the total reduction to the allowance for loan losses allocable to the covered loan portfolio of $(0.5) million and $(1.3) million for the three and nine months ended September 30, 2015 , respectively. (2) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.1) million and $(0.3) million for the three and nine months ended September 30, 2014 , respectively. This resulted in a decrease in the FDIC indemnification asset of $0.4 million and $1.2 million , which is the difference between the net provision on covered loans and the total additions to the allowance for loan losses allocable to the covered loan portfolio of $(0.5) million and $(1.5) million for the three and nine months ended September 30, 2014 , respectively. The following table provides a breakdown of the recorded investment in loans and the allowance for loan losses based on the method of determining the allowance: Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balances at September 30, 2015: Specific reserves: Impaired loans $ 1,817 $ 165 $ 617 $ — $ 53 $ 1,637 $ 1 $ 4,290 Purchase credit impaired loans 1,327 406 59 — 16 1,208 4 3,020 Total specific reserves 3,144 571 676 — 69 2,845 5 7,310 General reserves 9,878 4,404 3,204 88 456 5,265 228 23,523 Total $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 Loans: Individually evaluated for impairment $ 25,528 $ 3,480 $ 1,642 $ — $ 478 $ 15,995 $ 10 $ 47,133 Purchase credit impaired loans 92,669 15,728 3,080 — 1,252 44,393 219 157,341 Loans collectively evaluated for impairment 2,014,522 321,741 335,489 25,593 89,832 968,588 18,394 3,774,159 Total $ 2,132,719 $ 340,949 $ 340,211 $ 25,593 $ 91,562 $ 1,028,976 $ 18,623 $ 3,978,633 Balances at December 31, 2014: Specific reserves: Impaired loans $ 1,614 $ 118 $ 42 $ — $ 230 $ 972 $ 13 $ 2,989 Purchase credit impaired loans 1,727 424 152 — — 1,556 11 3,870 Total specific reserves 3,341 542 194 — 230 2,528 24 6,859 General reserves 9,344 3,769 3,032 103 340 6,785 167 23,540 Total $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Loans: Individually evaluated for impairment $ 27,578 $ 4,080 $ 1,264 $ — $ 657 $ 13,019 $ 126 $ 46,724 Purchase credit impaired loans 82,477 11,326 4,591 — 952 50,164 872 150,382 Loans collectively evaluated for impairment 1,475,109 299,230 186,477 21,100 71,543 809,235 15,298 2,877,992 Total $ 1,585,164 $ 314,636 $ 192,332 $ 21,100 $ 73,152 $ 872,418 $ 16,296 $ 3,075,098 The following tables present information related to impaired loans, excluding purchased impaired loans: Impaired Loans - With Allowance Impaired Loans - With No Allowance Recorded Investment Unpaid Principal Balance Allowances for Loan Losses Allocated Recorded Investment Unpaid Principal Balance September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 10,477 $ 10,446 $ 1,737 $ 14,136 $ 14,099 Commercial construction 1,595 1,591 142 1,714 1,707 Commercial and industrial 1,425 1,417 572 — — Residential construction 345 344 41 — — Residential mortgage 7,504 7,480 819 3,278 3,266 Consumer and other 10 10 1 — — Total originated 21,356 21,288 3,312 19,128 19,072 Acquired: Commercial real estate 660 673 80 1,103 1,125 Commercial construction 182 181 23 181 181 Commercial and industrial 223 227 45 — 27 Residential construction 111 111 12 24 588 Residential mortgage 4,214 4,627 819 4,877 5,029 Total acquired 5,390 5,819 979 6,185 6,950 Total impaired loans $ 26,746 $ 27,107 $ 4,291 $ 25,313 $ 26,022 Impaired Loans - With Allowance Impaired Loans - With No Allowance Recorded Investment Unpaid Principal Balance Allowances for Loan Losses Allocated Recorded Investment Unpaid Principal Balance December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 10,110 $ 10,089 $ 1,571 $ 17,095 $ 17,071 Commercial construction 1,734 1,728 105 2,227 2,218 Commercial and industrial 798 790 26 268 271 Residential construction 350 349 44 — — Residential mortgage 6,278 6,260 694 5,057 5,045 Consumer and other 127 126 13 — — Total originated 19,397 19,342 2,453 24,647 24,605 Acquired: Commercial real estate 429 428 43 796 824 Commercial construction 133 132 13 469 467 Commercial and industrial 204 203 16 1 28 Residential construction 308 308 185 114 114 Residential mortgage 1,574 1,614 279 7,266 7,744 Total acquired 2,648 2,685 536 8,646 9,177 Total impaired loans $ 22,045 $ 22,027 $ 2,989 $ 33,293 $ 33,782 The following table presents information related to the average recorded investment and interest income recognized on impaired loans, excluding purchased impaired loans: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income (Dollars in thousands) Impaired loans with allowance: Commercial real estate $ 11,238 $ 109 $ 13,364 $ 121 $ 12,120 $ 302 $ 27,158 $ 311 Commercial construction 1,620 15 1,411 12 1,638 53 5,905 72 Commercial and industrial 1,487 17 941 5 1,456 46 603 10 Residential construction 382 4 352 3 378 11 433 4 Residential mortgage 7,318 46 6,902 32 7,329 105 11,299 129 Consumer and other 10 — 179 3 42 1 21 — Total impaired loans with allowance $ 22,055 $ 191 $ 23,149 $ 176 $ 22,963 $ 518 $ 45,419 $ 526 Impaired loans with no allowance: Commercial real estate $ 17,621 $ 147 $ 13,901 $ 143 $ 19,766 $ 386 $ 9,146 $ 149 Commercial construction 2,001 14 7,145 41 2,406 44 6,667 166 Commercial and industrial 281 1 21 — 316 1 481 6 Residential construction 82 — — — 101 — — — Residential mortgage 12,646 43 11,985 73 12,588 89 11,389 164 Consumer and other — — 12 — 81 — 41 — Total impaired loans with no allowance $ 32,631 $ 205 $ 33,064 $ 257 $ 35,258 $ 520 $ 27,724 $ 485 For the three and nine months ended September 30, 2015 and 2014 , the amount of interest income recognized within the period that the loans were impaired was primarily related to loans modified in a troubled debt restructuring (“TDR”) that remained on accrual status. The amount of interest income recognized using a cash-basis method of accounting during the period that the loans were impaired was not material. At September 30, 2015 and December 31, 2014, the Company had $1.6 million and $2.5 million , respectively, of consumer mortgage loans secured by residential real estate properties for which foreclosure proceedings were in progress. The following tables present an aging analysis of the recorded investment in the Company's loans: 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Past Due Current Total Loans September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 743 $ 741 $ — $ 1,984 $ 3,468 $ 1,507,121 $ 1,510,589 Commercial construction — 83 — 594 677 276,574 277,251 Commercial and industrial 372 129 — 169 670 235,209 235,879 Leases — — — — — 25,593 25,593 Residential construction — — — — — 57,349 57,349 Residential mortgage 1,067 310 — 3,167 4,544 463,597 468,141 Consumer and other 52 — — — 52 12,718 12,770 Total originated 2,234 1,263 — 5,914 9,411 2,578,161 2,587,572 Acquired: Commercial real estate — 658 — 4,847 5,505 616,625 622,130 Commercial construction 41 — — 443 484 63,214 63,698 Commercial and industrial 57 314 — 120 491 103,841 104,332 Residential construction — 52 — 134 186 34,027 34,213 Residential mortgage 588 348 — 8,749 9,685 551,150 560,835 Consumer and other 23 12 — 29 64 5,789 5,853 Total acquired 709 1,384 — 14,322 16,415 1,374,646 1,391,061 Total loans $ 2,943 $ 2,647 $ — $ 20,236 $ 25,826 $ 3,952,807 $ 3,978,633 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Past Due Current Total Loans December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 1,974 $ — $ — $ 3,476 $ 5,450 $ 1,176,042 $ 1,181,492 Commercial construction 12 — — 1,084 1,096 264,872 265,968 Commercial and industrial 102 24 — 417 543 153,589 154,132 Leases — — — — — 21,100 21,100 Residential construction 200 — — — 200 43,098 43,298 Residential mortgage 1,508 1,268 — 3,498 6,274 433,326 439,600 Consumer and other 6 — — — 6 10,845 10,851 Total originated 3,802 1,292 — 8,475 13,569 2,102,872 2,116,441 Acquired: Commercial real estate 880 155 — 4,508 5,543 398,129 403,672 Commercial construction 230 67 — 779 1,076 47,592 48,668 Commercial and industrial 121 27 — 197 345 37,855 38,200 Residential construction — — — 422 422 29,432 29,854 Residential mortgage 2,200 848 — 10,312 13,360 419,458 432,818 Consumer and other 92 2 — 30 124 5,321 5,445 Total acquired 3,523 1,099 — 16,248 20,870 937,787 958,657 Total loans $ 7,325 $ 2,391 $ — $ 24,723 $ 34,439 $ 3,040,659 $ 3,075,098 Credit Quality Indicators The Company uses several credit quality indicators to manage credit risk in an ongoing manner. The Company's primary credit quality indicators use an internal credit risk rating system that categorizes loans and leases into pass, special mention, or classified categories. Credit risk ratings are applied individually to those classes of loans and leases that have significant or unique credit characteristics that benefit from a case-by-case evaluation. These are typically loans and leases to businesses or individuals in the classes which comprise the commercial portfolio segment. Groups of loans and leases that are underwritten and structured using standardized criteria and characteristics are typically risk rated and monitored collectively. These are typically loans and leases to individuals in the classes which comprise the consumer portfolio segment. The Company uses the following definitions for risk ratings: Pass - Loans classified as pass are considered to be a satisfactory credit risk and generally considered to be collectible in full. 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 payment 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. Loss - Loans classified as loss are considered uncollectable and are in the process of being charged-off, as soon as practicable, once so classified. The following tables present the recorded investment in the Company’s loans by credit quality indicator: Pass Special Mention Substandard Doubtful Loss Total September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,440,104 $ 42,584 $ 27,901 $ — $ — $ 1,510,589 Commercial construction 264,222 6,356 6,673 — — 277,251 Commercial and industrial 225,869 5,578 4,432 — — 235,879 Leases 25,593 — — — — 25,593 Residential construction 56,981 24 344 — — 57,349 Residential mortgage 436,247 21,059 10,835 — — 468,141 Consumer and other 12,177 583 10 — — 12,770 Total originated 2,461,193 76,184 50,195 — — 2,587,572 Acquired: Commercial real estate 542,028 33,484 46,618 — — 622,130 Commercial construction 46,501 5,520 11,541 136 — 63,698 Commercial and industrial 94,400 429 9,503 — — 104,332 Residential construction 31,643 1,065 1,505 — — 34,213 Residential mortgage 499,997 37,466 22,580 792 — 560,835 Consumer and other 5,693 131 28 1 — 5,853 Total acquired 1,220,262 78,095 91,775 929 — 1,391,061 Total loans $ 3,681,455 $ 154,279 $ 141,970 $ 929 $ — $ 3,978,633 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 1,100,361 $ 46,935 $ 34,196 $ — $ — $ 1,181,492 Commercial construction 256,987 5,530 3,451 — — 265,968 Commercial and industrial 145,722 3,980 4,430 — — 154,132 Leases 21,100 — — — — 21,100 Residential construction 42,806 143 349 — — 43,298 Residential mortgage 407,319 20,946 11,335 — — 439,600 Consumer and other 10,331 428 92 — — 10,851 Total originated 1,984,626 77,962 53,853 — — 2,116,441 Acquired: Commercial real estate 342,240 35,816 25,531 85 — 403,672 Commercial construction 36,346 5,910 6,320 92 — 48,668 Commercial and industrial 36,039 644 1,482 35 — 38,200 Residential construction 28,833 — 1,021 — — 29,854 Residential mortgage 370,523 36,098 24,616 1,581 — 432,818 Consumer and other 5,256 159 30 — — 5,445 Total acquired 819,237 78,627 59,000 1,793 — 958,657 Total loans $ 2,803,863 $ 156,589 $ 112,853 $ 1,793 $ — $ 3,075,098 Modifications Loan modifications are considered troubled debt restructurings ("TDR") if concessions have been granted to borrowers that are experiencing financial difficulty. The concessions granted generally involve the modification of terms of the loan, such as changes in payment schedule or interest rate, which generally would not otherwise be considered. Restructured loans can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. Nonaccrual restructured loans are included and treated with all other nonaccrual loans. In addition, all accruing restructured loans are reported as troubled debt restructurings, which are considered and accounted for as impaired loans. Generally, restructured loans remain on nonaccrual until the customer has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status. Loans modified in a TDR are, in many cases, already on nonaccrual status and partial charge-offs have in some cases already been taken against the outstanding loan balance. As a result, loans modified in a TDR for the Company may have the financial effect of increasing the specific allowance associated with the loan. An allowance for impaired consumer and commercial loans that have been modified in a TDR is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the estimated fair value of the collateral, less any selling costs, if the loan is collateral dependent. Management exercises significant judgment in developing these estimates. Once we classify a loan as a TDR, the loan is only removed from TDR classification under three circumstances: (1) the loan is paid off, (2) the loan is charged off or (3) if, at the beginning of the current fiscal year, the loan has performed in accordance with the modified terms for a minimum of six consecutive months and at the time of modification the loan’s interest rate represented a then current market interest rate for a loan of similar risk. The following tables provide a summary of loans modified as TDRs: Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated September 30, 2015 (Dollars in thousands) Commercial real estate $ 6,724 $ — $ 6,724 $ 238 Commercial construction 894 48 942 15 Commercial and industrial 1,219 — 1,219 510 Residential mortgage 6,715 14 6,729 424 Consumer and other 10 — 10 1 Total modifications $ 15,562 $ 62 $ 15,624 $ 1,188 Number of contracts 36 2 38 Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated December 31, 2014 (Dollars in thousands) Commercial real estate $ 3,835 $ — $ 3,835 $ 165 Commercial construction 1,341 50 1,391 16 Commercial and industrial 651 — 651 25 Residential mortgage 7,625 16 7,641 592 Consumer and other 126 — 126 13 Total modifications $ 13,578 $ 66 $ 13,644 $ 811 Number of contracts 33 2 35 At September 30, 2015 and December 31, 2014, the Company had no available commitments outstanding on TDRs. The Company offers a variety of modifications to borrowers. The modification categories offered can generally be described in the following categories: Rate modification - A modification in which the interest rate is changed. Term modification - A modification in which the maturity date, timing of payments or frequency of payments is changed. Interest only modification – A modification in which the loan is converted to interest only payments for a period of time. Payment modification – A modification in which the principal and interest payment are lowered from the original contractual terms. Combination modification – Any other type of modification, including the use of multiple categories above. The following tables present new TDRs by modification category. All balances represent the recorded investment at the end of the period in which the modification was made. Three Months Ended September 30, 2015 Nine Months Ended September 30, 2015 Term Total Term Payment Interest Only Combination Total (Dollars in thousands) Commercial real estate $ 1,403 $ 1,403 $ 1,820 $ — $ 358 $ 863 $ 3,041 Commercial and industrial — — 93 419 231 — 743 Residential mortgage 149 149 149 — — — 149 Total modifications $ 1,552 $ 1,552 $ 2,062 $ 419 $ 589 $ 863 $ 3,933 Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Term Payment Combination Total Term Interest Only Payment Combination Total (Dollars in thousands) Commercial real estate $ — $ — $ — $ — $ — $ — $ 1,338 $ — $ 1,338 Commercial and industrial — — 158 158 — — — 158 158 Residential construction — — — — — 479 — — 479 Residential mortgage 755 — — 755 755 — — — 755 Consumer and other — 11 — 11 — — 11 — 11 Total modifications $ 755 $ 11 $ 158 $ 924 $ 755 $ 479 $ 1,349 $ 158 $ 2,741 The following tables summarize the period-end balance for loans modified and classified as TDRs in the previous 12 months for which a payment default has occurred. The Company defines payment default as movement of the restructuring to nonaccrual status, foreclosure or charge-off, whichever occurs first. No TDRs defaulted during the three months ended September 30, 2015 and 2014, respectively. Nine Months Ended September 30, 2015 2014 (dollars in thousands) Commercial real estate $ — $ 1,210 Commercial construction — 1,245 Residential mortgage — 129 Consumer and other 34 — Loans held for sale The Company originates certain single family, residential first mortgage loans for sale on a presold basis. Loan sale activity is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Loans held for sale $ 37,437 $ 20,906 $ 37,437 $ 20,906 Proceeds from sales of loans held for sale 105,373 76,206 281,344 212,809 Mortgage fees 3,031 2,128 8,307 5,640

FDIC Indemnification Asset

FDIC Indemnification Asset	9 Months Ended
	Sep. 30, 2015
FDIC Indemnification Asset [Abstract]
FDIC Indemnification Asset	FDIC INDEMNIFICATION ASSET The Company has recorded an indemnification asset related to loss-share 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 losses and workout expenses on these assets which occur prior to the expiration of the loss-sharing agreements. The Company entered into the respective loss-share agreements with the acquisitions of Beach First on April 9, 2010 and Blue Ridge Savings Bank on October 14, 2011. Each loss-sharing arrangement consists of one single family residential mortgage loan agreement and one non-single family residential loan agreement. The non-single family residential loan loss-share agreements provide for FDIC loss-sharing to the end of the fiscal quarter five years from the purchase date and reimbursement to the FDIC to the end of the fiscal quarter eight years from the purchase date. The single family residential mortgage loan loss-share agreements provide for FDIC loss-sharing and reimbursement for recoveries to the FDIC to the end of the fiscal quarter ten years from the purchase date. On July 1, 2015, the Company’s loss-share agreement related to the non-single family residential mortgage loans of Beach First expired. Accordingly, the Company will bear all future losses on this portfolio of loans and foreclosed real estate. Immediately prior to the expiration of the loss-sharing arrangement, the loans in this portfolio had a carrying value of $74.4 million and the foreclosed real estate in this portfolio had a carrying value of $0.5 million . The following table presents activity for the FDIC indemnification asset for the nine months ended September 30, 2015 and the year ended December 31, 2014: 2015 2014 (Dollars in thousands) Balance at beginning of period $ 5,097 $ 16,886 Accretion of present value discount, net 173 1,061 Post-acquisition adjustments 1,568 (2,920 ) Receipt of payments from FDIC (4,758 ) (9,930 ) Balance at end of period $ 2,080 $ 5,097 The FDIC indemnification asset is measured separately from the related covered assets and is initially recorded at fair value. The fair value was estimated using projected cash flows related to the loss-share agreements based on the expected reimbursements for losses and the applicable loss-share percentages. Cash flow projections are reviewed and updated prospectively as loss estimates related to both covered loans and covered other real estate owned ("OREO") change.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	DERIVATIVES The Company utilizes derivative financial instruments primarily to hedge its exposure to changes in interest rates. All derivative financial instruments are recorded on the balance sheet at their respective fair values. The Company does not use financial instruments or derivatives for any trading or other speculative purposes. The primary focus of the Company’s asset/liability management program is to monitor the sensitivity of the Company’s net portfolio value and net income under varying interest rate scenarios to take steps to control its risks. On a quarterly basis, the Company simulates the net portfolio value and net income expected to be earned over a twelve-month period following the date of simulation. The simulation is based on a projection of market interest rates at varying levels and estimates the impact of such market rates on the levels of interest-earning assets and interest-bearing liabilities during the measurement period. Based upon the outcome of the simulation analysis, the Company considers the use of derivatives as a means of reducing the volatility of net portfolio value and projected net income within certain ranges of projected changes in interest rates. The Company evaluates the effectiveness of entering into any derivative instrument agreement by measuring the cost of such an agreement in relation to the reduction in net portfolio value and net income volatility within an assumed range of interest rates. The Company also has derivatives that are a result of a service it provides to certain qualifying customers, which includes a matched book of derivative instruments offered to customers in order to minimize their interest rate risk. Derivatives Designated as Cash Flow Hedges of Interest Rate Risk The Company has variable rate funding which creates exposure to variability in interest payments due to changes in interest rates. The Company entered into an interest rate swap transaction with a notional amount of $125 million . The interest rate swap was designated as a hedge against the changes in cash flows attributable to changes in one-month LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on the first $125 million of the Company's variable rate money market funding arrangement. The Company receives interest at the one-month LIBOR rate and pays a fixed interest rate under the terms of the swap agreement. The termination date of the swap agreement is March 18, 2019 . Derivatives Not Designated as Hedges The Company utilizes derivative financial instruments, which may include interest rate swaps, caps and/or floors, as part of its ongoing efforts to mitigate its interest rate risk exposure and to help its commercial customers manage their exposure to interest rate fluctuations. To mitigate the interest rate risk associated with these customer contracts, the Company enters into an offsetting derivative contract position. These derivative positions are recorded at fair value on the Company’s consolidated balance sheet and, due to the matched nature of these derivative instruments, changes in fair value do not impact the Company’s earnings. At September 30, 2015 and December 31, 2014 , the Company had notional amounts of $58.1 million and $34.7 million , respectively, on interest rate contracts with corporate customers and in offsetting interest rate contracts with another financial institution to mitigate the Company’s rate exposure on its corporate customers’ contracts. The following table presents the fair value of the Company’s derivatives: September 30, 2015 December 31, 2014 Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value (Dollars in thousands) Derivative assets: Derivatives not designated as hedging instruments: Interest rate swaps $ 58,074 Other assets $ 1,829 $ 34,692 Other assets $ 723 Derivative liabilities: Derivatives designated as hedging instruments: Interest rate swap $ 125,000 Accrued expenses and other liabilities $ 2,442 $ 125,000 Accrued expenses and other liabilities $ 308 Derivatives not designated as hedging instruments: Interest rate swaps $ 58,074 Accrued expenses and other liabilities $ 1,829 $ 34,692 Accrued expenses and other liabilities $ 723 The derivative instruments held by the Company are subject to master netting arrangements which contain a legally enforceable right to offset recognized amounts and settle such amounts on a net basis. The Company has elected to present the financial assets and financial liabilities associated with these arrangements on a gross basis in the Consolidated Balance Sheets. Cash collateral is posted by the counterparty with net liability positions in accordance with contract thresholds. Information about financial instruments that are eligible for offset in the consolidated balance sheets is presented in the following table: Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amount Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Collateral Held/Pledged Net (Dollars in thousands) September 30, 2015 Derivative assets $ 1,829 $ — $ 1,829 $ — $ — $ 1,829 Derivative liabilities 4,271 — 4,271 — 4,271 — Total derivative instruments $ 6,100 $ — $ 6,100 $ — $ 4,271 $ 1,829 December 31, 2014 Derivative assets $ 723 $ — $ 723 $ — $ — $ 723 Derivative liabilities 1,031 — 1,031 — 1,031 — Total derivative instruments $ 1,754 $ — $ 1,754 $ — $ 1,031 $ 723 The Company has recorded a net loss of $1.5 million , net of tax, as component of accumulated other comprehensive income at September 30, 2015 associated with cash flow hedging instruments and expects $1.4 million , net of tax, to be reclassified as an increase to interest expense during the next 12 months. The following table presents the amounts recorded in the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income, respectively, relating to derivative instruments designated as cash flow hedges, net of tax: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Amount of net gains (losses) recorded in OCI (effective portion) $ (876 ) $ 305 $ (1,344 ) $ (1,315 ) Amount of net losses reclassified from OCI to earnings (1) — — — 286 (1) Amount recorded in interest expense on demand deposits in the Consolidated Statements of Income. The amounts included in accumulated other comprehensive income will be reclassified to interest expense should the hedges no longer be considered effective. No amount of ineffectiveness was included in net income for the three and nine months ended September 30, 2015 and 2014 , respectively. The Company will continue to assess the effectiveness of the hedges on a quarterly basis. Counterparty Credit Risk – By entering into derivative instrument contracts, the Company exposes itself, from time to time, to counterparty credit risk. Counterparty credit risk is the failure of the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is in an asset position, the counterparty has a liability to the Company, which creates credit risk for the Company. The Company attempts to minimize this risk by selecting counterparties with investment grade credit ratings, limiting its exposure to any single counterparty and regularly monitoring its market position with each counterparty. Credit-Risk Related Contingent Features – The Company’s derivative instruments contain provisions allowing the financial institution counterparty to terminate the contracts in certain circumstances, such as a default by the Company on its indebtedness or the failure to maintain its regulatory status as a well-capitalized institution. These derivative agreements also contain provisions regarding the posting of collateral by each party. At September 30, 2015 , the aggregate fair value of derivative instruments with credit-risk-related contingent features that were in a net liability position was $4.3 million , for which the Company has posted collateral with a fair value of $6.3 million .

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Borrowings	BORROWINGS The following table presents the Company’s short-term borrowings: September 30, 2015 December 31, 2014 (Dollars in thousands) Repurchase agreements (1) $ 63,409 $ 25,834 Advances from FHLB 14,000 102,100 Total short-term borrowings $ 77,409 $ 127,934 (1) Securities sold under agreements to repurchase generally mature within one day from the transaction date and are collateralized by either U.S. Government Agency obligations, government sponsored mortgage-backed securities or securities issued by local governmental municipalities. The following table presents the Company’s long-term debt: September 30, 2015 December 31, 2014 (Dollars in thousands) Advances from FHLB $ 83,108 $ 52,000 Subordinated notes 71,896 60,000 Junior subordinated debentures 36,328 23,713 191,332 135,713 Less: Prepayment penalty on extinguishment of FHLB advances 1,671 1,899 Total long-term debt $ 189,661 $ 133,814 The following table details the Company's long-term FHLB advances outstanding: Maturity Interest Rate (1) September 30, 2015 December 31, 2014 (Dollars in thousands) July 2016 0.88% $ — $ 2,000 August 2016 1.72% — 2,000 January 2018 2.15% — 15,000 January 2018 2.27% — 10,000 March 2018 1.17% 10,000 — July 2018 3.53% 10,000 — July 2018 1.78% 3,000 3,000 September 2018 1.34% 20,000 — June 2019 3.70% 5,000 — June 2019 3.97% 13,000 — January 2020 0.53% 10,000 10,000 January 2020 0.53% 10,000 10,000 81,000 52,000 Unamortized premium 2,108 — $ 83,108 $ 52,000 (1) Interest rate on advances at September 30, 2015. The advances from the FHLB have been made against a $783.9 million line of credit secured by real estate loans and investment securities with carrying values of $1.08 billion and $6.5 million , respectively, at September 30, 2015. On July 1, 2015, in conjunction with the Valley acquisition, the Company acquired the Valley Trusts with outstanding subordinated debentures totaling $16.5 million . On the date of such acquisition, the Company recorded the assumed subordinated debentures owed to the Valley Trusts at estimated fair value of $12.6 million , based on an independent third party valuation, to reflect a current market interest rate for comparable obligations. The fair value adjustment of $3.9 million is being amortized, using a level-yield methodology over the estimated holding period of between approximately 18 and 22 years , as an increase in interest expense of the subordinated debentures owed to the Valley Trusts. In addition to the subordinated debentures of the Valley Trusts, the Company also acquired $0.5 million of trust common equity issued by the Valley Trusts. The trust preferred securities issued by Valley Trust I and the related subordinated debentures bear interest, adjustable quarterly, at 90-day London Interbank Offered Rates (“LIBOR”) plus 3.10% and contain a final maturity of June 26, 2033. The trust preferred securities issued by Valley Trust II and the related subordinated debentures bear interest, adjustable quarterly, at 90-day LIBOR plus 1.49% and contain a final maturity of December 15, 2035. The trust preferred securities issued by Valley Trust III and the related subordinated debentures bear interest, adjustable quarterly, at 90-day LIBOR plus 1.73% and contain a final maturity of January 30, 2037. In addition, the Company assumed a junior subordinated note in conjunction with the Valley acquisition with an outstanding balance of $10.8 million . The Company recorded the assumed subordinated note at an estimated fair value of $12.0 million , based on an independent third party valuation, to reflect a current market interest rate for comparable obligations. The fair value adjustment of $1.2 million is being amortized, using a level-yield methodology over the estimated holding period of approximately eight years , as a decrease in interest expense of the subordinated note. The junior subordinated note bears interest at a variable rate of LIBOR plus 5.00% per annum, with a floor of 5.50% and a cap of 9.50% , and has a maturity date of October 15, 2023. The interest rate for the subordinated note is 5.50% at September 30, 2015. The Company has entered into a 364 -day revolving credit facility (the “Credit Agreement”) for an aggregate principal amount of up to $15 million at any time outstanding. The Credit Agreement matures on November 13, 2015. There were no borrowings outstanding under the Credit Agreement at September 30, 2015. In addition, the Company has the ability to borrow funds from the Federal Reserve Bank of Richmond utilizing the discount window and the borrower-in-custody of collateral arrangement. At September 30, 2015 , commercial loans and investment securities with carrying values of $428.5 million and $2.8 million , respectively, were assigned under these arrangements. At September 30, 2015, the Company had approximately $244.5 million in borrowing capacity available under these arrangements with no outstanding balance due. The Company was not aware of any violations of loan covenants at September 30, 2015.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2015
Accumulated Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME The following table presents the changes in accumulated other comprehensive income, net of taxes: Three Months Ended September 30, 2015 and 2014 Unrealized Holding Gains (Losses) on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding Gains (Losses) on Cash Flow Hedging Activities Total Accumulated Other Comprehensive Income (Dollars in thousands) Balance at June 30, 2015 $ 5,968 $ 3,064 $ (664 ) $ 8,368 Other comprehensive income (loss) before reclassifications 572 — (876 ) (304 ) Reclassifications from accumulated other comprehensive income (501 ) (128 ) — (629 ) Net current period other comprehensive income (loss) 71 (128 ) (876 ) (933 ) Balance at September 30, 2015 $ 6,039 $ 2,936 (1,540 ) $ 7,435 Balance at June 30, 2014 $ 4,606 $ 3,499 $ 107 $ 8,212 Other comprehensive income before reclassifications 1,833 — 305 2,138 Reclassifications from accumulated other comprehensive income (34 ) (102 ) — (136 ) Net current period other comprehensive income (loss) 1,799 (102 ) 305 2,002 Balance at September 30, 2014 $ 6,405 $ 3,397 $ 412 $ 10,214 Nine Months Ended September 30, 2015 and 2014 Unrealized Holding Gains (Losses) on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding Gains (Losses) on Cash Flow Hedging Activities Total Accumulated Other Comprehensive Income (Dollars in thousands) Balance at December 31, 2014 $ 7,089 $ 3,289 $ (196 ) $ 10,182 Other comprehensive loss before reclassifications (521 ) — (1,344 ) (1,865 ) Reclassifications from accumulated other comprehensive income (529 ) (353 ) — (882 ) Net current period other comprehensive loss (1,050 ) (353 ) (1,344 ) (2,747 ) Balance at September 30, 2015 $ 6,039 $ 2,936 (1,540 ) $ 7,435 Balance at December 31, 2013 $ (1,946 ) $ 3,811 $ 1,441 $ 3,306 Other comprehensive income (loss) before reclassifications 8,029 — (1,315 ) 6,714 Reclassifications from accumulated other comprehensive income 322 (414 ) 286 194 Net current period other comprehensive income (loss) 8,351 (414 ) (1,029 ) 6,908 Balance at September 30, 2014 $ 6,405 $ 3,397 $ 412 $ 10,214 The following table details reclassification adjustments from accumulated other comprehensive income: Three Months Ended September 30, Component of Accumulated Other Comprehensive Income 2015 2014 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains (losses) on investment securities available-for-sale $ 794 $ 54 Gain (loss) on sale of investment securities, net (293 ) (20 ) Income tax expense 501 34 Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 204 161 Interest income - investment securities (76 ) (59 ) Income tax expense 128 102 Total, net of tax Total reclassifications for the period $ 629 $ 136 Nine Months Ended September 30, Component of Accumulated Other Comprehensive Income 2015 2014 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains (losses) on investment securities available-for-sale $ 839 $ (511 ) Gain (loss) on sale of investment securities, net (310 ) 189 Income tax expense 529 (322 ) Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 561 657 Interest income - investment securities (208 ) (243 ) Income tax expense 353 414 Total, net of tax Unrealized holding gains (losses) on cash flow hedging activities — (457 ) Interest expense - demand deposits — 171 Income tax expense — (286 ) Total, net of tax Total reclassifications for the period $ 882 $ (194 ) (1) The amortization of the unrealized holding gains in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer. Both components are amortized as an adjustment of yield.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENT ASC Topic 820 , Fair Value Measurements and Disclosures , establishes a framework for measuring fair value, establishes a three-level valuation hierarchy for disclosure of fair value measurement and enhances disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability at the measurement date. The three levels of valuations are defined as follows: Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement, and require significant management judgment or estimation using pricing models, discounted cash flow methodologies or similar techniques. Fair Value on a Recurring Basis – The Company measures certain assets at fair value on a recurring basis and the following is a general description of the methods used to value such assets. Investment securities available-for-sale – The fair value of a portion of our investment in equity securities available-for-sale is determined by observing quoted prices in an active market for identical securities. As such, the Company classifies these securities as Level 1 valuation. The fair value of the remainder of our investment securities available-for-sale are determined by a third-party pricing service. The valuations provided by the third-party pricing service are based on observable market inputs, which include benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers and reference data obtained from market research publications. The valuation of mortgage-backed securities also includes new issue data, monthly payment information and “To Be Announced” prices. The valuation of state and municipal securities also include the use of material event notices. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness. At least annually, we will validate prices supplied by the independent pricing service by comparing to prices obtained from a second third-party source. The Company classifies these investment securities as Level 2 valuation. Derivative assets and liabilities – The values of derivative instruments held or issued by the Company for risk management purposes are traded in over-the-counter markets where quoted market prices are not readily available. For those derivatives, the Company measures fair value using models that use primarily market observable inputs, such as yield curves and option volatilities, and include the value associated with counterparty credit risk. The Company classifies derivative instruments as Level 2 valuation. The following tables present information about certain assets and liabilities measured at fair value on a recurring basis: Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) September 30, 2015 Assets: Investment securities available-for-sale: U.S. Government agencies $ 12,372 $ — $ 12,372 $ — State and municipals 181,007 — 181,007 — Corporate debt securities 36,660 — 36,660 — Other debt securities 73,526 — 73,526 — Equity securities 11,273 549 10,724 — Mortgage-backed securities: Residential government sponsored 87,991 — 87,991 — Other government sponsored 1,765 — 1,765 — Total investment securities available-for-sale 404,594 549 404,045 — Derivative instruments: Interest rate swap - not designated 1,829 — 1,829 — Total derivative instruments 1,829 — 1,829 — Total assets measured at fair value on a recurring basis $ 406,423 $ 549 $ 405,874 $ — Liabilities: Interest rate swap - cash flow hedge $ 2,442 $ — $ 2,442 — Interest rate swap - not designated 1,829 — 1,829 — Total liabilities measured at fair value on a recurring basis $ 4,271 $ — $ 4,271 $ — Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) December 31, 2014 Assets: Investment securities available-for-sale: U.S. Government agencies $ 17,888 $ — $ 17,888 $ — State and municipals 188,935 — 188,935 — Corporate debt securities 13,615 — 13,615 — Other debt securities 12,566 — 12,566 — Equity securities 5,909 676 5,233 — Mortgage-backed securities: Residential government sponsored 28,274 — 28,274 — Other government sponsored 2,103 — 2,103 — Total investment securities available-for-sale 269,290 676 268,614 — Derivative instruments: Interest rate swap - not designated 723 — 723 — Total derivative instruments 723 — 723 — Total assets measured at fair value on a recurring basis $ 270,013 $ 676 $ 269,337 $ — Liabilities: Interest rate swap - cash flow hedge $ 308 $ — $ 308 $ — Interest rate swap - not designated 723 — 723 — Total liabilities measured at fair value on a recurring basis $ 1,031 $ — $ 1,031 $ — Fair Value on a Nonrecurring Basis – The Company measures certain assets at fair value on a nonrecurring basis and the following is a general description of the methods used to value such assets. Loans held for sale – Loans held for sale are carried at the lower of cost or market value. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, the Company classifies loans subjected to nonrecurring fair value adjustments as Level 2 valuation. Impaired loans – The Company considers a loan impaired when it is probable that the Company will be unable to collect all amounts due according to the original contractual terms of the note agreement, including both principal and interest. Management has determined that nonaccrual loans and loans that have had their terms restructured in a troubled debt restructuring meet this impaired loan definition. For individually evaluated impaired loans, the amount of impairment is based upon the present value of expected future cash flows discounted at the loan’s effective interest rate or the estimated fair value of the underlying collateral for collateral-dependent loans, which the Company classifies as a Level 3 valuation. Other real estate owned – Other real estate owned is initially recorded at the lower of carrying value or fair value. Fair value is based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral, which the Company classifies as a Level 3 valuation. The following tables present information about certain assets and liabilities measured at fair value on a nonrecurring basis: Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) September 30, 2015 Loans held for sale $ 37,437 $ — $ 37,437 $ — Impaired loans 197,164 — — 197,164 Other real estate owned 37,280 — — 37,280 Total assets measured at fair value on a nonrecurring basis $ 271,881 $ — $ 37,437 $ 234,444 December 31, 2014 Loans held for sale $ 37,280 $ — $ 37,280 $ — Impaired loans 190,247 — — 190,247 Other real estate owned 42,531 — — 42,531 Total assets measured at fair value on a nonrecurring basis $ 270,058 $ — $ 37,280 $ 232,778 The following table presents the valuation and unobservable inputs for Level 3 assets and liabilities measured at fair value on a nonrecurring basis at September 30, 2015: Description Fair Value (in thousands) Valuation Methodology Unobservable Inputs Range of Inputs Impaired loans $ 197,164 Appraised value Discount to reflect current market conditions and ultimate collectability 0% - 20% Other real estate owned $ 37,280 Appraised value Discount to reflect current market conditions 0% - 20% Estimated fair values of financial instruments have been estimated by the Company using the provisions of ASC Topic 825, Financial Instruments (“ASC 825”), which requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. ASC 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The following tables present the carrying value and estimated fair values of the Company’s financial instruments, including those that are not measured and reported at fair value on a recurring basis or nonrecurring basis: Carrying Value Fair Value Level 1 Level 2 Level 3 September 30, 2015 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 70,507 $ 70,507 $ 70,507 $ — $ — Investment securities available-for-sale 404,594 404,594 549 404,045 — Investment securities held-to-maturity 241,138 245,131 — 245,131 — Federal Home Loan Bank stock 8,511 8,511 — 8,511 — Loans held for sale 37,437 37,437 — 37,437 — Loans receivable, net 3,947,800 4,000,155 — 3,802,991 197,164 Accrued interest receivable 15,528 15,528 — 15,528 — FDIC indemnification asset 2,080 2,080 — — 2,080 Investment in bank-owned life insurance 115,914 115,914 — 115,914 — Interest rate swap derivative - not designated 1,829 1,829 — 1,829 — Financial liabilities: Demand deposits and savings $ 2,896,330 $ 2,896,330 $ — $ 2,896,330 $ — Time deposits 1,478,161 1,491,808 — 1,491,808 — Short-term borrowings 77,409 77,409 — 77,409 — Long-term debt 189,661 186,839 — 186,839 — Accrued interest payable 971 971 — 971 — Interest rate swap derivative - cash flow hedge 2,442 2,442 — 2,442 — Interest rate swap derivative - not designated 1,829 1,829 — 1,829 — Carrying Value Fair Value Level 1 Level 2 Level 3 December 31, 2014 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 85,194 $ 85,194 $ 85,194 $ — $ — Investment securities available-for-sale 269,290 269,290 676 268,614 — Investment securities held-to-maturity 237,092 241,997 — 241,997 — Federal Home Loan Bank stock 10,562 10,562 — 10,562 — Loans held for sale 37,280 37,280 — 37,280 — Loans receivable, net 3,044,699 3,070,477 — 2,880,230 190,247 Accrued interest receivable 14,514 14,514 — 14,514 — FDIC indemnification asset 5,097 5,097 — — 5,097 Investment in bank-owned life insurance 93,396 93,396 — 93,396 — Interest rate swap derivative - not designated 723 723 — 723 — Financial liabilities: Demand deposits and savings $ 2,192,723 $ 2,192,723 $ — $ 2,192,723 $ — Time deposits 1,203,674 1,218,869 — 1,218,869 — Short-term borrowings 127,934 127,934 — 127,934 — Long-term debt 133,814 131,417 — 131,417 — Accrued interest payable 2,011 2,011 — 2,011 — Interest rate swap derivative - cash flow hedge 308 308 — 308 — Interest rate swap derivative - not designated 723 723 — 723 — The following methods and assumptions were used to estimate the fair value of financial instruments that have not been previously discussed: Cash and cash equivalents - The carrying amounts reported in the balance sheets for cash and cash equivalents approximate the fair value of those assets. Investment securities held-to-maturity - The fair value of our investment securities held-to-maturity are determined by a third-party pricing service. The valuations provided by the third-party pricing service for state and municipal securities are based on observable market inputs, which include benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers and the use of material event notices. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness. At least annually, we will validate prices supplied by the independent pricing service by comparing to prices obtained from a second third-party source. Federal Home Loan Bank stock - The fair value for FHLB stock is its carrying value, since this is the amount for which it could be redeemed. There is no active market for this stock and the Company, in order to be a member of the FHLB, is required to maintain a minimum investment. Loans receivable, net - The fair values for loans are estimated using discounted cash flow analyses using interest rates currently being offered for loans with similar terms and credit ratings for the same remaining maturities, adjusted for the allowance for loan losses. FDIC indemnification asset - The fair value for the FDIC indemnification asset is estimated based on discounted future cash flows using current discount rates. Investment in bank-owned life insurance - The carrying value of life insurance approximates fair value because this investment is carried at cash surrender value, as determined by the insurer. Accrued interest receivable and accrued interest payable - The carrying amount of accrued interest is assumed to approximate fair value. Deposits - The fair values disclosed for deposits with no stated maturity (e.g., interest and non-interest checking, passbook savings, and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair values for deposits with a stated maturity date (time deposits) are estimated using a discounted cash flow calculation that applies interest rates currently being offered on these accounts to a schedule of aggregated expected monthly maturities on time deposits. Short-term borrowings - The carrying amount of short-term borrowings is assumed to approximate fair value. Long-term debt – The fair value is estimated by discounting the future contractual cash flows using current market interest rates for similar debt over the same remaining term.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitment and Contingencies	COMMITMENTS AND CONTINGENCIES The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, unfunded lines of credit, and standby letters of credit. These instruments involve elements of credit risk in excess of amounts recognized in the accompanying consolidated financial statements. The Company's risk of loss in the event of nonperformance by the other party to the commitment to extend credit, lines of credit and standby letters of credit is represented by the contractual amount of these instruments. The Company uses the same credit policies in making commitments under such instruments as it does for on-balance sheet instruments. The amount of collateral obtained, if any, is based on management's evaluation of the borrower. Collateral held varies, but may include accounts receivable, inventory, real estate and time deposits with financial institutions. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent cash requirements. The following table presents the outstanding off-balance sheet financial instruments whose contract amounts represent potential credit risk: September 30, 2015 December 31, 2014 (Dollars in thousands) Commitments under unfunded loans and lines of credit $ 904,773 $ 663,137 Letters of credit 16,560 6,607 Unused credit card lines — 4,512 In addition to the above noted credit commitments, the Company has committed to invest up to $10.8 million in limited partnership interests of unconsolidated entities, of which $7.1 million was unfunded at September 30, 2015. The Company is subject in the normal course of business to various pending and threatened legal proceedings in which claims for monetary damages are asserted. Management, after consultation with legal counsel, does not anticipate that the aggregate ultimate liability arising out of litigation pending or threatened against the Company will be material to the Company’s consolidated financial position. On an on-going basis the Company assesses any potential liabilities or contingencies in connection with such legal proceedings. For those matters where it is deemed probable that the Company will incur losses and the amount of the losses can be reasonably estimated, the Company would record an expense and corresponding liability in its consolidated financial statements.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Benefits	EMPLOYEE BENEFITS The Compensation Committee of the Company's Board of Directors may grant or award eligible participants stock options, restricted stock, restricted stock units, stock appreciation rights, and other stock-based awards or any combination of awards (collectively referred to herein as “Rights”). At September 30, 2015, the Company had Rights outstanding from the 2006 BNC Bancorp Omnibus Stock Ownership and Long Term Incentive Plan (the "2006 Omnibus Plan"), the BNC Bancorp 2013 Omnibus Stock Incentive Plan (the "2013 Omnibus Plan") and the KeySource Non-Statutory and Incentive Stock Option plans (the "KeySource Plans"). The 2013 Omnibus Plan and the KeySource Plans are the only plans that are available for future grants. At September 30, 2015, the Company had 128,683 Rights issued under the 2006 Omnibus Plan, 475,104 Rights issued and 880,970 Rights available for grants or awards under the 2013 Omnibus Plan, and 107,408 stock options issued and 35,607 stock options available for issuance related to the KeySource Plans. Stock Option Awards . The fair value of each option award is estimated on the date of grant using the Black-Scholes-Merton option pricing model. The risk-free interest rate is based on the U.S. Treasury rate for the expected life at the time of grant. Volatility is based on the average volatility of the Company based upon previous trading history. The expected life and forfeiture assumptions are based on historical data. Dividend yield is based on the yield at the time of the option grant. A summary of the Company’s stock option activity for the nine months ended September 30, 2015 is presented below: Shares Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (Dollars in thousands, except per share amounts) Outstanding at December 31, 2014 337,778 $ 11.37 Issued 57,037 8.11 Exercised 206,140 11.83 Forfeited or expired — — Outstanding at September 30, 2015 188,675 $ 9.87 2.98 $ 2,332 Exercisable at September 30, 2015 188,651 $ 9.87 2.98 $ 2,332 Share options expected to vest 24 $ 4.77 0.00 $ — The stock options issued during the nine months ended September 30, 2015 were replacement awards to certain Valley employees in connection with the business combination. These stock options were fully vested at the acquisition date. The related compensation expense recognized for stock options was immaterial for the nine months ended September 30, 2015 and 2014 , respectively. At September 30, 2015 , there was no unrecognized compensation cost related to non-vested stock options granted under the plans. Restricted Stock Awards. A summary of the activity of the Company’s unvested restricted stock awards for the nine months ended September 30, 2015 is presented below: Number of Shares Weighted Average Grant-Date Fair Value per Share Unvested at December 31, 2014 601,268 $ 14.90 Granted 39,000 19.67 Vested (111,409 ) 13.24 Forfeited (6,334 ) 13.99 Unvested at September 30, 2015 522,525 $ 15.62 The Company measures the fair value of restricted shares based on the price of the Company's common stock on the grant date, and compensation expense is recorded over the vesting period. The related compensation expense recognized for restricted stock awards for the nine months ended September 30, 2015 and 2014 was $2.0 million and $1.2 million , respectively. At September 30, 2015 , there was $6.4 million of total unrecognized compensation cost related to unvested restricted stock granted under the plans. That cost is expected to be recognized over a weighted average period of 2.33 years . The grant-date fair value of restricted stock grants vested during the nine months ended September 30, 2015 was $1.5 million .

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	These consolidated financial statements and notes are presented in accordance with the instructions for Form 10-Q and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, all normal recurring adjustments necessary for a fair statement of the consolidated financial position and consolidated results of operations have been made. The information contained in the consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 should be referred to in connection with these unaudited interim consolidated financial statements.
Reclassifications	Certain amounts in the 2014 consolidated financial statements have been reclassified to conform to 2015 presentation. These reclassifications had no effect on net income or shareholders' equity as previously reported.
Use of Estimates	The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those relating to the allowance for loan losses, determination of fair value of acquired assets and assumed liabilities, and valuation of goodwill and intangible assets.
Recently Adopted and Issued Accounting Standards	Recently Adopted and Issued Accounting Standards In September 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (Topic 805) , which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize measurement period adjustments during the period in which it determines the amount of the adjustment. ASU 2015-16 is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (Subtopic 835-30) , which amends the presentation of debt issuance costs in the balance sheet as a direct deduction from the related debt liability. This update affects disclosures related to debt issuance costs but does not affect existing recognition and measurement guidance for these items. ASU 2015-03 is effective for annual and interim periods beginning after December 15, 2015. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In February 2015, the FASB issued ASU 2015-02 Amendments to the Consolidation Analysis (Topic 810) , which amends the consolidation analysis required under GAAP. The revised guidance amends the consolidation analysis based on certain fee arrangements or relationships to the reporting entity and, for limited partnerships, requires entities to consider the limited partner’s rights relative to the general partner. Although the amendments are expected to result in the deconsolidation of many entities, the Company will need to reevaluate all of its previous consolidation conclusions. ASU 2015-02 is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted (including during an interim period), provided that the guidance is applied as of the beginning of the annual period containing the adoption date. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) . This ASU was developed as a joint project with the International Accounting Standards Board to remove inconsistencies in revenue requirements and provide a more robust framework for addressing revenue issues. The ASU’s core principle is that an entity should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued ASU No. 2015-14, which deferred the effective date by one year (i.e., interim and annual reporting periods beginning after December 15, 2017). Early adoption is permitted, but not before the original effective date (i.e., interim and annual reporting periods beginning after December 15, 2016). The ASU may be adopted using either a modified retrospective method or a full retrospective method. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements. In January 2014, the FASB issued ASU No. 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (Subtopic 310-40) , to clarify that an in substance repossession or foreclosure occurs upon either the creditor obtaining legal title to the residential real estate property or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. The amendments are effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2014. The amendments may be adopted using either a modified retrospective transition method or a prospective transition method and early adoption is permitted. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2015
Valley Financial Corporation
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of assets received and liabilities assumed for Valley, as well as the associated fair value adjustments, are as follows: As Recorded by Valley Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 13,263 $ — $ 13,263 Investment securities available-for-sale 152,125 (796 ) (1) 151,329 Federal Home Loan Bank stock, at cost 4,338 — 4,338 Loans 624,006 (15,973 ) (2) 608,033 Premises and equipment 8,934 892 (3) 9,826 Accrued interest receivable 2,263 — 2,263 Other real estate owned 8,114 — 8,114 Core deposit intangible — 6,964 (4) 6,964 Other assets 31,297 3,641 (5) 34,938 Total assets acquired $ 844,340 $ (5,272 ) 839,068 Liabilities Deposits $ (646,053 ) $ (1,086 ) (6) (647,139 ) Borrowings (141,087 ) 548 (7) (140,539 ) Other liabilities (972 ) (458 ) (8) (1,430 ) Total liabilities assumed $ (788,112 ) $ (996 ) (789,108 ) Net assets acquired 49,960 Total consideration paid 108,700 Goodwill $ 58,740 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of investment securities available-for-sale. (2) Adjustment to reflect estimated fair value of loans. (3) Adjustment to reflect estimated fair value of premises and equipment. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (7) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (8) Adjustment to reflect the estimated fair market value of certain leases. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (5,500,697 shares) $ 107,924 Fair value of Valley stock options assumed 773 Cash payments to shareholders 3 Total consideration paid $ 108,700
Business Acquisition, Pro Forma Information [Table Text Block]	Cost savings are also not reflected in the unaudited pro-forma amounts for three and nine months ended September 30, 2015 and 2014, respectively (dollars in thousands). Actual from acquisition date through September 30, 2015 Pro-forma for three months ended September 30, Pro-forma for nine months ended September 30, 2015 2014 2015 2014 Net interest income $ 6,390 $ 46,259 $ 45,439 $ 137,779 $ 134,836 Non-interest income 413 9,169 8,302 26,944 24,637 Net income 1,382 11,939 12,413 28,498 36,836 Pro-forma earnings per share: Basic $ 0.31 $ 0.33 $ 0.75 $ 0.97 Diluted $ 0.31 $ 0.32 $ 0.75 $ 0.96
Harbor Bank Group, Inc
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of assets received and liabilities assumed for Harbor, as well as the associated fair value adjustments, are as follows: As Recorded by Harbor Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 5,833 $ — $ 5,833 Investment securities available-for-sale 9,200 — 9,200 Federal Home Loan Bank stock, at cost 1,259 — 1,259 Loans 293,848 (4,207 ) (1) 289,641 Premises and equipment 1,801 — 1,801 Accrued interest receivable 643 — 643 Other real estate owned 11 — 11 Core deposit intangible — 3,700 (2) 3,700 Other assets 6,718 381 (3) 7,099 Total assets acquired $ 319,313 $ (126 ) 319,187 Liabilities Deposits $ (254,521 ) $ (253 ) (4) (254,774 ) Borrowings (29,720 ) (184 ) (5) (29,904 ) Other liabilities (2,268 ) (85 ) (6) (2,353 ) Total liabilities assumed $ (286,509 ) $ (522 ) (287,031 ) Net assets acquired 32,156 Total consideration paid (3,082,714 shares of voting common stock) 51,003 Goodwill $ 18,847 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect recording of core deposit intangible. (3) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (4) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (5) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (6) Adjustment to reflect the estimated fair market value of certain leases.
Community First
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of assets received and liabilities assumed for Community First, as well as the associated fair value adjustments, are as follows: As Recorded by Community First Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 47,330 $ — $ 47,330 Investment securities available-for-sale 12,000 — 12,000 Federal Home Loan Bank stock, at cost 293 — 293 Loans 152,885 (15,139 ) (1) 137,746 Premises and equipment 545 (131 ) (2) 414 Accrued interest receivable 436 — 436 Other real estate owned 1,419 (271 ) (3) 1,148 Core deposit intangible — 3,624 (4) 3,624 Other assets 6,849 4,552 (5) 11,401 Total assets acquired $ 221,757 $ (7,365 ) 214,392 Liabilities Deposits $ (191,486 ) $ (180 ) (6) (191,666 ) Borrowings (4,560 ) — (4,560 ) Other liabilities (1,063 ) (205 ) (7) (1,268 ) Total liabilities assumed $ (197,109 ) $ (385 ) (197,494 ) Net assets acquired 16,898 Total consideration paid 26,734 Goodwill $ 9,836 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect estimated fair value of premises and equipment. (3) Adjustment to reflect estimated fair value of other real estate owned. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (7) Adjustment to reflect the estimated fair market value of certain leases. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (1,190,763 shares) $ 20,128 Redemption of preferred stock 850 Cash payments to common shareholders 5,756 Total consideration paid $ 26,734
South Street Financial Corporation
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of assets received and liabilities assumed for South Street, as well as the associated fair value adjustments, are as follows: As Recorded by South Street Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash and due from banks $ 39,680 $ — $ 39,680 Investment securities available-for-sale 13,000 — 13,000 Federal Home Loan Bank stock, at cost 895 — 895 Loans 188,386 (10,433 ) (1) 177,953 Premises and equipment 9,273 (611 ) (2) 8,662 Accrued interest receivable 592 — 592 Other real estate owned 12,358 (3,788 ) (3) 8,570 Core deposit intangible — 2,387 (4) 2,387 Other assets 13,554 4,878 (5) 18,432 Total assets acquired $ 277,738 $ (7,567 ) 270,171 Liabilities Deposits $ (236,526 ) $ (1,188 ) (6) (237,714 ) Borrowings (12,300 ) — (12,300 ) Other liabilities (7,075 ) — (7,075 ) Total liabilities assumed $ (255,901 ) $ (1,188 ) (257,089 ) Net assets acquired 13,082 Total consideration paid 25,763 Goodwill $ 12,681 Explanation of fair value adjustments: (1) Adjustment to reflect estimated fair value of loans. (2) Adjustment to reflect estimated fair value of premises and equipment. (3) Adjustment to reflect estimated fair value of other real estate owned. (4) Adjustment to reflect recording of core deposit intangible. (5) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (6) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (1,139,931 shares) $ 19,778 Cash payments to common shareholders 5,985 Total consideration paid $ 25,763

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The Company's basic and diluted earnings per share calculations are presented in the following table: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands, except per share amounts) Net income $ 11,939 $ 8,268 $ 31,711 $ 20,885 Weighted average participating common shares - basic 38,057,633 29,471,545 34,460,987 28,558,941 Effects of dilutive Stock Rights 107,448 95,769 83,925 107,539 Weighted average participating common shares - diluted 38,165,081 29,567,314 34,544,912 28,666,480 Basic earnings per common share $ 0.31 $ 0.28 $ 0.92 $ 0.73 Diluted earnings per common share $ 0.31 $ 0.28 $ 0.92 $ 0.73

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities are presented in the following tables: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2015 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 12,024 $ 348 $ — $ 12,372 State and municipals 171,229 9,819 41 181,007 Corporate debt securities 36,758 38 136 36,660 Asset-backed debt securities 74,720 10 1,204 73,526 Equity securities 11,563 207 497 11,273 Mortgage-backed securities: Residential government sponsored 87,050 1,009 68 87,991 Other government sponsored 1,664 101 — 1,765 $ 395,008 $ 11,532 $ 1,946 $ 404,594 Held-to-maturity: State and municipals $ 227,138 $ 5,494 $ 608 $ 232,024 Corporate debt securities 14,000 67 960 13,107 $ 241,138 $ 5,561 $ 1,568 $ 245,131 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2014 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 17,636 $ 252 $ — $ 17,888 State and municipals 178,263 10,899 227 188,935 Corporate debt securities 13,808 4 197 13,615 Asset-backed debt securities 12,764 — 198 12,566 Equity securities 6,145 85 321 5,909 Mortgage-backed securities: Residential government sponsored 27,450 884 60 28,274 Other government sponsored 1,972 131 — 2,103 $ 258,038 $ 12,255 $ 1,003 $ 269,290 Held-to-maturity: State and municipals $ 213,092 $ 6,266 $ 389 $ 218,969 Corporate debt securities 14,000 48 1,020 13,028 Asset-backed debt securities 10,000 — — 10,000 $ 237,092 $ 6,314 $ 1,409 $ 241,997
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at September 30, 2015 , by contractual maturity, are shown below. The expected life of mortgage-backed securities will differ from contractual maturities because borrowers may have the right to call or prepay the underlying mortgage loans with or without call or prepayment penalties. For purposes of the maturity table, mortgage-backed securities have been included in maturity groupings based on the contractual maturity. Amortized Cost Fair Value (Dollars in thousands) Available-for-sale: Due within one year $ 233 $ 237 Due after one through five years 19,031 20,074 Due after five through ten years 39,581 39,997 Due after ten years 324,600 333,013 Total debt securities 383,445 393,321 Equity securities 11,563 11,273 $ 395,008 $ 404,594 Held-to-maturity: Due within one year $ 1,546 $ 1,572 Due after one year through five years 25,706 25,698 Due after five through ten years 18,132 18,213 Due after ten years 195,754 199,648 $ 241,138 $ 245,131
Schedule of Realized Gain (Loss)	The following table presents a summary of realized gains and losses from the sale of investment securities: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Proceeds from sales $ 99,626 $ 15,140 $ 119,503 $ 49,297 Gross realized gains on sales $ 812 $ 137 $ 894 $ 474 Gross realized losses on sales (18 ) (83 ) (55 ) (985 ) Total realized gains (losses), net $ 794 $ 54 $ 839 $ (511 )
Investments in a Continuous Unrealized Loss Position, Fair Value	The following tables detail gross unrealized losses and fair values of investment securities aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position: Less Than 12 Months 12 Months or More Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2015 (Dollars in thousands) Available-for-sale: State and municipals 3 $ 7,622 $ 27 1 $ 1,054 $ 14 $ 8,676 $ 41 Corporate debt securities 3 13,974 111 1 2,975 25 16,949 136 Asset-backed debt securities 17 61,056 870 1 4,457 334 65,513 1,204 Equity securities 1 5,350 67 1 549 430 5,899 497 Mortgage-backed securities 5 6,147 30 2 2,299 38 8,446 68 29 $ 94,149 $ 1,105 6 $ 11,334 $ 841 $ 105,483 $ 1,946 Held-to-maturity: State and municipals 41 $ 49,090 $ 393 11 $ 9,690 $ 215 $ 58,780 $ 608 Corporate debt securities — — — 1 3,040 960 3,040 960 41 49,090 393 12 12,730 1,175 61,820 1,568 Less Than 12 Months 12 Months or More Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2014 (Dollars in thousands) Available-for-sale: State and municipals — $ — $ — 11 $ 24,083 $ 227 24,083 $ 227 Corporate debt securities 3 10,134 172 1 2,975 25 13,109 197 Asset-backed debt securities — — — 1 4,566 198 4,566 198 Equity securities 1 1,850 18 1 676 303 2,526 321 Mortgage-backed securities 1 4,703 11 4 4,476 49 9,179 60 5 $ 16,687 $ 201 18 $ 36,776 $ 802 $ 53,463 $ 1,003 Held-to-maturity: State and municipals 2 $ 2,148 $ 25 36 $ 42,297 $ 364 $ 44,445 $ 389 Corporate debt securities — — — 1 2,980 1,020 2,980 1,020 2 $ 2,148 $ 25 37 $ 45,277 $ 1,384 $ 47,425 $ 1,409

Loans and Allowance for Loan 25

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Schedule of Financing Receivables Originated and Acquired	Major categories of loans are presented below: September 30, 2015 December 31, 2014 Originated Acquired (1) Total Originated Acquired (1) Total (Dollars in thousands) Commercial real estate $ 1,510,589 $ 622,130 $ 2,132,719 $ 1,181,492 $ 403,672 $ 1,585,164 Commercial construction 277,251 63,698 340,949 265,968 48,668 314,636 Commercial and industrial 235,879 104,332 340,211 154,132 38,200 192,332 Leases 25,593 — 25,593 21,100 — 21,100 Total commercial 2,049,312 790,160 2,839,472 1,622,692 490,540 2,113,232 Residential construction 57,349 34,213 91,562 43,298 29,854 73,152 Residential mortgage 468,141 560,835 1,028,976 439,600 432,818 872,418 Consumer and other 12,770 5,853 18,623 10,851 5,445 16,296 Total portfolio loans $ 2,587,572 $ 1,391,061 $ 3,978,633 $ 2,116,441 $ 958,657 $ 3,075,098 (1) Amount includes $45.5 million and $137.5 million of acquired loans covered under FDIC loss-share agreements at September 30, 2015 and December 31, 2014, respectively. The unpaid principal balance for acquired loans covered under FDIC loss-share agreements was $46.0 million and $140.4 million at September 30, 2015 and December 31, 2014, respectively.
Schedule Of Carrying Value Of Purchased Impaired And Nonimpaired Loans	The following table details changes in the carrying amount of covered acquired loans and accretable yield for loans receivable for the nine months ended September 30, 2015 and the year ended December 31, 2014: 2015 2014 Accretable Yield Carrying Value Accretable Yield Carrying Value (Dollars in thousands) Balance at beginning of period $ (2,213 ) $ 137,459 $ (6,058 ) $ 187,661 Reduction from payments and foreclosures, net — (19,337 ) — (54,489 ) Reduction from expiration of loss-share coverage 480 (74,400 ) — — Reclass from non-accretable to accretable yield (113 ) 113 (221 ) 221 Accretion 1,662 1,662 4,066 4,066 Balance at end of period $ (184 ) $ 45,497 $ (2,213 ) $ 137,459
Analysis of Allowance for Loan Losses by Class of Financing Receivable	A summary of the changes to the allowance for loan losses, by class of financing receivable, is presented below: For the three months ended September 30, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance June 30, 2015 $ 12,940 $ 5,547 $ 3,255 $ 92 $ 463 $ 8,138 $ 200 $ 30,635 Charge-offs (593 ) — (42 ) — — (536 ) (36 ) (1,207 ) Recoveries 403 113 689 — 5 313 10 1,533 Provision (1) 271 (842 ) 78 (4 ) 57 581 57 198 Change in FDIC indemnification asset (1) 1 157 (100 ) — — (386 ) 2 (326 ) Balance September 30, 2015 $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 For the three months ended September 30, 2014 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance June 30, 2014 $ 12,087 $ 5,184 $ 3,331 $ 54 $ 160 $ 9,036 $ 277 $ 30,129 Charge-offs (878 ) (324 ) (379 ) — — (1,267 ) (18 ) (2,866 ) Recoveries 680 377 383 — 3 1,002 96 2,541 Provision (2) 2,299 760 (509 ) (28 ) 334 (1,391 ) (161 ) 1,304 Change in FDIC indemnification asset (2) 35 (265 ) (150 ) — — (1 ) (5 ) (386 ) Balance September 30, 2014 $ 14,223 $ 5,732 $ 2,676 $ 26 $ 497 $ 7,379 $ 189 $ 30,722 For the nine months ended September 30, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance December 31, 2014 $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Charge-offs (2,153 ) (80 ) (151 ) — — (1,223 ) (302 ) (3,909 ) Recoveries 955 1,606 1,175 — 39 782 130 4,687 Provision (1) 1,616 (578 ) (200 ) (15 ) (87 ) (331 ) 204 609 Change in FDIC indemnification asset (1) (81 ) (284 ) (170 ) — 3 (431 ) 10 (953 ) Balance September 30, 2015 $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 For the nine months ended September 30, 2014 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Allowance for loan losses: Balance December 31, 2013 $ 14,752 $ 6,738 $ 3,137 $ 56 $ 213 $ 7,730 $ 249 $ 32,875 Charge-offs (2,956 ) (3,468 ) (2,128 ) — — (3,705 ) (182 ) (12,439 ) Recoveries 1,190 1,693 805 — 16 1,650 118 5,472 Provision (2) 1,401 1,457 1,081 (30 ) 274 1,847 (25 ) 6,005 Change in FDIC indemnification asset (2) (164 ) (688 ) (219 ) — (6 ) (143 ) 29 (1,191 ) Balance September 30, 2014 $ 14,223 $ 5,732 $ 2,676 $ 26 $ 497 $ 7,379 $ 189 $ 30,722 (1) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $0.1 million and $(0.1) million for the three and nine months ended September 30, 2015 , respectively. This resulted in a decrease in the FDIC indemnification asset of $0.3 million and $1.0 million , which is the difference between the net provision on covered loans and the total reduction to the allowance for loan losses allocable to the covered loan portfolio of $(0.5) million and $(1.3) million for the three and nine months ended September 30, 2015 , respectively. (2) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.1) million and $(0.3) million for the three and nine months ended September 30, 2014 , respectively. This resulted in a decrease in the FDIC indemnification asset of $0.4 million and $1.2 million , which is the difference between the net provision on covered loans and the total additions to the allowance for loan losses allocable to the covered loan portfolio of $(0.5) million and $(1.5) million for the three and nine months ended September 30, 2014 , respectively. The following table provides a breakdown of the recorded investment in loans and the allowance for loan losses based on the method of determining the allowance: Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balances at September 30, 2015: Specific reserves: Impaired loans $ 1,817 $ 165 $ 617 $ — $ 53 $ 1,637 $ 1 $ 4,290 Purchase credit impaired loans 1,327 406 59 — 16 1,208 4 3,020 Total specific reserves 3,144 571 676 — 69 2,845 5 7,310 General reserves 9,878 4,404 3,204 88 456 5,265 228 23,523 Total $ 13,022 $ 4,975 $ 3,880 $ 88 $ 525 $ 8,110 $ 233 $ 30,833 Loans: Individually evaluated for impairment $ 25,528 $ 3,480 $ 1,642 $ — $ 478 $ 15,995 $ 10 $ 47,133 Purchase credit impaired loans 92,669 15,728 3,080 — 1,252 44,393 219 157,341 Loans collectively evaluated for impairment 2,014,522 321,741 335,489 25,593 89,832 968,588 18,394 3,774,159 Total $ 2,132,719 $ 340,949 $ 340,211 $ 25,593 $ 91,562 $ 1,028,976 $ 18,623 $ 3,978,633 Balances at December 31, 2014: Specific reserves: Impaired loans $ 1,614 $ 118 $ 42 $ — $ 230 $ 972 $ 13 $ 2,989 Purchase credit impaired loans 1,727 424 152 — — 1,556 11 3,870 Total specific reserves 3,341 542 194 — 230 2,528 24 6,859 General reserves 9,344 3,769 3,032 103 340 6,785 167 23,540 Total $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Loans: Individually evaluated for impairment $ 27,578 $ 4,080 $ 1,264 $ — $ 657 $ 13,019 $ 126 $ 46,724 Purchase credit impaired loans 82,477 11,326 4,591 — 952 50,164 872 150,382 Loans collectively evaluated for impairment 1,475,109 299,230 186,477 21,100 71,543 809,235 15,298 2,877,992 Total $ 1,585,164 $ 314,636 $ 192,332 $ 21,100 $ 73,152 $ 872,418 $ 16,296 $ 3,075,098
Schedule Of Impaired Loans	The following tables present information related to impaired loans, excluding purchased impaired loans: Impaired Loans - With Allowance Impaired Loans - With No Allowance Recorded Investment Unpaid Principal Balance Allowances for Loan Losses Allocated Recorded Investment Unpaid Principal Balance September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 10,477 $ 10,446 $ 1,737 $ 14,136 $ 14,099 Commercial construction 1,595 1,591 142 1,714 1,707 Commercial and industrial 1,425 1,417 572 — — Residential construction 345 344 41 — — Residential mortgage 7,504 7,480 819 3,278 3,266 Consumer and other 10 10 1 — — Total originated 21,356 21,288 3,312 19,128 19,072 Acquired: Commercial real estate 660 673 80 1,103 1,125 Commercial construction 182 181 23 181 181 Commercial and industrial 223 227 45 — 27 Residential construction 111 111 12 24 588 Residential mortgage 4,214 4,627 819 4,877 5,029 Total acquired 5,390 5,819 979 6,185 6,950 Total impaired loans $ 26,746 $ 27,107 $ 4,291 $ 25,313 $ 26,022 Impaired Loans - With Allowance Impaired Loans - With No Allowance Recorded Investment Unpaid Principal Balance Allowances for Loan Losses Allocated Recorded Investment Unpaid Principal Balance December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 10,110 $ 10,089 $ 1,571 $ 17,095 $ 17,071 Commercial construction 1,734 1,728 105 2,227 2,218 Commercial and industrial 798 790 26 268 271 Residential construction 350 349 44 — — Residential mortgage 6,278 6,260 694 5,057 5,045 Consumer and other 127 126 13 — — Total originated 19,397 19,342 2,453 24,647 24,605 Acquired: Commercial real estate 429 428 43 796 824 Commercial construction 133 132 13 469 467 Commercial and industrial 204 203 16 1 28 Residential construction 308 308 185 114 114 Residential mortgage 1,574 1,614 279 7,266 7,744 Total acquired 2,648 2,685 536 8,646 9,177 Total impaired loans $ 22,045 $ 22,027 $ 2,989 $ 33,293 $ 33,782
Schedule of Average Recorded Investment and Interest Income Recognized on Impaired Loans	The following table presents information related to the average recorded investment and interest income recognized on impaired loans, excluding purchased impaired loans: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income Average Recorded Investment Interest Income (Dollars in thousands) Impaired loans with allowance: Commercial real estate $ 11,238 $ 109 $ 13,364 $ 121 $ 12,120 $ 302 $ 27,158 $ 311 Commercial construction 1,620 15 1,411 12 1,638 53 5,905 72 Commercial and industrial 1,487 17 941 5 1,456 46 603 10 Residential construction 382 4 352 3 378 11 433 4 Residential mortgage 7,318 46 6,902 32 7,329 105 11,299 129 Consumer and other 10 — 179 3 42 1 21 — Total impaired loans with allowance $ 22,055 $ 191 $ 23,149 $ 176 $ 22,963 $ 518 $ 45,419 $ 526 Impaired loans with no allowance: Commercial real estate $ 17,621 $ 147 $ 13,901 $ 143 $ 19,766 $ 386 $ 9,146 $ 149 Commercial construction 2,001 14 7,145 41 2,406 44 6,667 166 Commercial and industrial 281 1 21 — 316 1 481 6 Residential construction 82 — — — 101 — — — Residential mortgage 12,646 43 11,985 73 12,588 89 11,389 164 Consumer and other — — 12 — 81 — 41 — Total impaired loans with no allowance $ 32,631 $ 205 $ 33,064 $ 257 $ 35,258 $ 520 $ 27,724 $ 485
Aging of Financing Receivables	The following tables present an aging analysis of the recorded investment in the Company's loans: 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Past Due Current Total Loans September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 743 $ 741 $ — $ 1,984 $ 3,468 $ 1,507,121 $ 1,510,589 Commercial construction — 83 — 594 677 276,574 277,251 Commercial and industrial 372 129 — 169 670 235,209 235,879 Leases — — — — — 25,593 25,593 Residential construction — — — — — 57,349 57,349 Residential mortgage 1,067 310 — 3,167 4,544 463,597 468,141 Consumer and other 52 — — — 52 12,718 12,770 Total originated 2,234 1,263 — 5,914 9,411 2,578,161 2,587,572 Acquired: Commercial real estate — 658 — 4,847 5,505 616,625 622,130 Commercial construction 41 — — 443 484 63,214 63,698 Commercial and industrial 57 314 — 120 491 103,841 104,332 Residential construction — 52 — 134 186 34,027 34,213 Residential mortgage 588 348 — 8,749 9,685 551,150 560,835 Consumer and other 23 12 — 29 64 5,789 5,853 Total acquired 709 1,384 — 14,322 16,415 1,374,646 1,391,061 Total loans $ 2,943 $ 2,647 $ — $ 20,236 $ 25,826 $ 3,952,807 $ 3,978,633 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Past Due Current Total Loans December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 1,974 $ — $ — $ 3,476 $ 5,450 $ 1,176,042 $ 1,181,492 Commercial construction 12 — — 1,084 1,096 264,872 265,968 Commercial and industrial 102 24 — 417 543 153,589 154,132 Leases — — — — — 21,100 21,100 Residential construction 200 — — — 200 43,098 43,298 Residential mortgage 1,508 1,268 — 3,498 6,274 433,326 439,600 Consumer and other 6 — — — 6 10,845 10,851 Total originated 3,802 1,292 — 8,475 13,569 2,102,872 2,116,441 Acquired: Commercial real estate 880 155 — 4,508 5,543 398,129 403,672 Commercial construction 230 67 — 779 1,076 47,592 48,668 Commercial and industrial 121 27 — 197 345 37,855 38,200 Residential construction — — — 422 422 29,432 29,854 Residential mortgage 2,200 848 — 10,312 13,360 419,458 432,818 Consumer and other 92 2 — 30 124 5,321 5,445 Total acquired 3,523 1,099 — 16,248 20,870 937,787 958,657 Total loans $ 7,325 $ 2,391 $ — $ 24,723 $ 34,439 $ 3,040,659 $ 3,075,098
Financing Receivable Credit Quality Indicators	The following tables present the recorded investment in the Company’s loans by credit quality indicator: Pass Special Mention Substandard Doubtful Loss Total September 30, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,440,104 $ 42,584 $ 27,901 $ — $ — $ 1,510,589 Commercial construction 264,222 6,356 6,673 — — 277,251 Commercial and industrial 225,869 5,578 4,432 — — 235,879 Leases 25,593 — — — — 25,593 Residential construction 56,981 24 344 — — 57,349 Residential mortgage 436,247 21,059 10,835 — — 468,141 Consumer and other 12,177 583 10 — — 12,770 Total originated 2,461,193 76,184 50,195 — — 2,587,572 Acquired: Commercial real estate 542,028 33,484 46,618 — — 622,130 Commercial construction 46,501 5,520 11,541 136 — 63,698 Commercial and industrial 94,400 429 9,503 — — 104,332 Residential construction 31,643 1,065 1,505 — — 34,213 Residential mortgage 499,997 37,466 22,580 792 — 560,835 Consumer and other 5,693 131 28 1 — 5,853 Total acquired 1,220,262 78,095 91,775 929 — 1,391,061 Total loans $ 3,681,455 $ 154,279 $ 141,970 $ 929 $ — $ 3,978,633 Pass Special Mention Substandard Doubtful Loss Total December 31, 2014 (Dollars in thousands) Originated: Commercial real estate $ 1,100,361 $ 46,935 $ 34,196 $ — $ — $ 1,181,492 Commercial construction 256,987 5,530 3,451 — — 265,968 Commercial and industrial 145,722 3,980 4,430 — — 154,132 Leases 21,100 — — — — 21,100 Residential construction 42,806 143 349 — — 43,298 Residential mortgage 407,319 20,946 11,335 — — 439,600 Consumer and other 10,331 428 92 — — 10,851 Total originated 1,984,626 77,962 53,853 — — 2,116,441 Acquired: Commercial real estate 342,240 35,816 25,531 85 — 403,672 Commercial construction 36,346 5,910 6,320 92 — 48,668 Commercial and industrial 36,039 644 1,482 35 — 38,200 Residential construction 28,833 — 1,021 — — 29,854 Residential mortgage 370,523 36,098 24,616 1,581 — 432,818 Consumer and other 5,256 159 30 — — 5,445 Total acquired 819,237 78,627 59,000 1,793 — 958,657 Total loans $ 2,803,863 $ 156,589 $ 112,853 $ 1,793 $ — $ 3,075,098
Troubled Debt Restructurings on Financing Receivables	The following tables provide a summary of loans modified as TDRs: Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated September 30, 2015 (Dollars in thousands) Commercial real estate $ 6,724 $ — $ 6,724 $ 238 Commercial construction 894 48 942 15 Commercial and industrial 1,219 — 1,219 510 Residential mortgage 6,715 14 6,729 424 Consumer and other 10 — 10 1 Total modifications $ 15,562 $ 62 $ 15,624 $ 1,188 Number of contracts 36 2 38 Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated December 31, 2014 (Dollars in thousands) Commercial real estate $ 3,835 $ — $ 3,835 $ 165 Commercial construction 1,341 50 1,391 16 Commercial and industrial 651 — 651 25 Residential mortgage 7,625 16 7,641 592 Consumer and other 126 — 126 13 Total modifications $ 13,578 $ 66 $ 13,644 $ 811 Number of contracts 33 2 35
New Troubled Debt Restructurings By Modification Category	The following tables present new TDRs by modification category. All balances represent the recorded investment at the end of the period in which the modification was made. Three Months Ended September 30, 2015 Nine Months Ended September 30, 2015 Term Total Term Payment Interest Only Combination Total (Dollars in thousands) Commercial real estate $ 1,403 $ 1,403 $ 1,820 $ — $ 358 $ 863 $ 3,041 Commercial and industrial — — 93 419 231 — 743 Residential mortgage 149 149 149 — — — 149 Total modifications $ 1,552 $ 1,552 $ 2,062 $ 419 $ 589 $ 863 $ 3,933 Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Term Payment Combination Total Term Interest Only Payment Combination Total (Dollars in thousands) Commercial real estate $ — $ — $ — $ — $ — $ — $ 1,338 $ — $ 1,338 Commercial and industrial — — 158 158 — — — 158 158 Residential construction — — — — — 479 — — 479 Residential mortgage 755 — — 755 755 — — — 755 Consumer and other — 11 — 11 — — 11 — 11 Total modifications $ 755 $ 11 $ 158 $ 924 $ 755 $ 479 $ 1,349 $ 158 $ 2,741
Loans Modified in Troubled Debt Restructurings During the Previous 12 months Which Experienced a Payment Default	The following tables summarize the period-end balance for loans modified and classified as TDRs in the previous 12 months for which a payment default has occurred. The Company defines payment default as movement of the restructuring to nonaccrual status, foreclosure or charge-off, whichever occurs first. No TDRs defaulted during the three months ended September 30, 2015 and 2014, respectively. Nine Months Ended September 30, 2015 2014 (dollars in thousands) Commercial real estate $ — $ 1,210 Commercial construction — 1,245 Residential mortgage — 129 Consumer and other 34 —
Loan Sale Activity On Single Family Residential First Mortgage Loans Originated For Sale On A Presold Basis	Loan sale activity is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Loans held for sale $ 37,437 $ 20,906 $ 37,437 $ 20,906 Proceeds from sales of loans held for sale 105,373 76,206 281,344 212,809 Mortgage fees 3,031 2,128 8,307 5,640
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	The following table presents loans acquired during the nine months ended September 30, 2015, at acquisition date, accounted for under ASC 310-30: Contractually required payments receivable $ 35,772 Contractual cash flows not expected to be collected (non-accretable) (6,368 ) Expected cash flows 29,404 Interest component of expected cash flows (480 ) Fair value of loans acquired $ 28,924

FDIC Indemnification Asset (Tab

FDIC Indemnification Asset (Tables)	9 Months Ended
	Sep. 30, 2015
FDIC Indemnification Asset [Abstract]
FDIC Indemnification Asset Roll Forward	The following table presents activity for the FDIC indemnification asset for the nine months ended September 30, 2015 and the year ended December 31, 2014: 2015 2014 (Dollars in thousands) Balance at beginning of period $ 5,097 $ 16,886 Accretion of present value discount, net 173 1,061 Post-acquisition adjustments 1,568 (2,920 ) Receipt of payments from FDIC (4,758 ) (9,930 ) Balance at end of period $ 2,080 $ 5,097

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The following table presents the fair value of the Company’s derivatives: September 30, 2015 December 31, 2014 Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value (Dollars in thousands) Derivative assets: Derivatives not designated as hedging instruments: Interest rate swaps $ 58,074 Other assets $ 1,829 $ 34,692 Other assets $ 723 Derivative liabilities: Derivatives designated as hedging instruments: Interest rate swap $ 125,000 Accrued expenses and other liabilities $ 2,442 $ 125,000 Accrued expenses and other liabilities $ 308 Derivatives not designated as hedging instruments: Interest rate swaps $ 58,074 Accrued expenses and other liabilities $ 1,829 $ 34,692 Accrued expenses and other liabilities $ 723
Offsetting Assets And Liabilities	Information about financial instruments that are eligible for offset in the consolidated balance sheets is presented in the following table: Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amount Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Financial Instruments Collateral Held/Pledged Net (Dollars in thousands) September 30, 2015 Derivative assets $ 1,829 $ — $ 1,829 $ — $ — $ 1,829 Derivative liabilities 4,271 — 4,271 — 4,271 — Total derivative instruments $ 6,100 $ — $ 6,100 $ — $ 4,271 $ 1,829 December 31, 2014 Derivative assets $ 723 $ — $ 723 $ — $ — $ 723 Derivative liabilities 1,031 — 1,031 — 1,031 — Total derivative instruments $ 1,754 $ — $ 1,754 $ — $ 1,031 $ 723
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents the amounts recorded in the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income, respectively, relating to derivative instruments designated as cash flow hedges, net of tax: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (Dollars in thousands) Amount of net gains (losses) recorded in OCI (effective portion) $ (876 ) $ 305 $ (1,344 ) $ (1,315 ) Amount of net losses reclassified from OCI to earnings (1) — — — 286 (1) Amount recorded in interest expense on demand deposits in the Consolidated Statements of Income

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Schedule of Short Term Debt	The following table presents the Company’s short-term borrowings: September 30, 2015 December 31, 2014 (Dollars in thousands) Repurchase agreements (1) $ 63,409 $ 25,834 Advances from FHLB 14,000 102,100 Total short-term borrowings $ 77,409 $ 127,934
Schedule of Long-term Debt Instruments	The following table presents the Company’s long-term debt: September 30, 2015 December 31, 2014 (Dollars in thousands) Advances from FHLB $ 83,108 $ 52,000 Subordinated notes 71,896 60,000 Junior subordinated debentures 36,328 23,713 191,332 135,713 Less: Prepayment penalty on extinguishment of FHLB advances 1,671 1,899 Total long-term debt $ 189,661 $ 133,814
Federal Home Loan Bank, Advances	The following table details the Company's long-term FHLB advances outstanding: Maturity Interest Rate (1) September 30, 2015 December 31, 2014 (Dollars in thousands) July 2016 0.88% $ — $ 2,000 August 2016 1.72% — 2,000 January 2018 2.15% — 15,000 January 2018 2.27% — 10,000 March 2018 1.17% 10,000 — July 2018 3.53% 10,000 — July 2018 1.78% 3,000 3,000 September 2018 1.34% 20,000 — June 2019 3.70% 5,000 — June 2019 3.97% 13,000 — January 2020 0.53% 10,000 10,000 January 2020 0.53% 10,000 10,000 81,000 52,000 Unamortized premium 2,108 — $ 83,108 $ 52,000

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2015
Accumulated Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table presents the changes in accumulated other comprehensive income, net of taxes: Three Months Ended September 30, 2015 and 2014 Unrealized Holding Gains (Losses) on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding Gains (Losses) on Cash Flow Hedging Activities Total Accumulated Other Comprehensive Income (Dollars in thousands) Balance at June 30, 2015 $ 5,968 $ 3,064 $ (664 ) $ 8,368 Other comprehensive income (loss) before reclassifications 572 — (876 ) (304 ) Reclassifications from accumulated other comprehensive income (501 ) (128 ) — (629 ) Net current period other comprehensive income (loss) 71 (128 ) (876 ) (933 ) Balance at September 30, 2015 $ 6,039 $ 2,936 (1,540 ) $ 7,435 Balance at June 30, 2014 $ 4,606 $ 3,499 $ 107 $ 8,212 Other comprehensive income before reclassifications 1,833 — 305 2,138 Reclassifications from accumulated other comprehensive income (34 ) (102 ) — (136 ) Net current period other comprehensive income (loss) 1,799 (102 ) 305 2,002 Balance at September 30, 2014 $ 6,405 $ 3,397 $ 412 $ 10,214 Nine Months Ended September 30, 2015 and 2014 Unrealized Holding Gains (Losses) on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding Gains (Losses) on Cash Flow Hedging Activities Total Accumulated Other Comprehensive Income (Dollars in thousands) Balance at December 31, 2014 $ 7,089 $ 3,289 $ (196 ) $ 10,182 Other comprehensive loss before reclassifications (521 ) — (1,344 ) (1,865 ) Reclassifications from accumulated other comprehensive income (529 ) (353 ) — (882 ) Net current period other comprehensive loss (1,050 ) (353 ) (1,344 ) (2,747 ) Balance at September 30, 2015 $ 6,039 $ 2,936 (1,540 ) $ 7,435 Balance at December 31, 2013 $ (1,946 ) $ 3,811 $ 1,441 $ 3,306 Other comprehensive income (loss) before reclassifications 8,029 — (1,315 ) 6,714 Reclassifications from accumulated other comprehensive income 322 (414 ) 286 194 Net current period other comprehensive income (loss) 8,351 (414 ) (1,029 ) 6,908 Balance at September 30, 2014 $ 6,405 $ 3,397 $ 412 $ 10,214
Reclassification Out Of Accumulated Other Comprehensive Income	The following table details reclassification adjustments from accumulated other comprehensive income: Three Months Ended September 30, Component of Accumulated Other Comprehensive Income 2015 2014 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains (losses) on investment securities available-for-sale $ 794 $ 54 Gain (loss) on sale of investment securities, net (293 ) (20 ) Income tax expense 501 34 Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 204 161 Interest income - investment securities (76 ) (59 ) Income tax expense 128 102 Total, net of tax Total reclassifications for the period $ 629 $ 136 Nine Months Ended September 30, Component of Accumulated Other Comprehensive Income 2015 2014 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains (losses) on investment securities available-for-sale $ 839 $ (511 ) Gain (loss) on sale of investment securities, net (310 ) 189 Income tax expense 529 (322 ) Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 561 657 Interest income - investment securities (208 ) (243 ) Income tax expense 353 414 Total, net of tax Unrealized holding gains (losses) on cash flow hedging activities — (457 ) Interest expense - demand deposits — 171 Income tax expense — (286 ) Total, net of tax Total reclassifications for the period $ 882 $ (194 ) (1) The amortization of the unrealized holding gains in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer. Both components are amortized as an adjustment of yield.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present information about certain assets and liabilities measured at fair value on a recurring basis: Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) September 30, 2015 Assets: Investment securities available-for-sale: U.S. Government agencies $ 12,372 $ — $ 12,372 $ — State and municipals 181,007 — 181,007 — Corporate debt securities 36,660 — 36,660 — Other debt securities 73,526 — 73,526 — Equity securities 11,273 549 10,724 — Mortgage-backed securities: Residential government sponsored 87,991 — 87,991 — Other government sponsored 1,765 — 1,765 — Total investment securities available-for-sale 404,594 549 404,045 — Derivative instruments: Interest rate swap - not designated 1,829 — 1,829 — Total derivative instruments 1,829 — 1,829 — Total assets measured at fair value on a recurring basis $ 406,423 $ 549 $ 405,874 $ — Liabilities: Interest rate swap - cash flow hedge $ 2,442 $ — $ 2,442 — Interest rate swap - not designated 1,829 — 1,829 — Total liabilities measured at fair value on a recurring basis $ 4,271 $ — $ 4,271 $ — Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) December 31, 2014 Assets: Investment securities available-for-sale: U.S. Government agencies $ 17,888 $ — $ 17,888 $ — State and municipals 188,935 — 188,935 — Corporate debt securities 13,615 — 13,615 — Other debt securities 12,566 — 12,566 — Equity securities 5,909 676 5,233 — Mortgage-backed securities: Residential government sponsored 28,274 — 28,274 — Other government sponsored 2,103 — 2,103 — Total investment securities available-for-sale 269,290 676 268,614 — Derivative instruments: Interest rate swap - not designated 723 — 723 — Total derivative instruments 723 — 723 — Total assets measured at fair value on a recurring basis $ 270,013 $ 676 $ 269,337 $ — Liabilities: Interest rate swap - cash flow hedge $ 308 $ — $ 308 $ — Interest rate swap - not designated 723 — 723 — Total liabilities measured at fair value on a recurring basis $ 1,031 $ — $ 1,031 $ —
Fair Value Measurements, Nonrecurring	The following tables present information about certain assets and liabilities measured at fair value on a nonrecurring basis: Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 (Dollars in thousands) September 30, 2015 Loans held for sale $ 37,437 $ — $ 37,437 $ — Impaired loans 197,164 — — 197,164 Other real estate owned 37,280 — — 37,280 Total assets measured at fair value on a nonrecurring basis $ 271,881 $ — $ 37,437 $ 234,444 December 31, 2014 Loans held for sale $ 37,280 $ — $ 37,280 $ — Impaired loans 190,247 — — 190,247 Other real estate owned 42,531 — — 42,531 Total assets measured at fair value on a nonrecurring basis $ 270,058 $ — $ 37,280 $ 232,778
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques	The following table presents the valuation and unobservable inputs for Level 3 assets and liabilities measured at fair value on a nonrecurring basis at September 30, 2015: Description Fair Value (in thousands) Valuation Methodology Unobservable Inputs Range of Inputs Impaired loans $ 197,164 Appraised value Discount to reflect current market conditions and ultimate collectability 0% - 20% Other real estate owned $ 37,280 Appraised value Discount to reflect current market conditions 0% - 20%
Fair Value, by Balance Sheet Grouping	The following tables present the carrying value and estimated fair values of the Company’s financial instruments, including those that are not measured and reported at fair value on a recurring basis or nonrecurring basis: Carrying Value Fair Value Level 1 Level 2 Level 3 September 30, 2015 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 70,507 $ 70,507 $ 70,507 $ — $ — Investment securities available-for-sale 404,594 404,594 549 404,045 — Investment securities held-to-maturity 241,138 245,131 — 245,131 — Federal Home Loan Bank stock 8,511 8,511 — 8,511 — Loans held for sale 37,437 37,437 — 37,437 — Loans receivable, net 3,947,800 4,000,155 — 3,802,991 197,164 Accrued interest receivable 15,528 15,528 — 15,528 — FDIC indemnification asset 2,080 2,080 — — 2,080 Investment in bank-owned life insurance 115,914 115,914 — 115,914 — Interest rate swap derivative - not designated 1,829 1,829 — 1,829 — Financial liabilities: Demand deposits and savings $ 2,896,330 $ 2,896,330 $ — $ 2,896,330 $ — Time deposits 1,478,161 1,491,808 — 1,491,808 — Short-term borrowings 77,409 77,409 — 77,409 — Long-term debt 189,661 186,839 — 186,839 — Accrued interest payable 971 971 — 971 — Interest rate swap derivative - cash flow hedge 2,442 2,442 — 2,442 — Interest rate swap derivative - not designated 1,829 1,829 — 1,829 — Carrying Value Fair Value Level 1 Level 2 Level 3 December 31, 2014 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 85,194 $ 85,194 $ 85,194 $ — $ — Investment securities available-for-sale 269,290 269,290 676 268,614 — Investment securities held-to-maturity 237,092 241,997 — 241,997 — Federal Home Loan Bank stock 10,562 10,562 — 10,562 — Loans held for sale 37,280 37,280 — 37,280 — Loans receivable, net 3,044,699 3,070,477 — 2,880,230 190,247 Accrued interest receivable 14,514 14,514 — 14,514 — FDIC indemnification asset 5,097 5,097 — — 5,097 Investment in bank-owned life insurance 93,396 93,396 — 93,396 — Interest rate swap derivative - not designated 723 723 — 723 — Financial liabilities: Demand deposits and savings $ 2,192,723 $ 2,192,723 $ — $ 2,192,723 $ — Time deposits 1,203,674 1,218,869 — 1,218,869 — Short-term borrowings 127,934 127,934 — 127,934 — Long-term debt 133,814 131,417 — 131,417 — Accrued interest payable 2,011 2,011 — 2,011 — Interest rate swap derivative - cash flow hedge 308 308 — 308 — Interest rate swap derivative - not designated 723 723 — 723 —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value Off Balance Sheet Risks	The following table presents the outstanding off-balance sheet financial instruments whose contract amounts represent potential credit risk: September 30, 2015 December 31, 2014 (Dollars in thousands) Commitments under unfunded loans and lines of credit $ 904,773 $ 663,137 Letters of credit 16,560 6,607 Unused credit card lines — 4,512

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	A summary of the Company’s stock option activity for the nine months ended September 30, 2015 is presented below: Shares Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (Dollars in thousands, except per share amounts) Outstanding at December 31, 2014 337,778 $ 11.37 Issued 57,037 8.11 Exercised 206,140 11.83 Forfeited or expired — — Outstanding at September 30, 2015 188,675 $ 9.87 2.98 $ 2,332 Exercisable at September 30, 2015 188,651 $ 9.87 2.98 $ 2,332 Share options expected to vest 24 $ 4.77 0.00 $ —
Schedule of Nonvested Restricted Stock Units Activity	A summary of the activity of the Company’s unvested restricted stock awards for the nine months ended September 30, 2015 is presented below: Number of Shares Weighted Average Grant-Date Fair Value per Share Unvested at December 31, 2014 601,268 $ 14.90 Granted 39,000 19.67 Vested (111,409 ) 13.24 Forfeited (6,334 ) 13.99 Unvested at September 30, 2015 522,525 $ 15.62

Acquisitions - Pending Acquisi

Acquisitions - Pending Acquisition of Southcoast Financial Corporation (Details) - Southcoast Financial Corporation [Member] $ / shares in Units, $ in Millions	Aug. 14, 2015USD ($)branch$ / shares
Business Acquisition [Line Items]
Number of Branches Acquired	10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | $	$ 506
Business Acquisition, Share Price | $ / shares	$ 13.35
Business Acquisition, Equity Interest Issued or Issuable, Basis for Determining Value, Duration of Volume Weighted Average Stock Price	20 days

Acquisitions - Acquisition of C

Acquisitions - Acquisition of CertusBank N.A. Branches (Details)	Oct. 16, 2015branch
Subsequent Event [Member] | CertusBank, N.A. [Member]
Business Acquisition [Line Items]
Number of Branches Acquired	7

Acquisitions - Schedule of Rec

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Valley Financial (Details) $ in Thousands	Jul. 01, 2015USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		$ 6,390
Business Acquisition Pro Forma Net Interest Income Expense		46,259	$ 45,439	$ 137,779	$ 134,836
Business Combination Pro Forma Information Net Non Interest Income Expense Since Acquisition Date Actual		413
Business Acquisition Pro Forma Net Non Interest Income Expense		9,169	8,302	26,944	24,637
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		1,382
Business Acquisition, Pro Forma Net Income (Loss)		$ 11,939	$ 12,413	$ 28,498	$ 36,836
Valley Financial Corporation
Business Acquisition [Line Items]
Common stock issued	$ 107,924
Redemption of preferred stock	773
Cash payments to common stockholders	$ 3
Ratio of Shares Issued Per Share of Acquired Entity	1.1081
Total consideration paid	$ 108,700
As Recorded By Acquiree | Valley Financial Corporation
Business Acquisition [Line Items]
Cash and due from banks	13,263
Investment securities available-for-sale	152,125
Federal Home Loan Bank stock, at cost	4,338
Loans	624,006
Premises and equipment	8,934
Accrued interest receivable	2,263
Other real estate owned	8,114
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangible	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	31,297
Total assets acquired	844,340
Deposits	(646,053)
Long-term Debt	(141,087)
Other Liabilities	(972)
Total liabilities assumed	(788,112)
Measurement Period Adjustments | Valley Financial Corporation
Business Acquisition [Line Items]
Cash and due from banks	0
Investment securities available-for-sale	(796)
Federal Home Loan Bank stock, at cost	0
Loans	(15,973)
Premises and equipment	892
Accrued interest receivable	0
Other real estate owned	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangible	6,964
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	3,641
Total assets acquired	(5,272)
Deposits	(1,086)
Long-term Debt	548
Other Liabilities	(458)
Total liabilities assumed	(996)
As Recorded By Acquirer | Valley Financial Corporation
Business Acquisition [Line Items]
Cash and due from banks	13,263
Investment securities available-for-sale	151,329
Federal Home Loan Bank stock, at cost	4,338
Loans	608,033
Premises and equipment	9,826
Accrued interest receivable	2,263
Other real estate owned	8,114
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Core Deposit Intangible	6,964
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	34,938
Total assets acquired	839,068
Deposits	(647,139)
Long-term Debt	(140,539)
Other Liabilities	(1,430)
Total liabilities assumed	(789,108)
Net assets acquired	49,960
Total consideration paid	108,700
Goodwill	$ 58,740

Acquisitions - Schedule of R36

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Harbor Bank Group (Details)	Jul. 01, 2015USD ($)shares	Dec. 02, 2014USD ($)shares	Sep. 30, 2015shares	Dec. 01, 2014USD ($)
Harbor Bank Group, Inc
Business Acquisition [Line Items]
Ratio of Shares Issued Per Share of Acquired Entity		0.950
Harbor Bank Group, Inc | As Recorded By Acquiree
Business Acquisition [Line Items]
Cash and due from banks				$ 5,833,000
Investment securities available-for-sale				9,200,000
Federal Home Loan Bank stock, at cost				1,259,000
Loans				293,848,000
Premises and equipment				1,801,000
Accrued interest receivable				643,000
Other real estate owned				11,000
Core deposit intangible				0
Other assets				6,718,000
Total assets acquired				319,313,000
Deposits				(254,521,000)
Long-term Debt				(29,720,000)
Other Liabilities				(2,268,000)
Total liabilities assumed				(286,509,000)
Harbor Bank Group, Inc | Measurement Period Adjustments
Business Acquisition [Line Items]
Cash and due from banks				0
Investment securities available-for-sale				0
Federal Home Loan Bank stock, at cost				0
Loans				(4,207,000)
Premises and equipment				0
Accrued interest receivable				0
Other real estate owned				0
Core deposit intangible				3,700,000
Other assets				381,000
Total assets acquired				(126,000)
Deposits				(253,000)
Long-term Debt				(184,000)
Other Liabilities				(85,000)
Total liabilities assumed				(522,000)
Harbor Bank Group, Inc | As Recorded By Acquirer
Business Acquisition [Line Items]
Cash and due from banks				5,833,000
Investment securities available-for-sale				9,200,000
Federal Home Loan Bank stock, at cost				1,259,000
Loans				289,641,000
Premises and equipment				1,801,000
Accrued interest receivable				643,000
Other real estate owned				11,000
Core deposit intangible				3,700,000
Other assets				7,099,000
Total assets acquired				319,187,000
Deposits				(254,774,000)
Long-term Debt				(29,904,000)
Other Liabilities				(2,353,000)
Total liabilities assumed				(287,031,000)
Net assets acquired				32,156,000
Total consideration paid		$ 51,003,000
Goodwill				$ 18,847,000
Valley Financial Corporation
Business Acquisition [Line Items]
Ratio of Shares Issued Per Share of Acquired Entity	1.1081
Total consideration paid	$ 108,700,000
Goodwill, Expected Tax Deductible Amount	0
Valley Financial Corporation | As Recorded By Acquiree
Business Acquisition [Line Items]
Cash and due from banks	13,263,000
Investment securities available-for-sale	152,125,000
Federal Home Loan Bank stock, at cost	4,338,000
Loans	624,006,000
Premises and equipment	8,934,000
Accrued interest receivable	2,263,000
Other real estate owned	8,114,000
Total assets acquired	844,340,000
Deposits	(646,053,000)
Long-term Debt	(141,087,000)
Other Liabilities	(972,000)
Total liabilities assumed	(788,112,000)
Valley Financial Corporation | Measurement Period Adjustments
Business Acquisition [Line Items]
Cash and due from banks	0
Investment securities available-for-sale	(796,000)
Federal Home Loan Bank stock, at cost	0
Loans	(15,973,000)
Premises and equipment	892,000
Accrued interest receivable	0
Other real estate owned	0
Total assets acquired	(5,272,000)
Deposits	(1,086,000)
Long-term Debt	548,000
Other Liabilities	(458,000)
Total liabilities assumed	(996,000)
Valley Financial Corporation | As Recorded By Acquirer
Business Acquisition [Line Items]
Cash and due from banks	13,263,000
Investment securities available-for-sale	151,329,000
Federal Home Loan Bank stock, at cost	4,338,000
Loans	608,033,000
Premises and equipment	9,826,000
Accrued interest receivable	2,263,000
Other real estate owned	8,114,000
Total assets acquired	839,068,000
Deposits	(647,139,000)
Long-term Debt	(140,539,000)
Other Liabilities	(1,430,000)
Total liabilities assumed	(789,108,000)
Net assets acquired	49,960,000
Total consideration paid	108,700,000
Goodwill	$ 58,740,000
Common stock | Harbor Bank Group, Inc
Business Acquisition [Line Items]
Shares issued for acquisition, Shares | shares		3,082,714
Common stock | Valley Financial Corporation
Business Acquisition [Line Items]
Shares issued for acquisition, Shares | shares	5,500,697		5,500,697

Acquisitions - Schedule of Reco

Acquisitions - Schedule of Recognized Assets Acquired and Liabilities Assumed Community First Financial Group (Details) - Community First	Jun. 02, 2014USD ($)$ / sharesshares	Sep. 30, 2014shares
Business Acquisition [Line Items]
Ratio of Shares Issued Per Share of Acquired Entity	0.4069
Per Share of Acquired Entity | $ / shares	$ 5.90
Shareholders of Acquired Entity Electing Stock Conversion Option	75.00%
Shareholders of Acquired Entity Electing Cash Payment Option	25.00%
Total consideration paid	$ 26,734,000
Common stock issued	20,128,000
Redemption of preferred stock	850,000
Cash payments to common stockholders	5,756,000
Goodwill, Expected Tax Deductible Amount	0
As Recorded By Acquiree
Business Acquisition [Line Items]
Cash and due from banks	47,330,000
Investment securities available-for-sale	12,000,000
Federal Home Loan Bank stock, at cost	293,000
Loans	152,885,000
Premises and equipment	545,000
Accrued interest receivable	436,000
Other real estate owned	1,419,000
Core deposit intangible	0
Other assets	6,849,000
Total assets acquired	221,757,000
Deposits	(191,486,000)
Long-term Debt	(4,560,000)
Other Liabilities	(1,063,000)
Total liabilities assumed	(197,109,000)
Measurement Period Adjustments
Business Acquisition [Line Items]
Cash and due from banks	0
Investment securities available-for-sale	0
Federal Home Loan Bank stock, at cost	0
Loans	(15,139,000)
Premises and equipment	(131,000)
Accrued interest receivable	0
Other real estate owned	(271,000)
Core deposit intangible	3,624,000
Other assets	4,552,000
Total assets acquired	(7,365,000)
Deposits	(180,000)
Long-term Debt	0
Other Liabilities	(205,000)
Total liabilities assumed	(385,000)
As Recorded By Acquirer
Business Acquisition [Line Items]
Cash and due from banks	47,330,000
Investment securities available-for-sale	12,000,000
Federal Home Loan Bank stock, at cost	293,000
Loans	137,746,000
Premises and equipment	414,000
Accrued interest receivable	436,000
Other real estate owned	1,148,000
Core deposit intangible	3,624,000
Other assets	11,401,000
Total assets acquired	214,392,000
Deposits	(191,666,000)
Long-term Debt	(4,560,000)
Other Liabilities	(1,268,000)
Total liabilities assumed	(197,494,000)
Net assets acquired	16,898,000
Total consideration paid	26,734,000
Goodwill	$ 9,836,000
Common stock
Business Acquisition [Line Items]
Shares issued for acquisition | shares	1,190,763	1,190,763

Acquisitions - Schedule of Re38

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed South Street Financial (Details) - South Street Financial Corporation	Apr. 02, 2014USD ($)$ / sharesshares	Sep. 30, 2014shares
Business Acquisition [Line Items]
Ratio of Shares Issued Per Share of Acquired Entity	0.60
Per Share of Acquired Entity | $ / shares	$ 8.85
Shareholders of Acquired Entity Electing Stock Conversion Option	80.00%
Shareholders of Acquired Entity Electing Cash Payment Option	20.00%
Common stock issued	$ 19,778,000
Cash payments to common stockholders	5,985,000
Total consideration paid	25,763,000
Goodwill, Expected Tax Deductible Amount	0
As Recorded By Acquiree
Business Acquisition [Line Items]
Cash and due from banks	39,680,000
Investment securities available-for-sale	13,000,000
Federal Home Loan Bank stock, at cost	895,000
Loans	188,386,000
Premises and equipment	9,273,000
Accrued interest receivable	592,000
Other real estate owned	12,358,000
Core deposit intangible	0
Other assets	13,554,000
Total assets acquired	277,738,000
Deposits	(236,526,000)
Long-term Debt	(12,300,000)
Other Liabilities	(7,075,000)
Total liabilities assumed	(255,901,000)
Measurement Period Adjustments
Business Acquisition [Line Items]
Cash and due from banks	0
Investment securities available-for-sale	0
Federal Home Loan Bank stock, at cost	0
Loans	(10,433,000)
Premises and equipment	(611,000)
Accrued interest receivable	0
Other real estate owned	(3,788,000)
Core deposit intangible	2,387,000
Other assets	4,878,000
Total assets acquired	(7,567,000)
Deposits	(1,188,000)
Long-term Debt	0
Other Liabilities	0
Total liabilities assumed	(1,188,000)
As Recorded By Acquirer
Business Acquisition [Line Items]
Cash and due from banks	39,680,000
Investment securities available-for-sale	13,000,000
Federal Home Loan Bank stock, at cost	895,000
Loans	177,953,000
Premises and equipment	8,662,000
Accrued interest receivable	592,000
Other real estate owned	8,570,000
Core deposit intangible	2,387,000
Other assets	18,432,000
Total assets acquired	270,171,000
Deposits	(237,714,000)
Long-term Debt	(12,300,000)
Other Liabilities	(7,075,000)
Total liabilities assumed	(257,089,000)
Net assets acquired	13,082,000
Goodwill	12,681,000
Total consideration paid	$ 25,763,000
Common stock
Business Acquisition [Line Items]
Shares issued for acquisition | shares	1,139,931	1,139,931

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Business Combinations [Abstract]
Business Acquisition, Transaction Costs	$ 4.9	$ 9

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Net income	$ 11,939	$ 8,268	$ 31,711	$ 20,885
Weighted Average Participating Common Shares - Basic	38,057,633	29,471,545	34,460,987	28,558,941
Effects of Dilutive Stock Rights	107,448	95,769	83,925	107,539
Weighted Average Participating Common Shares - Diluted	38,165,081	29,567,314	34,544,912	28,666,480
Basic (USD per share)	$ 0.31	$ 0.28	$ 0.92	$ 0.73
Diluted (USD per share)	$ 0.31	$ 0.28	$ 0.92	$ 0.73
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0	0	0

Investment Securities - Marketa

Investment Securities - Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 395,008	$ 258,038
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	11,532	12,255
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	1,946	1,003
Investment securities available-for-sale, at fair value	404,594	269,290
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	241,138	237,092
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	5,561	6,314
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	1,568	1,409
Held-to-maturity Securities, Debt Maturities, Fair Value, Total	245,131	241,997
US Government Agencies
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	12,024	17,636
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	348	252
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	0	0
Investment securities available-for-sale, at fair value	12,372	17,888
State and Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	171,229	178,263
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	9,819	10,899
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	41	227
Investment securities available-for-sale, at fair value	181,007	188,935
Corporate Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	36,758	13,808
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	38	4
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	136	197
Investment securities available-for-sale, at fair value	36,660	13,615
Schedule of Held-to-maturity Securities [Line Items]
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	960	1,020
Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	74,720	12,764
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	10	0
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	1,204	198
Investment securities available-for-sale, at fair value	73,526	12,566
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	11,563	6,145
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	207	85
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	497	321
Investment securities available-for-sale, at fair value	11,273	5,909
Residential Government Sponsored Mortgage Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	87,050	27,450
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	1,009	884
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	68	60
Investment securities available-for-sale, at fair value	87,991	28,274
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	1,664	1,972
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	101	131
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	0	0
Investment securities available-for-sale, at fair value	1,765	2,103
Asset-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost		10,000
Held To Maturity Securities, Accumulated Unrecognized Holding Gain		0
Held To Maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities, Debt Maturities, Fair Value, Total		10,000
State And Municipal Securities
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	227,138	213,092
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	5,494	6,266
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	608	389
Held-to-maturity Securities, Debt Maturities, Fair Value, Total	232,024	218,969
Corporate Debt Securities
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	14,000	14,000
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	67	48
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	960	1,020
Held-to-maturity Securities, Debt Maturities, Fair Value, Total	$ 13,107	$ 13,028

Investment Securities - Investm

Investment Securities - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 233
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	19,031
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	39,581
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	324,600
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total	383,445
Available-for-sale Equity Securities, Amortized Cost Basis	11,563
Available-for-sale Securities, Amortized Cost Basis	395,008	$ 258,038
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount	1,546
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	25,706
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	18,132
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	195,754
Held-to-maturity Securities, Debt Maturities, Amortized Cost, Total	241,138	237,092
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	237
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	20,074
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	39,997
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	333,013
Available-for-sale Securities, Debt Securities, Fair Value	393,321
Available-for-sale Securities, Equity Securities, Fair Value	11,273
Available-for-sale Securities, Fair Value	404,594	269,290
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value	1,572
Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value	25,698
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	18,213
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	199,648
Held-to-maturity Securities, Debt Maturities, Fair Value, Total	$ 245,131	$ 241,997

Investment Securities - Schedul

Investment Securities - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 99,626	$ 15,140	$ 119,503	$ 49,297
Gross realized gains on sales	812	137	894	474
Gross realized losses on sales	(18)	(83)	(55)	(985)
Total realized gains (losses), net	$ 794	$ 54	$ 839	$ (511)

- Summary of Investment Securit

- Summary of Investment Securities, Continuous Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2015USD ($)Security	Dec. 31, 2014USD ($)Security
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 94,149	$ 16,687
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	1,105	201
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	11,334	36,776
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	841	802
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	105,483	53,463
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	1,946	1,003
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	49,090	2,148
Held to maturity Securities, Continuous Unrealized Loss Position Less Than 12 Months, Accumulated Loss	393	25
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	12,730	45,277
Held to maturity Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Accumulated Loss	1,175	1,384
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	61,820	47,425
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	$ 1,568	$ 1,409
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	29	5
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	6	18
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	41	2
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	12	37
State And Municipal Securities
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 7,622	$ 0
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	27	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,054	24,083
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	14	227
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	8,676	24,083
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	41	227
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	49,090	2,148
Held to maturity Securities, Continuous Unrealized Loss Position Less Than 12 Months, Accumulated Loss	393	25
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	9,690	42,297
Held to maturity Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Accumulated Loss	215	364
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	58,780	44,445
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	$ 608	$ 389
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	3	0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	1	11
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	41	2
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	11	36
Corporate Debt Securities
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 13,974	$ 10,134
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	111	172
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,975	2,975
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	25	25
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	16,949	13,109
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	136	197
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	0
Held to maturity Securities, Continuous Unrealized Loss Position Less Than 12 Months, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,040	2,980
Held to maturity Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Accumulated Loss	960	1,020
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,040	2,980
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	$ 960	$ 1,020
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	3	3
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	1	1
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	0	0
Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	1	1
Asset-backed Securities [Member]
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 61,056	$ 0
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	870	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,457	4,566
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	334	198
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	65,513	4,566
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	$ 1,204	$ 198
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	17	0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	1	1
Equity Securities
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 5,350	$ 1,850
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	67	18
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	549	676
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	430	303
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	5,899	2,526
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	$ 497	$ 321
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	1	1
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	1	1
Collateralized Mortgage Backed Securities
Schedule of Investment Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 6,147	$ 4,703
Available For Sale Securities, Continuous Unrealized Loss Position, Less Than 12 Months, Aggregate Losses Accumulated In Investments	30	11
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,299	4,476
Available For Sale Securities, Continuous Unrealized Loss Position 12 Months Or Longer, Aggregate Losses Accumulated In Investments	38	49
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	8,446	9,179
Available For Sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated In Investments	$ 68	$ 60
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | Security	5	1
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | Security	2	4

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014
Schedule of Investment Securities [Line Items]
Security Owned and Pledged as Collateral, Fair Value		$ 348.5	$ 269.2
State And Municipal Securities
Schedule of Investment Securities [Line Items]
Held-to-maturity Securities, Sold at Carrying Value	$ 3.3
Held-to-maturity Securities, Realized Gain (Loss)	0.2
Corporate Debt Securities
Schedule of Investment Securities [Line Items]
Held-to-maturity Securities, Sold at Carrying Value	5.2
Held-to-maturity Securities, Realized Gain (Loss)	$ 0.1

Loans and Allowance for Loan 46

Loans and Allowance for Loan Losses - Schedule of Financing Receivables Originated and Acquired (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Originated loans	$ 2,587,572	$ 2,116,441
Acquired loans	1,391,061	958,657
Loans and Leases Receivable, Net	3,978,633	3,075,098
Financing Receivable Covered by Loss Sharing Agreement	45,500	137,500
Unpaid Principal Balance Of Covered Acquired Loans	46,000	140,400
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Originated loans	1,510,589	1,181,492
Acquired loans	622,130	403,672
Loans and Leases Receivable, Net	2,132,719	1,585,164
Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Originated loans	277,251	265,968
Acquired loans	63,698	48,668
Loans and Leases Receivable, Net	340,949	314,636
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Originated loans	235,879	154,132
Acquired loans	104,332	38,200
Loans and Leases Receivable, Net	340,211	192,332
Leases
Financing Receivable, Recorded Investment [Line Items]
Originated loans	25,593	21,100
Acquired loans	0	0
Loans and Leases Receivable, Net	25,593	21,100
Total commercial
Financing Receivable, Recorded Investment [Line Items]
Originated loans	2,049,312	1,622,692
Acquired loans	790,160	490,540
Loans and Leases Receivable, Net	2,839,472	2,113,232
Residential construction
Financing Receivable, Recorded Investment [Line Items]
Originated loans	57,349	43,298
Acquired loans	34,213	29,854
Loans and Leases Receivable, Net	91,562	73,152
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Originated loans	468,141	439,600
Acquired loans	560,835	432,818
Loans and Leases Receivable, Net	1,028,976	872,418
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Originated loans	12,770	10,851
Acquired loans	5,853	5,445
Loans and Leases Receivable, Net	$ 18,623	$ 16,296

Loans and Allowance for Loan 47

Loans and Allowance for Loan Losses - Schedule of Changes in Accretable Yield and Carrying Value of Covered Acquired Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Accretable Yield
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ (2,213)	$ (6,058)
Reduction from payments and foreclosures, net	0	0
Reductions from Expiration of Loss-Share Coverage	480	0
Reclass from non-accretable to accretable yield	(113)	(221)
Accretion	(1,662)	(4,066)
Balance at end of period	(184)	(2,213)
Carrying Amount
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	137,459	187,661
Reduction from payments and foreclosures, net	19,337	(54,489)
Reductions from Expiration of Loss-Share Coverage	(74,400)	0
Reclass from non-accretable to accretable yield	113	221
Accretion	(1,662)	(4,066)
Balance at end of period	$ 45,497	$ 137,459

Loans and Allowance for Loan 48

Loans and Allowance for Loan Losses - Certain Loans Transferred During Acquisition (Details) $ in Thousands	Sep. 30, 2015USD ($)
Receivables [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 588,400
Contractually required payments receivable	35,772
Contractual cash flows not expected to be collected (non-accretable)	(6,368)
Expected cash flows	29,404
Interest component of expected cash flows	(480)
Fair value of loans acquired	28,924
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Fair Value	$ 575,700

Loans and Allowance for Loan 49

Loans and Allowance for Loan Losses - Analysis of Allowance for Loan Losses by Class of Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance			$ 30,399
Provision for loan losses	$ 198	$ 1,304	609	$ 6,005
Change in FDIC Indemnification Asset	300	400	1,000	1,200
Loans and leases, Allowance, Ending Balance	30,833		30,833
Loans and Leases Receivable, Net	3,978,633		3,978,633		$ 3,075,098
Net Provision For Loan Losses On Covered Loans	100	(100)	(100)	(300)
Provision for Loan and Lease Losses Covered by the FDIC	(500)	(500)	(1,300)	(1,500)
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	12,940	12,087	12,685	14,752
Charge-offs	(593)	(878)	(2,153)	(2,956)
Recoveries	403	680	955	1,190
Provision for loan losses	271	2,299	1,616	1,401
Change in FDIC Indemnification Asset	1	35	(81)	(164)
Loans and leases, Allowance, Ending Balance	13,022	14,223	13,022	14,223
Impaired loans	1,817		1,817		1,614
Purchase credit impaired loans	1,327		1,327		1,727
Total specific reserves	3,144		3,144		3,341
General reserves	9,878		9,878		9,344
Individually evaluated for impairment	25,528		25,528		27,578
Purchase credit impaired loans	92,669		92,669		82,477
Loans collectively evaluated for impairment	2,014,522		2,014,522		1,475,109
Loans and Leases Receivable, Net	2,132,719		2,132,719		1,585,164
Commercial construction
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	5,547	5,184	4,311	6,738
Charge-offs	0	(324)	(80)	(3,468)
Recoveries	113	377	1,606	1,693
Provision for loan losses	(842)	760	(578)	1,457
Change in FDIC Indemnification Asset	157	(265)	(284)	(688)
Loans and leases, Allowance, Ending Balance	4,975	5,732	4,975	5,732
Impaired loans	165		165		118
Purchase credit impaired loans	406		406		424
Total specific reserves	571		571		542
General reserves	4,404		4,404		3,769
Individually evaluated for impairment	3,480		3,480		4,080
Purchase credit impaired loans	15,728		15,728		11,326
Loans collectively evaluated for impairment	321,741		321,741		299,230
Loans and Leases Receivable, Net	340,949		340,949		314,636
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	3,255	3,331	3,226	3,137
Charge-offs	(42)	(379)	(151)	(2,128)
Recoveries	689	383	1,175	805
Provision for loan losses	78	(509)	(200)	1,081
Change in FDIC Indemnification Asset	(100)	(150)	(170)	(219)
Loans and leases, Allowance, Ending Balance	3,880	2,676	3,880	2,676
Impaired loans	617		617		42
Purchase credit impaired loans	59		59		152
Total specific reserves	676		676		194
General reserves	3,204		3,204		3,032
Individually evaluated for impairment	1,642		1,642		1,264
Purchase credit impaired loans	3,080		3,080		4,591
Loans collectively evaluated for impairment	335,489		335,489		186,477
Loans and Leases Receivable, Net	340,211		340,211		192,332
Leases
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	92	54	103	56
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(4)	(28)	(15)	(30)
Change in FDIC Indemnification Asset	0	0	0	0
Loans and leases, Allowance, Ending Balance	88	26	88	26
Impaired loans	0		0		0
Purchase credit impaired loans	0		0		0
Total specific reserves	0		0		0
General reserves	88		88		103
Individually evaluated for impairment	0		0		0
Purchase credit impaired loans	0		0		0
Loans collectively evaluated for impairment	25,593		25,593		21,100
Loans and Leases Receivable, Net	25,593		25,593		21,100
Residential construction
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	463	160	570	213
Charge-offs	0	0	0	0
Recoveries	5	3	39	16
Provision for loan losses	57	334	(87)	274
Change in FDIC Indemnification Asset	0	0	3	(6)
Loans and leases, Allowance, Ending Balance	525	497	525	497
Impaired loans	53		53		230
Purchase credit impaired loans	16		16		0
Total specific reserves	69		69		230
General reserves	456		456		340
Individually evaluated for impairment	478		478		657
Purchase credit impaired loans	1,252		1,252		952
Loans collectively evaluated for impairment	89,832		89,832		71,543
Loans and Leases Receivable, Net	91,562		91,562		73,152
Residential mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	8,138	9,036	9,313	7,730
Charge-offs	(536)	(1,267)	(1,223)	(3,705)
Recoveries	313	1,002	782	1,650
Provision for loan losses	581	(1,391)	(331)	1,847
Change in FDIC Indemnification Asset	(386)	(1)	(431)	(143)
Loans and leases, Allowance, Ending Balance	8,110	7,379	8,110	7,379
Impaired loans	1,637		1,637		972
Purchase credit impaired loans	1,208		1,208		1,556
Total specific reserves	2,845		2,845		2,528
General reserves	5,265		5,265		6,785
Individually evaluated for impairment	15,995		15,995		13,019
Purchase credit impaired loans	44,393		44,393		50,164
Loans collectively evaluated for impairment	968,588		968,588		809,235
Loans and Leases Receivable, Net	1,028,976		1,028,976		872,418
Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	200	277	191	249
Charge-offs	(36)	(18)	(302)	(182)
Recoveries	10	96	130	118
Provision for loan losses	57	(161)	204	(25)
Change in FDIC Indemnification Asset	2	(5)	10	29
Loans and leases, Allowance, Ending Balance	233	189	233	189
Impaired loans	1		1		13
Purchase credit impaired loans	4		4		11
Total specific reserves	5		5		24
General reserves	228		228		167
Individually evaluated for impairment	10		10		126
Purchase credit impaired loans	219		219		872
Loans collectively evaluated for impairment	18,394		18,394		15,298
Loans and Leases Receivable, Net	18,623		18,623		16,296
Financing Receivable
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	30,635	30,129	30,399	32,875
Charge-offs	(1,207)	(2,866)	(3,909)	(12,439)
Recoveries	1,533	2,541	4,687	5,472
Provision for loan losses	198	1,304	609	6,005
Change in FDIC Indemnification Asset	(326)	(386)	(953)	(1,191)
Loans and leases, Allowance, Ending Balance	30,833	$ 30,722	30,833	$ 30,722
Impaired loans	4,290		4,290		2,989
Purchase credit impaired loans	3,020		3,020		3,870
Total specific reserves	7,310		7,310		6,859
General reserves	23,523		23,523		23,540
Individually evaluated for impairment	47,133		47,133		46,724
Purchase credit impaired loans	157,341		157,341		150,382
Loans collectively evaluated for impairment	3,774,159		3,774,159		2,877,992
Loans and Leases Receivable, Net	$ 3,978,633		$ 3,978,633		$ 3,075,098

Loans and Allowance for Loan 50

Loans and Allowance for Loan Losses - Schedule of Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	$ 26,746	$ 22,045
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	27,107	22,027
Impaired Financing Receivable, Allowances for Loan Losses Allocated	4,291	2,989
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	25,313	33,293
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	26,022	33,782
Originated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	10,477	10,110
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	10,446	10,089
Impaired Financing Receivable, Allowances for Loan Losses Allocated	1,737	1,571
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	14,136	17,095
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	14,099	17,071
Originated | Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,595	1,734
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,591	1,728
Impaired Financing Receivable, Allowances for Loan Losses Allocated	142	105
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,714	2,227
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,707	2,218
Originated | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,425	798
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,417	790
Impaired Financing Receivable, Allowances for Loan Losses Allocated	572	26
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	268
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	271
Originated | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	345	350
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	344	349
Impaired Financing Receivable, Allowances for Loan Losses Allocated	41	44
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	0
Originated | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,504	6,278
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	7,480	6,260
Impaired Financing Receivable, Allowances for Loan Losses Allocated	819	694
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,278	5,057
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,266	5,045
Originated | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	10	127
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	10	126
Impaired Financing Receivable, Allowances for Loan Losses Allocated	1	13
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	0
Originated | Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	21,356	19,397
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	21,288	19,342
Impaired Financing Receivable, Allowances for Loan Losses Allocated	3,312	2,453
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,128	24,647
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	19,072	24,605
Acquired (non-covered) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	660	429
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	673	428
Impaired Financing Receivable, Allowances for Loan Losses Allocated	80	43
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,103	796
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,125	824
Acquired (non-covered) | Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	182	133
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	181	132
Impaired Financing Receivable, Allowances for Loan Losses Allocated	23	13
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	181	469
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	181	467
Acquired (non-covered) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	223	204
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	227	203
Impaired Financing Receivable, Allowances for Loan Losses Allocated	45	16
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	1
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	27	28
Acquired (non-covered) | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	111	308
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	111	308
Impaired Financing Receivable, Allowances for Loan Losses Allocated	12	185
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	24	114
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	588	114
Acquired (non-covered) | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,214	1,574
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,627	1,614
Impaired Financing Receivable, Allowances for Loan Losses Allocated	819	279
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,877	7,266
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,029	7,744
Acquired (non-covered) | Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,390	2,648
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,819	2,685
Impaired Financing Receivable, Allowances for Loan Losses Allocated	979	536
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,185	8,646
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	$ 6,950	$ 9,177

Loans and Allowance for Loan 51

Loans and Allowance for Loan Losses - Schedule of Average Recorded Investments and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	$ 11,238	$ 13,364	$ 12,120	$ 27,158
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	109	121	302	311
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,621	13,901	19,766	9,146
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	147	143	386	149
Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,620	1,411	1,638	5,905
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	15	12	53	72
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,001	7,145	2,406	6,667
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	14	41	44	166
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,487	941	1,456	603
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	17	5	46	10
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	281	21	316	481
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1	0	1	6
Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	382	352	378	433
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	4	3	11	4
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	82	0	101	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	7,318	6,902	7,329	11,299
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	46	32	105	129
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	12,646	11,985	12,588	11,389
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	43	73	89	164
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	10	179	42	21
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	3	1	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	12	81	41
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	0	0	0
Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	22,055	23,149	22,963	45,419
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	191	176	518	526
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	32,631	33,064	35,258	27,724
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	$ 205	$ 257	$ 520	$ 485

Loans and Allowance for Loan 52

Loans and Allowance for Loan Losses - Aging of Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	$ 3,978,633	$ 3,075,098
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	2,132,719	1,585,164
Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	340,949	314,636
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	340,211	192,332
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	25,593	21,100
Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	91,562	73,152
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	1,028,976	872,418
Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	18,623	16,296
Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	25,826	34,439
Financing Receivable, Recorded Investment, Nonaccrual Status	20,236	24,723
Financing Receivable, Recorded Investment, Current	3,952,807	3,040,659
Loans and Leases Receivable, Net	3,978,633	3,075,098
Originated | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	3,468	5,450
Financing Receivable, Recorded Investment, Nonaccrual Status	1,984	3,476
Financing Receivable, Recorded Investment, Current	1,507,121	1,176,042
Loans and Leases Receivable, Net	1,510,589	1,181,492
Originated | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	677	1,096
Financing Receivable, Recorded Investment, Nonaccrual Status	594	1,084
Financing Receivable, Recorded Investment, Current	276,574	264,872
Loans and Leases Receivable, Net	277,251	265,968
Originated | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	670	543
Financing Receivable, Recorded Investment, Nonaccrual Status	169	417
Financing Receivable, Recorded Investment, Current	235,209	153,589
Loans and Leases Receivable, Net	235,879	154,132
Originated | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Current	25,593	21,100
Loans and Leases Receivable, Net	25,593	21,100
Originated | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	200
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Current	57,349	43,098
Loans and Leases Receivable, Net	57,349	43,298
Originated | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	4,544	6,274
Financing Receivable, Recorded Investment, Nonaccrual Status	3,167	3,498
Financing Receivable, Recorded Investment, Current	463,597	433,326
Loans and Leases Receivable, Net	468,141	439,600
Originated | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	52	6
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Current	12,718	10,845
Loans and Leases Receivable, Net	12,770	10,851
Originated | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	9,411	13,569
Financing Receivable, Recorded Investment, Nonaccrual Status	5,914	8,475
Financing Receivable, Recorded Investment, Current	2,578,161	2,102,872
Loans and Leases Receivable, Net	2,587,572	2,116,441
Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	5,505	5,543
Financing Receivable, Recorded Investment, Nonaccrual Status	4,847	4,508
Financing Receivable, Recorded Investment, Current	616,625	398,129
Loans and Leases Receivable, Net	622,130	403,672
Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	484	1,076
Financing Receivable, Recorded Investment, Nonaccrual Status	443	779
Financing Receivable, Recorded Investment, Current	63,214	47,592
Loans and Leases Receivable, Net	63,698	48,668
Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	491	345
Financing Receivable, Recorded Investment, Nonaccrual Status	120	197
Financing Receivable, Recorded Investment, Current	103,841	37,855
Loans and Leases Receivable, Net	104,332	38,200
Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	186	422
Financing Receivable, Recorded Investment, Nonaccrual Status	134	422
Financing Receivable, Recorded Investment, Current	34,027	29,432
Loans and Leases Receivable, Net	34,213	29,854
Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	9,685	13,360
Financing Receivable, Recorded Investment, Nonaccrual Status	8,749	10,312
Financing Receivable, Recorded Investment, Current	551,150	419,458
Loans and Leases Receivable, Net	560,835	432,818
Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	64	124
Financing Receivable, Recorded Investment, Nonaccrual Status	29	30
Financing Receivable, Recorded Investment, Current	5,789	5,321
Loans and Leases Receivable, Net	5,853	5,445
Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	16,415	20,870
Financing Receivable, Recorded Investment, Nonaccrual Status	14,322	16,248
Financing Receivable, Recorded Investment, Current	1,374,646	937,787
Loans and Leases Receivable, Net	1,391,061	958,657
30-59 Days Past Due | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,943	7,325
30-59 Days Past Due | Originated | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	743	1,974
30-59 Days Past Due | Originated | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	12
30-59 Days Past Due | Originated | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	372	102
30-59 Days Past Due | Originated | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
30-59 Days Past Due | Originated | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	200
30-59 Days Past Due | Originated | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	1,067	1,508
30-59 Days Past Due | Originated | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	52	6
30-59 Days Past Due | Originated | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,234	3,802
30-59 Days Past Due | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	880
30-59 Days Past Due | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	41	230
30-59 Days Past Due | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	57	121
30-59 Days Past Due | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
30-59 Days Past Due | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	588	2,200
30-59 Days Past Due | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	23	92
30-59 Days Past Due | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	709	3,523
60-89 Days Past Due | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,647	2,391
60-89 Days Past Due | Originated | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	741	0
60-89 Days Past Due | Originated | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	83	0
60-89 Days Past Due | Originated | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	129	24
60-89 Days Past Due | Originated | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
60-89 Days Past Due | Originated | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
60-89 Days Past Due | Originated | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	310	1,268
60-89 Days Past Due | Originated | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
60-89 Days Past Due | Originated | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	1,263	1,292
60-89 Days Past Due | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	658	155
60-89 Days Past Due | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	67
60-89 Days Past Due | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	314	27
60-89 Days Past Due | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	52	0
60-89 Days Past Due | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	348	848
60-89 Days Past Due | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	12	2
60-89 Days Past Due | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	1,384	1,099
Greater than 90 Days Past Due | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Originated | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Greater than 90 Days Past Due | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	$ 0	$ 0

Loans and Allowance for Loan 53

Loans and Allowance for Loan Losses - Financing Receivable Credit Quality indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 3,978,633	$ 3,075,098
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,132,719	1,585,164
Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	340,949	314,636
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	340,211	192,332
Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	25,593	21,100
Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	91,562	73,152
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,028,976	872,418
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	18,623	16,296
Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,978,633	3,075,098
Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,510,589	1,181,492
Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	277,251	265,968
Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	235,879	154,132
Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	25,593	21,100
Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	57,349	43,298
Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	468,141	439,600
Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	12,770	10,851
Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,587,572	2,116,441
Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	622,130	403,672
Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	63,698	48,668
Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	104,332	38,200
Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	34,213	29,854
Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	560,835	432,818
Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,853	5,445
Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,391,061	958,657
Pass | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,681,455	2,803,863
Pass | Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,440,104	1,100,361
Pass | Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	264,222	256,987
Pass | Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	225,869	145,722
Pass | Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	25,593	21,100
Pass | Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	56,981	42,806
Pass | Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	436,247	407,319
Pass | Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	12,177	10,331
Pass | Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,461,193	1,984,626
Pass | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	542,028	342,240
Pass | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	46,501	36,346
Pass | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	94,400	36,039
Pass | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	31,643	28,833
Pass | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	499,997	370,523
Pass | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,693	5,256
Pass | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,220,262	819,237
Special Mention | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	154,279	156,589
Special Mention | Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	42,584	46,935
Special Mention | Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	6,356	5,530
Special Mention | Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,578	3,980
Special Mention | Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Special Mention | Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	24	143
Special Mention | Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	21,059	20,946
Special Mention | Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	583	428
Special Mention | Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	76,184	77,962
Special Mention | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	33,484	35,816
Special Mention | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,520	5,910
Special Mention | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	429	644
Special Mention | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,065	0
Special Mention | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	37,466	36,098
Special Mention | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	131	159
Special Mention | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	78,095	78,627
Substandard | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	141,970	112,853
Substandard | Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	27,901	34,196
Substandard | Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	6,673	3,451
Substandard | Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	4,432	4,430
Substandard | Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Substandard | Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	344	349
Substandard | Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	10,835	11,335
Substandard | Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	10	92
Substandard | Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	50,195	53,853
Substandard | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	46,618	25,531
Substandard | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	11,541	6,320
Substandard | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	9,503	1,482
Substandard | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,505	1,021
Substandard | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	22,580	24,616
Substandard | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	28	30
Substandard | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	91,775	59,000
Doubtful | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	929	1,793
Doubtful | Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	85
Doubtful | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	136	92
Doubtful | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	35
Doubtful | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Doubtful | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	792	1,581
Doubtful | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1	0
Doubtful | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	929	1,793
Loss | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Originated | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Loss | Acquired (non-covered) | Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 0	$ 0

Loans and Allowance for Loan 54

Loans and Allowance for Loan Losses - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	Sep. 30, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 6,724	$ 3,835
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	238	165
Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	942	1,391
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	15	16
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,219	651
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	510	25
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,729	7,641
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	424	592
Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	10	126
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	1	13
Total Troubled Debt Restructurings
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	15,624	13,644
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	$ 1,188	$ 811
Total Number Of Contracts | contract	38	35
Accrual | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 6,724	$ 3,835
Accrual | Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	894	1,341
Accrual | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,219	651
Accrual | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,715	7,625
Accrual | Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	10	126
Accrual | Total Troubled Debt Restructurings
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 15,562	$ 13,578
Total Number Of Contracts | contract	36	33
Nonaccrual | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 0	$ 0
Nonaccrual | Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	48	50
Nonaccrual | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccrual | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	14	16
Nonaccrual | Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccrual | Total Troubled Debt Restructurings
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 62	$ 66
Total Number Of Contracts | contract	2	2

Loans and Allowance for Loan 55

Loans and Allowance for Loan Losses - Troubled Debt Restructurings by Modification Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,552	$ 924	$ 3,933	$ 2,741
Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,552	755	2,062	755
Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		11	419	1,349
Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment			589	479
Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		158	863	158
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,403	0	3,041	1,338
Commercial real estate | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,403	0	1,820	0
Commercial real estate | Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0	0	1,338
Commercial real estate | Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment			358	0
Commercial real estate | Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0	863	0
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	158	743	158
Commercial and industrial | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	93	0
Commercial and industrial | Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0	419	0
Commercial and industrial | Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment			231	0
Commercial and industrial | Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		158	0	158
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	149	755	149	755
Residential mortgage | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 149	755	149	755
Residential mortgage | Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0	0	0
Residential mortgage | Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment			0	0
Residential mortgage | Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0	$ 0	0
Residential construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0		479
Residential construction | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0		0
Residential construction | Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0		0
Residential construction | Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment				479
Residential construction | Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0		0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		11		11
Consumer Portfolio Segment [Member] | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0		0
Consumer Portfolio Segment [Member] | Payment Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		11		11
Consumer Portfolio Segment [Member] | Interest Only Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment				0
Consumer Portfolio Segment [Member] | Combination Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0		$ 0

Loans and Allowance for Loan 56

Loans and Allowance for Loan Losses - Loans Modified in Troubled Debt Restructurings During the Previous 12 months Which Experienced a Payment Default, Period End Balance (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 1,210
Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	1,245
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	129
Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 34	$ 0

Loans and Allowance for Loan 57

Loans and Allowance for Loan Losses - Loan Sale Activity On Single Family Residential First Mortgage Loans Originated For Sale On A Presold Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Receivables [Abstract]
Loans Receivable Held-for-sale, Net	$ 37,437	$ 20,906	$ 37,437	$ 20,906	$ 37,280
Proceeds from sales of loans held for sale	105,373	76,206	281,344	212,809
Mortgage fees	$ 3,031	$ 2,128	$ 8,307	$ 5,640

Loans and Allowance for Loan 58

Loans and Allowance for Loan Losses - Narrative (Details) - USD ($)	Jul. 01, 2015	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans that lose loss-sharing coverage	$ 74,400,000
Other Real Estate Owned Losing Loss-Share Coverage	$ 500,000
Loans and Leases Receivable, Collateral for Secured Borrowings		$ 1,510,000,000	$ 1,100,000,000
Mortgage Loans in Process of Foreclosure, Amount		1,600,000	2,500,000
Loans and Leases Receivable, Impaired, Commitment to Lend		$ 0	$ 0

FDIC Indemnification Asset - FD

FDIC Indemnification Asset - FDIC Indemnification Asset Roll Forward (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
FDIC Indemnification Asset [Roll Forward]
FDIC Indemnification Asset, Beginning Balance	$ 5,097	$ 16,886
Accretion of Present Value Discount, Net	173	1,061
FDIC Indemnification Asset, Acquisitions	1,568	(2,920)
Receipt of Payments from FDIC	(4,758)	(9,930)
FDIC Indemnification Asset, Ending Balance	$ 2,080	$ 5,097

FDIC Indemnification Asset - Na

FDIC Indemnification Asset - Narrative (Details) - USD ($) $ in Millions	Jul. 01, 2015	Dec. 31, 2014	Oct. 14, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Description of Regulatory Assistance		80.00%
Loans that lose loss-sharing coverage	$ 74.4
Other Real Estate Owned Losing Loss-Share Coverage	$ 0.5
Commercial and Other Loans, Excluding Single Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term of FDIC loss sharing agreement			5 years
Term of FDIC recovery reimbursement agreement			8 years
Single Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term of FDIC loss sharing agreement			10 years

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Goodwill and Other Intangible Assets [Roll Forward]
Beginning Balance	$ 83,701
Amortization of intangible assets	2,782	$ 1,621
Ending Balance	146,623
Finite-lived Intangible Assets [Roll Forward]
Amortization of intangible assets	$ 2,782	$ 1,621

Derivatives - Schedule of Inter

Derivatives - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Interest Rate Derivatives [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 6,100	$ 1,754
Not Designated as Hedging Instrument
Interest Rate Derivatives [Line Items]
Derivative Asset, Notional Amount	58,100	34,700
Not Designated as Hedging Instrument | Interest Rate Swap
Interest Rate Derivatives [Line Items]
Derivative Asset, Notional Amount	58,074	34,692
Derivative Liability, Notional Amount	58,074	34,692
Not Designated as Hedging Instrument | Interest Rate Swap | Other Assets
Interest Rate Derivatives [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,829	723
Not Designated as Hedging Instrument | Interest Rate Swap | Accrued Expenses and Other Liabilities
Interest Rate Derivatives [Line Items]
Derivative Liability, Fair Value, Gross Liability	1,829	723
Designated as Hedging Instrument | Interest Rate Swap
Interest Rate Derivatives [Line Items]
Derivative Liability, Notional Amount	125,000	125,000
Designated as Hedging Instrument | Interest Rate Swap | Accrued Expenses and Other Liabilities
Interest Rate Derivatives [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 2,442	$ 308

Derivatives - Summary of Offset

Derivatives - Summary of Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 6,100	$ 1,754
Interest rate swap derivative - not designated	6,100	1,754
Derivative, Collateral, Right to Reclaim Cash	4,271	1,031
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	1,829	723
Derivative Assets
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,829	723
Interest rate swap derivative - not designated	1,829	723
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	1,829	723
Derivative Liabilities
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,271	1,031
Interest rate swap derivative - not designated	4,271	1,031
Derivative, Collateral, Right to Reclaim Cash	4,271	1,031
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	$ 0	$ 0

Derivatives - Schedule of Cash

Derivatives - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount of net gain (losses) recorded in OCI (effective portion)	$ (876)	$ 305	$ (1,344)	$ (1,315)
Amount of net loss reclassified from OCI to earnings	$ 0	$ 0	$ 0	$ 286

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative, Maturity Date				Mar. 18, 2019
Accumulated other comprehensive income	$ (7,435,000)	$ (10,214,000)		$ (7,435,000)	$ (10,214,000)	$ (8,368,000)	$ (10,182,000)	$ (8,212,000)	$ (3,306,000)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months				1,400,000
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	0	0		0	0
Derivative, Net Liability Position, Aggregate Fair Value	4,300,000			4,300,000
Collateral Already Posted, Aggregate Fair Value	6,300,000			6,300,000
2013 Interest Rate Swap Derivative Contract
Derivative [Line Items]
Derivative, Notional Amount			$ 125,000,000
Amount Designated To Unsecured Variable Rate Money Market Funding Arrangement			$ 125,000,000
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Derivative [Line Items]
Accumulated other comprehensive income	1,540,000	$ (412,000)		1,540,000	$ (412,000)	$ 664,000	196,000	$ (107,000)	$ (1,441,000)
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 58,100,000			$ 58,100,000			$ 34,700,000

Borrowings - Schedule of Short

Borrowings - Schedule of Short Term Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Repurchase agreements (1)	$ 63,409	$ 25,834
Advances from FHLB	14,000	102,100
Total short-term borrowings	$ 77,409	$ 127,934

Borrowings - Schedule of Long-T

Borrowings - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Long-term Federal Home Loan Bank Advances, Net	$ 83,108	$ 52,000
Advances from FHLB	81,000	52,000
Subordinated notes	71,896	60,000
Junior subordinated debentures	36,328	23,713
Long-term Debt, Gross	191,332	135,713
Less: Prepayment penalty on extinguishment of FHLB advances	1,671	1,899
Total long-term debt	$ 189,661	$ 133,814

Borrowings - Schedule of Federa

Borrowings - Schedule of Federal Home Loan Bank Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Federal Home Loan Bank, Advances [Line Items]
Advances from FHLB	$ 81,000	$ 52,000
Unamortized premium	2,108	0
Net FHLB advances	$ 83,108	52,000
July 2,016
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	0.88%
Advances from FHLB	$ 0	2,000
August 2,016
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	1.72%
Advances from FHLB	$ 0	2,000
January 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	2.15%
Advances from FHLB	$ 0	15,000
January 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	2.27%
Advances from FHLB	$ 0	10,000
March 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	1.17%
Advances from FHLB	$ 10,000	0
July 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	3.53%
Advances from FHLB	$ 10,000	0
July 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	1.78%
Advances from FHLB	$ 3,000	3,000
September 2,018
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	1.34%
Advances from FHLB	$ 20,000	0
June 2,019
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	3.70%
Advances from FHLB	$ 5,000	0
June 2,019
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	3.97%
Advances from FHLB	$ 13,000	0
January 2020 0.53% Advance I [Member]
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	0.53%
Advances from FHLB	$ 10,000	10,000
January 2020 0.53% Advance II [Member]
Federal Home Loan Bank, Advances [Line Items]
Interest rate on FHLB advance	0.53%
Advances from FHLB	$ 10,000	$ 10,000

Borrowings - Additional Informa

Borrowings - Additional Information (Details) - USD ($)	Jul. 01, 2015	Nov. 14, 2014	Sep. 30, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available			$ 783,900,000
Long-term debt			189,661,000	$ 133,814,000
Federal Reserve Bank Amount Of Available Unused Funds			244,500,000
Federal Funds Borrowed			0
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Expiration Period		364 days
Line of Credit Facility, Maximum Borrowing Capacity		$ 15,000,000
Line of Credit, Current			0
Mortgage Loans on Real Estate [Member] | Federal Home Loan Bank [Member]
Short-term Debt [Line Items]
Fair Value of Securities Received as Collateral that Can be Resold or Repledged			1,080,000,000
Investment Securities [Member] | Federal Home Loan Bank [Member]
Short-term Debt [Line Items]
Fair Value of Securities Received as Collateral that Can be Resold or Repledged			6,500,000
Investment Securities [Member] | Federal Reserve Bank [Member]
Short-term Debt [Line Items]
Fair Value of Securities Received as Collateral that Can be Resold or Repledged			2,800,000
Total commercial | Federal Reserve Bank [Member]
Short-term Debt [Line Items]
Fair Value of Securities Received as Collateral that Can be Resold or Repledged			$ 428,500,000
Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member]
Short-term Debt [Line Items]
Long-term debt	$ 16,500,000
Long-term Debt	12,600,000
Debt Instrument, Unamortized Discount (Premium), Net	3,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Trust Preferred Securities	500,000
Valley Financial Corporation | Junior Subordinated Debt [Member]
Short-term Debt [Line Items]
Long-term debt	10,800,000
Long-term Debt	12,000,000
Debt Instrument, Unamortized Discount (Premium), Net	$ 1,200,000
Debt Instrument, Discount (Premium), Period of Amortization	8 years
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	5.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	9.50%
Debt Instrument, Interest Rate, Effective Percentage			5.50%
Valley Financial Corporation | Junior Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	5.00%
Minimum | Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member]
Short-term Debt [Line Items]
Debt Instrument, Discount (Premium), Period of Amortization	18 years
Maximum | Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member]
Short-term Debt [Line Items]
Debt Instrument, Discount (Premium), Period of Amortization	22 years
Valley Trust I [Member] | Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.10%
Valley Trust II [Member] | Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.49%
Valley Trust III [Member] | Valley Financial Corporation | Subordinated Debentures Subject to Mandatory Redemption [Member] | London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.73%

Accumulated Other Comprehensi70

Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$ 8,368	$ 8,212	$ 10,182	$ 3,306
Other Comprehensive Income Before Reclassifications	(304)	2,138	(1,865)	6,714
Amounts Reclassified From Accumulated Other Comprehensive Income	(629)	(136)	(882)	194
Total other comprehensive (loss) income	(933)	2,002	(2,747)	6,908
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	7,435	10,214	7,435	10,214
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	5,968	4,606	7,089	(1,946)
Other Comprehensive Income Before Reclassifications	572	1,833	(521)	8,029
Amounts Reclassified From Accumulated Other Comprehensive Income	(501)	(34)	(529)	322
Total other comprehensive (loss) income	71	1,799	(1,050)	8,351
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	6,039	6,405	6,039	6,405
Unrealized Holding Gains Investment Securities Transferred From Available For Sale To Held To Maturity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	3,064	3,499	3,289	3,811
Other Comprehensive Income Before Reclassifications	0	0	0	0
Amounts Reclassified From Accumulated Other Comprehensive Income	(128)	(102)	(353)	(414)
Total other comprehensive (loss) income	(128)	(102)	(353)	(414)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	2,936	3,397	2,936	3,397
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(664)	107	(196)	1,441
Other Comprehensive Income Before Reclassifications	(876)	305	(1,344)	(1,315)
Amounts Reclassified From Accumulated Other Comprehensive Income	0	0	0	286
Total other comprehensive (loss) income	(876)	305	(1,344)	(1,029)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ (1,540)	$ 412	$ (1,540)	$ 412

Accumulated Other Comprehensi71

Accumulated Other Comprehensive Income - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	$ (5,106)	$ (3,047)	$ (13,329)	$ (6,991)
Amounts Reclassified From Accumulated Other Comprehensive Income	629	136	882	(194)
Unrealized Holding Gains Investment Securities Transferred From Available For Sale To Held To Maturity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income	128	102	353	414
Unrealized Holding Gains Investment Securities Transferred From Available For Sale To Held To Maturity | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income	128	102	353	414
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income	501	34	529	(322)
Accumulated Net Unrealized Investment Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income	501	34	529	(322)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income	0	0	0	(286)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts Reclassified From Accumulated Other Comprehensive Income			0	(286)
Gain (Loss) on Sale of Investment Securities, Net | Accumulated Net Unrealized Investment Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	794	54	839	(511)
Interest Income - Investment Securities | Unrealized Holding Gains Investment Securities Transferred From Available For Sale To Held To Maturity | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	204	161	561	657
Income Tax Benefit (Expense) | Unrealized Holding Gains Investment Securities Transferred From Available For Sale To Held To Maturity | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	(76)	(59)	(208)	(243)
Income Tax Benefit (Expense) | Accumulated Net Unrealized Investment Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	$ (293)	$ 20	(310)	(189)
Income Tax Benefit (Expense) | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)			0	171
Interest Expense - Demand Deposits | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax			$ 0	$ (457)

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities, Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	$ 404,594	$ 269,290
Derivative Asset, Fair Value, Gross Asset	6,100	1,754
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	549	676
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	404,045	268,614
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	0	0
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	404,594	269,290
Derivative Asset, Fair Value, Gross Asset	1,829	723
Assets, Fair Value Disclosure, Recurring	406,423	270,013
Total liabilities measured at fair value on a recurring basis	4,271	1,031
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	549	676
Derivative Asset, Fair Value, Gross Asset	0	0
Assets, Fair Value Disclosure, Recurring	549	676
Total liabilities measured at fair value on a recurring basis	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	404,045	268,614
Derivative Asset, Fair Value, Gross Asset	1,829	723
Assets, Fair Value Disclosure, Recurring	405,874	269,337
Total liabilities measured at fair value on a recurring basis	4,271	1,031
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Derivative Asset, Fair Value, Gross Asset	0	0
Assets, Fair Value Disclosure, Recurring	0	0
Total liabilities measured at fair value on a recurring basis	0	0
US Government Agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	12,372	17,888
US Government Agencies | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	12,372	17,888
US Government Agencies | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
US Government Agencies | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	12,372	17,888
US Government Agencies | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
State And Municipal Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	181,007	188,935
State And Municipal Securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
State And Municipal Securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	181,007	188,935
State And Municipal Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	36,660	13,615
Corporate Debt Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	36,660	13,615
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	36,660	13,615
Corporate Debt Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Other Debt Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	73,526	12,566
Other Debt Securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Other Debt Securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	73,526	12,566
Other Debt Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	11,273	5,909
Equity Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	11,273	5,909
Equity Securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	549	676
Equity Securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	10,724	5,233
Equity Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	87,991	28,274
Residential Government Sponsored Mortgage Backed Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	87,991	28,274
Residential Government Sponsored Mortgage Backed Securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Residential Government Sponsored Mortgage Backed Securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	87,991	28,274
Residential Government Sponsored Mortgage Backed Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	1,765	2,103
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	1,765	2,103
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	1,765	2,103
Other Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	1,829	723
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Interest Rate Swap | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0	0
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	1,829	723
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Interest Rate Swap | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0	0
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	$ 0	$ 0

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value Measurements, Nonrecurring (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 197,164
Other real estate owned	37,280
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	$ 0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	37,437	37,280
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	37,437	37,280
Impaired loans	197,164	190,247
Other real estate owned	37,280	42,531
Total assets measured at fair value on a nonrecurring basis	271,881	270,058
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Impaired loans	0	0
Other real estate owned	0	0
Total assets measured at fair value on a nonrecurring basis	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	37,437	37,280
Impaired loans	0	0
Other real estate owned	0	0
Total assets measured at fair value on a nonrecurring basis	37,437	37,280
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Impaired loans	197,164	190,247
Other real estate owned	37,280	42,531
Total assets measured at fair value on a nonrecurring basis	$ 234,444	$ 232,778

Fair Value Measurements - Sum74

Fair Value Measurements - Summary of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 197,164
Other real estate owned	$ 37,280
Appraisal Valuation | Impaired Financing Receivable, Recorded Investment Member
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Techniques	Appraised value
Appraisal Valuation | Other Real Estate Owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Techniques	Appraised value
Minimum | Appraisal Valuation | Impaired Financing Receivable, Recorded Investment Member
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%
Minimum | Appraisal Valuation | Other Real Estate Owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%
Maximum | Appraisal Valuation | Impaired Financing Receivable, Recorded Investment Member
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments	20.00%
Maximum | Appraisal Valuation | Other Real Estate Owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments	20.00%

Fair Value Measurements - Sum75

Fair Value Measurements - Summary of Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale, at fair value	$ 404,594	$ 269,290
Investment securities held-to-maturity	245,131	241,997
Accrued interest receivable	15,528	14,514
FDIC indemnification asset	2,080	5,097	$ 16,886
Investment in bank-owned life insurance	115,914	93,396
Interest rate swap derivative - not designated	6,100	1,754
Time deposits	1,478,161	1,203,674
Short-term borrowings	77,409	127,934
Long-term debt	189,661	133,814
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	70,507	85,194
Investment securities available-for-sale, at fair value	404,594	269,290
Investment securities held-to-maturity	245,131	241,997
Federal Home Loan Bank stock	8,511	10,562
Loans held for sale	37,437	37,280
Loans receivable, net	4,000,155	3,070,477
Accrued interest receivable	15,528	14,514
FDIC indemnification asset	2,080	5,097
Investment in bank-owned life insurance	115,914	93,396
Demand deposits and savings	2,896,330	2,192,723
Time deposits	1,491,808	1,218,869
Short-term borrowings	77,409	127,934
Long-term debt	186,839	131,417
Accrued interest payable	971	2,011
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Reported Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	70,507	85,194
Investment securities available-for-sale, at fair value	404,594	269,290
Investment securities held-to-maturity	241,138	237,092
Federal Home Loan Bank stock	8,511	10,562
Loans held for sale	37,437	37,280
Loans receivable, net	3,947,800	3,044,699
Accrued interest receivable	15,528	14,514
FDIC indemnification asset	2,080	5,097
Investment in bank-owned life insurance	115,914	93,396
Demand deposits and savings	2,896,330	2,192,723
Time deposits	1,478,161	1,203,674
Short-term borrowings	77,409	127,934
Long-term debt	189,661	133,814
Accrued interest payable	971	2,011
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	70,507	85,194
Investment securities available-for-sale, at fair value	549	676
Investment securities held-to-maturity	0	0
Federal Home Loan Bank stock	0	0
Loans held for sale	0	0
Loans receivable, net	0	0
Accrued interest receivable	0	0
FDIC indemnification asset	0	0
Investment in bank-owned life insurance	0	0
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Accrued interest payable	0	0
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Investment securities available-for-sale, at fair value	404,045	268,614
Investment securities held-to-maturity	245,131	241,997
Federal Home Loan Bank stock	8,511	10,562
Loans held for sale	37,437	37,280
Loans receivable, net	3,802,991	2,880,230
Accrued interest receivable	15,528	14,514
FDIC indemnification asset	0	0
Investment in bank-owned life insurance	115,914	93,396
Demand deposits and savings	2,896,330	2,192,723
Time deposits	1,491,808	1,218,869
Short-term borrowings	77,409	127,934
Long-term debt	186,839	131,417
Accrued interest payable	971	2,011
Interest rate swap derivative - cash flow hedge	2,442	308
Interest rate swap derivative - not designated	1,829	723
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Investment securities available-for-sale, at fair value	0	0
Investment securities held-to-maturity	0	0
Federal Home Loan Bank stock	0	0
Loans held for sale	0	0
Loans receivable, net	197,164	190,247
Accrued interest receivable	0	0
FDIC indemnification asset	2,080	5,097
Investment in bank-owned life insurance	0	0
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Accrued interest payable	0	0
Interest rate swap derivative - cash flow hedge	0	0
Interest rate swap derivative - not designated	0	0
Interest Rate Swap | Not Designated as Hedging Instrument | Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap derivative - not designated	1,829	723
Interest Rate Swap | Not Designated as Hedging Instrument | Reported Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap derivative - not designated	1,829	723
Interest Rate Swap | Level 1 | Not Designated as Hedging Instrument
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap derivative - not designated	0	0
Interest Rate Swap | Level 2 | Not Designated as Hedging Instrument
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap derivative - not designated	1,829	723
Interest Rate Swap | Level 3 | Not Designated as Hedging Instrument
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap derivative - not designated	$ 0	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Fair Value Off Balance Sheet Risks (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments under unfunded loans and lines of credit	$ 904,773	$ 663,137
Letters of credit	16,560	6,607
Unused credit card lines	$ 0	$ 4,512

Commitments and Contingencies77

Commitments and Contingencies - Narrative (Details) $ in Millions	Sep. 30, 2015USD ($)
Commitments and Contingencies Disclosure [Abstract]
Commitment to Purchase Limited Partnership Interest	$ 10.8
Unfunded Commitment to Purchase Limited Partnership Interest	$ 7.1

Employee Benefits - Disclosure

Employee Benefits - Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options, Grants in Period, Gross | shares	57,037
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Granted (USD per share)	$ 8.11
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period (in shares) | shares	337,778
Exercised (in shares) | shares	206,140
Forfeited or expired (in shares) | shares	0
Outstanding, end of period (in shares) | shares	188,675
Exercisable at December 31, 2013 (in shares) | shares	188,651
Share options expected to vest (in shares) | shares	24
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period (in shares)	$ 11.37
Exercised (in shares)	11.83
Forfeited or expired (in shares)	0
Outstanding, end of period (in shares)	9.87
Exercisable at December 31, 2013 (in shares)	9.87
Share options expected to vest (in shares)	$ 4.77
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (dollars per shares)	2 years 11 months 24 days
Exercisable at December 31, 2013 (dollars per share)	2 years 11 months 24 days
Share options expected to vest (dollars per share)	1 day
Aggregate intrinsic value | $	$ 2,332
Exercisable at December 31, 2013 | $	2,332
Share options expected to vest | $	$ 0

Employee Benefits - Schedule of

Employee Benefits - Schedule of Nonvested Restricted Stock Units Activity (Details) - Restricted Stock	9 Months Ended
	Sep. 30, 2015$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock nonvested, beginning of period (in shares) | shares	601,268
Granted (in shares) | shares	39,000
Vested (in shares) | shares	(111,409)
Forfeited (in shares) | shares	(6,334)
Restricted stock nonvested, end of period (in shares) | shares	522,525
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted stock nonvested, beginning of period (dollars per share)	$ 14.90
Granted (dollars per share)	19.67
Vested (dollars per share)	13.24
Forfeited (dollars per share)	13.99
Restricted stock nonvested, end of period (dollars per share)	$ 15.62

Employee Benefits - Narrative (

Employee Benefits - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 0
Options, Grants in Period, Gross	57,037
Fair value of restricted stock, vested in period	$ 1,500,000
2006 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Rights issued	128,683
2013 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Options (in shares)	475,104
Shares available	880,970
KeySource Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Options (in shares)	107,408
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Options (in shares)	188,675		337,778
Employee Stock Option | KeySource Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available	35,607
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 2,000,000	$ 1,200,000
Compensation Cost Not yet Recognized	$ 6,400,000
Compensation Cost Not yet Recognized, Period for Recognition	2 years 3 months 30 days