BNC Bancorp (BNNC) 10-K 27 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Feb. 23, 2017	Jun. 30, 2016
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	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		52,208,260
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 978.9

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 79,815	$ 54,319
Interest-earning deposits in other banks	180,367	149,919
Investment securities available-for-sale, at fair value	579,124	490,140
Investment securities held-to-maturity, at amortized cost (fair value of $312,808 and $249,679 at December 31, 2016 and 2015, respectively)	317,662	244,417
Federal Home Loan Bank stock, at cost	13,180	8,171
Loans held for sale	43,731	39,470
Less allowance for loan losses	(37,501)	(31,647)
Loans	5,455,710	4,199,871
Net loans	5,418,209	4,168,224
Accrued interest receivable	22,020	18,055
Premises and equipment, net	166,496	112,968
Other real estate owned	26,489	32,561
FDIC indemnification asset	0	1,909
Investment in bank-owned life insurance	202,005	116,806
Goodwill and other intangible assets, net	260,680	152,985
Other assets	91,913	77,012
Total assets	7,401,691	5,666,956
Deposits:
Non-interest bearing demand	1,113,878	776,479
Interest-bearing demand	3,405,036	2,366,890
Time deposits	1,564,063	1,598,838
Total deposits	6,082,977	4,742,207
Short-term borrowings	168,304	103,212
Long-term debt	201,648	188,351
Accrued expenses and other liabilities	46,880	41,039
Total liabilities	6,499,809	5,074,809
Shareholders' equity:
Preferred stock, no par value; authorized 20,000,000 shares; 0 shares issued and outstanding at December 31, 2016 and 2015, respectively	0	0
Common stock, no par value; authorized 60,000,000 shares; 47,356,229 and 35,952,883 shares issued and outstanding at December 31, 2016 and 2015, respectively	709,935	448,728
Retained earnings	156,602	102,583
Stock in directors rabbi trust	(4,737)	(4,753)
Directors deferred fees obligation	4,737	4,753
Accumulated other comprehensive income	1,838	7,329
Total shareholders' equity	901,882	592,147
Total liabilities and shareholders' equity	7,401,691	5,666,956
Originated loans
Assets
Loans	3,645,687	2,721,216
Acquired loans
Assets
Loans	1,810,023	1,478,655
Common stock - nonvoting
Shareholders' equity:
Common stock, no par value; authorized 60,000,000 shares; 47,356,229 and 35,952,883 shares issued and outstanding at December 31, 2016 and 2015, respectively	33,507	33,507
BNC Bancorp
Assets
Cash and due from banks	30,808	39,888
Other assets	2,521	387
Total assets	1,017,150	715,888
Deposits:
Short-term borrowings	0	15,000
Long-term debt	115,021	108,207
Total liabilities	115,268	123,741
Shareholders' equity:
Common stock, no par value; authorized 60,000,000 shares; 47,356,229 and 35,952,883 shares issued and outstanding at December 31, 2016 and 2015, respectively	709,935	448,728
Retained earnings	156,602	102,583
Stock in directors rabbi trust	(4,737)	(4,753)
Directors deferred fees obligation	4,737	4,753
Accumulated other comprehensive income	1,838	7,329
Total shareholders' equity	901,882	592,147
Total liabilities and shareholders' equity	1,017,150	715,888
BNC Bancorp | Common stock - nonvoting
Shareholders' equity:
Common stock, no par value; authorized 60,000,000 shares; 47,356,229 and 35,952,883 shares issued and outstanding at December 31, 2016 and 2015, respectively	$ 33,507	$ 33,507

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Investment securities held-to-maturity	$ 312,808	$ 249,679
Preferred Stock, No Par Value	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	20,000,000	20,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	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 (in shares)	60,000,000	60,000,000
Common Stock, Shares, Issued (in shares)	47,356,229	35,952,883
Common Stock, Shares, Outstanding (in shares)	47,356,229	35,952,883
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 (in shares)	20,000,000	20,000,000
Common Stock, Shares, Issued (in shares)	4,820,844	4,820,844
Common Stock, Shares, Outstanding (in shares)	4,820,844	4,820,844

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest income:
Loans, including fees	$ 222,096	$ 178,726	$ 140,024
Investment securities:
Taxable	12,093	6,338	4,385
Tax-exempt	13,958	12,867	13,191
Interest-earning balances and other	1,038	555	542
Total interest income	249,185	198,486	158,142
Interest expense:
Demand deposits	14,730	8,243	5,859
Time deposits	13,769	12,204	9,280
Short-term borrowings	661	573	531
Long-term debt	6,861	5,664	4,256
Total interest expense	36,021	26,684	19,926
Net interest income	213,164	171,802	138,216
Provision for loan losses	4,665	1,896	7,006
Net interest income after provision for loan losses	208,499	169,906	131,210
Non-interest income:
Mortgage lending income	11,316	10,533	7,689
Service charges	10,324	8,079	6,105
Earnings on bank-owned life insurance	4,532	2,766	2,382
Gain (loss) on sale of investment securities, net	5	884	(511)
Other	12,307	10,186	9,357
Total non-interest income	38,484	32,448	25,022
Non-interest expense:
Salaries and employee benefits	86,168	72,519	62,232
Occupancy	13,565	11,802	9,153
Furniture and equipment	8,675	7,308	6,450
Data processing and supplies	6,572	5,019	4,007
Advertising and business development	3,156	2,635	2,666
Insurance, professional and other services	10,838	11,082	9,061
FDIC insurance assessments	4,111	3,144	2,932
Loan, foreclosure and other real estate owned expenses	5,041	9,852	8,945
Other	19,000	15,794	11,031
Total non-interest expense	157,126	139,155	116,477
Income before income tax expense	89,857	63,199	39,755
Income tax expense	26,944	18,749	10,365
Net income	$ 62,913	$ 44,450	$ 29,390
Earnings per common share
Basic earnings per common share (USD per share)	$ 1.40	$ 1.25	$ 1.01
Diluted earnings per common share (USD per share)	1.39	1.24	1.01
Dividends declared and paid per common share (USD per share)	$ 0.20	$ 0.20	$ 0.20

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 62,913	$ 44,450	$ 29,390
Investment securities:
Unrealized holding (losses) gains on investments securities available-for-sale	(7,510)	(2,117)	13,975
Tax effect	2,779	784	(5,171)
Reclassification of (gains) losses recognized in net income on sale of investment securities available-for-sale	(5)	(839)	366
Tax effect	1	310	(135)
Amortization of unrealized gains on investment securities transferred from available-for-sale to held-to-maturity	(1,729)	(797)	(829)
Tax effect	640	295	307
Net of tax amount	(5,824)	(2,364)	8,513
Cash flow hedging activities:
Unrealized holding gains (losses)	528	(777)	(3,053)
Tax effect	(195)	288	1,130
Reclassification of losses recognized in net income	0	0	457
Tax effect	0	0	(171)
Net of tax amount	333	(489)	(1,637)
Total other comprehensive (loss) income	(5,491)	(2,853)	6,876
Total comprehensive income	$ 57,422	$ 41,597	$ 36,266

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Acquisition of South Street Financial	Acquisition of Community First Financial	Acquisition of Harbor Bank Group	Acquisition of Southcoast Financial Corporation	Acquisition of High Point Bank Corporation	Preferred Stock	Common stock	Common stockAcquisition of South Street Financial	Common stockAcquisition of Community First Financial	Common stockAcquisition of Harbor Bank Group	Common stockAcquisition of Valley Financial Corporation	Common stockAcquisition of Southcoast Financial Corporation	Common stockAcquisition of High Point Bank Corporation	Common stockCommon stock - nonvoting	Retained earnings	Stock in directors rabbi trust	Directors deferred fees obligation	Accumulated other comprehensive income
Beginning balance, shares at Dec. 31, 2013							0	21,310,832							5,992,213
Beginning balance at Dec. 31, 2013	$ 271,330						$ 0	$ 181,684							$ 44,781	$ 41,559	$ (3,143)	$ 3,143	$ 3,306
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,390															29,390
Directors deferred fees	0																(286)	286
Other comprehensive income (loss), net of tax	6,876																		6,876
Common stock repurchased, shares															(300,000)
Common stock repurchased	(5,080)														$ (5,080)
Conversion of non-voting common stock to voting, shares								871,369							(871,369)
Conversion of non-voting common stock to voting	0							$ 6,194							$ (6,194)
Common stock issued pursuant to:
Acquisitions, shares									1,139,931	1,190,763	3,082,714
Acquisitions		$ 19,778	$ 20,128	$ 51,003					$ 19,778	$ 20,128	$ 51,003
Stock-based compensation, shares								160,781
Stock-based compensation	2,174							$ 2,174
Dividend reinvestment plan, shares								19,622
Dividend reinvestment plan	336							$ 336
Stock options exercised, shares								74,559
Stock options exercised	836							$ 836
Shares withheld for payment of taxes, shares								(35,676)
Shares withheld for payment of taxes	(597)							$ (597)
Shares traded to exercise stock options, shares								(37,158)
Shares traded to exercise stock options	(663)							$ (663)
Excess income tax benefit	615							$ 615
Cash dividends:
Common stock, $0.20 per share	(5,738)															(5,738)
Ending balance, shares at Dec. 31, 2014							0	27,777,737							4,820,844
Ending balance at Dec. 31, 2014	390,388						$ 0	$ 281,488							$ 33,507	65,211	(3,429)	3,429	10,182
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	44,450															44,450
Directors deferred fees	0																(1,324)	1,324
Other comprehensive income (loss), net of tax	(2,853)																		(2,853)
Common stock repurchased, shares								(200,000)
Common stock repurchased	(3,622)							$ (3,622)
Common stock issued pursuant to:
Acquisitions, shares												5,500,697
Acquisitions	108,700											$ 108,700
Public offering, shares								2,587,500
Public offering	57,563							$ 57,563
Stock-based compensation, shares								125,350
Stock-based compensation	2,667							$ 2,667
Dividend reinvestment plan, shares								15,413
Dividend reinvestment plan	301							$ 301
Stock options exercised, shares								242,244
Stock options exercised	2,823							$ 2,823
Shares withheld for payment of taxes, shares								(35,871)
Shares withheld for payment of taxes	(699)							$ (699)
Shares traded to exercise stock options, shares								(60,187)
Shares traded to exercise stock options	(1,047)							$ (1,047)
Excess income tax benefit	554							$ 554
Cash dividends:
Common stock, $0.20 per share	(7,078)															(7,078)
Ending balance, shares at Dec. 31, 2015							0	35,952,883							4,820,844
Ending balance at Dec. 31, 2015	592,147						$ 0	$ 448,728							$ 33,507	102,583	(4,753)	4,753	7,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	62,913															62,913
Directors deferred fees	0																16	(16)
Other comprehensive income (loss), net of tax	(5,491)																		(5,491)
Common stock issued pursuant to:
Acquisitions, shares													4,310,445	4,034,743
Acquisitions					$ 98,968	$ 98,882							$ 98,968	$ 98,882
Public offering, shares								2,875,000
Public offering	59,843							$ 59,843
Stock-based compensation, shares								133,725
Stock-based compensation	3,514							$ 3,514
Dividend reinvestment plan, shares								11,533
Dividend reinvestment plan	276							$ 276
Stock options exercised, shares								79,964
Stock options exercised	720							$ 720
Shares withheld for payment of taxes, shares								(42,064)
Shares withheld for payment of taxes	(996)							$ (996)
Cash dividends:
Common stock, $0.20 per share	(8,894)															(8,894)
Ending balance, shares at Dec. 31, 2016							0	47,356,229							4,820,844
Ending balance at Dec. 31, 2016	$ 901,882						$ 0	$ 709,935							$ 33,507	$ 156,602	$ (4,737)	$ 4,737	$ 1,838

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends, common stock (USD per share)	$ 0.20	$ 0.20	$ 0.20

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 62,913	$ 44,450	$ 29,390
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,665	1,896	7,006
Impairment of premises and equipment	413	0	0
Depreciation and amortization	7,139	6,663	6,158
Amortization of premiums, net	4,969	4,148	4,280
Amortization of intangible assets	4,915	3,965	2,340
Deferred income tax expense (benefit)	11,571	11,173	(51)
Accretion of fair value purchase accounting adjustments, net	(24,776)	(22,756)	(12,273)
Cash flow hedge expense	0	0	163
Stock-based compensation	3,514	2,667	2,174
Excess income tax benefit of share-based compensation	671	554	615
Deferred compensation	4,862	987	424
Earnings on bank-owned life insurance	(4,532)	(2,766)	(2,382)
(Gain) loss on sale of investment securities, net	(5)	(884)	511
Gain on disposal of premises and equipment	(492)	(322)	(31)
Losses on other real estate owned	833	5,192	4,329
Gain on sale of loans, net	(13,876)	(11,735)	(10,053)
Origination of loans held for sale	(357,845)	(363,510)	(286,855)
Proceeds from sales of loans held for sale	359,613	367,959	292,845
(Increase) decrease in accrued interest receivable	(3,965)	(835)	112
Payments received from FDIC under loss-share agreements	823	5,079	9,930
Payments received from FDIC upon termination of loss-share agreements	2,110	0	0
(Increase) decrease in other assets	(6,322)	(1,309)	1,664
(Decrease) increase in accrued expenses and other liabilities	(3,860)	3,817	(11,833)
Net cash provided by operating activities	53,338	54,433	38,463
Investing activities
Purchases of investment securities available-for-sale	(71,051)	(230,028)	(33,008)
Purchases of investment securities held-to-maturity	(70,746)	(22,618)	(5,269)
Proceeds from sales of investment securities available-for-sale	81,851	118,710	40,647
Proceeds from sales of investment securities held-to-maturity	0	648	8,651
Proceeds from maturities and payments of investment securities available-for-sale	75,455	37,596	39,138
Proceeds from maturities and payments of investment securities held-to-maturity	8,053	11,829	4,175
(Purchase) redemption of Federal Home Loan Bank stock	(581)	6,729	2,605
Proceeds from sale of loans held for sale previously classified as portfolio loans	0	6,576	0
Net increase in loans	(438,081)	(323,829)	(209,104)
Purchases of premises and equipment	(16,457)	(13,867)	(4,402)
Proceeds from disposal of premises and equipment	2,311	1,910	55
Investment in bank-owned life insurance	(39,348)	(760)	(248)
Investment in other real estate owned	(2,238)	(1,683)	(1,422)
Proceeds from sales of other real estate owned	12,899	21,475	32,870
Net cash received from (paid in) acquisitions	82,091	(11,132)	80,251
Net cash used in investing activities	(375,842)	(398,444)	(45,061)
Financing activities
Net increase in deposits	337,669	524,165	6,691
Net increase (decrease) in short-term borrowings	33,268	(110,513)	(70,713)
Net (decrease) increase in long-term-debt	(43,438)	1,162	58,332
Common stock repurchased	0	(3,622)	(5,081)
Issuance of common stock	59,843	57,563	0
Common stock issued from exercise of stock options, net of taxes	720	1,776	173
Common stock issued pursuant to dividend reinvestment plan	276	301	336
Common stock repurchased in lieu of income taxes	(996)	(699)	(598)
Cash dividends paid	(8,894)	(7,078)	(5,738)
Net cash provided by (used in) financing activities	378,448	463,055	(16,598)
Net increase (decrease) in cash and cash equivalents	55,944	119,044	(23,196)
Cash and cash equivalents, beginning of period	204,238	85,194	108,390
Cash and cash equivalents, end of period	260,182	204,238	85,194
Supplemental Statement of Cash Flows Disclosure
Interest paid	35,750	26,693	19,349
Income taxes paid	19,236	6,215	5,547
Summary of Noncash Investing and Financing Activities
Transfer of loans to other real estate owned	5,840	9,111	24,015
Transfer of loans held for sale to portfolio loans	5,144	4,051	15,112
FDIC indemnification asset decrease (increase), net	$ 27	$ 2,165	$ (233)

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS Acquisition of High Point On November 1, 2016, the Company completed the acquisition of High Point, pursuant to the terms of the Agreement and Plan of Merger dated November 13, 2015. A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by High Point Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 100,457 $ — $ 100,457 Investment securities available-for-sale 147,723 1,965 (1) 149,688 Loans 467,953 (8,392 ) (2) 459,561 Premises and equipment 20,691 3,338 (3) 24,029 Other real estate owned 176 — 176 Core deposit and other intangible assets — 9,469 (4) 9,469 Other assets 59,476 — 59,476 Total assets acquired 796,476 6,380 802,856 Liabilities Deposits (667,791 ) (112 ) (5) (667,903 ) Borrowings (18,664 ) (138 ) (6) (18,802 ) Other liabilities (15,875 ) (2,765 ) (7) (18,640 ) Total liabilities assumed (702,330 ) (3,015 ) (705,345 ) Net assets acquired $ 94,146 $ 3,365 97,511 Total consideration paid 141,264 Goodwill $ 43,753 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 estimated fair value of core deposit and other intangible assets. (5) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (6) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (7) Adjustment to reflect the estimated fair market value of certain leases, deferred income taxes, and other assumed liabilities. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (4,034,743 shares) $ 98,882 Cash payments to common shareholders 42,382 Total consideration paid $ 141,264 This acquisition expanded and further strengthened the Company's presence in the Greensboro, Winston-Salem, and High Point, North Carolina area and expanded the Company's product offerings to include trust and insurance services. 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 Southcoast On June 17, 2016, the Company completed the acquisition of Southcoast pursuant to the terms of the Agreement and Plan of Merger dated August 14, 2015, as amended. A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by Southcoast Fair Value Adjustments Recast Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 24,019 $ — $ — $ 24,019 Investment securities available-for-sale 30,607 (1,094 ) (1) 692 30,205 Loans 365,232 (9,233 ) (2) — 355,999 Premises and equipment 19,585 2,304 (3) — 21,889 Other real estate owned 306 — — 306 Core deposit intangible — 3,058 (4) — 3,058 Other assets 23,082 845 (5) (256 ) 23,671 Total assets acquired 462,831 (4,120 ) 436 459,147 Liabilities Deposits (335,924 ) (175 ) (6) — (336,099 ) Borrowings (69,300 ) (1,255 ) (7) — (70,555 ) Other liabilities (4,789 ) (91 ) (8) — (4,880 ) Total liabilities assumed (410,013 ) (1,521 ) — (411,534 ) Net assets acquired $ 52,818 $ (5,641 ) $ 436 47,613 Total consideration paid 98,970 Goodwill $ 51,357 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 and other assumed liabilities. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (4,310,445 shares) $ 98,968 Cash payments to common shareholders 2 Total consideration paid $ 98,970 This acquisition expanded and further strengthened the Company's presence in the Charleston, South Carolina metropolitan area and provided a low-cost base of core deposits. 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. During the third quarter of 2016, the Company revised its initial estimates and assumptions regarding the valuation of certain acquired investment securities and acquired deferred tax assets. Because such revision occurred during the first 12 months following the date of acquisition and was not the result of an event that occurred subsequent to the acquisition date, the Company has increased the goodwill recorded in the Southcoast acquisition by $0.4 million to reflect this change in estimate. The following table presents unaudited pro-forma information as if the acquisitions of High Point and Southcoast had occurred on January 1, 2016 under the 2016 “Pro-forma” column. In addition, the table presents unaudited pro-forma information as if the acquisition of High Point, Southcoast and Valley had occurred on January 1, 2015 under the 2015 “Pro-forma” column. 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 each 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 High Point, Southcoast, and Valley at the beginning of 2016 or 2015. Cost savings are also not reflected in the unaudited pro-forma amounts. Pro-forma for Year Ended December 31, Actual from acquisition date through December 31, 2016 2016 2015 (Dollars in thousands, except per share data) Net interest income $ 12,177 $ 245,266 $ 234,463 Non-interest income 677 47,133 50,248 Net income 2,927 73,482 54,856 Pro-forma earnings per share: Basic $ 1.46 $ 1.17 Diluted $ 1.45 $ 1.17 Acquisition of Certus branches On October 16, 2015, the Company completed the acquisition of the Certus branches, pursuant to the terms of the Purchase and Assumption Agreement dated June 1, 2015. A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by Certus Fair Value Adjustments Recast Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 1,297 $ — $ — $ 1,297 Loans 186,354 (3,283 ) (1) (2,774 ) 180,297 Premises and equipment 8,542 698 (2) — 9,240 Accrued interest receivable 443 — — 443 Core deposit intangible — 1,348 (3) — 1,348 Other assets 11 734 (4) (458 ) 287 Total assets acquired 196,647 (503 ) (3,232 ) 192,912 Liabilities Deposits (175,783 ) (260 ) (5 ) — (176,043 ) Other liabilities (119 ) (487 ) (6 ) — (606 ) Total liabilities assumed (175,902 ) (747 ) — (176,649 ) Net assets acquired $ 20,745 $ (1,250 ) $ (3,232 ) 16,263 Cash consideration paid 25,692 Goodwill $ 9,429 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 recording of core deposit intangible. (4) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (5) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (6) Adjustment to reflect the estimated fair market value of certain leases. This acquisition expanded and further strengthened the Company's presence in upstate South Carolina, provided a low-cost base of core deposits and provided an experienced in-market team that enhances our ability to grow in that market. 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. During the third quarter of 2016, the Company revised its initial estimates and assumptions regarding the valuation of certain acquired loans and acquired deferred tax assets. Because such revision occurred during the first 12 months following the date of acquisition and was not the result of an event that occurred subsequent to the acquisition date, the Company has increased the goodwill recorded in the acquisition of the Certus branches by $3.2 million to reflect this change in estimate. Acquisition of Valley On July 1, 2015, the Company completed the acquisition of Valley, 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 Recast 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) (616 ) 607,417 Premises and equipment 8,934 892 (3) — 9,826 Accrued interest receivable 2,263 — — 2,263 Other real estate owned 8,114 — (900 ) 7,214 Core deposit intangible — 6,964 (4) — 6,964 Other assets 31,297 3,641 (5) (225 ) 34,713 Total assets acquired 844,340 (5,272 ) (1,741 ) 837,327 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 $ 56,228 $ (6,268 ) $ (1,741 ) 48,219 Total consideration paid 108,700 Goodwill $ 60,481 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 common 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. During the second quarter of 2016, the Company revised its initial estimates and assumptions regarding the valuation of certain acquired loans, acquired other real estate owned, acquired other assets, and acquired deferred tax assets. Because such revision occurred during the first 12 months following the date of acquisition and was not the result of an event that occurred subsequent to the acquisition date, the Company has increased the goodwill recorded in the acquisition of Valley by $1.7 million to reflect this change in estimate. The Company incurred total transaction-related costs of $16.9 million , $13.3 million , and $9.0 million during the years ended December 31, 2016, 2015, and 2014, respectively. Transaction-related costs, which are expensed as incurred as a component of non-interest expense, primarily include, but are not limited to, severance costs, professional services, data processing fees, and marketing and advertising expenses. The Company has determined the above noted acquisitions each constitute a business combination as defined by 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 acquisition date.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization The Company was formed in 2002 to serve as a one-bank holding company for the Bank. The Bank is incorporated under the laws of the State of North Carolina and provides a wide range of banking services tailored to the particular banking needs of the communities we serve. The Bank is principally engaged in the business of attracting deposits from the general public and using those deposits, together with other funding from our lines of credit, to make commercial and consumer loans. The Bank also offers a wide range of banking services, including traditional products such as checking and savings accounts. The Bank conducts operations through 76 full-service banking offices, including 41 branches in North Carolina, 26 branches in South Carolina and nine branches in Virginia. Basis of Presentation The accompanying consolidated financial statements include the accounts and transactions of the Company and all significant intercompany transactions and balances have been eliminated in consolidation. 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 other intangible assets. Reclassifications Certain amounts in the 2015 consolidated financial statements have been reclassified to conform to the 2016 presentation. The reclassifications had no effect on net income, net income available to common shareholders or shareholders' equity as previously reported. Business Combinations The Company accounts for its business combinations using the acquisition method of accounting. This method requires the use of fair values in determining the carrying values of the purchased assets and assumed liabilities, which are recorded at fair value at acquisition date, and identifiable intangible assets are recorded at fair value. Costs directly related to the business combinations are recorded as expenses as they are incurred. Fair values are subject to adjustment for up to one year after the closing date of an acquisition as additional information relative to closing date fair values become available. Cash and Cash Equivalents For the purpose of presentation in the statements of cash flows, cash and cash equivalents include cash, deposits with other financial institutions, and federal funds sold. Federal regulations require financial institutions to set aside a specified amount as a reserve against transaction accounts and time deposits. At December 31, 2016 and 2015, the Company’s reserve requirement was $17.3 million and $9.9 million , respectively. Investment Securities Investment securities are classified as held-to-maturity or available-for-sale at the time of purchase. Investment securities classified as held-to-maturity, which management has the positive intent and ability to hold to maturity, are reported at amortized cost. Investment securities classified as available for sale, which management has the intent and ability to hold for an indefinite period of time, but not necessarily to maturity, are carried at fair value, with unrealized gains and losses, net of related deferred income taxes, included in shareholders’ equity as a separate component of other comprehensive income. Any decision to sell investment securities available for sale would be based on various factors, including, but not limited to, asset / liability management strategies, changes in interest rates or prepayment risks, liquidity needs, or regulatory capital considerations. Premiums are amortized and discounts accreted using the interest method over the remaining terms of the related securities. Dividend and interest income are recognized when earned. Sales of investment securities are recorded at trade date, with realized gains and losses on sales determined using the specific identification method and included in non-interest income. Transfers of investment securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in accumulated other comprehensive income and in the carrying value of the held-to-maturity securities. Such amounts are amortized over the remaining life of the security. The Company evaluates securities for other-than-temporary impairment ("OTTI") on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, the Company considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. The Company also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) OTTI related to credit loss, which must be recognized in the income statement and 2) other-than-temporary impairment (OTTI) related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings. Federal Home Loan Bank Stock As a member of the FHLB of Atlanta, the Company is required to maintain an investment in the stock of the FHLB based upon the amount of outstanding FHLB borrowings. This stock does not have a readily determinable fair value and is carried at cost. Loans and Leases Originated Loans and Leases Loans that management has the intent and ability to hold for the foreseeable future or until maturity are reported at their outstanding principal balances, adjusted for any charge-offs, unearned discounts, and unamortized fees and costs. Interest income on loans is accrued and credited to income based upon the principal amount outstanding. The net amount of nonrefundable loan origination fees and certain direct costs associated with the lending process are deferred and amortized to interest income over the contractual lives of the loans using methods that approximate the interest method. The Company classifies all loans and leases past due when the payment of principal and/or interest based upon contractual terms is greater than 30 days delinquent. When commercial loans are placed on nonaccrual status as described below, a charge-off is recorded, as applicable, to decrease the carrying value of such loans to the estimated fair value of the collateral securing the loan. Consumer loans are placed on nonaccrual status at a specified delinquency date consistent with regulatory guidelines. As such, consumer loans are subject to collateral valuation and charge-off, as applicable, when they are moved to nonaccrual status. The accrual of interest income for commercial loans is discontinued when there is a clear indication that the borrower’s cash flow may not be sufficient to meet payments as they become due, while the accrual of interest income for consumer loans is discontinued when loans reach specific delinquency levels. Acquired Loans Acquired loans are recorded at their fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased impaired or purchased non-impaired. Purchased impaired loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. For purchased impaired loans, expected cash flows at the acquisition date in excess of the fair value of loans are recorded as interest income over the life of the loans using a level yield method if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the acquisition date, increases in cash flows over those expected at the acquisition date are recognized prospectively as interest income. Decreases in expected cash flows after the acquisition date are recognized immediately through the provision for loan losses. For purchased non-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the economic life of the loans using a method that approximates the interest method. Loans Held for Sale The Company originates certain single family, residential first mortgage loans for sale on a presold basis and these loans are classified as loans held for sale. Loans held for sale are carried at the lower of cost or estimated fair value in the aggregate as determined by outstanding commitments from investors. Upon closing, these loans, together with their servicing rights, are sold to other financial institutions under prearranged terms on a best-efforts basis. Gains or losses on loan sales are recognized at the time of sale and are determined by the difference between net sales proceeds and the principal balance of the loans sold, adjusted for net deferred loan fees or costs. Loan origination and commitment fees, net of certain direct loan origination costs, are deferred as an adjustment to the carrying value of the loan until it is sold. The commitments to sell loans and the commitments to originate loans held for sale at a set interest rate, if originated, are considered derivatives under GAAP. The impact of the estimated fair value adjustment was not significant to the consolidated financial statements. Nonperforming Loans The Company considers a loan impaired, based on current information and events, if it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. All impaired loans are measured based on the present value of the expected future cash flows discounted at the loan's effective interest rate, the loan's observable market price, or at the fair value of the collateral if the loan is collateral dependent. The Company uses several factors in determining if a loan is impaired. Internal asset classification procedures include a thorough review of significant loans and lending relationships and include the accumulation of related data. This data includes loan payment status and the borrowers' financial data, cash flows, operating income or loss, and other factors. These discounted cash flow analyses incorporate adjustments to future cash flows that reflect management’s best estimate based on a combination of historical experience and management judgment. Loans are generally classified as nonaccrual if they are past due as to maturity or payment of principal or interest for a period of more than ninety ( 90 ) days, unless such loans are well-secured and in the process of collection. If a loan or a portion of a loan is classified as doubtful or is partially charged off, the loan is generally classified as nonaccrual. Loans that are on a current payment status or past due less than ninety ( 90 ) days may also be classified as nonaccrual if repayment in full of principal and/or interest is in doubt. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within an acceptable period of time and there is a sustained period of repayment performance (generally, a minimum of six months) by the borrower in accordance with the contractual terms of interest and principal. While a loan is classified as nonaccrual and the future collectability of the recorded loan balance is doubtful, collections of interest and principal are generally applied as a reduction to principal outstanding. When future collection of the recorded loan balance is expected, interest income may be recognized on a cash basis. In the case where a nonaccrual loan had been partially charged off, recognition of interest on a cash basis is limited to that which would have been recognized on the recorded loan balance at the contractual interest rate. Receipts in excess of that amount are recorded as recoveries to the allowance for loan losses until prior charge-offs have been fully recovered. Restructurings Modifications to a borrower’s debt agreement is considered a TDR if a concession is granted for economic or legal reasons related to a borrower’s financial difficulties that otherwise would not be considered. TDRs are undertaken in order to improve the likelihood of recovery on the loan and may take the form of modifications made with the stated interest rate lower than the current market rate for new debt with similar risk, modifications to the terms and conditions of the loan that fall outside of normal underwriting policies and procedures, or a combination of these modifications. Modifications of covered and other acquired loans that are part of a pool accounted for as a single asset are not considered TDRs. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accruing status, depending on the individual facts and circumstances of the borrower. Allowance for Loan and Lease Losses The allowance for loan and lease losses is a reserve for estimated credit losses on individually evaluated loans determined to be impaired as well as estimated credit losses inherent in the loan portfolio, and is based on quarterly evaluations of the collectability and historical loss experience of loans. Actual credit losses, net of recoveries, are deducted from the allowance for loan losses. A provision for loan losses, which is a charge against earnings, is recorded to bring the allowance for loan losses to a level that, in management’s judgment, is appropriate to absorb probable losses in the loan portfolio. All commercial loans that are originated by the Company are assigned risk grades based on an assessment of conditions that affect the borrower’s ability to meet contractual obligations under the loan agreement. This process includes reviewing borrowers’ financial information, historical payment experience, credit documentation, public information, and other information specific to each borrower. Loans with outstanding balances of $1 million or more, as well as all other loans included in such relationships, are reviewed on an annual basis. Loans with total committed exposure of $500,000 or more that are risk graded as Special Mention or worse are reviewed on a quarterly basis. All other loans are reviewed at any point management becomes aware of information affecting the borrower’s ability to fulfill their obligations. Accounting standards require the presentation of certain disclosure information at the portfolio segment level, which represents the level at which an entity develops and documents a systematic methodology to determine its allowance for loan losses. The Company concluded that its loan and lease portfolio comprises two portfolio segments: originated loans (which include purchased non-credit impaired loans) and purchased credit impaired loans. Originated loans include both commercial loans, which include commercial real estate, commercial construction, commercial and industrial and leases, and retail loans, which include residential construction, residential mortgage and consumer and other loans. The following provides a description of the Company’s accounting policies and methodologies related to each of its portfolio segments: Originated Loans The allowance for loan and lease losses consists of two components. This first component is the specific reserve, which is calculated on all individual loans in the following categories: nonperforming TDRs, commercial nonaccrual loans with net credit exposure of $250,000 or greater, and performing commercial and retail TDRs with net credit exposure of $250,000 or greater. If foreclosure is probable or the loan is collateral dependent, impairment is measured using the fair value of the loan’s collateral, less estimated costs to sell. If the loan is not considered collateral dependent, the amount of reserve is calculated based on the present value of expected cash flows discounted at the loan’s effective interest rate. Performing TDRs and nonaccrual loans, respectively, with net credit exposure less than $250,000 are pooled and evaluated for impairment in the aggregate. The second component of the allowance for loan and lease losses is the general reserve. For the commercial loan portfolio, the estimate of losses are based on pools of loans and leases with similar characteristics by applying a probability of default ("PD") factor and a loss-given default ("LGD") factor to each individual loan based on a regularly updated loan grade, using a standardized loan grading system. The PD factor and the LGD factor are determined for each loan grade using statistical models based on historical performance data. These reserve factors are developed based on credit migration models that track historical movements of loans between loan ratings over time and a combination of long-term average loss experience of our own portfolio and external industry data using a loss emergence period ranging from 18 to 23 months. In the case of more homogeneous portfolios, such as automobile loans, home equity loans, and residential mortgage loans, the determination of the transaction reserve also incorporates PD and LGD factors. The estimate of loss is based on pools of loans and leases with similar characteristics. The PD factor considers current number of days past due, which are then translated to a proxy risk grade, and this information is used to estimate expected losses over a 12 -month loss emergence period. The general reserve also includes a qualitative assessment of certain factors and the impact of changing market and economic conditions on portfolio performance. The qualitative assessment considers items unique to the Company's structure, policies, processes, and portfolio composition, as well as measurements and assessments of the loan portfolios including, but not limited to, management quality, concentrations, portfolio composition, industry comparisons, and internal review functions. For acquired loans that are not deemed credit impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value. Subsequent to the purchase date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans, however, the Company records a provision for loan losses only when the required allowance, net of any expected reimbursement under any loss-share agreements, exceeds any remaining credit discounts. The remaining differences between the purchase price and the unpaid principal balance at the date of acquisition are recorded in interest income over the economic life of the loans. Purchased Credit Impaired Loans The allowance for loan and lease losses related to purchased credit impaired loans is based on an analysis that is performed each period to estimate the expected cash flows for each of the loan pools. To the extent that the expected cash flows of a loan pool have decreased since the acquisition date, the Company establishes an allowance for loan losses. Foreclosed Assets Foreclosed assets are initially recorded at estimated fair value less cost to sell at the date of foreclosure, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy a loan through completion of a deed in lieu of foreclosure or through a similar arrangement. These assets are subsequently accounted for at the lower of cost or estimated fair value less costs to sell. Operating costs and changes in the valuation allowance are included in loan, foreclosure and OREO expenses as a component of non-interest expense. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Land is carried at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the respective assets, which are 40 years for buildings and 3 to 10 years for furniture, fixtures and equipment. Leasehold improvements are amortized over the terms of the respective leases or the estimated useful lives of the improvements, whichever is shorter. Repairs and maintenance costs are recorded as a component of non-interest expense as incurred. Bank-Owned Life Insurance The Company has purchased life insurance policies on certain current and past key employees and directors where the insurance policy benefits and ownership are retained by the employer. These policies are recorded at their cash surrender value. Income from these policies and changes in the net cash surrender value are recorded in non-interest income as earnings on bank-owned life insurance. The cash value accumulation is permanently tax deferred if the policy is held to the insured person’s death and certain other conditions are met. Goodwill and Other Intangible Assets The excess of the cost of an acquisition over the fair value of the net assets acquired consists primarily of goodwill, core deposit intangibles, and other identifiable intangibles (primarily related to customer relationships acquired). Other intangible assets, which consists of core deposit and acquired customer relationship intangible assets arising from whole bank and branch acquisitions, are amortized on an accelerated method over their estimated useful lives, which range from 7 to 10 years. The Company reviews long-lived assets and other intangible assets for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, in which case an impairment charge would be recorded. Goodwill is not amortized and is tested for impairment at least annually, or more frequently if events and circumstances exist that indicate that a goodwill impairment test should be performed. The impairment testing process is conducted by assigning net assets and goodwill to each reporting unit. An initial qualitative evaluation is made to assess the likelihood of impairment and determine whether further quantitative testing to calculate the fair value is necessary. When the qualitative evaluation indicates that impairment is more likely than not, quantitative testing is required whereby the fair value of each reporting unit is calculated and compared to the recorded book value. If the calculated fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and no further testing is considered necessary. If the carrying value of a reporting unit exceeds its calculated fair value, the impairment test continues by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying value of goodwill exceeds the implied fair value of goodwill. Derivatives The Company applies hedge accounting to certain interest rate derivatives entered into for risk management purposes. To qualify for hedge accounting, a derivative must be highly effective at reducing the risk associated with the exposure being hedged. In addition, key aspects of achieving hedge accounting are documentation of hedging strategy and hedge effectiveness at the hedge inception and substantiating hedge effectiveness on an ongoing basis. A derivative must be highly effective in accomplishing the hedge objective of offsetting changes in the cash flows of the hedged item for the risk being hedged. Any ineffectiveness in the hedge relationship is recognized in earnings. The effective portion of changes in the fair value of derivatives designated in a hedge relationship and that qualify as cash flow hedges is recorded in accumulated other comprehensive income, net of tax, and is subsequently reclassified into earnings in the period that the hedged transaction affects earnings. The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings. 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 are excluded from the computation of dilutive earnings per share in the periods in which the effect would be anti-dilutive. Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences between financial statement carrying amounts and the tax bases of existing assets and liabilities that will result in taxable or deductible amounts in future years. These temporary differences are multiplied by the enacted income tax rate expected to be in effect when the taxes become payable or receivable. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced, if necessary, by the amount of such benefits that are not expected to be realized based on available evidence. Operating Segments The Company’s chief operating decision maker primarily manages operations and assesses financial performance on a Company-wide basis. However, in addition to the discrete financial information that is provided for the Company as a whole, financial information is also provided for the wealth management services, insurance services, and mortgage origination segments, respectively. While the chief operating decision maker uses the financial information related to these segments to analyze business performance and allocate resources, these segments do not meet the quantitative threshold under GAAP to be considered a reportable segment. As such, these operating segments, along with the banking operations segment, are aggregated into a single reportable operating segment in the Consolidated Financial Statements. No revenues are derived from foreign countries or from external customers that comprise more than 10% of the Company’s revenues. Stock Compensation Plans The Company follows the provisions of the authoritative guidance regarding share-based compensation. This guidance values share-based awards at the grant date fair value and recognizes the expense over the requisite service period. Recently Adopted and Issued Accounting Standards In November 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash . This ASU clarifies certain existing principles in ASC Topic 230, including providing additional guidance related to transfers between cash and restricted cash and how entities present, in their statement of cash flows, the cash receipts and cash payments that directly affect the restricted cash accounts. For public companies, ASU 2016-18 is effective for fiscal years beginning after December 15, 2017, 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 June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . The ASU requires an organization to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances. Additionally, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For public companies, this ASU will be effective for interim and annual periods beginning after December 15, 2019. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , which simplifies several aspects of the accounting for share-based payment award transactions including the income tax consequences, the classification of awards as either equity or liabilities, and the classification on the statement of cash flows. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016 and interim periods within those annual periods. Early adoption is permitted. The Company elected to early adopt ASU 2016-09 in the second quarter of 2016 with an effective date of January 1, 2016. As a result of the adoption, the Company recognized excess tax benefits of $0.7 million in the Consolidated Statements of Income and Consolidated Statements of Cash Flows, respectively, for the year ended December 31, 2016. Prior periods have not been adjusted. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which will require lessees to record an asset on the balance sheet for the right to use the leased asset and a liability for the corresponding lease obligation for leases with terms of more than 12 months. The accounting treatment for lessors will remain relatively unchanged. The ASU also requires additional qualitative and quantitative disclosures related to the nature, timing and uncertainty of cash flows arising from leases. ASU 2016

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
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: Year Ended December 31, 2016 2015 2014 (Dollars in thousands, except per share amounts) Net income $ 62,913 $ 44,450 $ 29,390 Weighted average common shares - basic 45,095,976 35,691,059 29,049,525 Add: Effect of dilutive Stock Rights 88,935 91,187 102,352 Weighted average common shares - diluted 45,184,911 35,782,246 29,151,877 Basic earnings per common share $ 1.40 $ 1.25 $ 1.01 Diluted earnings per common share $ 1.39 $ 1.24 $ 1.01 For the years ended December 31, 2016 , 2015, and 2014, respectively, there were no shares of Stock Rights excluded in computing diluted common shares outstanding.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 25,610 $ 118 $ 334 $ 25,394 State and municipals 205,488 4,574 1,357 208,705 Corporate debt securities 50,440 523 125 50,838 Asset-backed debt securities 164,497 342 1,088 163,751 Equity securities 15,448 87 — 15,535 Mortgage-backed securities: Residential government sponsored 115,933 241 2,225 113,949 Other government sponsored 927 25 — 952 $ 578,343 $ 5,910 $ 5,129 $ 579,124 Held-to-maturity: State and municipals $ 295,573 $ 2,613 $ 8,064 $ 290,122 Corporate debt securities 22,089 597 — 22,686 $ 317,662 $ 3,210 $ 8,064 $ 312,808 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2015 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 12,025 $ 302 $ — $ 12,327 State and municipals 169,907 10,711 — 180,618 Corporate debt securities 48,392 — 689 47,703 Asset-backed debt securities 140,773 15 2,041 138,747 Equity securities 11,520 270 517 11,273 Mortgage-backed securities: Residential government sponsored 97,611 562 396 97,777 Other government sponsored 1,616 79 — 1,695 $ 481,844 $ 11,939 $ 3,643 $ 490,140 Held-to-maturity: State and municipals $ 228,417 $ 6,698 $ 477 $ 234,638 Corporate debt securities 16,000 1 960 15,041 $ 244,417 $ 6,699 $ 1,437 $ 249,679 The amortized cost and estimated fair value of investment securities at December 31, 2016 , 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 Available-for-sale: (Dollars in thousands) Due after one through five years $ 31,564 $ 31,563 Due after five through ten years 128,057 127,999 Due after ten years 403,274 404,027 Total debt securities 562,895 563,589 Equity securities 15,448 15,535 $ 578,343 $ 579,124 Held-to-maturity: Due after one year through five years $ 16,032 $ 15,996 Due after five through ten years 41,722 42,028 Due after ten years 259,908 254,784 $ 317,662 $ 312,808 At December 31, 2016 and 2015, respectively, investment securities with an estimated fair value of approximately $372.4 million and $371.8 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: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Proceeds from sales $ 81,851 $ 119,358 $ 49,298 Gross realized gains on sales $ 596 $ 939 $ 481 Gross realized losses on sales (591 ) (55 ) (992 ) Total realized gains (losses), net $ 5 $ 884 $ (511 ) During the year ended December 31, 2015, the Company sold $0.6 million of state and municipal debt obligations that were classified as held-to-maturity due to a downgrade in the credit rating of securities and concerns related to 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 an immaterial gain on this sale. During the year ended December 31, 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. 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 December 31, 2016 (Dollars in thousands) Available-for-sale: State and municipals 134 $ 89,604 $ 1,357 — $ — $ — $ 89,604 $ 1,357 Mortgage-backed securities 58 102,459 2,123 2 2,519 102 104,978 2,225 Asset-backed debt securities 9 33,888 119 17 60,255 969 94,143 1,088 U.S. Government agencies 8 14,830 334 — — — 14,830 334 Corporate debt securities 3 16,755 121 1 4,325 4 21,080 125 212 $ 257,536 $ 4,054 20 $ 67,099 $ 1,075 $ 324,635 $ 5,129 Held-to-maturity: State and municipals 145 $ 169,782 $ 7,767 7 $ 5,645 $ 297 $ 175,427 $ 8,064 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, 2015 (Dollars in thousands) Available-for-sale: Corporate debt securities 6 $ 29,015 $ 658 1 $ 2,969 $ 31 $ 31,984 $ 689 Asset-backed debt securities 29 114,305 1,726 1 4,486 315 118,791 2,041 Equity securities 1 5,200 175 1 637 342 5,837 517 Mortgage-backed securities 20 66,175 327 3 3,432 69 69,607 396 56 $ 214,695 $ 2,886 6 $ 11,524 $ 757 $ 226,219 $ 3,643 Held-to-maturity: State and municipals 13 $ 20,658 $ 210 20 $ 17,072 $ 267 $ 37,730 $ 477 Corporate debt securities — — — 1 3,040 960 3,040 960 13 $ 20,658 $ 210 21 $ 20,112 $ 1,227 $ 40,770 $ 1,437 The Company reviews the investment securities portfolio on a quarterly basis to monitor its exposure to other-than-temporary impairment. A determination as to whether a security’s decline in fair value is other-than-temporary takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors the Company may consider in the other-than-temporary impairment analysis include the length of time and extent to which the security has been in an unrealized loss position, changes in security ratings, financial condition and near-term prospects of the issuer, as well as security and industry specific economic conditions. Based on this evaluation, the Company does not believe any unrealized loss at December 31, 2016 represents an other-than-temporary impairment, as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions, and not credit deterioration. The Company has concluded there are no concerns about the long-term viability of the issuers of these securities and the Company currently does not intend to sell, nor does it believe that it will be required to sell, these securities before recovery of their amortized cost basis.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans and Allowance for Loan Losses	LOANS AND ALLOWANCE FOR LOAN LOSSES Major categories of loans are presented below: December 31, 2016 2015 Originated Acquired (1) Total Originated Acquired (1) Total (Dollars in thousands) Commercial real estate $ 2,076,834 $ 820,886 $ 2,897,720 $ 1,575,555 $ 670,460 $ 2,246,015 Commercial construction 459,398 103,821 563,219 281,591 83,418 365,009 Commercial and industrial 369,287 131,974 501,261 279,495 139,621 419,116 Leases 29,529 — 29,529 26,773 — 26,773 Total commercial 2,935,048 1,056,681 3,991,729 2,163,414 893,499 3,056,913 Residential construction 93,202 21,613 114,815 59,937 16,084 76,021 Residential mortgage 599,666 725,774 1,325,440 484,895 563,563 1,048,458 Consumer and other 17,771 5,955 23,726 12,970 5,509 18,479 Total portfolio loans $ 3,645,687 $ 1,810,023 $ 5,455,710 $ 2,721,216 $ 1,478,655 $ 4,199,871 (1) Amount includes $0 and $40.9 million of acquired loans covered under FDIC loss-share agreements at December 31, 2016 and 2015, respectively. The unpaid principal balance for acquired loans covered under FDIC loss-share agreements was $0 and $41.4 million at December 31, 2016 and 2015, respectively. Unearned income and net deferred loan fees totaled $0.6 million and $0.9 million at December 31, 2016 and 2015, respectively. On May 2, 2016, the Bank entered into an agreement with the FDIC to terminate all existing loss-share agreements with the FDIC. All rights and obligations of the Bank and the FDIC under the FDIC loss share agreements, including the clawback provisions and the settlement of loss share and expense reimbursement claims, were resolved and terminated under such agreement. The Company evaluates loans acquired with evidence of credit deterioration in accordance with the provisions of 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 year ended December 31, 2016, at acquisition date, accounted for under ASC 310-30: (Dollars in thousands) Contractually required payments receivable $ 30,484 Contractual cash flows not expected to be collected (non-accretable) (4,927 ) Expected cash flows 25,557 Interest component of expected cash flows (1,110 ) Fair value of loans acquired $ 24,447 The acquisition date unpaid balance of loans acquired during the year ended December 31, 2016 that did not have credit deterioration was $808.5 million with an estimated fair value of $791.1 million . The discount will be amortized on a level-yield basis over the economic life of the loans. The following table presents a summary of the activity of the Company's loans accounted for under ASC 310-30: Year Ended December 31, 2016 2015 (Dollars in thousands) Balance at beginning of period $ 142,671 $ 150,382 Purchased loans acquired 24,447 28,803 Accretion 4,394 5,311 Transfer to other real estate owned (3,254 ) (2,455 ) Net payments received (40,460 ) (36,359 ) Net charge-offs (574 ) (781 ) Other activity, net 335 (2,230 ) Balance at end of period $ 127,559 $ 142,671 The following table presents a summary of changes in accretable difference on purchased loans accounted for under ASC 310-30: Year Ended December 31, 2016 2015 (Dollars in thousands) Balance at beginning of period $ 2,853 $ 4,418 Accretion (4,394 ) (5,311 ) Accretable difference acquired 1,110 601 Adjustments to accretable difference due to: Loans sold — (483 ) Changes in expected future cash flows 3,491 3,628 Balance at end of period $ 3,060 $ 2,853 The Company has the ability to borrow funds from the Federal Home Loan Bank of Atlanta ("FHLB") and from the Federal Reserve Bank of Richmond (the "Federal Reserve"). At December 31, 2016 and 2015, real estate loans with carrying values of $2.25 billion and $1.68 billion , respectively, were pledged to secure borrowing facilities from these institutions. The Company has loan relationships with its directors, executive officers, or their related interests. These loans were made on substantially the same terms, including rates and collateral, as those prevailing at the time for comparable transactions with other unrelated customers, and do not involve more than a normal risk of collection. Loan activity with principal officers, directors, and their affiliates during 2016 was as follows: (Dollars in thousands) Balance at beginning of year $ 18,059 Additional borrowings 41,428 Loan repayments (32,423) Balance at end of year $ 27,064 A summary of the changes to the allowance for loan losses, by class of financing receivable, is presented below: For the year ended December 31, 2016 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balance December 31, 2015 $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 Charge-offs (969 ) (89 ) (1,400 ) — — (722 ) (147 ) (3,327 ) Recoveries 768 1,049 852 — 53 1,645 97 4,464 Provision (1) 2,375 542 1,483 177 248 (217 ) 57 4,665 Change in FDIC indemnification asset (1) (4 ) (106 ) (31 ) — — 216 (23 ) 52 Balance December 31, 2016 $ 15,641 $ 5,921 $ 5,490 $ 255 $ 767 $ 9,123 $ 304 $ 37,501 For the year ended December 31, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balance December 31, 2014 $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Charge-offs (2,366 ) (127 ) (285 ) — — (2,228 ) (362 ) (5,368 ) Recoveries 1,013 1,859 1,339 — 117 1,234 232 5,794 Provision (2) 2,087 (1,220 ) 486 (25 ) (224 ) 543 249 1,896 Change in FDIC indemnification asset (2) 52 (298 ) (180 ) — 3 (661 ) 10 (1,074 ) Balance December 31, 2015 $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 (1) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.5) million for the year ended December 31, 2016. For the year ended December 31, 2016, this resulted in an increase in the FDIC indemnification asset of $0.1 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 $0.6 million . (2) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.4) million for the year ended December 31, 2015 . For the year ended December 31, 2015, this resulted in a decrease in the FDIC indemnification asset of $1.1 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 $1.5 million . 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 Balances at December 31, 2016: (Dollars in thousands) Specific reserves: Impaired loans $ 607 $ 147 $ 365 $ — $ — $ 1,255 $ 1 $ 2,375 Purchase credit impaired loans 811 321 37 — 146 1,084 2 2,401 Total specific reserves 1,418 468 402 — 146 2,339 3 4,776 General reserves 14,223 5,453 5,088 255 621 6,784 301 32,725 Total $ 15,641 $ 5,921 $ 5,490 $ 255 $ 767 $ 9,123 $ 304 $ 37,501 Loans: Individually evaluated for impairment $ 19,602 $ 3,145 $ 1,844 $ — $ — $ 14,738 $ 9 $ 39,338 Purchase credit impaired loans 73,515 11,556 1,999 — 501 39,881 107 127,559 Loans collectively evaluated for impairment 2,804,603 548,518 497,418 29,529 114,314 1,270,821 23,610 5,288,813 Total $ 2,897,720 $ 563,219 $ 501,261 $ 29,529 $ 114,815 $ 1,325,440 $ 23,726 $ 5,455,710 Balances at December 31, 2015: Specific reserves: Impaired loans $ 2,166 $ 182 $ 646 $ — $ 53 $ 1,562 $ 49 $ 4,658 Purchase credit impaired loans 1,176 354 47 — 5 971 6 2,559 Total specific reserves 3,342 536 693 — 58 2,533 55 7,217 General reserves 10,129 3,989 3,893 78 408 5,668 265 24,430 Total $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 Loans: Individually evaluated for impairment $ 26,498 $ 3,223 $ 1,687 $ — $ 825 $ 18,158 $ 129 $ 50,520 Purchase credit impaired loans 85,213 12,497 2,717 — 709 41,336 199 142,671 Loans collectively evaluated for impairment 2,134,304 349,289 414,712 26,773 74,487 988,964 18,151 4,006,680 Total $ 2,246,015 $ 365,009 $ 419,116 $ 26,773 $ 76,021 $ 1,048,458 $ 18,479 $ 4,199,871 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 December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 7,230 $ 7,208 $ 448 $ 10,040 $ 9,993 Commercial construction 1,247 1,244 102 1,295 1,293 Commercial and industrial 1,214 1,209 265 397 396 Residential mortgage 4,921 4,885 482 4,275 4,271 Consumer and other 8 8 1 — — Total originated 14,620 14,554 1,298 16,007 15,953 Acquired: Commercial real estate 1,179 1,192 159 1,224 1,236 Commercial construction 264 278 45 343 343 Commercial and industrial 235 392 100 1 — Residential mortgage 3,913 4,396 773 1,649 1,677 Consumer and other — 6 — — — Total acquired 5,591 6,264 1,077 3,217 3,256 Total impaired loans $ 20,211 $ 20,818 $ 2,375 $ 19,224 $ 19,209 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, 2015 (Dollars in thousands) Originated: Commercial real estate $ 11,750 $ 11,736 $ 1,990 $ 13,099 $ 13,068 Commercial construction 1,537 1,533 123 1,325 1,320 Commercial and industrial 1,459 1,451 575 — — Residential construction 343 342 42 306 306 Residential mortgage 8,159 8,141 860 2,154 2,145 Consumer and other 10 10 1 — — Total originated 23,258 23,213 3,591 16,884 16,839 Acquired: Commercial real estate 1,374 1,390 175 330 331 Commercial construction 369 370 59 — — Commercial and industrial 232 304 71 — — Residential construction 109 109 11 68 588 Residential mortgage 5,302 5,632 702 2,572 2,597 Consumer and other 119 119 49 — — Total acquired 7,505 7,924 1,067 2,970 3,516 Total impaired loans $ 30,763 $ 31,137 $ 4,658 $ 19,854 $ 20,355 The following table presents information related to the average recorded investment and interest income recognized on impaired loans, excluding purchased impaired loans: Year Ended December 31, 2016 2015 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Impaired loans with allowance: (Dollars in thousands) Commercial real estate $ 10,356 $ 357 $ 12,060 $ 395 Commercial construction 1,494 43 1,765 71 Commercial and industrial 1,679 56 1,405 58 Residential construction 369 5 415 14 Residential mortgage 10,988 248 9,477 186 Consumer and other 28 — 51 — Total impaired loans with allowance $ 24,914 $ 709 $ 25,173 $ 724 Impaired loans with no allowance: Commercial real estate $ 13,887 $ 428 $ 18,477 $ 524 Commercial construction 1,820 562 2,111 59 Commercial and industrial 464 — 509 — Residential construction 68 — 118 33 Residential mortgage 6,041 42 10,262 47 Consumer and other 20 — 44 — Total impaired loans with no allowance $ 22,300 $ 1,032 $ 31,521 $ 663 For the years ended December 31, 2016 and 2015 , the amount of interest income recognized within the period that the loans were impaired was primarily related to loans modified as 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 December 31, 2016 and 2015, respectively, the Company had $1.3 million and $2.5 million 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: Current 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Loans December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 2,074,100 $ 573 $ 504 $ — $ 1,657 $ 2,076,834 Commercial construction 458,576 387 — — 435 459,398 Commercial and industrial 368,025 490 — — 772 369,287 Leases 29,529 — — — — 29,529 Residential construction 92,784 418 — — — 93,202 Residential mortgage 592,975 2,368 425 115 3,783 599,666 Consumer and other 17,644 102 25 — — 17,771 Total originated 3,633,633 4,338 954 115 6,647 3,645,687 Acquired: Commercial real estate 814,277 2,816 1,556 — 2,237 820,886 Commercial construction 102,727 294 90 — 710 103,821 Commercial and industrial 130,937 713 161 — 163 131,974 Residential construction 21,613 — — — — 21,613 Residential mortgage 714,386 5,473 1,036 — 4,879 725,774 Consumer and other 5,903 47 5 — — 5,955 Total acquired 1,789,843 9,343 2,848 — 7,989 1,810,023 Total loans $ 5,423,476 $ 13,681 $ 3,802 $ 115 $ 14,636 $ 5,455,710 Current 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Loans December 31, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,571,034 $ 800 $ 564 $ — $ 3,157 $ 1,575,555 Commercial construction 281,345 82 — — 164 281,591 Commercial and industrial 279,116 89 21 — 269 279,495 Leases 26,773 — — — — 26,773 Residential construction 59,631 — — — 306 59,937 Residential mortgage 480,251 1,714 203 — 2,727 484,895 Consumer and other 12,958 12 — — — 12,970 Total originated 2,711,108 2,697 788 — 6,623 2,721,216 Acquired: Commercial real estate 664,153 893 1,139 — 4,275 670,460 Commercial construction 82,994 10 20 — 394 83,418 Commercial and industrial 139,130 69 250 3 169 139,621 Residential construction 15,891 — 16 — 177 16,084 Residential mortgage 552,348 3,266 1,010 — 6,939 563,563 Consumer and other 5,295 77 5 — 132 5,509 Total acquired 1,459,811 4,315 2,440 3 12,086 1,478,655 Total loans $ 4,170,919 $ 7,012 $ 3,228 $ 3 $ 18,709 $ 4,199,871 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 December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 2,004,386 $ 55,028 $ 17,420 $ — $ — $ 2,076,834 Commercial construction 451,314 5,354 2,730 — — 459,398 Commercial and industrial 363,028 3,209 3,050 — — 369,287 Leases 29,486 43 — — — 29,529 Residential construction 92,831 371 — — — 93,202 Residential mortgage 568,875 21,669 9,122 — — 599,666 Consumer and other 17,426 336 9 — — 17,771 Total originated 3,527,346 86,010 32,331 — — 3,645,687 Acquired: Commercial real estate 755,908 31,145 33,629 204 — 820,886 Commercial construction 87,857 6,867 8,994 103 — 103,821 Commercial and industrial 122,637 3,170 6,167 — — 131,974 Residential construction 20,912 — 701 — — 21,613 Residential mortgage 670,683 37,181 17,747 163 — 725,774 Consumer and other 5,875 80 — — — 5,955 Total acquired 1,663,872 78,443 67,238 470 — 1,810,023 Total loans $ 5,191,218 $ 164,453 $ 99,569 $ 470 $ — $ 5,455,710 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,499,554 $ 48,775 $ 27,226 $ — $ — $ 1,575,555 Commercial construction 272,960 6,434 2,197 — — 281,591 Commercial and industrial 270,116 4,855 4,524 — — 279,495 Leases 26,773 — — — — 26,773 Residential construction 59,265 24 648 — — 59,937 Residential mortgage 453,544 20,440 10,911 — — 484,895 Consumer and other 12,566 394 10 — — 12,970 Total originated 2,594,778 80,922 45,516 — — 2,721,216 Acquired: Commercial real estate 596,973 31,318 42,169 — — 670,460 Commercial construction 69,473 5,655 8,163 127 — 83,418 Commercial and industrial 127,911 3,273 8,437 — — 139,621 Residential construction 14,541 470 1,073 — — 16,084 Residential mortgage 504,836 38,763 19,716 248 — 563,563 Consumer and other 5,244 133 132 — — 5,509 Total acquired 1,318,978 79,612 79,690 375 — 1,478,655 Total loans $ 3,913,756 $ 160,534 $ 125,206 $ 375 $ — $ 4,199,871 Modifications Loan modifications are considered a 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 TDRs, 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 December 31, 2016 (Dollars in thousands) Commercial real estate $ 2,048 $ 173 $ 2,221 $ 125 Commercial construction 765 — 765 — Commercial and industrial 379 — 379 37 Residential mortgage 4,492 — 4,492 286 Consumer and other 9 — 9 1 Total modifications $ 7,693 $ 173 $ 7,866 $ 449 Number of contracts 25 4 29 Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated December 31, 2015 (Dollars in thousands) Commercial real estate $ 5,938 $ 720 $ 6,658 $ 331 Commercial construction 893 46 939 16 Commercial and industrial 1,186 — 1,186 484 Residential mortgage 6,691 14 6,705 1 Consumer and other 10 — 10 564 Total modifications $ 14,718 $ 780 $ 15,498 $ 1,396 Number of contracts 35 3 38 At December 31, 2016 and 2015, respectively, 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. Payment modification – A modification in which the principal and interest payment are lowered from the original contractual terms. Interest only modification – A modification in which the loan is converted to interest only payments for a period of time. 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. Year Ended December 31, 2016 2015 Term Payment Interest Only Total Term Payment Interest Only Combination Total (Dollars in thousands) Commercial real estate $ — $ 314 $ 261 $ 575 $ 1,820 $ — $ 358 $ 863 $ 3,041 Commercial and industrial 433 — — 433 93 419 231 — 743 Residential mortgage — — 271 271 149 — — — 149 Total modifications $ 433 $ 314 $ 532 $ 1,279 $ 2,062 $ 419 $ 589 $ 863 $ 3,933 The amount of loans modified and classified as TDRs in the previous twelve months that defaulted during the years ended December 31, 2016 and 2015, respectively, were immaterial. The Company defines payment default as movement of the restructuring to nonaccrual status, foreclosure or charge-off, whichever occurs first. 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: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Loans held for sale at period end $ 43,731 $ 39,470 $ 37,280 Proceeds from sales of mortgage loans originated for sale 359,613 367,959 292,845 Gain on sales of mortgage loans originated for sale 10,506 9,825 8,037

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS The following table presents activity for goodwill and other intangible assets: Goodwill Other Intangibles Total (Dollars in thousands) Balance at December 31, 2014 $ 69,749 $ 13,952 $ 83,701 Acquisitions 64,937 8,312 73,249 Amortization — (3,965 ) (3,965 ) Balance at December 31, 2015 134,686 18,299 152,985 Acquisitions 95,110 12,527 107,637 Amortization — (4,915 ) (4,915 ) Purchase price allocation recast - Valley 1,741 — 1,741 Purchase price allocation recast - Certus branches 3,232 — 3,232 Balance at December 31, 2016 $ 234,769 $ 25,911 $ 260,680 The Company has identified two reporting units for purposes of testing goodwill for impairment. These reporting units are the mortgage origination unit, which originates certain single family residential first mortgage loans that are subsequently sold into the secondary market, and the banking operations unit, which contains all other activities performed by the Company. All goodwill is allocated to the banking operations reporting unit. The Company conducted its annual impairment testing as of June 30, 2016 utilizing a qualitative assessment. Based on this assessment, management concluded that it is more likely than not that the estimated fair value of the banking operations reporting unit exceeded the carrying value (including goodwill) of this reporting unit. Therefore, a step one quantitative analysis was not required. There were no events since the June 2016 impairment test that have changed the Company's impairment assessment conclusion. There were no impairment charges recorded during the years ended December 31, 2016, 2015, or 2014, respectively. The following table presents the gross carrying amount and accumulated amortization for the Company’s other intangible assets, which primarily consists of core deposit intangibles and also includes customer relationship intangibles acquired in connection with the acquisition of High Point: December 31, 2016 2015 (Dollars in thousands) Gross carrying amount $ 40,463 $ 27,936 Accumulated amortization (14,552 ) (9,637 ) Net book value $ 25,911 $ 18,299 At December 31, 2016, the weighted-average remaining life of the Company's other intangible assets was 5.71 years . The following table presents estimated future amortization expense for other intangible assets: (Dollars in thousands) 2017 $ 5,924 2018 5,408 2019 4,899 2020 4,126 2021 2,830 Thereafter 2,724 Total $ 25,911

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Premises and Equipment	PREMISES AND EQUIPMENT The following table presents a summary of the Company’s premises and equipment: December 31, 2016 2015 (Dollars in thousands) Land and land improvements $ 52,259 $ 35,731 Buildings and leasehold improvements 105,479 73,192 Furniture, fixtures and equipment 35,828 28,858 Construction in progress 6,828 2,879 Premises and equipment, gross 200,394 140,660 Less accumulated depreciation and amortization (33,898 ) (27,692 ) Premises and equipment, net $ 166,496 $ 112,968 Depreciation and amortization expense for the years ended December 31, 2016, 2015, and 2014 amounted to $6.6 million , $6.1 million and $5.3 million , respectively. Premises and equipment are evaluated for potential impairment if events or changes in circumstances indicate the carrying value of an asset may not be recoverable. During the year ended December 31, 2016, the Company recorded a $0.4 million asset impairment charge related to the closing of a branch and a loan production office in South Carolina. This expense was recorded as a component of other non-interest expense on the Consolidated Statement of Income. The Company has entered into various non-cancellable operating leases for land and buildings used in its operations that expire at various dates through 2033. Most of the leases contain renewal options and certain leases provide for periodic rate negotiation or escalation. The leases generally provide for payment of property taxes, insurance and maintenance costs by the Company. Rental expense, including month-to-month leases, reported in non-interest expense was $5.7 million , $5.5 million and $3.8 million for the years ended December 31, 2016, 2015, and 2014, respectively. At December 31, 2016, future minimum rental commitments under non-cancellable operating leases are as follows: (Dollars in thousands) 2017 $ 5,460 2018 4,852 2019 4,253 2020 3,285 2021 3,040 Thereafter 14,393 Total $ 35,283

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2016
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. The following table presents the fair value of the Company’s derivatives: December 31, 2016 2015 Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Derivative assets: (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps $ 70,777 Other assets $ 1,224 $ 63,320 Other assets $ 1,332 Derivative liabilities: Derivatives designated as hedging instruments: Interest rate swap $ 125,000 Accrued expenses and other liabilities $ 557 $ 125,000 Accrued expenses and other liabilities $ 1,085 Derivatives not designated as hedging instruments: Interest rate swaps $ 70,777 Accrued expenses and other liabilities $ 1,224 $ 63,320 Accrued expenses and other liabilities $ 1,332 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 December 31, 2016 (Dollars in thousands) Derivative assets $ 1,224 $ — $ 1,224 $ — $ — $ 2,679 Derivative liabilities 1,781 — 1,781 — 1,781 — Total derivative instruments $ 3,005 $ — $ 3,005 $ — $ 1,781 $ 2,679 December 31, 2015 Derivative assets $ 1,332 $ — $ 1,332 $ — $ — $ 1,332 Derivative liabilities 2,417 — 2,417 — 2,417 — Total derivative instruments $ 3,749 $ — $ 3,749 $ — $ 2,417 $ 1,332 The Company has recorded a loss of $0.4 million , net of tax, as component of accumulated other comprehensive income at December 31, 2016 associated with the cash flow hedging instrument and expects $0.7 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 Comprehensive Income relating to derivative instruments designated as cash flow hedges, net of tax: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Amount of net gains (losses) recorded in OCI (effective portion) $ 333 $ (489 ) $ (1,923 ) 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 hedge no longer be considered effective. No amount of ineffectiveness was included in net income for the years ended December 31, 2016 , 2015 , and 2014, respectively. The Company will continue to assess the effectiveness of the hedge 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 December 31, 2016 , the aggregate fair value of derivative instruments with credit-risk-related contingent features that were in a net liability position was $1.8 million , for which the Company has posted collateral with a fair value of $6.4 million .

Deposits

Deposits	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Deposits	DEPOSITS The following tables present the scheduled maturities of time deposits at December 31, 2016: Less than $100,000 $100,000 and Greater Total (Dollars in thousands) 2017 $ 334,038 $ 862,090 $ 1,196,128 2018 46,005 245,870 291,875 2019 13,365 36,294 49,659 2020 10,652 7,733 18,385 2021 2,997 5,019 8,016 Thereafter — — — Total $ 407,057 $ 1,157,006 $ 1,564,063

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Borrowings	BORROWINGS The following table presents the Company’s short-term borrowings: December 31, 2016 2015 (Dollars in thousands) Repurchase agreements (1) $ 70,704 $ 64,373 Federal funds purchased 20,000 19,839 Advances from FHLB 77,600 4,000 Revolving credit facility — 15,000 Total short-term borrowings $ 168,304 $ 103,212 (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 Company may purchase federal funds through unsecured federal funds lines of credit totaling $155.0 million at December 31, 2016. These lines are intended for short-term borrowings and are subject to restrictions limiting the frequency and terms of advances. These lines of credit are payable on demand and bear interest based upon the daily federal funds rate. The Company has an uncollateralized 364 -day revolving credit facility (the “Credit Agreement”) for an aggregate principal amount of up to $25 million at any time outstanding. The Credit Agreement matures on November 11, 2017 with an interest rate the greater of i) 3.25% , ii) the Prime Rate, or iii) the Federal Funds rate, plus 0.50% . There were no borrowings outstanding under the Credit Agreement at December 31, 2016. Additional information on the Company’s short-term borrowings is presented in the following table: Years Ended December 31, 2016 2015 2014 (Dollars in thousands) Maximum outstanding at any month-end during the year $ 168,304 $ 203,682 $ 195,941 Average outstanding balance 77,060 122,619 96,043 Average interest rate for the year 0.86 % 0.47 % 0.45 % Average interest rate at year end 0.79 % 0.27 % 0.28 % The following table presents the Company’s long-term debt: December 31, 2016 2015 (Dollars in thousands) Advances from FHLB, net (1) $ 86,626 $ 81,371 Subordinated notes, net (1) 70,648 70,790 Junior subordinated debentures, net (1) 44,374 36,190 Total long-term debt $ 201,648 $ 188,351 (1) Long-term debt balances are presented net of debt issuance costs and unamortized premiums or discounts. The Company has $84.0 million of long-term advances outstanding with the FHLB as of December 31, 2016, with maturity dates ranging from 2018 to 2021 and an average interest rate of 2.07% . At December 31, 2016, real estate loans and investment securities with carrying values of $1.79 billion and $5.7 million , respectively, were assigned under this arrangement. The Parent Company has issued $60.0 million of 5.50% Fixed to Floating Rate Subordinated Notes (the "Subordinated Notes"), all of which are outstanding at December 31, 2016. The Subordinated Notes bear interest at a fixed rate of 5.50% per year for the first 5 years and, from October 1, 2019 to the October 1, 2024 maturity date, the interest rate will reset quarterly to an annual interest rate equal to the then current three-month LIBOR plus 359 basis points. The Subordinated Notes are redeemable by the Parent Company at any quarterly interest payment date beginning on October 1, 2019 to maturity at par, plus accrued and unpaid interest. The Company assumed a junior subordinated note in conjunction with the Valley acquisition with an outstanding balance of $10.6 million at December 31, 2016. 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 was 5.61% at December 31, 2016. In addition, the Company has the ability to borrow funds from the Federal Reserve utilizing the discount window and the borrower-in-custody of collateral arrangement. At December 31, 2016 , commercial loans and investment securities with carrying values of $453.8 million and $2.8 million , respectively, were assigned under these arrangements. The Company had no outstanding borrowings with the Federal Reserve at December 31, 2016. The following table details the junior subordinated debentures outstanding: December 31, Shares issued Interest rate Maturity date 2016 2015 (Dollars in thousands) BNC Bancorp Capital Trust I 5,000 LIBOR plus 3.25% 4/15/2033 $ 5,155 $ 5,155 BNC Bancorp Capital Trust II 6,000 LIBOR plus 2.80% 4/7/2034 6,186 6,186 BNC Capital Trust III 5,000 LIBOR plus 2.40% 9/23/2034 5,155 5,155 BNC Capital Trust IV 7,000 LIBOR plus 1.70% 12/31/2036 7,217 7,217 Southcoast Capital Trust III 10,000 LIBOR plus 1.50% 9/30/2035 10,310 — Valley Financial (VA) Statutory Trust I 4,000 LIBOR plus 3.10% 6/26/2033 4,124 4,124 Valley Financial (VA) Statutory Trust II 7,000 LIBOR plus 1.49% 12/15/2035 7,217 7,217 Valley Financial Statutory Trust III 5,000 LIBOR plus 1.73% 1/30/2037 5,155 5,155 50,519 40,209 Unamortized discount 5,970 3,833 Unamortized debt issuance costs 175 186 $ 44,374 $ 36,190 The Company was not aware of any violations of loan covenants at December 31, 2016.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2016
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 income taxes: Unrealized Holding Gains on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding 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 (1,333 ) — (489 ) (1,822 ) Reclassifications from accumulated other comprehensive income (529 ) (502 ) — (1,031 ) Net current period other comprehensive loss (1,862 ) (502 ) (489 ) (2,853 ) Balance at December 31, 2015 5,227 2,787 (685 ) 7,329 Other comprehensive loss before reclassifications (4,731 ) — 333 (4,398 ) Reclassifications from accumulated other comprehensive income (4 ) (1,089 ) — (1,093 ) Net current period other comprehensive loss (4,735 ) (1,089 ) 333 (5,491 ) Balance at December 31, 2016 $ 492 $ 1,698 $ (352 ) $ 1,838 The following table details reclassification adjustments from accumulated other comprehensive income: Year Ended December 31, Component of Accumulated Other Comprehensive Income 2016 2015 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains on investment securities available-for-sale $ 5 $ 839 Gain (loss) on sale of investment securities, net (1 ) (310 ) Income tax expense 4 529 Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 1,729 797 Interest income - investment securities (640 ) (295 ) Income tax expense 1,089 502 Total, net of tax Total reclassifications for the period $ 1,093 $ 1,031 (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 Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurement	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 – At June 30, 2016, the Company transferred $5.4 million of equity securities available-for-sale from Level 2 of the fair value hierarchy to Level 1, as the Company concluded the trading volume for these securities has increased and the Company believes there is an active market for determining the fair value of identical securities. The Company classifies the entire equity securities portfolio as Level 1 valuation. The Company utilizes a third-party pricing service to determine the fair value of the remainder of the investment securities available-for-sale. At December 31, 2016, the Company changed the methodology for pricing the remainder of the investment securities available-for-sale to solely use observable transactions of comparable securities. Previously, the third-party pricing was based on a range of observable market inputs, which included 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 included new issue data, monthly payment information and “To Be Announced” prices. The valuation of state and municipal securities also included the use of material event notices. This change in methodology led to a $4.1 million reduction in the fair value of investment securities available-for-sale. The Company has determined that both valuation methodologies utilize Level 2 valuation inputs. 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 has determined the fair value of derivative instruments utilize Level 2 inputs. 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 December 31, 2016 (Dollars in thousands) Assets: Investment securities available-for-sale: U.S. Government agencies $ 25,394 $ — $ 25,394 $ — State and municipals 208,705 — 208,705 — Corporate debt securities 50,838 — 50,838 — Asset backed securities 163,751 — 163,751 — Equity securities 15,535 10,272 5,263 — Mortgage-backed securities: Residential government sponsored 113,949 — 113,949 — Other government sponsored 952 — 952 — Total investment securities available-for-sale 579,124 10,272 568,852 — Derivative instruments: Interest rate swaps - not designated 1,224 — 1,224 — Total derivative instruments 1,224 — 1,224 — Total assets measured at fair value on a recurring basis $ 580,348 $ 10,272 $ 570,076 $ — Liabilities: Interest rate swap - cash flow hedge $ 557 $ — $ 557 $ — Interest rate swaps - not designated 1,224 — 1,224 — Total liabilities measured at fair value on a recurring basis $ 1,781 $ — $ 1,781 $ — Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 December 31, 2015 (Dollars in thousands) Assets: Investment securities available-for-sale: U.S. Government agencies $ 12,327 $ — $ 12,327 $ — State and municipals 180,618 — 180,618 — Corporate debt securities 47,703 — 47,703 — Other debt securities 138,747 — 138,747 — Equity securities 11,273 637 10,636 — Mortgage-backed securities: Residential government sponsored 97,777 — 97,777 — Other government sponsored 1,695 — 1,695 — Total investment securities available-for-sale 490,140 637 489,503 — Derivative instruments: Interest rate swap - not designated 1,332 — 1,332 — Total derivative instruments 1,332 — 1,332 — Total assets measured at fair value on a recurring basis $ 491,472 $ 637 $ 490,835 $ — Liabilities: Interest rate swap - cash flow hedge $ 1,085 $ — $ 1,085 $ — Interest rate swap - not designated 1,332 — 1,332 — Total liabilities measured at fair value on a recurring basis $ 2,417 $ — $ 2,417 $ — 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 TDR 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. OREO – OREO is initially recorded at the lower of carrying value or fair value, less costs to sell. 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 December 31, 2016 (Dollars in thousands) Loans held for sale $ 43,731 $ — $ 43,731 $ — Impaired loans 162,121 — — 162,121 OREO 26,489 — — 26,489 Total assets measured at fair value on a nonrecurring basis $ 232,341 $ — $ 43,731 $ 188,610 December 31, 2015 Loans held for sale $ 39,470 $ — $ 39,470 $ — Impaired loans 185,974 — — 185,974 OREO 32,561 — — 32,561 Total assets measured at fair value on a nonrecurring basis $ 258,005 $ — $ 39,470 $ 218,535 The following table presents the valuation and unobservable inputs for Level 3 assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2016: Description Fair Value (in thousands) Valuation Methodology Unobservable Inputs Range of Inputs Impaired loans $ 162,121 Appraised value Discount to reflect current market conditions and ultimate collectability 0% - 20% OREO 26,489 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 December 31, 2016 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 260,182 $ 260,182 $ 260,182 $ — $ — Investment securities available-for-sale 579,124 579,124 10,272 568,852 — Investment securities held-to-maturity 317,662 312,808 — 312,808 — Federal Home Loan Bank stock 13,180 13,180 — 13,180 — Loans held for sale 43,731 43,731 — 43,731 — Loans receivable, net 5,418,209 5,444,530 — 5,282,409 162,121 Accrued interest receivable 22,020 22,020 — 22,020 — Investment in bank-owned life insurance 202,005 202,005 — 202,005 — Interest rate swaps - not designated 1,224 1,224 — 1,224 — Financial liabilities: Demand deposits and savings 4,518,914 4,518,914 — 4,518,914 — Time deposits 1,564,063 1,575,697 — 1,575,697 — Short-term borrowings 168,304 168,304 — 168,304 — Long-term debt 201,648 190,851 — 190,851 — Accrued interest payable 2,273 2,273 — 2,273 — Interest rate swap - cash flow hedge 557 557 — 557 — Interest rate swaps - not designated 1,224 1,224 — 1,224 — Carrying Value Fair Value Level 1 Level 2 Level 3 December 31, 2015 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 204,238 $ 204,238 $ 204,238 $ — $ — Investment securities available-for-sale 490,140 490,140 637 489,503 — Investment securities held-to-maturity 244,417 249,679 — 249,679 — Federal Home Loan Bank stock 8,171 8,171 — 8,171 — Loans held for sale 39,470 39,470 — 39,470 — Loans receivable, net 4,168,224 4,228,455 — 4,042,481 185,974 Accrued interest receivable 18,055 18,055 — 18,055 — FDIC indemnification asset 1,909 1,909 — — 1,909 Investment in bank-owned life insurance 116,806 116,806 — 116,806 — Interest rate swaps - not designated 1,332 1,332 — 1,332 — Financial liabilities: Demand deposits and savings 3,143,369 3,143,369 — 3,143,369 — Time deposits 1,598,838 1,611,707 — 1,611,707 — Short-term borrowings 103,212 103,212 — 103,212 — Long-term debt 188,351 183,062 — 183,062 — Accrued interest payable 2,002 2,002 — 2,002 — Interest rate swap - cash flow hedge 1,085 1,085 — 1,085 — Interest rate swaps - not designated 1,332 1,332 — 1,332 — 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 Company utilizes a third-party pricing service to determine the fair value of investment securities held-to-maturity. At December 31, 2016, the Company changed the methodology for pricing investment securities held-to-maturity to solely use observable transactions of comparable securities. Previously, investment securities held-to-maturity were valued based on a range of observable market inputs, which included benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers and reference data obtained from market research publications. 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.

Regulatory Capital

Regulatory Capital	12 Months Ended
	Dec. 31, 2016
Regulatory Capital [Abstract]
Regulatory Capital	REGULATORY CAPITAL The Company is subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial condition and results of operations. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about component risk weightings and other factors. At December 31, 2016 and 2015 the Company’s and the Bank’s Tier 1 and total capital ratios and their Tier 1 leverage ratios exceeded minimum requirements. In July 2013, the Federal Reserve Board approved and published the final Basel III Capital Rules establishing a new comprehensive capital framework for U.S. banking organizations. The Basel III Capital Rules, among other things, (i) introduce CET1 as a new capital measure, (ii) specify that Tier 1 capital consists of CET1 and “Additional Tier 1 capital” instruments meeting specified requirements, (iii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iv) expand the scope of the deductions from and adjustments to capital as compared to existing regulations. The Basel III Capital Rules were effective for BNC and the Company on January 1, 2015 (subject to a phase-in period for certain components). CET1 capital for the Company and BNC consists of common stock, related paid-in capital, and retained earnings. In connection with the adoption of the Basel III Capital Rules, we elected to opt-out of the requirement to include most components of accumulated other comprehensive income in CET1. CET1 for both the Company and BNC is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Basel III limits capital distributions and certain discretionary bonus payments if the banking organization does not hold a “capital conservation buffer” consisting of 2.50% of CET1 capital, Tier 1 capital and total capital to risk-weighted assets in addition to the amount necessary to meet minimum risk-based capital requirements. The capital conservation buffer, which was effective beginning January 1, 2016, is 0.625% of risk-weighted assets, and will increase each year until fully implemented at 2.50% on January 1, 2019. When fully phased in on January 1, 2019, Basel III will require (i) a minimum ratio of CET1 capital to risk-weighted assets of at least 4.50% , plus a 2.50% capital conservation buffer, (ii) a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.00% , plus the capital conservation buffer, (iii) a minimum ratio of total capital to risk-weighted assets of at least 8.00% , plus the 2.50% capital conservation buffer and (iv) a minimum leverage ratio of 4.00% . The following tables present BNC’s regulatory capital ratios: For capital adequacy purposes To be well capitalized under prompt corrective action provisions Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio December 31, 2016 (Dollars in thousands) Total capital (to total risk-weighted assets) $ 757,413 12.37 % $ 528,305 8.625 % $ 612,528 10.00 % Tier 1 capital (to total risk-weighted assets) 719,663 11.75 % 405,800 6.625 % 490,022 8.00 % Tier 1 leverage (to total adjusted quarterly average assets) 719,663 10.45 % 275,513 4.00 % 344,391 5.00 % CET1 (to total risk-weighted assets) 719,663 11.75 % 313,921 5.125 % 398,143 6.50 % For capital adequacy purposes To be well capitalized under prompt corrective action provisions Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio December 31, 2015 (Dollars in thousands) Total capital (to risk weighted assets) $ 548,238 11.61 % $ 377,812 8.00 % $ 472,265 10.00 % Tier 1 capital (to risk weighted assets) 516,547 10.94 % 283,359 6.00 % 377,812 8.00 % Tier 1 capital (to average assets) 516,547 9.80 % 210,868 4.00 % 263,585 5.00 % CET1 (to total risk-weighted assets) 516,547 10.94 % 212,519 4.50 % 306,973 6.50 % The following table presents the Company’s regulatory capital ratios: December 31, 2016 2015 Total capital (to total risk-weighted assets) 13.03 % 12.19 % Tier 1 capital (to total risk-weighted assets) 11.28 % 10.05 % Tier 1 leverage (to total adjusted quarterly average assets) 10.03 % 9.01 % CET1 (to total risk-weighted assets) 10.54 % 9.32 %

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The following tables present the Company’s income tax expense: Year Ended December 31, 2016 2015 2014 Current income tax expense: (Dollars in thousands) Federal $ 13,083 $ 5,234 $ 9,159 State 2,290 2,342 1,257 Total current income tax expense 15,373 7,576 10,416 Deferred income tax expense (benefit): Federal 10,330 9,161 (1,181 ) State 1,241 2,012 1,130 Total deferred income tax expense (benefit) 11,571 11,173 (51 ) Total income tax expense $ 26,944 $ 18,749 $ 10,365 The following tables present the difference between income tax expense and the amount computed by applying the statutory income tax rate: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Tax at statutory federal tax rate $ 31,450 $ 22,120 $ 13,517 Federal income tax revaluation — (1,182 ) — State income tax, net of federal benefit 1,908 2,406 1,575 State income tax revaluation, net of federal benefit 388 424 — Tax exempt interest income (5,077 ) (4,752 ) (4,485 ) Income from life insurance (1,777 ) (958 ) (810 ) Capital loss carryforward expiration — 1,444 — Change in valuation allowance (455 ) (1,462 ) — Non-deductible merger and acquisition expenses 572 375 411 Other (65 ) 334 157 Total income tax expense $ 26,944 $ 18,749 $ 10,365 Significant components of deferred tax assets and liabilities were as follows: December 31, 2016 2015 Deferred income tax assets: (Dollars in thousands) Allowance for loan losses $ 12,762 $ 10,727 Net operating loss carryforwards 10,627 6,574 Deferred compensation 9,257 3,738 Unrealized loss on derivatives 206 401 OREO writedowns 8,656 4,975 AMT credit carryforward 11,988 13,555 FDIC acquisitions — 3,428 Interest on nonaccrual loans — 424 Stock-based compensation 1,665 1,320 Fair value adjustments from acquisitions 14,236 14,374 Other 4,548 1,991 Total deferred income tax assets 73,945 61,507 Deferred income tax liabilities: Premises and equipment 5,144 4,162 Leasing activities 1,928 873 Unrealized gains on investment securities and derivatives 1,286 4,706 Deferred loan costs and fees 4,960 3,159 Core deposit intangibles 8,659 6,153 FDIC acquisitions 680 — Other 1,435 2,036 Total deferred income tax liabilities 24,092 21,089 Less valuation allowance 989 1,444 Net deferred income tax asset $ 48,864 $ 38,974 The valuation allowance of $1.0 million at December 31, 2016 relates to the net operating loss carryforwards and capital loss carryforwards obtained from business combinations for which realizability is uncertain. The reduction in valuation allowance from 2015 was due to the use of a capital loss carryforward that was previously fully reserved under the valuation allowance. In assessing the realizability of the Company's deferred income tax asset, the Company considered whether it is more likely than not that some portion or all of the deferred income tax asset will not be realized in accordance with the guidance provided by ASC 740. The ultimate realization of deferred income tax assets is dependent upon the generation of future taxable income during periods in which those temporary differences become deductible. The Company considers the scheduled reversal of deferred income tax liabilities, projected future taxable income and tax planning strategies in making this assessment. Based on the weight of available evidence, the Company determined that it is more likely than not that it will be able to realize the benefits of the deferred income tax asset, net of valuation allowance, at December 31, 2016. At December 31, 2016, the Company had net operating loss and other carryforwards of approximately $26.1 million available to offset future taxable income, which begin expiring in 2029. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50 percent likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above is reflected as a liability for unrecognized tax benefits in the accompanying consolidated balance sheet along with any associated interest and penalties that would be payable to the taxing authorities upon examination. The Company did not have an accrual for uncertain tax positions at December 31, 2016 or 2015. We are subject to routine audits of our tax returns by the Internal Revenue Service and various state taxing authorities. With few exceptions, we are no longer subject to Federal and state income tax examinations by tax authorities for years before 2013. There are no indications of any material adjustments relating to any examination currently being conducted by any taxing authority.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
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: December 31, 2016 2015 (Dollars in thousands) Commitments under unfunded loans and lines of credit $ 1,448,453 $ 1,010,497 Letters of credit 14,611 14,213 We invest as a limited partner in partnerships that operate qualified affordable housing or invest in emerging companies in our geographic region. These limited partnership structures are considered to be variable interest entities ("VIEs") because the limited partners with equity at risk do not have substantive kick-out rights through voting rights or substantive participating rights over the general partner. As a limited partner, we are not the primary beneficiary of the VIEs and do not consolidate them. Our investments in these partnerships are recorded in other assets on the Consolidated Balance Sheets. The Company has commitments to invest up to $18.3 million in these VIEs, of which $13.1 million was unfunded at December 31, 2016. At December 31, 2016, our maximum exposure to loss was our $5.2 million recorded investment. 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	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016, 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. The Company had 66,000 Rights issued under the 2006 Omnibus Plan, 861,933 Rights issued and 354,105 Rights available for grants or awards under the 2013 Omnibus Plan, and 44,236 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 year ended December 31, 2016 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, 2015 152,571 $ 9.69 Issued — — Exercised 82,125 9.58 Forfeited or expired — — Outstanding at December 31, 2016 70,446 $ 9.82 1.53 $ 1,555 Exercisable at December 31, 2016 70,422 $ 9.82 1.53 $ 1,555 The related compensation expense recognized for stock options, the intrinsic value of stock option exercised, and the grant-date fair value of options that vested was immaterial for the years ended December 31, 2016 , 2015, and 2014, respectively. Net cash received from stock option exercises under all share-based payment arrangements for the years ended December 31, 2016, 2015, and 2014 was $0.7 million , $1.8 million , and $0.2 million , respectively. The actual tax benefit realized for income tax deductions from stock option exercises was $0.7 million , $0.3 million and $0.1 million for the years ended December 31, 2016, 2015, and 2014, respectively. Restricted Stock Awards. A summary of the activity of the Company’s unvested restricted stock awards for the year ended December 31, 2016 is presented below: Number of Shares Weighted Average Grant-Date Fair Value per Share Unvested at December 31, 2015 516,088 $ 15.78 Granted 523,265 29.26 Vested (133,727 ) 14.31 Forfeited (4,900 ) 19.94 Unvested at December 31, 2016 900,726 $ 23.80 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 Company recognized compensation expense of $3.5 million , $2.7 million and $2.2 million for restricted stock awards for the years ended December 31, 2016 , 2015 , and 2014, respectively. At December 31, 2016 , there was $17.6 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 1.51 years . The grant-date fair value of restricted stock grants vested was $1.9 million , $1.7 million and $1.7 million during the years ended December 31, 2016 , 2015, and 2014, respectively. Qualified Profit Sharing 401(k) Plan - The Company maintains a qualified profit sharing 401(k) plan for employees 20.5 years of age or over which covers substantially all employees. Under the plan, employees may contribute up to an annual maximum as determined by the Internal Revenue Code. Prior to January 1, 2015, the Company matched 50% of the employee contributions up to 6% of the participant's contribution. Effective January 1, 2015, the Company's match of participant contributions increased to 100% up to 3% of the participant's contributions and 50% on 4% and 5% of participant's contributions. The plan provides that employees' contributions are 100% vested at all times and, prior to January 1, 2015, the Company's contributions vested at 20% each year after the second year of service. Effective January 1, 2015, the Company's contributions, both past and future, were immediately vested at 100% . The expense related to the 401(k) plan for the years ended December 31, 2016, 2015, and 2014 was $2.3 million , $2.0 million and $1.0 million , respectively. Employment Agreements - The Company has entered into employment agreements with its chief executive officer and chief financial officer to ensure a stable and competent management base. The agreements provide for a three -year term, with an automatic one -year renewal on each anniversary date. The agreements provide for benefits as set forth in the contracts and cannot be terminated by the Board of Directors, except for cause, without prejudicing the officers’ rights to receive certain vested benefits, including compensation. In the event of a change in control of the Company, as outlined in the agreements, the acquiror will be bound to the terms of the contracts. Director and Executive Officer Benefit Plans - The Company has Salary Continuation Agreements and supplemental retirement benefits with its chief executive officer and certain other officers. The Salary Continuation Agreements provide for lifetime benefits to be paid to each executive with the payment amounts varying upon different retirement scenarios, such as normal retirement, early termination, disability, or change in control. The Company has purchased life insurance policies on the participating officers in order to provide future funding of benefit payments. Provisions for the years ended December 31, 2016, 2015, and 2014 totaled $4.6 million , $0.5 million and $0.4 million , respectively. The corresponding liability related to these benefit plans was $11.6 million and $7.9 million as of December 31, 2016 and 2015, respectively. The Company also has a deferred compensation plan for its directors. Expense provided under the plan totaled $0.2 million , $0.5 million and $0.1 million for the years ended December 31, 2016, 2015, and 2014, respectively. Since 2003, directors have had the option to invest amounts deferred in Company common stock that is held in a rabbi trust established for that purpose. At December 31, 2016 and 2015, the trust held 361,055 and 367,885 shares of Company common stock, respectively.

Parent Company Financial Statem

Parent Company Financial Statements	12 Months Ended
	Dec. 31, 2016
Parent Company Financial Statements [Abstract]
Parent Company Financial Statements	PARENT COMPANY FINANCIAL DATA The following are condensed financial statements of the Parent Company as of and for the years ended December 31, 2016, 2015, and 2014: CONDENSED BALANCE SHEETS December 31, 2016 2015 Assets (Dollars in thousands) Cash and due from banks $ 30,808 $ 39,888 Investment in bank subsidiary 980,483 674,004 Investment in other subsidiaries 3,338 1,609 Other assets 2,521 387 Total assets $ 1,017,150 $ 715,888 Liabilities and shareholders' equity Short-term borrowings $ — $ 15,000 Long-term debt 115,021 108,207 Other liabilities 247 534 Total liabilities 115,268 123,741 Shareholders' equity: Common stock, no par value 709,935 448,728 Common stock, non-voting, no par value 33,507 33,507 Retained earnings 156,602 102,583 Stock in directors rabbi trust (4,737 ) (4,753 ) Directors deferred fees obligation 4,737 4,753 Accumulated other comprehensive income 1,838 7,329 Total shareholders' equity 901,882 592,147 Total liabilities and shareholders' equity $ 1,017,150 $ 715,888 CONDENSED STATEMENTS OF INCOME Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Dividends from bank subsidiary $ — $ 11,100 $ 29,612 Equity in undistributed earnings of bank subsidiary 67,907 38,779 3,336 Other income 688 662 647 Interest expense 5,487 4,596 2,796 Other expense 195 1,495 1,409 Net income $ 62,913 $ 44,450 $ 29,390 CONDENSED STATEMENTS OF CASH FLOWS Year Ended December 31, 2016 2015 2014 Operating activities (Dollars in thousands) Net income $ 62,913 $ 44,450 $ 29,390 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (67,907 ) (38,779 ) (3,336 ) Amortization 251 157 452 Decrease (increase) in other assets 297 118 (1,323 ) (Decrease) increase in other liabilities (43,537 ) (420 ) 828 Net cash (used in) provided by operating activities (47,983 ) 5,526 26,011 Investing activities Investment in subsidiaries (1,419 ) (39,695 ) (37,903 ) Net cash received from acquisitions 4,493 1,289 — Net cash provided by (used in) investing activities 3,074 (38,406 ) (37,903 ) Financing activities Net (decrease) increase in short-term borrowings (15,000 ) 15,000 — Net (decrease) increase in long-term debt (120 ) (190 ) 31,125 Issuance of common stock 59,843 57,563 — Common stock issued from exercise of stock options, net of tax 720 1,776 173 Common stock issued pursuant to dividend reinvestment plan 276 301 336 Common stock repurchased — (3,622 ) (5,081 ) Common stock repurchased in lieu of income taxes (996 ) (699 ) (598 ) Cash dividends paid, net of accretion (8,894 ) (7,078 ) (5,738 ) Net cash provided by financing activities 35,829 63,051 20,217 Net (decrease) increase in cash and cash equivalents (9,080 ) 30,171 8,325 Cash and cash equivalents, beginning of period 39,888 9,717 1,392 Cash and cash equivalents, end of period $ 30,808 $ 39,888 $ 9,717

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On January 22, 2017, the Company and Pinnacle entered into an Agreement and Plan of Merger, pursuant to which Pinnacle will acquire the Company. Pinnacle will acquire 100% of the outstanding shares of the Company in exchange for shares of Pinnacle’s common stock. The exchange ratio has been fixed at 0.5235 shares of Pinnacle’s common stock for each share of the Company’s common stock. The transaction is expected to close during the third quarter of 2017, subject to shareholder and regulatory approval and other customary closing conditions.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Organization The Company was formed in 2002 to serve as a one-bank holding company for the Bank. The Bank is incorporated under the laws of the State of North Carolina and provides a wide range of banking services tailored to the particular banking needs of the communities we serve. The Bank is principally engaged in the business of attracting deposits from the general public and using those deposits, together with other funding from our lines of credit, to make commercial and consumer loans. The Bank also offers a wide range of banking services, including traditional products such as checking and savings accounts. The Bank conducts operations through 76 full-service banking offices, including 41 branches in North Carolina, 26 branches in South Carolina and nine branches in Virginia. Basis of Presentation The accompanying consolidated financial statements include the accounts and transactions of the Company and all significant intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	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 other intangible assets.
Reclassifications	Reclassifications Certain amounts in the 2015 consolidated financial statements have been reclassified to conform to the 2016 presentation. The reclassifications had no effect on net income, net income available to common shareholders or shareholders' equity as previously reported.
Business Combinations	Business Combinations The Company accounts for its business combinations using the acquisition method of accounting. This method requires the use of fair values in determining the carrying values of the purchased assets and assumed liabilities, which are recorded at fair value at acquisition date, and identifiable intangible assets are recorded at fair value. Costs directly related to the business combinations are recorded as expenses as they are incurred. Fair values are subject to adjustment for up to one year after the closing date of an acquisition as additional information relative to closing date fair values become available.
Cash and Cash Equivalents	Cash and Cash Equivalents For the purpose of presentation in the statements of cash flows, cash and cash equivalents include cash, deposits with other financial institutions, and federal funds sold. Federal regulations require financial institutions to set aside a specified amount as a reserve against transaction accounts and time deposits.
Investment Securities	Investment Securities Investment securities are classified as held-to-maturity or available-for-sale at the time of purchase. Investment securities classified as held-to-maturity, which management has the positive intent and ability to hold to maturity, are reported at amortized cost. Investment securities classified as available for sale, which management has the intent and ability to hold for an indefinite period of time, but not necessarily to maturity, are carried at fair value, with unrealized gains and losses, net of related deferred income taxes, included in shareholders’ equity as a separate component of other comprehensive income. Any decision to sell investment securities available for sale would be based on various factors, including, but not limited to, asset / liability management strategies, changes in interest rates or prepayment risks, liquidity needs, or regulatory capital considerations. Premiums are amortized and discounts accreted using the interest method over the remaining terms of the related securities. Dividend and interest income are recognized when earned. Sales of investment securities are recorded at trade date, with realized gains and losses on sales determined using the specific identification method and included in non-interest income. Transfers of investment securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in accumulated other comprehensive income and in the carrying value of the held-to-maturity securities. Such amounts are amortized over the remaining life of the security. The Company evaluates securities for other-than-temporary impairment ("OTTI") on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, the Company considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. The Company also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) OTTI related to credit loss, which must be recognized in the income statement and 2) other-than-temporary impairment (OTTI) related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock As a member of the FHLB of Atlanta, the Company is required to maintain an investment in the stock of the FHLB based upon the amount of outstanding FHLB borrowings. This stock does not have a readily determinable fair value and is carried at cost.
Loans and Leases	Loans and Leases Originated Loans and Leases Loans that management has the intent and ability to hold for the foreseeable future or until maturity are reported at their outstanding principal balances, adjusted for any charge-offs, unearned discounts, and unamortized fees and costs. Interest income on loans is accrued and credited to income based upon the principal amount outstanding. The net amount of nonrefundable loan origination fees and certain direct costs associated with the lending process are deferred and amortized to interest income over the contractual lives of the loans using methods that approximate the interest method. The Company classifies all loans and leases past due when the payment of principal and/or interest based upon contractual terms is greater than 30 days delinquent. When commercial loans are placed on nonaccrual status as described below, a charge-off is recorded, as applicable, to decrease the carrying value of such loans to the estimated fair value of the collateral securing the loan. Consumer loans are placed on nonaccrual status at a specified delinquency date consistent with regulatory guidelines. As such, consumer loans are subject to collateral valuation and charge-off, as applicable, when they are moved to nonaccrual status. The accrual of interest income for commercial loans is discontinued when there is a clear indication that the borrower’s cash flow may not be sufficient to meet payments as they become due, while the accrual of interest income for consumer loans is discontinued when loans reach specific delinquency levels. Acquired Loans Acquired loans are recorded at their fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased impaired or purchased non-impaired. Purchased impaired loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. For purchased impaired loans, expected cash flows at the acquisition date in excess of the fair value of loans are recorded as interest income over the life of the loans using a level yield method if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the acquisition date, increases in cash flows over those expected at the acquisition date are recognized prospectively as interest income. Decreases in expected cash flows after the acquisition date are recognized immediately through the provision for loan losses. For purchased non-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the economic life of the loans using a method that approximates the interest method.
Loans Held-for-sale	Loans Held for Sale The Company originates certain single family, residential first mortgage loans for sale on a presold basis and these loans are classified as loans held for sale. Loans held for sale are carried at the lower of cost or estimated fair value in the aggregate as determined by outstanding commitments from investors. Upon closing, these loans, together with their servicing rights, are sold to other financial institutions under prearranged terms on a best-efforts basis. Gains or losses on loan sales are recognized at the time of sale and are determined by the difference between net sales proceeds and the principal balance of the loans sold, adjusted for net deferred loan fees or costs. Loan origination and commitment fees, net of certain direct loan origination costs, are deferred as an adjustment to the carrying value of the loan until it is sold. The commitments to sell loans and the commitments to originate loans held for sale at a set interest rate, if originated, are considered derivatives under GAAP. The impact of the estimated fair value adjustment was not significant to the consolidated financial statements.
Nonperforming Loans	Nonperforming Loans The Company considers a loan impaired, based on current information and events, if it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. All impaired loans are measured based on the present value of the expected future cash flows discounted at the loan's effective interest rate, the loan's observable market price, or at the fair value of the collateral if the loan is collateral dependent. The Company uses several factors in determining if a loan is impaired. Internal asset classification procedures include a thorough review of significant loans and lending relationships and include the accumulation of related data. This data includes loan payment status and the borrowers' financial data, cash flows, operating income or loss, and other factors. These discounted cash flow analyses incorporate adjustments to future cash flows that reflect management’s best estimate based on a combination of historical experience and management judgment. Loans are generally classified as nonaccrual if they are past due as to maturity or payment of principal or interest for a period of more than ninety ( 90 ) days, unless such loans are well-secured and in the process of collection. If a loan or a portion of a loan is classified as doubtful or is partially charged off, the loan is generally classified as nonaccrual. Loans that are on a current payment status or past due less than ninety ( 90 ) days may also be classified as nonaccrual if repayment in full of principal and/or interest is in doubt. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within an acceptable period of time and there is a sustained period of repayment performance (generally, a minimum of six months) by the borrower in accordance with the contractual terms of interest and principal. While a loan is classified as nonaccrual and the future collectability of the recorded loan balance is doubtful, collections of interest and principal are generally applied as a reduction to principal outstanding. When future collection of the recorded loan balance is expected, interest income may be recognized on a cash basis. In the case where a nonaccrual loan had been partially charged off, recognition of interest on a cash basis is limited to that which would have been recognized on the recorded loan balance at the contractual interest rate. Receipts in excess of that amount are recorded as recoveries to the allowance for loan losses until prior charge-offs have been fully recovered.
Restructurings	Restructurings Modifications to a borrower’s debt agreement is considered a TDR if a concession is granted for economic or legal reasons related to a borrower’s financial difficulties that otherwise would not be considered. TDRs are undertaken in order to improve the likelihood of recovery on the loan and may take the form of modifications made with the stated interest rate lower than the current market rate for new debt with similar risk, modifications to the terms and conditions of the loan that fall outside of normal underwriting policies and procedures, or a combination of these modifications. Modifications of covered and other acquired loans that are part of a pool accounted for as a single asset are not considered TDRs. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accruing status, depending on the individual facts and circumstances of the borrower.
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses The allowance for loan and lease losses is a reserve for estimated credit losses on individually evaluated loans determined to be impaired as well as estimated credit losses inherent in the loan portfolio, and is based on quarterly evaluations of the collectability and historical loss experience of loans. Actual credit losses, net of recoveries, are deducted from the allowance for loan losses. A provision for loan losses, which is a charge against earnings, is recorded to bring the allowance for loan losses to a level that, in management’s judgment, is appropriate to absorb probable losses in the loan portfolio. All commercial loans that are originated by the Company are assigned risk grades based on an assessment of conditions that affect the borrower’s ability to meet contractual obligations under the loan agreement. This process includes reviewing borrowers’ financial information, historical payment experience, credit documentation, public information, and other information specific to each borrower. Loans with outstanding balances of $1 million or more, as well as all other loans included in such relationships, are reviewed on an annual basis. Loans with total committed exposure of $500,000 or more that are risk graded as Special Mention or worse are reviewed on a quarterly basis. All other loans are reviewed at any point management becomes aware of information affecting the borrower’s ability to fulfill their obligations. Accounting standards require the presentation of certain disclosure information at the portfolio segment level, which represents the level at which an entity develops and documents a systematic methodology to determine its allowance for loan losses. The Company concluded that its loan and lease portfolio comprises two portfolio segments: originated loans (which include purchased non-credit impaired loans) and purchased credit impaired loans. Originated loans include both commercial loans, which include commercial real estate, commercial construction, commercial and industrial and leases, and retail loans, which include residential construction, residential mortgage and consumer and other loans. The following provides a description of the Company’s accounting policies and methodologies related to each of its portfolio segments: Originated Loans The allowance for loan and lease losses consists of two components. This first component is the specific reserve, which is calculated on all individual loans in the following categories: nonperforming TDRs, commercial nonaccrual loans with net credit exposure of $250,000 or greater, and performing commercial and retail TDRs with net credit exposure of $250,000 or greater. If foreclosure is probable or the loan is collateral dependent, impairment is measured using the fair value of the loan’s collateral, less estimated costs to sell. If the loan is not considered collateral dependent, the amount of reserve is calculated based on the present value of expected cash flows discounted at the loan’s effective interest rate. Performing TDRs and nonaccrual loans, respectively, with net credit exposure less than $250,000 are pooled and evaluated for impairment in the aggregate. The second component of the allowance for loan and lease losses is the general reserve. For the commercial loan portfolio, the estimate of losses are based on pools of loans and leases with similar characteristics by applying a probability of default ("PD") factor and a loss-given default ("LGD") factor to each individual loan based on a regularly updated loan grade, using a standardized loan grading system. The PD factor and the LGD factor are determined for each loan grade using statistical models based on historical performance data. These reserve factors are developed based on credit migration models that track historical movements of loans between loan ratings over time and a combination of long-term average loss experience of our own portfolio and external industry data using a loss emergence period ranging from 18 to 23 months. In the case of more homogeneous portfolios, such as automobile loans, home equity loans, and residential mortgage loans, the determination of the transaction reserve also incorporates PD and LGD factors. The estimate of loss is based on pools of loans and leases with similar characteristics. The PD factor considers current number of days past due, which are then translated to a proxy risk grade, and this information is used to estimate expected losses over a 12 -month loss emergence period. The general reserve also includes a qualitative assessment of certain factors and the impact of changing market and economic conditions on portfolio performance. The qualitative assessment considers items unique to the Company's structure, policies, processes, and portfolio composition, as well as measurements and assessments of the loan portfolios including, but not limited to, management quality, concentrations, portfolio composition, industry comparisons, and internal review functions. For acquired loans that are not deemed credit impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value. Subsequent to the purchase date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans, however, the Company records a provision for loan losses only when the required allowance, net of any expected reimbursement under any loss-share agreements, exceeds any remaining credit discounts. The remaining differences between the purchase price and the unpaid principal balance at the date of acquisition are recorded in interest income over the economic life of the loans. Purchased Credit Impaired Loans The allowance for loan and lease losses related to purchased credit impaired loans is based on an analysis that is performed each period to estimate the expected cash flows for each of the loan pools. To the extent that the expected cash flows of a loan pool have decreased since the acquisition date, the Company establishes an allowance for loan losses.
Foreclosed Assets	Foreclosed Assets Foreclosed assets are initially recorded at estimated fair value less cost to sell at the date of foreclosure, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy a loan through completion of a deed in lieu of foreclosure or through a similar arrangement. These assets are subsequently accounted for at the lower of cost or estimated fair value less costs to sell. Operating costs and changes in the valuation allowance are included in loan, foreclosure and OREO expenses as a component of non-interest expense.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Land is carried at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the respective assets, which are 40 years for buildings and 3 to 10 years for furniture, fixtures and equipment. Leasehold improvements are amortized over the terms of the respective leases or the estimated useful lives of the improvements, whichever is shorter. Repairs and maintenance costs are recorded as a component of non-interest expense as incurred.
Bank Owned Life Insurance	Bank-Owned Life Insurance The Company has purchased life insurance policies on certain current and past key employees and directors where the insurance policy benefits and ownership are retained by the employer. These policies are recorded at their cash surrender value. Income from these policies and changes in the net cash surrender value are recorded in non-interest income as earnings on bank-owned life insurance. The cash value accumulation is permanently tax deferred if the policy is held to the insured person’s death and certain other conditions are met.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The excess of the cost of an acquisition over the fair value of the net assets acquired consists primarily of goodwill, core deposit intangibles, and other identifiable intangibles (primarily related to customer relationships acquired). Other intangible assets, which consists of core deposit and acquired customer relationship intangible assets arising from whole bank and branch acquisitions, are amortized on an accelerated method over their estimated useful lives, which range from 7 to 10 years. The Company reviews long-lived assets and other intangible assets for impairment at least annually, or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, in which case an impairment charge would be recorded. Goodwill is not amortized and is tested for impairment at least annually, or more frequently if events and circumstances exist that indicate that a goodwill impairment test should be performed. The impairment testing process is conducted by assigning net assets and goodwill to each reporting unit. An initial qualitative evaluation is made to assess the likelihood of impairment and determine whether further quantitative testing to calculate the fair value is necessary. When the qualitative evaluation indicates that impairment is more likely than not, quantitative testing is required whereby the fair value of each reporting unit is calculated and compared to the recorded book value. If the calculated fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and no further testing is considered necessary. If the carrying value of a reporting unit exceeds its calculated fair value, the impairment test continues by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying value of goodwill exceeds the implied fair value of goodwill.
Derivatives	Derivatives The Company applies hedge accounting to certain interest rate derivatives entered into for risk management purposes. To qualify for hedge accounting, a derivative must be highly effective at reducing the risk associated with the exposure being hedged. In addition, key aspects of achieving hedge accounting are documentation of hedging strategy and hedge effectiveness at the hedge inception and substantiating hedge effectiveness on an ongoing basis. A derivative must be highly effective in accomplishing the hedge objective of offsetting changes in the cash flows of the hedged item for the risk being hedged. Any ineffectiveness in the hedge relationship is recognized in earnings. The effective portion of changes in the fair value of derivatives designated in a hedge relationship and that qualify as cash flow hedges is recorded in accumulated other comprehensive income, net of tax, and is subsequently reclassified into earnings in the period that the hedged transaction affects earnings. The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings.
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 are excluded from the computation of dilutive earnings per share in the periods in which the effect would be anti-dilutive.
Income Taxes	Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences between financial statement carrying amounts and the tax bases of existing assets and liabilities that will result in taxable or deductible amounts in future years. These temporary differences are multiplied by the enacted income tax rate expected to be in effect when the taxes become payable or receivable. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced, if necessary, by the amount of such benefits that are not expected to be realized based on available evidence.
Operating Segments	Operating Segments The Company’s chief operating decision maker primarily manages operations and assesses financial performance on a Company-wide basis. However, in addition to the discrete financial information that is provided for the Company as a whole, financial information is also provided for the wealth management services, insurance services, and mortgage origination segments, respectively. While the chief operating decision maker uses the financial information related to these segments to analyze business performance and allocate resources, these segments do not meet the quantitative threshold under GAAP to be considered a reportable segment. As such, these operating segments, along with the banking operations segment, are aggregated into a single reportable operating segment in the Consolidated Financial Statements. No revenues are derived from foreign countries or from external customers that comprise more than 10% of the Company’s revenues.
Stock Compensation Plans	Stock Compensation Plans The Company follows the provisions of the authoritative guidance regarding share-based compensation. This guidance values share-based awards at the grant date fair value and recognizes the expense over the requisite service period.
Recently Adopted and Issued Accounting Standards	Recently Adopted and Issued Accounting Standards In November 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash . This ASU clarifies certain existing principles in ASC Topic 230, including providing additional guidance related to transfers between cash and restricted cash and how entities present, in their statement of cash flows, the cash receipts and cash payments that directly affect the restricted cash accounts. For public companies, ASU 2016-18 is effective for fiscal years beginning after December 15, 2017, 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 June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . The ASU requires an organization to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances. Additionally, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For public companies, this ASU will be effective for interim and annual periods beginning after December 15, 2019. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , which simplifies several aspects of the accounting for share-based payment award transactions including the income tax consequences, the classification of awards as either equity or liabilities, and the classification on the statement of cash flows. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016 and interim periods within those annual periods. Early adoption is permitted. The Company elected to early adopt ASU 2016-09 in the second quarter of 2016 with an effective date of January 1, 2016. As a result of the adoption, the Company recognized excess tax benefits of $0.7 million in the Consolidated Statements of Income and Consolidated Statements of Cash Flows, respectively, for the year ended December 31, 2016. Prior periods have not been adjusted. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which will require lessees to record an asset on the balance sheet for the right to use the leased asset and a liability for the corresponding lease obligation for leases with terms of more than 12 months. The accounting treatment for lessors will remain relatively unchanged. The ASU also requires additional qualitative and quantitative disclosures related to the nature, timing and uncertainty of cash flows arising from leases. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities , which revises the accounting treatment related to classification and measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities measured as fair value. Upon adoption, investments in equity securities, except those accounted for under the equity method or that result in the consolidation of the investee, will be measured at fair value with changes in fair value recognized in net income. Equity investments that do not have a readily determinable fair value may be measured at cost minus impairment, plus or minus changes from observable price changes in an orderly transaction. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption of certain provisions is permitted. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In September 2015, the FASB issued 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 adopted ASU 2015-16 on January 1, 2016 and the adoption did not have a material impact on the Company's 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. Prior to the adoption of ASU 2015-03 on January 1, 2016, the Company recorded debt issuance costs as other assets in the consolidated balance sheet. The Consolidated Balance Sheet as of December 31, 2015 reflects a reduction in other assets and long-term debt of $1.2 million related to the reclassification of debt issuance costs. 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. ASU 2015-02 is effective for annual and interim periods beginning after December 15, 2015. The Company adopted ASU 2015-02 on January 1, 2016 and the adoption did not have a material impact on the Company's 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 intends to adopt the ASU during the first quarter of 2018, as required, using a modified retrospective approach. The Company's preliminary analysis suggests that the adoption of this accounting guidance is not expected to have a material impact on the Company's consolidated financial statements. The FASB continues to release new accounting guidance related to the adoption of this ASU and the results of the Company's materiality analysis may change based on conclusions reached as to the application of this new guidance.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information	The following table presents unaudited pro-forma information as if the acquisitions of High Point and Southcoast had occurred on January 1, 2016 under the 2016 “Pro-forma” column. In addition, the table presents unaudited pro-forma information as if the acquisition of High Point, Southcoast and Valley had occurred on January 1, 2015 under the 2015 “Pro-forma” column. 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 each 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 High Point, Southcoast, and Valley at the beginning of 2016 or 2015. Cost savings are also not reflected in the unaudited pro-forma amounts. Pro-forma for Year Ended December 31, Actual from acquisition date through December 31, 2016 2016 2015 (Dollars in thousands, except per share data) Net interest income $ 12,177 $ 245,266 $ 234,463 Non-interest income 677 47,133 50,248 Net income 2,927 73,482 54,856 Pro-forma earnings per share: Basic $ 1.46 $ 1.17 Diluted $ 1.45 $ 1.17
Southcoast Financial Corporation
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by Southcoast Fair Value Adjustments Recast Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 24,019 $ — $ — $ 24,019 Investment securities available-for-sale 30,607 (1,094 ) (1) 692 30,205 Loans 365,232 (9,233 ) (2) — 355,999 Premises and equipment 19,585 2,304 (3) — 21,889 Other real estate owned 306 — — 306 Core deposit intangible — 3,058 (4) — 3,058 Other assets 23,082 845 (5) (256 ) 23,671 Total assets acquired 462,831 (4,120 ) 436 459,147 Liabilities Deposits (335,924 ) (175 ) (6) — (336,099 ) Borrowings (69,300 ) (1,255 ) (7) — (70,555 ) Other liabilities (4,789 ) (91 ) (8) — (4,880 ) Total liabilities assumed (410,013 ) (1,521 ) — (411,534 ) Net assets acquired $ 52,818 $ (5,641 ) $ 436 47,613 Total consideration paid 98,970 Goodwill $ 51,357 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 and other assumed liabilities. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (4,310,445 shares) $ 98,968 Cash payments to common shareholders 2 Total consideration paid $ 98,970
High Point Bank Corporation
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by High Point Fair Value Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 100,457 $ — $ 100,457 Investment securities available-for-sale 147,723 1,965 (1) 149,688 Loans 467,953 (8,392 ) (2) 459,561 Premises and equipment 20,691 3,338 (3) 24,029 Other real estate owned 176 — 176 Core deposit and other intangible assets — 9,469 (4) 9,469 Other assets 59,476 — 59,476 Total assets acquired 796,476 6,380 802,856 Liabilities Deposits (667,791 ) (112 ) (5) (667,903 ) Borrowings (18,664 ) (138 ) (6) (18,802 ) Other liabilities (15,875 ) (2,765 ) (7) (18,640 ) Total liabilities assumed (702,330 ) (3,015 ) (705,345 ) Net assets acquired $ 94,146 $ 3,365 97,511 Total consideration paid 141,264 Goodwill $ 43,753 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 estimated fair value of core deposit and other intangible assets. (5) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (6) Adjustment to reflect estimated fair value of borrowings based on market rates for similar products. (7) Adjustment to reflect the estimated fair market value of certain leases, deferred income taxes, and other assumed liabilities. A summary of the consideration paid is as follows: (Dollars in thousands) Common stock issued (4,034,743 shares) $ 98,882 Cash payments to common shareholders 42,382 Total consideration paid $ 141,264
CertusBank, N.A.
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	A summary of the fair value of assets received and liabilities assumed are as follows: As Recorded by Certus Fair Value Adjustments Recast Adjustments As Recorded by BNC Assets (Dollars in thousands) Cash $ 1,297 $ — $ — $ 1,297 Loans 186,354 (3,283 ) (1) (2,774 ) 180,297 Premises and equipment 8,542 698 (2) — 9,240 Accrued interest receivable 443 — — 443 Core deposit intangible — 1,348 (3) — 1,348 Other assets 11 734 (4) (458 ) 287 Total assets acquired 196,647 (503 ) (3,232 ) 192,912 Liabilities Deposits (175,783 ) (260 ) (5 ) — (176,043 ) Other liabilities (119 ) (487 ) (6 ) — (606 ) Total liabilities assumed (175,902 ) (747 ) — (176,649 ) Net assets acquired $ 20,745 $ (1,250 ) $ (3,232 ) 16,263 Cash consideration paid 25,692 Goodwill $ 9,429 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 recording of core deposit intangible. (4) Adjustment to reflect recording of deferred tax asset recognized from acquisition. (5) Adjustment to reflect estimated fair value of time deposits based on market rates for similar products. (6) Adjustment to reflect the estimated fair market value of certain leases.
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 Recast 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) (616 ) 607,417 Premises and equipment 8,934 892 (3) — 9,826 Accrued interest receivable 2,263 — — 2,263 Other real estate owned 8,114 — (900 ) 7,214 Core deposit intangible — 6,964 (4) — 6,964 Other assets 31,297 3,641 (5) (225 ) 34,713 Total assets acquired 844,340 (5,272 ) (1,741 ) 837,327 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 $ 56,228 $ (6,268 ) $ (1,741 ) 48,219 Total consideration paid 108,700 Goodwill $ 60,481 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 common shareholders 3 Total consideration paid $ 108,700

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
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: Year Ended December 31, 2016 2015 2014 (Dollars in thousands, except per share amounts) Net income $ 62,913 $ 44,450 $ 29,390 Weighted average common shares - basic 45,095,976 35,691,059 29,049,525 Add: Effect of dilutive Stock Rights 88,935 91,187 102,352 Weighted average common shares - diluted 45,184,911 35,782,246 29,151,877 Basic earnings per common share $ 1.40 $ 1.25 $ 1.01 Diluted earnings per common share $ 1.39 $ 1.24 $ 1.01

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 25,610 $ 118 $ 334 $ 25,394 State and municipals 205,488 4,574 1,357 208,705 Corporate debt securities 50,440 523 125 50,838 Asset-backed debt securities 164,497 342 1,088 163,751 Equity securities 15,448 87 — 15,535 Mortgage-backed securities: Residential government sponsored 115,933 241 2,225 113,949 Other government sponsored 927 25 — 952 $ 578,343 $ 5,910 $ 5,129 $ 579,124 Held-to-maturity: State and municipals $ 295,573 $ 2,613 $ 8,064 $ 290,122 Corporate debt securities 22,089 597 — 22,686 $ 317,662 $ 3,210 $ 8,064 $ 312,808 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 2015 (Dollars in thousands) Available-for-sale: U.S. Government agencies $ 12,025 $ 302 $ — $ 12,327 State and municipals 169,907 10,711 — 180,618 Corporate debt securities 48,392 — 689 47,703 Asset-backed debt securities 140,773 15 2,041 138,747 Equity securities 11,520 270 517 11,273 Mortgage-backed securities: Residential government sponsored 97,611 562 396 97,777 Other government sponsored 1,616 79 — 1,695 $ 481,844 $ 11,939 $ 3,643 $ 490,140 Held-to-maturity: State and municipals $ 228,417 $ 6,698 $ 477 $ 234,638 Corporate debt securities 16,000 1 960 15,041 $ 244,417 $ 6,699 $ 1,437 $ 249,679
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of investment securities at December 31, 2016 , 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 Available-for-sale: (Dollars in thousands) Due after one through five years $ 31,564 $ 31,563 Due after five through ten years 128,057 127,999 Due after ten years 403,274 404,027 Total debt securities 562,895 563,589 Equity securities 15,448 15,535 $ 578,343 $ 579,124 Held-to-maturity: Due after one year through five years $ 16,032 $ 15,996 Due after five through ten years 41,722 42,028 Due after ten years 259,908 254,784 $ 317,662 $ 312,808
Schedule of Realized Gain (Loss)	The following table presents a summary of realized gains and losses from the sale of investment securities: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Proceeds from sales $ 81,851 $ 119,358 $ 49,298 Gross realized gains on sales $ 596 $ 939 $ 481 Gross realized losses on sales (591 ) (55 ) (992 ) Total realized gains (losses), net $ 5 $ 884 $ (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 December 31, 2016 (Dollars in thousands) Available-for-sale: State and municipals 134 $ 89,604 $ 1,357 — $ — $ — $ 89,604 $ 1,357 Mortgage-backed securities 58 102,459 2,123 2 2,519 102 104,978 2,225 Asset-backed debt securities 9 33,888 119 17 60,255 969 94,143 1,088 U.S. Government agencies 8 14,830 334 — — — 14,830 334 Corporate debt securities 3 16,755 121 1 4,325 4 21,080 125 212 $ 257,536 $ 4,054 20 $ 67,099 $ 1,075 $ 324,635 $ 5,129 Held-to-maturity: State and municipals 145 $ 169,782 $ 7,767 7 $ 5,645 $ 297 $ 175,427 $ 8,064 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, 2015 (Dollars in thousands) Available-for-sale: Corporate debt securities 6 $ 29,015 $ 658 1 $ 2,969 $ 31 $ 31,984 $ 689 Asset-backed debt securities 29 114,305 1,726 1 4,486 315 118,791 2,041 Equity securities 1 5,200 175 1 637 342 5,837 517 Mortgage-backed securities 20 66,175 327 3 3,432 69 69,607 396 56 $ 214,695 $ 2,886 6 $ 11,524 $ 757 $ 226,219 $ 3,643 Held-to-maturity: State and municipals 13 $ 20,658 $ 210 20 $ 17,072 $ 267 $ 37,730 $ 477 Corporate debt securities — — — 1 3,040 960 3,040 960 13 $ 20,658 $ 210 21 $ 20,112 $ 1,227 $ 40,770 $ 1,437

Loans and Allowance for Loan 31

Loans and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Major Categories of Loans	Major categories of loans are presented below: December 31, 2016 2015 Originated Acquired (1) Total Originated Acquired (1) Total (Dollars in thousands) Commercial real estate $ 2,076,834 $ 820,886 $ 2,897,720 $ 1,575,555 $ 670,460 $ 2,246,015 Commercial construction 459,398 103,821 563,219 281,591 83,418 365,009 Commercial and industrial 369,287 131,974 501,261 279,495 139,621 419,116 Leases 29,529 — 29,529 26,773 — 26,773 Total commercial 2,935,048 1,056,681 3,991,729 2,163,414 893,499 3,056,913 Residential construction 93,202 21,613 114,815 59,937 16,084 76,021 Residential mortgage 599,666 725,774 1,325,440 484,895 563,563 1,048,458 Consumer and other 17,771 5,955 23,726 12,970 5,509 18,479 Total portfolio loans $ 3,645,687 $ 1,810,023 $ 5,455,710 $ 2,721,216 $ 1,478,655 $ 4,199,871 (1) Amount includes $0 and $40.9 million of acquired loans covered under FDIC loss-share agreements at December 31, 2016 and 2015, respectively. The unpaid principal balance for acquired loans covered under FDIC loss-share agreements was $0 and $41.4 million at December 31, 2016 and 2015, respectively.
Loans Acquired During the Year	The following table presents loans acquired during the year ended December 31, 2016, at acquisition date, accounted for under ASC 310-30: (Dollars in thousands) Contractually required payments receivable $ 30,484 Contractual cash flows not expected to be collected (non-accretable) (4,927 ) Expected cash flows 25,557 Interest component of expected cash flows (1,110 ) Fair value of loans acquired $ 24,447
Summary of Activity of Loans under ASC 310-30	The following table presents a summary of the activity of the Company's loans accounted for under ASC 310-30: Year Ended December 31, 2016 2015 (Dollars in thousands) Balance at beginning of period $ 142,671 $ 150,382 Purchased loans acquired 24,447 28,803 Accretion 4,394 5,311 Transfer to other real estate owned (3,254 ) (2,455 ) Net payments received (40,460 ) (36,359 ) Net charge-offs (574 ) (781 ) Other activity, net 335 (2,230 ) Balance at end of period $ 127,559 $ 142,671
Summary of Changes in Accretable Difference on Purchased Loans with Credit Deterioration	The following table presents a summary of changes in accretable difference on purchased loans accounted for under ASC 310-30: Year Ended December 31, 2016 2015 (Dollars in thousands) Balance at beginning of period $ 2,853 $ 4,418 Accretion (4,394 ) (5,311 ) Accretable difference acquired 1,110 601 Adjustments to accretable difference due to: Loans sold — (483 ) Changes in expected future cash flows 3,491 3,628 Balance at end of period $ 3,060 $ 2,853
Loan Activity with Principal Officers, Directors and Their Affiliates	Loan activity with principal officers, directors, and their affiliates during 2016 was as follows: (Dollars in thousands) Balance at beginning of year $ 18,059 Additional borrowings 41,428 Loan repayments (32,423) Balance at end of year $ 27,064
Summary of Changes to the Allowance for Loan Losses by Class of Financing Receivables	A summary of the changes to the allowance for loan losses, by class of financing receivable, is presented below: For the year ended December 31, 2016 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balance December 31, 2015 $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 Charge-offs (969 ) (89 ) (1,400 ) — — (722 ) (147 ) (3,327 ) Recoveries 768 1,049 852 — 53 1,645 97 4,464 Provision (1) 2,375 542 1,483 177 248 (217 ) 57 4,665 Change in FDIC indemnification asset (1) (4 ) (106 ) (31 ) — — 216 (23 ) 52 Balance December 31, 2016 $ 15,641 $ 5,921 $ 5,490 $ 255 $ 767 $ 9,123 $ 304 $ 37,501 For the year ended December 31, 2015 Commercial real estate Commercial construction Commercial and industrial Leases Residential construction Residential mortgage Consumer and other Total (Dollars in thousands) Balance December 31, 2014 $ 12,685 $ 4,311 $ 3,226 $ 103 $ 570 $ 9,313 $ 191 $ 30,399 Charge-offs (2,366 ) (127 ) (285 ) — — (2,228 ) (362 ) (5,368 ) Recoveries 1,013 1,859 1,339 — 117 1,234 232 5,794 Provision (2) 2,087 (1,220 ) 486 (25 ) (224 ) 543 249 1,896 Change in FDIC indemnification asset (2) 52 (298 ) (180 ) — 3 (661 ) 10 (1,074 ) Balance December 31, 2015 $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 (1) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.5) million for the year ended December 31, 2016. For the year ended December 31, 2016, this resulted in an increase in the FDIC indemnification asset of $0.1 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 $0.6 million . (2) The provision for loan losses includes the "net" provision on covered loans after coverage provided by FDIC loss-share agreements, which totaled $(0.4) million for the year ended December 31, 2015 . For the year ended December 31, 2015, this resulted in a decrease in the FDIC indemnification asset of $1.1 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 $1.5 million .
Breakdown of the Recorded Investment in Loans and the Allowance for Loan Losses	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 Balances at December 31, 2016: (Dollars in thousands) Specific reserves: Impaired loans $ 607 $ 147 $ 365 $ — $ — $ 1,255 $ 1 $ 2,375 Purchase credit impaired loans 811 321 37 — 146 1,084 2 2,401 Total specific reserves 1,418 468 402 — 146 2,339 3 4,776 General reserves 14,223 5,453 5,088 255 621 6,784 301 32,725 Total $ 15,641 $ 5,921 $ 5,490 $ 255 $ 767 $ 9,123 $ 304 $ 37,501 Loans: Individually evaluated for impairment $ 19,602 $ 3,145 $ 1,844 $ — $ — $ 14,738 $ 9 $ 39,338 Purchase credit impaired loans 73,515 11,556 1,999 — 501 39,881 107 127,559 Loans collectively evaluated for impairment 2,804,603 548,518 497,418 29,529 114,314 1,270,821 23,610 5,288,813 Total $ 2,897,720 $ 563,219 $ 501,261 $ 29,529 $ 114,815 $ 1,325,440 $ 23,726 $ 5,455,710 Balances at December 31, 2015: Specific reserves: Impaired loans $ 2,166 $ 182 $ 646 $ — $ 53 $ 1,562 $ 49 $ 4,658 Purchase credit impaired loans 1,176 354 47 — 5 971 6 2,559 Total specific reserves 3,342 536 693 — 58 2,533 55 7,217 General reserves 10,129 3,989 3,893 78 408 5,668 265 24,430 Total $ 13,471 $ 4,525 $ 4,586 $ 78 $ 466 $ 8,201 $ 320 $ 31,647 Loans: Individually evaluated for impairment $ 26,498 $ 3,223 $ 1,687 $ — $ 825 $ 18,158 $ 129 $ 50,520 Purchase credit impaired loans 85,213 12,497 2,717 — 709 41,336 199 142,671 Loans collectively evaluated for impairment 2,134,304 349,289 414,712 26,773 74,487 988,964 18,151 4,006,680 Total $ 2,246,015 $ 365,009 $ 419,116 $ 26,773 $ 76,021 $ 1,048,458 $ 18,479 $ 4,199,871
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 December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 7,230 $ 7,208 $ 448 $ 10,040 $ 9,993 Commercial construction 1,247 1,244 102 1,295 1,293 Commercial and industrial 1,214 1,209 265 397 396 Residential mortgage 4,921 4,885 482 4,275 4,271 Consumer and other 8 8 1 — — Total originated 14,620 14,554 1,298 16,007 15,953 Acquired: Commercial real estate 1,179 1,192 159 1,224 1,236 Commercial construction 264 278 45 343 343 Commercial and industrial 235 392 100 1 — Residential mortgage 3,913 4,396 773 1,649 1,677 Consumer and other — 6 — — — Total acquired 5,591 6,264 1,077 3,217 3,256 Total impaired loans $ 20,211 $ 20,818 $ 2,375 $ 19,224 $ 19,209 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, 2015 (Dollars in thousands) Originated: Commercial real estate $ 11,750 $ 11,736 $ 1,990 $ 13,099 $ 13,068 Commercial construction 1,537 1,533 123 1,325 1,320 Commercial and industrial 1,459 1,451 575 — — Residential construction 343 342 42 306 306 Residential mortgage 8,159 8,141 860 2,154 2,145 Consumer and other 10 10 1 — — Total originated 23,258 23,213 3,591 16,884 16,839 Acquired: Commercial real estate 1,374 1,390 175 330 331 Commercial construction 369 370 59 — — Commercial and industrial 232 304 71 — — Residential construction 109 109 11 68 588 Residential mortgage 5,302 5,632 702 2,572 2,597 Consumer and other 119 119 49 — — Total acquired 7,505 7,924 1,067 2,970 3,516 Total impaired loans $ 30,763 $ 31,137 $ 4,658 $ 19,854 $ 20,355
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: Year Ended December 31, 2016 2015 Average Recorded Investment Interest Income Average Recorded Investment Interest Income Impaired loans with allowance: (Dollars in thousands) Commercial real estate $ 10,356 $ 357 $ 12,060 $ 395 Commercial construction 1,494 43 1,765 71 Commercial and industrial 1,679 56 1,405 58 Residential construction 369 5 415 14 Residential mortgage 10,988 248 9,477 186 Consumer and other 28 — 51 — Total impaired loans with allowance $ 24,914 $ 709 $ 25,173 $ 724 Impaired loans with no allowance: Commercial real estate $ 13,887 $ 428 $ 18,477 $ 524 Commercial construction 1,820 562 2,111 59 Commercial and industrial 464 — 509 — Residential construction 68 — 118 33 Residential mortgage 6,041 42 10,262 47 Consumer and other 20 — 44 — Total impaired loans with no allowance $ 22,300 $ 1,032 $ 31,521 $ 663
Aging Analysis of the Recorded Investment	The following tables present an aging analysis of the recorded investment in the Company's loans: Current 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Loans December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 2,074,100 $ 573 $ 504 $ — $ 1,657 $ 2,076,834 Commercial construction 458,576 387 — — 435 459,398 Commercial and industrial 368,025 490 — — 772 369,287 Leases 29,529 — — — — 29,529 Residential construction 92,784 418 — — — 93,202 Residential mortgage 592,975 2,368 425 115 3,783 599,666 Consumer and other 17,644 102 25 — — 17,771 Total originated 3,633,633 4,338 954 115 6,647 3,645,687 Acquired: Commercial real estate 814,277 2,816 1,556 — 2,237 820,886 Commercial construction 102,727 294 90 — 710 103,821 Commercial and industrial 130,937 713 161 — 163 131,974 Residential construction 21,613 — — — — 21,613 Residential mortgage 714,386 5,473 1,036 — 4,879 725,774 Consumer and other 5,903 47 5 — — 5,955 Total acquired 1,789,843 9,343 2,848 — 7,989 1,810,023 Total loans $ 5,423,476 $ 13,681 $ 3,802 $ 115 $ 14,636 $ 5,455,710 Current 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Non-Accrual Total Loans December 31, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,571,034 $ 800 $ 564 $ — $ 3,157 $ 1,575,555 Commercial construction 281,345 82 — — 164 281,591 Commercial and industrial 279,116 89 21 — 269 279,495 Leases 26,773 — — — — 26,773 Residential construction 59,631 — — — 306 59,937 Residential mortgage 480,251 1,714 203 — 2,727 484,895 Consumer and other 12,958 12 — — — 12,970 Total originated 2,711,108 2,697 788 — 6,623 2,721,216 Acquired: Commercial real estate 664,153 893 1,139 — 4,275 670,460 Commercial construction 82,994 10 20 — 394 83,418 Commercial and industrial 139,130 69 250 3 169 139,621 Residential construction 15,891 — 16 — 177 16,084 Residential mortgage 552,348 3,266 1,010 — 6,939 563,563 Consumer and other 5,295 77 5 — 132 5,509 Total acquired 1,459,811 4,315 2,440 3 12,086 1,478,655 Total loans $ 4,170,919 $ 7,012 $ 3,228 $ 3 $ 18,709 $ 4,199,871
Recorded Investment by Credit Quality Indicator	The following tables present the recorded investment in the Company’s loans by credit quality indicator: Pass Special Mention Substandard Doubtful Loss Total December 31, 2016 (Dollars in thousands) Originated: Commercial real estate $ 2,004,386 $ 55,028 $ 17,420 $ — $ — $ 2,076,834 Commercial construction 451,314 5,354 2,730 — — 459,398 Commercial and industrial 363,028 3,209 3,050 — — 369,287 Leases 29,486 43 — — — 29,529 Residential construction 92,831 371 — — — 93,202 Residential mortgage 568,875 21,669 9,122 — — 599,666 Consumer and other 17,426 336 9 — — 17,771 Total originated 3,527,346 86,010 32,331 — — 3,645,687 Acquired: Commercial real estate 755,908 31,145 33,629 204 — 820,886 Commercial construction 87,857 6,867 8,994 103 — 103,821 Commercial and industrial 122,637 3,170 6,167 — — 131,974 Residential construction 20,912 — 701 — — 21,613 Residential mortgage 670,683 37,181 17,747 163 — 725,774 Consumer and other 5,875 80 — — — 5,955 Total acquired 1,663,872 78,443 67,238 470 — 1,810,023 Total loans $ 5,191,218 $ 164,453 $ 99,569 $ 470 $ — $ 5,455,710 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (Dollars in thousands) Originated: Commercial real estate $ 1,499,554 $ 48,775 $ 27,226 $ — $ — $ 1,575,555 Commercial construction 272,960 6,434 2,197 — — 281,591 Commercial and industrial 270,116 4,855 4,524 — — 279,495 Leases 26,773 — — — — 26,773 Residential construction 59,265 24 648 — — 59,937 Residential mortgage 453,544 20,440 10,911 — — 484,895 Consumer and other 12,566 394 10 — — 12,970 Total originated 2,594,778 80,922 45,516 — — 2,721,216 Acquired: Commercial real estate 596,973 31,318 42,169 — — 670,460 Commercial construction 69,473 5,655 8,163 127 — 83,418 Commercial and industrial 127,911 3,273 8,437 — — 139,621 Residential construction 14,541 470 1,073 — — 16,084 Residential mortgage 504,836 38,763 19,716 248 — 563,563 Consumer and other 5,244 133 132 — — 5,509 Total acquired 1,318,978 79,612 79,690 375 — 1,478,655 Total loans $ 3,913,756 $ 160,534 $ 125,206 $ 375 $ — $ 4,199,871
Summary of Loans Modified as TDRs	The following tables provide a summary of loans modified as TDRs: Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated December 31, 2016 (Dollars in thousands) Commercial real estate $ 2,048 $ 173 $ 2,221 $ 125 Commercial construction 765 — 765 — Commercial and industrial 379 — 379 37 Residential mortgage 4,492 — 4,492 286 Consumer and other 9 — 9 1 Total modifications $ 7,693 $ 173 $ 7,866 $ 449 Number of contracts 25 4 29 Accrual Nonaccrual Total TDRs Allowance for Loan Losses Allocated December 31, 2015 (Dollars in thousands) Commercial real estate $ 5,938 $ 720 $ 6,658 $ 331 Commercial construction 893 46 939 16 Commercial and industrial 1,186 — 1,186 484 Residential mortgage 6,691 14 6,705 1 Consumer and other 10 — 10 564 Total modifications $ 14,718 $ 780 $ 15,498 $ 1,396 Number of contracts 35 3 38
New TDRs 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. Year Ended December 31, 2016 2015 Term Payment Interest Only Total Term Payment Interest Only Combination Total (Dollars in thousands) Commercial real estate $ — $ 314 $ 261 $ 575 $ 1,820 $ — $ 358 $ 863 $ 3,041 Commercial and industrial 433 — — 433 93 419 231 — 743 Residential mortgage — — 271 271 149 — — — 149 Total modifications $ 433 $ 314 $ 532 $ 1,279 $ 2,062 $ 419 $ 589 $ 863 $ 3,933
Loan Sale Activity On Single Family Residential First Mortgage Loans Originated For Sale On A Presold Basis	Loan sale activity is summarized below: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Loans held for sale at period end $ 43,731 $ 39,470 $ 37,280 Proceeds from sales of mortgage loans originated for sale 359,613 367,959 292,845 Gain on sales of mortgage loans originated for sale 10,506 9,825 8,037

Goodwill and Other Intangible32

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Other Intangible Assets	The following table presents activity for goodwill and other intangible assets: Goodwill Other Intangibles Total (Dollars in thousands) Balance at December 31, 2014 $ 69,749 $ 13,952 $ 83,701 Acquisitions 64,937 8,312 73,249 Amortization — (3,965 ) (3,965 ) Balance at December 31, 2015 134,686 18,299 152,985 Acquisitions 95,110 12,527 107,637 Amortization — (4,915 ) (4,915 ) Purchase price allocation recast - Valley 1,741 — 1,741 Purchase price allocation recast - Certus branches 3,232 — 3,232 Balance at December 31, 2016 $ 234,769 $ 25,911 $ 260,680
Schedule of Finite-Lived Intangible Assets	The following table presents the gross carrying amount and accumulated amortization for the Company’s other intangible assets, which primarily consists of core deposit intangibles and also includes customer relationship intangibles acquired in connection with the acquisition of High Point: December 31, 2016 2015 (Dollars in thousands) Gross carrying amount $ 40,463 $ 27,936 Accumulated amortization (14,552 ) (9,637 ) Net book value $ 25,911 $ 18,299
Schedule of Estimated Future Amortization Expense	The following table presents estimated future amortization expense for other intangible assets: (Dollars in thousands) 2017 $ 5,924 2018 5,408 2019 4,899 2020 4,126 2021 2,830 Thereafter 2,724 Total $ 25,911

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Premises and Equipment	The following table presents a summary of the Company’s premises and equipment: December 31, 2016 2015 (Dollars in thousands) Land and land improvements $ 52,259 $ 35,731 Buildings and leasehold improvements 105,479 73,192 Furniture, fixtures and equipment 35,828 28,858 Construction in progress 6,828 2,879 Premises and equipment, gross 200,394 140,660 Less accumulated depreciation and amortization (33,898 ) (27,692 ) Premises and equipment, net $ 166,496 $ 112,968
Schedule of Future Minimum Rental Payments for Operating Leases	At December 31, 2016, future minimum rental commitments under non-cancellable operating leases are as follows: (Dollars in thousands) 2017 $ 5,460 2018 4,852 2019 4,253 2020 3,285 2021 3,040 Thereafter 14,393 Total $ 35,283

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The following table presents the fair value of the Company’s derivatives: December 31, 2016 2015 Notional Amount Balance Sheet Location Fair Value Notional Amount Balance Sheet Location Fair Value Derivative assets: (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps $ 70,777 Other assets $ 1,224 $ 63,320 Other assets $ 1,332 Derivative liabilities: Derivatives designated as hedging instruments: Interest rate swap $ 125,000 Accrued expenses and other liabilities $ 557 $ 125,000 Accrued expenses and other liabilities $ 1,085 Derivatives not designated as hedging instruments: Interest rate swaps $ 70,777 Accrued expenses and other liabilities $ 1,224 $ 63,320 Accrued expenses and other liabilities $ 1,332
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 December 31, 2016 (Dollars in thousands) Derivative assets $ 1,224 $ — $ 1,224 $ — $ — $ 2,679 Derivative liabilities 1,781 — 1,781 — 1,781 — Total derivative instruments $ 3,005 $ — $ 3,005 $ — $ 1,781 $ 2,679 December 31, 2015 Derivative assets $ 1,332 $ — $ 1,332 $ — $ — $ 1,332 Derivative liabilities 2,417 — 2,417 — 2,417 — Total derivative instruments $ 3,749 $ — $ 3,749 $ — $ 2,417 $ 1,332
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents the amounts recorded in the Consolidated Statements of Comprehensive Income relating to derivative instruments designated as cash flow hedges, net of tax: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Amount of net gains (losses) recorded in OCI (effective portion) $ 333 $ (489 ) $ (1,923 ) 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.

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Scheduled Maturities of Time Deposits	The following tables present the scheduled maturities of time deposits at December 31, 2016: Less than $100,000 $100,000 and Greater Total (Dollars in thousands) 2017 $ 334,038 $ 862,090 $ 1,196,128 2018 46,005 245,870 291,875 2019 13,365 36,294 49,659 2020 10,652 7,733 18,385 2021 2,997 5,019 8,016 Thereafter — — — Total $ 407,057 $ 1,157,006 $ 1,564,063

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Short-term Borrowings	The following table presents the Company’s short-term borrowings: December 31, 2016 2015 (Dollars in thousands) Repurchase agreements (1) $ 70,704 $ 64,373 Federal funds purchased 20,000 19,839 Advances from FHLB 77,600 4,000 Revolving credit facility — 15,000 Total short-term borrowings $ 168,304 $ 103,212 (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.
Additional Information on Short -term Borrowings	Additional information on the Company’s short-term borrowings is presented in the following table: Years Ended December 31, 2016 2015 2014 (Dollars in thousands) Maximum outstanding at any month-end during the year $ 168,304 $ 203,682 $ 195,941 Average outstanding balance 77,060 122,619 96,043 Average interest rate for the year 0.86 % 0.47 % 0.45 % Average interest rate at year end 0.79 % 0.27 % 0.28 %
Long-term Debt	The following table presents the Company’s long-term debt: December 31, 2016 2015 (Dollars in thousands) Advances from FHLB, net (1) $ 86,626 $ 81,371 Subordinated notes, net (1) 70,648 70,790 Junior subordinated debentures, net (1) 44,374 36,190 Total long-term debt $ 201,648 $ 188,351 (1) Long-term debt balances are presented net of debt issuance costs and unamortized premiums or discounts.
Junior Subordinated Debentures Outstanding	The following table details the junior subordinated debentures outstanding: December 31, Shares issued Interest rate Maturity date 2016 2015 (Dollars in thousands) BNC Bancorp Capital Trust I 5,000 LIBOR plus 3.25% 4/15/2033 $ 5,155 $ 5,155 BNC Bancorp Capital Trust II 6,000 LIBOR plus 2.80% 4/7/2034 6,186 6,186 BNC Capital Trust III 5,000 LIBOR plus 2.40% 9/23/2034 5,155 5,155 BNC Capital Trust IV 7,000 LIBOR plus 1.70% 12/31/2036 7,217 7,217 Southcoast Capital Trust III 10,000 LIBOR plus 1.50% 9/30/2035 10,310 — Valley Financial (VA) Statutory Trust I 4,000 LIBOR plus 3.10% 6/26/2033 4,124 4,124 Valley Financial (VA) Statutory Trust II 7,000 LIBOR plus 1.49% 12/15/2035 7,217 7,217 Valley Financial Statutory Trust III 5,000 LIBOR plus 1.73% 1/30/2037 5,155 5,155 50,519 40,209 Unamortized discount 5,970 3,833 Unamortized debt issuance costs 175 186 $ 44,374 $ 36,190

Accumulated Other Comprehensi37

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2016
Accumulated Other Comprehensive Income [Abstract]
Changes in Accumulated Other Comprehensive Income	The following table presents the changes in accumulated other comprehensive income, net of income taxes: Unrealized Holding Gains on Investment Securities Available-For-Sale Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity Unrealized Holding 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 (1,333 ) — (489 ) (1,822 ) Reclassifications from accumulated other comprehensive income (529 ) (502 ) — (1,031 ) Net current period other comprehensive loss (1,862 ) (502 ) (489 ) (2,853 ) Balance at December 31, 2015 5,227 2,787 (685 ) 7,329 Other comprehensive loss before reclassifications (4,731 ) — 333 (4,398 ) Reclassifications from accumulated other comprehensive income (4 ) (1,089 ) — (1,093 ) Net current period other comprehensive loss (4,735 ) (1,089 ) 333 (5,491 ) Balance at December 31, 2016 $ 492 $ 1,698 $ (352 ) $ 1,838
Reclassification Adjustments from Accumulated Other Comprehensive Income	The following table details reclassification adjustments from accumulated other comprehensive income: Year Ended December 31, Component of Accumulated Other Comprehensive Income 2016 2015 Affected Line Item in the Consolidated Statement of Income (Dollars in thousands) Unrealized holding gains on investment securities available-for-sale $ 5 $ 839 Gain (loss) on sale of investment securities, net (1 ) (310 ) Income tax expense 4 529 Total, net of tax Unrealized holding gains on investment securities transferred from available-for-sale to held-to-maturity (1) 1,729 797 Interest income - investment securities (640 ) (295 ) Income tax expense 1,089 502 Total, net of tax Total reclassifications for the period $ 1,093 $ 1,031 (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 Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
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 December 31, 2016 (Dollars in thousands) Assets: Investment securities available-for-sale: U.S. Government agencies $ 25,394 $ — $ 25,394 $ — State and municipals 208,705 — 208,705 — Corporate debt securities 50,838 — 50,838 — Asset backed securities 163,751 — 163,751 — Equity securities 15,535 10,272 5,263 — Mortgage-backed securities: Residential government sponsored 113,949 — 113,949 — Other government sponsored 952 — 952 — Total investment securities available-for-sale 579,124 10,272 568,852 — Derivative instruments: Interest rate swaps - not designated 1,224 — 1,224 — Total derivative instruments 1,224 — 1,224 — Total assets measured at fair value on a recurring basis $ 580,348 $ 10,272 $ 570,076 $ — Liabilities: Interest rate swap - cash flow hedge $ 557 $ — $ 557 $ — Interest rate swaps - not designated 1,224 — 1,224 — Total liabilities measured at fair value on a recurring basis $ 1,781 $ — $ 1,781 $ — Total Measured at Fair Value Fair Value Measured Using Description Level 1 Level 2 Level 3 December 31, 2015 (Dollars in thousands) Assets: Investment securities available-for-sale: U.S. Government agencies $ 12,327 $ — $ 12,327 $ — State and municipals 180,618 — 180,618 — Corporate debt securities 47,703 — 47,703 — Other debt securities 138,747 — 138,747 — Equity securities 11,273 637 10,636 — Mortgage-backed securities: Residential government sponsored 97,777 — 97,777 — Other government sponsored 1,695 — 1,695 — Total investment securities available-for-sale 490,140 637 489,503 — Derivative instruments: Interest rate swap - not designated 1,332 — 1,332 — Total derivative instruments 1,332 — 1,332 — Total assets measured at fair value on a recurring basis $ 491,472 $ 637 $ 490,835 $ — Liabilities: Interest rate swap - cash flow hedge $ 1,085 $ — $ 1,085 $ — Interest rate swap - not designated 1,332 — 1,332 — Total liabilities measured at fair value on a recurring basis $ 2,417 $ — $ 2,417 $ —
Assets and Liabilities Measured on Nonrecurring Basis	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 December 31, 2016 (Dollars in thousands) Loans held for sale $ 43,731 $ — $ 43,731 $ — Impaired loans 162,121 — — 162,121 OREO 26,489 — — 26,489 Total assets measured at fair value on a nonrecurring basis $ 232,341 $ — $ 43,731 $ 188,610 December 31, 2015 Loans held for sale $ 39,470 $ — $ 39,470 $ — Impaired loans 185,974 — — 185,974 OREO 32,561 — — 32,561 Total assets measured at fair value on a nonrecurring basis $ 258,005 $ — $ 39,470 $ 218,535
Valuation and Unobservable Inputs for Level 3 Assets and Liabilities Measured on Nonrecurring Basis	The following table presents the valuation and unobservable inputs for Level 3 assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2016: Description Fair Value (in thousands) Valuation Methodology Unobservable Inputs Range of Inputs Impaired loans $ 162,121 Appraised value Discount to reflect current market conditions and ultimate collectability 0% - 20% OREO 26,489 Appraised value Discount to reflect current market conditions 0% - 20%
Carrying Value and Estimated Fair Values of Financial Instruments	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 December 31, 2016 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 260,182 $ 260,182 $ 260,182 $ — $ — Investment securities available-for-sale 579,124 579,124 10,272 568,852 — Investment securities held-to-maturity 317,662 312,808 — 312,808 — Federal Home Loan Bank stock 13,180 13,180 — 13,180 — Loans held for sale 43,731 43,731 — 43,731 — Loans receivable, net 5,418,209 5,444,530 — 5,282,409 162,121 Accrued interest receivable 22,020 22,020 — 22,020 — Investment in bank-owned life insurance 202,005 202,005 — 202,005 — Interest rate swaps - not designated 1,224 1,224 — 1,224 — Financial liabilities: Demand deposits and savings 4,518,914 4,518,914 — 4,518,914 — Time deposits 1,564,063 1,575,697 — 1,575,697 — Short-term borrowings 168,304 168,304 — 168,304 — Long-term debt 201,648 190,851 — 190,851 — Accrued interest payable 2,273 2,273 — 2,273 — Interest rate swap - cash flow hedge 557 557 — 557 — Interest rate swaps - not designated 1,224 1,224 — 1,224 — Carrying Value Fair Value Level 1 Level 2 Level 3 December 31, 2015 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 204,238 $ 204,238 $ 204,238 $ — $ — Investment securities available-for-sale 490,140 490,140 637 489,503 — Investment securities held-to-maturity 244,417 249,679 — 249,679 — Federal Home Loan Bank stock 8,171 8,171 — 8,171 — Loans held for sale 39,470 39,470 — 39,470 — Loans receivable, net 4,168,224 4,228,455 — 4,042,481 185,974 Accrued interest receivable 18,055 18,055 — 18,055 — FDIC indemnification asset 1,909 1,909 — — 1,909 Investment in bank-owned life insurance 116,806 116,806 — 116,806 — Interest rate swaps - not designated 1,332 1,332 — 1,332 — Financial liabilities: Demand deposits and savings 3,143,369 3,143,369 — 3,143,369 — Time deposits 1,598,838 1,611,707 — 1,611,707 — Short-term borrowings 103,212 103,212 — 103,212 — Long-term debt 188,351 183,062 — 183,062 — Accrued interest payable 2,002 2,002 — 2,002 — Interest rate swap - cash flow hedge 1,085 1,085 — 1,085 — Interest rate swaps - not designated 1,332 1,332 — 1,332 —

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2016
BNC
Entity Information [Line Items]
Regulatory Capital Ratios	The following tables present BNC’s regulatory capital ratios: For capital adequacy purposes To be well capitalized under prompt corrective action provisions Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio December 31, 2016 (Dollars in thousands) Total capital (to total risk-weighted assets) $ 757,413 12.37 % $ 528,305 8.625 % $ 612,528 10.00 % Tier 1 capital (to total risk-weighted assets) 719,663 11.75 % 405,800 6.625 % 490,022 8.00 % Tier 1 leverage (to total adjusted quarterly average assets) 719,663 10.45 % 275,513 4.00 % 344,391 5.00 % CET1 (to total risk-weighted assets) 719,663 11.75 % 313,921 5.125 % 398,143 6.50 % For capital adequacy purposes To be well capitalized under prompt corrective action provisions Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio December 31, 2015 (Dollars in thousands) Total capital (to risk weighted assets) $ 548,238 11.61 % $ 377,812 8.00 % $ 472,265 10.00 % Tier 1 capital (to risk weighted assets) 516,547 10.94 % 283,359 6.00 % 377,812 8.00 % Tier 1 capital (to average assets) 516,547 9.80 % 210,868 4.00 % 263,585 5.00 % CET1 (to total risk-weighted assets) 516,547 10.94 % 212,519 4.50 % 306,973 6.50 %
BNC Bancorp
Entity Information [Line Items]
Regulatory Capital Ratios	The following table presents the Company’s regulatory capital ratios: December 31, 2016 2015 Total capital (to total risk-weighted assets) 13.03 % 12.19 % Tier 1 capital (to total risk-weighted assets) 11.28 % 10.05 % Tier 1 leverage (to total adjusted quarterly average assets) 10.03 % 9.01 % CET1 (to total risk-weighted assets) 10.54 % 9.32 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Tax Expense	The following tables present the Company’s income tax expense: Year Ended December 31, 2016 2015 2014 Current income tax expense: (Dollars in thousands) Federal $ 13,083 $ 5,234 $ 9,159 State 2,290 2,342 1,257 Total current income tax expense 15,373 7,576 10,416 Deferred income tax expense (benefit): Federal 10,330 9,161 (1,181 ) State 1,241 2,012 1,130 Total deferred income tax expense (benefit) 11,571 11,173 (51 ) Total income tax expense $ 26,944 $ 18,749 $ 10,365
Effective Income Tax Rate Reconciliation	The following tables present the difference between income tax expense and the amount computed by applying the statutory income tax rate: Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Tax at statutory federal tax rate $ 31,450 $ 22,120 $ 13,517 Federal income tax revaluation — (1,182 ) — State income tax, net of federal benefit 1,908 2,406 1,575 State income tax revaluation, net of federal benefit 388 424 — Tax exempt interest income (5,077 ) (4,752 ) (4,485 ) Income from life insurance (1,777 ) (958 ) (810 ) Capital loss carryforward expiration — 1,444 — Change in valuation allowance (455 ) (1,462 ) — Non-deductible merger and acquisition expenses 572 375 411 Other (65 ) 334 157 Total income tax expense $ 26,944 $ 18,749 $ 10,365
Deferred Tax Assets and Liabilities	Significant components of deferred tax assets and liabilities were as follows: December 31, 2016 2015 Deferred income tax assets: (Dollars in thousands) Allowance for loan losses $ 12,762 $ 10,727 Net operating loss carryforwards 10,627 6,574 Deferred compensation 9,257 3,738 Unrealized loss on derivatives 206 401 OREO writedowns 8,656 4,975 AMT credit carryforward 11,988 13,555 FDIC acquisitions — 3,428 Interest on nonaccrual loans — 424 Stock-based compensation 1,665 1,320 Fair value adjustments from acquisitions 14,236 14,374 Other 4,548 1,991 Total deferred income tax assets 73,945 61,507 Deferred income tax liabilities: Premises and equipment 5,144 4,162 Leasing activities 1,928 873 Unrealized gains on investment securities and derivatives 1,286 4,706 Deferred loan costs and fees 4,960 3,159 Core deposit intangibles 8,659 6,153 FDIC acquisitions 680 — Other 1,435 2,036 Total deferred income tax liabilities 24,092 21,089 Less valuation allowance 989 1,444 Net deferred income tax asset $ 48,864 $ 38,974

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Off-Balance Sheet Sheet Financial Instruments	The following table presents the outstanding off-balance sheet financial instruments whose contract amounts represent potential credit risk: December 31, 2016 2015 (Dollars in thousands) Commitments under unfunded loans and lines of credit $ 1,448,453 $ 1,010,497 Letters of credit 14,611 14,213

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Activity	A summary of the Company’s stock option activity for the year ended December 31, 2016 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, 2015 152,571 $ 9.69 Issued — — Exercised 82,125 9.58 Forfeited or expired — — Outstanding at December 31, 2016 70,446 $ 9.82 1.53 $ 1,555 Exercisable at December 31, 2016 70,422 $ 9.82 1.53 $ 1,555
Unvested Restricted Stock Awards	A summary of the activity of the Company’s unvested restricted stock awards for the year ended December 31, 2016 is presented below: Number of Shares Weighted Average Grant-Date Fair Value per Share Unvested at December 31, 2015 516,088 $ 15.78 Granted 523,265 29.26 Vested (133,727 ) 14.31 Forfeited (4,900 ) 19.94 Unvested at December 31, 2016 900,726 $ 23.80

Parent Company Financial Stat43

Parent Company Financial Statements (Tables) - BNC Bancorp	12 Months Ended
	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Condensed Balance Sheet	The following are condensed financial statements of the Parent Company as of and for the years ended December 31, 2016, 2015, and 2014: CONDENSED BALANCE SHEETS December 31, 2016 2015 Assets (Dollars in thousands) Cash and due from banks $ 30,808 $ 39,888 Investment in bank subsidiary 980,483 674,004 Investment in other subsidiaries 3,338 1,609 Other assets 2,521 387 Total assets $ 1,017,150 $ 715,888 Liabilities and shareholders' equity Short-term borrowings $ — $ 15,000 Long-term debt 115,021 108,207 Other liabilities 247 534 Total liabilities 115,268 123,741 Shareholders' equity: Common stock, no par value 709,935 448,728 Common stock, non-voting, no par value 33,507 33,507 Retained earnings 156,602 102,583 Stock in directors rabbi trust (4,737 ) (4,753 ) Directors deferred fees obligation 4,737 4,753 Accumulated other comprehensive income 1,838 7,329 Total shareholders' equity 901,882 592,147 Total liabilities and shareholders' equity $ 1,017,150 $ 715,888
Condensed Statements of Income	CONDENSED STATEMENTS OF INCOME Year Ended December 31, 2016 2015 2014 (Dollars in thousands) Dividends from bank subsidiary $ — $ 11,100 $ 29,612 Equity in undistributed earnings of bank subsidiary 67,907 38,779 3,336 Other income 688 662 647 Interest expense 5,487 4,596 2,796 Other expense 195 1,495 1,409 Net income $ 62,913 $ 44,450 $ 29,390
Condensed Statements of Cash Flows	CONDENSED STATEMENTS OF CASH FLOWS Year Ended December 31, 2016 2015 2014 Operating activities (Dollars in thousands) Net income $ 62,913 $ 44,450 $ 29,390 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (67,907 ) (38,779 ) (3,336 ) Amortization 251 157 452 Decrease (increase) in other assets 297 118 (1,323 ) (Decrease) increase in other liabilities (43,537 ) (420 ) 828 Net cash (used in) provided by operating activities (47,983 ) 5,526 26,011 Investing activities Investment in subsidiaries (1,419 ) (39,695 ) (37,903 ) Net cash received from acquisitions 4,493 1,289 — Net cash provided by (used in) investing activities 3,074 (38,406 ) (37,903 ) Financing activities Net (decrease) increase in short-term borrowings (15,000 ) 15,000 — Net (decrease) increase in long-term debt (120 ) (190 ) 31,125 Issuance of common stock 59,843 57,563 — Common stock issued from exercise of stock options, net of tax 720 1,776 173 Common stock issued pursuant to dividend reinvestment plan 276 301 336 Common stock repurchased — (3,622 ) (5,081 ) Common stock repurchased in lieu of income taxes (996 ) (699 ) (598 ) Cash dividends paid, net of accretion (8,894 ) (7,078 ) (5,738 ) Net cash provided by financing activities 35,829 63,051 20,217 Net (decrease) increase in cash and cash equivalents (9,080 ) 30,171 8,325 Cash and cash equivalents, beginning of period 39,888 9,717 1,392 Cash and cash equivalents, end of period $ 30,808 $ 39,888 $ 9,717

Acquisitions - Schedule of Reco

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Nov. 01, 2016	Jun. 17, 2016	Oct. 16, 2015	Jul. 01, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Liabilities [Abstract]
Goodwill					$ 234,769	$ 134,686	$ 69,749
High Point Bank Corporation
Liabilities [Abstract]
Total consideration paid	$ 141,264
Common stock issued	98,882
Cash payments to common shareholders	$ 42,382
High Point Bank Corporation | Common stock
Liabilities [Abstract]
Acquisitions, shares	4,034,743				4,034,743
High Point Bank Corporation | As Recorded by High Point
Assets
Cash	$ 100,457
Investment securities available-for-sale	147,723
Loans	467,953
Premises and equipment	20,691
Other real estate owned	176
Core deposit intangible	0
Other assets	59,476
Total assets acquired	796,476
Liabilities [Abstract]
Deposits	(667,791)
Borrowings	(18,664)
Other liabilities	(15,875)
Total liabilities assumed	(702,330)
Net assets acquired	94,146
High Point Bank Corporation | Fair Value Adjustments
Assets
Cash	0
Investment securities available-for-sale	1,965
Loans	(8,392)
Premises and equipment	3,338
Other real estate owned	0
Core deposit intangible	9,469
Other assets	0
Total assets acquired	6,380
Liabilities [Abstract]
Deposits	(112)
Borrowings	(138)
Other liabilities	(2,765)
Total liabilities assumed	(3,015)
Net assets acquired	3,365
High Point Bank Corporation | As Recorded By Acquirer
Assets
Cash	100,457
Investment securities available-for-sale	149,688
Loans	459,561
Premises and equipment	24,029
Other real estate owned	176
Core deposit intangible	9,469
Other assets	59,476
Total assets acquired	802,856
Liabilities [Abstract]
Deposits	(667,903)
Borrowings	(18,802)
Other liabilities	(18,640)
Total liabilities assumed	(705,345)
Net assets acquired	97,511
Total consideration paid	141,264
Goodwill	$ 43,753
Southcoast Financial Corporation
Liabilities [Abstract]
Total consideration paid		$ 98,970
Common stock issued		98,968
Cash payments to common shareholders		$ 2
Southcoast Financial Corporation | Common stock
Liabilities [Abstract]
Acquisitions, shares		4,310,445			4,310,445
Southcoast Financial Corporation | As Recorded by High Point
Assets
Cash		$ 24,019
Investment securities available-for-sale		30,607
Loans		365,232
Premises and equipment		19,585
Other real estate owned		306
Core deposit intangible		0
Other assets		23,082
Total assets acquired		462,831
Liabilities [Abstract]
Deposits		(335,924)
Borrowings		(69,300)
Other liabilities		(4,789)
Total liabilities assumed		(410,013)
Net assets acquired		52,818
Southcoast Financial Corporation | Fair Value Adjustments
Assets
Cash		0
Investment securities available-for-sale		(1,094)
Loans		(9,233)
Premises and equipment		2,304
Other real estate owned		0
Core deposit intangible		3,058
Other assets		845
Total assets acquired		(4,120)
Liabilities [Abstract]
Deposits		(175)
Borrowings		(1,255)
Other liabilities		(91)
Total liabilities assumed		(1,521)
Net assets acquired		(5,641)
Southcoast Financial Corporation | Recast Adjustments
Assets
Cash		0
Investment securities available-for-sale		692
Loans		0
Premises and equipment		0
Other real estate owned		0
Core deposit intangible		0
Other assets		(256)
Total assets acquired		436
Liabilities [Abstract]
Deposits		0
Borrowings		0
Other liabilities		0
Total liabilities assumed		0
Net assets acquired		436
Southcoast Financial Corporation | As Recorded By Acquirer
Assets
Cash		24,019
Investment securities available-for-sale		30,205
Loans		355,999
Premises and equipment		21,889
Other real estate owned		306
Core deposit intangible		3,058
Other assets		23,671
Total assets acquired		459,147
Liabilities [Abstract]
Deposits		(336,099)
Borrowings		(70,555)
Other liabilities		(4,880)
Total liabilities assumed		(411,534)
Net assets acquired		47,613
Total consideration paid		98,970
Goodwill		$ 51,357
CertusBank, N.A. | As Recorded by High Point
Assets
Cash			$ 1,297
Loans			186,354
Premises and equipment			8,542
Accrued interest receivable			443
Core deposit intangible			0
Other assets			11
Total assets acquired			196,647
Liabilities [Abstract]
Deposits			(175,783)
Other liabilities			(119)
Total liabilities assumed			(175,902)
Net assets acquired			20,745
CertusBank, N.A. | Fair Value Adjustments
Assets
Cash			0
Loans			(3,283)
Premises and equipment			698
Accrued interest receivable			0
Core deposit intangible			1,348
Other assets			734
Total assets acquired			(503)
Liabilities [Abstract]
Deposits			(260)
Other liabilities			(487)
Total liabilities assumed			(747)
Net assets acquired			(1,250)
CertusBank, N.A. | Recast Adjustments
Assets
Cash			0
Loans			(2,774)
Premises and equipment			0
Accrued interest receivable			0
Core deposit intangible			0
Other assets			(458)
Total assets acquired			(3,232)
Liabilities [Abstract]
Deposits			0
Other liabilities			0
Total liabilities assumed			0
Net assets acquired			(3,232)
CertusBank, N.A. | As Recorded By Acquirer
Assets
Cash			1,297
Loans			180,297
Premises and equipment			9,240
Accrued interest receivable			443
Core deposit intangible			1,348
Other assets			287
Total assets acquired			192,912
Liabilities [Abstract]
Deposits			(176,043)
Other liabilities			(606)
Total liabilities assumed			(176,649)
Net assets acquired			16,263
Total consideration paid			25,692
Goodwill			$ 9,429
Valley Financial Corporation
Liabilities [Abstract]
Total consideration paid				$ 108,700
Common stock issued				107,924
Fair value of stock options assumed				773
Cash payments to common shareholders				$ 3
Valley Financial Corporation | Common stock
Liabilities [Abstract]
Acquisitions, shares				5,500,697		5,500,697
Valley Financial Corporation | As Recorded by High Point
Assets
Cash				$ 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
Core deposit intangible				0
Other assets				31,297
Total assets acquired				844,340
Liabilities [Abstract]
Deposits				(646,053)
Borrowings				(141,087)
Other liabilities				(972)
Total liabilities assumed				(788,112)
Net assets acquired				56,228
Valley Financial Corporation | Fair Value Adjustments
Assets
Cash				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
Core deposit intangible				6,964
Other assets				3,641
Total assets acquired				(5,272)
Liabilities [Abstract]
Deposits				(1,086)
Borrowings				548
Other liabilities				(458)
Total liabilities assumed				(996)
Net assets acquired				(6,268)
Valley Financial Corporation | Recast Adjustments
Assets
Cash				0
Investment securities available-for-sale				0
Federal Home Loan Bank stock, at cost				0
Loans				(616)
Premises and equipment				0
Accrued interest receivable				0
Other real estate owned				(900)
Core deposit intangible				0
Other assets				(225)
Total assets acquired				(1,741)
Liabilities [Abstract]
Deposits				0
Borrowings				0
Other liabilities				0
Total liabilities assumed				0
Net assets acquired				(1,741)
Valley Financial Corporation | As Recorded By Acquirer
Assets
Cash				13,263
Investment securities available-for-sale				151,329
Federal Home Loan Bank stock, at cost				4,338
Loans				607,417
Premises and equipment				9,826
Accrued interest receivable				2,263
Other real estate owned				7,214
Core deposit intangible				6,964
Other assets				34,713
Total assets acquired				837,327
Liabilities [Abstract]
Deposits				(647,139)
Borrowings				(140,539)
Other liabilities				(1,430)
Total liabilities assumed				(789,108)
Net assets acquired				48,219
Total consideration paid				108,700
Goodwill				$ 60,481

Summary of Significant Accoun45

Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2016USD ($)branchsegment	Dec. 31, 2015USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of offices | branch	76
Cash and Securities Segregated under Federal and Other Regulations	$ 17,300,000	$ 9,900,000
Financing Receivable Days Principal or Interest Past Due Classified as Nonaccrual	90 days
Financing Receivable Minimum Balance for Annual Review	$ 1,000,000
Financing Receivable Minimum Balance for Annual Review Rated Substandard or Lower	$ 500,000
Number of Portfolio Segments | segment	2
Number of Components | segment	2
Financing Receivable Receivables Requiring Specific Reserves Threshold	$ 250,000
Loss Emergence Period	12 months
Other Assets	$ (91,913,000)	(77,012,000)
Long-term Debt	(201,648,000)	(188,351,000)
Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Assets		1,200,000
Long-term Debt		$ 1,200,000
Income Tax Benefit (Expense)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 700,000
Building
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Life of Premises and Equipment	40 years
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loss Emergence Period	18 months
Minimum | Core Deposits
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Life of Intangible Asset	7 years
Minimum | Furniture, Fixtures and Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Life of Premises and Equipment	3 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loss Emergence Period	23 months
Maximum | Core Deposits
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Life of Intangible Asset	10 years
Maximum | Furniture, Fixtures and Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Life of Premises and Equipment	10 years
NORTH CAROLINA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of offices | branch	41
SOUTH CAROLINA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of offices | branch	26
VIRGINIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of offices | branch	9

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Disclosures (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Combinations [Abstract]
Net interest income since acquisition	$ 12,177
Net interest income	245,266	$ 234,463
Non-interest income since acquisition	677
Non-interest income	47,133	50,248
Net income since acquisition	2,927
Net income	$ 73,482	$ 54,856
Basic (USD per share)	$ 1.46	$ 1.17
Diluted (USD per share)	$ 1.45	$ 1.17

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details)	Oct. 16, 2015USD ($)	Jul. 01, 2015USD ($)branch	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Nov. 01, 2016USD ($)	Jun. 17, 2016USD ($)
Business Acquisition [Line Items]
Transaction Costs				$ 16,900,000	$ 13,300,000	$ 9,000,000
High Point Bank Corporation
Business Acquisition [Line Items]
Expected tax deductible amount of goodwill							$ 0
Southcoast Financial Corporation
Business Acquisition [Line Items]
Expected tax deductible amount of goodwill								$ 0
Goodwill, Purchase Accounting Adjustments			$ 400,000
CertusBank, N.A.
Business Acquisition [Line Items]
Expected tax deductible amount of goodwill	$ 0
Goodwill, Purchase Accounting Adjustments	$ 3,200,000			3,232,000
Valley Financial Corporation
Business Acquisition [Line Items]
Expected tax deductible amount of goodwill		$ 0
Number of Branches Acquired | branch		9
Ratio of shares Issued Per Share of Acquired Entity		1.1081
Goodwill, Purchase Accounting Adjustments			$ 1,700,000	$ 1,741,000

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 62,913	$ 44,450	$ 29,390
Weighted average common shares - basic (in shares)	45,095,976	35,691,059	29,049,525
Add: Effect of dilutive Stock Rights (in shares)	88,935	91,187	102,352
Weighted average common shares - diluted (in shares)	45,184,911	35,782,246	29,151,877
Basic earnings per common share (USD per share)	$ 1.40	$ 1.25	$ 1.01
Diluted earnings per common share (USD per share)	$ 1.39	$ 1.24	$ 1.01
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	0

Investment Securities - Marketa

Investment Securities - Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 578,343	$ 481,844
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	5,910	11,939
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	5,129	3,643
Investment securities available-for-sale, at fair value	579,124	490,140
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	317,662	244,417
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	3,210	6,699
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	8,064	1,437
Investment securities held-to-maturity	312,808	249,679
U.S. Government agencies
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	25,610	12,025
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	118	302
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	334	0
Investment securities available-for-sale, at fair value	25,394	12,327
State and municipals
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	205,488	169,907
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	4,574	10,711
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	1,357	0
Investment securities available-for-sale, at fair value	208,705	180,618
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	50,440	48,392
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	523	0
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	125	689
Investment securities available-for-sale, at fair value	50,838	47,703
Asset-backed debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	164,497	140,773
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	342	15
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	1,088	2,041
Investment securities available-for-sale, at fair value	163,751	138,747
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	15,448	11,520
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	87	270
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	0	517
Investment securities available-for-sale, at fair value	15,535	11,273
Residential Government Sponsored Mortgage Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	115,933	97,611
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	241	562
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	2,225	396
Investment securities available-for-sale, at fair value	113,949	97,777
Other Mortgage-backed Securities, US Government Sponsored Enterprises
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	927	1,616
Available For Sale Debt Securities, Gross Unrealized Gain, Accumulated In Investments	25	79
Available For Sale Debt Securities, Gross Unrealized Loss, Accumulated In Investments	0	0
Investment securities available-for-sale, at fair value	952	1,695
State and municipals
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	295,573	228,417
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	2,613	6,698
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	8,064	477
Investment securities held-to-maturity	290,122	234,638
Corporate debt securities
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	22,089	16,000
Held To Maturity Securities, Accumulated Unrecognized Holding Gain	597	1
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	0	960
Investment securities held-to-maturity	$ 22,686	$ 15,041

Investment Securities - Investm

Investment Securities - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale, Amortized Cost:
Due after one through five years	$ 31,564
Due after five through ten years	128,057
Due after ten years	403,274
Total debt securities	562,895
Equity securities	15,448
Available-for-sale Securities, Amortized Cost	578,343	$ 481,844
Held-to-maturity, Amortized Cost:
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	16,032
Due after five through ten years	41,722
Due after ten years	259,908
Held-to-maturity Securities, Amortized Cost	317,662	244,417
Available-for-sale, Fair Value:
Due after one through five years	31,563
Due after five through ten years	127,999
Due after ten years	404,027
Total debt securities	563,589
Equity securities	15,535
Available-for-sale Securities, Fair Value	579,124	490,140
Held-to-maturity, Fair Value:
Due after one year through five years	15,996
Due after five through ten years	42,028
Due after ten years	254,784
Held-to-maturity Securities, Fair Value	$ 312,808	$ 249,679

Investment Securities - Schedul

Investment Securities - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 81,851	$ 119,358	$ 49,298
Gross realized gains on sales	596	939	481
Gross realized losses on sales	(591)	(55)	(992)
Total realized gains (losses), net	$ 5	$ 884	$ (511)

Investment Securities - Summary

Investment Securities - Summary of Investment Securities, Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2016USD ($)Security	Dec. 31, 2015USD ($)Security
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	212	56
Available-for-sale securities, less than 12 months, fair value	$ 257,536	$ 214,695
Available-for-sale securities, less than 12 months, unrealized losses	$ 4,054	$ 2,886
Available-for-sale securities, 12 months or more, number of securities | Security	20	6
Available-for-sale securities, 12 months or more, fair value	$ 67,099	$ 11,524
Available-for-sale securities, 12 months or more, unrealized losses	1,075	757
Available-for-sale securities, fair value	324,635	226,219
Available-for-sale securities, unrealized losses	5,129	$ 3,643
Held-to-maturity securities, less than 12 months, number of securities | Security		13
Held-to-maturity securities, less than 12 months, fair value		$ 20,658
Held-to-maturity securities, less than 12 months, unrealized losses		$ 210
Held-to-maturity securities, 12 months or more, number of securities | Security		21
Held-to-maturity securities, 12 months or more, fair value		$ 20,112
Held-to-maturity securities, 12 months or more, unrealized losses		1,227
Held-to-maturity securities, fair value		40,770
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	$ 8,064	$ 1,437
State and municipals
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	134
Available-for-sale securities, less than 12 months, fair value	$ 89,604
Available-for-sale securities, less than 12 months, unrealized losses	$ 1,357
Available-for-sale securities, 12 months or more, number of securities | Security	0
Available-for-sale securities, 12 months or more, fair value	$ 0
Available-for-sale securities, 12 months or more, unrealized losses	0
Available-for-sale securities, fair value	89,604
Available-for-sale securities, unrealized losses	$ 1,357
Corporate debt securities
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	3	6
Available-for-sale securities, less than 12 months, fair value	$ 16,755	$ 29,015
Available-for-sale securities, less than 12 months, unrealized losses	$ 121	$ 658
Available-for-sale securities, 12 months or more, number of securities | Security	1	1
Available-for-sale securities, 12 months or more, fair value	$ 4,325	$ 2,969
Available-for-sale securities, 12 months or more, unrealized losses	4	31
Available-for-sale securities, fair value	21,080	31,984
Available-for-sale securities, unrealized losses	$ 125	$ 689
Asset-backed debt securities
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	9	29
Available-for-sale securities, less than 12 months, fair value	$ 33,888	$ 114,305
Available-for-sale securities, less than 12 months, unrealized losses	$ 119	$ 1,726
Available-for-sale securities, 12 months or more, number of securities | Security	17	1
Available-for-sale securities, 12 months or more, fair value	$ 60,255	$ 4,486
Available-for-sale securities, 12 months or more, unrealized losses	969	315
Available-for-sale securities, fair value	94,143	118,791
Available-for-sale securities, unrealized losses	$ 1,088	$ 2,041
Equity securities
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	8	1
Available-for-sale securities, less than 12 months, fair value	$ 14,830	$ 5,200
Available-for-sale securities, less than 12 months, unrealized losses	$ 334	$ 175
Available-for-sale securities, 12 months or more, number of securities | Security	0	1
Available-for-sale securities, 12 months or more, fair value	$ 0	$ 637
Available-for-sale securities, 12 months or more, unrealized losses	0	342
Available-for-sale securities, fair value	14,830	5,837
Available-for-sale securities, unrealized losses	$ 334	$ 517
Mortgage-backed securities
Schedule of Investment Securities [Line Items]
Available-for-sale securities, less than 12 months, number of securities | Security	58	20
Available-for-sale securities, less than 12 months, fair value	$ 102,459	$ 66,175
Available-for-sale securities, less than 12 months, unrealized losses	$ 2,123	$ 327
Available-for-sale securities, 12 months or more, number of securities | Security	2	3
Available-for-sale securities, 12 months or more, fair value	$ 2,519	$ 3,432
Available-for-sale securities, 12 months or more, unrealized losses	102	69
Available-for-sale securities, fair value	104,978	69,607
Available-for-sale securities, unrealized losses	$ 2,225	$ 396
State and municipals
Schedule of Investment Securities [Line Items]
Held-to-maturity securities, less than 12 months, number of securities | Security	145	13
Held-to-maturity securities, less than 12 months, fair value	$ 169,782	$ 20,658
Held-to-maturity securities, less than 12 months, unrealized losses	$ 7,767	$ 210
Held-to-maturity securities, 12 months or more, number of securities | Security	7	20
Held-to-maturity securities, 12 months or more, fair value	$ 5,645	$ 17,072
Held-to-maturity securities, 12 months or more, unrealized losses	297	267
Held-to-maturity securities, fair value	175,427	37,730
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	8,064	$ 477
Corporate debt securities
Schedule of Investment Securities [Line Items]
Held-to-maturity securities, less than 12 months, number of securities | Security		0
Held-to-maturity securities, less than 12 months, fair value		$ 0
Held-to-maturity securities, less than 12 months, unrealized losses		$ 0
Held-to-maturity securities, 12 months or more, number of securities | Security		1
Held-to-maturity securities, 12 months or more, fair value		$ 3,040
Held-to-maturity securities, 12 months or more, unrealized losses		960
Held-to-maturity securities, fair value		3,040
Held To Maturity Securities, Accumulated Unrecognized Holding Loss	$ 0	$ 960

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015
State and municipals
Schedule of Investment Securities [Line Items]
Held-to-maturity Securities, Sold Security, at Carrying Value	$ 3.3	$ 0.6
Held-to-maturity Securities, Sold Security, Realized Gain (Loss)	0.2
Corporate debt securities
Schedule of Investment Securities [Line Items]
Held-to-maturity Securities, Sold Security, at Carrying Value	5.2
Held-to-maturity Securities, Sold Security, Realized Gain (Loss)	$ 0.1

Loans and Allowance for Loan 54

Loans and Allowance for Loan Losses - Schedule of Financing Receivables Originated and Acquired (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 5,455,710	$ 4,199,871
Financing Receivable Covered by Loss Sharing Agreement	0	40,900
Unpaid Principal Balance Of Covered Acquired Loans	0	41,400
Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	114,815	76,021
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,325,440	1,048,458
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	23,726	18,479
Total commercial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,991,729	3,056,913
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,897,720	2,246,015
Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	563,219	365,009
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	501,261	419,116
Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	29,529	26,773
Originated
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,645,687	2,721,216
Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	93,202	59,937
Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	599,666	484,895
Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	17,771	12,970
Originated | Total commercial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,935,048	2,163,414
Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,076,834	1,575,555
Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	459,398	281,591
Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	369,287	279,495
Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	29,529	26,773
Acquired
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,810,023	1,478,655
Acquired | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	21,613	16,084
Acquired | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	725,774	563,563
Acquired | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,955	5,509
Acquired | Total commercial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,056,681	893,499
Acquired | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	820,886	670,460
Acquired | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	103,821	83,418
Acquired | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	131,974	139,621
Acquired | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 0	$ 0

Loans and Allowance for Loan 55

Loans and Allowance for Loan Losses - Certain Loans Transferred During Acquisition (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Receivables [Abstract]
Contractually required payments receivable	$ 30,484
Contractual cash flows not expected to be collected (non-accretable)	(4,927)
Expected cash flows	25,557
Interest component of expected cash flows	(1,110)
Fair value of loans acquired	$ 24,447

Loans and Allowance for Loan 56

Loans and Allowance for Loan Losses - Activity of Purchased Loans with Credit Deterioration (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Activity of Loans Purchased with Credit Deterioration Rollforward [Roll Forward]
Balance at beginning of period	$ 142,671	$ 150,382
Purchased loans acquired	24,447	28,803
Accretion	4,394	5,311
Transfer to other real estate owned	3,254	2,455
Net payments received	40,460	36,359
Net charge-offs	574	781
Other activity, net	335	(2,230)
Balance at end of period	$ 127,559	$ 142,671

Loans and Allowance for Loan 57

Loans and Allowance for Loan Losses - Summary of Changes in Accretable Difference on Purchased Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 2,853	$ 4,418
Accretion	(4,394)	(5,311)
Accretable difference acquired	1,110	601
Loans sold	0	(483)
Changes in expected future cash flows	3,491	3,628
Balance at end of period	$ 3,060	$ 2,853

Loans and Allowance for Loan 58

Loans and Allowance for Loan Losses - Loan Activity with Related Parties (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 18,059
Additional borrowings	41,428
Loan repayments	(32,423)
Balance at end of year	$ 27,064

Loans and Allowance for Loan 59

Loans and Allowance for Loan Losses - Analysis of Allowance for Loan Losses by Class of Financing Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	$ 31,647	$ 30,399
Charge-offs	(3,327)	(5,368)
Recoveries	4,464	5,794
Provision	4,665	1,896	$ 7,006
Change in FDIC Indemnification Asset	52	(1,074)
Loans and leases, Allowance, Ending Balance	37,501	31,647	30,399
Net Provision For Loan Losses On Covered Loans	(500)	(400)
Provision for Loan and Lease Losses Covered by the FDIC	600	1,500
Impaired loans				$ 2,375	$ 4,658
Purchase credit impaired loans				2,401	2,559
Total specific reserves				4,776	7,217
General reserves				32,725	24,430
Total	31,647	30,399	30,399	37,501	31,647
Individually evaluated for impairment				39,338	50,520
Purchase credit impaired loans				127,559	142,671
Loans collectively evaluated for impairment				5,288,813	4,006,680
Loans and Leases Receivable, Net				5,455,710	4,199,871
Residential construction
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	466	570
Charge-offs	0	0
Recoveries	53	117
Provision	248	(224)
Change in FDIC Indemnification Asset	0	3
Loans and leases, Allowance, Ending Balance	767	466	570
Impaired loans				0	53
Purchase credit impaired loans				146	5
Total specific reserves				146	58
General reserves				621	408
Total	466	570	570	767	466
Individually evaluated for impairment				0	825
Purchase credit impaired loans				501	709
Loans collectively evaluated for impairment				114,314	74,487
Loans and Leases Receivable, Net				114,815	76,021
Residential mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	8,201	9,313
Charge-offs	(722)	(2,228)
Recoveries	1,645	1,234
Provision	(217)	543
Change in FDIC Indemnification Asset	216	(661)
Loans and leases, Allowance, Ending Balance	9,123	8,201	9,313
Impaired loans				1,255	1,562
Purchase credit impaired loans				1,084	971
Total specific reserves				2,339	2,533
General reserves				6,784	5,668
Total	8,201	9,313	9,313	9,123	8,201
Individually evaluated for impairment				14,738	18,158
Purchase credit impaired loans				39,881	41,336
Loans collectively evaluated for impairment				1,270,821	988,964
Loans and Leases Receivable, Net				1,325,440	1,048,458
Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	320	191
Charge-offs	(147)	(362)
Recoveries	97	232
Provision	57	249
Change in FDIC Indemnification Asset	(23)	10
Loans and leases, Allowance, Ending Balance	304	320	191
Impaired loans				1	49
Purchase credit impaired loans				2	6
Total specific reserves				3	55
General reserves				301	265
Total	320	191	191	304	320
Individually evaluated for impairment				9	129
Purchase credit impaired loans				107	199
Loans collectively evaluated for impairment				23,610	18,151
Loans and Leases Receivable, Net				23,726	18,479
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	13,471	12,685
Charge-offs	(969)	(2,366)
Recoveries	768	1,013
Provision	2,375	2,087
Change in FDIC Indemnification Asset	(4)	52
Loans and leases, Allowance, Ending Balance	15,641	13,471	12,685
Impaired loans				607	2,166
Purchase credit impaired loans				811	1,176
Total specific reserves				1,418	3,342
General reserves				14,223	10,129
Total	13,471	12,685	12,685	15,641	13,471
Individually evaluated for impairment				19,602	26,498
Purchase credit impaired loans				73,515	85,213
Loans collectively evaluated for impairment				2,804,603	2,134,304
Loans and Leases Receivable, Net				2,897,720	2,246,015
Commercial construction
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	4,525	4,311
Charge-offs	(89)	(127)
Recoveries	1,049	1,859
Provision	542	(1,220)
Change in FDIC Indemnification Asset	(106)	(298)
Loans and leases, Allowance, Ending Balance	5,921	4,525	4,311
Impaired loans				147	182
Purchase credit impaired loans				321	354
Total specific reserves				468	536
General reserves				5,453	3,989
Total	4,525	4,311	4,311	5,921	4,525
Individually evaluated for impairment				3,145	3,223
Purchase credit impaired loans				11,556	12,497
Loans collectively evaluated for impairment				548,518	349,289
Loans and Leases Receivable, Net				563,219	365,009
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	4,586	3,226
Charge-offs	(1,400)	(285)
Recoveries	852	1,339
Provision	1,483	486
Change in FDIC Indemnification Asset	(31)	(180)
Loans and leases, Allowance, Ending Balance	5,490	4,586	3,226
Impaired loans				365	646
Purchase credit impaired loans				37	47
Total specific reserves				402	693
General reserves				5,088	3,893
Total	4,586	3,226	3,226	5,490	4,586
Individually evaluated for impairment				1,844	1,687
Purchase credit impaired loans				1,999	2,717
Loans collectively evaluated for impairment				497,418	414,712
Loans and Leases Receivable, Net				501,261	419,116
Leases
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases, Allowance, Beginning Balance	78	103
Charge-offs	0	0
Recoveries	0	0
Provision	177	(25)
Change in FDIC Indemnification Asset	0	0
Loans and leases, Allowance, Ending Balance	255	78	103
Impaired loans				0	0
Purchase credit impaired loans				0	0
Total specific reserves				0	0
General reserves				255	78
Total	$ 78	$ 103	$ 103	255	78
Individually evaluated for impairment				0	0
Purchase credit impaired loans				0	0
Loans collectively evaluated for impairment				29,529	26,773
Loans and Leases Receivable, Net				$ 29,529	$ 26,773

Loans and Allowance for Loan 60

Loans and Allowance for Loan Losses - Schedule of Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	$ 20,211	$ 30,763
Impaired Loans - With Allowance, Unpaid Principal Balance	20,818	31,137
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	2,375	4,658
Impaired Loans - With No Related Allowance, Recorded Investment	19,224	19,854
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	19,209	20,355
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	14,620	23,258
Impaired Loans - With Allowance, Unpaid Principal Balance	14,554	23,213
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	1,298	3,591
Impaired Loans - With No Related Allowance, Recorded Investment	16,007	16,884
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	15,953	16,839
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	5,591	7,505
Impaired Loans - With Allowance, Unpaid Principal Balance	6,264	7,924
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	1,077	1,067
Impaired Loans - With No Related Allowance, Recorded Investment	3,217	2,970
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	3,256	3,516
Residential construction | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment		343
Impaired Loans - With Allowance, Unpaid Principal Balance		342
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated		42
Impaired Loans - With No Related Allowance, Recorded Investment		306
Impaired Loans - With No Related Allowance, Unpaid Principal Balance		306
Residential construction | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment		109
Impaired Loans - With Allowance, Unpaid Principal Balance		109
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated		11
Impaired Loans - With No Related Allowance, Recorded Investment		68
Impaired Loans - With No Related Allowance, Unpaid Principal Balance		588
Residential mortgage | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	4,921	8,159
Impaired Loans - With Allowance, Unpaid Principal Balance	4,885	8,141
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	482	860
Impaired Loans - With No Related Allowance, Recorded Investment	4,275	2,154
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	4,271	2,145
Residential mortgage | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	3,913	5,302
Impaired Loans - With Allowance, Unpaid Principal Balance	4,396	5,632
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	773	702
Impaired Loans - With No Related Allowance, Recorded Investment	1,649	2,572
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	1,677	2,597
Consumer and other | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	8	10
Impaired Loans - With Allowance, Unpaid Principal Balance	8	10
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	1	1
Impaired Loans - With No Related Allowance, Recorded Investment	0	0
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	0	0
Consumer and other | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	119
Impaired Loans - With Allowance, Unpaid Principal Balance	6	119
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	0	49
Impaired Loans - With No Related Allowance, Recorded Investment	0	0
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	0	0
Commercial real estate | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	7,230	11,750
Impaired Loans - With Allowance, Unpaid Principal Balance	7,208	11,736
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	448	1,990
Impaired Loans - With No Related Allowance, Recorded Investment	10,040	13,099
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	9,993	13,068
Commercial real estate | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	1,179	1,374
Impaired Loans - With Allowance, Unpaid Principal Balance	1,192	1,390
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	159	175
Impaired Loans - With No Related Allowance, Recorded Investment	1,224	330
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	1,236	331
Commercial construction | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	1,247	1,537
Impaired Loans - With Allowance, Unpaid Principal Balance	1,244	1,533
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	102	123
Impaired Loans - With No Related Allowance, Recorded Investment	1,295	1,325
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	1,293	1,320
Commercial construction | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	264	369
Impaired Loans - With Allowance, Unpaid Principal Balance	278	370
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	45	59
Impaired Loans - With No Related Allowance, Recorded Investment	343	0
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	343	0
Commercial and industrial | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	1,214	1,459
Impaired Loans - With Allowance, Unpaid Principal Balance	1,209	1,451
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	265	575
Impaired Loans - With No Related Allowance, Recorded Investment	397	0
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	396	0
Commercial and industrial | Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Loans - With Allowance, Recorded Investment	235	232
Impaired Loans - With Allowance, Unpaid Principal Balance	392	304
Impaired Loans - With Allowance, Allowances for Loan Losses Allocated	100	71
Impaired Loans - With No Related Allowance, Recorded Investment	1	0
Impaired Loans - With No Related Allowance, Unpaid Principal Balance	$ 0	$ 0

Loans and Allowance for Loan 61

Loans and Allowance for Loan Losses - Schedule of Average Recorded Investments and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	$ 24,914	$ 25,173
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	709	724
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	22,300	31,521
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1,032	663
Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	369	415
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	5	14
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	68	118
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	33
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	10,988	9,477
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	248	186
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,041	10,262
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	42	47
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	28	51
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	20	44
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	10,356	12,060
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	357	395
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	13,887	18,477
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	428	524
Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,494	1,765
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	43	71
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,820	2,111
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	562	59
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,679	1,405
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	56	58
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	464	509
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	$ 0	$ 0

Loans and Allowance for Loan 62

Loans and Allowance for Loan Losses - Aging of Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	$ 5,423,476	$ 4,170,919
Financing Receivable, Recorded Investment, Nonaccrual Status	14,636	18,709
Loans and Leases Receivable, Net	5,455,710	4,199,871
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	13,681	7,012
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	3,802	3,228
Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	115	3
Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	114,815	76,021
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	1,325,440	1,048,458
Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	23,726	18,479
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	2,897,720	2,246,015
Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	563,219	365,009
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	501,261	419,116
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	29,529	26,773
Originated
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	3,633,633	2,711,108
Financing Receivable, Recorded Investment, Nonaccrual Status	6,647	6,623
Loans and Leases Receivable, Net	3,645,687	2,721,216
Originated | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	4,338	2,697
Originated | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	954	788
Originated | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	115	0
Originated | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	92,784	59,631
Financing Receivable, Recorded Investment, Nonaccrual Status	0	306
Loans and Leases Receivable, Net	93,202	59,937
Originated | Residential construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	418	0
Originated | Residential construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Residential construction | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	592,975	480,251
Financing Receivable, Recorded Investment, Nonaccrual Status	3,783	2,727
Loans and Leases Receivable, Net	599,666	484,895
Originated | Residential mortgage | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,368	1,714
Originated | Residential mortgage | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	425	203
Originated | Residential mortgage | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	115	0
Originated | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	17,644	12,958
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Net	17,771	12,970
Originated | Consumer and other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	102	12
Originated | Consumer and other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	25	0
Originated | Consumer and other | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	2,074,100	1,571,034
Financing Receivable, Recorded Investment, Nonaccrual Status	1,657	3,157
Loans and Leases Receivable, Net	2,076,834	1,575,555
Originated | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	573	800
Originated | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	504	564
Originated | Commercial real estate | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	458,576	281,345
Financing Receivable, Recorded Investment, Nonaccrual Status	435	164
Loans and Leases Receivable, Net	459,398	281,591
Originated | Commercial construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	387	82
Originated | Commercial construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Commercial construction | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	368,025	279,116
Financing Receivable, Recorded Investment, Nonaccrual Status	772	269
Loans and Leases Receivable, Net	369,287	279,495
Originated | Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	490	89
Originated | Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	21
Originated | Commercial and industrial | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	29,529	26,773
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Loans and Leases Receivable, Net	29,529	26,773
Originated | Leases | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Leases | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Originated | Leases | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	1,789,843	1,459,811
Financing Receivable, Recorded Investment, Nonaccrual Status	7,989	12,086
Loans and Leases Receivable, Net	1,810,023	1,478,655
Acquired | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	9,343	4,315
Acquired | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,848	2,440
Acquired | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	3
Acquired | Residential construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	21,613	15,891
Financing Receivable, Recorded Investment, Nonaccrual Status	0	177
Loans and Leases Receivable, Net	21,613	16,084
Acquired | Residential construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Residential construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	16
Acquired | Residential construction | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	714,386	552,348
Financing Receivable, Recorded Investment, Nonaccrual Status	4,879	6,939
Loans and Leases Receivable, Net	725,774	563,563
Acquired | Residential mortgage | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	5,473	3,266
Acquired | Residential mortgage | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	1,036	1,010
Acquired | Residential mortgage | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	5,903	5,295
Financing Receivable, Recorded Investment, Nonaccrual Status	0	132
Loans and Leases Receivable, Net	5,955	5,509
Acquired | Consumer and other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	47	77
Acquired | Consumer and other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	5	5
Acquired | Consumer and other | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	814,277	664,153
Financing Receivable, Recorded Investment, Nonaccrual Status	2,237	4,275
Loans and Leases Receivable, Net	820,886	670,460
Acquired | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	2,816	893
Acquired | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	1,556	1,139
Acquired | Commercial real estate | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Commercial construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	102,727	82,994
Financing Receivable, Recorded Investment, Nonaccrual Status	710	394
Loans and Leases Receivable, Net	103,821	83,418
Acquired | Commercial construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	294	10
Acquired | Commercial construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	90	20
Acquired | Commercial construction | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	0
Acquired | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	130,937	139,130
Financing Receivable, Recorded Investment, Nonaccrual Status	163	169
Loans and Leases Receivable, Net	131,974	139,621
Acquired | Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	713	69
Acquired | Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	161	250
Acquired | Commercial and industrial | Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Total Past Due	0	3
Acquired | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net	$ 0	$ 0

Loans and Allowance for Loan 63

Loans and Allowance for Loan Losses - Financing Receivable Credit Quality indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 5,455,710	$ 4,199,871
Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	114,815	76,021
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,325,440	1,048,458
Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	23,726	18,479
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,897,720	2,246,015
Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	563,219	365,009
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	501,261	419,116
Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	29,529	26,773
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,191,218	3,913,756
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	164,453	160,534
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	99,569	125,206
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	470	375
Loss
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,645,687	2,721,216
Originated | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	93,202	59,937
Originated | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	599,666	484,895
Originated | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	17,771	12,970
Originated | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,076,834	1,575,555
Originated | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	459,398	281,591
Originated | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	369,287	279,495
Originated | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	29,529	26,773
Originated | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,527,346	2,594,778
Originated | Pass | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	92,831	59,265
Originated | Pass | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	568,875	453,544
Originated | Pass | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	17,426	12,566
Originated | Pass | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,004,386	1,499,554
Originated | Pass | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	451,314	272,960
Originated | Pass | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	363,028	270,116
Originated | Pass | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	29,486	26,773
Originated | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	86,010	80,922
Originated | Special Mention | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	371	24
Originated | Special Mention | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	21,669	20,440
Originated | Special Mention | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	336	394
Originated | Special Mention | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	55,028	48,775
Originated | Special Mention | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,354	6,434
Originated | Special Mention | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,209	4,855
Originated | Special Mention | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	43	0
Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	32,331	45,516
Originated | Substandard | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	648
Originated | Substandard | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	9,122	10,911
Originated | Substandard | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	9	10
Originated | Substandard | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	17,420	27,226
Originated | Substandard | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	2,730	2,197
Originated | Substandard | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,050	4,524
Originated | Substandard | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Doubtful | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Originated | Loss | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,810,023	1,478,655
Acquired | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	21,613	16,084
Acquired | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	725,774	563,563
Acquired | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,955	5,509
Acquired | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	820,886	670,460
Acquired | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	103,821	83,418
Acquired | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	131,974	139,621
Acquired | Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	1,663,872	1,318,978
Acquired | Pass | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	20,912	14,541
Acquired | Pass | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	670,683	504,836
Acquired | Pass | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	5,875	5,244
Acquired | Pass | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	755,908	596,973
Acquired | Pass | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	87,857	69,473
Acquired | Pass | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	122,637	127,911
Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	78,443	79,612
Acquired | Special Mention | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	470
Acquired | Special Mention | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	37,181	38,763
Acquired | Special Mention | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	80	133
Acquired | Special Mention | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	31,145	31,318
Acquired | Special Mention | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	6,867	5,655
Acquired | Special Mention | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	3,170	3,273
Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	67,238	79,690
Acquired | Substandard | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	701	1,073
Acquired | Substandard | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	17,747	19,716
Acquired | Substandard | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	132
Acquired | Substandard | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	33,629	42,169
Acquired | Substandard | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	8,994	8,163
Acquired | Substandard | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	6,167	8,437
Acquired | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	470	375
Acquired | Doubtful | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Doubtful | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	163	248
Acquired | Doubtful | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	204	0
Acquired | Doubtful | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	103	127
Acquired | Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Residential construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	0	0
Acquired | Loss | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Net	$ 0	$ 0

Loans and Allowance for Loan 64

Loans and Allowance for Loan Losses - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)contract	Dec. 31, 2015USD ($)contract
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 7,866	$ 15,498
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	$ 449	$ 1,396
Number of contracts | contract	29	38
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 4,492	$ 6,705
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	286	1
Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	9	10
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	1	564
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,221	6,658
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	125	331
Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	765	939
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	0	16
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	379	1,186
Financing Receivables, Modifications, Allowance For Loan Losses Allocated	37	484
Accrual
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 7,693	$ 14,718
Number of contracts | contract	25	35
Accrual | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 4,492	$ 6,691
Accrual | Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	9	10
Accrual | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,048	5,938
Accrual | Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	765	893
Accrual | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	379	1,186
Nonaccrual
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 173	$ 780
Number of contracts | contract	4	3
Nonaccrual | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 0	$ 14
Nonaccrual | Consumer and other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccrual | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	173	720
Nonaccrual | Commercial construction
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	46
Nonaccrual | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 0	$ 0

Loans and Allowance for Loan 65

Loans and Allowance for Loan Losses - Troubled Debt Restructurings by Modification Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,279	$ 3,933
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	575	3,041
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	433	743
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	271	149
Term
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	433	2,062
Term | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	1,820
Term | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	433	93
Term | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	149
Payment
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	314	419
Payment | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	314	0
Payment | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	419
Payment | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Interest Only
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	532	589
Interest Only | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	261	358
Interest Only | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	231
Interest Only | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 271	0
Combination
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		863
Combination | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		863
Combination | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		0
Combination | Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0

Loans and Allowance for Loan 66

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	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Loans held for sale at period end	$ 43,731	$ 39,470	$ 37,280
Proceeds from sales of mortgage loans originated for sale	359,613	367,959	292,845
Gain on sales of mortgage loans originated for sale	$ 10,506	$ 9,825	$ 8,037

Loans and Allowance for Loan 67

Loans and Allowance for Loan Losses - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 600,000	$ 900,000
Unpaid balance of loans acquired	808,500,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	791,100,000
Loans and Leases Receivable, Collateral for Secured Borrowings	2,250,000,000	1,680,000,000
Mortgage Loans in Process of Foreclosure, Amount	1,300,000	2,500,000
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0

Goodwill and Other Intangible68

Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) $ in Thousands	Oct. 16, 2015USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Goodwill
Beginning balance			$ 134,686	$ 69,749
Acquisitions			95,110	64,937
Ending balance			234,769	134,686	$ 69,749
Other Intangibles
Beginning balance			18,299	13,952
Acquisitions			12,527	8,312
Amortization			(4,915)	(3,965)	(2,340)
Ending balance			25,911	18,299	13,952
Goodwill and Other Intangible Assets
Beginning balance			152,985	83,701
Acquisitions			107,637	73,249
Ending balance			$ 260,680	$ 152,985	$ 83,701
Number of reporting units | segment			2
Valley Financial Corporation
Goodwill
Purchase price allocation recast		$ 1,700	$ 1,741
Other Intangibles
Purchase price allocation recast			0
Goodwill and Other Intangible Assets
Purchase price allocation recast			1,741
Certus branches
Goodwill
Purchase price allocation recast	$ 3,200		3,232
Other Intangibles
Purchase price allocation recast			0
Goodwill and Other Intangible Assets
Purchase price allocation recast			$ 3,232

Goodwill and Other Intangible69

Goodwill and Other Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Net book value	$ 25,911	$ 18,299	$ 13,952
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	40,463	27,936
Accumulated amortization	(14,552)	(9,637)
Net book value	$ 25,911	$ 18,299

Goodwill and Other Intangible70

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Weighted average Useful Life	5 years 8 months 16 days

Goodwill and Other Intangible71

Goodwill and Other Intangible Assets - Schedule of Future Definite Lived Intangible Amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
2,017	$ 5,924
2,018	5,408
2,019	4,899
2,020	4,126
2,021	2,830
Thereafter	2,724
Net book value	$ 25,911	$ 18,299	$ 13,952

Premises and Equipment - Schedu

Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Premises and Equipment [Abstract]
Land and Land Improvements	$ 52,259	$ 35,731
Buildings and Improvements, Gross	105,479	73,192
Furniture and Fixtures, Gross	35,828	28,858
Construction in Progress, Gross	6,828	2,879
Property, Plant and Equipment, Gross	200,394	140,660
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(33,898)	(27,692)
Property, Plant and Equipment, Net	$ 166,496	$ 112,968

Premises and Equipment - Sche73

Premises and Equipment - Schedule of Operating Lease Commitments (Details) $ in Thousands	Dec. 31, 2016USD ($)
Schedule of Minimum Operating Lease Payments [Abstract]
2,017	$ 5,460
2,018	4,852
2,019	4,253
2,020	3,285
2,021	3,040
Thereafter	14,393
Total	$ 35,283

Premises and Equipment - Narrat

Premises and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Premises and Equipment [Abstract]
Depreciation	$ 6,600	$ 6,100	$ 5,300
Impairment of premises and equipment	413	0	0
Operating Leases, Rent Expense, Net	$ 5,700	$ 5,500	$ 3,800

Derivatives - Schedule of Inter

Derivatives - Schedule of Interest Rate Derivatives (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Interest Rate Derivatives [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 3,005	$ 3,749
Not Designated as Hedging Instrument | Interest Rate Swap
Interest Rate Derivatives [Line Items]
Derivative Asset, Notional Amount	70,777	63,320
Derivative Liability, Notional Amount	70,777	63,320
Not Designated as Hedging Instrument | Interest Rate Swap | Other Assets
Interest Rate Derivatives [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,224	1,332
Not Designated as Hedging Instrument | Interest Rate Swap | Accrued Expenses and Other Liabilities
Interest Rate Derivatives [Line Items]
Derivative Liability, Fair Value, Gross Liability	1,224	1,332
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	$ 557	$ 1,085

Derivatives - Summary of Offset

Derivatives - Summary of Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 3,005	$ 3,749
Interest rate swaps - not designated	3,005	3,749
Derivative, Collateral, Right to Reclaim Cash	1,781	2,417
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	2,679	1,332
Derivative Assets
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,224	1,332
Interest rate swaps - not designated	1,224	1,332
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	2,679	1,332
Derivative Liabilities
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,781	2,417
Interest rate swaps - not designated	1,781	2,417
Derivative, Collateral, Right to Reclaim Cash	1,781	2,417
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	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount of net gains (losses) recorded in OCI (effective portion)	$ 333	$ (489)	$ (1,923)
Amount of net losses reclassified from OCI to earnings	$ 0	$ 0	$ 286

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative, Maturity Date	Mar. 18, 2019
Accumulated other comprehensive loss	$ (1,838,000)	$ (7,329,000)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	700,000
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	0	$ 0	$ 0
Derivative, Net Liability Position, Aggregate Fair Value	1,800,000
Collateral Already Posted, Aggregate Fair Value	6,400,000
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Derivative [Line Items]
Accumulated other comprehensive loss	400,000
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

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Time Deposits [Line Items]
2,017	$ 1,196,128
2,018	291,875
2,019	49,659
2,020	18,385
2,021	8,016
Thereafter	0
Time deposits	1,564,063	$ 1,598,838
Less than $100,000
Time Deposits [Line Items]
2,017	334,038
2,018	46,005
2,019	13,365
2,020	10,652
2,021	2,997
Thereafter	0
Time deposits	407,057
$100,000 and Greater
Time Deposits [Line Items]
2,017	862,090
2,018	245,870
2,019	36,294
2,020	7,733
2,021	5,019
Thereafter	0
Time deposits	$ 1,157,006

Borrowings - Schedule of Short

Borrowings - Schedule of Short Term Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Repurchase agreements	$ 70,704	$ 64,373
Federal funds purchased	20,000	19,839
Advances from FHLB	77,600	4,000
Revolving credit facility	0	15,000
Total short-term borrowings	$ 168,304	$ 103,212

Borrowings - Short-term Borrowi

Borrowings - Short-term Borrowings Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Line of credit	$ 0	$ 15,000,000
Line of Credit
Short-term Debt [Line Items]
Federal funds line of credit	$ 155,000,000
Line of Credit | Revolving Credit Facility
Short-term Debt [Line Items]
Expiration period	364 days
Maximum borrowing capacity	$ 25,000,000
Expiration date	Nov. 11, 2017
Interest rate (as percent)	3.25%
Line of credit	$ 0
Line of Credit | Federal Funds | Revolving Credit Facility
Short-term Debt [Line Items]
Spread on variable rate (as percent)	0.50%

Borrowings - Additional Informa

Borrowings - Additional Information on Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Maximum outstanding at any month-end during the year	$ 168,304	$ 203,682	$ 195,941
Average outstanding balance	$ 77,060	$ 122,619	$ 96,043
Short-term Debt Annual Weighted Average Interest Rate	0.86%	0.47%	0.45%
Average interest rate for the year (as percent)	0.79%	0.27%	0.28%

Borrowings - Schedule of Long-T

Borrowings - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Advances from FHLB, net	$ 86,626	$ 81,371
Subordinated notes, net	70,648	70,790
Junior subordinated debentures, net	44,374	36,190
Total long-term debt	$ 201,648	$ 188,351

Borrowings - Long-term Debt Nar

Borrowings - Long-term Debt Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 201,648,000	$ 188,351,000
Federal Funds Borrowed	0
Federal Reserve Bank | Investment Securities
Debt Instrument [Line Items]
Value of securities	2,800,000
Federal Reserve Bank | Commercial
Debt Instrument [Line Items]
Value of securities	453,800,000
Federal Home Loan Bank Advances | Federal Home Loan Bank
Debt Instrument [Line Items]
Long-term advances outstanding	$ 84,000,000
Average interest rate (as percent)	2.07%
Federal Home Loan Bank Advances | Federal Home Loan Bank | Real Estate
Debt Instrument [Line Items]
Value of securities	$ 1,790,000,000
Federal Home Loan Bank Advances | Federal Home Loan Bank | Investment Securities
Debt Instrument [Line Items]
Value of securities	5,700,000
Subordinated Notes | Subordinated Notes
Debt Instrument [Line Items]
Face value of debt issued	$ 60,000,000
Interest rate (as percent)	5.50%
Duration of fixed rate terms	5 years
Subordinated Notes | Subordinated Notes | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Spread on variable rate (as percent)	3.59%
Junior Subordinated Debt | Valley Financial Corporation
Debt Instrument [Line Items]
Long-term debt	$ 10,600,000
Effective percentage (as percent)	5.61%
Junior Subordinated Debt | Valley Financial Corporation | Minimum
Debt Instrument [Line Items]
Interest rate (as percent)	5.50%
Junior Subordinated Debt | Valley Financial Corporation | Maximum
Debt Instrument [Line Items]
Interest rate (as percent)	9.50%
Junior Subordinated Debt | London Interbank Offered Rate (LIBOR) | Valley Financial Corporation
Debt Instrument [Line Items]
Percentage bearing variable interest (as percent)	5.00%

Borrowings - Schedule of Junior

Borrowings - Schedule of Junior Subordinated Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Junior subordinated debentures, net	$ 44,374	$ 36,190
Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	50,519	40,209
Unamortized discount	5,970	3,833
Unamortized debt issuance costs	175	186
Junior subordinated debentures, net	$ 44,374	36,190
BNC Bancorp Capital Trust I
Short-term Debt [Line Items]
Shares issued (in shares)	5,000
BNC Bancorp Capital Trust I | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 5,155	5,155
BNC Bancorp Capital Trust I | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	3.25%
BNC Bancorp Capital Trust II
Short-term Debt [Line Items]
Shares issued (in shares)	6,000
BNC Bancorp Capital Trust II | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 6,186	6,186
BNC Bancorp Capital Trust II | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	2.80%
BNC Capital Trust III
Short-term Debt [Line Items]
Shares issued (in shares)	5,000
BNC Capital Trust III | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 5,155	5,155
BNC Capital Trust III | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	2.40%
BNC Capital Trust IV
Short-term Debt [Line Items]
Shares issued (in shares)	7,000
BNC Capital Trust IV | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 7,217	7,217
BNC Capital Trust IV | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	1.70%
Southcoast Capital Trust III
Short-term Debt [Line Items]
Shares issued (in shares)	10,000
Southcoast Capital Trust III | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 10,310	0
Southcoast Capital Trust III | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	1.50%
Valley Financial (VA) Statutory Trust I
Short-term Debt [Line Items]
Shares issued (in shares)	4,000
Valley Financial (VA) Statutory Trust I | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 4,124	4,124
Valley Financial (VA) Statutory Trust I | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	3.10%
Valley Financial (VA) Statutory Trust II
Short-term Debt [Line Items]
Shares issued (in shares)	7,000
Valley Financial (VA) Statutory Trust II | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 7,217	7,217
Valley Financial (VA) Statutory Trust II | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	1.49%
Valley Financial Statutory Trust III
Short-term Debt [Line Items]
Shares issued (in shares)	5,000
Valley Financial Statutory Trust III | Junior Subordinated Debt
Short-term Debt [Line Items]
Junior subordinated debentures, including unamortized discount and debt issuance costs	$ 5,155	$ 5,155
Valley Financial Statutory Trust III | London Interbank Offered Rate (LIBOR) | Junior Subordinated Debt
Short-term Debt [Line Items]
Spread on variable rate (as percent)	1.73%

Accumulated Other Comprehensi86

Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 592,147	$ 390,388
Ending balance	901,882	592,147
Accumulated other comprehensive income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	7,329	10,182
Other comprehensive loss before reclassifications	(4,398)	(1,822)
Reclassifications from accumulated other comprehensive income	(1,093)	(1,031)
Net current period other comprehensive loss	(5,491)	(2,853)
Ending balance	1,838	7,329
Unrealized Holding Gains on Investment Securities Available-For-Sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	5,227	7,089
Other comprehensive loss before reclassifications	(4,731)	(1,333)
Reclassifications from accumulated other comprehensive income	(4)	(529)
Net current period other comprehensive loss	(4,735)	(1,862)
Ending balance	492	5,227
Unrealized Holding Gains on Investment Securities Transferred from Available-For-Sale to Held-to-Maturity
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	2,787	3,289
Other comprehensive loss before reclassifications	0	0
Reclassifications from accumulated other comprehensive income	(1,089)	(502)
Net current period other comprehensive loss	(1,089)	(502)
Ending balance	1,698	2,787
Unrealized Holding Losses on Cash Flow Hedging Activities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(685)	(196)
Other comprehensive loss before reclassifications	333	(489)
Reclassifications from accumulated other comprehensive income	0	0
Net current period other comprehensive loss	333	(489)
Ending balance	$ (352)	$ (685)

Accumulated Other Comprehensi87

Accumulated Other Comprehensive Income - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense	$ (26,944)	$ (18,749)	$ (10,365)
Total reclassifications for the period	1,093	1,031
Unrealized holding gains on investment securities available-for-sale | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassifications for the period	4	529
Unrealized holding gains on 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]
Total reclassifications for the period	1,089	502
Gain (loss) on sale of investment securities, net | Unrealized holding gains on investment securities available-for-sale | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	5	839
Interest income - investment securities | Unrealized holding gains on 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	1,729	797
Income tax expense | Unrealized holding gains on investment securities available-for-sale | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense	(1)	(310)
Income tax expense | Unrealized holding gains on 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	$ (640)	$ (295)

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Fair Value, Assets and Liabilities, Measured on Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of assets transferred from Level 2 to Level 1		$ 5,400
Total investment securities available-for-sale	$ 579,124		$ 490,140
Total derivative instruments	3,005		3,749
Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions	4,100
U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	25,394		12,327
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	50,838		47,703
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	15,535		11,273
Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	113,949		97,777
Other Mortgage-backed Securities, US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	952		1,695
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	579,124		490,140
Total derivative instruments	1,224		1,332
Total assets measured at fair value on a recurring basis	580,348		491,472
Total liabilities measured at fair value on a recurring basis	1,781		2,417
Fair Value, Measurements, Recurring | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	25,394		12,327
Fair Value, Measurements, Recurring | State and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	208,705		180,618
Fair Value, Measurements, Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	50,838		47,703
Fair Value, Measurements, Recurring | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	163,751		138,747
Fair Value, Measurements, Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	15,535		11,273
Fair Value, Measurements, Recurring | Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	113,949		97,777
Fair Value, Measurements, Recurring | Other Mortgage-backed Securities, US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	952		1,695
Fair Value, Measurements, Recurring | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, not designated	1,224		1,332
Interest rate swap - cash flow hedge	557		1,085
Interest rate swaps - not designated	1,224		1,332
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	10,272		637
Total derivative instruments	0		0
Total assets measured at fair value on a recurring basis	10,272		637
Total liabilities measured at fair value on a recurring basis	0		0
Fair Value, Measurements, Recurring | Level 1 | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | State and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	10,272		637
Fair Value, Measurements, Recurring | Level 1 | Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | Other Mortgage-backed Securities, US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 1 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, not designated	0		0
Interest rate swap - cash flow hedge	0		0
Interest rate swaps - not designated	0		0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	568,852		489,503
Total derivative instruments	1,224		1,332
Total assets measured at fair value on a recurring basis	570,076		490,835
Total liabilities measured at fair value on a recurring basis	1,781		2,417
Fair Value, Measurements, Recurring | Level 2 | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	25,394		12,327
Fair Value, Measurements, Recurring | Level 2 | State and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	208,705		180,618
Fair Value, Measurements, Recurring | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	50,838		47,703
Fair Value, Measurements, Recurring | Level 2 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	163,751		138,747
Fair Value, Measurements, Recurring | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	5,263		10,636
Fair Value, Measurements, Recurring | Level 2 | Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	113,949		97,777
Fair Value, Measurements, Recurring | Level 2 | Other Mortgage-backed Securities, US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	952		1,695
Fair Value, Measurements, Recurring | Level 2 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, not designated	1,224		1,332
Interest rate swap - cash flow hedge	557		1,085
Interest rate swaps - not designated	1,224		1,332
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Total derivative instruments	0		0
Total assets measured at fair value on a recurring basis	0		0
Total liabilities measured at fair value on a recurring basis	0		0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | State and municipals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Residential Government Sponsored Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Other Mortgage-backed Securities, US Government Sponsored Enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available-for-sale	0		0
Fair Value, Measurements, Recurring | Level 3 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, not designated	0		0
Interest rate swap - cash flow hedge	0		0
Interest rate swaps - not designated	$ 0		$ 0

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Fair Value Measurements, Nonrecurring (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 43,731	$ 39,470
Impaired loans	162,121	185,974
OREO	26,489	32,561
Total assets measured at fair value on a nonrecurring basis	232,341	258,005
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
OREO	0	0
Total assets measured at fair value on a nonrecurring basis	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	43,731	39,470
Impaired loans	0	0
OREO	0	0
Total assets measured at fair value on a nonrecurring basis	43,731	39,470
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Impaired loans	162,121	185,974
OREO	26,489	32,561
Total assets measured at fair value on a nonrecurring basis	$ 188,610	$ 218,535

Fair Value Measurement - Summ90

Fair Value Measurement - Summary of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Appraisal Valuation | Impaired loans
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 162,121
Valuation Methodology	Appraised value
Appraisal Valuation | OREO
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
OREO	$ 26,489
Valuation Methodology	Appraised value
Appraisal Valuation | Minimum | Impaired loans
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range of inputs (as percent)	0.00%
Appraisal Valuation | Minimum | OREO
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range of inputs (as percent)	0.00%
Appraisal Valuation | Maximum | Impaired loans
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range of inputs (as percent)	20.00%
Appraisal Valuation | Maximum | OREO
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range of inputs (as percent)	20.00%
Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 162,121	$ 185,974
OREO	$ 26,489	$ 32,561

Fair Value Measurement - Summ91

Fair Value Measurement - Summary of Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available-for-sale, at fair value	$ 579,124	$ 490,140
Investment securities held-to-maturity	312,808	249,679
Accrued interest receivable	22,020	18,055
FDIC indemnification asset	0	1,909
Investment in bank-owned life insurance	202,005	116,806
Interest rate swaps - not designated	3,005	3,749
Time deposits	1,564,063	1,598,838
Short-term borrowings	168,304	103,212
Long-term debt	201,648	188,351
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	260,182	204,238
Investment securities available-for-sale, at fair value	579,124	490,140
Investment securities held-to-maturity	317,662	244,417
Federal Home Loan Bank stock	13,180	8,171
Loans held for sale	43,731	39,470
Loans receivable, net	5,418,209	4,168,224
Accrued interest receivable	22,020	18,055
FDIC indemnification asset		1,909
Investment in bank-owned life insurance	202,005	116,806
Demand deposits and savings	4,518,914	3,143,369
Time deposits	1,564,063	1,598,838
Short-term borrowings	168,304	103,212
Long-term debt	201,648	188,351
Accrued interest payable	2,273	2,002
Interest rate swap - cash flow hedge	557	1,085
Interest rate swaps - not designated	1,224	1,332
Carrying Value | Not Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps - not designated	1,224	1,332
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	260,182	204,238
Investment securities available-for-sale, at fair value	579,124	490,140
Investment securities held-to-maturity	312,808	249,679
Federal Home Loan Bank stock	13,180	8,171
Loans held for sale	43,731	39,470
Loans receivable, net	5,444,530	4,228,455
Accrued interest receivable	22,020	18,055
FDIC indemnification asset		1,909
Investment in bank-owned life insurance	202,005	116,806
Demand deposits and savings	4,518,914	3,143,369
Time deposits	1,575,697	1,611,707
Short-term borrowings	168,304	103,212
Long-term debt	190,851	183,062
Accrued interest payable	2,273	2,002
Interest rate swap - cash flow hedge	557	1,085
Interest rate swaps - not designated	1,224	1,332
Fair Value | Not Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps - not designated	1,224	1,332
Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	260,182	204,238
Investment securities available-for-sale, at fair value	10,272	637
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
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 - cash flow hedge	0	0
Interest rate swaps - not designated	0	0
Fair Value | Level 1 | Not Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps - not designated	0	0
Fair Value | 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	568,852	489,503
Investment securities held-to-maturity	312,808	249,679
Federal Home Loan Bank stock	13,180	8,171
Loans held for sale	43,731	39,470
Loans receivable, net	5,282,409	4,042,481
Accrued interest receivable	22,020	18,055
FDIC indemnification asset		0
Investment in bank-owned life insurance	202,005	116,806
Demand deposits and savings	4,518,914	3,143,369
Time deposits	1,575,697	1,611,707
Short-term borrowings	168,304	103,212
Long-term debt	190,851	183,062
Accrued interest payable	2,273	2,002
Interest rate swap - cash flow hedge	557	1,085
Interest rate swaps - not designated	1,224	1,332
Fair Value | Level 2 | Not Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps - not designated	1,224	1,332
Fair Value | 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	162,121	185,974
Accrued interest receivable	0	0
FDIC indemnification asset		1,909
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 - cash flow hedge	0	0
Interest rate swaps - not designated	0	0
Fair Value | Level 3 | Not Designated as Hedging Instrument | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps - not designated	$ 0	$ 0

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
BNC
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to total risk-weighted assets)	$ 757,413	$ 548,238
Capital to Risk Weighted Assets (as percent)	12.37%	11.61%
Capital Required for Capital Adequacy	$ 528,305	$ 377,812
Capital Required for Capital Adequacy to Risk Weighted Assets (as percent)	8.625%	8.00%
Capital Required to be Well Capitalized	$ 612,528	$ 472,265
Capital Required to be Well Capitalized to Risk Weighted Assets (as percent)	10.00%	10.00%
Tier 1 capital (to total risk-weighted assets)	$ 719,663	$ 516,547
Tier One Risk Based Capital to Risk Weighted Assets (as percent)	11.75%	10.94%
Tier One Risk Based Capital Required for Capital Adequacy	$ 405,800	$ 283,359
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets (as percent)	6.625%	6.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 490,022	$ 377,812
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets (as percent)	8.00%	8.00%
Tier 1 leverage (to total adjusted quarterly average assets)	10.45%	9.80%
Tier One Leverage Capital Required for Capital Adequacy	$ 275,513	$ 210,868
Tier One Leverage Capital Required for Capital Adequacy to Average Assets (as percent)	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 344,391	$ 263,585
Tier One Leverage Capital Required to be Well Capitalized to Average Assets (as percent)	5.00%	5.00%
CET1 (to total risk-weighted assets)	11.75%	10.94%
CET1 Capital Required to Capital Adequacy	$ 313,921	$ 212,519
CET1 Capital Required to Capital Adequacy to Risk Weighted Assets (as percent)	5.125%	4.50%
CET1 Capital Required to be Well Capitalized	$ 398,143	$ 306,973
CET1 Capital Required to be Well Capitalized to Risk Weighted Assets (as percent)	6.50%	6.50%
BNC Bancorp
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital to Risk Weighted Assets (as percent)	13.03%	12.19%
Tier One Risk Based Capital to Risk Weighted Assets (as percent)	11.28%	10.05%
Tier 1 leverage (to total adjusted quarterly average assets)	10.03%	9.01%
CET1 (to total risk-weighted assets)	10.54%	9.32%

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense:
Federal	$ 13,083	$ 5,234	$ 9,159
State	2,290	2,342	1,257
Total current income tax expense	15,373	7,576	10,416
Deferred income tax expense (benefit):
Federal	10,330	9,161	(1,181)
State	1,241	2,012	1,130
Total deferred income tax expense (benefit)	11,571	11,173	(51)
Total income tax expense	$ 26,944	$ 18,749	$ 10,365

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Federal Rate Reconciliation [Line Items]
Tax at statutory federal tax rate	$ 31,450	$ 22,120	$ 13,517
State income tax, net of federal benefit	1,908	2,406	1,575
Tax exempt interest income	(5,077)	(4,752)	(4,485)
Income from life insurance	(1,777)	(958)	(810)
Capital loss carryforward expiration	0	1,444	0
Change in valuation allowance	(455)	(1,462)	0
Non-deductible merger and acquisition expenses	572	375	411
Other	(65)	334	157
Total income tax expense	26,944	18,749	10,365
Federal
Income Tax Federal Rate Reconciliation [Line Items]
Federal income tax revaluation	0	(1,182)	0
State
Income Tax Federal Rate Reconciliation [Line Items]
Federal income tax revaluation	$ 388	$ 424	$ 0

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets:
Allowance for loan losses	$ 12,762	$ 10,727
Net operating loss carryforwards	10,627	6,574
Deferred compensation	9,257	3,738
Unrealized loss on derivatives	206	401
OREO writedowns	8,656	4,975
AMT credit carryforward	11,988	13,555
FDIC acquisitions	0	3,428
Interest on nonaccrual loans	0	424
Stock-based compensation	1,665	1,320
Fair value adjustments from acquisitions	14,236	14,374
Other	4,548	1,991
Total deferred income tax assets	73,945	61,507
Deferred income tax liabilities:
Premises and equipment	5,144	4,162
Leasing activities	1,928	873
Unrealized gains on investment securities and derivatives	1,286	4,706
Deferred loan costs and fees	4,960	3,159
Core deposit intangibles	8,659	6,153
FDIC acquisitions	680	0
Other	1,435	2,036
Total deferred income tax liabilities	24,092	21,089
Less valuation allowance	989	1,444
Net deferred income tax asset	$ 48,864	$ 38,974

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Valuation allowance	$ 989,000	$ 1,444,000
Operating loss carryforwards	26,100,000
Unrecognized tax benefits	$ 0	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Fair Value Off Balance Sheet Risks (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments under unfunded loans and lines of credit	$ 1,448,453	$ 1,010,497
Letters of credit	$ 14,611	$ 14,213

Commitments and Contingencies98

Commitments and Contingencies - Narrative (Details)	Dec. 31, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Amount committed to invest in VIEs	$ 18,300,000
Unfunded commitment to purchase VIEs	13,100,000
VIE, maximum loss exposure	$ 5,200,000

Employee Benefits - Disclosure

Employee Benefits - Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award (Details) - Employee Stock Option $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period (in shares) | shares	152,571
Issued (in shares) | shares	0
Exercised (in shares) | shares	82,125
Forfeited or expired (in shares) | shares	0
Outstanding, end of period (in shares) | shares	70,446
Exercisable (in shares) | shares	70,422
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 9.69
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	9.58
Forfeited or expired (in dollars per share) | $ / shares	0
Outstanding, end of period (in dollars per share) | $ / shares	9.82
Exercisable (in dollars per share) | $ / shares	$ 9.82
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term	1 year 6 months 11 days
Exercisable	1 year 6 months 11 days
Aggregate intrinsic value | $	$ 1,555
Aggregate intrinsic value, exercisable | $	$ 1,555

Employee Benefits - Schedule of

Employee Benefits - Schedule of Nonvested Restricted Stock Units Activity (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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)	516,088
Granted (in shares)	523,265
Vested (in shares)	(133,727)
Forfeited (in shares)	(4,900)
Restricted stock nonvested, end of period (in shares)	900,726	516,088
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 (in dollars per share)	$ 15.78
Granted (in dollars per share)	29.26
Vested (in dollars per share)	14.31
Forfeited (in dollars per share)	19.94
Restricted stock nonvested, end of period (in dollars per share)	$ 23.80	$ 15.78
Compensation expense for restricted stock awards	$ 3.5	$ 2.7	$ 2.2
Compensation cost not yet recognized	$ 17.6
Compensation cost not yet recognized, period	1 year 6 months 4 days
Fair value of restricted stock, vested in period	$ 1.9	$ 1.7	$ 1.7

Employee Benefits - Narrative (

Employee Benefits - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock options exercised		$ 720	$ 1,776	$ 173
Tax benefit realized for income tax deductions from stock option exercise		$ 700	300	$ 100
Required age for employees under profit sharing 401(k) plan		20 years 6 months
Company's contribution (as percent)				50.00%
Employer matching contribution (as percent)				6.00%
Vesting percentage of employee's contributions (as percent)	100.00%
Vesting percentage of employer's matching contribution (as percent)	100.00%			20.00%
Cost recognized		$ 2,300	2,000	$ 1,000
Compensation expense		4,600	500	400
Liabilities		$ 11,600	7,900
Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee agreement term		3 years
Employee agreement renewal term		1 year
Chief financial officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee agreement term		3 years
Employee agreement renewal term		1 year
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 200	$ 500	$ 100
Common stock (in shares)		361,055	367,885
Matching Level 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's contribution (as percent)	100.00%
Employer matching contribution (as percent)	3.00%
Matching Level 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's contribution (as percent)	50.00%
Employer matching contribution (as percent)	4.00%
Matching Level 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's contribution (as percent)	50.00%
Employer matching contribution (as percent)	5.00%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)		70,446	152,571
2006 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Rights issued (in shares)		66,000
2013 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)		861,933
Awards available for issuance (in shares)		354,105
KeySource Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)		44,236
Awards available for issuance (in shares)		35,607

Parent Company Financials - Con

Parent Company Financials - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 79,815	$ 54,319
Other assets	91,913	77,012
Total assets	7,401,691	5,666,956
Liabilities and shareholders' equity
Short-term borrowings	168,304	103,212
Long-term debt	201,648	188,351
Total liabilities	6,499,809	5,074,809
Shareholders' equity:
Common stock, no par value	709,935	448,728
Retained earnings	156,602	102,583
Stock in directors rabbi trust	(4,737)	(4,753)
Directors deferred fees obligation	4,737	4,753
Accumulated other comprehensive income	1,838	7,329
Total shareholders' equity	901,882	592,147	$ 390,388	$ 271,330
Total liabilities and shareholders' equity	7,401,691	5,666,956
Common stock - nonvoting
Shareholders' equity:
Common stock, no par value	33,507	33,507
BNC Bancorp
Assets
Cash and due from banks	30,808	39,888
Investment in bank subsidiary	980,483	674,004
Investment in other subsidiaries	3,338	1,609
Other assets	2,521	387
Total assets	1,017,150	715,888
Liabilities and shareholders' equity
Short-term borrowings	0	15,000
Long-term debt	115,021	108,207
Other liabilities	247	534
Total liabilities	115,268	123,741
Shareholders' equity:
Common stock, no par value	709,935	448,728
Retained earnings	156,602	102,583
Stock in directors rabbi trust	(4,737)	(4,753)
Directors deferred fees obligation	4,737	4,753
Accumulated other comprehensive income	1,838	7,329
Total shareholders' equity	901,882	592,147
Total liabilities and shareholders' equity	1,017,150	715,888
BNC Bancorp | Common stock - nonvoting
Shareholders' equity:
Common stock, no par value	$ 33,507	$ 33,507

Parent Company Financials - 103

Parent Company Financials - Condensed Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Income Statements, Captions [Line Items]
Interest expense	$ 36,021	$ 26,684	$ 19,926
Net income	62,913	44,450	29,390
BNC Bancorp
Condensed Income Statements, Captions [Line Items]
Dividends from bank subsidiary	0	11,100	29,612
Equity in undistributed earnings of bank subsidiary	67,907	38,779	3,336
Other income	688	662	647
Interest expense	5,487	4,596	2,796
Other expense	195	1,495	1,409
Net income	$ 62,913	$ 44,450	$ 29,390

Parent Company Financials - 104

Parent Company Financials - Condensed Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 62,913	$ 44,450	$ 29,390
Adjustments to reconcile net income to net cash provided by operating activities:
(Increase) decrease in other assets	(6,322)	(1,309)	1,664
Net cash provided by operating activities	53,338	54,433	38,463
Financing activities
Net (decrease) increase in short-term borrowings	33,268	(110,513)	(70,713)
Net (decrease) increase in long-term-debt	(43,438)	1,162	58,332
Issuance of common stock	59,843	57,563	0
Common stock issued from exercise of stock options, net of taxes	720	1,776	173
Common stock issued pursuant to dividend reinvestment plan	276	301	336
Common stock repurchased	0	(3,622)	(5,081)
Common stock repurchased in lieu of income taxes	(996)	(699)	(598)
Net cash provided by financing activities	(8,894)	(7,078)	(5,738)
Net cash provided by (used in) financing activities	378,448	463,055	(16,598)
Net increase (decrease) in cash and cash equivalents	55,944	119,044	(23,196)
Cash and cash equivalents, beginning of period	204,238	85,194	108,390
Cash and cash equivalents, end of period	260,182	204,238	85,194
BNC Bancorp
Operating activities
Net income	62,913	44,450	29,390
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries	(67,907)	(38,779)	(3,336)
Amortization	251	157	452
(Increase) decrease in other assets	297	118	(1,323)
(Decrease) increase in other liabilities	(43,537)	(420)	828
Net cash provided by operating activities	(47,983)	5,526	26,011
Investing activities
Investment in subsidiaries	(1,419)	(39,695)	(37,903)
Net cash received from acquisitions	4,493	1,289	0
Net cash provided by (used in) investing activities	3,074	(38,406)	(37,903)
Financing activities
Net (decrease) increase in short-term borrowings	(15,000)	15,000	0
Net (decrease) increase in long-term-debt	(120)	(190)	31,125
Issuance of common stock	59,843	57,563	0
Common stock issued from exercise of stock options, net of taxes	720	1,776	173
Common stock issued pursuant to dividend reinvestment plan	276	301	336
Common stock repurchased	0	(3,622)	(5,081)
Common stock repurchased in lieu of income taxes	(996)	(699)	(598)
Net cash provided by financing activities	(8,894)	(7,078)	(5,738)
Net cash provided by (used in) financing activities	35,829	63,051	20,217
Net increase (decrease) in cash and cash equivalents	(9,080)	30,171	8,325
Cash and cash equivalents, beginning of period	39,888	9,717	1,392
Cash and cash equivalents, end of period	$ 30,808	$ 39,888	$ 9,717

Subsequent Event (Details)

Subsequent Event (Details) - Common stock - Pinnacle - Subsequent event	Jan. 22, 2017
Subsequent Event [Line Items]
Equity interest to be acquired as part of Merger agreement (as percent)	100.00%
Conversion ratio	0.5235

Uncategorized Items - bncn-2016

Label	Element	Value
Security Owned and Pledged as Collateral, Fair Value	us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue	$ 371,800,000
Security Owned and Pledged as Collateral, Fair Value	us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue	$ 372,400,000