National Bank (NBHC) 10-Q 8 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 04, 2017
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
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		26,782,074
Entity Current Reporting Status	Yes

Consolidated Statements of Fina

Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 218,430	$ 152,736
Investment securities available-for-sale (at fair value)	921,881	884,232
Investment securities held-to-maturity (at amortized cost)	313,446	332,505
Non-marketable securities	13,065	14,949
Loans	2,953,655	2,860,921
Allowance for loan losses	(30,850)	(29,174)
Loans, net	2,922,805	2,831,747
Loans held for sale	3,547	24,187
Other real estate owned	15,552	15,662
Premises and equipment, net	94,485	95,671
Goodwill	59,630	59,630
Intangible assets, net	5,580	6,949
Other assets	159,874	154,778
Total assets	4,728,295	4,573,046
Liabilities:
Non-interest bearing demand deposits	876,933	846,744
Interest bearing demand deposits	428,174	427,538
Savings and money market	1,477,842	1,422,321
Time deposits	1,184,994	1,172,046
Total deposits	3,967,943	3,868,649
Securities sold under agreements to repurchase	91,697	92,011
Federal Home Loan Bank advances	76,780	38,665
Other liabilities	54,257	37,532
Total liabilities	4,190,677	4,036,857
Shareholders' equity:
Common stock	514	514
Additional paid in capital	971,742	984,087
Retained earnings	61,812	55,454
Treasury stock at cost	(494,594)	(502,104)
Accumulated other comprehensive income (loss), net of tax	(1,856)	(1,762)
Total shareholders' equity	537,618	536,189
Total liabilities and shareholders' equity	$ 4,728,295	$ 4,573,046

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Investment securities held-to-maturity, fair value	$ 313,270	$ 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	51,623,582	51,813,011
Common Stock, shares outstanding	26,715,532	26,386,583
Treasury stock, shares	24,551,643	24,927,157

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest and dividend income:
Interest and fees on loans	$ 31,763	$ 32,956
Interest and dividends on investment securities	6,613	8,235
Dividends on non-marketable securities	167	228
Interest on interest-bearing bank deposits	197	135
Total interest and dividend income	38,740	41,554
Interest expense:
Interest on deposits	3,787	3,310
Interest on borrowings	231	206
Total interest expense	4,018	3,516
Net interest income before provision for loan losses	34,722	38,038
Provision for loan losses	1,795	10,619
Net interest income after provision for loan losses	32,927	27,419
Non-interest income:
Service charges	3,326	3,260
Bank card fees	2,804	2,767
Gain on sale of mortgages, net	454	474
Bank-owned life insurance income	470	395
Other non-interest income	1,414	691
OREO related write-ups and other income	228	336
Total non-interest income	8,696	7,923
Non-interest expense:
Salaries and benefits	20,390	20,612
Occupancy and equipment	5,437	6,066
Telecommunications and data processing	1,587	1,641
Marketing and business development	651	426
FDIC deposit insurance	705	921
Bank card expenses	883	913
Professional fees	416	456
Other non-interest expense	2,406	1,955
Problem asset workout	872	974
Gain on OREO sales, net	(112)	(432)
Intangible asset amortization	1,370	1,370
Total non-interest expense	34,605	34,902
Income before income taxes	7,018	440
Income tax expense	(1,240)	189
Net income	$ 8,258	$ 251
Income per share-basic (in dollars per share)	$ 0.31	$ 0.01
Income per share-diluted (in dollars per share)	$ 0.30	$ 0.01
Weighted average number of common shares outstanding:
Basic (Shares)	26,801,773	30,117,317
Diluted (Shares)	27,680,029	30,118,303

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 8,258	$ 251
Securities available-for-sale:
Net unrealized gains (losses) arising during the period, net of tax	263	8,978
Less: amortization of net unrealized holding gains to income, net of tax	(357)	(520)
Other comprehensive income (loss)	(94)	8,458
Comprehensive income (loss)	$ 8,164	$ 8,709

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Tax (expense) benefit on net unrealized gains arising during the period	$ (161)	$ (5,511)
Tax (expense) benefit of amortization of net unrealized holding gains to income	$ 218	$ 319

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			251			251
Stock-based compensation		929				929
Issuance under purchase and equity compensation plans, including (gain) loss on reissuance of treasury stock		(1,612)		1,806		194
Repurchase of shares				(21,941)		(21,941)
Cash dividends declared			(1,512)			(1,512)
Other comprehensive income (loss)					8,458	8,458
Balance in the ending at Mar. 31, 2016	513	997,243	37,409	(439,795)	8,553	603,923
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			8,258			8,258
Stock-based compensation		902				902
Issuance under purchase and equity compensation plans, including (gain) loss on reissuance of treasury stock		(11,314)		5,577		(5,737)
Cash dividends declared			(1,900)			(1,900)
Warrant exercise		(1,933)		1,933
Other comprehensive income (loss)					(94)	(94)
Balance in the ending at Mar. 31, 2017	$ 514	$ 971,742	$ 61,812	$ (494,594)	$ (1,856)	$ 537,618

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Gain (loss) on reissuance of treasury stock	$ 4,883	$ 41
Shares repurchased (shares)		1,117,274
Cash dividends declared per share	$ 0.07	$ 0.05

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 8,258	$ 251
Adjustments to reconcile net income to net cash used in operating activities:
Provision for loan losses	1,795	10,619
Depreciation and amortization	3,341	3,819
Current income tax receivable	444	2,747
Deferred income tax asset	(1,734)	2,641
Net excess tax (benefit) deficit on stock-based compensation	(2,845)
Discount accretion, net of premium amortization on securities	6,191	10,766
Loan accretion	703	1,448
Gain on sale of mortgage loans, net	(454)	(474)
Origination of loans held for sale, net of repayments	(14,925)	(18,790)
Proceeds from sales of loans held for sale	32,194	23,981
Bank-owned life insurance income	(470)	(395)
Gain on the sale of other real estate owned, net	(112)	(432)
Impairment on other real estate owned	46	69
Gain on sale of fixed assets	(3)
Stock-based compensation	902	929
(Increase) decrease in other assets	(3,280)	(5,631)
(Decrease) increase in other liabilities	3,576	(2,964)
Net cash used in (provided by) operating activities	21,245	7,052
Cash flows from investing activities:
Purchase of FHLB stock		(500)
Proceeds from redemption of FHLB stock	1,884	5,761
Proceeds from maturities of investment securities held-to-maturity	18,350	21,940
Proceeds from maturities of investment securities available-for-sale	59,155	63,314
Purchase of investment securities available-for-sale	(96,948)	(660)
Net increase in loans	(87,543)	(169)
Sales (purchases) of premises and equipment, net	(783)	(1,905)
Proceeds from sales of loans	20,269	6,675
Proceeds from sales of other real estate owned	755	632
Net cash provided by (used in) investing activities	(84,861)	95,088
Cash flows from financing activities:
Net increase (decrease) in deposits	99,294	(996)
Increase (decrease) in repurchase agreements	(314)	(50,171)
Advances from FHLB	92,798
FHLB payoffs	(54,683)
Issuance of stock under purchase and equity compensation plans	(5,737)	12
Payment of dividends	(2,048)	(1,512)
Repurchase of shares		(21,941)
Net cash provided by (used in) financing activities	129,310	(74,608)
(Decrease) increase in cash and cash equivalents	65,694	27,532
Cash and cash equivalents at beginning of the year	152,736	166,092
Cash and cash equivalents at end of year	218,430	193,624
Supplemental disclosure of cash flow information during the period:
Cash paid for interest	2,745	2,639
Net tax refunds (payments)	7	(8)
Supplemental schedule of non-cash investing activities:
Loans transferred to other real estate owned at fair value	578	474
Loans purchased but not settled	16,141	$ 667
Transfer of Loans Held-for-sale to Portfolio Loans	$ 3,825

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 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. 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	3 Months Ended
	Mar. 31, 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 March 31, 2017 and were comprised of $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 March 31, 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: March 31, 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 $ 206,779 $ 3,798 $ (543) $ 210,034 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 721,536 1,955 (15,282) 708,209 Municipal securities 3,228 — (9) 3,219 Other securities 419 — — 419 Total investment securities available-for-sale $ 931,962 $ 5,753 $ (15,834) $ 921,881 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 investment securities available-for-sale $ 894,737 $ 6,033 $ (16,538) $ 884,232 At March 31, 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: March 31, 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 $ 92,828 $ (543) $ — $ — $ 92,828 $ (543) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 200,493 (3,023) 365,901 (12,259) 566,394 (15,282) Municipal securities 3,058 (9) — — 3,058 (9) Total $ 296,379 $ (3,575) $ 365,901 $ (12,259) $ 662,280 $ (15,834) 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) Management evaluated all of the available-for-sale securities in an unrealized loss position and concluded that no OTTI existed at March 31, 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 March 31, 2017 were caused by changes in interest rates. The portfolio included 74 securities, having an aggregate fair value of $662.3 million, which were in an unrealized loss position at March 31, 2017, compared to 61 securities, with an aggregate fair value of $627.2 million 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 the Federal Home Loan Bank (“FHLB”), if needed. The fair value of available-for-sale investment securities pledged as collateral totaled $272.1 million and $373.7 million at March 31, 2017 and December 31, 2016, respectively. Certain investment securities may also be pledged as collateral for the line of credit at the FHLB; at March 31, 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 3.5 years and 3.4 years at March 31, 2017 and December 31, 2016, respectively. This estimate is based on assumptions and actual results may differ. At March 31, 2017 and December 31, 2016, the duration of the total available-for-sale investment portfolio was 3.2 years. As of March 31, 2017, municipal securities with an amortized cost and fair value of $2.3 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, while 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 March 31, 2017, have no stated contractual maturity date. Held-to-maturity At March 31, 2017 and December 31, 2016, the Company held $313.4 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: March 31, 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 $ 247,775 $ 1,367 $ (202) $ 248,940 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 65,671 7 (1,348) 64,330 Total investment securities held-to-maturity $ 313,446 $ 1,374 $ (1,550) $ 313,270 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: March 31, 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 $ 23,896 $ (202) $ — $ — $ 23,896 $ (202) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 25,504 (347) 30,768 (1,001) 56,272 (1,348) Total $ 49,400 $ (549) $ 30,768 $ (1,001) $ 80,168 $ (1,550) 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 14 securities, having an aggregate fair value of $80.2 million, which were in an unrealized loss position at March 31, 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 March 31, 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 March 31, 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 $136.7 million and $119.2 million at March 31, 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 March 31, 2017 and December 31, 2016 was 3.3 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 3.1 years and 3.2 years as of March 31, 2017 and December 31, 2016, respectively.

Loans

Loans	3 Months Ended
	Mar. 31, 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 $5.4 million and $6.3 million as of March 31, 2017 and December 31, 2016, respectively. At March 31, 2017 and December 31, 2016, $13.9 million and $14.4 million, respectively, of non 310-30 loans were held-for-sale, most of which were in the residential real estate segment. March 31, 2017 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 36,935 $ 1,604,661 $ 1,641,596 Commercial real estate non-owner occupied 86,842 451,151 537,993 Residential real estate 15,470 730,985 746,455 Consumer 817 26,794 27,611 Total $ 140,064 $ 2,813,591 $ 2,953,655 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 March 31, 2017 and December 31, 2016: March 31, 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 $ 216 $ 666 $ 7,932 $ 8,814 $ 1,141,874 $ 1,150,688 $ — $ 9,710 Owner occupied commercial real estate 1,441 720 1,772 3,933 232,402 236,335 — 2,786 Agriculture 491 — 2,043 2,534 125,613 128,147 — 2,659 Energy — — 6,621 6,621 82,870 89,491 — 12,697 Total commercial 2,148 1,386 18,368 21,902 1,582,759 1,604,661 — 27,852 Commercial real estate non-owner occupied: Construction — 215 — 215 115,288 115,503 — — Acquisition/development — — — — 15,577 15,577 — — Multifamily — — — — 25,278 25,278 — — Non-owner occupied 68 26 — 94 294,699 294,793 — 36 Total commercial real estate 68 241 — 309 450,842 451,151 — 36 Residential real estate: Senior lien 1,543 410 1,006 2,959 676,724 679,683 — 4,951 Junior lien 86 17 167 270 51,032 51,302 99 702 Total residential real estate 1,629 427 1,173 3,229 727,756 730,985 99 5,653 Consumer 119 11 6 136 26,658 26,794 6 175 Total loans excluded from ASC 310-30 $ 3,964 $ 2,065 $ 19,547 $ 25,576 $ 2,788,015 $ 2,813,591 $ 105 $ 33,716 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 $33.7 million at March 31, 2017, increasing $3.0 million, or 9.8% from December 31, 2016. The increase was driven primarily by two loan relationships totaling a combined $1.5 million at March 31, 2017 within the owner occupied commercial real estate and agriculture segments, and one existing non-accrual commercial and industrial loan which increased $1.3 million during the quarter. Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows at March 31, 2017 and December 31, 2016: March 31, 2017 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,120,420 $ 5,009 $ 24,768 $ 491 $ 1,150,688 Owner occupied commercial real estate 217,628 14,308 4,399 — 236,335 Agriculture 92,000 32,456 3,691 — 128,147 Energy 76,785 — 7,357 5,349 89,491 Total commercial 1,506,833 51,773 40,215 5,840 1,604,661 Commercial real estate non-owner occupied: Construction 115,288 — 215 — 115,503 Acquisition/development 13,064 2,513 — — 15,577 Multifamily 23,081 — 2,197 — 25,278 Non-owner occupied 291,608 1,577 1,608 — 294,793 Total commercial real estate 443,041 4,090 4,020 — 451,151 Residential real estate: Senior lien 673,769 253 5,650 11 679,683 Junior lien 50,023 — 1,279 — 51,302 Total residential real estate 723,792 253 6,929 11 730,985 Consumer 26,557 57 180 — 26,794 Total loans excluded from ASC 310-30 $ 2,700,223 $ 56,173 $ 51,344 $ 5,851 $ 2,813,591 Loans accounted for under ASC 310-30: Commercial $ 27,573 $ 1,132 $ 8,230 $ — $ 36,935 Commercial real estate non-owner occupied 53,228 954 32,660 — 86,842 Residential real estate 12,424 1,315 1,731 — 15,470 Consumer 629 16 172 — 817 Total loans accounted for under ASC 310-30 $ 93,854 $ 3,417 $ 42,793 $ — $ 140,064 Total loans $ 2,794,077 $ 59,590 $ 94,137 $ 5,851 $ 2,953,655 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 special mention loans within the owner occupied commercial real estate sector increased from December 31, 2016, largely due to two loan relationship upgrades totaling $5.4 million from substandard to special mention in the first quarter of 2017. Non 310-30 special mention loans within the agriculture sector increased from December 31, 2016, due to two loan relationship downgrades to special mention totaling $23.5 million at March 31, 2017. Both relationships are current with respect to principal and interest payments. 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 March 31, 2017, the Company measured $30.6 million of impaired loans based on the fair value of the collateral less selling costs and $2.6 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 March 31, 2017 and December 31, 2016, the Company’s recorded investments in impaired loans was $41.1 million and $38.3 million, respectively. Impaired loans at March 31, 2017 were primarily comprised of seven relationships totaling $25.5 million. Three of the relationships were in the commercial and industrial sector, three of the relationships were in the energy sector and one relationship was in the agricultural sector. Impaired loans had a collective related allowance for loan losses allocated to them of $2.9 million and $2.4 million at March 31, 2017 and December 31, 2016, respectively. Additional information regarding impaired loans at March 31, 2017 and December 31, 2016 is set forth in the table below: March 31, 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 $ 9,676 $ 8,507 $ — $ 8,671 $ 7,495 $ — Owner occupied commercial real estate 4,027 3,877 — 3,350 3,197 — Agriculture 2,798 2,740 — 2,044 1,987 — Energy 17,157 6,085 — 17,142 6,105 — Total commercial 33,658 21,209 — 31,207 18,784 — Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily 32 32 — 33 33 — Non-owner occupied 373 322 — 394 343 — Total commercial real estate 405 354 — 427 376 — Residential real estate: Senior lien 1,100 1,042 — 1,551 1,426 — Junior lien — — — 54 51 — Total residential real estate 1,100 1,042 — 1,605 1,477 — Consumer 4 4 — 4 4 — Total impaired loans with no related allowance recorded $ 35,167 $ 22,609 $ — $ 33,243 $ 20,641 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 3,476 $ 3,443 $ 491 $ 3,495 $ 3,464 $ 492 Owner occupied commercial real estate 932 673 3 957 642 2 Agriculture — — — — — — Energy 11,288 6,621 2,372 11,216 6,548 1,866 Total commercial 15,696 10,737 2,866 15,668 10,654 2,360 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 226 220 1 261 255 1 Total commercial real estate 226 220 1 261 255 1 Residential real estate: Senior lien 6,418 5,748 33 5,646 5,016 31 Junior lien 1,854 1,613 14 1,781 1,532 14 Total residential real estate 8,272 7,361 47 7,427 6,548 45 Consumer 180 176 2 188 184 2 Total impaired loans with a related allowance recorded $ 24,374 $ 18,494 $ 2,916 $ 23,544 $ 17,641 $ 2,408 Total impaired loans $ 59,541 $ 41,103 $ 2,916 $ 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 March 31, 2017 March 31, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 8,095 $ 48 $ 4,919 $ 68 Owner occupied commercial real estate 3,885 18 1,912 29 Agriculture 2,588 — 1,758 — Energy 6,098 — — — Total commercial 20,666 66 8,589 97 Commercial real estate non-owner occupied: Construction — — 189 — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 329 7 719 — Total commercial real estate 329 7 908 — Residential real estate: Senior lien 1,047 3 1,376 4 Junior lien — — 289 — Total residential real estate 1,047 3 1,665 4 Consumer 4 — — — Total impaired loans with no related allowance recorded $ 22,046 $ 76 $ 11,162 $ 101 With a related allowance recorded: Commercial: Commercial and industrial $ 3,445 $ — $ 4,479 $ — Owner occupied commercial real estate 678 5 889 4 Agriculture 156 1 180 1 Energy 6,589 — 32,068 — Total commercial 10,868 6 37,616 5 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 32 — 36 — Non-owner occupied 223 3 833 15 Total commercial real estate 255 3 869 15 Residential real estate: Senior lien 5,791 21 4,799 19 Junior lien 1,625 13 1,937 13 Total residential real estate 7,416 34 6,736 32 Consumer 181 — 64 — Total impaired loans with a related allowance recorded $ 18,720 $ 43 $ 45,285 $ 52 Total impaired loans $ 40,766 $ 119 $ 56,447 $ 153 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 using the cash-basis method of accounting during the three months ended March 31, 2017 and 2016 was $0.1 million. 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 March 31, 2017 and December 31, 2016, the Company had $5.6 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 March 31, 2017 and December 31, 2016 totaled $25.1 million and $16.7 million, respectively. During the three months ended March 31, 2017, the Company restructured five loans with a recorded investment of $6.9 million to facilitate repayment. 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 March 31, 2017 and December 31, 2016: March 31, 2017 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,273 $ 3,284 $ 3,430 $ 100 Commercial real estate non-owner occupied 512 521 564 — Residential real estate 1,799 1,814 1,848 2 Consumer 5 6 5 — Total $ 5,589 $ 5,625 $ 5,847 $ 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 March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Commercial $ 23,577 $ 15,265 Commercial real estate non-owner occupied — — Residential real estate 1,368 1,301 Consumer 134 142 Total non-accruing TDRs $ 25,079 $ 16,708 Accrual of interest is resumed on loans that were on non-accrual only after the loan has performed sufficiently. The Company had one TDR that was modified within the past twelve months and had defaulted on its restructured terms during the three months ended March 31, 2017. The defaulted TDR consisted of one agriculture sector loan totaling $1.6 million. 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 months ended March 31, 2016, the Company had five TDRs that had been modified within the past 12 months that defaulted on their restructured terms. 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 three months ended March 31, 2017 and 2016: March 31, 2017 March 31, 2016 Accretable yield beginning balance $ 60,476 $ 84,194 Reclassification from non-accretable difference 5,385 3,184 Reclassification to non-accretable difference (399) (2,077) Accretion (5,871) (10,294) Accretable yield ending balance $ 59,591 $ 75,007 Below is the composition of the net book value for loans accounted for under ASC 310-30 at March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Contractual cash flows $ 525,952 $ 537,611 Non-accretable difference (326,297) (331,283) Accretable yield (59,591) (60,476) Loans accounted for under ASC 310-30 $ 140,064 $ 145,852

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016: Three months ended March 31, 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) — (8) (182) (210) Recoveries 11 10 3 67 91 Provision 1,727 167 (166) 72 1,800 Non 310-30 ending balance 20,539 5,599 4,216 276 30,630 ASC 310-30 beginning balance — 220 — 5 225 Charge-offs — — — — — Recoveries — — — — — Recoupment — (4) — (1) (5) ASC 310-30 ending balance — 216 — 4 220 Ending balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 2,866 $ 1 $ 47 $ 2 $ 2,916 Non 310-30 loans collectively evaluated for impairment 17,673 5,598 4,169 274 27,714 ASC 310-30 loans — 216 — 4 220 Total ending allowance balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Loans: Non 310-30 individually evaluated for impairment $ 31,946 $ 574 $ 8,403 $ 180 $ 41,103 Non 310-30 collectively evaluated for impairment 1,572,715 450,577 722,582 26,614 2,772,488 ASC 310-30 loans 36,935 86,842 15,470 817 140,064 Total loans $ 1,641,596 $ 537,993 $ 746,455 $ 27,611 $ 2,953,655 Three months ended March 31, 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 (106) (276) (57) (220) (659) Recoveries 9 9 7 62 87 Provision 12,234 131 (906) 22 11,481 Non 310-30 ending balance 28,610 3,803 4,289 249 36,951 ASC 310-30 beginning balance 788 227 36 26 1,077 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision (714) (169) — 21 (862) ASC 310-30 ending balance 74 58 36 47 215 Ending balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 13,929 $ 3 $ 35 $ 1 $ 13,968 Non 310-30 loans collectively evaluated for impairment 14,681 3,800 4,254 248 22,983 ASC 310-30 loans 74 58 36 47 215 Total ending allowance balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Loans: Non 310-30 individually evaluated for impairment $ 45,938 $ 1,405 $ 7,335 $ 62 $ 54,740 Non 310-30 collectively evaluated for impairment 1,327,518 336,907 667,013 26,362 2,357,800 ASC 310-30 loans 49,628 108,003 20,037 1,839 179,507 Total loans $ 1,423,084 $ 446,315 $ 694,385 $ 28,263 $ 2,592,047 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. The Company had $0.1 million net charge-offs on non 310-30 loans during the three months ended March 31, 2017. Management's evaluation of credit quality resulted in a provision for loan losses on the non 310-30 loans of $1.8 million during the three months ended March 31, 2017, driven by loan growth and increased reserves of $0.5 million for one energy credit previously placed on non-accrual. During the three months ended March 31, 2016, the Company had $0.6 million of net charge offs on non ASC 310-30 loans and recorded a provision for loan losses on non 310-30 loans of $11.5 million, driven by increased reserves against the energy sector portfolio of $10.7 million, including increased specific reserves of $9.1 million on four impaired loans. During the three months ended March 31, 2017 and 2016, the Company re-estimated the expected cash flows of the loan pools accounted for under ASC 310-30. The re-measurement during the three months ended March 31, 2017 resulted in a net recoupment of $5 thousand. The re-measurement during the three months ended March 31, 2016 resulted in a net recoupment of $862 thousand for the three months ended March 31, 2016, which was comprised primarily of a recoupment of $714 thousand in the commercial segment and a recoupment of $169 thousand in the non-owner occupied commercial real estate segment.

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2017
FDIC Loss-Sharing Related
Other Real Estate Owned	Note 6 Other Real Estate Owned A summary of the activity in the OREO balances during the three months ended March 31, 2017 and 2016 is as follows: For the three months ended March 31, 2017 2016 Beginning balance $ 15,662 $ 20,814 Transfers from loan portfolio, at fair value 578 474 Impairments (46) (69) Sales, net (642) (200) Ending balance $ 15,552 $ 21,019 At March 31, 2017 and December 31, 2016, OREO balances excluded $1.6 million, respectively, 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 $0.1 million and $0.4 million for the three months ended March 31, 2017 and 2016, respectively.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2017
Disclosure of Repurchase Agreements [Abstract]
Borrowings	Note 7 Borrowings As of March 31, 2017 and December 31, 2016, the Company sold securities under agreements to repurchase totaling $91.7 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 $108.5 million and $99.1 million as of March 31, 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 March 31, 2017 and December 31, 2016, the Company had $30.2 million and $7.0 million of excess collateral pledged for repurchases agreements. The repurchase agreements are subject to a master netting arrangement; however, the Company has not offset any of the amounts shown 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 $830.2 million at March 31, 2017. At March 31, 2017 and December 31, 2016, the Bank had $75.0 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 $27.2 million at March 31, 2017 and $28.8 million at December 31, 2016. Interest expense related to FHLB advances totaled $197 thousand and $166 thousand for the three months ended March 31, 2017 and 2016, respectively.

Regulatory Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 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 March 31, 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. In February 2016, the Bank received approval from the Colorado Division of Banking and the Federal Reserve Bank of Kansas City to permanently reduce the Bank's capital by $140.0 million. As a result, the Bank distributed $140.0 million in cash to the Company in February 2016. At March 31, 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 March 31, 2017 and December 31, 2016: March 31, 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 $ 463,885 N/A N/A $ 181,637 NBH Bank 379,484 $ 203,501 180,890 Common equity tier 1 risk-based capital: Consolidated $ 463,885 N/A N/A $ 204,341 NBH Bank 379,484 $ 293,946 203,501 Tier 1 risk-based capital ratio: Consolidated $ 463,885 N/A N/A $ 205,828 NBH Bank 379,484 $ 272,814 204,610 Total risk-based capital ratio: Consolidated $ 495,061 N/A N/A $ 274,438 NBH Bank 410,660 $ 341,017 272,814 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	3 Months Ended
	Mar. 31, 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 three months ended March 31, 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 option awards vest on a graded basis over 1-4 years of continuous service and have 7-10 year contractual terms. The Company issued stock options in accordance with the 2014 Plan during 2016. The following table summarizes stock option activity for the three months ended March 31, 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 98,389 34.01 Forfeited (4,713) 18.90 Surrendered (432,939) 19.98 Exercised (126,958) 19.98 Outstanding at March 31, 2017 1,719,701 $ 20.56 6.32 $ 20,635 Options exercisable at March 31, 2017 1,292,139 $ 19.88 3.53 $ 16,301 Options expected to vest 1,377,509 $ 20.77 4.31 $ 19,649 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 March 31, 2017 and 2016, respectively. At March 31, 2017, there was $1.0 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 2.6 years. Restricted stock awards The Company issued time based restricted stock during the three months ended March 31, 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. Restricted stock awards with market vesting components (granted in 2010, 2011, and 2012) were valued using a Monte Carlo Simulation with 100,000 simulation paths to assess the expected percentage of vested shares. A Geometric Brownian Motion was used for simulating the equity prices for a period of ten years and if the restricted stock were not vested during the ten-year period, it was assumed they were forfeited. No market-based stock awards were granted during the first quarter of 2017. During the three months ended March 31, 2016, the Company granted market-based stock 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 March 31, 2017, the market-based performance condition had been met for these awards and the total unrecognized compensation cost related to these non-vested awards totaled $0.3 million, and is expected to be recognized over a weighted average period of approximately 2.1 years. Performance stock units During the three months ended March 31, 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 three months ended March 31, 2017 of the EPS target portion and the TSR target portion was $34.04 and $32.06, respectively. The following table summarizes restricted stock activity during the three months ended March 31, 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 Vested (99,967) 13.01 — — Granted 47,199 33.94 49,758 33.22 Forfeited (2,602) 18.94 (932) 18.22 Surrendered (87,494) 13.01 — — Unvested at March 31, 2017 356,407 $ 19.68 134,121 $ 23.78 As of March 31, 2017, the total unrecognized compensation cost related to the non-vested units totaled $2.3 million, and is expected to be recognized over a weighted average period of approximately 2.5 years. Expense related to non-vested restricted awards and units totaled $0.7 million during the three months ended March 31, 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 was available for issuance. Under the ESPP, employees purchased 5,373 shares during the three months ended March 31, 2017.

Warrants

Warrants	3 Months Ended
	Mar. 31, 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.

Common Stock

Common Stock	3 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Common Stock	Note 11 Common Stock 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 March 31, 2017 was $12.6 million. The Company had 26,715,532 and 26,386,583 shares of Class A common stock outstanding at March 31, 2017 and December 31, 2016, respectively. Additionally, the Company had 356,407 and 499,271 shares outstanding at March 31, 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.

Income Per Share

Income Per Share	3 Months Ended
	Mar. 31, 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 26,715,532 and 29,252,419 shares of Class A common stock outstanding as of March 31, 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 months ended March 31, 2017 and 2016. The following table illustrates the computation of basic and diluted income per share for the three months ended March 31, 2017 and 2016: For the three months ended March 31, 2017 March 31, 2016 Net income $ 8,258 $ 251 Less: income allocated to participating securities (8) (14) Income allocated to common shareholders $ 8,250 $ 237 Weighted average shares outstanding for basic income per common share 26,801,773 30,117,317 Dilutive effect of equity awards 844,473 986 Dilutive effect of warrants 33,783 — Weighted average shares outstanding for diluted income per common share 27,680,029 30,118,303 Basic income per share $ 0.31 $ 0.01 Diluted income per share $ 0.30 $ 0.01 The Company had 1,719,701 and 2,712,102 outstanding stock options to purchase common stock at weighted average exercise prices of $20.56 and $19.81 per share at March 31, 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. The warrants had an exercise price of $20.00, which were in-the-money for purposes of the dilution calculations during the three months ended March 31, 2017 and 2016. The Company had 356,407 and 1,000,275 unvested restricted shares and units issued as of March 31, 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	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 13 Income Taxes The income tax rate for the three months ended March 31, 2017 and 2016 was a benefit of (17.7)% and an expense of 43.0%, respectively, calculated based on a full year forecast method. The tax benefit recorded for the three months ended March 31, 2017 was driven by a $2.8 million tax benefit from stock compensation activity during the first quarter of 2017. The tax expense recorded for the three months ended March 31, 2016 was higher due to a write off of deferred tax assets associated with stock compensation activity. Without the discrete items related to stock compensation activity, the quarterly effective tax rate was consistent period-to-period. The quarterly effective 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	3 Months Ended
	Mar. 31, 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 in the consolidated statements of financial condition as of March 31, 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 March 31, December 31, Balance Sheet March 31, December 31, Location 2017 2016 Location 2017 2016 Derivatives designated as hedging instruments: Interest rate products Other assets $ 10,420 $ 9,528 Other liabilities $ 1,210 $ 1,381 Total derivatives designated as hedging instruments $ 10,420 $ 9,528 $ 1,210 $ 1,381 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 2,160 $ 1,900 Other liabilities $ 2,191 $ 1,898 Interest rate lock commitments Other assets 149 Other liabilities — 6 Forward contracts Other assets — 138 Other liabilities 20 Forward loan sales agreements Loans held for sale 18 — Loans held for sale — 161 Total derivatives not designated as hedging instruments $ 2,443 $ 2,187 $ 2,266 $ 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 March 31, 2017, the Company had 49 interest rate swaps with a notional amount of $340.1 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 months ended March 31, 2017, the Company recognized a net loss of $177 thousand in non-interest income related to hedge ineffectiveness. During the three months ended March 31 2016, the Company recognized a net loss of $662 thousand 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 March 31, 2017, the Company had 38 matched interest rate swap transactions with an aggregate notional amount of $143.7 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 under the forward sales agreement. 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 91 interest rate lock commitments with a notional value of $17.4 million, ten forward contracts with a notional value of $11.3 million and eleven forward loan sales commitments with a notional value of $1.3 million at March 31, 2017. At December 31, 2016, the Company had 78 interest rate lock commitments with a notional value of $13.8 million, eleven forward contracts with a notional value of $11.8 million and 70 forward loan sales commitments with a notional value of $12.0 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 months ended March 31, 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 March 31, hedging relationships derivatives 2017 2016 Interest rate products Other non-interest income $ 1,064 $ (10,901) Total $ 1,064 $ (10,901) Location of gain (loss) Amount of gain (loss) recognized in income on hedged items recognized in income on For the three months ended March 31, Hedged items hedged items 2017 2016 Interest rate products Other non-interest income $ (1,241) $ 10,239 Total $ (1,241) $ 10,239 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 March 31, as hedging instruments derivatives 2017 2016 Interest rate products Other non-interest expense $ (32) $ (93) Interest rate lock commitments Gain on sale of mortgages, net 123 — Forward contracts Gain on sale of mortgages, net (193) — Forward loan sales agreements Gain on sale of mortgages, net 178 — Total $ 76 $ (93) 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 March 31, 2017 and December 31, 2016, the termination value of derivatives in a net liability position related to these agreements was $0.6 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 March 31, 2017 and December 31, 2016, the Company had posted $0.9 million and $0.8 million, respectively, in eligible collateral. If the Company had breached any of these provisions at March 31, 2017, it could have been required to settle its obligations under the agreements at the termination value.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016, the Company had loan commitments totaling $655.8 million and $602.2 million, respectively, and standby letters of credit that totaled $14.3 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 March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 December 31, 2016 Commitments to fund loans $ 185,842 $ 149,391 Unfunded commitments under lines of credit 469,943 452,851 Commercial and standby letters of credit 14,325 13,532 Total unfunded commitments $ 670,110 $ 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	3 Months Ended
	Mar. 31, 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 three months ended March 31, 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 March 31, 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 March 31, 2017 and December 31, 2016 in the consolidated statements of financial condition utilizing the hierarchy structure described above: March 31, 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 $ — $ 210,034 $ — $ 210,034 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 708,209 — 708,209 Municipal securities — 2,954 — 2,954 Interest rate swap derivatives — 12,580 — 12,580 Mortgage banking derivatives — — 283 Total assets at fair value $ — $ 933,777 $ 283 $ 934,060 Liabilities: Interest rate swap derivatives $ — $ 3,401 $ — $ 3,401 Mortgage banking derivatives — — 75 Total liabilities at fair value $ — $ 3,401 $ 75 $ 3,476 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 — — 187 Total liabilities at fair value $ — $ 3,279 $ 187 $ 3,466 The table below details the changes in level 3 financial instruments during the three months ended March 31, 2017: Mortgage banking derivatives, net Balance at December 31, 2016 $ 100 Gain included in earnings, net 108 Balance at March 31, 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 March 31, 2017, the Company measured three loans not accounted for under ASC 310-30 at fair value on a non-recurring basis, with a carrying balance of $10.6 million and specific reserve balance of $2.9 million. At March 31, 2016, the Company measured seven loans with a total carrying balance of $36.9 million and total specific reserves of $14.1 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 $69 thousand of OREO impairments in the consolidated statements of operations during the three months ended March 31, 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 three months ended March 31, 2017 and 2016: March 31, 2017 Total Losses from fair value changes Other real estate owned $ 15,552 $ 46 Impaired loans 41,103 209 March 31, 2016 Total Losses from fair value changes Other real estate owned $ 21,019 $ 69 Impaired loans 56,257 502 The Company did not record any liabilities for which the fair value was made on a non-recurring basis during the three months ended March 31, 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 March 31, 2017. The table below excludes non-recurring fair value measurements of collateral value used for impairment measures for OREO and premises and equipment. These valuations utilize third party appraisal or broker price opinions, and are classified as level 3 due to the significant judgment involved: Fair value at March 31, 2017 Valuation technique Unobservable input Qualitative measures Other available-for-sale securities $ 419 Par value Par value Municipal securities 265 Par value Par value Impaired loans 41,103 Appraised value Appraised values Discount rate 0% - 25%

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 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 March 31, 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 March 31, 2017 December 31, 2016 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 218,430 $ 218,430 $ 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 2 210,034 210,034 227,160 227,160 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 708,209 708,209 652,739 652,739 Municipal securities Level 2 2,954 2,954 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 2 247,775 248,940 263,411 264,862 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 65,671 64,330 69,094 67,711 Non-marketable securities Level 2 13,065 13,065 14,949 14,949 Loans receivable Level 3 2,953,655 2,960,288 2,860,921 2,879,860 Loans held-for-sale Level 2 3,547 3,547 24,187 24,187 Accrued interest receivable Level 2 14,332 14,332 12,562 12,562 Interest rate swap derivatives Level 2 12,580 12,580 11,428 11,428 Mortgage banking derivatives Level 3 287 287 LIABILITIES Deposit transaction accounts Level 2 2,782,949 2,782,949 2,696,603 2,696,603 Time deposits Level 2 1,184,994 1,184,994 1,172,046 1,172,046 Securities sold under agreements to repurchase Level 2 91,697 91,697 92,011 92,011 Federal Home Loan Bank advances Level 2 76,780 78,569 38,665 39,324 Accrued interest payable Level 2 6,246 6,246 4,973 4,973 Interest rate swap derivatives Level 2 3,401 3,401 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 14. 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)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	At March 31, 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: March 31, 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 $ 206,779 $ 3,798 $ (543) $ 210,034 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 721,536 1,955 (15,282) 708,209 Municipal securities 3,228 — (9) 3,219 Other securities 419 — — 419 Total investment securities available-for-sale $ 931,962 $ 5,753 $ (15,834) $ 921,881 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 investment securities available-for-sale $ 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: March 31, 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 $ 92,828 $ (543) $ — $ — $ 92,828 $ (543) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 200,493 (3,023) 365,901 (12,259) 566,394 (15,282) Municipal securities 3,058 (9) — — 3,058 (9) Total $ 296,379 $ (3,575) $ 365,901 $ (12,259) $ 662,280 $ (15,834) 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: March 31, 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 $ 247,775 $ 1,367 $ (202) $ 248,940 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 65,671 7 (1,348) 64,330 Total investment securities held-to-maturity $ 313,446 $ 1,374 $ (1,550) $ 313,270 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: March 31, 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 $ 23,896 $ (202) $ — $ — $ 23,896 $ (202) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 25,504 (347) 30,768 (1,001) 56,272 (1,348) Total $ 49,400 $ (549) $ 30,768 $ (1,001) $ 80,168 $ (1,550) 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)	3 Months Ended
	Mar. 31, 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 $5.4 million and $6.3 million as of March 31, 2017 and December 31, 2016, respectively. At March 31, 2017 and December 31, 2016, $13.9 million and $14.4 million, respectively, of non 310-30 loans were held-for-sale, most of which were in the residential real estate segment. March 31, 2017 ASC 310-30 loans Non 310-30 loans Total loans % of total Commercial $ 36,935 $ 1,604,661 $ 1,641,596 Commercial real estate non-owner occupied 86,842 451,151 537,993 Residential real estate 15,470 730,985 746,455 Consumer 817 26,794 27,611 Total $ 140,064 $ 2,813,591 $ 2,953,655 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 March 31, 2017 and December 31, 2016: March 31, 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 $ 216 $ 666 $ 7,932 $ 8,814 $ 1,141,874 $ 1,150,688 $ — $ 9,710 Owner occupied commercial real estate 1,441 720 1,772 3,933 232,402 236,335 — 2,786 Agriculture 491 — 2,043 2,534 125,613 128,147 — 2,659 Energy — — 6,621 6,621 82,870 89,491 — 12,697 Total commercial 2,148 1,386 18,368 21,902 1,582,759 1,604,661 — 27,852 Commercial real estate non-owner occupied: Construction — 215 — 215 115,288 115,503 — — Acquisition/development — — — — 15,577 15,577 — — Multifamily — — — — 25,278 25,278 — — Non-owner occupied 68 26 — 94 294,699 294,793 — 36 Total commercial real estate 68 241 — 309 450,842 451,151 — 36 Residential real estate: Senior lien 1,543 410 1,006 2,959 676,724 679,683 — 4,951 Junior lien 86 17 167 270 51,032 51,302 99 702 Total residential real estate 1,629 427 1,173 3,229 727,756 730,985 99 5,653 Consumer 119 11 6 136 26,658 26,794 6 175 Total loans excluded from ASC 310-30 $ 3,964 $ 2,065 $ 19,547 $ 25,576 $ 2,788,015 $ 2,813,591 $ 105 $ 33,716 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 at March 31, 2017 and December 31, 2016: March 31, 2017 Special Pass mention Substandard Doubtful Total Loans excluded from ASC 310-30: Commercial: Commercial and industrial $ 1,120,420 $ 5,009 $ 24,768 $ 491 $ 1,150,688 Owner occupied commercial real estate 217,628 14,308 4,399 — 236,335 Agriculture 92,000 32,456 3,691 — 128,147 Energy 76,785 — 7,357 5,349 89,491 Total commercial 1,506,833 51,773 40,215 5,840 1,604,661 Commercial real estate non-owner occupied: Construction 115,288 — 215 — 115,503 Acquisition/development 13,064 2,513 — — 15,577 Multifamily 23,081 — 2,197 — 25,278 Non-owner occupied 291,608 1,577 1,608 — 294,793 Total commercial real estate 443,041 4,090 4,020 — 451,151 Residential real estate: Senior lien 673,769 253 5,650 11 679,683 Junior lien 50,023 — 1,279 — 51,302 Total residential real estate 723,792 253 6,929 11 730,985 Consumer 26,557 57 180 — 26,794 Total loans excluded from ASC 310-30 $ 2,700,223 $ 56,173 $ 51,344 $ 5,851 $ 2,813,591 Loans accounted for under ASC 310-30: Commercial $ 27,573 $ 1,132 $ 8,230 $ — $ 36,935 Commercial real estate non-owner occupied 53,228 954 32,660 — 86,842 Residential real estate 12,424 1,315 1,731 — 15,470 Consumer 629 16 172 — 817 Total loans accounted for under ASC 310-30 $ 93,854 $ 3,417 $ 42,793 $ — $ 140,064 Total loans $ 2,794,077 $ 59,590 $ 94,137 $ 5,851 $ 2,953,655 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 March 31, 2017 and December 31, 2016 is set forth in the table below: March 31, 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 $ 9,676 $ 8,507 $ — $ 8,671 $ 7,495 $ — Owner occupied commercial real estate 4,027 3,877 — 3,350 3,197 — Agriculture 2,798 2,740 — 2,044 1,987 — Energy 17,157 6,085 — 17,142 6,105 — Total commercial 33,658 21,209 — 31,207 18,784 — Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily 32 32 — 33 33 — Non-owner occupied 373 322 — 394 343 — Total commercial real estate 405 354 — 427 376 — Residential real estate: Senior lien 1,100 1,042 — 1,551 1,426 — Junior lien — — — 54 51 — Total residential real estate 1,100 1,042 — 1,605 1,477 — Consumer 4 4 — 4 4 — Total impaired loans with no related allowance recorded $ 35,167 $ 22,609 $ — $ 33,243 $ 20,641 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 3,476 $ 3,443 $ 491 $ 3,495 $ 3,464 $ 492 Owner occupied commercial real estate 932 673 3 957 642 2 Agriculture — — — — — — Energy 11,288 6,621 2,372 11,216 6,548 1,866 Total commercial 15,696 10,737 2,866 15,668 10,654 2,360 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 226 220 1 261 255 1 Total commercial real estate 226 220 1 261 255 1 Residential real estate: Senior lien 6,418 5,748 33 5,646 5,016 31 Junior lien 1,854 1,613 14 1,781 1,532 14 Total residential real estate 8,272 7,361 47 7,427 6,548 45 Consumer 180 176 2 188 184 2 Total impaired loans with a related allowance recorded $ 24,374 $ 18,494 $ 2,916 $ 23,544 $ 17,641 $ 2,408 Total impaired loans $ 59,541 $ 41,103 $ 2,916 $ 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 March 31, 2017 March 31, 2016 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 8,095 $ 48 $ 4,919 $ 68 Owner occupied commercial real estate 3,885 18 1,912 29 Agriculture 2,588 — 1,758 — Energy 6,098 — — — Total commercial 20,666 66 8,589 97 Commercial real estate non-owner occupied: Construction — — 189 — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 329 7 719 — Total commercial real estate 329 7 908 — Residential real estate: Senior lien 1,047 3 1,376 4 Junior lien — — 289 — Total residential real estate 1,047 3 1,665 4 Consumer 4 — — — Total impaired loans with no related allowance recorded $ 22,046 $ 76 $ 11,162 $ 101 With a related allowance recorded: Commercial: Commercial and industrial $ 3,445 $ — $ 4,479 $ — Owner occupied commercial real estate 678 5 889 4 Agriculture 156 1 180 1 Energy 6,589 — 32,068 — Total commercial 10,868 6 37,616 5 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily 32 — 36 — Non-owner occupied 223 3 833 15 Total commercial real estate 255 3 869 15 Residential real estate: Senior lien 5,791 21 4,799 19 Junior lien 1,625 13 1,937 13 Total residential real estate 7,416 34 6,736 32 Consumer 181 — 64 — Total impaired loans with a related allowance recorded $ 18,720 $ 43 $ 45,285 $ 52 Total impaired loans $ 40,766 $ 119 $ 56,447 $ 153
Additional Information Related to Accruing TDR's	The table below provides additional information related to accruing TDRs at March 31, 2017 and December 31, 2016: March 31, 2017 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investments principal balance to fund TDRs Commercial $ 3,273 $ 3,284 $ 3,430 $ 100 Commercial real estate non-owner occupied 512 521 564 — Residential real estate 1,799 1,814 1,848 2 Consumer 5 6 5 — Total $ 5,589 $ 5,625 $ 5,847 $ 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 March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Commercial $ 23,577 $ 15,265 Commercial real estate non-owner occupied — — Residential real estate 1,368 1,301 Consumer 134 142 Total non-accruing TDRs $ 25,079 $ 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 three months ended March 31, 2017 and 2016: March 31, 2017 March 31, 2016 Accretable yield beginning balance $ 60,476 $ 84,194 Reclassification from non-accretable difference 5,385 3,184 Reclassification to non-accretable difference (399) (2,077) Accretion (5,871) (10,294) Accretable yield ending balance $ 59,591 $ 75,007
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 March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Contractual cash flows $ 525,952 $ 537,611 Non-accretable difference (326,297) (331,283) Accretable yield (59,591) (60,476) Loans accounted for under ASC 310-30 $ 140,064 $ 145,852

Allowance for Loan Losses - (Ta

Allowance for Loan Losses - (Tables)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016: Three months ended March 31, 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) — (8) (182) (210) Recoveries 11 10 3 67 91 Provision 1,727 167 (166) 72 1,800 Non 310-30 ending balance 20,539 5,599 4,216 276 30,630 ASC 310-30 beginning balance — 220 — 5 225 Charge-offs — — — — — Recoveries — — — — — Recoupment — (4) — (1) (5) ASC 310-30 ending balance — 216 — 4 220 Ending balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 2,866 $ 1 $ 47 $ 2 $ 2,916 Non 310-30 loans collectively evaluated for impairment 17,673 5,598 4,169 274 27,714 ASC 310-30 loans — 216 — 4 220 Total ending allowance balance $ 20,539 $ 5,815 $ 4,216 $ 280 $ 30,850 Loans: Non 310-30 individually evaluated for impairment $ 31,946 $ 574 $ 8,403 $ 180 $ 41,103 Non 310-30 collectively evaluated for impairment 1,572,715 450,577 722,582 26,614 2,772,488 ASC 310-30 loans 36,935 86,842 15,470 817 140,064 Total loans $ 1,641,596 $ 537,993 $ 746,455 $ 27,611 $ 2,953,655 Three months ended March 31, 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 (106) (276) (57) (220) (659) Recoveries 9 9 7 62 87 Provision 12,234 131 (906) 22 11,481 Non 310-30 ending balance 28,610 3,803 4,289 249 36,951 ASC 310-30 beginning balance 788 227 36 26 1,077 Charge-offs — — — — — Recoveries — — — — — (Recoupment) provision (714) (169) — 21 (862) ASC 310-30 ending balance 74 58 36 47 215 Ending balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Ending allowance balance attributable to: Non 310-30 loans individually evaluated for impairment $ 13,929 $ 3 $ 35 $ 1 $ 13,968 Non 310-30 loans collectively evaluated for impairment 14,681 3,800 4,254 248 22,983 ASC 310-30 loans 74 58 36 47 215 Total ending allowance balance $ 28,684 $ 3,861 $ 4,325 $ 296 $ 37,166 Loans: Non 310-30 individually evaluated for impairment $ 45,938 $ 1,405 $ 7,335 $ 62 $ 54,740 Non 310-30 collectively evaluated for impairment 1,327,518 336,907 667,013 26,362 2,357,800 ASC 310-30 loans 49,628 108,003 20,037 1,839 179,507 Total loans $ 1,423,084 $ 446,315 $ 694,385 $ 28,263 $ 2,592,047

Other Real Estate Owned - (Tabl

Other Real Estate Owned - (Tables)	3 Months Ended
	Mar. 31, 2017
FDIC Loss-Sharing Related
Summary of Activity in OREO Balances	A summary of the activity in the OREO balances during the three months ended March 31, 2017 and 2016 is as follows: For the three months ended March 31, 2017 2016 Beginning balance $ 15,662 $ 20,814 Transfers from loan portfolio, at fair value 578 474 Impairments (46) (69) Sales, net (642) (200) Ending balance $ 15,552 $ 21,019

Regulatory Capital - (Tables)

Regulatory Capital - (Tables)	3 Months Ended
	Mar. 31, 2017
Parent Company [Member]
Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements	N/A

Stock-based Compensation and 31

Stock-based Compensation and Benefits - (Tables)	3 Months Ended
	Mar. 31, 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 2016. The following table summarizes stock option activity for the three months ended March 31, 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 98,389 34.01 Forfeited (4,713) 18.90 Surrendered (432,939) 19.98 Exercised (126,958) 19.98 Outstanding at March 31, 2017 1,719,701 $ 20.56 6.32 $ 20,635 Options exercisable at March 31, 2017 1,292,139 $ 19.88 3.53 $ 16,301 Options expected to vest 1,377,509 $ 20.77 4.31 $ 19,649
Summary of Restricted Stock Activity	The following table summarizes restricted stock activity during the three months ended March 31, 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 Vested (99,967) 13.01 — — Granted 47,199 33.94 49,758 33.22 Forfeited (2,602) 18.94 (932) 18.22 Surrendered (87,494) 13.01 — — Unvested at March 31, 2017 356,407 $ 19.68 134,121 $ 23.78

Income Per Share - (Tables)

Income Per Share - (Tables)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2017 and 2016: For the three months ended March 31, 2017 March 31, 2016 Net income $ 8,258 $ 251 Less: income allocated to participating securities (8) (14) Income allocated to common shareholders $ 8,250 $ 237 Weighted average shares outstanding for basic income per common share 26,801,773 30,117,317 Dilutive effect of equity awards 844,473 986 Dilutive effect of warrants 33,783 — Weighted average shares outstanding for diluted income per common share 27,680,029 30,118,303 Basic income per share $ 0.31 $ 0.01 Diluted income per share $ 0.30 $ 0.01

Derivatives - (Tables)

Derivatives - (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	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 March 31, December 31, Balance Sheet March 31, December 31, Location 2017 2016 Location 2017 2016 Derivatives designated as hedging instruments: Interest rate products Other assets $ 10,420 $ 9,528 Other liabilities $ 1,210 $ 1,381 Total derivatives designated as hedging instruments $ 10,420 $ 9,528 $ 1,210 $ 1,381 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 2,160 $ 1,900 Other liabilities $ 2,191 $ 1,898 Interest rate lock commitments Other assets 149 Other liabilities — 6 Forward contracts Other assets — 138 Other liabilities 20 Forward loan sales agreements Loans held for sale 18 — Loans held for sale — 161 Total derivatives not designated as hedging instruments $ 2,443 $ 2,187 $ 2,266 $ 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 months ended March 31, 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 March 31, hedging relationships derivatives 2017 2016 Interest rate products Other non-interest income $ 1,064 $ (10,901) Total $ 1,064 $ (10,901) Location of gain (loss) Amount of gain (loss) recognized in income on hedged items recognized in income on For the three months ended March 31, Hedged items hedged items 2017 2016 Interest rate products Other non-interest income $ (1,241) $ 10,239 Total $ (1,241) $ 10,239 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 March 31, as hedging instruments derivatives 2017 2016 Interest rate products Other non-interest expense $ (32) $ (93) Interest rate lock commitments Gain on sale of mortgages, net 123 — Forward contracts Gain on sale of mortgages, net (193) — Forward loan sales agreements Gain on sale of mortgages, net 178 — Total $ 76 $ (93)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Total Unfunded Commitments	Total unfunded commitments at March 31, 2017 and December 31, 2016 were as follows: March 31, 2017 December 31, 2016 Commitments to fund loans $ 185,842 $ 149,391 Unfunded commitments under lines of credit 469,943 452,851 Commercial and standby letters of credit 14,325 13,532 Total unfunded commitments $ 670,110 $ 615,774

Fair Value Measurements - (Tabl

Fair Value Measurements - (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2017 and December 31, 2016 in the consolidated statements of financial condition utilizing the hierarchy structure described above: March 31, 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 $ — $ 210,034 $ — $ 210,034 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 708,209 — 708,209 Municipal securities — 2,954 — 2,954 Interest rate swap derivatives — 12,580 — 12,580 Mortgage banking derivatives — — 283 Total assets at fair value $ — $ 933,777 $ 283 $ 934,060 Liabilities: Interest rate swap derivatives $ — $ 3,401 $ — $ 3,401 Mortgage banking derivatives — — 75 Total liabilities at fair value $ — $ 3,401 $ 75 $ 3,476 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 — — 187 Total liabilities at fair value $ — $ 3,279 $ 187 $ 3,466
Table of Changes in Level 3 Financial Instruments	The table below details the changes in level 3 financial instruments during the three months ended March 31, 2017: Mortgage banking derivatives, net Balance at December 31, 2016 $ 100 Gain included in earnings, net 108 Balance at March 31, 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 three months ended March 31, 2017 and 2016: March 31, 2017 Total Losses from fair value changes Other real estate owned $ 15,552 $ 46 Impaired loans 41,103 209 March 31, 2016 Total Losses from fair value changes Other real estate owned $ 21,019 $ 69 Impaired loans 56,257 502
Table of Valuation Techniques and Unobservable Inputs Used in Valuation of Financial Instruments Falling Within Level 3 of Fair Value Hierarchy	These valuations utilize third party appraisal or broker price opinions, and are classified as level 3 due to the significant judgment involved: Fair value at March 31, 2017 Valuation technique Unobservable input Qualitative measures Other available-for-sale securities $ 419 Par value Par value Municipal securities 265 Par value Par value Impaired loans 41,103 Appraised value Appraised values Discount rate 0% - 25%

Fair Value of Financial Instr36

Fair Value of Financial Instruments - (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	The fair value of financial instruments at March 31, 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 March 31, 2017 December 31, 2016 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 218,430 $ 218,430 $ 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 2 210,034 210,034 227,160 227,160 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 708,209 708,209 652,739 652,739 Municipal securities Level 2 2,954 2,954 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 2 247,775 248,940 263,411 264,862 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 65,671 64,330 69,094 67,711 Non-marketable securities Level 2 13,065 13,065 14,949 14,949 Loans receivable Level 3 2,953,655 2,960,288 2,860,921 2,879,860 Loans held-for-sale Level 2 3,547 3,547 24,187 24,187 Accrued interest receivable Level 2 14,332 14,332 12,562 12,562 Interest rate swap derivatives Level 2 12,580 12,580 11,428 11,428 Mortgage banking derivatives Level 3 287 287 LIABILITIES Deposit transaction accounts Level 2 2,782,949 2,782,949 2,696,603 2,696,603 Time deposits Level 2 1,184,994 1,184,994 1,172,046 1,172,046 Securities sold under agreements to repurchase Level 2 91,697 91,697 92,011 92,011 Federal Home Loan Bank advances Level 2 76,780 78,569 38,665 39,324 Accrued interest payable Level 2 6,246 6,246 4,973 4,973 Interest rate swap derivatives Level 2 3,401 3,401 3,279 3,279 Mortgage banking derivatives Level 3 187 187

Basis of Presentation - (Detail

Basis of Presentation - (Details)	3 Months Ended
	Mar. 31, 2017item
Accounting Policies [Abstract]
Number of full service banking offices	90

Investment Securities - (Narrat

Investment Securities - (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)security	Dec. 31, 2016USD ($)security
Investment securities total	$ 1,200,000	$ 1,200,000
Amortized cost	931,962	894,737
Available-for-sale securities	921,881	884,232
Held-to-maturity securities	$ 313,446	$ 332,505
Mortgage-backed securities as percentage of available-for-sale investment portfolio	100.00%	100.00%
Number of securities | security	74	61
Fair value of available-for-sale securities in an unrealized loss position	$ 662,280	$ 627,239
Fair value of available-for-sale investment securities pledged as collateral	$ 272,100	$ 373,700
Estimated weighted average life of the available-for-sale mortgage-backed securities portfolio	3 years 6 months	3 years 4 months 24 days
Life of the available-for-sale mortgage-backed securities portfolio	3 years 2 months 12 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	14	15
Fair value of held-to-maturity securities in an unrealized loss position	$ 80,168	$ 86,937
Held-to-maturity investment securities pledged as collateral	$ 136,700	$ 119,200
Estimated weighted average expected life of the held-to-maturity mortgage-backed securities portfolio	3 years 3 months 18 days	3 years 6 months
Life of the held-to-maturity investment portfolio	3 years 1 month 6 days	3 years 2 months 12 days
Municiapl securities maturing witin one year Member
Amortized cost	$ 2,300
Available-for-sale securities	2,300
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	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 931,962	$ 894,737
Gross unrealized gains	5,753	6,033
Gross unrealized losses	(15,834)	(16,538)
Investment securities available-for-sale (at fair value)	921,881	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	206,779	223,781
Gross unrealized gains	3,798	3,909
Gross unrealized losses	(543)	(530)
Investment securities available-for-sale (at fair value)	210,034	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	721,536	666,616
Gross unrealized gains	1,955	2,124
Gross unrealized losses	(15,282)	(16,001)
Investment securities available-for-sale (at fair value)	708,209	652,739
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,228	3,921
Gross unrealized losses	(9)	(7)
Investment securities available-for-sale (at fair value)	3,219	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 - (Summ40

Investment Securities - (Summary of Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 296,379	$ 241,532
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3,575)	(3,513)
12 months or more, Fair Value	365,901	385,707
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12,259)	(13,025)
Total, Fair Value	662,280	627,239
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(15,834)	(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	92,828	100,898
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(543)	(530)
Total, Fair Value	92,828	100,898
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(543)	(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	200,493	137,576
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3,023)	(2,976)
12 months or more, Fair Value	365,901	385,707
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12,259)	(13,025)
Total, Fair Value	566,394	523,283
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(15,282)	(16,001)
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	3,058	3,058
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(9)	(7)
Total, Fair Value	3,058	3,058
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (9)	$ (7)

Investment Securities - (Summ41

Investment Securities - (Summary of Held-to-maturity Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	$ 313,446	$ 332,505
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,374	1,701
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(1,550)	(1,633)
Fair value	313,270	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	247,775	263,411
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,367	1,685
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(202)	(234)
Fair value	248,940	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	65,671	69,094
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	7	16
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(1,348)	(1,399)
Fair value	$ 64,330	$ 67,711

Investment Securities - (Summ42

Investment Securities - (Summary of Held-to-Maturity Securities, Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Fair Value, Less than 12 months	$ 49,400	$ 54,791
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(549)	(591)
Fair Value, 12 months or more	30,768	32,146
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,001)	(1,042)
Total Fair Value	80,168	86,937
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,550)	(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	23,896	27,799
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(202)	(234)
Total Fair Value	23,896	27,799
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(202)	(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	25,504	26,992
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(347)	(357)
Fair Value, 12 months or more	30,768	32,146
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,001)	(1,042)
Total Fair Value	56,272	59,138
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (1,348)	$ (1,399)

Loans - Narrative Section (Deta

Loans - Narrative Section (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)item	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Fees and cost related to loans	$ 5,400		$ 6,300
Carrying amount of loan investments	2,953,655	$ 2,592,047	2,860,921
Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,641,596		1,560,430
Non Accrual [Member]
Debt Instrument [Line Items]
Recorded investment, non-accrual status	33,700
Increase (decrease) in non-accrual loans	$ 3,000
Percentage increase (decrease) in past due loans	9.80%
Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Loans held-for-sale	$ 13,900		14,400
Carrying amount of loan investments	2,813,591		2,715,069
Allowance for Loan and Lease Losses, Write-offs	210	659
Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,604,661		1,521,150
ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	140,064	$ 179,507	145,852
ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	36,935		39,280
Total Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,953,655		2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,813,591		2,715,069
Recorded investment, non-accrual status	33,716		30,717
Total past due loans	25,576		19,435
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,150,688		1,074,696
Recorded investment, non-accrual status	9,710		8,688
Total past due loans	8,814		8,221
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	89,491		90,273
Recorded investment, non-accrual status	12,697		12,645
Total past due loans	6,621		6,550
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,604,661		1,521,150
Recorded investment, non-accrual status	27,852		25,294
Total past due loans	21,902		16,127
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	236,335		221,544
Recorded investment, non-accrual status	2,786		2,056
Total past due loans	3,933		855
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	294,793		309,068
Recorded investment, non-accrual status	36		66
Total past due loans	94		28
Total Loans [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	140,064		145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	36,935		39,280
Total Loans [Member] | Substandard [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	94,137		116,558
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	51,344		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	24,768		25,636
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	7,357		7,811
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	40,215		45,490
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	4,399		10,137
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,608		2,251
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	42,793		59,634
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	8,230		11,234
Total Loans [Member] | Special Mention [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	59,590		38,590
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	56,173		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	5,009		7,243
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	51,773		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	$ 14,308		9,371
Number of loan relationships | item	2
Increase (decrease) in loan investments	$ 5,400
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Agricultural Sector [Member]
Debt Instrument [Line Items]
Number of loan relationships | item	2
Increase (decrease) in special mention loan investment			23,500
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 1,577		5,895
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	3,417		2,921
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 1,132		$ 610

Loans - Impaired Loans Narrativ

Loans - Impaired Loans Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)itemloan	Dec. 31, 2016USD ($)	Mar. 31, 2016USD ($)
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 2,953,655	$ 2,860,921	$ 2,592,047
Impaired loans	25,500
Recorded investment of impaired loans	$ 41,103	38,282
Number of loans resulting in increase to impaired loans | loan	7
Collective related allowance for loan losses for impaired loans	$ 2,916	2,408
Non Accrual [Member]
Debt Instrument [Line Items]
Investment in impaired loans not covered by loan loss, non-accrual status	33,700
Fair Value Of Collateral Pledged [Member]
Debt Instrument [Line Items]
Impaired loans	30,600
Discounted Cash Flows [Member]
Debt Instrument [Line Items]
Impaired loans	2,600
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	$ 1,641,596	$ 1,560,430
Commercial and Industrial [Member]
Debt Instrument [Line Items]
Number of loans resulting in increase to impaired loans | item	3
Commercial and Industrial [Member] | Non Accrual [Member]
Debt Instrument [Line Items]
Individual loan amount of impaired loans	$ 1,300
Number of loans resulting in increase to impaired loans | item	1
Energy Loans [Member]
Debt Instrument [Line Items]
Number of loans resulting in increase to impaired loans | item	3
Agricultural Sector [Member]
Debt Instrument [Line Items]
Number of loans resulting in increase to impaired loans | item	1
Owner-Occupied [Member] | Non Accrual [Member]
Debt Instrument [Line Items]
Individual loan amount of impaired loans	$ 1,500
Number of loans resulting in increase to impaired loans | item	2

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	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Loans [Line Items]
Total Loans	$ 2,953,655	$ 2,860,921	$ 2,592,047
% of Total	100.00%	100.00%
Commercial Loan [Member]
Loans [Line Items]
Total Loans	$ 1,641,596	$ 1,560,430
% of Total	55.60%	54.60%
Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	$ 537,993	$ 526,792
% of Total	18.20%	18.40%
Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	$ 746,455	$ 744,885
% of Total	25.30%	26.00%
Consumer [Member]
Loans [Line Items]
Total Loans	$ 27,611	$ 28,814
% of Total	0.90%	1.00%
ASC 310-30 [Member]
Loans [Line Items]
Total Loans	$ 140,064	$ 145,852	$ 179,507
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	36,935	39,280
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	86,842	89,150
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	15,470	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	817	898
Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,813,591	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,604,661	1,521,150
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	451,151	437,642
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	730,985	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	$ 26,794	$ 27,916

Loans - (Loan Delinquency) (Det

Loans - (Loan Delinquency) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Loans [Line Items]
Total loans	$ 2,953,655	$ 2,860,921	$ 2,592,047
Commercial Loan [Member]
Loans [Line Items]
Total loans	1,641,596	1,560,430
Commercial Real Estate [Member]
Loans [Line Items]
Total loans	537,993	526,792
Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	746,455	744,885
Consumer [Member]
Loans [Line Items]
Total loans	27,611	28,814
Non ASC 310-30 [Member]
Loans [Line Items]
Total loans	2,813,591	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	1,604,661	1,521,150
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	451,151	437,642
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	730,985	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	26,794	27,916
ASC 310-30 [Member]
Loans [Line Items]
Total loans	140,064	145,852	$ 179,507
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	36,935	39,280
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	86,842	89,150
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	15,470	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	817	898
Total Loans [Member]
Loans [Line Items]
Total loans	2,953,655	2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	25,576	19,435
Current	2,788,015	2,695,634
Total loans	2,813,591	2,715,069
Loans 90 days past due and still accruing	105
Non- accrual	33,716	30,717
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total past due loans	215
Current	115,288	90,314
Total loans	115,503	90,314
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Current	15,577	13,306
Total loans	15,577	13,306
Total Loans [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Current	25,278	24,954
Total loans	25,278	24,954
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	8,814	8,221
Current	1,141,874	1,066,475
Total loans	1,150,688	1,074,696
Non- accrual	9,710	8,688
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	3,933	855
Current	232,402	220,689
Total loans	236,335	221,544
Non- accrual	2,786	2,056
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	94	28
Current	294,699	309,040
Total loans	294,793	309,068
Non- accrual	36	66
Total Loans [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total past due loans	309	28
Current	450,842	437,614
Total loans	451,151	437,642
Non- accrual	36	66
Total Loans [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	2,959	2,991
Current	676,724	672,699
Total loans	679,683	675,690
Non- accrual	4,951	4,522
Total Loans [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	270	198
Current	51,032	52,473
Total loans	51,302	52,671
Loans 90 days past due and still accruing	99
Non- accrual	702	654
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	21,902	16,127
Current	1,582,759	1,505,023
Total loans	1,604,661	1,521,150
Non- accrual	27,852	25,294
Total Loans [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total past due loans	2,534	501
Current	125,613	134,136
Total loans	128,147	134,637
Non- accrual	2,659	1,905
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total past due loans	6,621	6,550
Current	82,870	83,723
Total loans	89,491	90,273
Non- accrual	12,697	12,645
Total Loans [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total past due loans	3,229	3,189
Current	727,756	725,172
Total loans	730,985	728,361
Loans 90 days past due and still accruing	99
Non- accrual	5,653	5,176
Total Loans [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	136	91
Current	26,658	27,825
Total loans	26,794	27,916
Loans 90 days past due and still accruing	6
Non- accrual	175	181
Total Loans [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total loans	140,064	145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total loans	36,935	39,280
Total Loans [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total loans	86,842	89,150
Total Loans [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	15,470	16,524
Total Loans [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total loans	817	898
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	3,964	5,306
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	216	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	1,441	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	68
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	68
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	1,543	888
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	86	115
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	2,148	4,220
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total past due loans	491	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	1,629	1,003
Total Loans [Member] | 30-59 Days Past Due | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	119	83
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	2,065	4,939
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total past due loans	215
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total past due loans	666	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	720	216
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total past due loans	26
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total past due loans	241
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	410	645
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total past due loans	17	61
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total past due loans	1,386	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	427	706
Total Loans [Member] | 60-89 Days Past Due | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total past due loans	11	8
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member]
Loans [Line Items]
Total past due loans	19,547	9,190
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	7,932	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	1,772	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		28
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total past due loans	1,006	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	167	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	18,368	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	2,043
Total Loans [Member] | Greater than 90 Days Past Due | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total past due loans	6,621	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	1,173	$ 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	$ 33,700

Loans - (Credit Exposure for Lo

Loans - (Credit Exposure for Loans as Determined by Company's Internal Risk Rating System) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Loans [Line Items]
Total Loans	$ 2,953,655	$ 2,860,921	$ 2,592,047
Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,641,596	1,560,430
Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	746,455	744,885
Consumer [Member]
Loans [Line Items]
Total Loans	27,611	28,814
Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	537,993	526,792
Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,813,591	2,715,069
Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,604,661	1,521,150
Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	730,985	728,361
Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,794	27,916
Non ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	451,151	437,642
ASC 310-30 [Member]
Loans [Line Items]
Total Loans	140,064	145,852	$ 179,507
ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	36,935	39,280
ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	15,470	16,524
ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	817	898
ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	86,842	89,150
Total Loans [Member]
Loans [Line Items]
Total Loans	2,953,655	2,860,921
Total Loans [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,813,591	2,715,069
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	1,150,688	1,074,696
Total Loans [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	128,147	134,637
Total Loans [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	89,491	90,273
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,604,661	1,521,150
Total Loans [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	451,151	437,642
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total Loans	115,503	90,314
Total Loans [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	15,577	13,306
Total Loans [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans	25,278	24,954
Total Loans [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	236,335	221,544
Total Loans [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	294,793	309,068
Total Loans [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	730,985	728,361
Total Loans [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	679,683	675,690
Total Loans [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	51,302	52,671
Total Loans [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,794	27,916
Total Loans [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	140,064	145,852
Total Loans [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	36,935	39,280
Total Loans [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	15,470	16,524
Total Loans [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	817	898
Total Loans [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	86,842	89,150
Total Loans [Member] | Pass [Member]
Loans [Line Items]
Total Loans	2,794,077	2,696,660
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	2,700,223	2,617,131
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	1,120,420	1,041,326
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	92,000	123,809
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	76,785	77,619
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,506,833	1,444,790
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	443,041	424,274
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Construction [Member]
Loans [Line Items]
Total Loans	115,288	90,099
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	13,064	10,758
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Multifamily [Member]
Loans [Line Items]
Total Loans	23,081	22,495
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	217,628	202,036
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	291,608	300,922
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	723,792	720,398
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	673,769	669,148
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	50,023	51,250
Total Loans [Member] | Pass [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	26,557	27,669
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	93,854	79,529
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	27,573	27,436
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	12,424	12,477
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	629	721
Total Loans [Member] | Pass [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	53,228	38,895
Total Loans [Member] | Special Mention [Member]
Loans [Line Items]
Total Loans	59,590	38,590
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	56,173	35,669
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	5,009	7,243
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	32,456	8,922
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	51,773	25,536
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	4,090	8,681
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	2,513	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	14,308	9,371
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	1,577	5,895
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	253	1,393
Total Loans [Member] | Special Mention [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	253	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	57	59
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	3,417	2,921
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,132	610
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	1,315	1,327
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	16	17
Total Loans [Member] | Special Mention [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	954	967
Total Loans [Member] | Substandard [Member]
Loans [Line Items]
Total Loans	94,137	116,558
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	51,344	56,924
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	24,768	25,636
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Agriculture [Member]
Loans [Line Items]
Total Loans	3,691	1,906
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	7,357	7,811
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	40,215	45,490
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	4,020	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	2,197	2,221
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Owner-Occupied [Member]
Loans [Line Items]
Total Loans	4,399	10,137
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	1,608	2,251
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	6,929	6,559
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	5,650	5,316
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Junior lien
Loans [Line Items]
Total Loans	1,279	1,243
Total Loans [Member] | Substandard [Member] | Non ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	180	188
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member]
Loans [Line Items]
Total Loans	42,793	59,634
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	8,230	11,234
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	1,731	2,720
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Consumer [Member]
Loans [Line Items]
Total Loans	172	160
Total Loans [Member] | Substandard [Member] | ASC 310-30 [Member] | Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	32,660	45,520
Total Loans [Member] | Doubtful [Member]
Loans [Line Items]
Total Loans	5,851	9,113
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member]
Loans [Line Items]
Total Loans	5,851	5,345
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	491	491
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Energy Loans [Member]
Loans [Line Items]
Total Loans	5,349	4,843
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Commercial Loan [Member]
Loans [Line Items]
Total Loans	5,840	5,334
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	11	11
Total Loans [Member] | Doubtful [Member] | Non ASC 310-30 [Member] | Senior lien
Loans [Line Items]
Total Loans	$ 11	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	Mar. 31, 2017	Dec. 31, 2016
Loans [Line Items]
Unpaid principal balance, Total	$ 59,541	$ 56,787
Recorded Investment In Acquired Impaired Loans	41,103	38,282
Loans and Leases Receivable, Allowance	2,916	2,408
Commercial and Industrial [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	9,676	8,671
Recorded investment with no related allowance recorded	8,507	7,495
Unpaid principal balance of impaired loans with an allowance recorded	3,476	3,495
Recorded investment of impaired loans with an allowance recorded	3,443	3,464
Allowance for loan losses allocated with an allowance recorded	491	492
Agriculture [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	2,798	2,044
Recorded investment with no related allowance recorded	2,740	1,987
Energy Loans [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	17,157	17,142
Recorded investment with no related allowance recorded	6,085	6,105
Unpaid principal balance of impaired loans with an allowance recorded	11,288	11,216
Recorded investment of impaired loans with an allowance recorded	6,621	6,548
Allowance for loan losses allocated with an allowance recorded	2,372	1,866
Commercial Loan [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	33,658	31,207
Recorded investment with no related allowance recorded	21,209	18,784
Unpaid principal balance of impaired loans with an allowance recorded	15,696	15,668
Recorded investment of impaired loans with an allowance recorded	10,737	10,654
Allowance for loan losses allocated with an allowance recorded	2,866	2,360
Multifamily [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	32	33
Recorded investment with no related allowance recorded	32	33
Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	4,027	3,350
Recorded investment with no related allowance recorded	3,877	3,197
Unpaid principal balance of impaired loans with an allowance recorded	932	957
Recorded investment of impaired loans with an allowance recorded	673	642
Allowance for loan losses allocated with an allowance recorded	3	2
Non Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	373	394
Recorded investment with no related allowance recorded	322	343
Unpaid principal balance of impaired loans with an allowance recorded	226	261
Recorded investment of impaired loans with an allowance recorded	220	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	405	427
Recorded investment with no related allowance recorded	354	376
Unpaid principal balance of impaired loans with an allowance recorded	226	261
Recorded investment of impaired loans with an allowance recorded	220	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	1,100	1,551
Recorded investment with no related allowance recorded	1,042	1,426
Unpaid principal balance of impaired loans with an allowance recorded	6,418	5,646
Recorded investment of impaired loans with an allowance recorded	5,748	5,016
Allowance for loan losses allocated with an allowance recorded	33	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	1,854	1,781
Recorded investment of impaired loans with an allowance recorded	1,613	1,532
Allowance for loan losses allocated with an allowance recorded	14	14
Residential Real Estate Segment [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	1,100	1,605
Recorded investment with no related allowance recorded	1,042	1,477
Unpaid principal balance of impaired loans with an allowance recorded	8,272	7,427
Recorded investment of impaired loans with an allowance recorded	7,361	6,548
Allowance for loan losses allocated with an allowance recorded	47	45
Consumer [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	4	4
Recorded investment with no related allowance recorded	4	4
Unpaid principal balance of impaired loans with an allowance recorded	180	188
Recorded investment of impaired loans with an allowance recorded	176	184
Allowance for loan losses allocated with an allowance recorded	2	2
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	35,167	33,243
Recorded investment with no related allowance recorded	22,609	20,641
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Unpaid principal balance of impaired loans with an allowance recorded	24,374	23,544
Recorded investment of impaired loans with an allowance recorded	18,494	17,641
Allowance for loan losses allocated with an allowance recorded	$ 2,916	$ 2,408

Loans - (Impaired Loans - Avera

Loans - (Impaired Loans - Average Recorded Investment and Interest Income Recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Loans [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 40,766	$ 56,447
Impaired Financing Receivable, Interest Income, Cash Basis Method	119	153
Commercial and Industrial [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	8,095	4,919
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	48	68
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,445	4,479
Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,885	1,912
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	18	29
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	678	889
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	5	4
Agriculture [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,588	1,758
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	156	180
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	1	1
Energy Loans [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,098
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,589	32,068
Commercial Loan [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	20,666	8,589
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	66	97
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	10,868	37,616
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	6	5
Commercial Construction [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		189
Multifamily [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	32	36
Non Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	329	719
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	7
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	223	833
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	3	15
Total Commercial Real Estate [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	329	908
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	7
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	255	869
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	3	15
Senior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,047	1,376
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	3	4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,791	4,799
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	21	19
Junior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		289
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,625	1,937
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	13	13
Residential Real Estate Segment [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,047	1,665
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	3	4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	7,416	6,736
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	34	32
Consumer [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	181	64
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	22,046	11,162
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	76	101
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	18,720	45,285
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	$ 43	$ 52

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring and Loans Accounted for Under ASC Topic 310-30 Narratives (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)item	Mar. 31, 2016loan
Troubled Debt Restructurings [Member]
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms	1	0
Number of restructured loans | item	5
Recorded investment | $	$ 6.9
Agriculture and Consumer loans [Member]
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms | item	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment | $	$ 1.6

Loans - (Additional Informati51

Loans - (Additional Information Related to Accruing TDR's) (Details) - Accruing TDR [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Loans [Line Items]
Recorded investment	$ 5,589	$ 5,767
Average year-to- date recorded investment	5,625	6,017
Unpaid principal balance	5,847	6,030
Unfunded commitments to fund TDRs	102	102
Commercial [Member]
Loans [Line Items]
Recorded investment	3,273	3,302
Average year-to- date recorded investment	3,284	3,440
Unpaid principal balance	3,430	3,464
Unfunded commitments to fund TDRs	100	100
Commercial Real Estate [Member]
Loans [Line Items]
Recorded investment	512	538
Average year-to- date recorded investment	521	572
Unpaid principal balance	564	590
Residential Real Estate Segment [Member]
Loans [Line Items]
Recorded investment	1,799	1,920
Average year-to- date recorded investment	1,814	1,996
Unpaid principal balance	1,848	1,969
Unfunded commitments to fund TDRs	2	2
Consumer [Member]
Loans [Line Items]
Recorded investment	5	7
Average year-to- date recorded investment	6	9
Unpaid principal balance	$ 5	$ 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	Mar. 31, 2017	Dec. 31, 2016
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 25,079	$ 16,708
Commercial [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	23,577	15,265
Residential Real Estate Segment [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	1,368	1,301
Consumer [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 134	$ 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	3 Months Ended
	Mar. 31, 2017	Mar. 31, 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	5,385	3,184
Reclassification to non-accretable difference	(399)	(2,077)
Accretion	(5,871)	(10,294)
Accretable yield ending balance	$ 59,591	$ 75,007

Loans - (Composition of Net Boo

Loans - (Composition of Net Book Value for Loans Accounted for under ASC Topic 310-30) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Contractual cash flows	$ 525,952	$ 537,611
Non-accretable difference	(326,297)	(331,283)
Accretable yield	(59,591)	(60,476)
Loans accounted for under ASC 310-30	$ 140,064	$ 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
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 29,174	$ 27,119
Provision (recoupment) for loan losses	1,795	10,619
Ending balance	30,850	37,166
Ending allowance balance individually evaluated for impairment			$ 2,916
Carrying amount of loan investments			2,953,655	$ 2,860,921	$ 2,592,047
Loans	29,174	27,119	30,850	29,174	37,166
Total Loans			2,953,655	2,860,921	2,592,047
Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	28,949	26,042
Charge-offs	(210)	(659)
Recoveries	91	87
Provision (recoupment) for loan losses	1,800	11,481
Ending balance	30,630	36,951
Ending allowance balance individually evaluated for impairment					13,968
Ending allowance balance collectively evaluated for impairment			27,714		22,983
Loans individually evaluated for impairment			41,103		54,740
Loans collectively evaluated for impairment			2,772,488		2,357,800
Carrying amount of loan investments			2,813,591	2,715,069
Loans	28,949	26,042	30,630	28,949	36,951
Total Loans			2,813,591	2,715,069
ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	225	1,077
Provision (recoupment) for loan losses	(5)	(862)
Ending balance	220	215
Carrying amount of loan investments			140,064	145,852	179,507
Loans	225	1,077	220	225	215
Total Loans			140,064	145,852	179,507
ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	220
Loans	220		220
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	18,821	17,261
Ending balance	20,539	28,684
Ending allowance balance individually evaluated for impairment			2,866
Carrying amount of loan investments			1,641,596		1,423,084
Loans	18,821	17,261	20,539	18,821	28,684
Total Loans			1,641,596		1,423,084
Commercial Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	18,821	16,473
Charge-offs	(20)	(106)
Recoveries	11	9
Provision (recoupment) for loan losses	1,727	12,234
Ending balance	20,539	28,610
Ending allowance balance individually evaluated for impairment					13,929
Ending allowance balance collectively evaluated for impairment			17,673		14,681
Loans individually evaluated for impairment			31,946		45,938
Loans collectively evaluated for impairment			1,572,715		1,327,518
Loans	18,821	16,473	20,539	18,821	28,610
Commercial Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		788
Provision (recoupment) for loan losses		(714)
Ending balance		74
Carrying amount of loan investments			36,935		49,628
Loans		788			74
Total Loans			36,935		49,628
Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,387	5,281
Ending balance	4,216	4,325
Ending allowance balance individually evaluated for impairment			47
Carrying amount of loan investments			746,455		694,385
Loans	4,387	5,281	4,216	4,387	4,325
Total Loans			746,455		694,385
Residential Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,387	5,245
Charge-offs	(8)	(57)
Recoveries	3	7
Provision (recoupment) for loan losses	(166)	(906)
Ending balance	4,216	4,289
Ending allowance balance individually evaluated for impairment					35
Ending allowance balance collectively evaluated for impairment			4,169		4,254
Loans individually evaluated for impairment			8,403		7,335
Loans collectively evaluated for impairment			722,582		667,013
Loans	4,387	5,245	4,216	4,387	4,289
Residential Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		36
Ending balance		36
Carrying amount of loan investments			15,470		20,037
Loans		36			36
Total Loans			15,470		20,037
Consumer Loan [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	324	411
Ending balance	280	296
Ending allowance balance individually evaluated for impairment			2
Carrying amount of loan investments			27,611		28,263
Loans	324	411	280	324	296
Total Loans			27,611		28,263
Consumer Loan [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	319	385
Charge-offs	(182)	(220)
Recoveries	67	62
Provision (recoupment) for loan losses	72	22
Ending balance	276	249
Ending allowance balance individually evaluated for impairment					1
Ending allowance balance collectively evaluated for impairment			274		248
Loans individually evaluated for impairment			180		62
Loans collectively evaluated for impairment			26,614		26,362
Loans	319	385	276	319	249
Consumer Loan [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5	26
Provision (recoupment) for loan losses	(1)	21
Ending balance	4	47
Carrying amount of loan investments			817		1,839
Loans	5	26	4	5	47
Total Loans			817		1,839
Consumer Loan [Member] | ASC 310-30 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	4
Loans	4		4
Commercial Real Estate Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,642	4,166
Ending balance	5,815	3,861
Ending allowance balance individually evaluated for impairment			1
Carrying amount of loan investments			537,993		446,315
Loans	5,642	4,166	5,815	5,642	3,861
Total Loans			537,993		446,315
Commercial Real Estate Portfolio Segment [Member] | Non ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,422	3,939
Charge-offs		(276)
Recoveries	10	9
Provision (recoupment) for loan losses	167	131
Ending balance	5,599	3,803
Ending allowance balance individually evaluated for impairment					3
Ending allowance balance collectively evaluated for impairment			5,598		3,800
Loans individually evaluated for impairment			574		1,405
Loans collectively evaluated for impairment			450,577		336,907
Loans	5,422	3,939	5,599	5,422	3,803
Commercial Real Estate Portfolio Segment [Member] | ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	220	227
Provision (recoupment) for loan losses	(4)	(169)
Ending balance	216	58
Carrying amount of loan investments			86,842		108,003
Loans	220	$ 227	216	$ 220	58
Total Loans			86,842		$ 108,003
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	216
Loans	$ 216		$ 216

Allowance for Loan Losses - (Na

Allowance for Loan Losses - (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)loan
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses	$ 1,795	$ 10,619
Impaired loans	$ 25,500
Number of energy loans change in non-accrual	1
Impaired Energy Loans [Member]
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses		10,700
Impaired loans	$ 500
Non ASC 310-30 [Member]
Allowance For Loan And Lease Losses [Line Items]
Charge-offs, net	100	600
Provision (recoupment) for loan losses	1,800	11,481
Energy Specific Reserves		$ 9,100
Number of Energy Specific Reserves | loan		4
ASC 310-30 [Member]
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses	$ (5)	$ (862)

Other Real Estate Owned - (Summ

Other Real Estate Owned - (Summary of Activity in OREO Balances) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Real Estate [Roll Forward]
Balance	$ 15,662	$ 20,814
Transfers from loan portfolio, at fair value	578	474
Impairments	(46)	(69)
Proceeds From Sale Of Other Real Estate Owned, Net	(642)	(200)
Balance	$ 15,552	$ 21,019

Other Real Estate Owned - (Narr

Other Real Estate Owned - (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		15 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017
FDIC Loss-Sharing Related
Minority interests in OREO which are held by outside banks			$ 1,600
Gain on sale of OREO, net	$ 112	$ 432

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 30,200		$ 7,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Earliest	2,018
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Last	2,020
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 830,200
FHLB advances	75,000		25,000
Interest expense related to FHLB advances	$ 197	$ 166
Minimum
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate range of FHLB advances	1.31%
Maximum
Assets Sold under Agreements to Repurchase [Line Items]
Interest rate range of FHLB advances	2.33%
Federal Home Loan Bank of Des Moines [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 27,200		28,800
U.S. Treasury Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 108,500		$ 99,100

Borrowings (Federal Home Loan B

Borrowings (Federal Home Loan Bank, Advances) (Details) $ in Millions	Mar. 31, 2017USD ($)
Disclosure of Repurchase Agreements [Abstract]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Earliest	2,018
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 830.2

Regulatory Capital - (Capital R

Regulatory Capital - (Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements) (Details) - USD ($) $ in Thousands	1 Months Ended
	Feb. 29, 2016	Mar. 31, 2017	Dec. 31, 2016
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage Ratio		10.20%	10.40%
Common equity risk-based ratio		13.50%	14.20%
Risk-based capital Ratio		13.50%	14.20%
Total risk-based capital Ratio		14.40%	15.00%
Leverage Amount		$ 463,885	$ 470,259
Common equity risk-based amount		463,885	470,259
Risk-based capital amount		463,885	470,259
Total risk-based capital Amount		$ 495,061	$ 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		$ 181,637	$ 181,019
Required to be considered adequately capitalized common equity capital amount		204,341	203,647
Required to be considered adequately capitalized risk-based capital Amount		205,828	199,467
Required to be considered adequately capitalized Total risk-based capital Amount		$ 274,438	$ 265,955
NBH Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Permanent reduction in capital	$ 140,000
Cash distribution from reduction in capital	$ 140,000
Leverage Ratio		8.40%	8.60%
Common equity risk-based ratio		11.10%	11.80%
Risk-based capital Ratio		11.10%	11.80%
Total risk-based capital Ratio		12.00%	12.70%
Leverage Amount		$ 379,484	$ 389,189
Common equity risk-based amount		379,484	389,189
Risk-based capital amount		379,484	389,189
Total risk-based capital Amount		$ 410,660	$ 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		$ 203,501	$ 202,903
Required to be considered well capitalized common equity capital amount		293,946	293,082
Required to be considered well capitalized risk-based capital Amount		272,814	264,596
Required to be considered well capitalized Total risk-based capital Amount		$ 341,017	$ 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		$ 180,890	$ 180,358
Required to be considered adequately capitalized common equity capital amount		203,501	202,903
Required to be considered adequately capitalized risk-based capital Amount		204,610	198,447
Required to be considered adequately capitalized Total risk-based capital Amount		$ 272,814	$ 264,596

Stock-based Compensation and Em

Stock-based Compensation and Employee Benefits - (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Rights, Percentage	33.30%
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 200,000	$ 200,000
Unrecognized compensation expense	$ 1,000,000
Unrecognized compensation cost, weighted-average period, years	2 years 7 months 6 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	47,199
Weighted average grant-date fair value, Granted (in dollars per share)	$ 33.94
Stock based compensation expense	$ 700,000
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
Unrecognized compensation cost, weighted-average period, years	2 years 1 month 6 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]
Unrecognized compensation expense	$ 2,300,000
Unrecognized compensation cost, weighted-average period, years	2 years 6 months
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
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
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	3 Months Ended	12 Months Ended
	Mar. 31, 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	98,389
Forfeited, Options	(4,713)
Surrendered, Options	(432,939)
Exercised, Options	(126,958)
Outstanding Options, ending	1,719,701	2,185,922
Options fully vested and exercisable at end of period, Options	1,292,139
Options expected to vest, Options	1,377,509
Outstanding, Weighted average exercise price, beginning	$ 19.81
Granted, Weighted average exercise price	34.01
Forfeited, Weighted average exercise price	18.90
Surrendered, Weighted average exercise price	19.98
Exercised, Weighted average exercise price	19.98
Outstanding, Weighted average exercised price, ending	20.56	$ 19.81
Options fully vested and exercisable at end of period, Weighted average exercise price	19.88
Options expected to vest, Weighted average exercise price	$ 20.77
Outstanding, Weighted average remaining contractual term in years	6 years 3 months 26 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 6 months 11 days
Options expected to vest, Weighted average remaining contractual term in years	4 years 3 months 22 days
Outstanding, Aggregate intrinsic value, beginning	$ 7,753
Outstanding, Outstanding, Aggregate intrinsic value, beginning	20,635	$ 7,753
Aggregate intrinsic Value of Options fully vested and exercisable at end of period	16,301
Options expected to vest, Aggregate Intrinsic Value	$ 19,649

Stock-based Compensation and 64

Stock-based Compensation and Benefits - (Summary of Restricted Stock Activity) (Details)	3 Months Ended
	Mar. 31, 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	(99,967)
Unvested Restricted shares, Granted (in shares) | shares	47,199
Unvested Restricted shares, Forfeited (in shares) | shares	(2,602)
Unvested Restricted shares, Surrendered (in shares) | shares	(87,494)
Unvested Restricted shares, Ending (in shares) | shares	356,407
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	13.01
Weighted average grant-date fair value, Granted (in dollars per share) | $ / shares	33.94
Weighted average grant-date fair value, Forfeited (in dollars per share) | $ / shares	18.94
Weighted average grant-date fair value, Fair Value, Surrendered (in dollars per share) | $ / shares	13.01
Weighted average grant-date fair value, Ending (in dollars per share) | $ / shares	$ 19.68
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	(932)
Unvested Restricted shares, Ending (in shares) | shares	134,121
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	18.22
Weighted average grant-date fair value, Ending (in dollars per share) | $ / shares	$ 23.78

Warrants (Narrative) (Details)

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

Common Stock - (Narrative) (Det

Common Stock - (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Aug. 05, 2016
Schedule Of Common Stock [Line Items]
Shares repurchased (shares)		1,117,274
Repurchase of shares		$ 21,941
Remaining authorized amount	$ 12,600
Shares outstanding	26,715,532		26,386,583
Common Class A [Member]
Schedule Of Common Stock [Line Items]
Shares outstanding	26,715,532		26,386,583
Restricted issued but not yet vested, shares	356,407		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
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Shares outstanding	26,715,532	29,252,419
Outstanding stock options to purchase common stock	1,719,701	2,712,102	2,185,922
Outstanding stock options to purchase common stock, per share	$ 20.56	$ 19.81	$ 19.81
Warrants granted, exercise price per share	$ 20	$ 20	$ 20
Restricted shares outstanding	356,407	1,000,275
Warrant [Member]
Dilutive Convertible Securities	33,783

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
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 8,258	$ 251
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(8)	(14)
Income available to common stockholders (numerator)	$ 8,250	$ 237
Weighted average common shares outstanding (denominator)	26,801,773	30,117,317
Weighted average shares outstanding for diluted earnings per common share	27,680,029	30,118,303
Income per share-basic (in dollars per share)	$ 0.31	$ 0.01
Income per share-diluted (in dollars per share)	$ 0.30	$ 0.01
Equity Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Convertible Securities	844,473	986
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Convertible Securities	33,783

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax rate	(17.70%)	43.00%

Derivatives - (FV of Derivative

Derivatives - (FV of Derivatives on the Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	$ 10,420	$ 9,528
Liability derivatives fair value	1,210	1,381
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,443	2,187
Liability derivatives fair value	2,266	2,085
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	17,400
Other assets [Member] | Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	10,420	9,528
Other assets [Member] | Interest rate products [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,160	1,900
Other assets [Member] | Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	265	149
Other assets [Member] | Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value		138
Other assets [Member] | Forward loan sales agreement | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	18
Other liabilities [Member] | Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	1,210	1,381
Other liabilities [Member] | Interest rate products [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	2,191	1,898
Other liabilities [Member] | Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value		6
Other liabilities [Member] | Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	$ 75	20
Other liabilities [Member] | Forward loan sales agreement | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value		$ 161

Derivatives - (Narrative) (Deta

Derivatives - (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)item	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)item
Derivative [Line Items]
Number of interest rate lock commitments | item			78
Number of forward loan sale commitments | item			70
Number of forward contracts | item			11
Notional amount | $	$ 11,300		$ 11,800
Gain (loss) related to hedge ineffectiveness | $	(177)	$ (662)
Termination value of derivatives in net liability position | $	600		1,300
Collateral Already Posted, Aggregate Fair Value | $	$ 900		800
Number OF Interest Rate Loack Commitments Member
Derivative [Line Items]
Number of interest rate lock commitments | item	91
Interest Rate Lock Commitments Notional Amount Member
Derivative [Line Items]
Notional amount | $			13,800
Forward Loan Sales Commitments Notional Amount Member
Derivative [Line Items]
Notional amount | $	$ 1,300		$ 12,000
Designated as Hedging Instrument [Member] | Interest rate swap derivatives [Member]
Derivative [Line Items]
Number of interest rate swaps held | item	49		42
Notional amount | $	$ 340,100		$ 313,000
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Number of forward loan sale commitments | item	11
Number of forward contracts | item	10
Not Designated as Hedging Instrument [Member] | Interest rate swap derivatives [Member]
Derivative [Line Items]
Number of interest rate swaps held | item	38		36
Notional amount | $	$ 143,700		$ 132,600

Derivatives - (Derivatives on t

Derivatives - (Derivatives on the Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	$ 76	$ (93)
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	1,064	(10,901)
Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on hedged items	(1,241)	10,239
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	(1,241)	10,239
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	(32)	(93)
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	1,064	$ (10,901)
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	(193)
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	123
Forward loan sales agreement | Not Designated as Hedging Instrument [Member] | Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivatives	$ 178

Commitments and Contingencies73

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Commitment And Contingencies [Line Items]
Loan commitments	$ 655.8	$ 602.2
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Standby letters of credit	$ 14.3	$ 13.5

Commitments and Contingencies74

Commitments and Contingencies (Schedule of Total Unfunded Commitments) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 670,110	$ 615,774
Commitments to fund loans [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	185,842	149,391
Unfunded Commitment Line Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	469,943	452,851
Commercial And Standby Letters Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 14,325	$ 13,532

Fair Value Measurements - (Ta75

Fair Value Measurements - (Tables of Financial Instruments Measured At Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	$ 934,060	$ 895,262
Total liabilities at fair value	3,476	3,466
Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,954	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	210,034	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	708,209	652,739
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	933,777	894,975
Total liabilities at fair value	3,401	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	2,954	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	210,034	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	708,209	652,739
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	283	287
Total liabilities at fair value	75	187
Level 3 [Member] | Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	265
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	12,580	11,428
Total liabilities at fair value	3,401	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	12,580	11,428
Total liabilities at fair value	3,401	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	283
Total liabilities at fair value	75
Mortgage banking derivatives | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		287
Total liabilities at fair value		$ 187
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	283
Total liabilities at fair value	$ 75

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	3 Months Ended
	Mar. 31, 2017USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 100
Realized gain (loss) included in earnings—net mortgage banking derivatives	108
Ending Balance	$ 208

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)loan	Mar. 31, 2016USD ($)	Dec. 31, 2016loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of Loans measured | loan	3
Nonrecurring Loans Carrying value	$ 10,600
Nonrecurring Loans Reserves	2,900	$ 14,100
Impairment on other real estate owned	$ 46	$ 69
Additions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of Loans measured | loan			7

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	3 Months Ended
	Mar. 31, 2017	Mar. 31, 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	$ 15,552	$ 21,019
Losses From Fair Value Changes	46	69
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	41,103	56,257
Losses From Fair Value Changes	$ 209	$ 502

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	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets at fair value	$ 934,060	$ 895,262
Other Securities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets at fair value	419
Impaired loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets at fair value	$ 41,103
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	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
ASSETS:
Cash and cash equivalents	$ 218,430	$ 152,736	$ 193,624	$ 166,092
Investment securities available-for-sale (at fair value)	921,881	884,232
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	313,446	332,505
Non-marketable securities	13,065	14,949
Loans held-for-sale	3,547	24,187
LIABILITIES:
Time deposits	1,184,994	1,172,046
Securities sold under agreements to repurchase	91,697	92,011
Federal Home Loan Bank advances	76,780	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)	210,034	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	247,775	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)	708,209	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	65,671	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)	3,219	3,914
Carrying Amount [Member] | Level 1 [Member]
ASSETS:
Cash and cash equivalents	218,430	152,736
Carrying Amount [Member] | Level 2 [Member]
ASSETS:
Non-marketable securities	13,065	14,949
Loans held-for-sale	3,547	24,187
Accrued interest receivable	14,332	12,562
LIABILITIES:
Deposit transaction accounts	2,782,949	2,696,603
Time deposits	1,184,994	1,172,046
Securities sold under agreements to repurchase	91,697	92,011
Federal Home Loan Bank advances	76,780	38,665
Accrued interest payable	6,246	4,973
Carrying Amount [Member] | Level 3 [Member]
ASSETS:
Loans receivable, net	2,953,655	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)	210,034	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	247,775	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)	708,209	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	65,671	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	2,954	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	218,430	152,736
Estimated Fair Value [Member] | Level 2 [Member]
ASSETS:
Non-marketable securities	13,065	14,949
Loans held-for-sale	3,547	24,187
Accrued interest receivable	14,332	12,562
LIABILITIES:
Deposit transaction accounts	2,782,949	2,696,603
Time deposits	1,184,994	1,172,046
Securities sold under agreements to repurchase	91,697	92,011
Federal Home Loan Bank advances	78,569	39,324
Accrued interest payable	6,246	4,973
Estimated Fair Value [Member] | Level 3 [Member]
ASSETS:
Loans receivable, net	2,960,288	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)	210,034	227,160
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	248,940	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)	708,209	652,739
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	64,330	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	2,954	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	12,580	11,428
LIABILITIES:
Derivative liability	3,401	3,279
Interest rate swap derivatives [Member] | Estimated Fair Value [Member] | Level 2 [Member]
ASSETS:
Derivative asset	12,580	11,428
LIABILITIES:
Derivative liability	3,401	3,279
Mortgage banking derivatives | Carrying Amount [Member] | Level 3 [Member]
ASSETS:
Derivative asset	283	287
LIABILITIES:
Derivative liability	75	187
Mortgage banking derivatives | Estimated Fair Value [Member] | Level 3 [Member]
ASSETS:
Derivative asset	283	287
LIABILITIES:
Derivative liability	$ 75	$ 187

Fair Value of Financial Instr81

Fair Value of Financial Instruments - (Additional Information) (Details)	3 Months Ended
	Mar. 31, 2017
Fair Value Of Financial Instruments [Abstract]
Residential mortgage loans held for sale period	45 days

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Deposits		$ 3,967,943	$ 3,868,649
Non ASC 310-30 [Member]
Subsequent Event [Line Items]
Loans held-for-sale		13,900	$ 14,400
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Subsequent Event [Line Items]
Carrying value of building sold		1,600
Deposits		100,500
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Non ASC 310-30 [Member]
Subsequent Event [Line Items]
Loans held-for-sale		$ 13,900
Subsequent Event | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Subsequent Event [Line Items]
Gain (Loss) on Disposition of Assets for Financial Service Operations	$ 3,000