National Bank (NBHC) 10-Q 4 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 03, 2017
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	NBHC
Entity Registrant Name	National Bank Holdings Corp
Entity Central Index Key	1,475,841
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		26,791,575
Entity Current Reporting Status	Yes

Consolidated Statements of Fina

Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 129,827	$ 152,736
Investment securities available-for-sale (at fair value)	866,714	884,232
Investment securities held-to-maturity (at amortized cost)	294,891	332,505
Non-marketable securities	18,468	14,949
Loans	3,087,945	2,860,921
Allowance for loan losses	(34,959)	(29,174)
Loans, net	3,052,986	2,831,747
Loans held for sale	7,067	24,187
Other real estate owned	14,297	15,662
Premises and equipment, net	92,321	95,671
Goodwill	59,630	59,630
Intangible assets, net	4,210	6,949
Other assets	152,358	154,778
Total assets	4,692,769	4,573,046
Liabilities:
Non-interest bearing demand deposits	870,875	846,744
Interest bearing demand deposits	418,729	427,538
Savings and money market	1,441,372	1,422,321
Time deposits	1,126,481	1,172,046
Total deposits	3,857,457	3,868,649
Securities sold under agreements to repurchase	119,213	92,011
Federal Home Loan Bank advances	129,115	38,665
Other liabilities	42,497	37,532
Total liabilities	4,148,282	4,036,857
Shareholders' equity:
Common stock	515	514
Additional paid in capital	971,145	984,087
Retained earnings	68,570	55,454
Treasury stock at cost	(494,547)	(502,104)
Accumulated other comprehensive income (loss), net of tax	(1,196)	(1,762)
Total shareholders' equity	544,487	536,189
Total liabilities and shareholders' equity	$ 4,692,769	$ 4,573,046

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Investment securities held-to-maturity, fair value	$ 294,869	$ 332,573
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	400,000,000	400,000,000
Common Stock, shares issued	51,587,424	51,813,011
Common Stock, shares outstanding	26,788,833	26,386,583
Treasury stock, shares	24,542,527	24,927,157

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and dividend income:
Interest and fees on loans	$ 34,411	$ 30,071	$ 66,174	$ 63,027
Interest and dividends on investment securities	6,489	7,759	13,102	15,994
Dividends on non-marketable securities	218	193	385	421
Interest on interest-bearing bank deposits	214	449	411	584
Total interest and dividend income	41,332	38,472	80,072	80,026
Interest expense:
Interest on deposits	3,904	3,516	7,691	6,826
Interest on borrowings	536	203	767	409
Total interest expense	4,440	3,719	8,458	7,235
Net interest income before provision for loan losses	36,892	34,753	71,614	72,791
Provision for loan losses	4,025	6,457	5,820	17,076
Net interest income after provision for loan losses	32,867	28,296	65,794	55,715
Non-interest income:
Service charges	3,546	3,465	6,872	6,725
Bank card fees	3,134	2,935	5,938	5,702
Gain on sale of mortgages, net	594	958	1,048	1,432
Bank-owned life insurance income	472	486	942	881
Other non-interest income	4,124	2,473	5,538	3,164
OREO related write-ups and other income	86	187	314	523
Total non-interest income	11,956	10,504	20,652	18,427
Non-interest expense:
Salaries and benefits	19,909	19,612	40,299	40,224
Occupancy and equipment	5,242	5,708	10,679	11,774
Telecommunications and data processing	1,552	1,471	3,139	3,112
Marketing and business development	545	689	1,196	1,115
FDIC deposit insurance	686	1,064	1,391	1,985
Bank card expenses	896	963	1,779	1,876
Professional fees	1,270	978	1,686	1,434
Other non-interest expense	2,733	2,112	5,139	4,067
Problem asset workout	880	958	1,752	1,932
Gain on OREO sales, net	(1,644)	(1,611)	(1,756)	(2,043)
Intangible asset amortization	1,370	1,370	2,740	2,740
Total non-interest expense	33,439	33,314	68,044	68,216
Income before income taxes	11,384	5,486	18,402	5,926
Income tax expense	2,175	982	935	1,171
Net income	$ 9,209	$ 4,504	$ 17,467	$ 4,755
Income per share-basic (in dollars per share)	$ 0.34	$ 0.15	$ 0.65	$ 0.16
Income per share-diluted (in dollars per share)	$ 0.33	$ 0.15	$ 0.63	$ 0.16
Weighted average number of common shares outstanding:
Basic (Shares)	26,955,187	29,215,822	26,878,904	29,666,570
Diluted (Shares)	27,597,443	29,278,759	27,637,532	29,707,379

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,209	$ 4,504	$ 17,467	$ 4,755
Securities available-for-sale:
Net unrealized gains (losses) arising during the period, net of tax	1,014	3,221	1,276	12,198
Less: amortization of net unrealized holding gains to income, net of tax	(353)	(495)	(710)	(1,015)
Other comprehensive income (loss)	661	2,726	566	11,183
Comprehensive income (loss)	$ 9,870	$ 7,230	$ 18,033	$ 15,938

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Tax (expense) benefit on net unrealized gains arising during the period	$ (631)	$ (1,976)	$ (792)	$ (7,487)
Tax (expense) benefit of amortization of net unrealized holding gains to income	$ 217	$ 304	$ 435	$ 623

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common stock [Member]	Additional paid-in capital [Member]	Retained earnings [Member]	Treasury stock [Member]	Accumulated other comprehensive income, net [Member]	Total
Balance in the beginning at Dec. 31, 2015	$ 513	$ 997,926	$ 38,670	$ (419,660)	$ 95	$ 617,544
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,755			4,755
Stock-based compensation		1,791				1,791
Issuance under purchase and equity compensation plans, including (gain) loss on reissuance of treasury stock	1	(2,862)		2,422		(439)
Repurchase of shares				(32,918)		(32,918)
Cash dividends declared			(3,006)			(3,006)
Other comprehensive income (loss)					11,183	11,183
Balance in the ending at Jun. 30, 2016	514	996,855	40,419	(450,156)	11,278	598,910
Balance in the beginning at Dec. 31, 2016	514	984,087	55,454	(502,104)	(1,762)	536,189
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			17,467			17,467
Stock-based compensation		1,869				1,869
Issuance under purchase and equity compensation plans, including (gain) loss on reissuance of treasury stock	1	(12,878)		5,624		(7,253)
Cash dividends declared			(4,351)			(4,351)
Warrant exercise		(1,933)		1,933
Other comprehensive income (loss)					566	566
Balance in the ending at Jun. 30, 2017	$ 515	$ 971,145	$ 68,570	$ (494,547)	$ (1,196)	$ 544,487

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]
Excess tax benefit from stock-based compensation		$ 39
Gain (loss) on reissuance of treasury stock	$ 5,004	$ (50)
Shares repurchased (shares)		1,671,923
Cash dividends declared per share	$ 0.16	$ 0.1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 17,467	$ 4,755
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan losses	5,820	17,076
Depreciation and amortization	6,630	7,394
Current income tax receivable	1,622	6,395
Deferred income tax (asset) liability	(369)	3,710
Net excess tax (benefit) deficit on stock-based compensation	(3,393)	52
Discount accretion, net of premium amortization on securities	1,324	1,534
Loan accretion	(12,728)	(18,924)
Gain on sale of mortgage loans, net	(1,048)	(1,432)
Origination of loans held for sale, net of repayments	(39,279)	(44,593)
Proceeds from sales of loans held for sale	53,719	47,020
Bank-owned life insurance income	(942)	(881)
Gain on the sale of other real estate owned, net	(1,756)	(2,043)
Impairment on other real estate owned	46	104
Gain on sale of fixed assets	40	(1,839)
Gain on banking center divestitures	(2,886)
Stock-based compensation	1,869	1,791
(Increase) decrease in other assets	1,947	(6,210)
(Decrease) increase in other liabilities	6,547	12,639
Net cash provided by (used in) operating activities	34,630	26,548
Cash flows from investing activities:
Purchase of FHLB stock	(7,204)	(500)
Proceeds from redemption of FHLB stock	3,685	5,761
Proceeds from redemption of FRB stock		4,964
Proceeds from maturities of investment securities held-to-maturity	36,216	44,442
Proceeds from maturities of investment securities available-for-sale	115,268	134,464
Purchase of investment securities available-for-sale	(96,948)	(4,872)
Net increase in loans	(243,118)	(146,274)
Sales (purchases) of premises and equipment, net	(581)	1,718
Purchase of bank-owned life insurance		(10,344)
Proceeds from sales of loans	33,813	9,231
Proceeds from sales of other real estate owned	3,714	3,165
Net cash provided by (used in) investing activities	(155,155)	41,755
Cash flows from financing activities:
Net increase (decrease) in deposits	(8,308)	(39,732)
Increase (decrease) in repurchase agreements	27,202	(10,377)
Advances from FHLB	253,129
FHLB payoffs	(162,679)
Issuance of stock under purchase and equity compensation plans	(7,253)	(485)
Payment of dividends	(4,475)	(2,944)
Repurchase of shares		(32,918)
Net cash proivded by (used in) financing activities	97,616	(86,456)
Increase (decrease) in cash and cash equivalents	(22,909)	(18,153)
Cash and cash equivalents at beginning of the year	152,736	166,092
Cash and cash equivalents at end of year	129,827	147,939
Supplemental disclosure of cash flow information during the period:
Cash paid for interest	8,333	7,084
Net tax (refunds) payments	33	(2,117)
Supplemental schedule of non-cash investing activities:
Loans transferred to other real estate owned at fair value	639	3,654
Loans purchased but not settled	1,937	$ 667
Transfer of Loans Held-for-sale to Portfolio Loans	$ 3,729

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Note 1 Basis of Presentation National Bank Holdings Corporation ("NBHC" or the "Company") is a bank holding company that was incorporated in the State of Delaware in June 2009 with the intent to acquire and operate financial services franchises and other complementary businesses in targeted markets. The Company is headquartered immediately south of Denver, in Greenwood Village, Colorado, and its primary operations are conducted through its wholly owned subsidiary, NBH Bank, referred to as the Bank, or NBH Bank, a Colorado state-chartered bank and a member of the Federal Reserve System. The Company provides a variety of banking products to both commercial and consumer clients through a network of 86 banking centers located in Colorado, the greater Kansas City area and Texas, and through online and mobile banking products. The accompanying interim unaudited consolidated financial statements serve to update the National Bank Holdings Corporation Annual Report on Form 10-K for the year ended December 31, 2016 and include the accounts of the Company and its wholly owned subsidiary, NBH Bank. The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and where applicable, with general practices in the banking industry or guidelines prescribed by bank regulatory agencies. However, they may not include all information and notes necessary to constitute a complete set of financial statements under GAAP applicable to annual periods and accordingly should be read in conjunction with the financial information contained in the Company's most recent Form 10-K. The unaudited consolidated financial statements reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the results presented. All such adjustments are of a normal recurring nature. All significant intercompany balances and transactions have been eliminated in consolidation. Certain reclassifications of prior years' amounts are made whenever necessary to conform to current period presentation. The results of operations for the interim period is not necessarily indicative of the results that may be expected for the full year or any other interim period. All amounts are in thousands, except share data, or as otherwise noted. GAAP requires management to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosures of contingent assets and liabilities. By their nature, estimates are based on judgment and available information. Management has made significant estimates in certain areas, such as the amount and timing of expected cash flows from assets, the valuation of other real estate owned (“OREO”), the fair value adjustments on assets acquired and liabilities assumed, the valuation of core deposit intangible assets, the valuation of investment securities for other-than-temporary impairment (“OTTI”), the valuation of stock-based compensation, the fair values of financial instruments, the allowance for loan losses (“ALL”), and contingent liabilities. Because of the inherent uncertainties associated with any estimation process and future changes in market and economic conditions, it is possible that actual results could differ significantly from those estimates. The Company's significant accounting policies followed in the preparation of the unaudited consolidated financial statements are disclosed in note 2 of the audited financial statements and notes for the year ended December 31, 2016 and are contained in the Company's Annual Report on Form 10-K. There have not been any significant changes to the application of significant accounting policies since December 31, 2016

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2017
Text Block [Abstract]
Recent Accounting Pronouncements	Note 2 Recent Accounting Pronouncements Revenue from Contracts with Customers —In May 2014, the FASB issued ASU 2014-09, " Revenue from Contracts with Customers ." This update supersedes revenue recognition requirements in ASC Topic 605, Revenue Recognition , including most industry-specific revenue recognition guidance in the FASB Accounting Standards Codification. The new guidance stipulates that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides specific steps that entities should apply in order to achieve this principle. The amendments are effective for interim and annual periods beginning after December 15, 2017, with early application permitted for interim and annual periods beginning after December 15, 2016. ASU No. 2014-09 allows for either full retrospective or modified retrospective adoption. The Company is in the process of evaluating the impact of the ASU's adoption on the Company's consolidated financial statements, if any. The Company will adopt ASU 2014-09 in the first quarter of 2018 and expects to apply the modified retrospective approach. The new guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP; therefore, the Company does not expect the new guidance to have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company is continuing its overall assessment of revenue streams and reviewing contracts potentially affected by the ASU, most notably deposit service charges and bank card fees to determine the potential impact the new guidance is expected to have on the Company’s consolidated financial statements. In addition, the Company continues to follow certain implementation issues relevant to the banking industry which are still pending resolution. The Company will adopt ASU No. 2014-09 on January 1, 2018 and expects to utilize the modified retrospective approach. Leases —In February 2016, the FASB issued ASU 2016-02, Leases. The guidance in ASU 2016-02 supersedes the lease recognition requirements in ASC Topic 840, Leases . The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statements. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Early adoption of the amendments in the update is permitted. The Company will adopt ASU 2016-02 in the first quarter of 2019 and is currently in the process of evaluating the impact of the ASU's adoption on the Company's consolidated financial statements . Financial Instruments - Credit Losses —In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments . This update replaces the current incurred loss methodology for recognizing credit losses with a current expected credit loss model, which requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. This amendment broadens the information that an entity must consider in developing its expected credit loss estimates. Additionally, the update amends the accounting for credit losses for available-for-sale debt securities and purchased financial assets with a more-than-insignificant amount of credit deterioration since origination. This update requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of a company’s loan portfolio. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption in fiscal years beginning after December 15, 2018 is permitted. The amendment requires the use of the modified retrospective approach for adoption. The Company is in the process of evaluating the impact of the ASU’s adoption on the Company’s consolidated financial statements. The Company reviewed ASU 2016-01, Financial Instruments – Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825), ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payment s, ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment and ASU 2017-05, Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) and does not expect the adoption of these pronouncements to have a material impact on its financial statements.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 3 Investment Securities The Company’s investment securities portfolio is comprised of available-for-sale and held-to-maturity investment securities. These investment securities totaled $1.2 billion at June 30, 2017 and included $0.9 billion of available-for-sale securities and $0.3 billion of held-to-maturity securities. At December 31, 2016, investment securities totaled $1.2 billion and included $0.9 billion of available-for-sale securities and $0.3 billion of held-to-maturity securities. Available-for-sale At June 30, 2017 and December 31, 2016, the Company held $0.9 billion of available-for-sale investment securities. Available-for-sale securities are summarized as follows as of the dates indicated: June 30, 2017 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 192,369 $ 3,476 $ (504) $ 195,341 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 680,040 1,604 (13,013) 668,631 Municipal securities 2,323 — — 2,323 Other securities 419 — — 419 Total $ 875,151 $ 5,080 $ (13,517) $ 866,714 December 31, 2016 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 223,781 $ 3,909 $ (530) $ 227,160 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 666,616 2,124 (16,001) 652,739 Municipal securities 3,921 — (7) 3,914 Other securities 419 — — 419 Total $ 894,737 $ 6,033 $ (16,538) $ 884,232 At June 30, 2017 and December 31, 2016, mortgage-backed securities represented primarily all of the Company’s available-for-sale investment portfolio and all mortgage-backed securities were backed by government sponsored enterprises (“GSE”) collateral such as Federal Home Loan Mortgage Corporation (“FHLMC”) and Federal National Mortgage Association (“FNMA”), and the government sponsored agency Government National Mortgage Association (“GNMA”). The table below summarizes the available-for-sale securities with unrealized losses as of the dates shown, along with the length of the impairment period: June 30, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 79,548 $ (504) $ — $ — $ 79,548 $ (504) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 148,819 (2,279) 354,843 (10,734) 503,662 (13,013) Total $ 228,367 $ (2,783) $ 354,843 $ (10,734) $ 583,210 $ (13,517) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 100,898 $ (530) $ — $ — $ 100,898 $ (530) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 137,576 (2,976) 385,707 (13,025) 523,283 (16,001) Municipal securities 3,058 (7) — — 3,058 (7) Total $ 241,532 $ (3,513) $ 385,707 $ (13,025) $ 627,239 $ (16,538) The unrealized losses in the Company's investment portfolio at June 30, 2017 were caused by changes in interest rates. The portfolio included 63 securities, having an aggregate fair value of $583.2 million, which were in an unrealized loss position at June 30, 2017. During the six months ended June 30, 2017, the Company recorded $0.2 million of other-than-temporary impairment (OTTI) included in other non-interest expense on the consolidated statement of operations. The OTTI credit charge was on a single municipal security, with an aggregate fair value of $1.5 million. The unrealized losses in the Company's investment portfolio at December 31, 2016 were caused by changes in interest rates. The portfolio included 61 securities, having an aggregate fair value of $627.2 million, which were in an unrealized loss position at December 31, 2016. Management evaluated all of the available-for-sale securities in an unrealized position and concluded no OTTI existed at December 31, 2016. The Company has no intention to sell these securities before recovery of their amortized cost and believes it will not be required to sell the securities before the recovery of their amortized cost. Certain securities are pledged as collateral for public deposits, securities sold under agreements to repurchase, and to secure borrowing capacity at the Federal Reserve Bank and Federal Home Loan Bank (“FHLB”), if needed. The fair value of available-for-sale investment securities pledged as collateral totaled $296.4 million at June 30, 2017 and $373.7 million at December 31, 2016. Certain investment securities may also be pledged as collateral for the line of credit at the FHLB of Topeka; at June 30, 2017 and December 31, 2016, no securities were pledged for this purpose. Mortgage-backed securities do not have a single maturity date and actual maturities may differ from contractual maturities depending on the repayment characteristics and experience of the underlying financial instruments. The estimated weighted average life of the available-for-sale mortgage-backed securities portfolio was 3.1 years at June 30, 2017 and 3.4 years at December 31, 2016. This estimate is based on assumptions and actual results may differ. At June 30, 2017 and December 31, 2016, the duration of the total available-for-sale investment portfolio was 2.9 years and 3.2 years, respectively. As of June 30, 2017, municipal securities with an amortized cost and fair value of $1.5 million were due in one year, municipal securities with an amortized cost and fair value of $0.3 million were due after one year through five years, and municipal securities with an amortized cost and fair value of $0.6 million were due after five years through ten years. Other securities of $0.4 million as of June 30, 2017, have no stated contractual maturity date. Held-to-maturity At June 30, 2017 and December 31, 2016, the Company held $294.9 million and $332.5 million of held-to-maturity investment securities, respectively. Held-to-maturity investment securities are summarized as follows as of the dates indicated: June 30, 2017 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 233,026 $ 1,332 $ (164) $ 234,194 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 61,865 11 (1,201) 60,675 Total investment securities held-to-maturity $ 294,891 $ 1,343 $ (1,365) $ 294,869 December 31, 2016 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 263,411 $ 1,685 $ (234) $ 264,862 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 69,094 16 (1,399) 67,711 Total investment securities held-to-maturity $ 332,505 $ 1,701 $ (1,633) $ 332,573 The table below summarizes the held-to-maturity securities with unrealized losses as of the dates shown, along with the length of the impairment period: June 30, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 25,512 $ (164) $ — $ — $ 25,512 $ (164) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 23,861 (306) 29,244 (895) 53,105 (1,201) Total $ 49,373 $ (470) $ 29,244 $ (895) $ 78,617 $ (1,365) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 27,799 $ (234) $ — $ — $ 27,799 $ (234) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 26,992 (357) 32,146 (1,042) 59,138 (1,399) Total $ 54,791 $ (591) $ 32,146 $ (1,042) $ 86,937 $ (1,633) The held-to-maturity portfolio included 16 securities, having an aggregate fair value of $78.6 million, which were in an unrealized loss position at June 30, 2017, compared to 15 securities, with a fair value of $86.9 million, at December 31, 2016. Management evaluated all of the held-to-maturity securities in an unrealized loss position and concluded that no OTTI existed at June 30, 2017 or December 31, 2016. The unrealized losses in the Company's investments issued or guaranteed by U.S. government agencies or sponsored enterprises at June 30, 2017 were caused by changes in interest rates. The Company has no intention to sell these securities before recovery of their amortized cost and believes it will not be required to sell the securities before the recovery of their amortized cost. The carrying value of held-to-maturity investment securities pledged as collateral totaled $139.8 million and $119.2 million at June 30, 2017 and December 31, 2016, respectively. Actual maturities of mortgage-backed securities may differ from scheduled maturities depending on the repayment characteristics and experience of the underlying financial instruments. The estimated weighted average expected life of the held-to-maturity mortgage-backed securities portfolio as of June 30, 2017 and December 31, 2016 was 3.1 years and 3.5 years, respectively. This estimate is based on assumptions and actual results may differ. The duration of the total held-to-maturity investment portfolio was 2.9 years and 3.2 years as of June 30, 2017 and December 31, 2016, respectively.

Loans

Loans	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Loans	Note 4 Loans The loan portfolio is comprised of loans originated by the Company and loans that were acquired in connection with the Company’s acquisitions. The table below shows the loan portfolio composition including carrying value by segment of loans accounted for under ASC Topic 310-30, Receivables—Loans and Debt Securities Acquired with Deteriorated Credit Quality, and loans not accounted for under this guidance, which includes the Company’s originated loans. The carrying value of loans is net of discounts on loans excluded from ASC 310-30, and fees and costs of $4.9 million and $6.3 million as of June 30, 2017 and December 31, 2016, respectively. At December 31, 2016, $14.4 million of non 310-30 loans were held-for-sale, most of which were in the residential real estate segment. The sale of these loans was completed in connection with the four banking center divestitures in the second quarter of 2017. June 30, 2017 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 35,978 $ 1,739,476 $ 1,775,454 Commercial real estate non-owner occupied 83,785 473,235 557,020 Residential real estate 14,012 714,499 728,511 Consumer 652 26,308 26,960 Total $ 134,427 $ 2,953,518 $ 3,087,945 December 31, 2016 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 39,280 $ 1,521,150 $ 1,560,430 Commercial real estate non-owner occupied 89,150 437,642 526,792 Residential real estate 16,524 728,361 744,885 Consumer 898 27,916 28,814 Total $ 145,852 $ 2,715,069 $ 2,860,921 Delinquency for loans excluded from ASC 310-30 is shown in the following tables at June 30, 2017 and December 31, 2016, respectively: June 30, 2017 Greater Total Loans > 90 30-59 60-89 than 90 non days past days past days past days past Total past 310-30 due and Non- due due due due Current loans still accruing accrual Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 658 $ 228 $ 4,135 $ 5,021 $ 1,270,834 $ 1,275,855 $ — $ 7,780 Owner occupied commercial real estate 890 — 52 942 232,988 233,930 — 4,377 Agriculture 512 — 435 947 130,451 131,398 — 2,208 Energy — — 6,613 6,613 91,680 98,293 — 12,050 Total commercial 2,060 228 11,235 13,523 1,725,953 1,739,476 — 26,415 Commercial real estate non-owner occupied: Construction — — 215 215 121,441 121,656 215 — Acquisition/development 334 — — 334 16,008 16,342 — — Multifamily — — — — 41,430 41,430 — — Non-owner occupied 135 — — 135 293,672 293,807 — 35 Total commercial real estate 469 — 215 684 472,551 473,235 215 35 Residential real estate: Senior lien 854 1,667 1,298 3,819 658,403 662,222 — 5,286 Junior lien 185 47 8 240 52,037 52,277 — 557 Total residential real estate 1,039 1,714 1,306 4,059 710,440 714,499 — 5,843 Consumer 69 19 6 94 26,214 26,308 — 162 Total loans excluded from ASC 310-30 $ 3,637 $ 1,961 $ 12,762 $ 18,360 $ 2,935,158 $ 2,953,518 $ 215 $ 32,455 December 31, 2016 Greater Total Loans > 90 30-59 60-89 than 90 non days past days past days past days past Total past 310-30 due and Non- due due due due Current loans still accruing accrual Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 3,134 $ 4,009 $ 1,078 $ 8,221 $ 1,066,475 $ 1,074,696 $ — $ 8,688 Owner occupied commercial real estate 583 216 56 855 220,689 221,544 — 2,056 Agriculture 501 — — 501 134,136 134,637 — 1,905 Energy 2 — 6,548 6,550 83,723 90,273 — 12,645 Total commercial 4,220 4,225 7,682 16,127 1,505,023 1,521,150 — 25,294 Commercial real estate non-owner occupied: Construction — — — — 90,314 90,314 — — Acquisition/development — — — — 13,306 13,306 — — Multifamily — — — — 24,954 24,954 — — Non-owner occupied — — 28 28 309,040 309,068 — 66 Total commercial real estate — — 28 28 437,614 437,642 — 66 Residential real estate: Senior lien 888 645 1,458 2,991 672,699 675,690 — 4,522 Junior lien 115 61 22 198 52,473 52,671 — 654 Total residential real estate 1,003 706 1,480 3,189 725,172 728,361 — 5,176 Consumer 83 8 — 91 27,825 27,916 — 181 Total loans excluded from ASC 310-30 $ 5,306 $ 4,939 $ 9,190 $ 19,435 $ 2,695,634 $ 2,715,069 $ — $ 30,717 Loans are considered past due or delinquent when the contractual principal or interest due in accordance with the terms of the loan agreement remains unpaid after the due date of the scheduled payment. Pooled loans accounted for under ASC 310-30 that are 90 days or more past due and still accreting are generally considered to be performing and are included in loans 90 days or more past due and still accruing. Non-accrual loans include troubled debt restructurings on non-accrual status. Non-accrual loans excluded from the scope of ASC 310-30 totaled $32.5 million at June 30, 2017, increasing $1.7 million, or 5.7% from December 31, 2016. The increase was driven primarily by one loan relationship totaling $2.2 million in the owner occupied commercial real estate sector placed on non-accrual during the second quarter of 2017, offset by other net decreases of $0.5 million. Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows as of June 30, 2017 and December 31, 2016, respectively: June 30, 2017 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,243,638 $ 13,978 $ 15,472 $ 2,767 $ 1,275,855 Owner occupied commercial real estate 222,882 4,607 6,196 245 233,930 Agriculture 106,022 22,668 2,674 34 131,398 Energy 86,243 — 5,998 6,052 98,293 Total commercial 1,658,785 41,253 30,340 9,098 1,739,476 Commercial real estate non-owner occupied: Construction 121,441 — 215 — 121,656 Acquisition/development 13,844 2,498 — — 16,342 Multifamily 39,255 — 2,175 — 41,430 Non-owner occupied 291,007 1,566 1,234 — 293,807 Total commercial real estate 465,547 4,064 3,624 — 473,235 Residential real estate: Senior lien 656,249 251 5,709 13 662,222 Junior lien 51,404 — 873 — 52,277 Total residential real estate 707,653 251 6,582 13 714,499 Consumer 26,086 56 166 — 26,308 Total loans excluded from ASC 310-30 $ 2,858,071 $ 45,624 $ 40,712 $ 9,111 $ 2,953,518 Loans accounted for under ASC 310-30: Commercial $ 27,799 $ 1,105 $ 7,074 $ — $ 35,978 Commercial real estate non-owner occupied 54,207 1,701 27,877 — 83,785 Residential real estate 11,234 1,088 1,690 — 14,012 Consumer 464 12 176 — 652 Total loans accounted for under ASC 310-30 $ 93,704 $ 3,906 $ 36,817 $ — $ 134,427 Total loans $ 2,951,775 $ 49,530 $ 77,529 $ 9,111 $ 3,087,945 December 31, 2016 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,041,326 $ 7,243 $ 25,636 $ 491 $ 1,074,696 Owner occupied commercial real estate 202,036 9,371 10,137 — 221,544 Agriculture 123,809 8,922 1,906 — 134,637 Energy 77,619 — 7,811 4,843 90,273 Total commercial 1,444,790 25,536 45,490 5,334 1,521,150 Commercial real estate non-owner occupied: Construction 90,099 — 215 — 90,314 Acquisition/development 10,758 2,548 — — 13,306 Multifamily 22,495 238 2,221 — 24,954 Non-owner occupied 300,922 5,895 2,251 — 309,068 Total commercial real estate 424,274 8,681 4,687 — 437,642 Residential real estate: Senior lien 669,148 1,215 5,316 11 675,690 Junior lien 51,250 178 1,243 — 52,671 Total residential real estate 720,398 1,393 6,559 11 728,361 Consumer 27,669 59 188 — 27,916 Total loans excluded from ASC 310-30 $ 2,617,131 $ 35,669 $ 56,924 $ 5,345 $ 2,715,069 Loans accounted for under ASC 310-30: Commercial $ 27,436 $ 610 $ 11,234 $ — $ 39,280 Commercial real estate non-owner occupied 38,895 967 45,520 3,768 89,150 Residential real estate 12,477 1,327 2,720 — 16,524 Consumer 721 17 160 — 898 Total loans accounted for under ASC 310-30 $ 79,529 $ 2,921 $ 59,634 $ 3,768 $ 145,852 Total loans $ 2,696,660 $ 38,590 $ 116,558 $ 9,113 $ 2,860,921 Non 310-30 substandard loans within the commercial and industrial sector decreased from December 31, 2016, primarily due to two loan relationship upgrades totaling $6.2 million from substandard to special mention and one loan relationship downgrade totaling $2.1 million from substandard to doubtful during the six months ended June 30, 2017. Non 310-30 substandard loans within the owner occupied commercial real estate sector decreased from December 31, 2016, primarily due to two loan relationship upgrades totaling $5.5 million from substandard to special mention, partially offset by one loan relationship placed on non-accrual and included in substandard during the second quarter of 2017 totaling $1.4 million. Non 310-30 doubtful loans within the energy sector increased from December 31, 2016, due to increased specific reserves on one relationship previously placed on non-accrual. Impaired Loans Loans are considered to be impaired when it is probable that the Company will not be able to collect all amounts due in accordance with the contractual terms of the loan agreement. Impaired loans are comprised of loans excluded from ASC 310-30 on non-accrual status, loans in bankruptcy, and troubled debt restructurings (“TDRs”) described below. If a specific allowance is warranted based on the borrower’s overall financial condition, the specific allowance is calculated based on discounted cash flows using the loan’s initial contractual effective interest rate or the fair value of the collateral less selling costs for collateral dependent loans. At June 30, 2017, the Company measured $29.0 million of impaired loans based on the fair value of the collateral less selling costs and $2.5 million of impaired loans using discounted cash flows and the loan’s initial contractual effective interest rate. Impaired loans totaling $7.9 million that individually were less than $250 thousand each, were measured through the general ALL reserves due to their relatively small size. At June 30, 2017 and December 31, 2016, the Company’s recorded investments in impaired loans were $39.4 million and $38.3 million, respectively. Impaired loans at June 30, 2017 were primarily comprised of eight relationships totaling $24.6 million. Three of the relationships were in the energy sector, three of the relationships were in the commercial and industrial sector, one relationship was in the owner-occupied commercial real estate sector and one relationship was in the agricultural sector. Impaired loans had a collective related allowance for loan losses allocated to them of $6.2 million and $2.4 million at June 30, 2017 and December 31, 2016, respectively. Additional information regarding impaired loans at June 30, 2017 and December 31, 2016 is set forth in the table below: June 30, 2017 December 31, 2016 Allowance Allowance Unpaid for loan Unpaid for loan principal Recorded losses principal Recorded losses balance investment allocated balance investment allocated With no related allowance recorded: Commercial: Commercial and industrial $ 6,712 $ 5,387 $ — $ 8,671 $ 7,495 $ — Owner occupied commercial real estate 3,954 3,755 — 3,350 3,197 — Agriculture 1,581 1,377 — 2,044 1,987 — Energy 16,548 5,437 — 17,142 6,105 — Total commercial 28,795 15,956 — 31,207 18,784 — Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily 31 31 — 33 33 — Non-owner occupied 357 306 — 394 343 — Total commercial real estate 388 337 — 427 376 — Residential real estate: Senior lien 345 328 — 1,551 1,426 — Junior lien — — — 54 51 — Total residential real estate 345 328 — 1,605 1,477 — Consumer — — — 4 4 — Total impaired loans with no related allowance recorded $ 29,528 $ 16,621 $ — $ 33,243 $ 20,641 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 4,681 $ 4,642 $ 2,767 $ 3,495 $ 3,464 $ 492 Owner occupied commercial real estate 2,585 2,336 248 957 642 2 Agriculture 938 911 35 — — — Energy 6,613 6,613 3,148 11,216 6,548 1,866 Total commercial 14,817 14,502 6,198 15,668 10,654 2,360 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 220 214 1 261 255 1 Total commercial real estate 220 214 1 261 255 1 Residential real estate: Senior lien 7,162 6,486 36 5,646 5,016 31 Junior lien 1,634 1,391 10 1,781 1,532 14 Total residential real estate 8,796 7,877 46 7,427 6,548 45 Consumer 170 165 1 188 184 2 Total impaired loans with a related allowance recorded $ 24,003 $ 22,758 $ 6,246 $ 23,544 $ 17,641 $ 2,408 Total impaired loans $ 53,531 $ 39,379 $ 6,246 $ 56,787 $ 38,282 $ 2,408 The table below shows additional information regarding the average recorded investment and interest income recognized on impaired loans for the periods presented: For the three months ended June 30, 2017 June 30, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 6,645 $ 25 $ 4,279 $ 70 Owner occupied commercial real estate 3,789 23 1,825 20 Agriculture 1,454 — 1,758 — Energy 5,680 — — — Total commercial 17,568 48 7,862 90 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 312 5 — — Total commercial real estate 312 5 — — Residential real estate: Senior lien 330 — 1,296 8 Junior lien — — 134 — Total residential real estate 330 — 1,430 8 Consumer — — — — Total impaired loans with no related allowance recorded $ 18,210 $ 53 $ 9,292 $ 98 With a related allowance recorded: Commercial: Commercial and industrial $ 4,643 $ — $ 4,144 $ — Owner occupied commercial real estate 2,340 7 842 4 Agriculture 912 1 178 1 Energy 6,624 — 25,975 — Total commercial 14,519 8 31,139 5 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 31 — 35 — Non-owner occupied 216 2 814 10 Total commercial real estate 247 2 849 10 Residential real estate: Senior lien 6,525 20 5,149 28 Junior lien 1,403 12 1,652 14 Total residential real estate 7,928 32 6,801 42 Consumer 169 — 241 — Total impaired loans with a related allowance recorded $ 22,863 $ 42 $ 39,030 $ 57 Total impaired loans $ 41,073 $ 95 $ 48,322 $ 155 For the six months ended June 30, 2017 June 30, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 7,030 $ 73 $ 4,564 $ 138 Owner occupied commercial real estate 3,834 41 1,869 49 Agriculture 1,531 — 1,758 — Energy 5,889 — — — Total Commercial 18,284 114 8,191 187 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 320 12 — — Total commercial real estate 320 12 — — Residential real estate: Senior lien 334 — 1,312 14 Junior lien — — 136 1 Total residential real estate 334 — 1,448 15 Consumer — — — — Total impaired loans with no related allowance recorded $ 18,938 $ 126 $ 9,639 $ 202 With a related allowance recorded: Commercial: Commercial and industrial $ 4,630 $ — $ 4,312 $ — Owner occupied commercial real estate 2,349 11 865 7 Agriculture 914 3 179 3 Energy 6,602 — 26,005 — Total Commercial 14,495 14 31,361 10 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 31 1 36 1 Non-owner occupied 220 5 823 24 Total commercial real estate 251 6 859 25 Residential real estate: Senior lien 6,583 40 5,212 53 Junior lien 1,421 25 1,670 27 Total residential real estate 8,004 65 6,882 80 Consumer 175 — 242 — Total impaired loans with a related allowance recorded $ 22,925 $ 85 $ 39,344 $ 115 Total impaired loans $ 41,863 $ 211 $ 48,983 $ 317 Interest income recognized on impaired loans noted in the table above primarily represents interest earned on accruing troubled debt restructurings. Interest income recognized on impaired loans during the three months ended June 30, 2017 and 2016 was $0.1 million and $0.2 million, respectively. Interest income recognized on impaired loans during the six months ended June 30, 2017 and 2016 was $0.2 million and $0.3 million, respectively. Troubled debt restructurings It is the Company’s policy to review each prospective credit in order to determine the appropriateness and the adequacy of security or collateral prior to making a loan. In the event of borrower default, the Company seeks recovery in compliance with lending laws, the respective loan agreements, and credit monitoring and remediation procedures that may include restructuring a loan to provide a concession by the Company to the borrower from their original terms due to borrower financial difficulties in order to facilitate repayment. Additionally, if a borrower’s repayment obligation has been discharged by a court, and that debt has not been reaffirmed by the borrower, regardless of past due status, the loan is considered to be a TDR. At June 30, 2017 and December 31, 2016, the Company had $5.2 million and $5.8 million, respectively, of accruing TDRs that had been restructured from the original terms in order to facilitate repayment. Non-accruing TDRs at June 30, 2017 and December 31, 2016 totaled $21.7 million and $16.7 million, respectively. During the six months ended June 30, 2017, the Company restructured five loans with a recorded investment of $6.8 million at June 30, 2017. Substantially all of the loan modifications were a reduction of the principal payment, a reduction in interest rate, or an extension of term. Loan modifications to loans accounted for under ASC 310-30 are not considered TDRs. The table below provides additional information related to accruing TDRs at June 30, 2017 and December 31, 2016: June 30, 2017 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,258 $ 3,270 $ 3,488 $ 100 Commercial real estate non-owner occupied 491 510 543 — Residential real estate 1,424 1,450 1,435 2 Consumer 4 5 4 — Total $ 5,177 $ 5,235 $ 5,470 $ 102 December 31, 2016 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,302 $ 3,440 $ 3,464 $ 100 Commercial real estate non-owner occupied 538 572 590 — Residential real estate 1,920 1,996 1,969 2 Consumer 7 9 7 — Total $ 5,767 $ 6,017 $ 6,030 $ 102 The following table summarizes the Company’s carrying value of non-accrual TDRs as of June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Commercial $ 20,246 $ 15,265 Commercial real estate non-owner occupied — — Residential real estate 1,308 1,301 Consumer 127 142 Total non-accruing TDRs $ 21,681 $ 16,708 Accrual of interest is resumed on loans that were on non-accrual only after the loan has performed sufficiently. The Company had three TDRs that were modified within the past twelve months and had defaulted on their restructured terms during the three months ended June 30, 2017, and five TDRs that were modified within the past twelve months and had defaulted on their restructured terms during the six months ended June 30, 2017. The defaulted TDRs consisted of one energy sector loan totaling $2.9 million, three commercial and industrial loans totaling $4.2 million and one small senior lien loan. The allowance for loan losses related to troubled debt restructurings on non-accrual status is determined by individual evaluation, including collateral adequacy, using the same process as loans on non-accrual status which are not classified as troubled debt restructurings. During the three and six months ended June 30, 2016, the Company had one and five TDRs that had been modified within the past 12 months that defaulted on their restructured terms, respectively. For purposes of this disclosure, the Company considers “default” to mean 90 days or more past due on principal or interest. Loans accounted for under ASC 310-30 Loan pools accounted for under ASC Topic 310-30 are periodically re-measured to determine expected future cash flows. In determining the expected cash flows, the timing of cash flows and prepayment assumptions for smaller homogeneous loans are based on statistical models that take into account factors such as the loan interest rate, credit profile of the borrowers, the years in which the loans were originated, and whether the loans are fixed or variable rate loans. Prepayments may be assumed on loans if circumstances specific to that loan warrant a prepayment assumption. The re-measurement of loans accounted for under ASC 310-30 resulted in the following changes in the carrying amount of accretable yield during the six months ended June 30, 2017 and 2016: June 30, 2017 June 30, 2016 Accretable yield beginning balance $ 60,476 $ 84,194 Reclassification from non-accretable difference 7,732 5,646 Reclassification to non-accretable difference (494) (4,019) Accretion (12,051) (18,056) Accretable yield ending balance $ 55,663 $ 67,765 Below is the composition of the net book value for loans accounted for under ASC 310-30 at June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Contractual cash flows $ 514,149 $ 537,611 Non-accretable difference (324,059) (331,283) Accretable yield (55,663) (60,476) Loans accounted for under ASC 310-30 $ 134,427 $ 145,852

Allowance for Loan Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Allowance for Loan Losses	Note 5 Allowance for Loan Losses The tables below detail the Company’s allowance for loan losses (“ALL”) and recorded investment in loans as of and for the three and six months ended June 30, 2017 and 2016: Three months ended June 30, 2017 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Non 310-30 beginning balance 20,539 5,599 4,216 276 30,630 Charge-offs — — (2) (119) (121) Recoveries 30 10 110 55 205 Provision 4,087 191 (257) 82 4,103 Non 310-30 ending balance 24,656 5,800 4,067 294 34,817 ASC 310-30 beginning balance — 216 — 4 220 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision — (82) — 4 (78) ASC 310-30 ending balance — 134 — 8 142 Ending balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Three months ended June 30, 2016 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Non 310-30 beginning balance 28,610 3,803 4,289 249 36,951 Charge-offs (3,375) — (140) (171) (3,686) Recoveries 12 56 16 126 210 Provision 4,733 1,298 339 30 6,400 Non 310-30 ending balance 29,980 5,157 4,504 234 39,875 ASC 310-30 beginning balance 74 58 36 47 215 Charge-offs — (41) — — (41) Recoveries — — — — — (Recoupment) provision (72) 194 (36) (29) 57 ASC 310-30 ending balance 2 211 — 18 231 Ending balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Six months ended June 30, 2017 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 18,821 $ 5,642 $ 4,387 $ 324 $ 29,174 Non 310-30 beginning balance 18,821 5,422 4,387 319 28,949 Charge-offs (20) — (10) (301) (331) Recoveries 41 20 113 122 296 Provision 5,814 358 (423) 154 5,903 Non 310-30 ending balance 24,656 5,800 4,067 294 34,817 ASC 310-30 beginning balance — 220 — 5 225 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision — (86) — 3 (83) ASC 310-30 ending balance — 134 — 8 142 Ending balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 6,197 $ 1 $ 45 $ 1 $ 6,244 Non 310-30 loans collectively evaluated for impairment 18,459 5,799 4,022 293 28,573 ASC 310-30 loans — 134 — 8 142 Total ending allowance balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Loans: Non 310-30 individually evaluated for impairment $ 30,458 $ 551 $ 8,205 $ 165 $ 39,379 Non 310-30 collectively evaluated for impairment 1,709,018 472,684 706,294 26,143 2,914,139 ASC 310-30 loans 35,978 83,785 14,012 652 134,427 Total loans $ 1,775,454 $ 557,020 $ 728,511 $ 26,960 $ 3,087,945 Six months ended June 30, 2016 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 17,261 $ 4,166 $ 5,281 $ 411 $ 27,119 Non 310-30 beginning balance 16,473 3,939 5,245 385 26,042 Charge-offs (3,484) (276) (197) (388) (4,345) Recoveries 24 65 23 185 297 Provision 16,967 1,429 (567) 52 17,881 Non 310-30 ending balance 29,980 5,157 4,504 234 39,875 ASC 310-30 beginning balance 788 227 36 26 1,077 Charge-offs — (41) — — (41) Recoveries — — — — — (Recoupment) provision (786) 25 (36) (8) (805) ASC 310-30 ending balance 2 211 — 18 231 Ending balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 14,933 $ 3 $ 39 $ 2 $ 14,977 Non 310-30 loans collectively evaluated for impairment 15,047 5,154 4,465 232 24,898 ASC 310-30 loans 2 211 — 18 231 Total ending allowance balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Loans: Non 310-30 individually evaluated for impairment $ 37,265 $ 842 $ 7,369 $ 240 $ 45,716 Non 310-30 collectively evaluated for impairment 1,406,609 423,178 667,461 26,258 2,523,506 ASC 310-30 loans 46,875 101,719 19,341 1,347 169,282 Total loans $ 1,490,749 $ 525,739 $ 694,171 $ 27,845 $ 2,738,504 In evaluating the loan portfolio for an appropriate ALL level, non-impaired loans that were not accounted for under ASC 310-30 were grouped into segments based on broad characteristics such as primary use and underlying collateral. Within the segments, the portfolio was further disaggregated into classes of loans with similar attributes and risk characteristics for purposes of applying loss ratios and determining applicable subjective adjustments to the ALL. The application of subjective adjustments was based upon qualitative risk factors, including economic trends and conditions, industry conditions, asset quality, loss trends, lending management, portfolio growth and loan review/internal audit results. Net charge-offs on non 310-30 loans during the three and six months ended June 30, 2017 were $0.1 million and $0.0 million, respectively. Management's evaluation of credit quality resulted in a provision for loan losses on the non 310-30 loans of $4.1 million and $5.9 million during the three and six months ended June 30, 2017, respectively. Provision for the three months ended June 30, 2017 included specific reserves of $2.1 million on one commercial loan and general reserves on net loan growth. Provision for the six months ended June 30, 2017 included specific reserves totaling $3.4 million on one energy sector and one commercial sector loan. During the six months ended June 30, 2017, the Company re-estimated the expected cash flows of the loan pools accounted for under ASC 310-30. The re-measurement resulted in a net recoupment of $78 thousand and $83 thousand for the three and six months ended June 30, 2017, respectively. The net recoupment was primarily due to a recoupment of $82 thousand in the non-owner occupied commercial real estate segment during the three months ended June 30, 2017, and primarily due to a recoupment of $86 thousand in the non-owner occupied commercial real estate segment for the six months ended June 30, 2017. Net charge-offs on non 310-30 loans during the three and six months ended June 30, 2016 were $3.5 million and $4.0 million, respectively. Management’s evaluation resulted in a provision for loan losses on the non 310-30 loans of $6.4 million and $17.9 million during the three and six months ended June 30, 2016, respectively. The increase in provision was driven by a $4.3 million increase in reserves against the energy sector portfolio for the three months ended June 30, 2016 and a net $15.1 million increase for the six months ended June 30, 2016. During the six months ended June 30, 2016, the Company re-estimated the expected cash flows of the loan pools accounted for under ASC 310-30. The re-measurement resulted in a net provision of $57 thousand and a net recoupment of $805 thousand for the three and six months ended June 30, 2016, respectively, which was comprised primarily of a provision of $195 thousand in the non-owner occupied commercial real estate segment, partially offset by recoupments of $73 thousand and $3 thousand in the commercial real estate and residential real estate segments, respectively, for the three months ended June 30, 2016, and primarily a recoupment of $786 thousand in the commercial segment for the six months ended June 30, 2016.

Other Real Estate Owned

Other Real Estate Owned	6 Months Ended
	Jun. 30, 2017
FDIC Loss-Sharing Related
Other Real Estate Owned	Note 6 Other Real Estate Owned The table below details the OREO activity during the six months ended June 30, 2017 and 2016: For the six months ended June 30, 2017 2016 Beginning balance $ 15,662 $ 20,814 Transfers from loan portfolio, at fair value 639 3,654 Impairments (46) (104) Sales, net (1,958) (1,122) Ending balance $ 14,297 $ 23,242 The Company did not have any minority interest in participated other real estate owned at June 30, 2017. At December 31, 2016, OREO balances excluded $1.6 million of the Company’s minority interests in OREO, which are held by outside banks where the Company was not the lead bank and does not have a controlling interest. The Company maintains a receivable in other assets for these minority interests. Included in Sales, net are net gains of $1.8 million and $2.0 million for the six months ended June 30, 2017 and 2016, respectively.

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2017
Disclosure of Repurchase Agreements [Abstract]
Borrowings	Note 7 Borrowings As of June 30, 2017 and December 31, 2016, the Company sold securities under agreements to repurchase totaling $119.2 million and $92.0 million, respectively, and none were for periods longer than one day. The Company pledged mortgage-backed securities with a fair value of approximately $123.4 million and $99.1 million as of June 30, 2017 and December 31, 2016, respectively, for these agreements. The Company monitors collateral levels on a continuous basis and may be required to provide additional collateral based on the fair value of the underlying securities. As of June 30, 2017 and December 31, 2016, the Company had $4.2 million and $7.0 million of excess collateral pledged for repurchase agreements. The repurchase agreements are subject to a master netting arrangement; however, the Company has not offset any of the amounts presented in the consolidated financial statements. As a member of the FHLB, the Bank has access to a line of credit and term financing from the FHLB with total available credit of $763.6 million at June 30, 2017. At June 30, 2017 and December 31, 2016, the Bank had $129.1 million and $25.0 million in term advances from the FHLB, respectively. The term advances have fixed interest rates of 1.31% - 2.33%, with maturity dates of 2018 - 2020. The Bank had investment securities pledged as collateral for FHLB advances in the amount of $26.1 million at June 30, 2017 and $28.8 million at December 31, 2016. Interest expense related to FHLB advances totaled $496 thousand and $693 thousand for the three and six months ended June 30, 2017, respectively, and $166 thousand and $332 thousand for the three and six months ended June 30, 2016, respectively.

Regulatory Capital

Regulatory Capital	6 Months Ended
	Jun. 30, 2017
FDIC Loss-Sharing Related
Regulatory Capital	Note 8 Regulatory Capital As a bank holding company, the Company is subject to regulatory capital adequacy requirements implemented by the Federal Reserve. The federal banking agencies have risk-based capital adequacy regulations intended to provide a measure of capital adequacy that reflects the degree of risk associated with a banking organization’s operations. Under these regulations, assets are assigned to one of several risk categories, and nominal dollar amounts of assets and credit equivalent amounts of off-balance-sheet items are multiplied by a risk adjustment percentage for the category. The new Basel III rules, effective January 1, 2015, changed the components of regulatory capital and changed the way in which risk ratings are assigned to various categories of bank assets. Also, a new Tier I common risk-based ratio was defined. Under the Basel III requirements, at June 30, 2017, the Company and the Bank met all capital requirements and the Bank had regulatory capital ratios in excess of the levels established for well-capitalized institutions. At June 30, 2017 and December 31, 2016, the Bank met the requirements to be considered “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized”, the Bank must maintain capital ratios as set forth in the table below. The following table sets forth the capital ratios of the Company and the Bank at June 30, 2017 and December 31, 2016. June 30, 2017 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated $ 472,627 N/A N/A $ 184,402 NBH Bank 385,466 $ 206,721 183,752 Common equity tier 1 risk-based capital: Consolidated $ 472,627 N/A N/A $ 207,452 NBH Bank 385,466 $ 298,597 206,721 Tier 1 risk-based capital ratio: Consolidated $ 472,627 N/A N/A $ 213,366 NBH Bank 385,466 $ 283,313 212,485 Total risk-based capital ratio: Consolidated $ 507,912 N/A N/A $ 284,488 NBH Bank 420,750 $ 354,141 283,313 December 31, 2016 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated $ 470,259 N/A N/A $ 181,019 NBH Bank 389,189 $ 202,903 180,358 Common equity tier 1 risk-based capital: Consolidated $ 470,259 N/A N/A $ 203,647 NBH Bank 389,189 $ 293,082 202,903 Tier 1 risk-based capital ratio: Consolidated $ 470,259 N/A N/A $ 199,467 NBH Bank 389,189 $ 264,596 198,447 Total risk-based capital ratio: Consolidated $ 499,759 N/A N/A $ 265,955 NBH Bank 418,689 $ 330,745 264,596

Stock-based Compensation and Be

Stock-based Compensation and Benefits	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation and Benefits	Note 9 Stock-based Compensation and Benefits The Company provides stock-based compensation in accordance with shareholder-approved plans. During the second quarter of 2014, shareholders approved the 2014 Omnibus Incentive Plan (the "2014 Plan"). The 2014 Plan replaces the NBH Holdings Corp. 2009 Equity Incentive Plan (the "Prior Plan"), pursuant to which the Company granted equity awards prior to the approval of the 2014 Plan. Pursuant to the 2014 Plan, the Compensation Committee of the Board of Directors has the authority to grant, from time to time, awards of stock options, stock appreciation rights, restricted stock, restricted stock units, performance units, other stock-based awards, or any combination thereof to eligible persons. Stock options The Company issued stock options during the six months ended June 30, 2017 and 2016, which are primarily time-vesting with 1/3 vesting on each of the first, second and third anniversary of the date of grant or date of hire. The expense associated with the awarded stock options was measured at fair value using a Black-Scholes option-pricing model. The outstanding unvested option awards vest on a graded basis over 1-3 years of continuous service and have 7-10 year contractual terms. The Company issued stock options in accordance with the 2014 Plan during 2017. The following table summarizes stock option activity for the six months ended June 30, 2017: Weighted average Weighted remaining average contractual Aggregate exercise term in intrinsic Options price years value Outstanding at December 31, 2016 2,185,922 $ 19.81 4.85 $ 7,753 Granted 99,920 33.98 Exercised (585,750) 19.93 Forfeited (16,225) 21.84 Outstanding at June 30, 2017 1,683,867 $ 20.61 4.52 $ 21,136 Options exercisable at June 30, 2017 1,429,584 $ 19.80 3.77 $ 19,021 Options expected to vest 1,662,690 $ 20.53 4.46 $ 20,994 Stock option expense is a component of salaries and benefits in the consolidated statements of operations and totaled $0.2 million for the three months ended June 30, 2017 and 2016, and $0.4 million for the six months ended June 30, 2017 and 2016, respectively. At June 30, 2017, there was $0.8 million of total unrecognized compensation cost related to non-vested stock options granted under the plans. The cost is expected to be recognized over a weighted average period of 2.4 years. Restricted stock awards The Company issued time based restricted stock awards during the six months ended June 30, 2017 and 2016. The restricted stock awards vest over a range of a 1 - 3 year period. Restricted stock with time-based vesting was valued at the fair value of the shares on the date of grant as they are assumed to be held beyond the vesting period. No market-based stock awards were granted during the six months ended June 30, 2017. During six months ended June 30, 2016, the Company granted market-based awards of 26,594 shares in accordance with the 2014 Plan. These shares have a five-year performance period. The restricted stock shares vest upon the later of the Company’s stock price achieving an established price goal during the performance period, and the third anniversary of the date of grant. The fair value of these awards was determined using a Monte Carlo Simulation at grant date. The grant date fair value of these awards was $11.28. As of June 30, 2017, the market-based performance condition had been met for these awards and the total unrecognized compensation cost related to non-vested awards totaled $0.3 million, and is expected to be recognized over a weighted average period of approximately 1.9 years. Performance stock units During the six months ended June 30, 2017 and 2016, the Company granted 49,758 and 91,342 performance stock units in accordance with the 2014 Plan, respectively. These performance stock units granted represent initial target awards and do not reflect potential increases or decreases resulting from the final performance results, which are to be determined at the end of the three-year performance period (vesting date). The actual number of shares to be awarded at the end of the performance period will range from 0% - 150% of the initial target awards. 60% of the award is based on the Company’s cumulative earnings per share (EPS target) during the performance period, and 40% of the award is based on the Company’s cumulative total shareholder return (TSR target), or TSR, during the performance period. On the vesting date, the Company’s TSR will be compared to the respective TSRs of the companies comprising the KBW Regional Index at the grant date to determine the shares awarded. The fair value of the EPS target portion of the award was determined based on the closing stock price of the Company’s common stock on the grant date. The fair value of the TSR target portion of the award was determined using a Monte Carlo Simulation at the grant date. The weighted-average grant date fair value per unit for awards granted during the six months ended June 30, 2017 of the EPS target portion and the TSR target portion was $34.04 and $32.06, respectively. The following table summarizes restricted stock and performance stock activity during the six months ended June 30, 2017: Weighted Weighted Restricted average grant- Performance average grant- shares date fair value stock units date fair value Unvested at December 31, 2016 499,271 $ 15.82 85,295 $ 18.22 Granted 65,990 33.43 49,758 33.22 Vested (298,086) 15.27 — — Forfeited (11,111) 22.23 (5,994) 20.90 Unvested at June 30, 2017 256,064 $ 20.82 129,059 $ 23.88 As of June 30, 2017, the total unrecognized compensation cost related to non-vested restricted stock awards and units totaled $4.5 million, and is expected to be recognized over a weighted average period of approximately 2.1 years. Expense related to non-vested restricted awards and units totaled $0.8 million and $0.7 million during the three months ended June 30, 2017 and 2016, respectively, and $1.4 million during the six months ended June 30, 2017 and 2016, and is a component of salaries and benefits in the Company’s consolidated statements of operations. Employee Stock Purchase Plan The 2014 Employee Stock Purchase Plan (“ESPP”) is intended to be a qualified plan within the meaning of Section 423 of the Internal Revenue Code of 1986 and allows eligible employees to purchase shares of common stock through payroll deductions up to a limit of $25,000 per calendar year and 2,000 shares per offering period. The price an employee pays for shares is 90.0% of the fair market value of Company common stock on the last day of the offering period. The offering period is the six-month period commencing on March 1 and September 1 of each year and ending on August 31 and February 28 (or February 29 in the case of a leap year) of each year. There is no vesting or other restrictions on the stock purchased by employees under the ESPP. Under the ESPP, the total number of shares of common stock reserved for issuance totaled 400,000 shares, of which 360,963 were available for issuance. Under the ESPP, employees purchased 5,373 shares during the six months ended June 30, 2017.

Warrants

Warrants	6 Months Ended
	Jun. 30, 2017
Warrants and Rights Note Disclosure [Abstract]
Warrants	Note 10 Warrants During the first quarter of 2017, 250,750 warrants were exercised in a non-cash transaction, representing the remaining outstanding warrants. The warrants were granted to certain lead shareholders of the Company at the time of the Company’s initial capital raise (2009-2010), all with an exercise price of $20.00 per share. Refer to the consolidated statements of changes in shareholders’ equity for additional detail.

Common Stock

Common Stock	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Common Stock	Note 11 Common Stock The Company had 26,788,833 and 26,386,583 shares of Class A common stock outstanding at June 30, 2017 and December 31, 2016, respectively. Additionally, the Company had 256,064 and 499,271 shares outstanding at June 30, 2017 and December 31, 2016, respectively, of restricted Class A common stock issued but not yet vested under the 2014 Omnibus Incentive Plan and the Prior Plan that are not included in shares outstanding until such time that they are vested; however, these shares do have voting and certain dividend rights during the vesting period. On August 5, 2016, the Board of Directors authorized a new share repurchase program for up to $50.0 million from time to time in either the open market or through privately negotiated transactions. The remaining authorization under this program as of June 30, 2017 was $12.6 million.

Income Per Share

Income Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Income Per Share	Note 12 Income Per Share The Company calculates income per share under the two-class method, as certain non-vested share awards contain non-forfeitable rights to dividends. As such, these awards are considered securities that participate in the earnings of the Company. Non-vested shares are discussed further in note 9. The Company had 26,788,833 and 28,810,883 shares of Class A common stock outstanding as of June 30, 2017 and 2016, respectively, exclusive of issued non-vested restricted shares. Certain stock options and non-vested restricted shares are potentially dilutive securities, but are not included in the calculation of diluted income per share because to do so would have been anti-dilutive for the three and six months ended June 30, 2017 and 2016. The following table illustrates the computation of basic and diluted income per share for the three and six months ended June 30, 2017 and 2016: For the three months ended For the six months ended June 30, 2017 June 30, 2016 June 30, 2017 June 30, 2016 Net income $ 9,209 $ 4,504 $ 17,467 $ 4,755 Less: income allocated to participating securities (14) (12) (30) (25) Income allocated to common shareholders $ 9,195 $ 4,492 $ 17,437 $ 4,730 Weighted average shares outstanding for basic income per common share 26,955,187 29,215,822 26,878,904 29,666,570 Dilutive effect of equity awards 642,256 49,461 742,001 37,643 Dilutive effect of warrants — 13,476 16,627 3,166 Weighted average shares outstanding for diluted income per common share 27,597,443 29,278,759 27,637,532 29,707,379 Basic income per share $ 0.34 $ 0.15 $ 0.65 $ Diluted income per share $ 0.33 $ 0.15 $ 0.63 $ The Company had 1,683,867 and 2,703,752 outstanding stock options to purchase common stock at weighted average exercise prices of $20.61 and $19.82 per share at June 30, 2017 and 2016, respectively, which have time-vesting criteria, and as such, any dilution is derived only for the time frame in which the vesting criteria had been met and where the inclusion of those stock options is dilutive. Additionally, 250,750 warrants were exercised in a non-cash transaction during the first quarter of 2017, representing the remaining outstanding warrants to purchase shares of the Company’s common stock. The warrants had an exercise price of $20.00, which were in-the-money for purposes of the dilution calculations during the six months ended June 30, 2017, and three and six months ended June 30, 2016. The Company had 256,064 and 918,890 unvested restricted shares and units issued as of June 30, 2017 and 2016, respectively, which have performance, market and/or time-vesting criteria, and as such, any dilution is derived only for the time frame in which the vesting criteria had been met and where the inclusion of those restricted shares and units is dilutive.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 13 Income Taxes The effective income tax rate for the three and six months ended June 30, 2017 was an expense of 19.10% and 5.1%, respectively, compared to an expense of 17.9% and 19.8% for the three and six months ended June 30, 2016, calculated based on a full year forecast method. The tax expense recorded for the three and six months ended June 30, 2017 was lowered by a $0.5 million and $3.4 million tax benefit from stock compensation activity during the respective periods. Without the discrete items related to stock compensation activity, the three and six month ended June 30, 2017 effective tax rate was consistent period-to-period. The quarterly tax rate differs from the federal statutory rate primarily due to tax benefits from stock compensation activity, interest income from tax-exempt lending, bank-owned life insurance income, and the relationship of these items to pre-tax income. See management’s discussion and analysis for further information.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Note 14 Derivatives Risk management objective of using derivatives The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company has established policies that neither carrying value nor fair value at risk should exceed established guidelines. The Company has designed strategies to confine these risks within the established limits and identify appropriate trade-offs in the financial structure of its balance sheet. These strategies include the use of derivative financial instruments to help achieve the desired balance sheet repricing structure while meeting the desired objectives of its clients. Currently, the Company employs certain interest rate swaps that are designated as fair value hedges as well as economic hedges. The Company manages a matched book with respect to its derivative instruments in order to minimize its net risk exposure resulting from such transactions. Fair values of derivative instrument on the balance sheet The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated statements of financial condition as of June 30, 2017 and December 31, 2016. Information about the valuation methods used to measure fair value is provided in note 16. Asset derivatives fair value Liability derivatives fair value Balance Sheet June 30, December 31, Balance Sheet June 30, December 31, location 2017 2016 location 2017 2016 Derivatives designated as hedging instruments: Interest rate products Other assets $ 8,310 $ 9,528 Other liabilities $ 2,268 $ 1,381 Total derivatives designated as hedging instruments $ 8,310 $ 9,528 $ 2,268 $ 1,381 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 2,384 $ 1,900 Other liabilities $ 2,461 $ 1,898 Interest rate lock commitments Other assets 143 149 Other liabilities — 6 Forward contracts Other assets 14 138 Other liabilities 26 20 Total derivatives not designated as hedging instruments $ 2,541 $ 2,187 $ 2,487 $ 2,085 Fair value hedges Interest rate swaps designated as fair value hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without the exchange of the underlying notional amount. As of June 30, 2017, the Company had 52 interest rate swaps with a notional amount of $372.1 million that were designated as fair value hedges of interest rate risk associated with the Company’s fixed-rate loans. As of December 31, 2016, the Company had 42 interest rate swaps with a notional amount of $313.0 million that were designated as fair value hedges. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. The Company includes the gain or loss on the hedged items in the same line item as the offsetting loss or gain on the related derivatives. During the three and six months ended June 30, 2017, the Company recognized a net loss of $207 thousand and $385 thousand, respectively, in non-interest income related to hedge ineffectiveness. During the three and six months ended June 30 2016, the Company recognized a net loss of $462 thousand and $1.1 million, respectively, in non-interest income related to hedge ineffectiveness. Non-designated hedges Derivatives not designated as hedges are not speculative and consist of interest rate swaps with commercial banking clients that facilitate their respective risk management strategies. Interest rate swaps are simultaneously hedged by offsetting interest rate swaps that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the client swaps and the offsetting swaps are recognized directly in earnings. As of June 30, 2017, the Company had 39 matched interest rate swap transactions with an aggregate notional amount of $161.3 million related to this program. As of December 31, 2016, the Company had 36 matched interest rate swap transactions with an aggregate notional amount of $132.6 million related to this program. As part of its mortgage banking activities, the Company enters into interest rate lock commitments, which are commitments to originate loans where the interest rate on the loan is determined prior to funding and the customers have locked into that interest rate. The Company then locks in the loan and interest rate with an investor and commits to deliver the loan if settlement occurs ("best efforts") or commits to deliver the locked loan in a binding ("mandatory") delivery program with an investor. Fair value changes of certain loans under interest rate lock commitments are hedged with forward sales contracts of MBS. Forward sales contracts of MBS are recorded at fair value with changes in fair value recorded in non-interest income. Interest rate lock commitments and commitments to deliver loans to investors are considered derivatives. The market value of interest rate lock commitments and best efforts contracts are not readily ascertainable with precision because they are not actively traded in stand-alone markets. The Company determines the fair value of interest rate lock commitments and delivery contracts by measuring the fair value of the underlying asset, which is impacted by current interest rates, taking into consideration the probability that the interest rate lock commitments will close or will be funded. Certain additional risks arise from these forward delivery contracts in that the counterparties to the contracts may not be able to meet the terms of the contracts. The Company does not expect any counterparty to any MBS contract to fail to meet its obligation. Additional risks inherent in mandatory delivery programs include the risk that, if the Company fails to deliver the loans subject to interest rate risk lock commitments, it will still be obligated to “pair off” MBS to the counterparty. Should this be required, the Company could incur significant costs in acquiring replacement loans and such costs could have an adverse effect on the consolidated financial statements. The fair value of the mortgage banking derivative is recorded as a freestanding asset or liability with the change in value being recognized in current earnings during the period of change. The Company had 59 interest rate lock commitments with a notional value of $12.4 million and nine forward contracts with a notional value of $10.0 million at June 30, 2017. At December 31, 2016, the Company had 78 interest rate lock commitments, with a notional value of $13.8 million, and eleven forward contracts with a notional value of $11.8 million . Effect of derivative instruments on the consolidated statements of operations The tables below present the effect of the Company’s derivative financial instruments on the consolidated statements of operations for the three and six months ended June 30, 2017 and 2016: Location of gain (loss) Amount of gain (loss) recognized in income on derivatives Derivatives in fair value recognized in income on For the three months ended June 30, For the six months ended June 30, hedging relationships derivatives 2017 2016 2017 2016 Interest rate products Other non-interest income $ (3,169) $ (6,513) $ (2,105) $ (17,414) Total $ (3,169) $ (6,513) $ (2,105) $ (17,414) Location of gain (loss) Amount of gain (loss) recognized in income on hedged items recognized in income on For the three months ended June 30, For the six months ended June 30, Hedged items hedged items 2017 2016 2017 2016 Interest rate products Other non-interest income $ 2,962 $ 6,051 $ 1,720 $ 16,281 Total $ 2,962 $ 6,051 $ 1,720 $ 16,281 Location of gain (loss) Amount of gain (loss) recognized in income on derivatives Derivatives not designated recognized in income on For the three months ended June 30, For the six months ended June 30, as hedging instruments derivatives 2017 2016 2017 2016 Interest rate products Other non-interest expense $ (47) $ (89) $ (79) $ (183) Interest rate lock commitments Gain on sale of mortgages, net (122) 332 1 332 Forward contracts Gain on sale of mortgages, net 63 (178) (131) (178) Total $ (106) $ 65 $ (209) $ (29) Credit-risk-related contingent features The Company has agreements with its derivative counterparties that contain a provision where if the Company defaults on any of its indebtedness for reasons other than an error or omission of an administrative or operational nature, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has agreements with certain of its derivative counterparties that contain a provision where if the Company fails to maintain its status as a well/adequately capitalized institution, then the counterparty has the right to terminate the derivative positions and the Company would be required to settle its obligations under the agreements. As of June 30, 2017 and December 31, 2016, the termination value of derivatives in a net liability position related to these agreements was $1.1 million and $1.3 million, respectively, which includes accrued interest but excludes any adjustment for nonperformance risk. The Company has minimum collateral posting thresholds with certain of its derivative counterparties and as of June 30, 2017 and December 31, 2016, the Company had posted $2.8 million and $0.8 million, respectively, in eligible collateral. If the Company had breached any of these provisions at June 30, 2017, it could have been required to settle its obligations under the agreements at the termination value.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 15 Commitments and Contingencies In the normal course of business, the Company enters into various off-balance sheet commitments to help meet the financing needs of clients. These financial instruments include commitments to extend credit, commercial and consumer lines of credit and standby letters of credit. The same credit policies are applied to these commitments as the loans on the consolidated statements of financial condition; however, these commitments involve varying degrees of credit risk in excess of the amount recognized in the consolidated statements of financial condition. At June 30, 2017 and December 31, 2016, the Company had loan commitments totaling $648.2 million and $602.2 million, respectively, and standby letters of credit that totaled $15.0 million and $13.5 million, respectively. The total amounts of unused commitments do not necessarily represent future credit exposure or cash requirements, as commitments often expire without being drawn upon. However, the contractual amount of these commitments, offset by any additional collateral pledged, represents the Company’s potential credit loss exposure. Total unfunded commitments at June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 December 31, 2016 Commitments to fund loans $ 181,052 $ 149,391 Unfunded commitments under lines of credit 467,180 452,851 Commercial and standby letters of credit 15,030 13,532 Total unfunded commitments $ 663,262 $ 615,774 Commitments to fund loans —Commitments to fund loans are legally binding agreements to lend to clients in accordance with predetermined contractual provisions providing there have been no violations of any conditions specified in the contract. These commitments are generally at variable interest rates and are for specific periods or contain termination clauses and may require the payment of a fee. The total amounts of unused commitments are not necessarily representative of future credit exposure or cash requirements, as commitments often expire without being drawn upon. Unfunded commitments under lines of credit —In the ordinary course of business, the Company extends revolving credit to its clients. These arrangements may require the payment of a fee. Commercial and standby letters of credit —As a provider of financial services, the Company routinely issues commercial and standby letters of credit, which may be financial standby letters of credit or performance standby letters of credit. These are various forms of “back-up” commitments to guarantee the performance of a client to a third party. While these arrangements represent a potential cash outlay for the Company, the majority of these letters of credit will expire without being drawn upon. Letters of credit are subject to the same underwriting and credit approval process as traditional loans, and as such, many of them have various forms of collateral securing the commitment, which may include real estate, personal property, receivables or marketable securities. Contingencies In the ordinary course of business, the Company and the Bank may be subject to litigation. Based upon the available information and advice from the Company’s legal counsel, management does not believe that any potential, threatened or pending litigation to which it is a party will have a material adverse effect on the Company’s liquidity, financial condition or results of operations.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 16 Fair Value Measurements The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to disclose the fair value of its financial instruments. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. For disclosure purposes, the Company groups its financial and non-financial assets and liabilities into three different levels based on the nature of the instrument and the availability and reliability of the information that is used to determine fair value. The three levels are defined as follows: · Level 1—Includes assets or liabilities in which the inputs to the valuation methodologies are based on unadjusted quoted prices in active markets for identical assets or liabilities. · Level 2—Includes assets or liabilities in which the inputs to the valuation methodologies are based on similar assets or liabilities in inactive markets, quoted prices for identical or similar assets or liabilities in inactive markets, and inputs other than quoted prices that are observable, such as interest rates, yield curves, volatilities, prepayment speeds, and other inputs obtained from observable market input. · Level 3—Includes assets or liabilities in which the inputs to the valuation methodology are based on at least one significant assumption that is not observable in the marketplace. These valuations may rely on management’s judgment and may include internally-developed model-based valuation techniques. Level 1 inputs are considered to be the most transparent and reliable and level 3 inputs are considered to be the least transparent and reliable. The Company assumes the use of the principal market to conduct a transaction of each particular asset or liability being measured and then considers the assumptions that market participants would use when pricing the asset or liability. Whenever possible, the Company first looks for quoted prices for identical assets or liabilities in active markets (level 1 inputs) to value each asset or liability. However, when inputs from identical assets or liabilities on active markets are not available, the Company utilizes market observable data for similar assets and liabilities. The Company maximizes the use of observable inputs and limits the use of unobservable inputs to occasions when observable inputs are not available. The need to use unobservable inputs generally results from the lack of market liquidity of the actual financial instrument or of the underlying collateral. Although, in some instances, third party price indications may be available, limited trading activity can challenge the observability of these quotations. Changes in the valuation inputs used for measuring the fair value of financial instruments may occur due to changes in current market conditions or other factors. Such changes may necessitate a transfer of the financial instruments to another level in the hierarchy based on the new inputs used. The Company recognizes these transfers at the end of the reporting period that the transfer occurs. During the six months ended June 30, 2017 and 2016, there were no transfers of financial instruments between the hierarchy levels. The following is a description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of each instrument under the valuation hierarchy: Fair Value of Financial Instruments Measured on a Recurring Basis Investment securities available-for-sale —Investment securities available-for-sale are carried at fair value on a recurring basis. To the extent possible, observable quoted prices in an active market are used to determine fair value and, as such, these securities are classified as level 1. At June 30, 2017 and December 31, 2016, the Company did not hold any level 1 securities. When quoted market prices in active markets for identical assets or liabilities are not available, quoted prices of securities with similar characteristics, discounted cash flows or other pricing characteristics are used to estimate fair values and the securities are then classified as level 2. Interest rate swap derivatives —The Company's derivative instruments are limited to interest rate swaps that may be accounted for as fair value hedges or non-designated hedges. The fair values of the swaps incorporate credit valuation adjustments in order to appropriately reflect nonperformance risk in the fair value measurements. The credit valuation adjustment is the dollar amount of the fair value adjustment related to credit risk and utilizes a probability weighted calculation to quantify the potential loss over the life of the trade. The credit valuation adjustments are calculated by determining the total expected exposure of the derivatives (which incorporates both the current and potential future exposure) and then applying the respective counterparties’ credit spreads to the exposure offset by marketable collateral posted, if any. Certain derivative transactions are executed with counterparties who are large financial institutions ("dealers"). International Swaps and Derivative Association Master Agreements ("ISDA") and Credit Support Annexes ("CSA") are employed for all contracts with dealers. These contracts contain bilateral collateral arrangements. The fair value inputs of these financial instruments are determined using discounted cash flow analysis through the use of third-party models whose significant inputs are readily observable market parameters, primarily yield curves, with appropriate adjustments for liquidity and credit risk, and are classified as level 2. Mortgage banking derivatives —The Company relies on a third-party pricing service to value its mortgage banking derivative financial assets and liabilities, which the Company classifies as a level 3 valuation. The external valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held for sale includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated pull-through rate based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment groups. The Company also relies on an external valuation model to estimate the fair value of its forward commitments to sell residential mortgage loans (i.e., an estimate of what the Company would receive or pay to terminate the forward delivery contract based on market prices for similar financial instruments), which includes matching specific terms and maturities of the forward commitments against applicable investor pricing. The tables below present the financial instruments measured at fair value on a recurring basis as of June 30, 2017 and December 31, 2016 on the consolidated statements of financial condition utilizing the hierarchy structure described above: June 30, 2017 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 195,341 $ — $ 195,341 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 668,631 — 668,631 Municipal securities — 2,058 — 2,058 Interest rate swap derivatives — 10,694 — 10,694 Mortgage banking derivatives — — 157 Total assets at fair value $ — $ 876,724 $ 157 $ 876,881 Liabilities: Interest rate swap derivatives $ — $ 4,729 $ — $ 4,729 Mortgage banking derivatives — — 26 Total liabilities at fair value $ — $ 4,729 $ 26 $ 4,755 December 31, 2016 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 227,160 $ — $ 227,160 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 652,739 — 652,739 Municipal securities — 3,648 — 3,648 Interest rate swap derivatives — 11,428 — 11,428 Mortgage banking derivatives — — 287 Total assets at fair value $ — $ 894,975 $ 287 $ 895,262 Liabilities: Interest rate swap derivatives $ — $ 3,279 $ — $ 3,279 Mortgage banking derivatives — — 26 Total liabilities at fair value $ — $ 3,279 $ 26 $ 3,305 The table below details the changes in level 3 financial instruments during the six months ended June 30, 2017 and June 30, 2016: Mortgage banking derivatives, net Balance at December 31, 2016 $ 261 Loss included in earnings, net (130) Balance at June 30, 2017 $ Fair Value of Financial Instruments Measured on a Non-recurring Basis Certain assets may be recorded at fair value on a non-recurring basis as conditions warrant. These non-recurring fair value measurements typically result from the application of lower of cost or fair value accounting or a write-down occurring during the period. The Company records collateral dependent loans that are considered to be impaired at their estimated fair value. A loan is considered impaired when it is probable that the Company will be unable to collect all contractual amounts due in accordance with the terms of the loan agreement. Collateral dependent impaired loans are measured based on the fair value of the collateral. The Company relies on third-party appraisals and internal assessments in determining the estimated fair values of these loans. The inputs used to determine the fair values of loans are considered level 3 inputs in the fair value hierarchy. At June 30, 2017, the Company measured seven loans not accounted for under ASC 310-30 at fair value on a non-recurring basis, with a carrying balance of $14.5 million and specific reserve balance of $6.2 million. At June 30, 2016, the Company measured six loans with a total carrying balance of $30.1 million and total specific reserves of $14.9 million. The Company may be required to record fair value adjustments on loans held-for-sale on a non-recurring basis. The non-recurring fair value adjustments could involve lower of cost or fair value accounting and may include write-downs. OREO is recorded at the lower of the cost basis or the fair value of the collateral less estimated selling costs. The estimated fair values of OREO are updated periodically and further write-downs may be taken to reflect a new basis. The Company recognized $46 thousand and $104 thousand of OREO impairments in its consolidated statements of operations during the six months ended June 30, 2017 and 2016, respectively. The fair values of OREO are derived from third party price opinions or appraisals that generally use an income approach or a market value approach. If reasonable comparable appraisals are not available, then the Company may use internally developed models to determine fair values. The inputs used to determine the fair values of OREO are considered level 3 inputs in the fair value hierarchy. The table below provides information regarding the assets recorded at fair value on a non-recurring basis during the six months ended June 30, 2017 and 2016: June 30, 2017 Total Losses from fair value changes Other real estate owned $ 14,297 $ 46 Impaired loans 39,379 327 June 30, 2016 Total Losses from fair value changes Other real estate owned $ 23,242 $ 104 Impaired loans 46,815 4,019 The Company did not record any liabilities for which the fair value was made on a non-recurring basis during the six months ended June 30, 2017. The following table provides information about the valuation techniques and unobservable inputs used in the valuation of financial instruments classified as level 3 of the fair value hierarchy as of June 30, 2017. The table below excludes non-recurring fair value measurements of collateral value used for impairment measures for OREO and premises and equipment, and other available-for-sale and municipal securities valued at par. The below valuation utilizes third party appraisal or broker price opinions, and is classified as level 3 due to the significant judgment involved: Fair value at June 30, 2017 Valuation technique Unobservable input Qualitative measures Impaired loans 39,379 Appraised value Appraised values Discount rate 0% - 25%

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 17 Fair Value of Financial Instruments The fair value of a financial instrument is the amount that would be exchanged between willing parties, other than in a forced liquidation. Fair value is determined based upon quoted market prices to the extent possible; however, in many instances, there are no quoted market prices for the Company’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques that may be significantly impacted by the assumptions used, including the discount rate and estimates of future cash flows. Changes in any of these assumptions could significantly affect the fair value estimates. The fair value of the financial instruments listed below does not reflect a premium or discount that could result from offering all of the Company’s holdings of financial instruments at one time, nor does it reflect the underlying value of the Company, as ASC Topic 825 excludes certain financial instruments and all non-financial instruments from its disclosure requirements. The fair value of financial instruments at June 30, 2017 and December 31, 2016, including methods and assumptions utilized for determining fair value of financial instruments, are set forth below: Level in fair value June 30, 2017 December 31, 2016 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 129,827 $ 129,827 $ 152,736 $ 152,736 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 195,341 195,341 227,160 227,160 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 668,631 668,631 652,739 652,739 Municipal securities Level 2 2,058 2,058 3,648 3,648 Municipal securities Level 3 265 265 265 265 Other available-for-sale securities Level 3 419 419 419 419 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 233,026 234,194 263,411 264,862 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 61,865 60,675 69,094 67,711 Non-marketable securities Level 2 18,468 18,468 14,949 14,949 Loans receivable Level 3 3,087,945 3,096,298 2,860,921 2,879,860 Loans held-for-sale Level 2 7,067 7,067 24,187 24,187 Accrued interest receivable Level 2 13,294 13,294 12,562 12,562 Interest rate swap derivatives Level 2 10,694 10,694 11,428 11,428 Mortgage banking derivatives Level 3 287 287 LIABILITIES Deposit transaction accounts Level 2 2,730,976 2,730,976 2,696,603 2,696,603 Time deposits Level 2 1,126,481 1,126,481 1,172,046 1,172,046 Securities sold under agreements to repurchase Level 2 119,213 119,213 92,011 92,011 Federal Home Loan Bank advances Level 2 129,115 130,642 38,665 39,324 Accrued interest payable Level 2 5,098 5,098 4,973 4,973 Interest rate swap derivatives Level 2 4,729 4,729 3,279 3,279 Mortgage banking derivatives Level 3 187 187 Cash and cash equivalents Cash and cash equivalents have a short-term nature and the estimated fair value is equal to the carrying value. Investment securities The estimated fair value of investment securities is based on quoted market prices or bid quotations received from securities dealers. Other investment securities, including securities that are held for regulatory purposes are carried at cost, less any other- than-temporary impairment. Loans receivable The estimated fair value of the loan portfolio is estimated using a discounted cash flow analysis using a discount rate based on interest rates offered at the respective measurement dates for loans with similar terms to borrowers of similar credit quality. The allowance for loan losses is considered a reasonable estimate of any required adjustment to fair value to reflect the impact of credit risk. The estimates of fair value do not incorporate the exit-price concept prescribed by ASC Topic 820, Fair Value Measurements and Disclosures . Loans held-for-sale Loans held-for-sale are carried at the lower of aggregate cost or estimated fair value. The portfolio consists primarily of fixed rate residential mortgage loans that are sold within 45 days. The estimated fair value is based on quoted market prices for similar loans in the secondary market and is classified as level 2. Accrued interest receivable Accrued interest receivable has a short-term nature and the estimated fair value is equal to the carrying value. Deposits The estimated fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, savings, NOW accounts, and money market accounts, is equal to the amount payable on demand. The fair value of interest-bearing time deposits is based on the discounted value of contractual cash flows of such deposits, taking into account the option for early withdrawal. The discount rate is estimated using the rates offered by the Company, at the respective measurement dates, for deposits of similar remaining maturities. The fair value of time deposits has a floor equal to the carrying value as the amount payable on demand would approximate the carrying value. Derivative assets and liabilities Fair values for derivative assets and liabilities are fully described in note 16 of the consolidated financial statements. Securities sold under agreements to repurchase The vast majority of the Company’s repurchase agreements are overnight transactions that mature the day after the transaction, and as a result of this short-term nature, the estimated fair value is equal to the carrying value. Accrued interest payable Accrued interest payable has a short-term nature and the estimated fair value is equal to the carrying value.

Investment Securities - (Tables

Investment Securities - (Tables)	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	At June 30, 2017 and December 31, 2016, the Company held $0.9 billion of available-for-sale investment securities. Available-for-sale securities are summarized as follows as of the dates indicated: June 30, 2017 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 192,369 $ 3,476 $ (504) $ 195,341 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 680,040 1,604 (13,013) 668,631 Municipal securities 2,323 — — 2,323 Other securities 419 — — 419 Total $ 875,151 $ 5,080 $ (13,517) $ 866,714 December 31, 2016 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 223,781 $ 3,909 $ (530) $ 227,160 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 666,616 2,124 (16,001) 652,739 Municipal securities 3,921 — (7) 3,914 Other securities 419 — — 419 Total $ 894,737 $ 6,033 $ (16,538) $ 884,232
Summary of unrealized losses for available-for-sale securities	The table below summarizes the available-for-sale securities with unrealized losses as of the dates shown, along with the length of the impairment period: June 30, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 79,548 $ (504) $ — $ — $ 79,548 $ (504) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 148,819 (2,279) 354,843 (10,734) 503,662 (13,013) Total $ 228,367 $ (2,783) $ 354,843 $ (10,734) $ 583,210 $ (13,517) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 100,898 $ (530) $ — $ — $ 100,898 $ (530) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 137,576 (2,976) 385,707 (13,025) 523,283 (16,001) Municipal securities 3,058 (7) — — 3,058 (7) Total $ 241,532 $ (3,513) $ 385,707 $ (13,025) $ 627,239 $ (16,538)
Held-to-maturity Securities	Held-to-maturity investment securities are summarized as follows as of the dates indicated: June 30, 2017 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 233,026 $ 1,332 $ (164) $ 234,194 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 61,865 11 (1,201) 60,675 Total investment securities held-to-maturity $ 294,891 $ 1,343 $ (1,365) $ 294,869 December 31, 2016 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 263,411 $ 1,685 $ (234) $ 264,862 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 69,094 16 (1,399) 67,711 Total investment securities held-to-maturity $ 332,505 $ 1,701 $ (1,633) $ 332,573
Summary of unrealized losses for held-to-maturity securities	The table below summarizes the held-to-maturity securities with unrealized losses as of the dates shown, along with the length of the impairment period: June 30, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 25,512 $ (164) $ — $ — $ 25,512 $ (164) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 23,861 (306) 29,244 (895) 53,105 (1,201) Total $ 49,373 $ (470) $ 29,244 $ (895) $ 78,617 $ (1,365) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 27,799 $ (234) $ — $ — $ 27,799 $ (234) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 26,992 (357) 32,146 (1,042) 59,138 (1,399) Total $ 54,791 $ (591) $ 32,146 $ (1,042) $ 86,937 $ (1,633)

Loans - (Tables)

Loans - (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Loan Portfolio Composition Including Carrying Value by Segment of Loans Accounted for under ASC Topic 310-30 and Loans Covered by the FDIC Loss Sharing Agreements	The carrying value of loans is net of discounts on loans excluded from ASC 310-30, and fees and costs of $4.9 million and $6.3 million as of June 30, 2017 and December 31, 2016, respectively. At December 31, 2016, $14.4 million of non 310-30 loans were held-for-sale, most of which were in the residential real estate segment. The sale of these loans was completed in connection with the four banking center divestitures in the second quarter of 2017. June 30, 2017 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 35,978 $ 1,739,476 $ 1,775,454 Commercial real estate non-owner occupied 83,785 473,235 557,020 Residential real estate 14,012 714,499 728,511 Consumer 652 26,308 26,960 Total $ 134,427 $ 2,953,518 $ 3,087,945 December 31, 2016 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 39,280 $ 1,521,150 $ 1,560,430 Commercial real estate non-owner occupied 89,150 437,642 526,792 Residential real estate 16,524 728,361 744,885 Consumer 898 27,916 28,814 Total $ 145,852 $ 2,715,069 $ 2,860,921
Past Due Financing Receivables	Delinquency for loans excluded from ASC 310-30 is shown in the following tables at June 30, 2017 and December 31, 2016, respectively: June 30, 2017 Greater Total Loans > 90 30-59 60-89 than 90 non days past days past days past days past Total past 310-30 due and Non- due due due due Current loans still accruing accrual Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 658 $ 228 $ 4,135 $ 5,021 $ 1,270,834 $ 1,275,855 $ — $ 7,780 Owner occupied commercial real estate 890 — 52 942 232,988 233,930 — 4,377 Agriculture 512 — 435 947 130,451 131,398 — 2,208 Energy — — 6,613 6,613 91,680 98,293 — 12,050 Total commercial 2,060 228 11,235 13,523 1,725,953 1,739,476 — 26,415 Commercial real estate non-owner occupied: Construction — — 215 215 121,441 121,656 215 — Acquisition/development 334 — — 334 16,008 16,342 — — Multifamily — — — — 41,430 41,430 — — Non-owner occupied 135 — — 135 293,672 293,807 — 35 Total commercial real estate 469 — 215 684 472,551 473,235 215 35 Residential real estate: Senior lien 854 1,667 1,298 3,819 658,403 662,222 — 5,286 Junior lien 185 47 8 240 52,037 52,277 — 557 Total residential real estate 1,039 1,714 1,306 4,059 710,440 714,499 — 5,843 Consumer 69 19 6 94 26,214 26,308 — 162 Total loans excluded from ASC 310-30 $ 3,637 $ 1,961 $ 12,762 $ 18,360 $ 2,935,158 $ 2,953,518 $ 215 $ 32,455 December 31, 2016 Greater Total Loans > 90 30-59 60-89 than 90 non days past days past days past days past Total past 310-30 due and Non- due due due due Current loans still accruing accrual Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 3,134 $ 4,009 $ 1,078 $ 8,221 $ 1,066,475 $ 1,074,696 $ — $ 8,688 Owner occupied commercial real estate 583 216 56 855 220,689 221,544 — 2,056 Agriculture 501 — — 501 134,136 134,637 — 1,905 Energy 2 — 6,548 6,550 83,723 90,273 — 12,645 Total commercial 4,220 4,225 7,682 16,127 1,505,023 1,521,150 — 25,294 Commercial real estate non-owner occupied: Construction — — — — 90,314 90,314 — — Acquisition/development — — — — 13,306 13,306 — — Multifamily — — — — 24,954 24,954 — — Non-owner occupied — — 28 28 309,040 309,068 — 66 Total commercial real estate — — 28 28 437,614 437,642 — 66 Residential real estate: Senior lien 888 645 1,458 2,991 672,699 675,690 — 4,522 Junior lien 115 61 22 198 52,473 52,671 — 654 Total residential real estate 1,003 706 1,480 3,189 725,172 728,361 — 5,176 Consumer 83 8 — 91 27,825 27,916 — 181 Total loans excluded from ASC 310-30 $ 5,306 $ 4,939 $ 9,190 $ 19,435 $ 2,695,634 $ 2,715,069 $ — $ 30,717
Credit Exposure for Loans as Determined by Company's Internal Risk Rating System	Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows as of June 30, 2017 and December 31, 2016, respectively: June 30, 2017 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,243,638 $ 13,978 $ 15,472 $ 2,767 $ 1,275,855 Owner occupied commercial real estate 222,882 4,607 6,196 245 233,930 Agriculture 106,022 22,668 2,674 34 131,398 Energy 86,243 — 5,998 6,052 98,293 Total commercial 1,658,785 41,253 30,340 9,098 1,739,476 Commercial real estate non-owner occupied: Construction 121,441 — 215 — 121,656 Acquisition/development 13,844 2,498 — — 16,342 Multifamily 39,255 — 2,175 — 41,430 Non-owner occupied 291,007 1,566 1,234 — 293,807 Total commercial real estate 465,547 4,064 3,624 — 473,235 Residential real estate: Senior lien 656,249 251 5,709 13 662,222 Junior lien 51,404 — 873 — 52,277 Total residential real estate 707,653 251 6,582 13 714,499 Consumer 26,086 56 166 — 26,308 Total loans excluded from ASC 310-30 $ 2,858,071 $ 45,624 $ 40,712 $ 9,111 $ 2,953,518 Loans accounted for under ASC 310-30: Commercial $ 27,799 $ 1,105 $ 7,074 $ — $ 35,978 Commercial real estate non-owner occupied 54,207 1,701 27,877 — 83,785 Residential real estate 11,234 1,088 1,690 — 14,012 Consumer 464 12 176 — 652 Total loans accounted for under ASC 310-30 $ 93,704 $ 3,906 $ 36,817 $ — $ 134,427 Total loans $ 2,951,775 $ 49,530 $ 77,529 $ 9,111 $ 3,087,945 December 31, 2016 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,041,326 $ 7,243 $ 25,636 $ 491 $ 1,074,696 Owner occupied commercial real estate 202,036 9,371 10,137 — 221,544 Agriculture 123,809 8,922 1,906 — 134,637 Energy 77,619 — 7,811 4,843 90,273 Total commercial 1,444,790 25,536 45,490 5,334 1,521,150 Commercial real estate non-owner occupied: Construction 90,099 — 215 — 90,314 Acquisition/development 10,758 2,548 — — 13,306 Multifamily 22,495 238 2,221 — 24,954 Non-owner occupied 300,922 5,895 2,251 — 309,068 Total commercial real estate 424,274 8,681 4,687 — 437,642 Residential real estate: Senior lien 669,148 1,215 5,316 11 675,690 Junior lien 51,250 178 1,243 — 52,671 Total residential real estate 720,398 1,393 6,559 11 728,361 Consumer 27,669 59 188 — 27,916 Total loans excluded from ASC 310-30 $ 2,617,131 $ 35,669 $ 56,924 $ 5,345 $ 2,715,069 Loans accounted for under ASC 310-30: Commercial $ 27,436 $ 610 $ 11,234 $ — $ 39,280 Commercial real estate non-owner occupied 38,895 967 45,520 3,768 89,150 Residential real estate 12,477 1,327 2,720 — 16,524 Consumer 721 17 160 — 898 Total loans accounted for under ASC 310-30 $ 79,529 $ 2,921 $ 59,634 $ 3,768 $ 145,852 Total loans $ 2,696,660 $ 38,590 $ 116,558 $ 9,113 $ 2,860,921
Schedule Of Impaired Financing Receivable With And Without Related Allowance	Additional information regarding impaired loans at June 30, 2017 and December 31, 2016 is set forth in the table below: June 30, 2017 December 31, 2016 Allowance Allowance Unpaid for loan Unpaid for loan principal Recorded losses principal Recorded losses balance investment allocated balance investment allocated With no related allowance recorded: Commercial: Commercial and industrial $ 6,712 $ 5,387 $ — $ 8,671 $ 7,495 $ — Owner occupied commercial real estate 3,954 3,755 — 3,350 3,197 — Agriculture 1,581 1,377 — 2,044 1,987 — Energy 16,548 5,437 — 17,142 6,105 — Total commercial 28,795 15,956 — 31,207 18,784 — Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily 31 31 — 33 33 — Non-owner occupied 357 306 — 394 343 — Total commercial real estate 388 337 — 427 376 — Residential real estate: Senior lien 345 328 — 1,551 1,426 — Junior lien — — — 54 51 — Total residential real estate 345 328 — 1,605 1,477 — Consumer — — — 4 4 — Total impaired loans with no related allowance recorded $ 29,528 $ 16,621 $ — $ 33,243 $ 20,641 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 4,681 $ 4,642 $ 2,767 $ 3,495 $ 3,464 $ 492 Owner occupied commercial real estate 2,585 2,336 248 957 642 2 Agriculture 938 911 35 — — — Energy 6,613 6,613 3,148 11,216 6,548 1,866 Total commercial 14,817 14,502 6,198 15,668 10,654 2,360 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 220 214 1 261 255 1 Total commercial real estate 220 214 1 261 255 1 Residential real estate: Senior lien 7,162 6,486 36 5,646 5,016 31 Junior lien 1,634 1,391 10 1,781 1,532 14 Total residential real estate 8,796 7,877 46 7,427 6,548 45 Consumer 170 165 1 188 184 2 Total impaired loans with a related allowance recorded $ 24,003 $ 22,758 $ 6,246 $ 23,544 $ 17,641 $ 2,408 Total impaired loans $ 53,531 $ 39,379 $ 6,246 $ 56,787 $ 38,282 $ 2,408
Schedule of Impaired Financing Receivable, Average Recorded Investment and Interest Income Recognized	The table below shows additional information regarding the average recorded investment and interest income recognized on impaired loans for the periods presented: For the three months ended June 30, 2017 June 30, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 6,645 $ 25 $ 4,279 $ 70 Owner occupied commercial real estate 3,789 23 1,825 20 Agriculture 1,454 — 1,758 — Energy 5,680 — — — Total commercial 17,568 48 7,862 90 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 312 5 — — Total commercial real estate 312 5 — — Residential real estate: Senior lien 330 — 1,296 8 Junior lien — — 134 — Total residential real estate 330 — 1,430 8 Consumer — — — — Total impaired loans with no related allowance recorded $ 18,210 $ 53 $ 9,292 $ 98 With a related allowance recorded: Commercial: Commercial and industrial $ 4,643 $ — $ 4,144 $ — Owner occupied commercial real estate 2,340 7 842 4 Agriculture 912 1 178 1 Energy 6,624 — 25,975 — Total commercial 14,519 8 31,139 5 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 31 — 35 — Non-owner occupied 216 2 814 10 Total commercial real estate 247 2 849 10 Residential real estate: Senior lien 6,525 20 5,149 28 Junior lien 1,403 12 1,652 14 Total residential real estate 7,928 32 6,801 42 Consumer 169 — 241 — Total impaired loans with a related allowance recorded $ 22,863 $ 42 $ 39,030 $ 57 Total impaired loans $ 41,073 $ 95 $ 48,322 $ 155 For the six months ended June 30, 2017 June 30, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 7,030 $ 73 $ 4,564 $ 138 Owner occupied commercial real estate 3,834 41 1,869 49 Agriculture 1,531 — 1,758 — Energy 5,889 — — — Total Commercial 18,284 114 8,191 187 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 320 12 — — Total commercial real estate 320 12 — — Residential real estate: Senior lien 334 — 1,312 14 Junior lien — — 136 1 Total residential real estate 334 — 1,448 15 Consumer — — — — Total impaired loans with no related allowance recorded $ 18,938 $ 126 $ 9,639 $ 202 With a related allowance recorded: Commercial: Commercial and industrial $ 4,630 $ — $ 4,312 $ — Owner occupied commercial real estate 2,349 11 865 7 Agriculture 914 3 179 3 Energy 6,602 — 26,005 — Total Commercial 14,495 14 31,361 10 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 31 1 36 1 Non-owner occupied 220 5 823 24 Total commercial real estate 251 6 859 25 Residential real estate: Senior lien 6,583 40 5,212 53 Junior lien 1,421 25 1,670 27 Total residential real estate 8,004 65 6,882 80 Consumer 175 — 242 — Total impaired loans with a related allowance recorded $ 22,925 $ 85 $ 39,344 $ 115 Total impaired loans $ 41,863 $ 211 $ 48,983 $ 317
Additional Information Related to Accruing TDR's	The table below provides additional information related to accruing TDRs at June 30, 2017 and December 31, 2016: June 30, 2017 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,258 $ 3,270 $ 3,488 $ 100 Commercial real estate non-owner occupied 491 510 543 — Residential real estate 1,424 1,450 1,435 2 Consumer 4 5 4 — Total $ 5,177 $ 5,235 $ 5,470 $ 102 December 31, 2016 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,302 $ 3,440 $ 3,464 $ 100 Commercial real estate non-owner occupied 538 572 590 — Residential real estate 1,920 1,996 1,969 2 Consumer 7 9 7 — Total $ 5,767 $ 6,017 $ 6,030 $ 102
Summary of Company's Carrying Value of Non-Accrual TDR's	The following table summarizes the Company’s carrying value of non-accrual TDRs as of June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Commercial $ 20,246 $ 15,265 Commercial real estate non-owner occupied — — Residential real estate 1,308 1,301 Consumer 127 142 Total non-accruing TDRs $ 21,681 $ 16,708
Re-Measurement of Loans Accounted for Under ASC Topic 310-30 Resulting in Changes in Carrying Amount of Accretable Yield	The re-measurement of loans accounted for under ASC 310-30 resulted in the following changes in the carrying amount of accretable yield during the six months ended June 30, 2017 and 2016: June 30, 2017 June 30, 2016 Accretable yield beginning balance $ 60,476 $ 84,194 Reclassification from non-accretable difference 7,732 5,646 Reclassification to non-accretable difference (494) (4,019) Accretion (12,051) (18,056) Accretable yield ending balance $ 55,663 $ 67,765
Composition of Net Book Value for Loans Accounted for under ASC Topic 310-30	Below is the composition of the net book value for loans accounted for under ASC 310-30 at June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Contractual cash flows $ 514,149 $ 537,611 Non-accretable difference (324,059) (331,283) Accretable yield (55,663) (60,476) Loans accounted for under ASC 310-30 $ 134,427 $ 145,852

Allowance for Loan Losses - (Ta

Allowance for Loan Losses - (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Summary of Company's Allowance for Loan Losses ("ALL") and Recorded Investment in Loans	The tables below detail the Company’s allowance for loan losses (“ALL”) and recorded investment in loans as of and for the three and six months ended June 30, 2017 and 2016: Three months ended June 30, 2017 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Non 310-30 beginning balance 20,539 5,599 4,216 276 30,630 Charge-offs — — (2) (119) (121) Recoveries 30 10 110 55 205 Provision 4,087 191 (257) 82 4,103 Non 310-30 ending balance 24,656 5,800 4,067 294 34,817 ASC 310-30 beginning balance — 216 — 4 220 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision — (82) — 4 (78) ASC 310-30 ending balance — 134 — 8 142 Ending balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Three months ended June 30, 2016 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Non 310-30 beginning balance 28,610 3,803 4,289 249 36,951 Charge-offs (3,375) — (140) (171) (3,686) Recoveries 12 56 16 126 210 Provision 4,733 1,298 339 30 6,400 Non 310-30 ending balance 29,980 5,157 4,504 234 39,875 ASC 310-30 beginning balance 74 58 36 47 215 Charge-offs — (41) — — (41) Recoveries — — — — — (Recoupment) provision (72) 194 (36) (29) 57 ASC 310-30 ending balance 2 211 — 18 231 Ending balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Six months ended June 30, 2017 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 18,821 $ 5,642 $ 4,387 $ 324 $ 29,174 Non 310-30 beginning balance 18,821 5,422 4,387 319 28,949 Charge-offs (20) — (10) (301) (331) Recoveries 41 20 113 122 296 Provision 5,814 358 (423) 154 5,903 Non 310-30 ending balance 24,656 5,800 4,067 294 34,817 ASC 310-30 beginning balance — 220 — 5 225 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision — (86) — 3 (83) ASC 310-30 ending balance — 134 — 8 142 Ending balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 6,197 $ 1 $ 45 $ 1 $ 6,244 Non 310-30 loans collectively evaluated for impairment 18,459 5,799 4,022 293 28,573 ASC 310-30 loans — 134 — 8 142 Total ending allowance balance $ 24,656 $ 5,934 $ 4,067 $ 302 $ 34,959 Loans: Non 310-30 individually evaluated for impairment $ 30,458 $ 551 $ 8,205 $ 165 $ 39,379 Non 310-30 collectively evaluated for impairment 1,709,018 472,684 706,294 26,143 2,914,139 ASC 310-30 loans 35,978 83,785 14,012 652 134,427 Total loans $ 1,775,454 $ 557,020 $ 728,511 $ 26,960 $ 3,087,945 Six months ended June 30, 2016 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 17,261 $ 4,166 $ 5,281 $ 411 $ 27,119 Non 310-30 beginning balance 16,473 3,939 5,245 385 26,042 Charge-offs (3,484) (276) (197) (388) (4,345) Recoveries 24 65 23 185 297 Provision 16,967 1,429 (567) 52 17,881 Non 310-30 ending balance 29,980 5,157 4,504 234 39,875 ASC 310-30 beginning balance 788 227 36 26 1,077 Charge-offs — (41) — — (41) Recoveries — — — — — (Recoupment) provision (786) 25 (36) (8) (805) ASC 310-30 ending balance 2 211 — 18 231 Ending balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 14,933 $ 3 $ 39 $ 2 $ 14,977 Non 310-30 loans collectively evaluated for impairment 15,047 5,154 4,465 232 24,898 ASC 310-30 loans 2 211 — 18 231 Total ending allowance balance $ 29,982 $ 5,368 $ 4,504 $ 252 $ 40,106 Loans: Non 310-30 individually evaluated for impairment $ 37,265 $ 842 $ 7,369 $ 240 $ 45,716 Non 310-30 collectively evaluated for impairment 1,406,609 423,178 667,461 26,258 2,523,506 ASC 310-30 loans 46,875 101,719 19,341 1,347 169,282 Total loans $ 1,490,749 $ 525,739 $ 694,171 $ 27,845 $ 2,738,504

Other Real Estate Owned - (Tabl

Other Real Estate Owned - (Tables)	6 Months Ended
	Jun. 30, 2017
FDIC Loss-Sharing Related
Summary of Activity in OREO Balances	The table below details the OREO activity during the six months ended June 30, 2017 and 2016: For the six months ended June 30, 2017 2016 Beginning balance $ 15,662 $ 20,814 Transfers from loan portfolio, at fair value 639 3,654 Impairments (46) (104) Sales, net (1,958) (1,122) Ending balance $ 14,297 $ 23,242

Regulatory Capital - (Tables)

Regulatory Capital - (Tables)	6 Months Ended
	Jun. 30, 2017
FDIC Loss-Sharing Related
Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements	The following table sets forth the capital ratios of the Company and the Bank at June 30, 2017 and December 31, 2016. June 30, 2017 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated $ 472,627 N/A N/A $ 184,402 NBH Bank 385,466 $ 206,721 183,752 Common equity tier 1 risk-based capital: Consolidated $ 472,627 N/A N/A $ 207,452 NBH Bank 385,466 $ 298,597 206,721 Tier 1 risk-based capital ratio: Consolidated $ 472,627 N/A N/A $ 213,366 NBH Bank 385,466 $ 283,313 212,485 Total risk-based capital ratio: Consolidated $ 507,912 N/A N/A $ 284,488 NBH Bank 420,750 $ 354,141 283,313 December 31, 2016 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated $ 470,259 N/A N/A $ 181,019 NBH Bank 389,189 $ 202,903 180,358 Common equity tier 1 risk-based capital: Consolidated $ 470,259 N/A N/A $ 203,647 NBH Bank 389,189 $ 293,082 202,903 Tier 1 risk-based capital ratio: Consolidated $ 470,259 N/A N/A $ 199,467 NBH Bank 389,189 $ 264,596 198,447 Total risk-based capital ratio: Consolidated $ 499,759 N/A N/A $ 265,955 NBH Bank 418,689 $ 330,745 264,596

Stock-based Compensation and 32

Stock-based Compensation and Benefits - (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Option Activity	The Company issued stock options in accordance with the 2014 Plan during 2017. The following table summarizes stock option activity for the six months ended June 30, 2017: Weighted average Weighted remaining average contractual Aggregate exercise term in intrinsic Options price years value Outstanding at December 31, 2016 2,185,922 $ 19.81 4.85 $ 7,753 Granted 99,920 33.98 Exercised (585,750) 19.93 Forfeited (16,225) 21.84 Outstanding at June 30, 2017 1,683,867 $ 20.61 4.52 $ 21,136 Options exercisable at June 30, 2017 1,429,584 $ 19.80 3.77 $ 19,021 Options expected to vest 1,662,690 $ 20.53 4.46 $ 20,994
Summary of Restricted Stock Activity	The following table summarizes restricted stock and performance stock activity during the six months ended June 30, 2017: Weighted Weighted Restricted average grant- Performance average grant- shares date fair value stock units date fair value Unvested at December 31, 2016 499,271 $ 15.82 85,295 $ 18.22 Granted 65,990 33.43 49,758 33.22 Vested (298,086) 15.27 — — Forfeited (11,111) 22.23 (5,994) 20.90 Unvested at June 30, 2017 256,064 $ 20.82 129,059 $ 23.88

Income Per Share - (Tables)

Income Per Share - (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Income (Loss) Per Share	The following table illustrates the computation of basic and diluted income per share for the three and six months ended June 30, 2017 and 2016: For the three months ended For the six months ended June 30, 2017 June 30, 2016 June 30, 2017 June 30, 2016 Net income $ 9,209 $ 4,504 $ 17,467 $ 4,755 Less: income allocated to participating securities (14) (12) (30) (25) Income allocated to common shareholders $ 9,195 $ 4,492 $ 17,437 $ 4,730 Weighted average shares outstanding for basic income per common share 26,955,187 29,215,822 26,878,904 29,666,570 Dilutive effect of equity awards 642,256 49,461 742,001 37,643 Dilutive effect of warrants — 13,476 16,627 3,166 Weighted average shares outstanding for diluted income per common share 27,597,443 29,278,759 27,637,532 29,707,379 Basic income per share $ 0.34 $ 0.15 $ 0.65 $ Diluted income per share $ 0.33 $ 0.15 $ 0.63 $

Derivatives - (Tables)

Derivatives - (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated statements of financial condition as of June 30, 2017 and December 31, 2016. Information about the valuation methods used to measure fair value is provided in note 16. Asset derivatives fair value Liability derivatives fair value Balance Sheet June 30, December 31, Balance Sheet June 30, December 31, location 2017 2016 location 2017 2016 Derivatives designated as hedging instruments: Interest rate products Other assets $ 8,310 $ 9,528 Other liabilities $ 2,268 $ 1,381 Total derivatives designated as hedging instruments $ 8,310 $ 9,528 $ 2,268 $ 1,381 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 2,384 $ 1,900 Other liabilities $ 2,461 $ 1,898 Interest rate lock commitments Other assets 143 149 Other liabilities — 6 Forward contracts Other assets 14 138 Other liabilities 26 20 Total derivatives not designated as hedging instruments $ 2,541 $ 2,187 $ 2,487 $ 2,085
Derivative Instruments, Gain (Loss)	The tables below present the effect of the Company’s derivative financial instruments on the consolidated statements of operations for the three and six months ended June 30, 2017 and 2016: Location of gain (loss) Amount of gain (loss) recognized in income on derivatives Derivatives in fair value recognized in income on For the three months ended June 30, For the six months ended June 30, hedging relationships derivatives 2017 2016 2017 2016 Interest rate products Other non-interest income $ (3,169) $ (6,513) $ (2,105) $ (17,414) Total $ (3,169) $ (6,513) $ (2,105) $ (17,414) Location of gain (loss) Amount of gain (loss) recognized in income on hedged items recognized in income on For the three months ended June 30, For the six months ended June 30, Hedged items hedged items 2017 2016 2017 2016 Interest rate products Other non-interest income $ 2,962 $ 6,051 $ 1,720 $ 16,281 Total $ 2,962 $ 6,051 $ 1,720 $ 16,281 Location of gain (loss) Amount of gain (loss) recognized in income on derivatives Derivatives not designated recognized in income on For the three months ended June 30, For the six months ended June 30, as hedging instruments derivatives 2017 2016 2017 2016 Interest rate products Other non-interest expense $ (47) $ (89) $ (79) $ (183) Interest rate lock commitments Gain on sale of mortgages, net (122) 332 1 332 Forward contracts Gain on sale of mortgages, net 63 (178) (131) (178) Total $ (106) $ 65 $ (209) $ (29)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Total Unfunded Commitments	Total unfunded commitments at June 30, 2017 and December 31, 2016 were as follows: June 30, 2017 December 31, 2016 Commitments to fund loans $ 181,052 $ 149,391 Unfunded commitments under lines of credit 467,180 452,851 Commercial and standby letters of credit 15,030 13,532 Total unfunded commitments $ 663,262 $ 615,774

Fair Value Measurements - (Tabl

Fair Value Measurements - (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Tables of Financial Instruments Measured At Fair Value on Recurring Basis	The tables below present the financial instruments measured at fair value on a recurring basis as of June 30, 2017 and December 31, 2016 on the consolidated statements of financial condition utilizing the hierarchy structure described above: June 30, 2017 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 195,341 $ — $ 195,341 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 668,631 — 668,631 Municipal securities — 2,058 — 2,058 Interest rate swap derivatives — 10,694 — 10,694 Mortgage banking derivatives — — 157 Total assets at fair value $ — $ 876,724 $ 157 $ 876,881 Liabilities: Interest rate swap derivatives $ — $ 4,729 $ — $ 4,729 Mortgage banking derivatives — — 26 Total liabilities at fair value $ — $ 4,729 $ 26 $ 4,755 December 31, 2016 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities (“MBS”): Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 227,160 $ — $ 227,160 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 652,739 — 652,739 Municipal securities — 3,648 — 3,648 Interest rate swap derivatives — 11,428 — 11,428 Mortgage banking derivatives — — 287 Total assets at fair value $ — $ 894,975 $ 287 $ 895,262 Liabilities: Interest rate swap derivatives $ — $ 3,279 $ — $ 3,279 Mortgage banking derivatives — — 26 Total liabilities at fair value $ — $ 3,279 $ 26 $ 3,305
Table of Changes in Level 3 Financial Instruments	The table below details the changes in level 3 financial instruments during the six months ended June 30, 2017 and June 30, 2016: Mortgage banking derivatives, net Balance at December 31, 2016 $ 261 Loss included in earnings, net (130) Balance at June 30, 2017 $
Table of assets recorded at fair value on a non-recurring basis	The table below provides information regarding the assets recorded at fair value on a non-recurring basis during the six months ended June 30, 2017 and 2016: June 30, 2017 Total Losses from fair value changes Other real estate owned $ 14,297 $ 46 Impaired loans 39,379 327 June 30, 2016 Total Losses from fair value changes Other real estate owned $ 23,242 $ 104 Impaired loans 46,815 4,019
Table of Valuation Techniques and Unobservable Inputs Used in Valuation of Financial Instruments Falling Within Level 3 of Fair Value Hierarchy	The below valuation utilizes third party appraisal or broker price opinions, and is classified as level 3 due to the significant judgment involved: Fair value at June 30, 2017 Valuation technique Unobservable input Qualitative measures Impaired loans 39,379 Appraised value Appraised values Discount rate 0% - 25%

Fair Value of Financial Instr37

Fair Value of Financial Instruments - (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	The fair value of financial instruments at June 30, 2017 and December 31, 2016, including methods and assumptions utilized for determining fair value of financial instruments, are set forth below: Level in fair value June 30, 2017 December 31, 2016 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 129,827 $ 129,827 $ 152,736 $ 152,736 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 195,341 195,341 227,160 227,160 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 668,631 668,631 652,739 652,739 Municipal securities Level 2 2,058 2,058 3,648 3,648 Municipal securities Level 3 265 265 265 265 Other available-for-sale securities Level 3 419 419 419 419 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 233,026 234,194 263,411 264,862 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 61,865 60,675 69,094 67,711 Non-marketable securities Level 2 18,468 18,468 14,949 14,949 Loans receivable Level 3 3,087,945 3,096,298 2,860,921 2,879,860 Loans held-for-sale Level 2 7,067 7,067 24,187 24,187 Accrued interest receivable Level 2 13,294 13,294 12,562 12,562 Interest rate swap derivatives Level 2 10,694 10,694 11,428 11,428 Mortgage banking derivatives Level 3 287 287 LIABILITIES Deposit transaction accounts Level 2 2,730,976 2,730,976 2,696,603 2,696,603 Time deposits Level 2 1,126,481 1,126,481 1,172,046 1,172,046 Securities sold under agreements to repurchase Level 2 119,213 119,213 92,011 92,011 Federal Home Loan Bank advances Level 2 129,115 130,642 38,665 39,324 Accrued interest payable Level 2 5,098 5,098 4,973 4,973 Interest rate swap derivatives Level 2 4,729 4,729 3,279 3,279 Mortgage banking derivatives Level 3 187 187

Basis of Presentation - (Detail

Basis of Presentation - (Details)	6 Months Ended
	Jun. 30, 2017item
Accounting Policies [Abstract]
Number of full service banking offices	86

Investment Securities - (Narrat

Investment Securities - (Narrative) (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017USD ($)security	Dec. 31, 2016USD ($)security
Investment securities total	$ 1,200,000	$ 1,200,000
Amortized cost	875,151	894,737
Available-for-sale securities	866,714	884,232
Held-to-maturity securities	$ 294,891	$ 332,505
Mortgage-backed securities as percentage of available-for-sale investment portfolio	100.00%	100.00%
Number of securities | security	63	61
Fair value of available-for-sale securities in an unrealized loss position	$ 583,210	$ 627,239
Fair value of available-for-sale security with OTTI	1,500
Other than Temporary Impairment Losses, Investments	200
Fair value of available-for-sale investment securities pledged as collateral	$ 296,400	$ 373,700
Estimated weighted average life of the available-for-sale mortgage-backed securities portfolio	3 years 1 month 6 days	3 years 4 months 24 days
Life of the available-for-sale mortgage-backed securities portfolio	2 years 10 months 24 days	3 years 2 months 12 days
Other securities having no contractual maturity date	$ 400
Number of held-to-maturity securities in unrealized loss positions | security	16	15
Fair value of held-to-maturity securities in an unrealized loss position	$ 78,617	$ 86,937
Held-to-maturity investment securities pledged as collateral	$ 139,800	$ 119,200
Estimated weighted average expected life of the held-to-maturity mortgage-backed securities portfolio	3 years 1 month 6 days	3 years 6 months
Life of the held-to-maturity investment portfolio	2 years 10 months 24 days	3 years 2 months 12 days
Municiapl securities maturing witin one year Member
Available-for-sale securities	$ 1,500
Municipal securities maturing within one to five years [Member]
Amortized cost	300
Available-for-sale securities	300
Municipal securities due within five to ten years [Member]
Amortized cost	600
Available-for-sale securities	600
Other Securities [Member]
Amortized cost	419	$ 419
Available-for-sale securities	$ 419	$ 419

Investment Securities - (Summar

Investment Securities - (Summary of Available-for-Sale Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 875,151	$ 894,737
Gross unrealized gains	5,080	6,033
Gross unrealized losses	(13,517)	(16,538)
Investment securities available-for-sale (at fair value)	866,714	884,232
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	192,369	223,781
Gross unrealized gains	3,476	3,909
Gross unrealized losses	(504)	(530)
Investment securities available-for-sale (at fair value)	195,341	227,160
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	680,040	666,616
Gross unrealized gains	1,604	2,124
Gross unrealized losses	(13,013)	(16,001)
Investment securities available-for-sale (at fair value)	668,631	652,739
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	2,323	3,921
Gross unrealized losses		(7)
Investment securities available-for-sale (at fair value)	2,323	3,914
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	419	419
Investment securities available-for-sale (at fair value)	$ 419	$ 419

Investment Securities - (Summ41

Investment Securities - (Summary of Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 228,367	$ 241,532
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,783)	(3,513)
12 months or more, Fair Value	354,843	385,707
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(10,734)	(13,025)
Total, Fair Value	583,210	627,239
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(13,517)	(16,538)
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	79,548	100,898
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(504)	(530)
Total, Fair Value	79,548	100,898
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(504)	(530)
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	148,819	137,576
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,279)	(2,976)
12 months or more, Fair Value	354,843	385,707
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(10,734)	(13,025)
Total, Fair Value	503,662	523,283
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (13,013)	(16,001)
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value		3,058
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(7)
Total, Fair Value		3,058
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (7)

Investment Securities - (Summ42

Investment Securities - (Summary of Held-to-maturity Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	$ 294,891	$ 332,505
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,343	1,701
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(1,365)	(1,633)
Fair value	294,869	332,573
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	233,026	263,411
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,332	1,685
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(164)	(234)
Fair value	234,194	264,862
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	61,865	69,094
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	11	16
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(1,201)	(1,399)
Fair value	$ 60,675	$ 67,711

Investment Securities - (Summ43

Investment Securities - (Summary of Held-to-Maturity Securities, Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Fair Value, Less than 12 months	$ 49,373	$ 54,791
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(470)	(591)
Fair Value, 12 months or more	29,244	32,146
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(895)	(1,042)
Total Fair Value	78,617	86,937
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,365)	(1,633)
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair Value, Less than 12 months	25,512	27,799
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(164)	(234)
Total Fair Value	25,512	27,799
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(164)	(234)
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Fair Value, Less than 12 months	23,861	26,992
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(306)	(357)
Fair Value, 12 months or more	29,244	32,146
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(895)	(1,042)
Total Fair Value	53,105	59,138
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (1,201)	$ (1,399)

Loans - Narrative Section (Deta

Loans - Narrative Section (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Fees and cost related to loans	$ 4,900		$ 4,900		$ 6,300
Carrying amount of loan investments	3,087,945	$ 2,738,504	3,087,945	$ 2,738,504	2,860,921
Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,775,454		1,775,454		1,560,430
Non Accrual [Member]
Debt Instrument [Line Items]
Recorded investment, non-accrual status	32,500		32,500
Increase (decrease) in non-accrual loans			$ 1,700
Percentage increase (decrease) in past due loans			5.70%
Non Accrual [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Decrease related to loans resolved and/or charged-off			$ 2,200
Non Accrual [Member] | Other
Debt Instrument [Line Items]
Increase (decrease) in non-accrual loans			(500)
Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,953,518		2,953,518		2,715,069
Allowance for Loan and Lease Losses, Write-offs	121	3,686	331	4,345
Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,739,476		1,739,476		1,521,150
ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	134,427		134,427		145,852
Allowance for Loan and Lease Losses, Write-offs		$ 41		$ 41
ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	35,978		35,978		39,280
Total Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	3,087,945		3,087,945		2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,953,518		2,953,518		2,715,069
Recorded investment, non-accrual status	32,455		32,455		30,717
Total past due loans	18,360		18,360		19,435
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,275,855		1,275,855		1,074,696
Recorded investment, non-accrual status	7,780		7,780		8,688
Total past due loans	5,021		5,021		8,221
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	98,293		98,293		90,273
Recorded investment, non-accrual status	12,050		12,050		12,645
Total past due loans	6,613		6,613		6,550
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,739,476		1,739,476		1,521,150
Recorded investment, non-accrual status	26,415		26,415		25,294
Total past due loans	13,523		13,523		16,127
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	233,930		233,930		221,544
Recorded investment, non-accrual status	4,377		4,377		2,056
Total past due loans	942		942		855
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	293,807		293,807		309,068
Recorded investment, non-accrual status	35		35		66
Total past due loans	135		135		28
Total Loans [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	134,427		134,427		145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	35,978		35,978		39,280
Total Loans [Member] | Substandard [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	77,529		77,529		116,558
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	40,712		40,712		56,924
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	15,472		15,472		25,636
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	5,998		5,998		7,811
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	30,340		30,340		45,490
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	6,196		6,196		10,137
Increase (decrease) in loan investments			1,400
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,234		1,234		2,251
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	36,817		36,817		59,634
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	7,074		7,074		11,234
Total Loans [Member] | Special Mention [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	49,530		49,530		38,590
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	45,624		45,624		35,669
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	13,978		13,978		7,243
Increase (decrease) in loan investments			(6,200)
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	41,253		41,253		25,536
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	4,607		4,607		9,371
Increase (decrease) in loan investments			5,500
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,566		1,566		5,895
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	3,906		3,906		2,921
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,105		1,105		610
Total Loans [Member] | Doubtful [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	9,111		9,111		9,113
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	9,111		9,111		5,345
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,767		2,767		491
Increase (decrease) in loan investments			2,100
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	6,052		6,052		4,843
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	9,098		9,098		5,334
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 245		$ 245
Total Loans [Member] | Doubtful [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments					$ 3,768

Loans - Impaired Loans Narrativ

Loans - Impaired Loans Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 3,087,945	$ 2,860,921	$ 2,738,504
Impaired loans	24,600
Recorded investment of impaired loans	39,379	38,282
Collective related allowance for loan losses for impaired loans	6,246	2,408
Non Accrual [Member]
Debt Instrument [Line Items]
Investment in impaired loans not covered by loan loss, non-accrual status	32,500
Fair Value Of Collateral Pledged [Member]
Debt Instrument [Line Items]
Impaired loans	29,000
Discounted Cash Flows [Member]
Debt Instrument [Line Items]
Impaired loans	2,500
General Reserve [Member]
Debt Instrument [Line Items]
Impaired loans	7,900
Individual loan amount of impaired loans	250
Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 1,775,454	$ 1,560,430

Loans - (Loan Portfolio Composi

Loans - (Loan Portfolio Composition Including Carrying Value by Segment of Loans Accounted for under ASC Topic 310-30) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Loans [Line Items]
Total Loans	$ 3,087,945	$ 2,860,921	$ 2,738,504
% of Total	100.00%	100.00%
Commercial Loan [Member]
Loans [Line Items]
Total Loans	$ 1,775,454	$ 1,560,430
% of Total	57.50%	54.60%
Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	$ 557,020	$ 526,792
% of Total	18.00%	18.40%
Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	$ 728,511	$ 744,885
% of Total	23.60%	26.00%
Consumer [Member]
Loans [Line Items]
Total Loans	$ 26,960	$ 28,814
% of Total	0.90%	1.00%
ASC 310-30 [Member]
Loans [Line Items]
Total Loans	$ 134,427	$ 145,852
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	35,978	39,280
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	83,785	89,150
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	14,012	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	652	898
Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,953,518	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,739,476	1,521,150
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	473,235	437,642
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	714,499	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	$ 26,308	$ 27,916

Loans - (Loan Delinquency) (Det

Loans - (Loan Delinquency) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Loans [Line Items]
Total loans	$ 3,087,945	$ 2,860,921	$ 2,738,504
Commercial Loan [Member]
Loans [Line Items]
Total loans	1,775,454	1,560,430
Commercial Real Estate [Member]
Loans [Line Items]
Total loans	557,020	526,792
Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	728,511	744,885
Consumer [Member]
Loans [Line Items]
Total loans	26,960	28,814
Non ASC 310-30 [Member]
Loans [Line Items]
Total loans	2,953,518	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	1,739,476	1,521,150
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	473,235	437,642
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	714,499	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	26,308	27,916
ASC 310-30 [Member]
Loans [Line Items]
Total loans	134,427	145,852
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	35,978	39,280
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	83,785	89,150
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	14,012	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	652	898
Total Loans [Member]
Loans [Line Items]
Total loans	3,087,945	2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	18,360	19,435
Current	2,935,158	2,695,634
Total loans	2,953,518	2,715,069
Loans 90 days past due and still accruing	215
Non- accrual	32,455	30,717
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total past due loans	215
Current	121,441	90,314
Total loans	121,656	90,314
Loans 90 days past due and still accruing	215
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total past due loans	334
Current	16,008	13,306
Total loans	16,342	13,306
Total Loans [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Current	41,430	24,954
Total loans	41,430	24,954
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	5,021	8,221
Current	1,270,834	1,066,475
Total loans	1,275,855	1,074,696
Non- accrual	7,780	8,688
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	942	855
Current	232,988	220,689
Total loans	233,930	221,544
Non- accrual	4,377	2,056
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	135	28
Current	293,672	309,040
Total loans	293,807	309,068
Non- accrual	35	66
Total Loans [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total past due loans	684	28
Current	472,551	437,614
Total loans	473,235	437,642
Loans 90 days past due and still accruing	215
Non- accrual	35	66
Total Loans [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	3,819	2,991
Current	658,403	672,699
Total loans	662,222	675,690
Non- accrual	5,286	4,522
Total Loans [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	240	198
Current	52,037	52,473
Total loans	52,277	52,671
Non- accrual	557	654
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	13,523	16,127
Current	1,725,953	1,505,023
Total loans	1,739,476	1,521,150
Non- accrual	26,415	25,294
Total Loans [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total past due loans	947	501
Current	130,451	134,136
Total loans	131,398	134,637
Non- accrual	2,208	1,905
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total past due loans	6,613	6,550
Current	91,680	83,723
Total loans	98,293	90,273
Non- accrual	12,050	12,645
Total Loans [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total past due loans	4,059	3,189
Current	710,440	725,172
Total loans	714,499	728,361
Non- accrual	5,843	5,176
Total Loans [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	94	91
Current	26,214	27,825
Total loans	26,308	27,916
Non- accrual	162	181
Total Loans [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total loans	134,427	145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	35,978	39,280
Total Loans [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	83,785	89,150
Total Loans [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	14,012	16,524
Total Loans [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	652	898
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	3,637	5,306
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total past due loans	334
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	658	3,134
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	890	583
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	135
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total past due loans	469
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	854	888
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	185	115
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	2,060	4,220
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total past due loans	512	501
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total past due loans		2
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total past due loans	1,039	1,003
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	69	83
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	1,961	4,939
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	228	4,009
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total past due loans		216
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	1,667	645
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	47	61
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	228	4,225
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total past due loans	1,714	706
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	19	8
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	12,762	9,190
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total past due loans	215
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	4,135	1,078
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	52	56
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total past due loans		28
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total past due loans	215	28
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	1,298	1,458
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	8	22
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	11,235	7,682
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total past due loans	435
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total past due loans	6,613	6,548
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total past due loans	1,306	$ 1,480
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	6
Non Accrual [Member]
Loans [Line Items]
Non- accrual	$ 32,500

Loans - (Credit Exposure for Lo

Loans - (Credit Exposure for Loans as Determined by Company's Internal Risk Rating System) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Loans [Line Items]
Total Loans	$ 3,087,945	$ 2,860,921	$ 2,738,504
Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,775,454	1,560,430
Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	728,511	744,885
Consumer [Member]
Loans [Line Items]
Total Loans	26,960	28,814
Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	557,020	526,792
Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,953,518	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,739,476	1,521,150
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	714,499	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,308	27,916
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	473,235	437,642
ASC 310-30 [Member]
Loans [Line Items]
Total Loans	134,427	145,852
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	35,978	39,280
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	14,012	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	652	898
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	83,785	89,150
Total Loans [Member]
Loans [Line Items]
Total Loans	3,087,945	2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,953,518	2,715,069
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	1,275,855	1,074,696
Total Loans [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	131,398	134,637
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	98,293	90,273
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,739,476	1,521,150
Total Loans [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	473,235	437,642
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total Loans	121,656	90,314
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	16,342	13,306
Total Loans [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans	41,430	24,954
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	233,930	221,544
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	293,807	309,068
Total Loans [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	714,499	728,361
Total Loans [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	662,222	675,690
Total Loans [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	52,277	52,671
Total Loans [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,308	27,916
Total Loans [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	134,427	145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	35,978	39,280
Total Loans [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	14,012	16,524
Total Loans [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	652	898
Total Loans [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	83,785	89,150
Total Loans [Member] | Pass [Member]
Loans [Line Items]
Total Loans	2,951,775	2,696,660
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,858,071	2,617,131
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	1,243,638	1,041,326
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	106,022	123,809
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	86,243	77,619
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,658,785	1,444,790
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	465,547	424,274
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total Loans	121,441	90,099
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	13,844	10,758
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans	39,255	22,495
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	222,882	202,036
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	291,007	300,922
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	707,653	720,398
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	656,249	669,148
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	51,404	51,250
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,086	27,669
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	93,704	79,529
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	27,799	27,436
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	11,234	12,477
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	464	721
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	54,207	38,895
Total Loans [Member] | Special Mention [Member]
Loans [Line Items]
Total Loans	49,530	38,590
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	45,624	35,669
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	13,978	7,243
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	22,668	8,922
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	41,253	25,536
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	4,064	8,681
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	2,498	2,548
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans		238
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	4,607	9,371
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	1,566	5,895
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	251	1,393
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	251	1,215
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans		178
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	56	59
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	3,906	2,921
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,105	610
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	1,088	1,327
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	12	17
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	1,701	967
Total Loans [Member] | Substandard [Member]
Loans [Line Items]
Total Loans	77,529	116,558
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	40,712	56,924
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	15,472	25,636
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	2,674	1,906
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	5,998	7,811
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	30,340	45,490
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	3,624	4,687
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total Loans	215	215
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans	2,175	2,221
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	6,196	10,137
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	1,234	2,251
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	6,582	6,559
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	5,709	5,316
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	873	1,243
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	166	188
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	36,817	59,634
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	7,074	11,234
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	1,690	2,720
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	176	160
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	27,877	45,520
Total Loans [Member] | Doubtful [Member]
Loans [Line Items]
Total Loans	9,111	9,113
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	9,111	5,345
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	2,767	491
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	34
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	6,052	4,843
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	9,098	5,334
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	245
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	13	11
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	$ 13	11
Total Loans [Member] | Doubtful [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans		3,768
Total Loans [Member] | Doubtful [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans		$ 3,768

Loans - (Additional Information

Loans - (Additional Information Regarding Impaired Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Loans [Line Items]
Unpaid principal balance, Total	$ 53,531	$ 56,787
Recorded Investment In Acquired Impaired Loans	39,379	38,282
Loans and Leases Receivable, Allowance	6,246	2,408
Commercial and Industrial [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	6,712	8,671
Recorded investment with no related allowance recorded	5,387	7,495
Unpaid principal balance of impaired loans with an allowance recorded	4,681	3,495
Recorded investment of impaired loans with an allowance recorded	4,642	3,464
Allowance for loan losses allocated with an allowance recorded	2,767	492
Agriculture [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	1,581	2,044
Recorded investment with no related allowance recorded	1,377	1,987
Unpaid principal balance of impaired loans with an allowance recorded	938
Recorded investment of impaired loans with an allowance recorded	911
Allowance for loan losses allocated with an allowance recorded	35
Energy Loans [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	16,548	17,142
Recorded investment with no related allowance recorded	5,437	6,105
Unpaid principal balance of impaired loans with an allowance recorded	6,613	11,216
Recorded investment of impaired loans with an allowance recorded	6,613	6,548
Allowance for loan losses allocated with an allowance recorded	3,148	1,866
Commercial Loan [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	28,795	31,207
Recorded investment with no related allowance recorded	15,956	18,784
Unpaid principal balance of impaired loans with an allowance recorded	14,817	15,668
Recorded investment of impaired loans with an allowance recorded	14,502	10,654
Allowance for loan losses allocated with an allowance recorded	6,198	2,360
Multifamily [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	31	33
Recorded investment with no related allowance recorded	31	33
Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	3,954	3,350
Recorded investment with no related allowance recorded	3,755	3,197
Unpaid principal balance of impaired loans with an allowance recorded	2,585	957
Recorded investment of impaired loans with an allowance recorded	2,336	642
Allowance for loan losses allocated with an allowance recorded	248	2
Non Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	357	394
Recorded investment with no related allowance recorded	306	343
Unpaid principal balance of impaired loans with an allowance recorded	220	261
Recorded investment of impaired loans with an allowance recorded	214	255
Allowance for loan losses allocated with an allowance recorded	1	1
Total Commercial Real Estate [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	388	427
Recorded investment with no related allowance recorded	337	376
Unpaid principal balance of impaired loans with an allowance recorded	220	261
Recorded investment of impaired loans with an allowance recorded	214	255
Allowance for loan losses allocated with an allowance recorded	1	1
Senior lien
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	345	1,551
Recorded investment with no related allowance recorded	328	1,426
Unpaid principal balance of impaired loans with an allowance recorded	7,162	5,646
Recorded investment of impaired loans with an allowance recorded	6,486	5,016
Allowance for loan losses allocated with an allowance recorded	36	31
Junior lien
Loans [Line Items]
Unpaid principal balance with no related allowance recorded		54
Recorded investment with no related allowance recorded		51
Unpaid principal balance of impaired loans with an allowance recorded	1,634	1,781
Recorded investment of impaired loans with an allowance recorded	1,391	1,532
Allowance for loan losses allocated with an allowance recorded	10	14
Residential Real Estate Segment [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	345	1,605
Recorded investment with no related allowance recorded	328	1,477
Unpaid principal balance of impaired loans with an allowance recorded	8,796	7,427
Recorded investment of impaired loans with an allowance recorded	7,877	6,548
Allowance for loan losses allocated with an allowance recorded	46	45
Consumer [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded		4
Recorded investment with no related allowance recorded		4
Unpaid principal balance of impaired loans with an allowance recorded	170	188
Recorded investment of impaired loans with an allowance recorded	165	184
Allowance for loan losses allocated with an allowance recorded	1	2
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	29,528	33,243
Recorded investment with no related allowance recorded	16,621	20,641
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Unpaid principal balance of impaired loans with an allowance recorded	24,003	23,544
Recorded investment of impaired loans with an allowance recorded	22,758	17,641
Allowance for loan losses allocated with an allowance recorded	$ 6,246	$ 2,408

Loans - (Impaired Loans - Avera

Loans - (Impaired Loans - Average Recorded Investment and Interest Income Recognized) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loans [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 41,073	$ 48,322	$ 41,863	$ 48,983
Impaired Financing Receivable, Interest Income, Cash Basis Method	95	155	211	317
Commercial and Industrial [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,645	4,279	7,030	4,564
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	25	70	73	138
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,643	4,144	4,630	4,312
Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,789	1,825	3,834	1,869
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	23	20	41	49
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,340	842	2,349	865
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	7	4	11	7
Agriculture [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,454	1,758	1,531	1,758
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	912	178	914	179
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	1	1	3	3
Energy Loans [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,680		5,889
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,624	25,975	6,602	26,005
Commercial Loan [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,568	7,862	18,284	8,191
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	48	90	114	187
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,519	31,139	14,495	31,361
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	8	5	14	10
Multifamily [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	31	35	31	36
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			1	1
Non Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	312		320
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	5		12
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	216	814	220	823
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	10	5	24
Total Commercial Real Estate [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	312		320
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	5		12
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	247	849	251	859
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	10	6	25
Senior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	330	1,296	334	1,312
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		8		14
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,525	5,149	6,583	5,212
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	20	28	40	53
Junior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		134		136
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method				1
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,403	1,652	1,421	1,670
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	12	14	25	27
Residential Real Estate Segment [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	330	1,430	334	1,448
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		8		15
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	7,928	6,801	8,004	6,882
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	32	42	65	80
Consumer [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	169	241	175	242
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	18,210	9,292	18,938	9,639
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	53	98	126	202
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	22,863	39,030	22,925	39,344
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	$ 42	$ 57	$ 85	$ 115

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring and Loans Accounted for Under ASC Topic 310-30 Narratives (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017USD ($)item	Jun. 30, 2017USD ($)loanitem	Jun. 30, 2016loan
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms | item		5
Troubled Debt Restructurings [Member]
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms	3		0
Number of restructured loans | item		5
Recorded investment	$ 6.8	$ 6.8
Energy Loans [Member]
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms | loan		1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 2.9
Commercial Loan [Member]
Debt Instrument [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 4.2

Loans - (Additional Informati52

Loans - (Additional Information Related to Accruing TDR's) (Details) - Accruing TDR [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Loans [Line Items]
Recorded investment	$ 5,177	$ 5,767
Average year-to- date recorded investment	5,235	6,017
Unpaid principal balance	5,470	6,030
Unfunded commitments to fund TDRs	102	102
Commercial [Member]
Loans [Line Items]
Recorded investment	3,258	3,302
Average year-to- date recorded investment	3,270	3,440
Unpaid principal balance	3,488	3,464
Unfunded commitments to fund TDRs	100	100
Commercial Real Estate [Member]
Loans [Line Items]
Recorded investment	491	538
Average year-to- date recorded investment	510	572
Unpaid principal balance	543	590
Residential Real Estate Segment [Member]
Loans [Line Items]
Recorded investment	1,424	1,920
Average year-to- date recorded investment	1,450	1,996
Unpaid principal balance	1,435	1,969
Unfunded commitments to fund TDRs	2	2
Consumer [Member]
Loans [Line Items]
Recorded investment	4	7
Average year-to- date recorded investment	5	9
Unpaid principal balance	$ 4	$ 7

Loans - (Summary of Company's C

Loans - (Summary of Company's Carrying Value of Non-Accrual TDR's) (Details) - Non-Accruing TDR [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 21,681	$ 16,708
Commercial [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	20,246	15,265
Residential Real Estate Segment [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	1,308	1,301
Consumer [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 127	$ 142

Loans - (Re-Measurement of Loan

Loans - (Re-Measurement of Loans Accounted for Under ASC Topic 310-30 Resulting in Changes in Carrying Amount of Accretable Yield) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield beginning balance	$ 60,476	$ 84,194
Reclassification from non-accretable difference	7,732	5,646
Reclassification to non-accretable difference	(494)	(4,019)
Accretion	(12,051)	(18,056)
Accretable yield ending balance	$ 55,663	$ 67,765

Loans - (Composition of Net Boo

Loans - (Composition of Net Book Value for Loans Accounted for under ASC Topic 310-30) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Contractual cash flows	$ 514,149	$ 537,611
Non-accretable difference	(324,059)	(331,283)
Accretable yield	(55,663)	(60,476)
Loans accounted for under ASC 310-30	$ 134,427	$ 145,852

Allowance for Loan Losses - (Su

Allowance for Loan Losses - (Summary of Company's Allowance for Loan Losses ("All") and Recorded Investment in Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 30,850	$ 37,166	$ 29,174	$ 27,119
Provision (recoupment) for loan losses			5,820	17,076
Ending balance	34,959	40,106	34,959	40,106
Carrying amount of loan investments					$ 3,087,945	$ 2,860,921	$ 2,738,504
Loans	30,850	37,166	29,174	27,119	34,959	29,174	40,106
Total Loans					3,087,945	2,860,921	2,738,504
Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		169,282		169,282
Loans		169,282		169,282			169,282
Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	30,630	36,951	28,949	26,042
Charge-offs	(121)	(3,686)	(331)	(4,345)
Recoveries	205	210	296	297
Provision (recoupment) for loan losses	4,103	6,400	5,903	17,881
Ending balance	34,817	39,875	34,817	39,875
Ending allowance balance individually evaluated for impairment					39,379		14,977
Ending allowance balance collectively evaluated for impairment							2,523,506
Loans individually evaluated for impairment							231
Loans collectively evaluated for impairment							40,106
Carrying amount of loan investments					2,953,518	2,715,069
Loans	30,630	36,951	28,949	26,042	34,817	28,949	39,875
Total Loans					2,953,518	2,715,069
Non ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					6,244
Ending allowance balance collectively evaluated for impairment					28,573
Loans collectively evaluated for impairment					2,914,139
Carrying amount of loan investments					134,427
Total Loans					134,427
ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	220	215	225	1,077
Charge-offs		(41)		(41)
Provision (recoupment) for loan losses	(78)	57	(83)	(805)
Ending balance	142	231	142	231
Loans individually evaluated for impairment					142
Carrying amount of loan investments					134,427	145,852
Loans	220	215	225	1,077	142	225	231
Total Loans					134,427	145,852
ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		24,898		24,898
Carrying amount of loan investments							45,716
Loans		24,898		24,898			24,898
Total Loans							45,716
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	20,539	28,684	18,821	17,261
Ending balance	24,656	29,982	24,656	29,982
Carrying amount of loan investments					1,775,454		1,490,749
Loans	20,539	28,684	18,821	17,261	24,656	18,821	29,982
Total Loans					1,775,454		1,490,749
Commercial Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		46,875		46,875
Loans		46,875		46,875			46,875
Commercial Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	20,539	28,610	18,821	16,473
Charge-offs		(3,375)	(20)	(3,484)
Recoveries	30	12	41	24
Provision (recoupment) for loan losses	4,087	4,733	5,814	16,967
Ending balance	24,656	29,980	24,656	29,980
Ending allowance balance individually evaluated for impairment					30,458		14,933
Ending allowance balance collectively evaluated for impairment							1,406,609
Loans individually evaluated for impairment							2
Loans collectively evaluated for impairment							29,982
Loans	20,539	28,610	18,821	16,473	24,656	18,821	29,980
Commercial Portfolio Segment [Member] | Non ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					6,197
Ending allowance balance collectively evaluated for impairment					18,459
Loans collectively evaluated for impairment					1,709,018
Carrying amount of loan investments					35,978
Total Loans					35,978
Commercial Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		74		788
Provision (recoupment) for loan losses		(72)		(786)
Ending balance		2		2
Loans		74		788			2
Commercial Portfolio Segment [Member] | ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		15,047		15,047
Carrying amount of loan investments							37,265
Loans		15,047		15,047			15,047
Total Loans							37,265
Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,216	4,325	4,387	5,281
Ending balance	4,067	4,504	4,067	4,504
Carrying amount of loan investments					728,511		694,171
Loans	4,216	4,325	4,387	5,281	4,067	4,387	4,504
Total Loans					728,511		694,171
Residential Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		19,341		19,341
Loans		19,341		19,341			19,341
Residential Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,216	4,289	4,387	5,245
Charge-offs	(2)	(140)	(10)	(197)
Recoveries	110	16	113	23
Provision (recoupment) for loan losses	(257)	339	(423)	(567)
Ending balance	4,067	4,504	4,067	4,504
Ending allowance balance individually evaluated for impairment					8,205		39
Ending allowance balance collectively evaluated for impairment							667,461
Loans collectively evaluated for impairment							4,504
Loans	4,216	4,289	4,387	5,245	4,067	4,387	4,504
Residential Portfolio Segment [Member] | Non ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					45
Ending allowance balance collectively evaluated for impairment					4,022
Loans collectively evaluated for impairment					706,294
Carrying amount of loan investments					14,012
Total Loans					14,012
Residential Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		36		36
Provision (recoupment) for loan losses		(36)		(36)
Loans		36		36
Residential Portfolio Segment [Member] | ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		4,465		4,465
Carrying amount of loan investments							7,369
Loans		4,465		4,465			4,465
Total Loans							7,369
Consumer Loan [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	280	296	324	411
Ending balance	302	252	302	252
Carrying amount of loan investments					26,960		27,845
Loans	280	296	324	411	302	324	252
Total Loans					26,960		27,845
Consumer Loan [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		1,347		1,347
Loans		1,347		1,347			1,347
Consumer Loan [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	276	249	319	385
Charge-offs	(119)	(171)	(301)	(388)
Recoveries	55	126	122	185
Provision (recoupment) for loan losses	82	30	154	52
Ending balance	294	234	294	234
Ending allowance balance individually evaluated for impairment					165		2
Ending allowance balance collectively evaluated for impairment							26,258
Loans individually evaluated for impairment							18
Loans collectively evaluated for impairment							252
Loans	276	249	319	385	294	319	234
Consumer Loan [Member] | Non ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					1
Ending allowance balance collectively evaluated for impairment					293
Loans collectively evaluated for impairment					26,143
Carrying amount of loan investments					652
Total Loans					652
Consumer Loan [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4	47	5	26
Provision (recoupment) for loan losses	4	(29)	3	(8)
Ending balance	8	18	8	18
Loans individually evaluated for impairment					8
Loans	4	47	5	26	8	5	18
Consumer Loan [Member] | ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		232		232
Carrying amount of loan investments							240
Loans		232		232			232
Total Loans							240
Commercial Real Estate Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,815	3,861	5,642	4,166
Ending balance	5,934	5,368	5,934	5,368
Carrying amount of loan investments					557,020		525,739
Loans	5,815	3,861	5,642	4,166	5,934	5,642	5,368
Total Loans					557,020		525,739
Commercial Real Estate Portfolio Segment [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		101,719		101,719
Loans		101,719		101,719			101,719
Commercial Real Estate Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,599	3,803	5,422	3,939
Charge-offs				(276)
Recoveries	10	56	20	65
Provision (recoupment) for loan losses	191	1,298	358	1,429
Ending balance	5,800	5,157	5,800	5,157
Ending allowance balance individually evaluated for impairment					551		3
Ending allowance balance collectively evaluated for impairment							423,178
Loans individually evaluated for impairment							211
Loans collectively evaluated for impairment							5,368
Loans	5,599	3,803	5,422	3,939	5,800	5,422	5,157
Commercial Real Estate Portfolio Segment [Member] | Non ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					1
Ending allowance balance collectively evaluated for impairment					5,799
Loans collectively evaluated for impairment					472,684
Carrying amount of loan investments					83,785
Total Loans					83,785
Commercial Real Estate Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	216	58	220	227
Charge-offs		(41)		(41)
Provision (recoupment) for loan losses	(82)	194	(86)	25
Ending balance	134	211	134	211
Loans individually evaluated for impairment					134
Loans	$ 216	58	$ 220	227	$ 134	$ 220	211
Commercial Real Estate Portfolio Segment [Member] | ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		5,154		5,154
Carrying amount of loan investments							842
Loans		$ 5,154		$ 5,154			5,154
Total Loans							$ 842

Allowance for Loan Losses - (Na

Allowance for Loan Losses - (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses					$ 5,820	$ 17,076
Impaired loans	$ 24,600				24,600
Energy Loans [Member]
Allowance For Loan And Lease Losses [Line Items]
Specific Reserve in Provision				$ 4,300		15,100
Commercial and Industrial [Member]
Allowance For Loan And Lease Losses [Line Items]
Specific Reserve in Provision		$ 2,100			3,400
Non ASC 310-30 [Member]
Allowance For Loan And Lease Losses [Line Items]
Charge-offs, net	100		$ 3,500		0	4,000
Provision (recoupment) for loan losses	4,103		6,400		5,903	17,881
ASC 310-30 [Member]
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses	$ (78)		$ 57		$ (83)	$ (805)

Other Real Estate Owned - (Summ

Other Real Estate Owned - (Summary of Activity in OREO Balances) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Other Real Estate [Roll Forward]
Balance	$ 15,662	$ 20,814
Transfers from loan portfolio, at fair value	639	3,654
Impairments	(46)	(104)
Proceeds From Sale Of Other Real Estate Owned, Net	(1,958)	(1,122)
Balance	$ 14,297	$ 23,242

Other Real Estate Owned - (Narr

Other Real Estate Owned - (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
FDIC Loss-Sharing Related
Minority interests in OREO which are held by outside banks					$ 1,600
Gain on sale of OREO, net	$ 1,644	$ 1,611	$ 1,756	$ 2,043

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 4,200		$ 4,200		$ 7,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Earliest	2,018		2,018
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Last	2,020		2,020
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 763,600		$ 763,600
FHLB advances	129,100		129,100		25,000
Interest expense related to FHLB advances	$ 496	$ 166	$ 693	$ 332
Minimum
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate range of FHLB advances	1.31%		1.31%
Maximum
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate range of FHLB advances	2.33%		2.33%
U.S. Treasury Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 123,400		$ 123,400		$ 99,100

Regulatory Capital - (Capital R

Regulatory Capital - (Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage Ratio	10.30%	10.40%
Common equity risk-based ratio	13.30%	14.20%
Risk-based capital Ratio	13.30%	14.20%
Total risk-based capital Ratio	14.30%	15.00%
Leverage Amount	$ 472,627	$ 470,259
Common equity risk-based amount	472,627	470,259
Risk-based capital amount	472,627	470,259
Total risk-based capital Amount	$ 507,912	$ 499,759
Required to be considered adequately capitalized Ratio, leverage ratio	4.00%	4.00%
Required to be considered adequately capitalized Ratio, risk-based common equity capital ratio	4.50%	4.50%
Required to be considered adequately capitalized Ratio, risk-based capital ratio	6.00%	6.00%
Required to be considered adequately capitalized Ratio, Total risk-based capital ratio	8.00%	8.00%
Required to be considered adequately capitalized leverage Amount	$ 184,402	$ 181,019
Required to be considered adequately capitalized common equity capital amount	207,452	203,647
Required to be considered adequately capitalized risk-based capital Amount	213,366	199,467
Required to be considered adequately capitalized Total risk-based capital Amount	$ 284,488	$ 265,955
NBH Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage Ratio	8.40%	8.60%
Common equity risk-based ratio	10.90%	11.80%
Risk-based capital Ratio	10.90%	11.80%
Total risk-based capital Ratio	11.90%	12.70%
Leverage Amount	$ 385,466	$ 389,189
Common equity risk-based amount	385,466	389,189
Risk-based capital amount	385,466	389,189
Total risk-based capital Amount	$ 420,750	$ 418,689
Required to be considered well capitalized Ratio, leverage ratio	4.50%	4.50%
Required to be considered adequately capitalized Ratio, risk-based common equity capital ratio	6.50%	6.50%
Required to be considered well capitalized Ratio, risk-based capital ratio	8.00%	8.00%
Required to be considered well capitalized Ratio, Total risk-based capital ratio	10.00%	10.00%
Required to be considered well capitalized leverage Amount	$ 206,721	$ 202,903
Required to be considered well capitalized common equity capital amount	298,597	293,082
Required to be considered well capitalized risk-based capital Amount	283,313	264,596
Required to be considered well capitalized Total risk-based capital Amount	$ 354,141	$ 330,745
Required to be considered adequately capitalized Ratio, leverage ratio	4.00%	4.00%
Required to be considered adequately capitalized Ratio, risk-based common equity capital ratio	4.50%	4.50%
Required to be considered adequately capitalized Ratio, risk-based capital ratio	6.00%	6.00%
Required to be considered adequately capitalized Ratio, Total risk-based capital ratio	8.00%	8.00%
Required to be considered adequately capitalized leverage Amount	$ 183,752	$ 180,358
Required to be considered adequately capitalized common equity capital amount	206,721	202,903
Required to be considered adequately capitalized risk-based capital Amount	212,485	198,447
Required to be considered adequately capitalized Total risk-based capital Amount	$ 283,313	$ 264,596

Stock-based Compensation and Em

Stock-based Compensation and Employee Benefits - (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 200,000	$ 200,000		$ 400,000
Unrecognized compensation expense	800,000		$ 800,000
Unrecognized compensation cost, weighted-average period, years			2 years 4 months 24 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)			65,990
Weighted average grant-date fair value, Granted (in dollars per share)			$ 33.43
Stock based compensation expense	800,000	$ 700,000	$ 1,400,000
Market-based stock awards | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)			26,594
Share-based Compensation Arrangement by Share-based Payment Award, Award Performance Period			5 years
Weighted average grant-date fair value, Granted (in dollars per share)			$ 11.28
Unrecognized compensation expense	300,000		$ 300,000
Unrecognized compensation cost, weighted-average period, years			1 year 10 months 24 days
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)			49,758
Weighted average grant-date fair value, Granted (in dollars per share)			$ 33.22
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)			49,758	91,342
Unrecognized compensation expense	$ 4,500,000		$ 4,500,000
Unrecognized compensation cost, weighted-average period, years			2 years 1 month 6 days
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] | EPS target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards based on performance type			60.00%
Weighted average grant-date fair value, Granted (in dollars per share)			$ 34.04
Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] | TSR target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards based on performance type			40.00%
Weighted average grant-date fair value, Granted (in dollars per share)			$ 32.06
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	400,000		400,000
Maximum stock purchases by employees, value			$ 25,000
Maximum stock purchases by employees (in shares)			2,000
Discount on purchase of common stock (as a percent)			90.00%
Offering period for employee stock purchases			6 months
Employees purchased shares under the ESPP (in shares)			5,373
Shares available for issuance	360,963		360,963
Minimum | Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Share Based Compensation Arrangement By Share Based Payment Award Options Granted Contractual Term			7 years
Minimum | Restricted Stock [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Minimum | Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of initial target awards			0.00%
Maximum | Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Share Based Compensation Arrangement By Share Based Payment Award Options Granted Contractual Term			10 years
Maximum | Restricted Stock [Member] | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Maximum | Performance stock units | NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of initial target awards			150.00%

Stock-based Compensation and 63

Stock-based Compensation and Benefits - (Summary of Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Options, beginning	2,185,922
Granted, Options	99,920
Forfeited, Options	(16,225)
Exercised, Options	(585,750)
Outstanding Options, ending	1,683,867	2,185,922
Options fully vested and exercisable at end of period, Options	1,429,584
Options expected to vest, Options	1,662,690
Outstanding, Weighted average exercise price, beginning	$ 19.81
Granted, Weighted average exercise price	33.98
Forfeited, Weighted average exercise price	21.84
Exercised, Weighted average exercise price	19.93
Outstanding, Weighted average exercised price, ending	20.61	$ 19.81
Options fully vested and exercisable at end of period, Weighted average exercise price	19.80
Options expected to vest, Weighted average exercise price	$ 20.53
Outstanding, Weighted average remaining contractual term in years	4 years 6 months 7 days	4 years 10 months 6 days
Options fully vested and exercisable at end of period, weighted average remaining contractual term in years	3 years 9 months 7 days
Options expected to vest, Weighted average remaining contractual term in years	4 years 5 months 16 days
Outstanding, Aggregate intrinsic value, beginning	$ 7,753
Outstanding, Outstanding, Aggregate intrinsic value, beginning	21,136	$ 7,753
Aggregate intrinsic Value of Options fully vested and exercisable at end of period	19,021
Options expected to vest, Aggregate Intrinsic Value	$ 20,994

Stock-based Compensation and 64

Stock-based Compensation and Benefits - (Summary of Restricted Stock Activity) (Details)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested Restricted shares, Beginning (in shares) | shares	499,271
Unvested Restricted shares, Vested (in shares) | shares	(298,086)
Unvested Restricted shares, Granted (in shares) | shares	65,990
Unvested Restricted shares, Forfeited (in shares) | shares	(11,111)
Unvested Restricted shares, Ending (in shares) | shares	256,064
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted average grant-date fair value, Beginning (in dollars per share) | $ / shares	$ 15.82
Weighted average grant-date fair value, Vested (in dollars per share) | $ / shares	15.27
Weighted average grant-date fair value, Granted (in dollars per share) | $ / shares	33.43
Weighted average grant-date fair value, Forfeited (in dollars per share) | $ / shares	22.23
Weighted average grant-date fair value, Ending (in dollars per share) | $ / shares	$ 20.82
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested Restricted shares, Beginning (in shares) | shares	85,295
Unvested Restricted shares, Granted (in shares) | shares	49,758
Unvested Restricted shares, Forfeited (in shares) | shares	(5,994)
Unvested Restricted shares, Ending (in shares) | shares	129,059
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted average grant-date fair value, Beginning (in dollars per share) | $ / shares	$ 18.22
Weighted average grant-date fair value, Granted (in dollars per share) | $ / shares	33.22
Weighted average grant-date fair value, Forfeited (in dollars per share) | $ / shares	20.90
Weighted average grant-date fair value, Ending (in dollars per share) | $ / shares	$ 23.88

Warrants (Narrative) (Details)

Warrants (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016
Warrants and Rights Note Disclosure [Abstract]
Warrants granted, exercise price per share		$ 20	$ 20	$ 20	$ 20
Warrants settled or exercised	250,750

Common Stock - (Narrative) (Det

Common Stock - (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Aug. 05, 2016
Schedule Of Common Stock [Line Items]
Shares repurchased (shares)		1,671,923
Repurchase of shares		$ 32,918
Remaining authorized amount	$ 12,600
Shares outstanding	26,788,833		26,386,583
Common Class A [Member]
Schedule Of Common Stock [Line Items]
Shares outstanding	26,788,833		26,386,583
Restricted issued but not yet vested, shares	256,064		499,271
New Board Authorized Share Repurchase Program
Schedule Of Common Stock [Line Items]
Stock repurchase program, authorized amount				$ 50,000

Income Per Share - (Narrative)

Income Per Share - (Narrative) (Details) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Mar. 31, 2016
Shares outstanding	28,810,883	26,788,833	28,810,883
Outstanding stock options to purchase common stock	2,703,752	1,683,867	2,703,752	2,185,922
Outstanding stock options to purchase common stock, per share	$ 19.82	$ 20.61	$ 19.82	$ 19.81
Warrants granted, exercise price per share	$ 20	$ 20	$ 20	$ 20	$ 20
Restricted shares outstanding		256,064	918,890
Warrant [Member]
Dilutive Convertible Securities	13,476	16,627	3,166

Income Per Share - (Schedule of

Income Per Share - (Schedule of Computation of Basic and Diluted Income Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 9,209	$ 4,504	$ 17,467	$ 4,755
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(14)	(12)	(30)	(25)
Income available to common stockholders (numerator)	$ 9,195	$ 4,492	$ 17,437	$ 4,730
Weighted average common shares outstanding (denominator)	26,955,187	29,215,822	26,878,904	29,666,570
Weighted average shares outstanding for diluted earnings per common share	27,597,443	29,278,759	27,637,532	29,707,379
Income per share-basic (in dollars per share)	$ 0.34	$ 0.15	$ 0.65	$ 0.16
Income per share-diluted (in dollars per share)	$ 0.33	$ 0.15	$ 0.63	$ 0.16
Equity Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Convertible Securities	642,256	49,461	742,001	37,643
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Convertible Securities		13,476	16,627	3,166

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax rate	19.10%		17.90%	5.10%	19.80%
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options		$ 0.5		$ 3.4

Derivatives - (FV of Derivative

Derivatives - (FV of Derivatives on the Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	$ 8,310	$ 9,528
Liability derivatives fair value	2,268	1,381
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,541	2,187
Liability derivatives fair value	2,487	2,085
Other assets [Member] | Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	8,310	9,528
Liability derivatives fair value	2,268	1,381
Other assets [Member] | Interest rate products [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,384	1,900
Liability derivatives fair value	2,461	1,898
Other assets [Member] | Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	143	149
Liability derivatives fair value		6
Other assets [Member] | Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	14	138
Liability derivatives fair value	$ 26	$ 20

Derivatives - (Narrative) (Deta

Derivatives - (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)item	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)item	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)item
Derivative [Line Items]
Number of interest rate lock commitments | item					78
Number of forward contracts | item			9
Notional amount	$ 10,000		$ 10,000
Gain (loss) related to hedge ineffectiveness	207	$ (462)	385	$ (1,100)
Termination value of derivatives in net liability position	1,100		1,100		$ 1,300
Collateral Already Posted, Aggregate Fair Value	2,800		$ 2,800		800
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Notional amount					13,800
Number OF Interest Rate Loack Commitments Member
Derivative [Line Items]
Number of interest rate lock commitments | item			59
Interest Rate Lock Commitments Notional Amount Member
Derivative [Line Items]
Notional amount	$ 12,400		$ 12,400
Forward Contract Notional [Member]
Derivative [Line Items]
Notional amount					$ 11,800
Designated as Hedging Instrument [Member] | Interest rate swap derivatives [Member]
Derivative [Line Items]
Number of interest rate swaps held | item	52		52		42
Notional amount	$ 372,100		$ 372,100		$ 313,000
Not Designated as Hedging Instrument [Member] | Interest rate swap derivatives [Member]
Derivative [Line Items]
Number of interest rate swaps held | item	39		39		36
Notional amount	$ 161,300		$ 161,300		$ 132,600

Derivatives - (Derivatives on t

Derivatives - (Derivatives on the Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	$ (106)	$ 65	$ (209)	$ (29)
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	(3,169)	(6,513)	(2,105)	(17,414)
Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on hedged items	2,962	6,051	1,720	16,281
Interest rate products [Member] | Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on hedged items	2,962	6,051	1,720	16,281
Interest rate products [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	(47)	(89)	(79)	(183)
Interest rate products [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	(3,169)	(6,513)	(2,105)	(17,414)
Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	63	(178)	(131)	(178)
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	$ (122)	$ 332	$ 1	$ 332

Commitments and Contingencies73

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Commitment And Contingencies [Line Items]
Loan commitments	$ 648.2	$ 602.2
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Standby letters of credit	$ 15	$ 13.5

Commitments and Contingencies74

Commitments and Contingencies (Schedule of Total Unfunded Commitments) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 663,262	$ 615,774
Commitments to fund loans [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	181,052	149,391
Unfunded Commitment Line Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	467,180	452,851
Commercial And Standby Letters Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 15,030	$ 13,532

Fair Value Measurements - (Ta75

Fair Value Measurements - (Tables of Financial Instruments Measured At Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	$ 876,881	$ 895,262
Total liabilities at fair value	4,755	3,305
Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,058	3,648
Mortgage-Backed Securities (MBS) [Member] | Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	195,341	227,160
Mortgage-Backed Securities (MBS) [Member] | Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	668,631	652,739
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	876,724	894,975
Total liabilities at fair value	4,729	3,279
Level 2 [Member] | Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,058	3,648
Level 2 [Member] | Mortgage-Backed Securities (MBS) [Member] | Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	195,341	227,160
Level 2 [Member] | Mortgage-Backed Securities (MBS) [Member] | Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	668,631	652,739
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	157	287
Total liabilities at fair value	26	26
Interest rate swap derivatives [Member] | Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	10,694	11,428
Total liabilities at fair value	4,729	3,279
Interest rate swap derivatives [Member] | Level 2 [Member] | Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	10,694	11,428
Total liabilities at fair value	4,729	$ 3,279
Mortgage banking derivatives | Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	157
Total liabilities at fair value	26
Mortgage banking derivatives | Level 3 [Member] | Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	157
Total liabilities at fair value	$ 26

Fair Value Measurements - (Ta76

Fair Value Measurements - (Table of Changes in Level 3 Financial Instruments) (Details) - Derivative Financial Instruments Assets and Liabilities [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 261
Realized gain (loss) included in earnings—net mortgage banking derivatives	(130)
Ending Balance	$ 131

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of Loans measured | loan	7
Nonrecurring Loans Carrying value	$ 14,500
Nonrecurring Loans Reserves	6,200	$ 14,900
Impairment on other real estate owned	$ 46	$ 104
Additions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of Loans measured | loan	6

Fair Value Measurements - (Inpu

Fair Value Measurements - (Inputs Used to Determine Fair Values of Oreo are Considered Level 3 Inputs in Fair Value Hierarchy) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on a non-recurring basis	$ 14,297	$ 23,242
Losses From Fair Value Changes	(46)	104
Impaired loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on a non-recurring basis	39,379	46,815
Losses From Fair Value Changes	$ (327)	$ 4,019

Fair Value Measurements - (Ta79

Fair Value Measurements - (Table of Valuation Techniques and Unobservable Inputs Used in Valuation of Financial Instruments Falling Within Level 3 of Fair Value Hierarchy) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets at fair value	$ 876,881	$ 895,262
Impaired loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets at fair value	$ 39,379
Minimum | Appraised value [Member] | Impaired loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Appraised values Discount rate	0.00%
Maximum | Appraised value [Member] | Impaired loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Appraised values Discount rate	25.00%

Fair Value of Financial Instr80

Fair Value of Financial Instruments - (Schedule of Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
ASSETS:
Cash and cash equivalents	$ 129,827	$ 152,736	$ 147,939	$ 166,092
Investment securities available-for-sale (at fair value)	866,714	884,232
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	294,891	332,505
Non-marketable securities	18,468	14,949
Loans held-for-sale	7,067	24,187
LIABILITIES:
Time deposits	1,126,481	1,172,046
Securities sold under agreements to repurchase	119,213	92,011
Federal Home Loan Bank advances	129,115	38,665
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	195,341	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	233,026	263,411
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	668,631	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	61,865	69,094
Other Securities [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	419	419
Municipal [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	2,323	3,914
Carrying Amount [Member] | Level 1 [Member]
ASSETS:
Cash and cash equivalents	129,827	152,736
Carrying Amount [Member] | Level 2 [Member]
ASSETS:
Non-marketable securities	18,468	14,949
Loans held-for-sale	7,067	24,187
Accrued interest receivable	13,294	12,562
LIABILITIES:
Deposit transaction accounts	2,730,976	2,696,603
Time deposits	1,126,481	1,172,046
Securities sold under agreements to repurchase	119,213	92,011
Federal Home Loan Bank advances	129,115	38,665
Accrued interest payable	5,098	4,973
Carrying Amount [Member] | Level 3 [Member]
ASSETS:
Loans receivable, net	3,087,945	2,860,921
Carrying Amount [Member] | Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] | Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	195,341	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	233,026	263,411
Carrying Amount [Member] | Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] | Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	668,631	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	61,865	69,094
Carrying Amount [Member] | Other Securities [Member] | Level 3 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	419	419
Carrying Amount [Member] | Municipal [Member] | Level 2 [Member]
ASSETS:
Municipal obligations	2,058	3,648
Carrying Amount [Member] | Municipal [Member] | Level 3 [Member]
ASSETS:
Municipal obligations	265	265
Estimated Fair Value [Member] | Level 1 [Member]
ASSETS:
Cash and cash equivalents	129,827	152,736
Estimated Fair Value [Member] | Level 2 [Member]
ASSETS:
Non-marketable securities	18,468	14,949
Loans held-for-sale	7,067	24,187
Accrued interest receivable	13,294	12,562
LIABILITIES:
Deposit transaction accounts	2,730,976	2,696,603
Time deposits	1,126,481	1,172,046
Securities sold under agreements to repurchase	119,213	92,011
Federal Home Loan Bank advances	130,642	39,324
Accrued interest payable	5,098	4,973
Estimated Fair Value [Member] | Level 3 [Member]
ASSETS:
Loans receivable, net	3,096,298	2,879,860
Estimated Fair Value [Member] | Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] | Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	195,341	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	234,194	264,862
Estimated Fair Value [Member] | Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] | Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	668,631	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	60,675	67,711
Estimated Fair Value [Member] | Other Securities [Member] | Level 3 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	419	419
Estimated Fair Value [Member] | Municipal [Member] | Level 2 [Member]
ASSETS:
Municipal obligations	2,058	3,648
Estimated Fair Value [Member] | Municipal [Member] | Level 3 [Member]
ASSETS:
Municipal obligations	265	265
Interest rate swap derivatives [Member] | Carrying Amount [Member] | Level 2 [Member]
ASSETS:
Derivative asset	10,694	11,428
LIABILITIES:
Derivative liability	4,729	3,279
Interest rate swap derivatives [Member] | Estimated Fair Value [Member] | Level 2 [Member]
ASSETS:
Derivative asset	10,694	11,428
LIABILITIES:
Derivative liability	4,729	3,279
Mortgage banking derivatives | Carrying Amount [Member] | Level 3 [Member]
ASSETS:
Derivative asset	157	287
LIABILITIES:
Derivative liability	26	187
Mortgage banking derivatives | Estimated Fair Value [Member] | Level 3 [Member]
ASSETS:
Derivative asset	157	287
LIABILITIES:
Derivative liability	$ 26	$ 187

Fair Value of Financial Instr81

Fair Value of Financial Instruments - (Additional Information) (Details)	6 Months Ended
	Jun. 30, 2017
Fair Value Of Financial Instruments [Abstract]
Residential mortgage loans held for sale period	45 days