National Bank (NBHC) 10-Q6 Nov 192019 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2019	Nov. 04, 2019
Document Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2019
Entity File Number	001-35654
Entity Registrant Name	NATIONAL BANK HOLDINGS CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0563799
Entity Address, Address Line One	7800 East Orchard, Suite 300
Entity Address, City or Town	Greenwood Village
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80111
City Area Code	303
Local Phone Number	892-8715
Title of 12(b) Security	Class A Common Stock
Trading Symbol	NBHC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		31,171,126
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001475841
Amendment Flag	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 116,419	$ 109,056
Interest bearing bank deposits	500	500
Cash and cash equivalents	116,919	109,556
Investment securities available-for-sale (at fair value)	661,129	791,102
Investment securities held-to-maturity (fair value of $206,402 and $230,926 at September 30, 2019 and December 31, 2018, respectively)	189,982	235,398
Non-marketable securities	27,277	27,555
Loans	4,401,917	4,092,308
Allowance for loan losses	(38,710)	(35,692)
Loans, net	4,363,207	4,056,616
Loans held-for-sale	204,602	48,120
Other real estate owned	7,904	10,596
Premises and equipment, net	110,692	109,986
Goodwill	115,027	115,027
Intangible assets, net	11,578	13,470
Other assets	181,733	159,240
Total assets	5,990,050	5,676,666
Liabilities:
Non-interest bearing demand deposits	1,237,189	1,072,029
Interest bearing demand deposits	681,113	688,255
Savings and money market	1,748,257	1,694,808
Time deposits	1,067,301	1,080,529
Total deposits	4,733,860	4,535,621
Securities sold under agreements to repurchase	62,735	66,047
Federal Home Loan Bank advances	303,897	301,660
Other liabilities	136,232	78,332
Total liabilities	5,236,724	4,981,660
Shareholders' equity:
Common stock, par value $0.01 per share: 400,000,000 shares authorized; 51,487,907 and 51,498,016 shares issued; 31,139,044 and 30,769,063 shares outstanding at June 30, 2019 and December 31, 2018, respectively	515	515
Additional paid-in capital	1,007,628	1,014,399
Retained earnings	150,866	106,990
Treasury stock of 20,210,348 and 20,582,459 shares at June 30, 2019 and December 31, 2018, respectively, at cost	(408,770)	(415,623)
Accumulated other comprehensive income (loss), net of tax	3,087	(11,275)
Total shareholders' equity	753,326	695,006
Total liabilities and shareholders' equity	$ 5,990,050	$ 5,676,666

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Investment securities held-to-maturity, fair value	$ 190,651	$ 230,926
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	51,487,907	51,498,016
Common Stock, shares outstanding	31,169,086	30,769,063
Treasury stock, shares	20,182,739	20,582,459

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income:
Interest and fees on loans	$ 55,708	$ 49,181	$ 164,478	$ 141,994
Interest and dividends on investment securities	5,080	6,289	16,627	19,625
Dividends on non-marketable securities	417	268	1,299	761
Interest on interest-bearing bank deposits	167	171	581	1,231
Total interest and dividend income	61,372	55,909	182,985	163,611
Interest expense:
Interest on deposits	7,974	5,451	22,238	14,950
Interest on borrowings	1,613	686	5,305	1,856
Total interest expense	9,587	6,137	27,543	16,806
Net interest income before provision for loan losses	51,785	49,772	155,442	146,805
Provision for loan losses	5,690	807	10,463	2,721
Net interest income after provision for loan losses	46,095	48,965	144,979	144,084
Non-interest income:
Mortgage banking income	14,702	7,819	32,037	24,701
Bank-owned life insurance income	431	463	1,276	1,361
Other non-interest income	1,230	1,429	4,585	4,290
OREO-related income	27	72	147	913
Total non-interest income	24,759	18,061	62,470	55,458
Non-interest expense:
Salaries and benefits	33,522	28,127	92,079	87,910
Occupancy and equipment	6,825	6,925	20,428	22,070
Telecommunications and data processing	2,133	2,186	6,547	8,653
Marketing and business development	985	1,128	2,811	3,589
FDIC deposit insurance	58	401	1,049	1,911
Bank card expenses	1,288	1,258	3,521	4,491
Professional fees	743	1,117	2,598	4,686
Other non-interest expense	3,856	2,564	9,468	9,515
Problem asset workout	602	665	2,450	2,221
(Gain) loss on OREO sales, net	(6,514)	(450)	(7,200)	(386)
Core deposit intangible asset amortization	295	511	887	1,817
Total non-interest expense	43,793	44,432	134,638	146,477
Income before income taxes	27,061	22,594	72,811	53,065
Income tax expense	5,419	4,354	11,965	8,849
Net income	$ 21,642	$ 18,240	$ 60,846	$ 44,216
Income per share-basic (in dollars per share)	$ 0.69	$ 0.59	$ 1.95	$ 1.44
Income per share-diluted (in dollars per share)	$ 0.69	$ 0.58	$ 1.93	$ 1.41
Weighted average number of common shares outstanding:
Basic (Shares)	31,281,970	30,869,683	31,133,982	30,700,977
Diluted (Shares)	31,508,999	31,540,716	31,537,334	31,388,786
Service Charges and other fees
Non-interest income:
Non-interest income	$ 4,617	$ 4,592	$ 13,479	$ 13,473
Bank card fees
Non-interest income:
Non-interest income	$ 3,752	$ 3,686	$ 10,946	$ 10,720

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 21,642	$ 18,240	$ 60,846	$ 44,216
Securities available-for-sale:
Net unrealized gains (losses) arising during the period, net of tax (expense) benefit of ($2,480) and $688 for the three months ended June 30, 2019 and 2018, respectively; and net of tax (expense) benefit of ($4,187) and $2,990 for the six months ended June 30, 2019 and 2018, respectively	1,828	(2,499)	15,150	(11,471)
Less: amortization of net unrealized holding gains to income, net of tax benefit of $81 and $103 for the three months ended June 30, 2019 and 2018, respectively; and net of tax benefit of $171 and $988 for the six months ended June 30, 2019 and 2018, respectively	(247)	(308)	(788)	(1,022)
Other comprehensive income (loss)	1,581	(2,807)	14,362	(12,493)
Comprehensive income	$ 23,223	$ 15,433	$ 75,208	$ 31,723

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Tax (expense) benefit on net unrealized gains arising during the period	$ (574)	$ 786	$ (4,760)	$ 3,776
Tax (expense) benefit of amortization of net unrealized holding gains to income	$ 78	$ 97	$ 249	$ 270

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 (loss) income, net [Member]	Total
Balance in the beginning at Dec. 31, 2017	$ 515	$ 970,668	$ 60,795	$ (493,329)	$ (6,242)	$ 532,407
Increase (Decrease) in Stockholders' Equity
Net income			44,216			44,216
Stock-based compensation		3,244				3,244
Issuance of stock under purchase and equity compensation plans, including gain on reissuance of treasury stock, net		(2,841)		9,754		6,913
Reissuance of treasury stock of 3,398,477 shares for acquisition of Peoples, Inc.		42,243		67,970		110,213
Cash dividends declared			(11,461)			(11,461)
Reclassification of certain tax effects from accumulated other comprehensive income			1,479		(1,479)
Cumulative effect adjustment			26			26
Other comprehensive income (loss)					(12,493)	(12,493)
Balance in the ending at Sep. 30, 2018	515	1,013,314	95,055	(415,605)	(20,214)	673,065
Balance in the beginning at Jun. 30, 2018	515	1,012,175	81,182	(416,281)	(17,407)	660,184
Increase (Decrease) in Stockholders' Equity
Net income			18,240			18,240
Stock-based compensation		1,238				1,238
Issuance of stock under purchase and equity compensation plans, including gain on reissuance of treasury stock, net		(99)		676		577
Cash dividends declared			(4,367)			(4,367)
Other comprehensive income (loss)					(2,807)	(2,807)
Balance in the ending at Sep. 30, 2018	515	1,013,314	95,055	(415,605)	(20,214)	673,065
Balance in the beginning at Dec. 31, 2018	515	1,014,399	106,990	(415,623)	(11,275)	695,006
Increase (Decrease) in Stockholders' Equity
Net income			60,846			60,846
Stock-based compensation		3,325				3,325
Issuance of stock under purchase and equity compensation plans, including gain on reissuance of treasury stock, net		(10,096)		6,853		(3,243)
Cash dividends declared			(17,226)			(17,226)
Cumulative effect adjustment			256			256
Other comprehensive income (loss)					14,362	14,362
Balance in the ending at Sep. 30, 2019	515	1,007,628	150,866	(408,770)	3,087	753,326
Balance in the beginning at Jun. 30, 2019	515	1,006,008	135,210	(409,322)	1,506	733,917
Increase (Decrease) in Stockholders' Equity
Net income			21,642			21,642
Stock-based compensation		1,441				1,441
Issuance of stock under purchase and equity compensation plans, including gain on reissuance of treasury stock, net		179		552		731
Cash dividends declared			(5,986)			(5,986)
Other comprehensive income (loss)					1,581	1,581
Balance in the ending at Sep. 30, 2019	$ 515	$ 1,007,628	$ 150,866	$ (408,770)	$ 3,087	$ 753,326

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Gain on reissuance of treasury stock	$ 373	$ 675	$ 6,106	$ 7,947
Reissuance of treasury stock, shares				3,398,477
Cash dividends declared per share	$ 0.19	$ 0.14	$ 0.55	$ 0.37

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 60,846	$ 44,216
Adjustments to reconcile net income to net cash used in operating activities:
Provision for loan losses	10,463	2,721
Depreciation and amortization	11,112	8,908
Current income tax receivable	3,498	2,021
Deferred income taxes	7,431	5,271
Net excess tax benefit on stock-based compensation	(2,162)	(1,271)
Discount accretion, net of premium amortization on securities	1,483	2,292
Loan accretion	(12,291)	(18,192)
Gain on sale of mortgages, net	(30,086)	(22,109)
Origination of loans held for sale, net of repayments	(946,576)	(808,527)
Proceeds from sales of loans held for sale	820,905	809,419
Bank-owned life insurance income	(1,276)	(1,361)
(Gain) loss on the sale of other real estate owned, net	(7,200)	(386)
Impairment on other real estate owned	872	220
Impairment on fixed assets related to banking center consolidations	898
Stock-based compensation	3,325	3,244
Operating lease payments	(4,209)
Change in other assets	(6,846)	(19,671)
Change in other liabilities	29,209	16,275
Net cash used in operating activities	(60,604)	23,070
Cash flows from investing activities:
Purchase of FHLB stock	(13,422)	(9,577)
Proceeds from redemption of FHLB stock	13,700	12,411
Proceeds from maturities of investment securities held-to-maturity	44,090	48,340
Proceeds from maturities of investment securities available-for-sale	146,316	168,773
Proceeds from sales of investment securities available-for-sale	20,378	33,517
Proceeds from maturities of non-marketable securities		67
Purchase of investment securities held-to-maturity		(40,735)
Purchase of investment securities available-for-sale	(18,005)	(42,199)
Increase in securities purchased under agreement to resell	6,688
Net increase in loans	(305,450)	(202,863)
Purchases of premises and equipment, net	(7,743)	(5,033)
Proceeds from sales of loans		713
Proceeds from sales of other real estate owned	11,508	1,694
Net cash activity from acquisition		68,984
Net cash (used in) provided by investing activities	(108,628)	34,092
Cash flows from financing activities:
Net increase (decrease) in deposits	198,239	(95,438)
Decrease in repurchase agreements		(74,768)
Advances from FHLB	1,199,492	573,994
FHLB repayments	(1,207,255)	(592,395)
Issuance of stock under purchase and equity compensation plans	(6,079)	(2,139)
Proceeds from exercise of stock options	2,780	9,052
Payment of dividends	(17,270)	(11,373)
Net cash provided by (used in) financing activities	176,595	(193,067)
Decrease in cash, cash equivalents and restricted cash	7,363	(135,905)
Cash, cash equivalents and restricted cash at beginning of the year	119,556	257,364
Cash, cash equivalents and restricted cash at end of period	126,919	121,459
Supplemental disclosure of cash flow information during the period:
Cash paid for interest	25,050	14,853
Net tax payments (refunds)	5,547	(2,489)
Supplemental schedule of non-cash activities:
Loans transferred to other real estate owned at fair value	2,488	24,919
Decrease in loans purchased but not settled	2,526	(11,195)
Loans transferred from loans held for sale to loans	725	1,038
Lease right-of-use assets obtained	$ (30,474)
Treasury stock reissued for acquisition		$ 110,213

Basis of Presentation

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2019
Basis of Presentation
Basis of Presentation	Note 1 Basis of Presentation National Bank Holdings Corporation ("NBHC" or the "Company") is a bank holding company that was incorporated in the State of Delaware in 2009. The Company is headquartered in Denver, Colorado, and its primary operations are conducted through its wholly owned subsidiary, NBH Bank (the "Bank"), a Colorado state-chartered bank and a member of the Federal Reserve System. The Company provides a variety of banking products to both commercial and consumer clients through a network of 105 banking centers, as of September 30, 2019, located primarily in Colorado and the greater Kansas City region, and through online and mobile banking products and services. The accompanying interim unaudited consolidated financial statements serve to update the National Bank Holdings Corporation Annual Report on Form 10-K Form 10-K GAAP requires management to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses and disclosures of contingent assets and liabilities. By their nature, estimates are based on judgment and available information. Management has made significant estimates in certain areas, such as the amount and timing of expected cash flows from assets, the valuation of other real estate owned (“OREO”), the fair value adjustments on assets acquired and liabilities assumed, the valuation of core deposit intangible assets, the valuation of investment securities for other-than-temporary impairment (“OTTI”), the valuation of stock-based compensation, the valuation of mortgage servicing rights, the fair values of financial instruments, the allowance for loan losses (“ALL”) and contingent liabilities. Because of the inherent uncertainties associated with any estimation process and future changes in market and economic conditions, it is possible that actual results could differ significantly from those estimates. The Company's significant accounting policies followed in the preparation of the unaudited consolidated financial statements are disclosed in note 2 of the audited financial statements and notes for the year ended December 31, 2018 and are contained in the Company's Annual Report on Form 10-K

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
Recent Accounting Pronouncements	Sep. 30, 2019
Recent Accounting Pronouncements
Recent Accounting Pronouncements	Note 2 Recent Accounting Pronouncements Leases Leases. Leases impact our financial statements in relation to contracts whereby we act as a lessor. We applied the modified-retrospective transition approach prescribed by ASU 2018-11. Upon adoption of ASU 2016-02 and ASU 2018-11 on January 1, 2019, we recognized right-of-use assets and related lease liabilities totaling $30.5 million with a cumulative-effect adjustment to beginning retained earnings of $0.3 million. Refer to note 6 – Leases of our consolidated financial statements for further detail. Financial Instruments - Credit Losses 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. ASU 2016-13 becomes effective for us on January 1, 2020. We have formed a cross-functional working group, including our credit, finance, risk management and enterprise technology departments, to address the adoption and implementation of ASU 2016-13. We are working through our implementation plan which includes the assessment and documentation of processes, internal controls, data sources and system configuration and validation, among other things. We are implementing a third-party vendor solution to assist us in the application of ASU 2016-13. We expect that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. The adoption of ASU 2016-13 could result in an increase in the allowance for loan losses as a result of changing from an “incurred loss” model, which encompasses allowances for current known and inherent losses within the portfolio, to an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. We are currently evaluating the potential impact of ASU 2016-13 and subsequent updates on our financial statements. Other Pronouncements Intangibles - Goodwill and Other Simplifying the Test for Goodwill Impairment Fair Value Measurement Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement .

Investment Securities

Investment Securities	9 Months Ended
Investment Securities	Sep. 30, 2019
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 $0.9 billion at September 30, 2019 and included $0.7 billion of available-for-sale securities and $0.2 billion of held-to-maturity securities. At December 31, 2018, investment securities totaled $1.0 billion and included $0.8 billion of available-for-sale securities and $0.2 billion of held-to-maturity securities. Available-for-sale At September 30, 2019 and December 31, 2018, the Company held $661.1 million and $791.1 million of available-for-sale investment securities, respectively. Available-for-sale securities are summarized as follows as of the dates indicated: September 30, 2019 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 $ 102,354 $ 1,581 $ (50) $ 103,885 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 556,400 4,873 (5,107) 556,165 Municipal securities 619 — (9) 610 Other securities 469 — — 469 Total investment securities available-for-sale $ 659,842 $ 6,454 $ (5,167) $ 661,129 December 31, 2018 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 147,283 $ 1,232 $ (1,873) $ 146,642 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 661,354 1,056 (19,029) 643,381 Municipal securities 619 — (9) 610 Other securities 469 — — 469 Total investment securities available-for-sale $ 809,725 $ 2,288 $ (20,911) $ 791,102 At September 30, 2019 and December 31, 2018, 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 owned agency Government National Mortgage Association (“GNMA”). The tables below summarize the available-for-sale securities with unrealized losses as of the dates shown, along with the length of the impairment period: September 30, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 10,879 $ (33) $ 4,623 $ (17) $ 15,501 $ (50) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 9,143 (19) 273,284 (5,088) 282,426 (5,107) Municipal securities — — 441 (9) 441 (9) Total $ 20,021 $ (53) $ 278,347 $ (5,114) $ 298,369 $ (5,167) December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 30,853 $ (392) $ 69,169 $ (1,481) $ 100,022 $ (1,873) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 127,767 (1,150) 454,662 (17,879) 582,429 (19,029) Municipal securities 441 (9) — — 441 (9) Total $ 159,061 $ (1,551) $ 523,831 $ (19,360) $ 682,892 $ (20,911) The unrealized losses in the Company's investment portfolio at September 30, 2019 were caused by changes in interest rates. The portfolio included 68 securities, having an aggregate fair value of $298.4 million, which were in an unrealized loss position at September 30, 2019, compared to 211 securities, with an aggregate fair value of $682.9 million at December 31, 2018. Management evaluated all of the available for sale securities in an unrealized loss position at September 30, 2019 and December 31, 2018, and concluded no OTTI existed. The Company has no intention to sell these securities before recovery of their amortized cost and believes it will not be required to sell the securities before the recovery of their amortized cost. Certain securities are pledged as collateral for public deposits, securities sold under agreements to repurchase and to secure borrowing capacity at the Federal Reserve Bank and Federal Home Loan Bank (“FHLB”). The fair value of available-for-sale investment securities pledged as collateral totaled $360.6 million and $318.1 million at September 30, 2019 and at December 31, 2018, respectively. Mortgage-backed securities may have actual maturities that differ from contractual maturities depending on the repayment characteristics and experience of the underlying financial instruments. As of September 30, 2019, municipal securities with an amortized cost and fair value of $0.2 million were due after one year through five years, while municipal securities with an amortized cost and fair value of $0.4 million were due after five years through ten years. Other securities of $0.5 million as of September 30, 2019, have no stated contractual maturity date. Held-to-maturity At September 30, 2019 and December 31, 2018, the Company held $190.0 million and $235.4 million of held-to-maturity investment securities, respectively. Held-to-maturity investment securities are summarized as follows as of the dates indicated: September 30, 2019 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 127,008 $ 976 $ (13) $ 127,972 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 62,974 162 (457) 62,679 Total investment securities held-to-maturity $ 189,982 $ 1,139 $ (470) $ 190,651 December 31, 2018 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 157,115 $ 2 $ (2,705) $ 154,412 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 78,283 — (1,769) 76,514 Total investment securities held-to-maturity $ 235,398 $ 2 $ (4,474) $ 230,926 The tables below summarize the held-to-maturity securities with unrealized losses as of the dates shown, along with the length of the impairment period: September 30, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 397 $ (1) $ 4,819 $ (12) $ 5,216 $ (13) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 4,154 (11) 30,872 (446) 35,026 (457) Total $ 4,551 $ (12) $ 35,691 $ (458) $ 40,242 $ (470) December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 26,660 $ (381) $ 126,475 $ (2,324) $ 153,135 $ (2,705) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 35,235 (79) 41,279 (1,690) 76,514 (1,769) Total $ 61,895 $ (460) $ 167,754 $ (4,014) $ 229,649 $ (4,474) The held-to-maturity portfolio included 12 securities, having an aggregate fair value of $40.2 million, which were in an unrealized loss position at September 30, 2019, compared to 49 securities, with a fair value of $229.6 million, at December 31, 2018. The unrealized losses in the Company's investments at September 30, 2019 and December 31, 2018 were caused by changes in interest rates. Management evaluated all of the held-to-maturity securities in an unrealized loss position and concluded that no OTTI existed at September 30, 2019 or December 31, 2018. 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 $171.1 million and $133.1 million at September 30, 2019 and December 31, 2018, respectively. Actual maturities of mortgage-backed securities may differ from scheduled maturities depending on the repayment characteristics and experience of the underlying financial instruments.

Loans

Loans	9 Months Ended
Loans	Sep. 30, 2019
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 tables below show the loan portfolio composition including carrying value by segment of originated and acquired loans and loans accounted for under ASC 310-30, Receivables—Loans and Debt Securities Acquired with Deteriorated Credit Quality September 30, 2019 Originated and ASC acquired loans 310-30 loans Total loans % of total Commercial $ 2,932,205 $ 16,262 $ 2,948,467 67.0% Commercial real estate non-owner occupied 606,720 34,460 641,180 14.6% Residential real estate 783,600 6,477 790,077 17.9% Consumer 22,193 — 22,193 0.5% Total $ 4,344,718 $ 57,199 $ 4,401,917 100.0% December 31, 2018 Originated and ASC acquired loans 310-30 loans Total loans % of total Commercial $ 2,624,173 $ 20,398 $ 2,644,571 64.6% Commercial real estate non-owner occupied 551,819 40,393 592,212 14.5% Residential real estate 820,820 9,995 830,815 20.3% Consumer 24,617 93 24,710 0.6% Total $ 4,021,429 $ 70,879 $ 4,092,308 100.0% Delinquency for originated and acquired loans is shown in the following tables at September 30, 2019 and December 31, 2018: September 30, 2019 Greater 30-89 days than 90 days Total past Total past due and past due and Non-accrual due and originated and accruing accruing loans non-accrual Current acquired loans Originated and acquired loans: Commercial: Commercial and industrial $ 4,842 $ 1,968 $ 9,880 $ 16,690 $ 2,187,999 $ 2,204,689 Owner occupied commercial real estate — — 4,001 4,001 442,628 446,629 Food and agriculture 111 — 358 469 234,116 234,585 Energy — — 915 915 45,387 46,302 Total commercial 4,953 1,968 15,154 22,075 2,910,130 2,932,205 Commercial real estate non-owner occupied: Construction — — 385 385 85,658 86,043 Acquisition/development 152 — 731 883 15,632 16,515 Multifamily — — — — 68,953 68,953 Non-owner occupied 100 — 379 479 434,730 435,209 Total commercial real estate 252 — 1,495 1,747 604,973 606,720 Residential real estate: Senior lien 1,054 — 7,828 8,882 678,509 687,391 Junior lien 349 — 867 1,216 94,993 96,209 Total residential real estate 1,403 — 8,695 10,098 773,502 783,600 Consumer 115 — 54 169 22,024 22,193 Total originated and acquired loans $ 6,723 $ 1,968 $ 25,398 $ 34,089 $ 4,310,629 $ 4,344,718 December 31, 2018 Greater 30-89 days than 90 days Total past Total past due and past due and Non-accrual due and originated and accruing accruing loans non-accrual Current acquired loans Originated and acquired loans: Commercial: Commercial and industrial $ 495 $ 74 $ 5,510 $ 6,079 $ 1,925,068 $ 1,931,147 Owner occupied commercial real estate 893 — 6,931 7,824 413,842 421,666 Food and agriculture 141 125 768 1,034 221,122 222,156 Energy — — 742 742 48,462 49,204 Total commercial 1,529 199 13,951 15,679 2,608,494 2,624,173 Commercial real estate non-owner occupied: Construction — — 1,208 1,208 93,646 94,854 Acquisition/development — — 121 121 19,529 19,650 Multifamily — — — — 56,685 56,685 Non-owner occupied 328 132 572 1,032 379,598 380,630 Total commercial real estate 328 132 1,901 2,361 549,458 551,819 Residential real estate: Senior lien 2,106 548 7,790 10,444 712,592 723,036 Junior lien 556 — 772 1,328 96,456 97,784 Total residential real estate 2,662 548 8,562 11,772 809,048 820,820 Consumer 91 16 42 149 24,468 24,617 Total originated and acquired loans $ 4,610 $ 895 $ 24,456 $ 29,961 $ 3,991,468 $ 4,021,429 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 therefore are not included in the tables above. Non-accrual loans include non-accrual loans and troubled debt restructurings on non-accrual status. Non-accrual originated and acquired loans totaled $25.4 million at September 30, 2019, increasing $0.9 million, or 3.9% from December 31, 2018. The Company’s internal risk rating system uses a series of grades which reflect our assessment of the credit quality of loans based on an analysis of the borrower's financial condition, liquidity and ability to meet contractual debt service requirements and are categorized as “Pass”, “Special mention”, “Substandard” and “Doubtful”. A description of the general characteristics of the risk grades is set forth in the Company’s 2018 Annual Report on Form 10-K Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows as of September 30, 2019 and December 31, 2018, respectively: September 30, 2019 Special Pass mention Substandard Doubtful Total Originated and acquired loans: Commercial: Commercial and industrial $ 2,165,513 $ 22,809 $ 14,893 $ 1,474 $ 2,204,689 Owner occupied commercial real estate 411,851 25,351 9,345 82 446,629 Food and agriculture 217,305 16,143 1,104 33 234,585 Energy 45,387 — 915 — 46,302 Total commercial 2,840,056 64,303 26,257 1,589 2,932,205 Commercial real estate non-owner occupied: Construction 85,658 — 385 — 86,043 Acquisition/development 15,744 — 771 — 16,515 Multifamily 68,459 — 494 — 68,953 Non-owner occupied 420,362 13,782 950 115 435,209 Total commercial real estate 590,223 13,782 2,600 115 606,720 Residential real estate: Senior lien 678,576 82 8,733 — 687,391 Junior lien 94,813 426 970 — 96,209 Total residential real estate 773,389 508 9,703 — 783,600 Consumer 22,139 — 54 — 22,193 Total originated and acquired loans $ 4,225,807 $ 78,593 $ 38,614 $ 1,704 $ 4,344,718 Loans accounted for under ASC 310-30: Commercial $ 13,722 $ 495 $ 2,045 $ — $ 16,262 Commercial real estate non-owner occupied 33,577 222 661 — 34,460 Residential real estate 4,851 368 1,258 — 6,477 Consumer — — — — — Total loans accounted for under ASC 310-30 $ 52,150 $ 1,085 $ 3,964 $ — $ 57,199 Total loans $ 4,277,957 $ 79,678 $ 42,578 $ 1,704 $ 4,401,917 December 31, 2018 Special Pass mention Substandard Doubtful Total Originated and acquired loans: Commercial: Commercial and industrial $ 1,890,710 $ 16,531 $ 22,919 $ 987 $ 1,931,147 Owner occupied commercial real estate 393,404 16,349 11,828 85 421,666 Food and agriculture 220,004 1,260 847 45 222,156 Energy 48,462 — 742 — 49,204 Total commercial 2,552,580 34,140 36,336 1,117 2,624,173 Commercial real estate non-owner occupied: Construction 92,731 915 1,208 — 94,854 Acquisition/development 19,529 — 121 — 19,650 Multifamily 56,685 — — — 56,685 Non-owner occupied 355,776 23,243 1,611 — 380,630 Total commercial real estate 524,721 24,158 2,940 — 551,819 Residential real estate: Senior lien 710,972 3,571 8,493 — 723,036 Junior lien 96,456 415 913 — 97,784 Total residential real estate 807,428 3,986 9,406 — 820,820 Consumer 24,575 — 42 — 24,617 Total originated and acquired loans $ 3,909,304 $ 62,284 $ 48,724 $ 1,117 $ 4,021,429 Loans accounted for under ASC 310-30: Commercial $ 17,579 $ 537 $ 2,282 $ — $ 20,398 Commercial real estate non-owner occupied 39,322 246 825 — 40,393 Residential real estate 7,484 908 1,603 — 9,995 Consumer — — 93 — 93 Total loans accounted for under ASC 310-30 $ 64,385 $ 1,691 $ 4,803 $ — $ 70,879 Total loans $ 3,973,689 $ 63,975 $ 53,527 $ 1,117 $ 4,092,308 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 originated and acquired loans 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 September 30, 2019 and December 31, 2018, the Company’s recorded investment in impaired loans was $37.0 million and $31.1 million, respectively, of which $7.4 million and $4.1 million, respectively, were accruing TDRs. Impaired loans had a collective related allowance for loan losses allocated to them of $1.8 million and $1.2 million at September 30, 2019 and December 31, 2018, respectively. Additional information regarding impaired loans at September 30, 2019 and December 31, 2018 is set forth in the table below: September 30, 2019 December 31, 2018 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 $ 17,772 $ 10,982 $ — $ 4,374 $ 3,029 $ — Owner occupied commercial real estate 4,129 3,716 — 7,130 6,609 — Food and agriculture 1,468 1,220 — 1,468 1,260 — Energy 5,539 915 — 5,366 742 — Total commercial 28,908 16,833 — 18,338 11,640 — Commercial real estate non-owner occupied: Construction 389 385 — 1,435 1,208 — Acquisition/development 763 731 — 378 121 — Multifamily — — — — — — Non-owner occupied 90 26 — 641 547 — Total commercial real estate 1,242 1,142 — 2,454 1,876 — Residential real estate: Senior lien 4,660 4,339 — 4,229 3,814 — Junior lien 355 320 — 409 341 — Total residential real estate 5,015 4,659 — 4,638 4,155 — Consumer 60 54 — 46 42 — Total impaired loans with no related allowance recorded $ 35,225 $ 22,688 $ — $ 25,476 $ 17,713 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 8,679 $ 5,959 $ 1,486 $ 7,252 $ 4,627 $ 996 Owner occupied commercial real estate 1,263 1,045 86 1,362 1,169 90 Food and agriculture 798 792 36 883 845 46 Energy — — — — — — Total commercial 10,740 7,796 1,608 9,497 6,641 1,132 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 590 525 117 313 254 2 Total commercial real estate 590 525 117 313 254 2 Residential real estate: Senior lien 5,900 4,974 24 6,032 5,178 27 Junior lien 1,153 1,019 7 1,408 1,293 8 Total residential real estate 7,053 5,993 31 7,440 6,471 35 Consumer — — — — — — Total impaired loans with a related allowance recorded $ 18,383 $ 14,314 $ 1,756 $ 17,250 $ 13,366 $ 1,169 Total impaired loans $ 53,608 $ 37,002 $ 1,756 $ 42,726 $ 31,079 $ 1,169 The tables below show additional information regarding the average recorded investment and interest income recognized on impaired loans for the periods presented: For the three months ended September 30, 2019 September 30, 2018 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 11,808 $ 41 $ 4,518 $ 68 Owner occupied commercial real estate 3,656 7 7,278 17 Food and agriculture 1,220 — 1,259 — Energy 909 — 2,044 15 Total commercial 17,593 48 15,099 100 Commercial real estate non-owner occupied: Construction 257 — 1,081 — Acquisition/development 491 — 590 — Multifamily — — — — Non-owner occupied 27 — 559 — Total commercial real estate 775 — 2,230 — Residential real estate: Senior lien 4,313 1 3,062 — Junior lien 323 1 316 1 Total residential real estate 4,636 2 3,378 1 Consumer 10 — 12 — Total impaired loans with no related allowance recorded $ 23,014 $ 50 $ 20,719 $ 101 With a related allowance recorded: Commercial: Commercial and industrial $ 5,908 $ — $ 5,015 $ — Owner occupied commercial real estate 1,060 6 1,205 5 Food and agriculture 799 3 853 1 Energy — — — — Total commercial 7,767 9 7,073 6 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 528 2 277 4 Total commercial real estate 528 2 277 4 Residential real estate: Senior lien 5,004 15 5,351 17 Junior lien 1,029 7 1,250 16 Total residential real estate 6,033 22 6,601 33 Consumer 40 — 35 — Total impaired loans with a related allowance recorded $ 14,368 $ 33 $ 13,986 $ 44 Total impaired loans $ 37,382 $ 83 $ 34,705 $ 145 For the nine months ended September 30, 2019 September 30, 2018 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 6,569 $ 129 $ 5,206 $ 241 Owner occupied commercial real estate 3,345 20 7,415 52 Food and agriculture 1,348 — 1,259 6 Energy 839 — 2,080 52 Total Commercial 12,101 149 15,960 351 Commercial real estate non-owner occupied: Construction 86 — 1,081 — Acquisition/development 170 — 768 — Multifamily — — — — Non-owner occupied 29 — 580 — Total commercial real estate 285 — 2,429 — Residential real estate: Senior lien 3,677 1 3,118 — Junior lien 334 2 323 1 Total residential real estate 4,010 3 3,441 1 Consumer 11 — 13 — Total impaired loans with no related allowance recorded $ 16,408 $ 152 $ 21,843 $ 352 With a related allowance recorded: Commercial: Commercial and industrial $ 5,286 $ — $ 5,175 $ — Owner occupied commercial real estate 1,093 18 1,234 14 Food and agriculture 630 7 866 4 Energy — — — — Total Commercial 7,010 25 7,275 18 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 511 11 297 14 Total commercial real estate 511 11 297 14 Residential real estate: Senior lien 4,813 43 5,503 43 Junior lien 1,009 22 1,273 35 Total residential real estate 5,822 65 6,776 78 Consumer 43 — 38 — Total impaired loans with a related allowance recorded $ 13,386 $ 101 $ 14,386 $ 109 Total impaired loans $ 29,794 $ 253 $ 36,229 $ 461 Interest income recognized on impaired loans noted in the tables above primarily represents interest earned on accruing TDRs. Interest income recognized on impaired loans during the three months ended September 30, 2019 and 2018 was $0.1 million and $0.1 million, respectively. Interest income recognized on impaired loans during the nine months ended September 30, 2019 and 2018 was $0.3 million and $0.5 million, respectively. Troubled debt restructurings The Company’s policy is to review each prospective credit 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. During the nine months ended September 30, 2019, the Company restructured 15 loans with a recorded investment of $8.2 million at September 30, 2019 to facilitate repayment. 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 tables below provide additional information related to accruing TDRs at September 30, 2019 and December 31, 2018: September 30, 2019 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investment principal balance to fund TDRs Commercial $ 6,085 $ 1,738 $ 6,207 $ 151 Commercial real estate non-owner occupied 159 181 210 — Residential real estate 1,140 1,124 1,172 12 Consumer — — — — Total $ 7,384 $ 3,043 $ 7,589 $ 163 December 31, 2018 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investment principal balance to fund TDRs Commercial $ 2,730 $ 2,827 $ 3,155 $ — Commercial real estate non-owner occupied 229 260 280 — Residential real estate 1,114 1,163 1,121 12 Consumer — — — — Total $ 4,073 $ 4,250 $ 4,556 $ 12 The following table summarizes the Company’s carrying value of non-accrual TDRs as of September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 Commercial $ 2,392 $ 1,854 Commercial real estate non-owner occupied 1,109 — Residential real estate 2,630 1,584 Consumer — — Total non-accruing TDRs $ 6,131 $ 3,438 At September 30, 2019 and December 31, 2018, the Company had $7.4 million and $4.1 million, respectively, of accruing TDRs that had been restructured from the original terms in order to facilitate repayment. Non-accruing TDRs totaled $6.1 million as of September 30, 2019 and increased $2.7 million from December 31, 2018. Accrual of interest is resumed on loans that were previously on non-accrual only after the loan has performed sufficiently for a period of time. The Company had no TDRs modified within the past 12 months that had defaulted on their restructured terms during the nine months ended September 30, 2019. During the nine months ended September 30, 2018, the Company had three TDRs totaling $0.4 million that were modified within the past 12 months and had 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. 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 TDRs. Loans accounted for under ASC 310-30 Loan pools accounted for under ASC Topic 310-30 are periodically remeasured 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 remeasurement of loans accounted for under ASC 310-30 resulted in the following changes in the carrying amount of accretable yield during the nine months ended September 30, 2019 and 2018: September 30, 2019 September 30, 2018 Accretable yield beginning balance $ 35,901 $ 46,568 Reclassification from non-accretable difference 6,195 10,070 Reclassification to non-accretable difference (921) (1,929) Accretion (10,232) (15,009) Accretable yield ending balance $ 30,943 $ 39,700 Below is the composition of the net book value for loans accounted for under ASC 310-30 at September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 Contractual cash flows $ 397,081 $ 420,994 Non-accretable difference (308,939) (314,214) Accretable yield (30,943) (35,901) Loans accounted for under ASC 310-30 $ 57,199 $ 70,879

Allowance for Loan Losses

Allowance for Loan Losses	9 Months Ended
Allowance for Loan Losses	Sep. 30, 2019
Receivables [Abstract]
Allowance for Loan Losses	Note 5 Allowance for Loan Losses The tables below detail the Company’s allowance for loan losses and recorded investment in loans as of and for the three and nine months ended September 30, 2019 and 2018: Three months ended September 30, 2019 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 30,823 $ 5,067 $ 3,851 $ 341 $ 40,082 Originated and acquired beginning balance 30,642 5,067 3,841 341 39,891 Charge-offs (6,760) (1) (77) (263) (7,101) Recoveries 2 — 3 34 39 Provision 5,731 (11) (204) 185 5,701 Originated and acquired ending balance 29,615 5,055 3,563 297 38,530 ASC 310-30 beginning balance 181 — 10 — 191 Charge-offs — — — — — Recoveries — — — — — Recoupment (1) — (10) — (11) ASC 310-30 ending balance 180 — — — 180 Ending balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Three months ended September 30, 2018 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 23,582 $ 4,561 $ 3,781 $ 306 $ 32,230 Originated and acquired beginning balance 23,400 4,542 3,781 306 32,029 Charge-offs — — (13) (381) (394) Recoveries 1,097 — 2 71 1,170 Provision 606 (78) (49) 322 801 Originated and acquired ending balance 25,103 4,464 3,721 318 33,606 ASC 310-30 beginning balance 182 19 — — 201 Charge-offs — — — — — Recoveries — — — — — Provision (recoupment) 9 (3) — — 6 ASC 310-30 ending balance 191 16 — — 207 Ending balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Nine months ended September 30, 2019 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 27,137 $ 4,406 $ 3,800 $ 349 $ 35,692 Originated and acquired beginning balance 26,946 4,406 3,760 349 35,461 Charge-offs (6,841) (1) (124) (696) (7,662) Recoveries 31 11 32 143 217 Provision 9,479 639 (105) 501 10,514 Originated and acquired ending balance 29,615 5,055 3,563 297 38,530 ASC 310-30 beginning balance 191 — 40 — 231 Charge-offs — — — — — Recoveries — — — — — Recoupment (11) — (40) — (51) ASC 310-30 ending balance 180 — — — 180 Ending balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Ending allowance balance attributable to: Originated and acquired loans individually evaluated for impairment $ 1,608 $ 117 $ 31 $ — $ 1,756 Originated and acquired loans collectively evaluated for impairment 28,007 4,938 3,532 297 36,774 ASC 310-30 loans 180 — — — 180 Total ending allowance balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Loans: Originated and acquired loans individually evaluated for impairment $ 24,630 $ 1,667 $ 10,652 $ 54 $ 37,003 Originated and acquired loans collectively evaluated for impairment 2,907,575 605,053 772,948 22,139 4,307,715 ASC 310-30 loans 16,262 34,460 6,477 — 57,199 Total loans $ 2,948,467 $ 641,180 $ 790,077 $ 22,193 $ 4,401,917 Nine months ended September 30, 2018 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 21,385 $ 5,609 $ 3,965 $ 305 $ 31,264 Originated and acquired beginning balance 21,340 5,583 3,965 305 31,193 Charge-offs (437) (11) (103) (894) (1,445) Recoveries 1,152 — 8 174 1,334 Provision 3,048 (1,108) (149) 733 2,524 Originated and acquired ending balance 25,103 4,464 3,721 318 33,606 ASC 310-30 beginning balance 45 26 — — 71 Charge-offs (61) — — — (61) Recoveries — — — — — Provision (recoupment) 207 (10) — — 197 ASC 310-30 ending balance 191 16 — — 207 Ending balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Ending allowance balance attributable to: Originated and acquired loans individually evaluated for impairment $ 1,446 $ 2 $ 36 $ — $ 1,484 Originated and acquired loans collectively evaluated for impairment 23,657 4,462 3,685 318 32,122 ASC 310-30 loans 191 16 — — 207 Total ending allowance balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Loans: Originated and acquired loans individually evaluated for impairment $ 22,585 $ 2,034 $ 4,319 $ 5,640 $ 34,578 Originated and acquired loans collectively evaluated for impairment 2,397,248 567,367 810,187 21,010 3,795,812 ASC 310-30 loans 22,258 41,842 10,721 100 74,921 Total loans $ 2,442,091 $ 611,243 $ 825,227 $ 26,750 $ 3,905,311 In evaluating the loan portfolio for an appropriate ALL level, non-impaired originated and acquired loans were grouped into segments based on broad characteristics such as primary use and underlying collateral. Within the segments, the portfolio was further disaggregated into classes of loans with similar attributes and risk characteristics for purposes of applying loss ratios and determining applicable subjective adjustments to the ALL. The application of subjective adjustments was based upon qualitative risk factors, including economic trends and conditions, industry conditions, asset quality, loss trends, lending management, portfolio growth and loan review/internal audit results. Net charge-offs on originated and acquired loans during the three and nine months ended September 30, 2019 totaled $7.1 million and $7.4 million, respectively, and included $6.6 million for one previously identified acquired commercial loan that was placed on non-accrual during the second quarter of 2019. Management's evaluation of credit quality resulted in provisions for originated and acquired loan losses of $5.7 million and $10.5 million during the three and nine months ended September 30, 2019, respectively, and included $4.2 million and $6.6 million, respectively, related to the loan described above. Provision for originated and acquired loans for the three and nine months ended September 30, 2018 was $0.8 million and $2.5 million, respectively. During the nine months ended September 30, 2019, the Company re-estimated the expected cash flows of the loan pools accounted for under ASC 310-30. The remeasurement during the three and nine months ended September 30, 2019 resulted in recoupment of $11 thousand and $51 thousand, respectively. The remeasurement during the three and nine months ended September 30, 2018 resulted in net provision of $6 thousand and $197 thousand, respectively.

Leases

Leases	9 Months Ended
Leases	Sep. 30, 2019
Leases
Leases	Note 6 Leases The Company adopted ASU 2016-02, Leases earnings of $0.3 million. As of September 30, 2019, ROU assets totaled $30.7 million included in other assets and related lease liabilities totaled $30.9 million included in other liabilities on the consolidated statements of financial condition. The ROU assets represent the Company’s right to use, or control the use of, an underlying asset for the lease term and the lease liabilities represent the Company’s obligation to make lease payments arising from the lease terms. The updates did not significantly change lease accounting requirements applicable to lessors and did not significantly impact our financial statements in relation to contracts whereby we act as a lessor. The Company has operating leases for banking centers, corporate offices and ATM locations, with remaining lease terms ranging from one year to ten years. The Company only included reasonably certain renewal options in the lease terms. The weighted-average remaining lease term for our operating leases was 5.3 years at September 30, 2019. As of September 30, 2019, the weighted-average discount rate was 3.34%, utilizing the Company’s incremental FHLB borrowing rate for borrowings of a similar term at the date of lease commencement. Rent expense totaled $1.5 million and $4.3 million for the three and nine months ended September 30, 2019, respectively, and was recorded within occupancy and equipment on the consolidated statements of operations. Lease payments do not include non-lease components such as real estate taxes, insurance and common area maintenance. The tables below represent undiscounted future cash flows under the current and prior lease guidance. Current guidance per ASC Topic 842 requires that optional renewal periods be included when it is reasonably certain they will be exercised. Below is a summary of undiscounted future minimum lease payments as of September 30, 2019 per ASC Topic 842, Leases Amount For the three months ending December 31, 2019 $ 1,411 For the year ending December 31, 2020 5,435 For the year ending December 31, 2021 5,148 For the year ending December 31, 2022 4,643 For the year ending December 31, 2023 4,330 Thereafter 19,323 Total lease payments 40,290 Less: Imputed interest 9,392 Present value of operating lease liabilities $ 30,898 Below is a summary of undiscounted future minimum lease payments as of December 31, 2018 per ASC Topic 840, Leases Years ending December 31, Amount 2019 $ 3,092 2020 2,981 2021 3,091 2022 3,052 2023 2,047 Thereafter 10,163 Total $ 24,426

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
Other Real Estate Owned	Sep. 30, 2019
Other Real Estate Owned
Other Real Estate Owned	Note 7 Other Real Estate Owned A summary of the activity in OREO during the nine months ended September 30, 2019 and 2018 is as follows: For the nine months ended September 30, 2019 2018 Beginning balance $ 10,596 $ 10,491 Acquired through acquisition — 1,253 Transfers from loan portfolio, at fair value 2,488 24,919 Impairments (872) (220) Sales (4,308) (1,308) Ending balance $ 7,904 $ 35,135 OREO totaled $7.9 million at September 30, 2019 and decreased $2.7 million from December 31, 2018. During the nine months ended September 30, 2019 and 2018, the Company sold OREO properties with net book balances of $4.3 million and $1.3 million, respectively. The sales resulted in net OREO gains of $7.2 million and $0.4 million which were included in the consolidated statements of operations for the nine months ended September 30, 2019 and 2018, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
Goodwill and Intangible Assets	Sep. 30, 2019
Goodwill and Intangible Assets
Goodwill and Intangible Assets	Note 8 Goodwill and Intangible Assets Goodwill and core deposit intangible In connection with all of our acquisitions, the Company recorded goodwill of $115.0 million and core deposit intangible assets of $48.8 million. Goodwill is measured as the excess of the fair value of consideration paid over the fair value of net assets acquired. No goodwill impairment was recorded during the three or nine months ended September 30, 2019 or the year ended December 31, 2018. The gross carrying amount of the core deposit intangibles and the associated accumulated amortization at September 30, 2019 and December 31, 2018, are presented as follows: September 30, 2019 December 31, 2018 Gross Net Gross Net carrying Accumulated carrying carrying Accumulated carrying amount amortization amount amount amortization amount Core deposit intangible $ 48,834 $ 39,807 $ 9,027 $ 48,834 $ 38,920 $ 9,914 The Company is amortizing the core deposit intangibles from acquisitions on a straight line basis over 7-10 years from the date of the respective acquisition, which represents the expected useful life of the assets. The Company recognized core deposit intangible amortization expense of $0.3 million and $0.9 million during the three and nine months ended September 30, 2019, respectively, and $0.5 million and $1.8 million during the three and nine months ended September 30, 2018, respectively. The following table shows the estimated future amortization expense for the core deposit intangibles as of September 30, 2019: Amount For the three months ending December 31, 2019 $ 296 For the year ending December 31, 2020 1,183 For the year ending December 31, 2021 1,183 For the year ending December 31, 2022 1,127 For the year ending December 31, 2023 1,048 Mortgage servicing rights Mortgage servicing rights represent rights to service loans originated by the Company and sold to government sponsored enterprises including FHLMC, FNMA, GNMA and FHLB. Mortgage loans serviced for others were $334.5 million and $404.5 million at 30, 2019 and 2018, respectively. Below are the changes in the mortgage servicing rights for the periods presented: For the nine months ended September 30, 2019 2018 Beginning balance $ 3,556 $ — Acquired through acquisition — 4,301 Originations 26 25 Impairment (453) (68) Amortization (578) (588) Ending balance $ 2,551 $ 3,670 Fair value of mortgage servicing rights $ 2,551 $ 4,351 The fair value of mortgage servicing rights was determined based upon a discounted cash flow analysis. The cash flow analysis included assumptions for discount rates and prepayment speeds. Discount rates ranged from 9.5% to 10.5% and the constant prepayment speed ranged from 17.9% to 26.7% for the September 30, 2019 valuation. Included in mortgage banking income in the consolidated statements of operations were service fees of $0.2 million and $0.7 million for the three and nine months ended September 30, 2019, respectively, and $0.2 million and $0.9 million for the three and nine months ended September 30, 2018, respectively. Mortgage servicing rights are evaluated and impairment is recognized to the extent fair value is less than the carrying amount. The Company evaluates impairment by type (FHLMC, FNMA, GNMA and FHLB) and interest rate. The Company is amortizing the mortgage servicing rights in proportion to and over the period of the estimated net servicing income of the underlying loans. The Company recognized mortgage servicing rights amortization expense of $0.2 million and $0.6 million for the three and nine months ended September 30, 2019, respectively, and $0.2 million and $0.6 million for the three and nine months ended September 30, 2018, respectively. The following table shows the estimated future amortization expense for the mortgage servicing rights as of September 30, 2019: Amount For the three months ending December 31, 2019 $ 141 For the year ending December 31, 2020 534 For the year ending December 31, 2021 416 For the year ending December 31, 2022 324 For the year ending December 31, 2023 252

Borrowings

Borrowings	9 Months Ended
Borrowings	Sep. 30, 2019
Borrowings
Borrowings	Note 9 Borrowings The Company enters into repurchase agreements to facilitate the needs of its clients. As of September 30, 2019 and December 31, 2018, the Company sold securities under agreements to repurchase totaling $62.7 million and $66.0 million, respectively, and none were for periods longer than one day. The Company pledged mortgage-backed securities with a fair value of approximately $73.2 million and $73.9 million as of September 30, 2019 and December 31, 2018, 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 September 30, 2019 and December 31, 2018, the Company had $8.6 million and $5.9 million of excess collateral pledged for repurchase agreements, respectively. 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 $1.0 billion at September 30, 2019. At September 30, 2019 and December 31, 2018, the Bank had $278.9 million and $234.3 million in line of credit advances from the FHLB, respectively, that mature within a day. At September 30, 2019, the Bank had one term advance totaling $15.0 million, which had a fixed interest rate of 2.33% and a maturity date in October 2020 . At December 31, 2018, the Bank had $67.3 million in term advances from the FHLB with fixed interest rates between 1.55% - 2.33% and maturity dates of 2019 - 2020 . The Bank had investment securities and loans pledged as collateral for FHLB advances. Investment securities pledged were $17.2 million at September 30, 2019 and $16.0 million at December 31, 2018. Loans pledged were $1.5 billion at September 30, 2019 and $1.6 billion at December 31, 2018. Interest expense related to FHLB advances and other short-term borrowings totaled $1.4 million and $4.8 million for the three and nine months ended September 30, 2019, respectively, and $0.6 million and $1.7 million for the three and nine months ended September 30, 2018, respectively.

Regulatory Capital

Regulatory Capital	9 Months Ended
Regulatory Capital	Sep. 30, 2019
Regulatory Capital
Regulatory Capital	Note 10 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 Basel III rules, effective January 1, 2015, changed the components of regulatory capital, changed the way in which risk ratings are assigned to various categories of bank assets and defined a new Tier 1 common risk-based ratio. In addition, a capital conservation buffer requirement, which was fully phased in on January 1, 2019, added a 2.5% capital requirement above existing regulatory minimum ratios. Under the Basel III requirements, at September 30, 2019 and December 31, 2018, 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, as detailed in the tables below. September 30, 2019 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 10.9% $ 625,512 N/A N/A 4.0% $ 229,652 NBH Bank 8.8% 506,485 5.0% $ 286,546 4.0% 229,237 Common equity tier 1 risk-based capital: Consolidated 12.9% $ 625,512 N/A N/A 7.0% $ 401,891 NBH Bank 10.5% 506,485 6.5% $ 372,510 7.0% 401,164 Tier 1 risk-based capital ratio: Consolidated 12.9% $ 625,512 N/A N/A 8.5% $ 411,179 NBH Bank 10.5% 506,485 8.0% $ 386,379 8.5% 410,527 Total risk-based capital ratio: Consolidated 13.8% $ 667,132 N/A N/A 10.5% $ 507,926 NBH Bank 11.4% 548,105 10.0% $ 482,973 10.5% 507,122 December 31, 2018 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized (1) Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated 10.5% $ 580,504 N/A N/A 4.0% $ 220,988 NBH Bank 9.0% 498,283 5.0% $ 275,703 4.0% 220,563 Common equity tier 1 risk-based capital: Consolidated 12.9% $ 580,504 N/A N/A 7.0% $ 386,728 NBH Bank 11.1% 498,283 6.5% $ 358,414 7.0% 385,984 Tier 1 risk-based capital ratio: Consolidated 12.9% $ 580,504 N/A N/A 8.5% $ 382,306 NBH Bank 11.1% 498,283 8.0% $ 358,938 8.5% 381,372 Total risk-based capital ratio: Consolidated 13.8% $ 620,275 N/A N/A 10.5% $ 472,261 NBH Bank 12.0% 538,054 10.0% $ 448,672 10.5% 471,106 (1) As of the fully phased-in date of January 1, 2019, including the capital conservation buffer.

Revenue from Contracts with Cli

Revenue from Contracts with Clients	9 Months Ended
Revenue from Contracts with Clients	Sep. 30, 2019
Revenue from Contracts with Clients
Revenue from Contracts with Clients	Note 11 Revenue from Contracts with Clients The Company recognizes revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers Service charges and other fees Service charge fees are primarily comprised of monthly service fees, check orders and other deposit account related fees. Other fees include revenue from processing Bank card fees Bank card fees are primarily comprised of debit card income, ATM fees, merchant services income and other fees. Debit card income is primarily comprised of interchange fees earned whenever the Bank’s debit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a Bank cardholder uses a non-Bank ATM or a non-Bank cardholder uses a Bank ATM. Merchant services income mainly represents fees charged to merchants to process their debit card transactions. The Company’s performance obligation for bank card fees are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Gain on OREO sales, net Gain on OREO Sales, net is recognized when the Company meets its performance obligation to transfer title to the buyer. The gain or loss is measured as the excess of the proceeds received compared to the OREO carrying value. Sales proceeds are received in cash at the time of transfer. The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, and non-interest expense in-scope of Topic 606 for the three and nine months ended September 30, 2019 and 2018. For the three months ended September 30, For the nine months ended September 30, 2019 2018 2019 2018 Non-interest income In-scope of Topic 606: Service Charges and other fees $ 5,112 $ 5,145 $ 14,822 $ 15,328 Bank card fees 3,752 3,686 10,946 10,720 Non-interest income (in-scope of Topic 606) 8,864 8,831 25,768 26,048 Non-interest income (out-of-scope of Topic 606) 15,895 9,230 36,702 29,410 Total non-interest income $ 24,759 $ 18,061 $ 62,470 $ 55,458 Non-interest expense In-scope of Topic 606: Gain on OREO sales, net 6,514 450 7,200 386 Total revenue in-scope of Topic 606 $ 15,378 $ 9,281 $ 32,968 $ 26,434 Contract balances A contract asset balance occurs when an entity performs a service for a client before the client pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a client for which the entity has already received payment (or payment is due) from the client. The Company’s non-interest revenue streams are largely based on transactional activity or standard month-end revenue accruals. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with clients, and therefore, does not experience significant contract balances. As of September 30, 2019 and December 31, 2018, the Company did not have any contract balances. Contract acquisition costs In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a client if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a client that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. The Company has not capitalized any contract acquisition costs.

Stock-based Compensation and Be

Stock-based Compensation and Benefits	9 Months Ended
Stock-based Compensation and Benefits	Sep. 30, 2019
Stock-based Compensation and Benefits
Stock-based Compensation and Benefits	Note 12 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 issues stock options, 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 or have vested on a graded basis over 1-3 years of continuous service and have 10-year contractual terms. The following table summarizes stock option activity for the nine months ended September 30, 2019: Weighted average Weighted remaining average contractual Aggregate exercise term in intrinsic Options price years value Outstanding at December 31, 2018 1,264,876 $ 22.33 3.92 $ 11,387 Granted 147,121 34.19 Exercised (705,135) 20.12 Forfeited (45,395) 31.10 Outstanding at September 30, 2019 661,467 $ 26.73 6.68 $ 4,970 Options exercisable at September 30, 2019 403,695 22.25 5.23 4,825 Options vested and expected to vest 629,815 26.37 6.56 4,956 Stock option expense is a component of salaries and benefits in the consolidated statements of operations and totaled $0.2 million and $0.2 million for the three months ended September 30, 2019 and 2018, respectively, and $0.5 million and $0.6 million for the nine months ended September 30, 2019 and 2018, respectively. At September 30, 2019, 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 2.2 years. Restricted stock awards The Company issues primarily time-based restricted stock awards that 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. Performance stock units The Company grants performance stock units which 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 nine months ended September 30, 2019 of the EPS target portion and the TSR target portion was $34.08 and $27.01, respectively. The following table summarizes restricted stock and performance stock unit activity during the nine months ended September 30, 2019: Weighted Weighted Restricted average grant- Performance average grant- stock shares date fair value stock units date fair value Unvested at December 31, 2018 146,494 $ 28.19 192,049 $ 26.40 Granted 84,520 35.04 60,781 30.85 Adjustment due to performance — — 22,246 17.36 Vested (73,879) 23.46 (95,308) 18.02 Forfeited (21,053) 32.17 (20,231) 31.50 Unvested at September 30, 2019 136,082 $ 34.40 159,537 $ 31.19 As of September 30, 2019, the total unrecognized compensation cost related to the non-vested restricted stock awards and performance stock units totaled $2.7 million and $2.9 million, respectively, and is expected to be recognized over a weighted average period of approximately 2.1 years and 1.9 years, respectively. Expense related to non-vested restricted stock awards totaled $0.7 million and $0.6 million during the three months ended September 30, 2019 and 2018, respectively, and $1.6 million and $1.6 million during the nine months ended September 30, 2019 and 2018, respectively. Expense related to non-vested performance stock units totaled $0.5 million and $0.4 million during the three months ended September 30, 2019 and 2018, respectively, and $1.2 million and $1.1 million during the nine months ended September 30, 2019 and 2018, respectively. Expense related to non-vested restricted stock awards and units 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 periods are the six-month periods commencing on March 1 and June 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 are 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 326,088 was available for issuance at September 30, 2019. Under the ESPP, employees purchased 16,556 shares and 12,515 shares during the nine months ended September 30, 2019 and 2018, respectively.

Common Stock

Common Stock	9 Months Ended
Common Stock	Sep. 30, 2019
Common Stock
Common Stock	Note 13 Common Stock The Company had 31,169,086 and 30,769,063 shares of Class A common stock outstanding at September 30, 2019 and December 31, 2018, respectively. Additionally, the Company had 136,082 and 146,494 shares outstanding at September 30, 2019 and December 31, 2018, respectively, of restricted Class A common stock issued but not yet vested under the 2014 Omnibus Incentive Plan that are not included in shares outstanding until such time that they are vested; however, these shares do have voting and certain dividend rights during the vesting period. On August 5, 2016, the Board of Directors authorized a new share repurchase program for up to $50.0 million from time to time in either the open market or through privately negotiated transactions. The remaining authorization under this program as of September 30, 2019 was $12.6 million.

Earnings Per Share

Earnings Per Share	9 Months Ended
Earnings Per Share	Sep. 30, 2019
Earnings Per Share
Earnings Per Share	Note 14 Earnings Per Share The Company calculates earnings 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 12. The Company had 31,169,086 and 30,759,595 shares of Class A common stock outstanding as of September 30, 2019 and 2018, 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 earnings per share because to do so would have been anti-dilutive for the three and nine months ended September 30, 2019 and 2018. The following table illustrates the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2019 and 2018: For the three months ended For the nine months ended September 30, 2019 September 30, 2018 September 30, 2019 September 30, 2018 Net income $ 21,642 $ 18,240 $ 60,846 $ 44,216 Less: income allocated to participating securities (25) (18) (69) (49) Income allocated to common shareholders $ 21,617 $ 18,222 $ 60,777 $ 44,167 Weighted average shares outstanding for basic earnings per common share 31,281,970 30,869,683 31,133,982 30,700,977 Dilutive effect of equity awards 227,029 671,033 403,352 687,809 Weighted average shares outstanding for diluted earnings per common share 31,508,999 31,540,716 31,537,334 31,388,786 Basic earnings per share $ 0.69 $ 0.59 $ 1.95 $ 1.44 Diluted earnings per share $ 0.69 $ 0.58 $ 1.93 $ 1.41 The Company had 661,467 and 1,262,077 outstanding stock options to purchase common stock at weighted average exercise prices of $26.73 and $22.29 per share at September 30, 2019 and 2018, 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. The Company had 295,619 and 348,337 unvested restricted shares and units issued as of September 30, 2019 and 2018, 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.

Derivatives

Derivatives	9 Months Ended
Derivatives	Sep. 30, 2019
Derivatives
Derivatives	Note 15 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 instruments on the balance sheet The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated statements of financial condition as of September 30, 2019 and December 31, 2018. Information about the valuation methods used to measure fair value is provided in note 17. Asset derivatives fair value Liability derivatives fair value Balance Sheet September 30, December 31, Balance Sheet September 30, December 31, location 2019 2018 Location 2019 2018 Derivatives designated as hedging instruments: Interest rate products Other assets $ 270 $ 17,436 Other liabilities $ 23,385 $ 228 Total derivatives designated as hedging instruments $ 270 $ 17,436 $ 23,385 $ 228 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 10,736 $ 3,191 Other liabilities $ 11,646 $ 3,349 Interest rate lock commitments Other assets 2,126 871 Other liabilities 250 72 Forward contracts Other assets 232 — Other liabilities 655 472 Total derivatives not designated as hedging instruments $ 13,094 $ 4,062 $ 12,551 $ 3,893 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 September 30, 2019, the Company had interest rate swaps with a notional amount of $427.2 million, which were designated as fair value hedges of interest rate risk. As of December 31, 2018, the Company had interest rate swaps with a notional amount of $473.4 million, which were designated as fair value hedges. These interest rate swaps were associated with $429.4 million and $522.7 million of the Company’s fixed-rate loans as of September 30, 2019 and December 31, 2018, respectively, before a $23.5 million and $13.2 million fair value loss hedge adjustment in the carrying amount as of September 30, 2019 and December 31, 2018, respectively. The Company’s fixed rate loans are included in loans receivable on the statements of financial condition. 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. 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 September 30, 2019, the Company had matched interest rate swap transactions with an aggregate notional amount of $462.4 million related to this program. As of December 31, 2018, the Company had matched interest rate swap transactions with an aggregate notional amount of $206.8 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 clients have locked into that interest rate. The Company then locks in the loan and interest rate with an investor and commits to deliver the loan if settlement occurs ("best efforts") or commits to deliver the locked loan in a binding ("mandatory") delivery program with an investor. Fair value changes of certain loans under interest rate lock commitments are hedged with forward sales contracts of MBS. Forward sales contracts of MBS are recorded at fair value with changes in fair value recorded in non-interest income. Interest rate lock commitments and commitments to deliver loans to investors are considered derivatives. The market value of interest rate lock commitments and best efforts contracts are not readily ascertainable with precision because they are not actively traded in stand-alone markets. The Company determines the fair value of interest rate lock commitments and delivery contracts by measuring the fair value of the underlying asset, which is impacted by current interest rates, taking into consideration the probability that the interest rate lock commitments will close or will be funded. Certain additional risks arise from these forward delivery contracts in that the counterparties to the contracts may not be able to meet the terms of the contracts. The Company does not expect any counterparty to any MBS contract to fail to meet its obligation. Additional risks inherent in mandatory delivery programs include the risk that, if the Company fails to deliver the loans subject to interest rate risk lock commitments, it will still be obligated to “pair off” MBS to the counterparty. Should this be required, the Company could incur significant costs in acquiring replacement loans and such costs could have an adverse effect on the consolidated financial statements. The fair value of the mortgage banking derivative is recorded as a freestanding asset or liability with the change in value being The Company had interest rate lock commitments with a notional value of $157.2 million and forward contracts with a notional value of $298.5 million at September 30, 2019. At December 31, 2018, the Company had interest rate lock commitments with a notional value of $50.1 million and forward contracts with a notional value of $77.6 million . Effect of derivative instruments on the consolidated statements of operations The tables below present the effect of the Company’s derivative financial instruments on the consolidated statements of operations for the three and nine months ended September 30, 2019 and 2018: 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 September 30, For the nine months ended September 30, hedging relationships derivatives 2019 2018 2019 2018 Interest rate products Interest and fees on loans $ 5,809 $ 4,516 $ (11,791) $ 21,856 Total $ 5,809 $ 4,516 $ (11,791) $ 21,856 Location of gain (loss) Amount of (loss) gain recognized in income on hedged items recognized in income on For the three months ended September 30, For the nine months ended September 30, Hedged items hedged items 2019 2018 2019 2018 Interest rate products Interest and fees on loans $ (3,313) $ (4,719) $ 11,604 $ (21,983) Total $ (3,313) $ (4,719) $ 11,604 $ (21,983) Location of gain (loss) Amount of (loss) gain recognized in income on derivatives Derivatives not designated recognized in income on For the three months ended September 30, For the nine months ended September 30, as hedging instruments derivatives 2019 2018 2019 2018 Interest rate products Other non-interest expense $ (198) $ 5 $ (761) $ (120) Interest rate lock commitments Mortgage banking income 522 (811) 2,290 (952) Forward contracts Mortgage banking income 348 (425) 49 988 Total $ 672 $ (1,231) $ 1,578 $ (84) 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 September 30, 2019, the termination value of derivatives in a net liability position related to these agreements was $36.8 million, 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 September 30, 2019, the Company had posted $39.1 million in eligible collateral. If the Company had breached any of these provisions at September 30, 2019, it could have been required to settle its obligations under the agreements at the termination value.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2019
Commitments and Contingencies
Commitments and Contingencies	Note 16 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 September 30, 2019 and December 31, 2018, the Company had loan commitments totaling $801.1 million and $773.5 million, respectively, and standby letters of credit that totaled $11.7 million and $10.6 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 September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 Commitments to fund loans $ 216,363 $ 183,946 Unfunded commitments under lines of credit 584,779 589,573 Commercial and standby letters of credit 11,705 10,558 Total unfunded commitments $ 812,847 $ 784,077 Commitments to fund loans Unfunded commitments under lines of credit Commercial and standby letters of credit Contingencies Mortgage loans sold to investors may be subject to repurchase or indemnification in the event of specific default by the borrower or subsequent discovery that underwriting standards were not met. The Company has established a reserve liability for expected losses related to these representations and warranties based upon management’s evaluation of actual and historic loss history, delinquency trends in the portfolio and economic conditions. The Company recorded a repurchase reserve of $2.5 million and $3.4 million at September 30, 2019 and December 31, 2018, respectively, which is included in other liabilities on the consolidated statements of financial condition. 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	9 Months Ended
Fair Value Measurements	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 17 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 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. While third party price indications may be available in those cases, limited trading activity can challenge the observability of those inputs. 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 nine months ended September 30, 2019 and 2018, 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 Loans held for sale Interest rate swap derivatives 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 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 September 30, 2019 and December 31, 2018 on the consolidated statements of financial condition utilizing the hierarchy structure described above: September 30, 2019 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 103,885 $ — $ 103,885 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 556,165 — 556,165 Municipal securities — 441 — 441 Loans held for sale — 204,602 — 204,602 Interest rate swap derivatives — 11,006 — 11,006 Mortgage banking derivatives — — 2,358 2,358 Total assets at fair value $ — $ 876,099 $ 2,358 $ 878,457 Liabilities: Interest rate swap derivatives $ — $ 35,031 $ — $ 35,031 Mortgage banking derivatives — — 905 905 Total liabilities at fair value $ — $ 35,031 $ 905 $ 35,936 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 146,642 $ — $ 146,642 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 643,381 — 643,381 Municipal securities — 441 — 441 Loans held for sale — 48,120 — 48,120 Interest rate swap derivatives — 20,627 — 20,627 Mortgage banking derivatives — — 871 871 Total assets at fair value $ — $ 859,211 $ 871 $ 860,082 Liabilities: Interest rate swap derivatives $ — $ 3,577 $ — $ 3,577 Mortgage banking derivatives — — 544 544 Total liabilities at fair value $ — $ 3,577 $ 544 $ 4,121 The table below details the changes in level 3 financial instruments during the nine months ended September 30, 2019: Mortgage banking derivatives, net Balance at December 31, 2018 $ 327 Gain included in earnings, net 2,339 Fees and costs included in earnings, net (1,213) Balance at September 30, 2019 $ 1,453 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. Impaired loans OREO Mortgage servicing rights M of these rights are reviewed quarterly for impairment based upon the calculation of fair value. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. The Company recognized $453 thousand of mortgage servicing rights impairment during the nine months ended September 30, 2019, which is included in mortgage banking income on the consolidated statements of operations. No impairment of mortgage servicing rights was recorded for the nine months ended September 30, 2018. The inputs used to determine the fair values of mortgage servicing rights are considered level 3 inputs in the fair value hierarchy. Premises and equipment The Company may be required to record fair value adjustments on other available-for-sale and municipal securities valued at par on a non-recurring basis. The table below provides information regarding the assets recorded at fair value on a non-recurring basis during the nine months ended September 30, 2019 and 2018: September 30, 2019 Total Losses from fair value changes Impaired loans $ 37,002 $ 7,571 Other real estate owned 7,904 872 Premises and equipment 3,385 898 Mortgage servicing rights 2,879 453 Total $ 51,170 $ 9,794 September 30, 2018 Total Losses from fair value changes Impaired loans $ 34,578 $ 1,482 Other real estate owned 35,135 220 Mortgage servicing rights 3,670 68 Total $ 73,383 $ 1,770 The Company did not record any liabilities measured at fair value on a non-recurring basis during the nine months ended September 30, 2019.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
Fair Value of Financial Instruments	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 18 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 estimated fair value amounts have been determined by the Company using available market information and appropriate valuation methodologies and are based on the exit price concept within ASC Topic 825 and applied to this disclosure on a prospective basis. Considerable judgment is required to interpret market data in order to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in a current market exchange. The fair value of financial instruments at September 30, 2019 and December 31, 2018, including methods and assumptions utilized for determining fair value of financial instruments are set forth below: Level in fair value September 30, 2019 December 31, 2018 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 116,919 $ 116,919 $ 109,556 $ 109,556 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 103,885 103,885 146,642 146,642 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 556,165 556,165 643,381 643,381 Municipal securities Level 2 441 441 441 441 Municipal securities Level 3 169 169 169 169 Other available-for-sale securities Level 3 469 469 469 469 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 127,008 127,972 157,115 154,412 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 62,974 62,679 78,283 76,514 Non-marketable securities Level 2 27,277 27,277 27,555 27,555 Loans receivable Level 3 4,401,917 4,518,410 4,092,308 4,082,146 Loans held for sale Level 2 204,602 204,602 48,120 48,120 Accrued interest receivable Level 2 22,936 22,936 17,852 17,852 Interest rate swap derivatives Level 2 11,006 11,006 20,627 20,627 Mortgage banking derivatives Level 3 2,358 2,358 871 871 LIABILITIES Deposit transaction accounts Level 2 3,666,559 3,666,559 3,445,092 3,445,092 Time deposits Level 2 1,067,301 1,067,793 1,080,529 1,068,233 Securities sold under agreements to repurchase Level 2 62,735 62,735 66,047 66,047 Federal Home Loan Bank advances Level 2 303,897 304,184 301,660 301,933 Accrued interest payable Level 2 9,508 9,508 6,889 6,889 Interest rate swap derivatives Level 2 35,031 35,031 3,577 3,577 Mortgage banking derivatives Level 3 905 905 544 544

Acquisition Activities

Acquisition Activities	9 Months Ended
Acquisition Activities	Sep. 30, 2019
Acquisition Activities
Acquisition Activities	Note 19 Acquisition Activities On January 1, 2018, the Company completed its acquisition of Peoples, Inc., the bank holding company of Colorado-based Peoples National Bank and Kansas-based Peoples Bank. Immediately following the completion of the acquisition, Peoples National Bank and Peoples Bank merged into NBH Bank. Pursuant to the merger agreement executed in June 2017, the Company paid $36.2 million of cash consideration and 3,398,477 shares of the Company’s Class A common stock in exchange for all of the outstanding common stock of Peoples. Included in the cash consideration is $10.0 million of restricted cash placed in escrow for certain potential liabilities the Company is indemnified for pursuant to the merger agreement. The restricted cash is included in other assets in the Company’s consolidated statements of financial condition at September 30, 2019. The transaction was valued at $146.4 million in the aggregate, based on the Company’s closing price of $32.43 on the acquisition date. Acquisition-related costs of $0.0 million and $8.0 million on a pre-tax basis were included in the Company’s consolidated statements of operations for the three and nine months ended September 30, 2018. The results of Peoples are included in the results of the Company subsequent to the acquisition date. The Company determined that this acquisition constitutes a business combination as defined in ASC Topic 805, Business Combinations Fair Value Measurements and Disclosures The table below summarizes the net assets acquired (at fair value) and consideration transferred in connection with the Peoples acquisition: Assets: Cash and due from banks $ 105,173 Investment securities available-for-sale 118,512 Non-marketable securities 4,796 Loans 542,707 Loans held for sale 54,260 Other real estate owned 1,253 Premises and equipment 18,584 Core deposit intangible asset 10,477 Mortgage servicing rights 4,301 Other assets 15,361 Total assets acquired $ 875,424 Liabilities: Total deposits 729,911 FHLB borrowings 33,825 Other liabilities 20,683 Total liabilities assumed $ 784,419 Identifiable net assets acquired $ 91,005 Consideration: NBHC common stock paid at January 1, 2018, closing price of $32.43 $ 110,213 Cash 36,189 Total $ 146,402 Goodwill $ 55,397 In connection with the Peoples acquisition, the Company recorded $55.4 million of goodwill, a $10.5 million core deposit intangible asset, a $4.3 million mortgage servicing rights intangible asset and a $4.0 million mortgage repurchase reserve, included in other liabilities. The core deposit intangible is being amortized straight-line over ten years and the mortgage servicing rights intangible is amortized in proportion to and over the period of the estimated net servicing income. The FHLB borrowings of $33.8 million were paid off during the first quarter of 2018. The goodwill associated with this transaction is not tax deductible. At the date of acquisition, the gross contractual amounts receivable, inclusive of all principal and interest, was $713.6 million. The Company’s best estimate of the contractual principal cash flows for loans not expected to be collected was $2.1 million.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
Investment Securities (Tables)	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	At September 30, 2019 and December 31, 2018, the Company held $661.1 million and $791.1 million of available-for-sale investment securities, respectively. Available-for-sale securities are summarized as follows as of the dates indicated: September 30, 2019 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 $ 102,354 $ 1,581 $ (50) $ 103,885 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 556,400 4,873 (5,107) 556,165 Municipal securities 619 — (9) 610 Other securities 469 — — 469 Total investment securities available-for-sale $ 659,842 $ 6,454 $ (5,167) $ 661,129 December 31, 2018 Amortized Gross Gross cost unrealized gains unrealized losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 147,283 $ 1,232 $ (1,873) $ 146,642 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 661,354 1,056 (19,029) 643,381 Municipal securities 619 — (9) 610 Other securities 469 — — 469 Total investment securities available-for-sale $ 809,725 $ 2,288 $ (20,911) $ 791,102
Summary of unrealized losses for available-for-sale securities	The tables below summarize the available-for-sale securities with unrealized losses as of the dates shown, along with the length of the impairment period: September 30, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 10,879 $ (33) $ 4,623 $ (17) $ 15,501 $ (50) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 9,143 (19) 273,284 (5,088) 282,426 (5,107) Municipal securities — — 441 (9) 441 (9) Total $ 20,021 $ (53) $ 278,347 $ (5,114) $ 298,369 $ (5,167) December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 30,853 $ (392) $ 69,169 $ (1,481) $ 100,022 $ (1,873) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 127,767 (1,150) 454,662 (17,879) 582,429 (19,029) Municipal securities 441 (9) — — 441 (9) Total $ 159,061 $ (1,551) $ 523,831 $ (19,360) $ 682,892 $ (20,911)
Held-to-maturity Securities	At September 30, 2019 and December 31, 2018, the Company held $190.0 million and $235.4 million of held-to-maturity investment securities, respectively. Held-to-maturity investment securities are summarized as follows as of the dates indicated: September 30, 2019 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 127,008 $ 976 $ (13) $ 127,972 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 62,974 162 (457) 62,679 Total investment securities held-to-maturity $ 189,982 $ 1,139 $ (470) $ 190,651 December 31, 2018 Gross Gross Amortized unrealized unrealized cost gains losses Fair value Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 157,115 $ 2 $ (2,705) $ 154,412 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 78,283 — (1,769) 76,514 Total investment securities held-to-maturity $ 235,398 $ 2 $ (4,474) $ 230,926
Summary of unrealized losses for held-to-maturity securities	The tables below summarize the held-to-maturity securities with unrealized losses as of the dates shown, along with the length of the impairment period: September 30, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 397 $ (1) $ 4,819 $ (12) $ 5,216 $ (13) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 4,154 (11) 30,872 (446) 35,026 (457) Total $ 4,551 $ (12) $ 35,691 $ (458) $ 40,242 $ (470) December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized value losses value losses value losses Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ 26,660 $ (381) $ 126,475 $ (2,324) $ 153,135 $ (2,705) Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises 35,235 (79) 41,279 (1,690) 76,514 (1,769) Total $ 61,895 $ (460) $ 167,754 $ (4,014) $ 229,649 $ (4,474)

Loans (Tables)

Loans (Tables)	9 Months Ended
Loans (Tables)	Sep. 30, 2019
Receivables [Abstract]
Loan Portfolio Composition Including Carrying Value by Segment of Originated and Acquired Loans Accounted for under ASC Topic 310-30 and Loans Covered by the FDIC Loss Sharing Agreements	The loan portfolio is comprised of loans originated by the Company and loans that were acquired in connection with the Company’s acquisitions. The tables below show the loan portfolio composition including carrying value by segment of originated and acquired loans and loans accounted for under ASC 310-30, Receivables—Loans and Debt Securities Acquired with Deteriorated Credit Quality September 30, 2019 Originated and ASC acquired loans 310-30 loans Total loans % of total Commercial $ 2,932,205 $ 16,262 $ 2,948,467 67.0% Commercial real estate non-owner occupied 606,720 34,460 641,180 14.6% Residential real estate 783,600 6,477 790,077 17.9% Consumer 22,193 — 22,193 0.5% Total $ 4,344,718 $ 57,199 $ 4,401,917 100.0% December 31, 2018 Originated and ASC acquired loans 310-30 loans Total loans % of total Commercial $ 2,624,173 $ 20,398 $ 2,644,571 64.6% Commercial real estate non-owner occupied 551,819 40,393 592,212 14.5% Residential real estate 820,820 9,995 830,815 20.3% Consumer 24,617 93 24,710 0.6% Total $ 4,021,429 $ 70,879 $ 4,092,308 100.0%
Past Due Financing Receivables	Delinquency for originated and acquired loans is shown in the following tables at September 30, 2019 and December 31, 2018: September 30, 2019 Greater 30-89 days than 90 days Total past Total past due and past due and Non-accrual due and originated and accruing accruing loans non-accrual Current acquired loans Originated and acquired loans: Commercial: Commercial and industrial $ 4,842 $ 1,968 $ 9,880 $ 16,690 $ 2,187,999 $ 2,204,689 Owner occupied commercial real estate — — 4,001 4,001 442,628 446,629 Food and agriculture 111 — 358 469 234,116 234,585 Energy — — 915 915 45,387 46,302 Total commercial 4,953 1,968 15,154 22,075 2,910,130 2,932,205 Commercial real estate non-owner occupied: Construction — — 385 385 85,658 86,043 Acquisition/development 152 — 731 883 15,632 16,515 Multifamily — — — — 68,953 68,953 Non-owner occupied 100 — 379 479 434,730 435,209 Total commercial real estate 252 — 1,495 1,747 604,973 606,720 Residential real estate: Senior lien 1,054 — 7,828 8,882 678,509 687,391 Junior lien 349 — 867 1,216 94,993 96,209 Total residential real estate 1,403 — 8,695 10,098 773,502 783,600 Consumer 115 — 54 169 22,024 22,193 Total originated and acquired loans $ 6,723 $ 1,968 $ 25,398 $ 34,089 $ 4,310,629 $ 4,344,718 December 31, 2018 Greater 30-89 days than 90 days Total past Total past due and past due and Non-accrual due and originated and accruing accruing loans non-accrual Current acquired loans Originated and acquired loans: Commercial: Commercial and industrial $ 495 $ 74 $ 5,510 $ 6,079 $ 1,925,068 $ 1,931,147 Owner occupied commercial real estate 893 — 6,931 7,824 413,842 421,666 Food and agriculture 141 125 768 1,034 221,122 222,156 Energy — — 742 742 48,462 49,204 Total commercial 1,529 199 13,951 15,679 2,608,494 2,624,173 Commercial real estate non-owner occupied: Construction — — 1,208 1,208 93,646 94,854 Acquisition/development — — 121 121 19,529 19,650 Multifamily — — — — 56,685 56,685 Non-owner occupied 328 132 572 1,032 379,598 380,630 Total commercial real estate 328 132 1,901 2,361 549,458 551,819 Residential real estate: Senior lien 2,106 548 7,790 10,444 712,592 723,036 Junior lien 556 — 772 1,328 96,456 97,784 Total residential real estate 2,662 548 8,562 11,772 809,048 820,820 Consumer 91 16 42 149 24,468 24,617 Total originated and acquired loans $ 4,610 $ 895 $ 24,456 $ 29,961 $ 3,991,468 $ 4,021,429
Credit Exposure for Loans as Determined by Company's Internal Risk Rating System	Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows as of September 30, 2019 and December 31, 2018, respectively: September 30, 2019 Special Pass mention Substandard Doubtful Total Originated and acquired loans: Commercial: Commercial and industrial $ 2,165,513 $ 22,809 $ 14,893 $ 1,474 $ 2,204,689 Owner occupied commercial real estate 411,851 25,351 9,345 82 446,629 Food and agriculture 217,305 16,143 1,104 33 234,585 Energy 45,387 — 915 — 46,302 Total commercial 2,840,056 64,303 26,257 1,589 2,932,205 Commercial real estate non-owner occupied: Construction 85,658 — 385 — 86,043 Acquisition/development 15,744 — 771 — 16,515 Multifamily 68,459 — 494 — 68,953 Non-owner occupied 420,362 13,782 950 115 435,209 Total commercial real estate 590,223 13,782 2,600 115 606,720 Residential real estate: Senior lien 678,576 82 8,733 — 687,391 Junior lien 94,813 426 970 — 96,209 Total residential real estate 773,389 508 9,703 — 783,600 Consumer 22,139 — 54 — 22,193 Total originated and acquired loans $ 4,225,807 $ 78,593 $ 38,614 $ 1,704 $ 4,344,718 Loans accounted for under ASC 310-30: Commercial $ 13,722 $ 495 $ 2,045 $ — $ 16,262 Commercial real estate non-owner occupied 33,577 222 661 — 34,460 Residential real estate 4,851 368 1,258 — 6,477 Consumer — — — — — Total loans accounted for under ASC 310-30 $ 52,150 $ 1,085 $ 3,964 $ — $ 57,199 Total loans $ 4,277,957 $ 79,678 $ 42,578 $ 1,704 $ 4,401,917 December 31, 2018 Special Pass mention Substandard Doubtful Total Originated and acquired loans: Commercial: Commercial and industrial $ 1,890,710 $ 16,531 $ 22,919 $ 987 $ 1,931,147 Owner occupied commercial real estate 393,404 16,349 11,828 85 421,666 Food and agriculture 220,004 1,260 847 45 222,156 Energy 48,462 — 742 — 49,204 Total commercial 2,552,580 34,140 36,336 1,117 2,624,173 Commercial real estate non-owner occupied: Construction 92,731 915 1,208 — 94,854 Acquisition/development 19,529 — 121 — 19,650 Multifamily 56,685 — — — 56,685 Non-owner occupied 355,776 23,243 1,611 — 380,630 Total commercial real estate 524,721 24,158 2,940 — 551,819 Residential real estate: Senior lien 710,972 3,571 8,493 — 723,036 Junior lien 96,456 415 913 — 97,784 Total residential real estate 807,428 3,986 9,406 — 820,820 Consumer 24,575 — 42 — 24,617 Total originated and acquired loans $ 3,909,304 $ 62,284 $ 48,724 $ 1,117 $ 4,021,429 Loans accounted for under ASC 310-30: Commercial $ 17,579 $ 537 $ 2,282 $ — $ 20,398 Commercial real estate non-owner occupied 39,322 246 825 — 40,393 Residential real estate 7,484 908 1,603 — 9,995 Consumer — — 93 — 93 Total loans accounted for under ASC 310-30 $ 64,385 $ 1,691 $ 4,803 $ — $ 70,879 Total loans $ 3,973,689 $ 63,975 $ 53,527 $ 1,117 $ 4,092,308
Schedule Of Impaired Financing Receivable With And Without Related Allowance	Additional information regarding impaired loans at September 30, 2019 and December 31, 2018 is set forth in the table below: September 30, 2019 December 31, 2018 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 $ 17,772 $ 10,982 $ — $ 4,374 $ 3,029 $ — Owner occupied commercial real estate 4,129 3,716 — 7,130 6,609 — Food and agriculture 1,468 1,220 — 1,468 1,260 — Energy 5,539 915 — 5,366 742 — Total commercial 28,908 16,833 — 18,338 11,640 — Commercial real estate non-owner occupied: Construction 389 385 — 1,435 1,208 — Acquisition/development 763 731 — 378 121 — Multifamily — — — — — — Non-owner occupied 90 26 — 641 547 — Total commercial real estate 1,242 1,142 — 2,454 1,876 — Residential real estate: Senior lien 4,660 4,339 — 4,229 3,814 — Junior lien 355 320 — 409 341 — Total residential real estate 5,015 4,659 — 4,638 4,155 — Consumer 60 54 — 46 42 — Total impaired loans with no related allowance recorded $ 35,225 $ 22,688 $ — $ 25,476 $ 17,713 $ — With a related allowance recorded: Commercial: Commercial and industrial $ 8,679 $ 5,959 $ 1,486 $ 7,252 $ 4,627 $ 996 Owner occupied commercial real estate 1,263 1,045 86 1,362 1,169 90 Food and agriculture 798 792 36 883 845 46 Energy — — — — — — Total commercial 10,740 7,796 1,608 9,497 6,641 1,132 Commercial real estate non-owner occupied: Construction — — — — — — Acquisition/development — — — — — — Multifamily — — — — — — Non-owner occupied 590 525 117 313 254 2 Total commercial real estate 590 525 117 313 254 2 Residential real estate: Senior lien 5,900 4,974 24 6,032 5,178 27 Junior lien 1,153 1,019 7 1,408 1,293 8 Total residential real estate 7,053 5,993 31 7,440 6,471 35 Consumer — — — — — — Total impaired loans with a related allowance recorded $ 18,383 $ 14,314 $ 1,756 $ 17,250 $ 13,366 $ 1,169 Total impaired loans $ 53,608 $ 37,002 $ 1,756 $ 42,726 $ 31,079 $ 1,169
Schedule of Impaired Financing Receivable, Average Recorded Investment and Interest Income Recognized	The tables below show additional information regarding the average recorded investment and interest income recognized on impaired loans for the periods presented: For the three months ended September 30, 2019 September 30, 2018 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 11,808 $ 41 $ 4,518 $ 68 Owner occupied commercial real estate 3,656 7 7,278 17 Food and agriculture 1,220 — 1,259 — Energy 909 — 2,044 15 Total commercial 17,593 48 15,099 100 Commercial real estate non-owner occupied: Construction 257 — 1,081 — Acquisition/development 491 — 590 — Multifamily — — — — Non-owner occupied 27 — 559 — Total commercial real estate 775 — 2,230 — Residential real estate: Senior lien 4,313 1 3,062 — Junior lien 323 1 316 1 Total residential real estate 4,636 2 3,378 1 Consumer 10 — 12 — Total impaired loans with no related allowance recorded $ 23,014 $ 50 $ 20,719 $ 101 With a related allowance recorded: Commercial: Commercial and industrial $ 5,908 $ — $ 5,015 $ — Owner occupied commercial real estate 1,060 6 1,205 5 Food and agriculture 799 3 853 1 Energy — — — — Total commercial 7,767 9 7,073 6 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 528 2 277 4 Total commercial real estate 528 2 277 4 Residential real estate: Senior lien 5,004 15 5,351 17 Junior lien 1,029 7 1,250 16 Total residential real estate 6,033 22 6,601 33 Consumer 40 — 35 — Total impaired loans with a related allowance recorded $ 14,368 $ 33 $ 13,986 $ 44 Total impaired loans $ 37,382 $ 83 $ 34,705 $ 145 For the nine months ended September 30, 2019 September 30, 2018 Average Interest Average Interest With no related allowance recorded: Commercial: Commercial and industrial $ 6,569 $ 129 $ 5,206 $ 241 Owner occupied commercial real estate 3,345 20 7,415 52 Food and agriculture 1,348 — 1,259 6 Energy 839 — 2,080 52 Total Commercial 12,101 149 15,960 351 Commercial real estate non-owner occupied: Construction 86 — 1,081 — Acquisition/development 170 — 768 — Multifamily — — — — Non-owner occupied 29 — 580 — Total commercial real estate 285 — 2,429 — Residential real estate: Senior lien 3,677 1 3,118 — Junior lien 334 2 323 1 Total residential real estate 4,010 3 3,441 1 Consumer 11 — 13 — Total impaired loans with no related allowance recorded $ 16,408 $ 152 $ 21,843 $ 352 With a related allowance recorded: Commercial: Commercial and industrial $ 5,286 $ — $ 5,175 $ — Owner occupied commercial real estate 1,093 18 1,234 14 Food and agriculture 630 7 866 4 Energy — — — — Total Commercial 7,010 25 7,275 18 Commercial real estate non-owner occupied: Construction — — — — Acquisition/development — — — — Multifamily — — — — Non-owner occupied 511 11 297 14 Total commercial real estate 511 11 297 14 Residential real estate: Senior lien 4,813 43 5,503 43 Junior lien 1,009 22 1,273 35 Total residential real estate 5,822 65 6,776 78 Consumer 43 — 38 — Total impaired loans with a related allowance recorded $ 13,386 $ 101 $ 14,386 $ 109 Total impaired loans $ 29,794 $ 253 $ 36,229 $ 461
Additional Information Related to Accruing TDR's	During the nine months ended September 30, 2019, the Company restructured 15 loans with a recorded investment of $8.2 million at September 30, 2019 to facilitate repayment. 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 tables below provide additional information related to accruing TDRs at September 30, 2019 and December 31, 2018: September 30, 2019 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investment principal balance to fund TDRs Commercial $ 6,085 $ 1,738 $ 6,207 $ 151 Commercial real estate non-owner occupied 159 181 210 — Residential real estate 1,140 1,124 1,172 12 Consumer — — — — Total $ 7,384 $ 3,043 $ 7,589 $ 163 December 31, 2018 Recorded Average year-to-date Unpaid Unfunded commitments investment recorded investment principal balance to fund TDRs Commercial $ 2,730 $ 2,827 $ 3,155 $ — Commercial real estate non-owner occupied 229 260 280 — Residential real estate 1,114 1,163 1,121 12 Consumer — — — — Total $ 4,073 $ 4,250 $ 4,556 $ 12
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 September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 Commercial $ 2,392 $ 1,854 Commercial real estate non-owner occupied 1,109 — Residential real estate 2,630 1,584 Consumer — — Total non-accruing TDRs $ 6,131 $ 3,438
Re-Measurement of Loans Accounted for Under ASC Topic 310-30 Resulting in Changes in Carrying Amount of Accretable Yield	September 30, 2019 September 30, 2018 Accretable yield beginning balance $ 35,901 $ 46,568 Reclassification from non-accretable difference 6,195 10,070 Reclassification to non-accretable difference (921) (1,929) Accretion (10,232) (15,009) Accretable yield ending balance $ 30,943 $ 39,700
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 September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 Contractual cash flows $ 397,081 $ 420,994 Non-accretable difference (308,939) (314,214) Accretable yield (30,943) (35,901) Loans accounted for under ASC 310-30 $ 57,199 $ 70,879

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	9 Months Ended
Allowance for Loan Losses (Tables)	Sep. 30, 2019
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 and recorded investment in loans as of and for the three and nine months ended September 30, 2019 and 2018: Three months ended September 30, 2019 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 30,823 $ 5,067 $ 3,851 $ 341 $ 40,082 Originated and acquired beginning balance 30,642 5,067 3,841 341 39,891 Charge-offs (6,760) (1) (77) (263) (7,101) Recoveries 2 — 3 34 39 Provision 5,731 (11) (204) 185 5,701 Originated and acquired ending balance 29,615 5,055 3,563 297 38,530 ASC 310-30 beginning balance 181 — 10 — 191 Charge-offs — — — — — Recoveries — — — — — Recoupment (1) — (10) — (11) ASC 310-30 ending balance 180 — — — 180 Ending balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Three months ended September 30, 2018 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 23,582 $ 4,561 $ 3,781 $ 306 $ 32,230 Originated and acquired beginning balance 23,400 4,542 3,781 306 32,029 Charge-offs — — (13) (381) (394) Recoveries 1,097 — 2 71 1,170 Provision 606 (78) (49) 322 801 Originated and acquired ending balance 25,103 4,464 3,721 318 33,606 ASC 310-30 beginning balance 182 19 — — 201 Charge-offs — — — — — Recoveries — — — — — Provision (recoupment) 9 (3) — — 6 ASC 310-30 ending balance 191 16 — — 207 Ending balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Nine months ended September 30, 2019 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 27,137 $ 4,406 $ 3,800 $ 349 $ 35,692 Originated and acquired beginning balance 26,946 4,406 3,760 349 35,461 Charge-offs (6,841) (1) (124) (696) (7,662) Recoveries 31 11 32 143 217 Provision 9,479 639 (105) 501 10,514 Originated and acquired ending balance 29,615 5,055 3,563 297 38,530 ASC 310-30 beginning balance 191 — 40 — 231 Charge-offs — — — — — Recoveries — — — — — Recoupment (11) — (40) — (51) ASC 310-30 ending balance 180 — — — 180 Ending balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Ending allowance balance attributable to: Originated and acquired loans individually evaluated for impairment $ 1,608 $ 117 $ 31 $ — $ 1,756 Originated and acquired loans collectively evaluated for impairment 28,007 4,938 3,532 297 36,774 ASC 310-30 loans 180 — — — 180 Total ending allowance balance $ 29,795 $ 5,055 $ 3,563 $ 297 $ 38,710 Loans: Originated and acquired loans individually evaluated for impairment $ 24,630 $ 1,667 $ 10,652 $ 54 $ 37,003 Originated and acquired loans collectively evaluated for impairment 2,907,575 605,053 772,948 22,139 4,307,715 ASC 310-30 loans 16,262 34,460 6,477 — 57,199 Total loans $ 2,948,467 $ 641,180 $ 790,077 $ 22,193 $ 4,401,917 Nine months ended September 30, 2018 Non-owner occupied commercial Residential Commercial real estate real estate Consumer Total Beginning balance $ 21,385 $ 5,609 $ 3,965 $ 305 $ 31,264 Originated and acquired beginning balance 21,340 5,583 3,965 305 31,193 Charge-offs (437) (11) (103) (894) (1,445) Recoveries 1,152 — 8 174 1,334 Provision 3,048 (1,108) (149) 733 2,524 Originated and acquired ending balance 25,103 4,464 3,721 318 33,606 ASC 310-30 beginning balance 45 26 — — 71 Charge-offs (61) — — — (61) Recoveries — — — — — Provision (recoupment) 207 (10) — — 197 ASC 310-30 ending balance 191 16 — — 207 Ending balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Ending allowance balance attributable to: Originated and acquired loans individually evaluated for impairment $ 1,446 $ 2 $ 36 $ — $ 1,484 Originated and acquired loans collectively evaluated for impairment 23,657 4,462 3,685 318 32,122 ASC 310-30 loans 191 16 — — 207 Total ending allowance balance $ 25,294 $ 4,480 $ 3,721 $ 318 $ 33,813 Loans: Originated and acquired loans individually evaluated for impairment $ 22,585 $ 2,034 $ 4,319 $ 5,640 $ 34,578 Originated and acquired loans collectively evaluated for impairment 2,397,248 567,367 810,187 21,010 3,795,812 ASC 310-30 loans 22,258 41,842 10,721 100 74,921 Total loans $ 2,442,091 $ 611,243 $ 825,227 $ 26,750 $ 3,905,311

Leases (Tables)

Leases (Tables)	9 Months Ended
Leases (Tables)	Sep. 30, 2019
Leases
Summary of future minimum lease payments	Amount For the three months ending December 31, 2019 $ 1,411 For the year ending December 31, 2020 5,435 For the year ending December 31, 2021 5,148 For the year ending December 31, 2022 4,643 For the year ending December 31, 2023 4,330 Thereafter 19,323 Total lease payments 40,290 Less: Imputed interest 9,392 Present value of operating lease liabilities $ 30,898
Summary of Future Minimum Lease Payments	Years ending December 31, Amount 2019 $ 3,092 2020 2,981 2021 3,091 2022 3,052 2023 2,047 Thereafter 10,163 Total $ 24,426

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
Other Real Estate Owned (Tables)	Sep. 30, 2019
Other Real Estate Owned
Summary of Activity in OREO Balances	A summary of the activity in OREO during the nine months ended September 30, 2019 and 2018 is as follows: For the nine months ended September 30, 2019 2018 Beginning balance $ 10,596 $ 10,491 Acquired through acquisition — 1,253 Transfers from loan portfolio, at fair value 2,488 24,919 Impairments (872) (220) Sales (4,308) (1,308) Ending balance $ 7,904 $ 35,135

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
Goodwill and Intangible Assets (Tables)	Sep. 30, 2019
Summary of gross carrying amount of intangible assets and the associated accumulated amortization	September 30, 2019 December 31, 2018 Gross Net Gross Net carrying Accumulated carrying carrying Accumulated carrying amount amortization amount amount amortization amount Core deposit intangible $ 48,834 $ 39,807 $ 9,027 $ 48,834 $ 38,920 $ 9,914
Summary of changes in the mortgage servicing rights	For the nine months ended September 30, 2019 2018 Beginning balance $ 3,556 $ — Acquired through acquisition — 4,301 Originations 26 25 Impairment (453) (68) Amortization (578) (588) Ending balance $ 2,551 $ 3,670 Fair value of mortgage servicing rights $ 2,551 $ 4,351
Core Deposits
Summary of estimated future amortization expense for the next five fiscal years	The following table shows the estimated future amortization expense for the core deposit intangibles as of September 30, 2019: Amount For the three months ending December 31, 2019 $ 296 For the year ending December 31, 2020 1,183 For the year ending December 31, 2021 1,183 For the year ending December 31, 2022 1,127 For the year ending December 31, 2023 1,048
Mortgage servicing rights
Summary of estimated future amortization expense for the next five fiscal years	The following table shows the estimated future amortization expense for the mortgage servicing rights as of September 30, 2019: Amount For the three months ending December 31, 2019 $ 141 For the year ending December 31, 2020 534 For the year ending December 31, 2021 416 For the year ending December 31, 2022 324 For the year ending December 31, 2023 252

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
Regulatory Capital (Tables)	Sep. 30, 2019
Regulatory Capital
Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements	September 30, 2019 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 10.9% $ 625,512 N/A N/A 4.0% $ 229,652 NBH Bank 8.8% 506,485 5.0% $ 286,546 4.0% 229,237 Common equity tier 1 risk-based capital: Consolidated 12.9% $ 625,512 N/A N/A 7.0% $ 401,891 NBH Bank 10.5% 506,485 6.5% $ 372,510 7.0% 401,164 Tier 1 risk-based capital ratio: Consolidated 12.9% $ 625,512 N/A N/A 8.5% $ 411,179 NBH Bank 10.5% 506,485 8.0% $ 386,379 8.5% 410,527 Total risk-based capital ratio: Consolidated 13.8% $ 667,132 N/A N/A 10.5% $ 507,926 NBH Bank 11.4% 548,105 10.0% $ 482,973 10.5% 507,122 December 31, 2018 Required to be Required to be well capitalized under considered prompt corrective adequately Actual action provisions capitalized (1) Ratio Amount Ratio Amount Ratio Amount Tier 1 leverage ratio: Consolidated 10.5% $ 580,504 N/A N/A 4.0% $ 220,988 NBH Bank 9.0% 498,283 5.0% $ 275,703 4.0% 220,563 Common equity tier 1 risk-based capital: Consolidated 12.9% $ 580,504 N/A N/A 7.0% $ 386,728 NBH Bank 11.1% 498,283 6.5% $ 358,414 7.0% 385,984 Tier 1 risk-based capital ratio: Consolidated 12.9% $ 580,504 N/A N/A 8.5% $ 382,306 NBH Bank 11.1% 498,283 8.0% $ 358,938 8.5% 381,372 Total risk-based capital ratio: Consolidated 13.8% $ 620,275 N/A N/A 10.5% $ 472,261 NBH Bank 12.0% 538,054 10.0% $ 448,672 10.5% 471,106 (1) As of the fully phased-in date of January 1, 2019, including the capital conservation buffer.

Revenue from Contracts with C_2

Revenue from Contracts with Clients (Tables)	9 Months Ended
Revenue from Contracts with Clients (Tables)	Sep. 30, 2019
Revenue from Contracts with Clients
Summary of non-interest income segregated by revenue streams	The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, and non-interest expense in-scope of Topic 606 for the three and nine months ended September 30, 2019 and 2018. For the three months ended September 30, For the nine months ended September 30, 2019 2018 2019 2018 Non-interest income In-scope of Topic 606: Service Charges and other fees $ 5,112 $ 5,145 $ 14,822 $ 15,328 Bank card fees 3,752 3,686 10,946 10,720 Non-interest income (in-scope of Topic 606) 8,864 8,831 25,768 26,048 Non-interest income (out-of-scope of Topic 606) 15,895 9,230 36,702 29,410 Total non-interest income $ 24,759 $ 18,061 $ 62,470 $ 55,458 Non-interest expense In-scope of Topic 606: Gain on OREO sales, net 6,514 450 7,200 386 Total revenue in-scope of Topic 606 $ 15,378 $ 9,281 $ 32,968 $ 26,434

Stock-based Compensation and _2

Stock-based Compensation and Benefits (Tables)	9 Months Ended
Stock-based Compensation and Benefits (Tables)	Sep. 30, 2019
Stock-based Compensation and Benefits
Summary of outstanding stock options	The following table summarizes stock option activity for the nine months ended September 30, 2019: Weighted average Weighted remaining average contractual Aggregate exercise term in intrinsic Options price years value Outstanding at December 31, 2018 1,264,876 $ 22.33 3.92 $ 11,387 Granted 147,121 34.19 Exercised (705,135) 20.12 Forfeited (45,395) 31.10 Outstanding at September 30, 2019 661,467 $ 26.73 6.68 $ 4,970 Options exercisable at September 30, 2019 403,695 22.25 5.23 4,825 Options vested and expected to vest 629,815 26.37 6.56 4,956
Summary of Restricted Stock Activity	The following table summarizes restricted stock and performance stock unit activity during the nine months ended September 30, 2019: Weighted Weighted Restricted average grant- Performance average grant- stock shares date fair value stock units date fair value Unvested at December 31, 2018 146,494 $ 28.19 192,049 $ 26.40 Granted 84,520 35.04 60,781 30.85 Adjustment due to performance — — 22,246 17.36 Vested (73,879) 23.46 (95,308) 18.02 Forfeited (21,053) 32.17 (20,231) 31.50 Unvested at September 30, 2019 136,082 $ 34.40 159,537 $ 31.19

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2019
Earnings Per Share
Schedule of Computation of Basic and Diluted Income (Loss) Per Share	The following table illustrates the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2019 and 2018: For the three months ended For the nine months ended September 30, 2019 September 30, 2018 September 30, 2019 September 30, 2018 Net income $ 21,642 $ 18,240 $ 60,846 $ 44,216 Less: income allocated to participating securities (25) (18) (69) (49) Income allocated to common shareholders $ 21,617 $ 18,222 $ 60,777 $ 44,167 Weighted average shares outstanding for basic earnings per common share 31,281,970 30,869,683 31,133,982 30,700,977 Dilutive effect of equity awards 227,029 671,033 403,352 687,809 Weighted average shares outstanding for diluted earnings per common share 31,508,999 31,540,716 31,537,334 31,388,786 Basic earnings per share $ 0.69 $ 0.59 $ 1.95 $ 1.44 Diluted earnings per share $ 0.69 $ 0.58 $ 1.93 $ 1.41

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
Derivatives (Tables)	Sep. 30, 2019
Derivatives
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Asset derivatives fair value Liability derivatives fair value Balance Sheet September 30, December 31, Balance Sheet September 30, December 31, location 2019 2018 Location 2019 2018 Derivatives designated as hedging instruments: Interest rate products Other assets $ 270 $ 17,436 Other liabilities $ 23,385 $ 228 Total derivatives designated as hedging instruments $ 270 $ 17,436 $ 23,385 $ 228 Derivatives not designated as hedging instruments: Interest rate products Other assets $ 10,736 $ 3,191 Other liabilities $ 11,646 $ 3,349 Interest rate lock commitments Other assets 2,126 871 Other liabilities 250 72 Forward contracts Other assets 232 — Other liabilities 655 472 Total derivatives not designated as hedging instruments $ 13,094 $ 4,062 $ 12,551 $ 3,893
Derivative Instruments, Gain (Loss)	The tables below present the effect of the Company’s derivative financial instruments on the consolidated statements of operations for the three and nine months ended September 30, 2019 and 2018: 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 September 30, For the nine months ended September 30, hedging relationships derivatives 2019 2018 2019 2018 Interest rate products Interest and fees on loans $ 5,809 $ 4,516 $ (11,791) $ 21,856 Total $ 5,809 $ 4,516 $ (11,791) $ 21,856 Location of gain (loss) Amount of (loss) gain recognized in income on hedged items recognized in income on For the three months ended September 30, For the nine months ended September 30, Hedged items hedged items 2019 2018 2019 2018 Interest rate products Interest and fees on loans $ (3,313) $ (4,719) $ 11,604 $ (21,983) Total $ (3,313) $ (4,719) $ 11,604 $ (21,983) Location of gain (loss) Amount of (loss) gain recognized in income on derivatives Derivatives not designated recognized in income on For the three months ended September 30, For the nine months ended September 30, as hedging instruments derivatives 2019 2018 2019 2018 Interest rate products Other non-interest expense $ (198) $ 5 $ (761) $ (120) Interest rate lock commitments Mortgage banking income 522 (811) 2,290 (952) Forward contracts Mortgage banking income 348 (425) 49 988 Total $ 672 $ (1,231) $ 1,578 $ (84)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
Commitments and Contingencies (Tables)	Sep. 30, 2019
Commitments and Contingencies
Schedule of Total Unfunded Commitments	September 30, 2019 December 31, 2018 Commitments to fund loans $ 216,363 $ 183,946 Unfunded commitments under lines of credit 584,779 589,573 Commercial and standby letters of credit 11,705 10,558 Total unfunded commitments $ 812,847 $ 784,077

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 on the consolidated statements of financial condition utilizing the hierarchy structure described above: September 30, 2019 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 103,885 $ — $ 103,885 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 556,165 — 556,165 Municipal securities — 441 — 441 Loans held for sale — 204,602 — 204,602 Interest rate swap derivatives — 11,006 — 11,006 Mortgage banking derivatives — — 2,358 2,358 Total assets at fair value $ — $ 876,099 $ 2,358 $ 878,457 Liabilities: Interest rate swap derivatives $ — $ 35,031 $ — $ 35,031 Mortgage banking derivatives — — 905 905 Total liabilities at fair value $ — $ 35,031 $ 905 $ 35,936 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Investment securities available-for-sale: Mortgage-backed securities: Residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises $ — $ 146,642 $ — $ 146,642 Other residential MBS issued or guaranteed by U.S. Government agencies or sponsored enterprises — 643,381 — 643,381 Municipal securities — 441 — 441 Loans held for sale — 48,120 — 48,120 Interest rate swap derivatives — 20,627 — 20,627 Mortgage banking derivatives — — 871 871 Total assets at fair value $ — $ 859,211 $ 871 $ 860,082 Liabilities: Interest rate swap derivatives $ — $ 3,577 $ — $ 3,577 Mortgage banking derivatives — — 544 544 Total liabilities at fair value $ — $ 3,577 $ 544 $ 4,121
Table of Changes in Level 3 Financial Instruments	The table below details the changes in level 3 financial instruments during the nine months ended September 30, 2019: Mortgage banking derivatives, net Balance at December 31, 2018 $ 327 Gain included in earnings, net 2,339 Fees and costs included in earnings, net (1,213) Balance at September 30, 2019 $ 1,453
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 nine months ended September 30, 2019 and 2018: September 30, 2019 Total Losses from fair value changes Impaired loans $ 37,002 $ 7,571 Other real estate owned 7,904 872 Premises and equipment 3,385 898 Mortgage servicing rights 2,879 453 Total $ 51,170 $ 9,794 September 30, 2018 Total Losses from fair value changes Impaired loans $ 34,578 $ 1,482 Other real estate owned 35,135 220 Mortgage servicing rights 3,670 68 Total $ 73,383 $ 1,770

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
Fair Value of Financial Instruments (Tables)	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	The fair value of financial instruments at September 30, 2019 and December 31, 2018, including methods and assumptions utilized for determining fair value of financial instruments are set forth below: Level in fair value September 30, 2019 December 31, 2018 measurement Carrying Estimated Carrying Estimated hierarchy amount fair value amount fair value ASSETS Cash and cash equivalents Level 1 $ 116,919 $ 116,919 $ 109,556 $ 109,556 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 103,885 103,885 146,642 146,642 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises available-for-sale Level 2 556,165 556,165 643,381 643,381 Municipal securities Level 2 441 441 441 441 Municipal securities Level 3 169 169 169 169 Other available-for-sale securities Level 3 469 469 469 469 Mortgage-backed securities—residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 127,008 127,972 157,115 154,412 Mortgage-backed securities—other residential mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity Level 2 62,974 62,679 78,283 76,514 Non-marketable securities Level 2 27,277 27,277 27,555 27,555 Loans receivable Level 3 4,401,917 4,518,410 4,092,308 4,082,146 Loans held for sale Level 2 204,602 204,602 48,120 48,120 Accrued interest receivable Level 2 22,936 22,936 17,852 17,852 Interest rate swap derivatives Level 2 11,006 11,006 20,627 20,627 Mortgage banking derivatives Level 3 2,358 2,358 871 871 LIABILITIES Deposit transaction accounts Level 2 3,666,559 3,666,559 3,445,092 3,445,092 Time deposits Level 2 1,067,301 1,067,793 1,080,529 1,068,233 Securities sold under agreements to repurchase Level 2 62,735 62,735 66,047 66,047 Federal Home Loan Bank advances Level 2 303,897 304,184 301,660 301,933 Accrued interest payable Level 2 9,508 9,508 6,889 6,889 Interest rate swap derivatives Level 2 35,031 35,031 3,577 3,577 Mortgage banking derivatives Level 3 905 905 544 544

Acquisition Activities (Tables)

Acquisition Activities (Tables)	9 Months Ended
Acquisition Activities (Tables)	Sep. 30, 2019
Acquisition Activities
Net Assets acquired (at fair value) and consideration transferred	Assets: Cash and due from banks $ 105,173 Investment securities available-for-sale 118,512 Non-marketable securities 4,796 Loans 542,707 Loans held for sale 54,260 Other real estate owned 1,253 Premises and equipment 18,584 Core deposit intangible asset 10,477 Mortgage servicing rights 4,301 Other assets 15,361 Total assets acquired $ 875,424 Liabilities: Total deposits 729,911 FHLB borrowings 33,825 Other liabilities 20,683 Total liabilities assumed $ 784,419 Identifiable net assets acquired $ 91,005 Consideration: NBHC common stock paid at January 1, 2018, closing price of $32.43 $ 110,213 Cash 36,189 Total $ 146,402 Goodwill $ 55,397

Basis of Presentation (Details)

Basis of Presentation (Details)	9 Months Ended
Basis of Presentation (Details)	Sep. 30, 2019item
Basis of Presentation
Number of full service banking offices	105

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		$ 256	$ 26
ASU 2016-02 and ASU 2018-11
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease right-of-use assets	$ 30,500
Lease liabilities	30,500
Cumulative effect adjustment	$ 300
Retained earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of certain tax effects from accumulated other comprehensive income			1,479
Cumulative effect adjustment		$ 256	$ 26

Investment Securities - Narrati

Investment Securities - Narrative (Details) $ in Thousands	21 Months Ended
Investment Securities - Narrative (Details) $ in Thousands	Sep. 30, 2019USD ($)security	Dec. 31, 2018USD ($)security
Investment securities total	$ 900,000	$ 1,000,000
Amortized cost	659,842	809,725
Available-for-sale securities	661,129	791,102
Held-to-maturity securities	$ 189,982	$ 235,398
Number of securities \| security	68	211
Fair value of available-for-sale securities in an unrealized loss position	$ 298,369	$ 682,892
Mortgage-backed securities as percentage of available-for-sale investment portfolio	100.00%	100.00%
Other than Temporary Impairment Losses, Investments	$ 0
Fair value of available-for-sale investment securities pledged as collateral	$ 360,600	$ 318,100
Type of available-for-sale investment securities collateral	us-gaap:AssetPledgedAsCollateralMember	us-gaap:AssetPledgedAsCollateralMember
Number of held-to-maturity securities in unrealized loss positions \| security	12	49
Fair value of held-to-maturity securities in an unrealized loss position	$ 40,242	$ 229,649
Held-to-maturity investment securities pledged as collateral	$ 171,100	$ 133,100
Type of held-to-maturity investment securities collateral	us-gaap:AssetPledgedAsCollateralMember	us-gaap:AssetPledgedAsCollateralMember
Municipal securities maturing within one to five years [Member]
Amortized cost	$ 200
Available-for-sale securities	200
Municipal securities due within five to ten years [Member]
Amortized cost	400
Available-for-sale securities	400
Other Securities Investments with No Contractual Maturity [Member]
Amortized cost	500
Other Securities [Member]
Amortized cost	469	$ 469
Available-for-sale securities	$ 469	$ 469

Investment Securities - Summary

Investment Securities - Summary of Available-for-Sale Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 659,842	$ 809,725
Gross unrealized gains	6,454	2,288
Gross unrealized losses	(5,167)	(20,911)
Investment securities available-for-sale (at fair value)	661,129	791,102
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	102,354	147,283
Gross unrealized gains	1,581	1,232
Gross unrealized losses	(50)	(1,873)
Investment securities available-for-sale (at fair value)	103,885	146,642
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	556,400	661,354
Gross unrealized gains	4,873	1,056
Gross unrealized losses	(5,107)	(19,029)
Investment securities available-for-sale (at fair value)	556,165	643,381
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	619	619
Gross unrealized losses	(9)	(9)
Investment securities available-for-sale (at fair value)	610	610
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	469	469
Investment securities available-for-sale (at fair value)	$ 469	$ 469

Investment Securities - Summa_2

Investment Securities - Summary of Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 20,021	$ 159,061
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(53)	(1,551)
12 months or more, Fair Value	278,347	523,831
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5,114)	(19,360)
Total, Fair Value	298,369	682,892
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(5,167)	(20,911)
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	10,879	30,853
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(33)	(392)
12 months or more, Fair Value	4,623	69,169
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(17)	(1,481)
Total, Fair Value	15,501	100,022
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(50)	(1,873)
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	9,143	127,767
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(19)	(1,150)
12 months or more, Fair Value	273,284	454,662
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5,088)	(17,879)
Total, Fair Value	282,426	582,429
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(5,107)	(19,029)
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value		441
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(9)
12 months or more, Fair Value	441
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9)
Total, Fair Value	441	441
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (9)	$ (9)

Investment Securities - Summa_3

Investment Securities - Summary of Held-to-maturity Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	$ 189,982	$ 235,398
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,139	2
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(470)	(4,474)
Fair value	190,651	230,926
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	127,008	157,115
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	976	2
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(13)	(2,705)
Fair value	127,972	154,412
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	62,974	78,283
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	162
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(457)	(1,769)
Fair value	$ 62,679	$ 76,514

Investment Securities - Summa_4

Investment Securities - Summary of Held-to-Maturity Securities, Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Fair Value, Less than 12 months	$ 4,551	$ 61,895
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(12)	(460)
Fair Value, 12 months or more	35,691	167,754
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(458)	(4,014)
Total Fair Value	40,242	229,649
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(470)	(4,474)
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	397	26,660
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)	(381)
Fair Value, 12 months or more	4,819	126,475
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12)	(2,324)
Total Fair Value	5,216	153,135
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(13)	(2,705)
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	4,154	35,235
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11)	(79)
Fair Value, 12 months or more	30,872	41,279
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(446)	(1,690)
Total Fair Value	35,026	76,514
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (457)	$ (1,769)

Loans - Narrative Section (Deta

Loans - Narrative Section (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Debt Instrument [Line Items]
Fees and cost related to loans	$ 8,500	$ 10,200
Carrying amount of loan investments	4,401,917	4,092,308	$ 3,905,311
Loans Pledged as Collateral	1,500,000	1,600,000
Non Accrual [Member]
Debt Instrument [Line Items]
Recorded investment, non-accrual status	25,400
Increase (decrease) in non-accrual loans	$ 900
Percentage increase (decrease) in past due loans	3.90%
ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 57,199		$ 74,921
Total Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	4,401,917	4,092,308
Total Loans [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,948,467	2,644,571
Total Loans [Member] \| Originated and acquired loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	4,344,718	4,021,429
Recorded investment, non-accrual status	25,398	24,456
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,204,689	1,931,147
Recorded investment, non-accrual status	9,880	5,510
Total Loans [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	46,302	49,204
Recorded investment, non-accrual status	915	742
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,932,205	2,624,173
Recorded investment, non-accrual status	15,154	13,951
Total Loans [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	446,629	421,666
Recorded investment, non-accrual status	4,001	6,931
Total Loans [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	435,209	380,630
Recorded investment, non-accrual status	379	572
Total Loans [Member] \| ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	57,199	70,879
Total Loans [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	16,262	20,398
Total Loans [Member] \| Substandard [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	42,578	53,527
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	38,614	48,724
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	14,893	22,919
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	915	742
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	26,257	36,336
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	9,345	11,828
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	950	1,611
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	3,964	4,803
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	2,045	2,282
Total Loans [Member] \| Special Mention [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	79,678	63,975
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	78,593	62,284
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	22,809	16,531
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	64,303	34,140
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	25,351	16,349
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	13,782	23,243
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,085	1,691
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	495	537
Total Loans [Member] \| Doubtful [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,704	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,704	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,474	987
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	1,589	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	82	$ 85
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 115

Loans - Impaired Loans Narrativ

Loans - Impaired Loans Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Debt Instrument [Line Items]
Carrying amount of loan investments	$ 4,401,917	$ 4,092,308	$ 3,905,311
Recorded investment of impaired loans	37,002	31,079
Collective related allowance for loan losses for impaired loans	$ 1,756	$ 1,169

Loans - Loan Delinquency (Detai

Loans - Loan Delinquency (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Loans [Line Items]
Total loans	$ 4,401,917	$ 4,092,308	$ 3,905,311
% of Total	100.00%	100.00%
Total Commercial Real Estate [Member]
Loans [Line Items]
% of Total		14.50%
Commercial Loan [Member]
Loans [Line Items]
% of Total	67.00%	64.60%
Commercial Real Estate [Member]
Loans [Line Items]
% of Total	14.60%
Residential Real Estate Segment [Member]
Loans [Line Items]
% of Total	17.90%	20.30%
Consumer [Member]
Loans [Line Items]
% of Total	0.50%	0.60%
ASC 310-30 [Member]
Loans [Line Items]
Total loans	$ 57,199		$ 74,921
Total Loans [Member]
Loans [Line Items]
Total loans	4,401,917	$ 4,092,308
Total Loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total loans		592,212
Total Loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total loans	2,948,467	2,644,571
Total Loans [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total loans	641,180
Total Loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	790,077	830,815
Total Loans [Member] \| Consumer [Member]
Loans [Line Items]
Total loans	22,193	24,710
Total Loans [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Non- accrual	25,398	24,456
Total past due and non-accrual	34,089	29,961
Current	4,310,629	3,991,468
Total loans	4,344,718	4,021,429
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Construction [Member]
Loans [Line Items]
Non- accrual	385	1,208
Total past due and non-accrual	385	1,208
Current	85,658	93,646
Total loans	86,043	94,854
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Acquisition/Development [Member]
Loans [Line Items]
Non- accrual	731	121
Total past due and non-accrual	883	121
Current	15,632	19,529
Total loans	16,515	19,650
Total Loans [Member] \| Originated and acquired loans [Member] \| Multifamily [Member]
Loans [Line Items]
Current	68,953	56,685
Total loans	68,953	56,685
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Non- accrual	9,880	5,510
Total past due and non-accrual	16,690	6,079
Current	2,187,999	1,925,068
Total loans	2,204,689	1,931,147
Total Loans [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Non- accrual	4,001	6,931
Total past due and non-accrual	4,001	7,824
Current	442,628	413,842
Total loans	446,629	421,666
Total Loans [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Non- accrual	379	572
Total past due and non-accrual	479	1,032
Current	434,730	379,598
Total loans	435,209	380,630
Total Loans [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Non- accrual	1,495	1,901
Total past due and non-accrual	1,747	2,361
Current	604,973	549,458
Total loans	606,720	551,819
Total Loans [Member] \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Non- accrual	7,828	7,790
Total past due and non-accrual	8,882	10,444
Current	678,509	712,592
Total loans	687,391	723,036
Total Loans [Member] \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Non- accrual	867	772
Total past due and non-accrual	1,216	1,328
Current	94,993	96,456
Total loans	96,209	97,784
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Non- accrual	15,154	13,951
Total past due and non-accrual	22,075	15,679
Current	2,910,130	2,608,494
Total loans	2,932,205	2,624,173
Total Loans [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Non- accrual	358	768
Total past due and non-accrual	469	1,034
Current	234,116	221,122
Total loans	234,585	222,156
Total Loans [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Loans [Line Items]
Non- accrual	915	742
Total past due and non-accrual	915	742
Current	45,387	48,462
Total loans	46,302	49,204
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total loans	606,720
Total Loans [Member] \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Non- accrual	8,695	8,562
Total past due and non-accrual	10,098	11,772
Current	773,502	809,048
Total loans	783,600	820,820
Total Loans [Member] \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Non- accrual	54	42
Total past due and non-accrual	169	149
Current	22,024	24,468
Total loans	22,193	24,617
Total Loans [Member] \| ASC 310-30 [Member]
Loans [Line Items]
Total loans	57,199	70,879
Total Loans [Member] \| ASC 310-30 [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total loans		40,393
Total Loans [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total loans	16,262	20,398
Total Loans [Member] \| ASC 310-30 [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total loans	34,460	40,393
Total Loans [Member] \| ASC 310-30 [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total loans	6,477	9,995
Total Loans [Member] \| ASC 310-30 [Member] \| Consumer [Member]
Loans [Line Items]
Total loans		93
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member]
Loans [Line Items]
Past due loans	6,723	4,610
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Commercial Acquisition/Development [Member]
Loans [Line Items]
Past due loans	152
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Past due loans	4,842	495
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Past due loans		893
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Past due loans	100	328
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Past due loans	252	328
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Past due loans	1,054	2,106
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Past due loans	349	556
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Past due loans	4,953	1,529
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Past due loans	111	141
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Past due loans	1,403	2,662
Total Loans [Member] \| 30-89 Days Past Due \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Past due loans	115	91
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member]
Loans [Line Items]
Past due loans	1,968	895
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Past due loans	1,968	74
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Past due loans		132
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Past due loans		132
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Past due loans		548
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Past due loans	1,968	199
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Past due loans		125
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Past due loans		548
Total Loans [Member] \| Greater than 90 Days Past Due \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Past due loans		$ 16
Non Accrual [Member]
Loans [Line Items]
Non- accrual	$ 25,400

Loans - Credit Exposure for Loa

Loans - Credit Exposure for Loans as Determined by Company's Internal Risk Rating System (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Loans [Line Items]
Total Loans	$ 4,401,917	$ 4,092,308	$ 3,905,311
ASC 310-30 [Member]
Loans [Line Items]
Total Loans	57,199		$ 74,921
Total Loans [Member]
Loans [Line Items]
Total Loans	4,401,917	4,092,308
Total Loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	2,948,467	2,644,571
Total Loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans		592,212
Total Loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	790,077	830,815
Total Loans [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans	22,193	24,710
Total Loans [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	641,180
Total Loans [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Total Loans	4,344,718	4,021,429
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	2,204,689	1,931,147
Total Loans [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Total Loans	234,585	222,156
Total Loans [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Loans [Line Items]
Total Loans	46,302	49,204
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	2,932,205	2,624,173
Total Loans [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	606,720	551,819
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Construction [Member]
Loans [Line Items]
Total Loans	86,043	94,854
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	16,515	19,650
Total Loans [Member] \| Originated and acquired loans [Member] \| Multifamily [Member]
Loans [Line Items]
Total Loans	68,953	56,685
Total Loans [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Total Loans	446,629	421,666
Total Loans [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	435,209	380,630
Total Loans [Member] \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	783,600	820,820
Total Loans [Member] \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Total Loans	687,391	723,036
Total Loans [Member] \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Total Loans	96,209	97,784
Total Loans [Member] \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans	22,193	24,617
Total Loans [Member] \| Originated and acquired loans [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	606,720
Total Loans [Member] \| ASC 310-30 [Member]
Loans [Line Items]
Total Loans	57,199	70,879
Total Loans [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	16,262	20,398
Total Loans [Member] \| ASC 310-30 [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans		40,393
Total Loans [Member] \| ASC 310-30 [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	6,477	9,995
Total Loans [Member] \| ASC 310-30 [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans		93
Total Loans [Member] \| ASC 310-30 [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	34,460	40,393
Total Loans [Member] \| Pass [Member]
Loans [Line Items]
Total Loans	4,277,957	3,973,689
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Total Loans	4,225,807	3,909,304
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	2,165,513	1,890,710
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Total Loans	217,305	220,004
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Loans [Line Items]
Total Loans	45,387	48,462
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	2,840,056	2,552,580
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	590,223	524,721
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Commercial Construction [Member]
Loans [Line Items]
Total Loans	85,658	92,731
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	15,744	19,529
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Multifamily [Member]
Loans [Line Items]
Total Loans	68,459	56,685
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Total Loans	411,851	393,404
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	420,362	355,776
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	773,389	807,428
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Total Loans	678,576	710,972
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Total Loans	94,813	96,456
Total Loans [Member] \| Pass [Member] \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans	22,139	24,575
Total Loans [Member] \| Pass [Member] \| ASC 310-30 [Member]
Loans [Line Items]
Total Loans	52,150	64,385
Total Loans [Member] \| Pass [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	13,722	17,579
Total Loans [Member] \| Pass [Member] \| ASC 310-30 [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	4,851	7,484
Total Loans [Member] \| Pass [Member] \| ASC 310-30 [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	33,577	39,322
Total Loans [Member] \| Special Mention [Member]
Loans [Line Items]
Total Loans	79,678	63,975
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Total Loans	78,593	62,284
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	22,809	16,531
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Total Loans	16,143	1,260
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	64,303	34,140
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	13,782	24,158
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Commercial Construction [Member]
Loans [Line Items]
Total Loans		915
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Total Loans	25,351	16,349
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	13,782	23,243
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	508	3,986
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Total Loans	82	3,571
Total Loans [Member] \| Special Mention [Member] \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Total Loans	426	415
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member]
Loans [Line Items]
Total Loans	1,085	1,691
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	495	537
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	368	908
Total Loans [Member] \| Special Mention [Member] \| ASC 310-30 [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	222	246
Total Loans [Member] \| Substandard [Member]
Loans [Line Items]
Total Loans	42,578	53,527
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Total Loans	38,614	48,724
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	14,893	22,919
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Total Loans	1,104	847
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Energy Loans [Member]
Loans [Line Items]
Total Loans	915	742
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	26,257	36,336
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	2,600	2,940
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial Construction [Member]
Loans [Line Items]
Total Loans	385	1,208
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Commercial Acquisition/Development [Member]
Loans [Line Items]
Total Loans	771	121
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Multifamily [Member]
Loans [Line Items]
Total Loans	494
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Total Loans	9,345	11,828
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	950	1,611
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	9,703	9,406
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Senior lien
Loans [Line Items]
Total Loans	8,733	8,493
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Junior lien
Loans [Line Items]
Total Loans	970	913
Total Loans [Member] \| Substandard [Member] \| Originated and acquired loans [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans	54	42
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member]
Loans [Line Items]
Total Loans	3,964	4,803
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	2,045	2,282
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Total Loans	1,258	1,603
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member] \| Consumer [Member]
Loans [Line Items]
Total Loans		93
Total Loans [Member] \| Substandard [Member] \| ASC 310-30 [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	661	825
Total Loans [Member] \| Doubtful [Member]
Loans [Line Items]
Total Loans	1,704	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member]
Loans [Line Items]
Total Loans	1,704	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Commercial and Industrial [Member]
Loans [Line Items]
Total Loans	1,474	987
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Food and Agriculture [Member]
Loans [Line Items]
Total Loans	33	45
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Commercial Loan [Member]
Loans [Line Items]
Total Loans	1,589	1,117
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Total Commercial Real Estate [Member]
Loans [Line Items]
Total Loans	115
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Owner-Occupied [Member]
Loans [Line Items]
Total Loans	82	$ 85
Total Loans [Member] \| Doubtful [Member] \| Originated and acquired loans [Member] \| Non Owner-Occupied [Member]
Loans [Line Items]
Total Loans	$ 115

Loans - Additional Information

Loans - Additional Information Regarding Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans [Line Items]
Unpaid principal balance, Total	$ 53,608	$ 42,726
Recorded investment of impaired loans	37,002	31,079
Loans and Leases Receivable, Allowance	1,756	1,169
Commercial and Industrial [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	17,772	4,374
Recorded investment with no related allowance recorded	10,982	3,029
Unpaid principal balance of impaired loans with an allowance recorded	8,679	7,252
Recorded investment of impaired loans with an allowance recorded	5,959	4,627
Allowance for loan losses allocated with an allowance recorded	1,486	996
Food and Agriculture [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	1,468	1,468
Recorded investment with no related allowance recorded	1,220	1,260
Unpaid principal balance of impaired loans with an allowance recorded	798	883
Recorded investment of impaired loans with an allowance recorded	792	845
Allowance for loan losses allocated with an allowance recorded	36	46
Energy Loans [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	5,539	5,366
Recorded investment with no related allowance recorded	915	742
Commercial Loan [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	28,908	18,338
Recorded investment with no related allowance recorded	16,833	11,640
Unpaid principal balance of impaired loans with an allowance recorded	10,740	9,497
Recorded investment of impaired loans with an allowance recorded	7,796	6,641
Allowance for loan losses allocated with an allowance recorded	1,608	1,132
Commercial Construction [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	389	1,435
Recorded investment with no related allowance recorded	385	1,208
Commercial Acquisition/Development [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	763	378
Recorded investment with no related allowance recorded	731	121
Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	4,129	7,130
Recorded investment with no related allowance recorded	3,716	6,609
Unpaid principal balance of impaired loans with an allowance recorded	1,263	1,362
Recorded investment of impaired loans with an allowance recorded	1,045	1,169
Allowance for loan losses allocated with an allowance recorded	86	90
Non Owner-Occupied [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	90	641
Recorded investment with no related allowance recorded	26	547
Unpaid principal balance of impaired loans with an allowance recorded	590	313
Recorded investment of impaired loans with an allowance recorded	525	254
Allowance for loan losses allocated with an allowance recorded	117	2
Total Commercial Real Estate [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	1,242	2,454
Recorded investment with no related allowance recorded	1,142	1,876
Unpaid principal balance of impaired loans with an allowance recorded	590	313
Recorded investment of impaired loans with an allowance recorded	525	254
Allowance for loan losses allocated with an allowance recorded	117	2
Senior lien
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	4,660	4,229
Recorded investment with no related allowance recorded	4,339	3,814
Unpaid principal balance of impaired loans with an allowance recorded	5,900	6,032
Recorded investment of impaired loans with an allowance recorded	4,974	5,178
Allowance for loan losses allocated with an allowance recorded	24	27
Junior lien
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	355	409
Recorded investment with no related allowance recorded	320	341
Unpaid principal balance of impaired loans with an allowance recorded	1,153	1,408
Recorded investment of impaired loans with an allowance recorded	1,019	1,293
Allowance for loan losses allocated with an allowance recorded	7	8
Residential Real Estate Segment [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	5,015	4,638
Recorded investment with no related allowance recorded	4,659	4,155
Unpaid principal balance of impaired loans with an allowance recorded	7,053	7,440
Recorded investment of impaired loans with an allowance recorded	5,993	6,471
Allowance for loan losses allocated with an allowance recorded	31	35
Consumer [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	60	46
Recorded investment with no related allowance recorded	54	42
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Unpaid principal balance with no related allowance recorded	35,225	25,476
Recorded investment with no related allowance recorded	22,688	17,713
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Unpaid principal balance of impaired loans with an allowance recorded	18,383	17,250
Recorded investment of impaired loans with an allowance recorded	14,314	13,366
Allowance for loan losses allocated with an allowance recorded	$ 1,756	$ 1,169

Loans - Impaired Loans - Averag

Loans - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Loans [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 37,382	$ 34,705	$ 29,794	$ 36,229
Impaired Financing Receivable, Interest Income, Cash Basis Method	83	145	253	461
Commercial and Industrial [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	11,808	4,518	6,569	5,206
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	41	68	129	241
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,908	5,015	5,286	5,175
Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,656	7,278	3,345	7,415
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	7	17	20	52
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,060	1,205	1,093	1,234
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	6	5	18	14
Food and Agriculture [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,220	1,259	1,348	1,259
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method				6
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	799	853	630	866
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	3	1	7	4
Energy Loans [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	909	2,044	839	2,080
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		15		52
Commercial Loan [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,593	15,099	12,101	15,960
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	48	100	149	351
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	7,767	7,073	7,010	7,275
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	9	6	25	18
Commercial Construction [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	257	1,081	86	1,081
Commercial Acquisition/Development [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	491	590	170	768
Non Owner-Occupied [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	27	559	29	580
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	528	277	511	297
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	4	11	14
Total Commercial Real Estate [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	775	2,230	285	2,429
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	528	277	511	297
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	4	11	14
Senior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,313	3,062	3,677	3,118
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1		1
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,004	5,351	4,813	5,503
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	15	17	43	43
Junior lien
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	323	316	334	323
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1	1	2	1
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,029	1,250	1,009	1,273
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	7	16	22	35
Residential Real Estate Segment [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	4,636	3,378	4,010	3,441
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	2	1	3	1
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,033	6,601	5,822	6,776
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	22	33	65	78
Consumer [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	10	12	11	13
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	40	35	43	38
Impaired Loans With No Related Allowance Recorded [Member] [Member]
Loans [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	23,014	20,719	16,408	21,843
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	50	101	152	352
Impaired Loans With Related Allowance Recorded [Member]
Loans [Line Items]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,368	13,986	13,386	14,386
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	$ 33	$ 44	$ 101	$ 109

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring and Loans Accounted for Under ASC Topic 310-30 Narratives (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)loanitem	Sep. 30, 2018USD ($)loan	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Troubled Debt Restructuring Nonaccrual Loans	$ 6.1		$ 2.7
Number of restructured loans \| item	15
Troubled Debt Restructurings [Member]
Debt Instrument [Line Items]
TDR's modified within the past year that defaulted on their restructured terms \| loan	0	3
Recorded investment	$ 8.2
Agriculture and Consumer loans [Member]
Debt Instrument [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0.4

Loans - Additional Informatio_2

Loans - Additional Information Related to Accruing TDR's (Details) - Accruing TDR [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Loans [Line Items]
Recorded investment	$ 7,384	$ 4,073
Average year-to- date recorded investment	3,043	4,250
Unpaid principal balance	7,589	4,556
Unfunded commitments to fund TDRs	163	12
Commercial [Member]
Loans [Line Items]
Recorded investment	6,085	2,730
Average year-to- date recorded investment	1,738	2,827
Unpaid principal balance	6,207	3,155
Unfunded commitments to fund TDRs	151
Commercial Real Estate [Member]
Loans [Line Items]
Recorded investment	159	229
Average year-to- date recorded investment	181	260
Unpaid principal balance	210	280
Residential Real Estate Segment [Member]
Loans [Line Items]
Recorded investment	1,140	1,114
Average year-to- date recorded investment	1,124	1,163
Unpaid principal balance	1,172	1,121
Unfunded commitments to fund TDRs	$ 12	$ 12

Loans - Summary of Company's Ca

Loans - Summary of Company's Carrying Value of Non-Accrual TDR's (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 6,100	$ 2,700
Non-Accruing TDR [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	6,131	3,438
Non-Accruing TDR [Member] \| Commercial [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	2,392	1,854
Non-Accruing TDR [Member] \| Commercial Real Estate [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	1,109
Non-Accruing TDR [Member] \| Residential Real Estate Segment [Member]
Loans [Line Items]
Carrying Value of Non - Accruing TDR's	$ 2,630	$ 1,584

Loans - Re-Measurement of Loans

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	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield beginning balance	$ 35,901	$ 46,568
Reclassification from non-accretable difference	6,195	10,070
Reclassification to non-accretable difference	(921)	(1,929)
Accretion	(10,232)	(15,009)
Accretable yield ending balance	$ 30,943	$ 39,700

Loans - Composition of Net Book

Loans - Composition of Net Book Value for Loans Accounted for under ASC Topic 310-30 (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Contractual cash flows	$ 397,081	$ 420,994
Non-accretable difference	(308,939)	(314,214)
Accretable yield	(30,943)	(35,901)
Loans accounted for under ASC 310-30	$ 57,199	$ 70,879

Allowance for Loan Losses - Sum

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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 40,082	$ 32,230	$ 35,692	$ 31,264
Provision (recoupment) for loan losses	5,700		10,463	2,721
Ending balance	38,710	33,813	38,710	33,813
Carrying amount of loan investments					$ 4,401,917	$ 4,092,308	$ 3,905,311
Loans	38,710	32,230	38,710	33,813	38,710	35,692	33,813
Total Loans					4,401,917	4,092,308	3,905,311
Originated and acquired loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	39,891	32,029	35,461	31,193
Charge-offs	(7,101)	(394)	(7,662)	(1,445)
Recoveries	39	1,170	217	1,334
Provision (recoupment) for loan losses	5,701	801	10,514	2,524
Ending balance	38,530	33,606	38,530	33,606
Loans	39,891	32,029	38,530	33,606	38,530	35,461	33,606
Originated and acquired loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					1,756		1,484
Ending allowance balance collectively evaluated for impairment					36,774		32,122
Loans individually evaluated for impairment					37,003		34,578
Loans collectively evaluated for impairment					4,307,715		3,795,812
ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	191	201	231	71
Charge-offs				(61)
Provision (recoupment) for loan losses	(11)	6	(51)	197
Ending balance	180	207	180	207
Loans individually evaluated for impairment					180
Carrying amount of loan investments					57,199		74,921
Loans	191	201	180	207	180	231	207
Total Loans					57,199		74,921
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	30,823	23,582	27,137	21,385
Ending balance	29,795	25,294	29,795	25,294
Carrying amount of loan investments					2,948,467		2,442,091
Loans	30,823	23,582	29,795	25,294	29,795	27,137	25,294
Total Loans					2,948,467		2,442,091
Commercial Portfolio Segment [Member] \| Originated and acquired loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	30,642	23,400	26,946	21,340
Charge-offs	(6,760)		(6,841)	(437)
Recoveries	2	1,097	31	1,152
Provision (recoupment) for loan losses	5,731	606	9,479	3,048
Ending balance	29,615	25,103	29,615	25,103
Loans	30,642	23,400	29,615	25,103	29,615	26,946	25,103
Commercial Portfolio Segment [Member] \| Originated and acquired loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					1,608		1,446
Ending allowance balance collectively evaluated for impairment					28,007		23,657
Loans individually evaluated for impairment					24,630		22,585
Loans collectively evaluated for impairment					2,907,575		2,397,248
Commercial Portfolio Segment [Member] \| ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	181	182	191	45
Charge-offs				(61)
Provision (recoupment) for loan losses	(1)	9	(11)	207
Ending balance	180	191	180	191
Loans individually evaluated for impairment					180
Carrying amount of loan investments					16,262		22,258
Loans	181	182	180	191	180	191	191
Total Loans					16,262		22,258
Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,851	3,781	3,800	3,965
Ending balance	3,563	3,721	3,563	3,721
Carrying amount of loan investments					790,077		825,227
Loans	3,851	3,781	3,563	3,721	3,563	3,800	3,721
Total Loans					790,077		825,227
Residential Portfolio Segment [Member] \| Originated and acquired loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,841	3,781	3,760	3,965
Charge-offs	(77)	(13)	(124)	(103)
Recoveries	3	2	32	8
Provision (recoupment) for loan losses	(204)	(49)	(105)	(149)
Ending balance	3,563	3,721	3,563	3,721
Loans	3,841	3,781	3,563	3,721	3,563	3,760	3,721
Residential Portfolio Segment [Member] \| Originated and acquired loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					31		36
Ending allowance balance collectively evaluated for impairment					3,532		3,685
Loans individually evaluated for impairment					10,652		4,319
Loans collectively evaluated for impairment					772,948		810,187
Residential Portfolio Segment [Member] \| ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10		40
Provision (recoupment) for loan losses	(10)		(40)
Carrying amount of loan investments					6,477		10,721
Loans	10		40			40
Total Loans					6,477		10,721
Consumer Loan [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	341	306	349	305
Ending balance	297	318	297	318
Carrying amount of loan investments					22,193		26,750
Loans	341	306	297	318	297	349	318
Total Loans					22,193		26,750
Consumer Loan [Member] \| Originated and acquired loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	341	306	349	305
Charge-offs	(263)	(381)	(696)	(894)
Recoveries	34	71	143	174
Provision (recoupment) for loan losses	185	322	501	733
Ending balance	297	318	297	318
Loans	341	306	297	318	297	349	318
Consumer Loan [Member] \| Originated and acquired loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance collectively evaluated for impairment					297		318
Loans individually evaluated for impairment					54		5,640
Loans collectively evaluated for impairment					22,139		21,010
Consumer Loan [Member] \| ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Carrying amount of loan investments							100
Total Loans							100
Commercial Real Estate Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,067	4,561	4,406	5,609
Ending balance	5,055	4,480	5,055	4,480
Carrying amount of loan investments					641,180		611,243
Loans	5,067	4,561	5,055	4,480	5,055	4,406	4,480
Total Loans					641,180		611,243
Commercial Real Estate Portfolio Segment [Member] \| Originated and acquired loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,067	4,542	4,406	5,583
Charge-offs	(1)		(1)	(11)
Recoveries			11
Provision (recoupment) for loan losses	(11)	(78)	639	(1,108)
Ending balance	5,055	4,464	5,055	4,464
Loans	$ 5,067	4,542	$ 5,055	4,464	5,055	$ 4,406	4,464
Commercial Real Estate Portfolio Segment [Member] \| Originated and acquired loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Ending allowance balance individually evaluated for impairment					117		2
Ending allowance balance collectively evaluated for impairment					4,938		4,462
Loans individually evaluated for impairment					1,667		2,034
Loans collectively evaluated for impairment					605,053		567,367
Commercial Real Estate Portfolio Segment [Member] \| ASC 310-30 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		19		26
Provision (recoupment) for loan losses		(3)		(10)
Ending balance		16		16
Carrying amount of loan investments					34,460		41,842
Loans		$ 19		$ 16			16
Total Loans					$ 34,460		$ 41,842

Allowance for Loan Losses - Nar

Allowance for Loan Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance For Loan And Lease Losses [Line Items]
IdentifiedAcquiredCommercialLoanChargeOff			$ 6,600
Provision (recoupment) for loan losses	$ 5,700		10,463	$ 2,721
IdentifiedAcquiredCommercialLoanInProvision	4,200		6,600
Originated and acquired loans [Member]
Allowance For Loan And Lease Losses [Line Items]
Charge-offs, net	7,100		7,400
Provision (recoupment) for loan losses	5,701	$ 801	10,514	2,524
ASC 310-30 [Member]
Allowance For Loan And Lease Losses [Line Items]
Provision (recoupment) for loan losses	$ (11)	$ 6	$ (51)	$ 197

Leases - ASC Topic 842 - (Detai

Leases - ASC Topic 842 - (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Leases
Lease right-of-use		$ 30,700	$ 30,700
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		Other Assets [Member]	Other Assets [Member]
Lease liabilities		$ 30,898	$ 30,898
Operating Lease, Liability, Statement of Financial Position [Extensible List]		Other Liabilities [Member]	Other Liabilities [Member]
Cumulative effect of adjustment to retained earnings			$ 256	$ 26
Weighted-average remaining lease term (in years)		5 years 3 months 18 days	5 years 3 months 18 days
Weighted-average discount rate (in percent)		3.34%	3.34%
Rent expense		$ 1,500	$ 4,300
Remaining undiscounted cash flows
For the six months ending December 31, 2019		1,411	1,411
For the year ending December 31, 2020		5,435	5,435
For the year ending December 31, 2021		5,148	5,148
For the year ending December 31, 2022		4,643	4,643
For the year ending December 31, 2023		4,330	4,330
Thereafter		19,323	19,323
Total lease payments		40,290	40,290
Less: Imputed interest		9,392	9,392
Present value of operating lease liabilities		$ 30,898	$ 30,898
Maximum
Leases
Term of lease (in years)		10 years	10 years
Minimum
Leases
Term of lease (in years)		1 year	1 year
2016-02
Leases
Lease right-of-use	$ 30,500
Lease liabilities	30,500
Cumulative effect of adjustment to retained earnings	300
Remaining undiscounted cash flows
Present value of operating lease liabilities	$ 30,500

Leases - ASC Topic 840 - (Detai

Leases - ASC Topic 840 - (Details) $ in Thousands	Dec. 31, 2018USD ($)
Future minimum lease payments
2019	$ 3,092
2020	2,981
2021	3,091
2022	3,052
2023	2,047
Thereafter	10,163
Total	$ 24,426

Other Real Estate Owned - Summa

Other Real Estate Owned - Summary of Activity in OREO Balances (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Other Real Estate [Roll Forward]
Beginning balance	$ 7,904	$ 35,135
Acquired through acquisition		1,253
Transfers from loan portfolio, at fair value	2,488	24,919
Impairments	(872)	(220)
Sales	(4,308)	(1,308)
Ending balance	$ 10,596	$ 10,491

Other Real Estate Owned - Narra

Other Real Estate Owned - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Other Real Estate Owned
Other real estate owned	$ 7,904	$ 35,135	$ 7,904	$ 35,135	$ 10,596	$ 10,491
Decrease in OREO					$ 2,700
OREO sales			4,308	1,308
OREO Sold NBV	4,300	1,300	4,300	1,300
Gain (loss) on OREO sales, net	$ 6,514	$ 450	$ 7,200	$ 386

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)item	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)item	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Jan. 01, 2018USD ($)
Goodwill and Intangible Assets
Goodwill acquired	$ 115,027		$ 115,027		$ 115,027
Goodwill Impairment	0		0		0
Amortization of acquired identifiable intangibles	295	$ 511	887	$ 1,817
Mortgage loans serviced			334,500	404,500
Mortgage service fees	200	200	700	900
Peoples Inc [Member]
Goodwill and Intangible Assets
Goodwill acquired						$ 55,397
Core Deposits
Goodwill and Intangible Assets
Intangible assets acquired	48,800		48,800
Amortization of acquired identifiable intangibles	300	500	900	1,800
Accumulated amortization	39,807		$ 39,807		$ 38,920
Core Deposits \| Minimum
Goodwill and Intangible Assets
Amortization period			7 years
Core Deposits \| Maximum
Goodwill and Intangible Assets
Amortization period			10 years
Core Deposits \| Peoples Inc [Member]
Goodwill and Intangible Assets
Intangible assets acquired						10,477
Mortgage servicing rights
Goodwill and Intangible Assets
Amortization of acquired identifiable intangibles	$ 200	$ 200	$ 578	$ 588
Mortgage servicing rights \| Measurement Input, Discount Rate [Member] \| Minimum
Goodwill and Intangible Assets
Servicing assets measurement input (as a percent) \| item	0.095		0.095
Mortgage servicing rights \| Measurement Input, Discount Rate [Member] \| Maximum
Goodwill and Intangible Assets
Servicing assets measurement input (as a percent) \| item	0.105		0.105
Mortgage servicing rights \| Measurement Input, Constant Prepayment Rate [Member] \| Minimum
Goodwill and Intangible Assets
Servicing assets measurement input (as a percent) \| item	0.179		0.179
Mortgage servicing rights \| Measurement Input, Constant Prepayment Rate [Member] \| Maximum
Goodwill and Intangible Assets
Servicing assets measurement input (as a percent) \| item	0.267		0.267
Mortgage servicing rights \| Peoples Inc [Member]
Goodwill and Intangible Assets
Intangible assets acquired						$ 4,301

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Carrying Amounts (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Core Deposits
Carrying amount of intangible assets
Gross carrying amount	$ 48,834	$ 48,834
Accumulated amortization	39,807	38,920
Net carrying amount	9,027	9,914
Mortgage servicing rights
Carrying amount of intangible assets
Net carrying amount	$ 2,551	$ 3,556	$ 3,670

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Changes in Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Changes in the mortgage servicing rights
Amortization	$ (295)	$ (511)	$ (887)	$ (1,817)
Mortgage servicing rights
Changes in the mortgage servicing rights
Beginning balance			3,556
Acquired through acquisition				4,301
Originations			26	25
Impairment			(453)	(68)
Amortization	(200)	(200)	(578)	(588)
Ending balance	2,551	3,670	2,551	3,670
Fair value of mortgage servicing rights	$ 2,551	$ 4,351	$ 2,551	$ 4,351

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Summary of Estimated Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2019USD ($)
Core Deposits
Estimated future amortization expense
For the six months ending December 31, 2019	$ 296
For the year ending December 31, 2020	1,183
For the year ending December 31, 2021	1,183
For the year ending December 31, 2022	1,127
For the year ending December 31, 2023	1,048
Mortgage servicing rights
Estimated future amortization expense
For the six months ending December 31, 2019	141
For the year ending December 31, 2020	534
For the year ending December 31, 2021	416
For the year ending December 31, 2022	324
For the year ending December 31, 2023	$ 252

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Borrowings - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 8.6		$ 8.6		$ 5.9
Amount of repurchase agreements	62.7		62.7		66
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	1,000		1,000
Loans pledged	1,500		1,500		1,600
Interest expense related to FHLB advances	1.4	$ 0.6	4.8	$ 1.7
Line of credit
Assets Sold under Agreements to Repurchase [Line Items]
FHLB advances	$ 278.9		$ 278.9		234.3
Term financing
Assets Sold under Agreements to Repurchase [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Last	2020		2020
FHLB advances	$ 15		$ 15		$ 67.3
Interest rate range of FHLB advances	2.33%		2.33%
Term financing \| Minimum
Assets Sold under Agreements to Repurchase [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Last					2019
Interest rate range of FHLB advances					1.55%
Term financing \| Maximum
Assets Sold under Agreements to Repurchase [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Due Date, Last					2020
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	$ 17.2		$ 17.2		$ 16
U.S. Treasury Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Fair value of collateral	$ 73.2		$ 73.2		$ 73.9

Regulatory Capital - Capital Ra

Regulatory Capital - Capital Ratio Requirements under Prompt Corrective Action or Other Regulatory Requirements (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage Ratio	10.90%	10.50%
Common equity risk-based ratio	12.90%	12.90%
Risk-based capital Ratio	12.90%	12.90%
Total risk-based capital Ratio	13.80%	13.80%
Leverage Amount	$ 625,512	$ 580,504
Common equity risk-based amount	625,512	580,504
Risk-based capital amount	625,512	580,504
Total risk-based capital Amount	$ 667,132	$ 620,275
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	7.00%	7.00%
Required to be considered adequately capitalized Ratio, risk-based capital ratio	8.50%	8.50%
Required to be considered adequately capitalized Ratio, Total risk-based capital ratio	10.50%	10.50%
Required to be considered adequately capitalized leverage Amount	$ 229,652	$ 220,988
Required to be considered adequately capitalized common equity capital amount	401,891	386,728
Required to be considered adequately capitalized risk-based capital Amount	411,179	382,306
Required to be considered adequately capitalized Total risk-based capital Amount	$ 507,926	$ 472,261
NBH Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage Ratio	8.80%	9.00%
Common equity risk-based ratio	10.50%	11.10%
Risk-based capital Ratio	10.50%	11.10%
Total risk-based capital Ratio	11.40%	12.00%
Leverage Amount	$ 506,485	$ 498,283
Common equity risk-based amount	506,485	498,283
Risk-based capital amount	506,485	498,283
Total risk-based capital Amount	$ 548,105	$ 538,054
Required to be considered well capitalized Ratio, leverage ratio	5.00%	5.00%
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	$ 286,546	$ 275,703
Required to be considered well capitalized common equity capital amount	372,510	358,414
Required to be considered well capitalized risk-based capital Amount	386,379	358,938
Required to be considered well capitalized Total risk-based capital Amount	$ 482,973	$ 448,672
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	7.00%	7.00%
Required to be considered adequately capitalized Ratio, risk-based capital ratio	8.50%	8.50%
Required to be considered adequately capitalized Ratio, Total risk-based capital ratio	10.50%	10.50%
Required to be considered adequately capitalized leverage Amount	$ 229,237	$ 220,563
Required to be considered adequately capitalized common equity capital amount	401,164	385,984
Required to be considered adequately capitalized risk-based capital Amount	410,527	381,372
Required to be considered adequately capitalized Total risk-based capital Amount	$ 507,122	$ 471,106

Revenue from Contracts with C_3

Revenue from Contracts with Clients - Non-interest income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Revenue from Contracts with Clients
(Gain) loss on OREO sales, net	$ (6,514)	$ (450)	$ (7,200)	$ (386)
Service Charges and other fees
Revenue from Contracts with Clients
Non-interest income	4,617	4,592	13,479	13,473
Bank card fees
Revenue from Contracts with Clients
Non-interest income	3,752	3,686	10,946	10,720
ASU 2014-09
Revenue from Contracts with Clients
Non-interest income	24,759	18,061	62,470	55,458
Contract balances	0		0		$ 0
ASU 2014-09 \| In-scope of Topic 606
Revenue from Contracts with Clients
Non-interest income	8,864	8,831	25,768	26,048
(Gain) loss on OREO sales, net	(6,514)	(450)	(7,200)	(386)
Total Revenue	15,378	9,281	32,968	26,434
ASU 2014-09 \| In-scope of Topic 606 \| Service Charges and other fees
Revenue from Contracts with Clients
Non-interest income	5,112	5,145	14,822	15,328
ASU 2014-09 \| In-scope of Topic 606 \| Bank card fees
Revenue from Contracts with Clients
Non-interest income	3,752	3,686	10,946	10,720
ASU 2014-09 \| Out-of-scope of Topic 606
Revenue from Contracts with Clients
Non-interest income	$ 15,895	$ 9,230	$ 36,702	$ 29,410

Stock-based Compensation and Em

Stock-based Compensation and Employee Benefits - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)shares	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)$ / sharesshares	Sep. 30, 2018USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares) \| shares			22,246
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense \| $	$ 200,000	$ 200,000	$ 500,000	$ 600,000
Unrecognized compensation expense \| $	1,000,000		$ 1,000,000
Unrecognized compensation cost, weighted-average period, years			2 years 2 months 12 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares) \| shares			84,520
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares			$ 35.04
Stock based compensation expense \| $	700,000	600,000	$ 1,600,000	1,600,000
Restricted Stock [Member] \| NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $	2,700,000		$ 2,700,000
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) \| shares			60,781
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares			$ 30.85
Stock based compensation expense \| $	500,000	$ 400,000	$ 1,200,000	$ 1,100,000
Performance stock units \| EPS target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares			$ 34.08
Performance stock units \| TSR target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares			$ 27.01
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 \| $	$ 2,900,000		$ 2,900,000
Unrecognized compensation cost, weighted-average period, years			1 year 10 months 24 days
Performance stock units \| NBH Holdings Corp. 2014 Omnibus Incentive Plan [Member] \| EPS target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards based on performance type			60.00%
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%
Employee Stock [Member] \| Employee Stock Purchase Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized \| shares	400,000		400,000
Maximum stock purchases by employees, value \| $			$ 25,000
Maximum stock purchases by employees (in shares) \| 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 (in shares) \| shares			16,556	12,515
Shares available for issuance \| shares	326,088		326,088
Minimum \| Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
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
Maximum \| Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Contractual term (in years)			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

Stock-based Compensation and _3

Stock-based Compensation and Benefits - Summary of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Options, beginning	1,264,876
Granted, Options	147,121
Exercised, Options	(705,135)
Forfeited, Options	(45,395)
Outstanding Options, ending	661,467	1,264,876
Options fully vested and exercisable at end of period, Options	403,695
Options expected to vest, Options	629,815
Outstanding, Weighted average exercise price, beginning	$ 22.33
Granted, Weighted average exercise price	34.19
Exercised, Weighted average exercise price	20.12
Forfeited, Weighted average exercise price	31.10
Outstanding, Weighted average exercised price, ending	26.73	$ 22.33
Options fully vested and exercisable at end of period, Weighted average exercise price	22.25
Options expected to vest, Weighted average exercise price	$ 26.37
Outstanding, Weighted average remaining contractual term in years	6 years 8 months 4 days	3 years 11 months 1 day
Options fully vested and exercisable at end of period, weighted average remaining contractual term in years	5 years 2 months 23 days
Options expected to vest, Weighted average remaining contractual term in years	6 years 6 months 21 days
Outstanding, Aggregate intrinsic value, beginning	$ 11,387
Outstanding, Outstanding, Aggregate intrinsic value, beginning	4,970	$ 11,387
Aggregate intrinsic Value of Options fully vested and exercisable at end of period	4,825
Options expected to vest, Aggregate Intrinsic Value	$ 4,956

Stock-based Compensation and _4

Stock-based Compensation and Benefits - Summary of Restricted Stock Activity (Details)	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested Restricted shares, Granted (in shares)	22,246
Unvested Restricted shares, Net adjustment due to performance (in shares)	22,246
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)	146,494
Unvested Restricted shares, Granted (in shares)	84,520
Unvested Restricted shares, Vested (in shares)	(73,879)
Unvested Restricted shares, Forfeited (in shares)	(21,053)
Unvested Restricted shares, Ending (in shares)	136,082
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	$ 28.19
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares	35.04
Weighted average grant-date fair value, Vested (in dollars per share) \| $ / shares	23.46
Weighted average grant-date fair value, Forfeited (in dollars per share) \| $ / shares	32.17
Weighted average grant-date fair value, Ending (in dollars per share) \| $ / shares	$ 34.40
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)	192,049
Unvested Restricted shares, Granted (in shares)	60,781
Unvested Restricted shares, Net adjustment due to performance (in shares)	22,246
Unvested Restricted shares, Vested (in shares)	(95,308)
Unvested Restricted shares, Forfeited (in shares)	(20,231)
Unvested Restricted shares, Ending (in shares)	159,537
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	$ 26.40
Weighted average grant-date fair value, Granted (in dollars per share) \| $ / shares	30.85
Weighted average grant-date fair value, Net adjustment due to performance (in dollars per share) \| $ / shares	17.36
Weighted average grant-date fair value, Vested (in dollars per share) \| $ / shares	18.02
Weighted average grant-date fair value, Forfeited (in dollars per share) \| $ / shares	31.50
Weighted average grant-date fair value, Ending (in dollars per share) \| $ / shares	$ 31.19

Common Stock - Narrative (Detai

Common Stock - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Common Stock - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	Aug. 05, 2016
Schedule Of Common Stock [Line Items]
Shares outstanding	31,169,086	30,769,063
Common Class A [Member]
Schedule Of Common Stock [Line Items]
Shares outstanding	31,169,086	30,769,063
Restricted issued but not yet vested, shares	136,082	146,494
New Board Authorized Share Repurchase Program
Schedule Of Common Stock [Line Items]
Stock repurchase program, authorized amount			$ 50
Remaining authorized amount	$ 12.6

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - $ / shares	9 Months Ended
Earnings Per Share - Narrative (Details) - $ / shares	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Earnings Per Share
Shares outstanding	31,169,086	30,759,595
Outstanding stock options to purchase common stock	661,467	1,262,077	1,264,876
Outstanding stock options to purchase common stock, per share	$ 26.73	$ 22.29	$ 22.33
Restricted shares outstanding	295,619	348,337

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Computation of Basic and Diluted Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share
Net income	$ 21,642	$ 18,240	$ 60,846	$ 44,216
Less: income allocated to participating securities	(25)	(18)	(69)	(49)
Income allocated to common shareholders	$ 21,617	$ 18,222	$ 60,777	$ 44,167
Weighted average shares outstanding for basic earnings per common share	31,281,970	30,869,683	31,133,982	30,700,977
Dilutive effect of equity awards	227,029	671,033	403,352	687,809
Weighted average shares outstanding for diluted earnings per common share	31,508,999	31,540,716	31,537,334	31,388,786
Basic earnings per share (in dollars per share)	$ 0.69	$ 0.59	$ 1.95	$ 1.44
Diluted earnings per share (in dollars per share)	$ 0.69	$ 0.58	$ 1.93	$ 1.41

Derivatives - FV of Derivatives

Derivatives - FV of Derivatives on the Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	$ 270	$ 17,436
Liability derivatives fair value	23,385	228
Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Asset derivatives fair value	13,094	4,062
Liability derivatives fair value	12,551	3,893
Other assets [Member] \| Interest rate products [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	270	17,436
Other assets [Member] \| Interest rate products [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Asset derivatives fair value	10,736	3,191
Other assets [Member] \| Interest Rate Lock Commitments [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Asset derivatives fair value	2,126	871
Other assets [Member] \| Forward Contracts [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Asset derivatives fair value	232
Other liabilities [Member] \| Interest rate products [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	23,385	228
Other liabilities [Member] \| Interest rate products [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Liability derivatives fair value	11,646	3,349
Other liabilities [Member] \| Interest Rate Lock Commitments [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Liability derivatives fair value	250	72
Other liabilities [Member] \| Forward Contracts [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Liability derivatives fair value	$ 655	$ 472

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Derivatives - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Termination value of derivatives in net liability position	$ 36.8
Collateral Already Posted, Aggregate Fair Value	39.1
Hedged Loans	429.4	$ 522.7
Cumulative fair value hedge adjustment	23.5	13.2
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Notional amount		50.1
Interest Rate Lock Commitments Notional Amount Member
Derivative [Line Items]
Notional amount	157.2
Forward Loan Sales Commitments Notional Amount Member
Derivative [Line Items]
Notional amount	298.5
Forward Contract Notional [Member]
Derivative [Line Items]
Notional amount		77.6
Designated as Hedging Instrument [Member] \| Interest rate swap derivatives [Member]
Derivative [Line Items]
Notional amount	427.2	473.4
Not Designated as Hedging Instrument, Economic Hedge [Member] \| Interest rate swap derivatives [Member]
Derivative [Line Items]
Notional amount	$ 462.4	$ 206.8

Derivatives - Derivatives on th

Derivatives - Derivatives on the Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	$ 672	$ (1,231)	$ 1,578	$ (84)
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	5,809	4,516	(11,791)	21,856
Amount of (loss) recognized in income on hedged items	(3,313)	(4,719)	11,604	(21,983)
Interest rate products [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member] \| Other Non-Interest income [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	(198)	5	(761)	(120)
Interest rate products [Member] \| Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest income [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	5,809	4,516	(11,791)	21,856
Amount of (loss) recognized in income on hedged items	(3,313)	(4,719)	11,604	(21,983)
Forward Contracts [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member] \| Mortgage banking income [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	348	(425)	49	988
Interest Rate Lock Commitments [Member] \| Not Designated as Hedging Instrument, Economic Hedge [Member] \| Mortgage banking income [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in income on derivatives	$ 522	$ (811)	$ 2,290	$ (952)

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Commitment And Contingencies [Line Items]
Loan commitments	$ 801.1	$ 773.5
Mortgage Repurchase Reserve	2.5	3.4
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Standby letters of credit	$ 11.7	$ 10.6

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Total Unfunded Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 812,847	$ 784,077
Commitments to fund loans [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	216,363	183,946
Unfunded Commitment Line Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	584,779	589,573
Commercial And Standby Letters Of Credit [Member]
Commitment And Contingencies [Line Items]
Total unfunded commitments	$ 11,705	$ 10,558

Fair Value Measurements - Table

Fair Value Measurements - Tables of Financial Instruments Measured At Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	$ 878,457	$ 860,082
Total liabilities at fair value	35,936	4,121
Loans held for sale member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	204,602	48,120
Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	441	441
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	103,885	146,642
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	556,165	643,381
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	876,099	859,211
Total liabilities at fair value	35,031	3,577
Level 2 [Member] \| Loans held for sale member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	204,602	48,120
Level 2 [Member] \| Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	441	441
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	103,885	146,642
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	556,165	643,381
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,358	871
Total liabilities at fair value	905	544
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	11,006	20,627
Total liabilities at fair value	35,031	3,577
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	11,006	20,627
Total liabilities at fair value	35,031	3,577
Mortgage banking derivatives \| Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,358	871
Total liabilities at fair value	905	544
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	2,358	871
Total liabilities at fair value	$ 905	$ 544

Fair Value Measurements - Tab_2

Fair Value Measurements - Table of Changes in Level 3 Financial Instruments (Details) - Derivative Financial Instruments Assets and Liabilities [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 327
Gain included in earnings, net	2,339
Ending Balance	$ 1,453

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)loan	Sep. 30, 2018USD ($)loan	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 4,401,917	$ 3,905,311	$ 4,092,308
Impairment on other real estate owned	872	$ 220
Impairment on fixed assets related to banking center consolidations	898
Net Book Balance Of Fixed Assets Sold	$ 3,400
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of Loans measured \| loan	8	5
Loans	$ 5,900	$ 5,200
Nonrecurring Loans Reserves	$ 1,800	1,400
Impaired Loans [Member] \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.00%
Impaired Loans [Member] \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	25.00%
Mortgage servicing rights member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Mortgage Servicing Rights	$ (453)	$ 0
Mortgage servicing rights member \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	9.50%
Mortgage servicing rights member \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	10.50%

Fair Value Measurements - Input

Fair Value Measurements - Inputs Used to Determine Fair Values of Oreo are Considered Level 3 Inputs in Fair Value Hierarchy (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	$ 878,457		$ 860,082
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	51,170	$ 73,383
Losses From Fair Value Changes	9,794	1,770
Impaired loans [Member] \| Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	37,002	34,578
Losses From Fair Value Changes	7,571	1,482
Other Real Estate Owned [Member] \| Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	7,904	35,135
Losses From Fair Value Changes	872	220
Mortgage servicing rights member \| Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2,879	3,670
Losses From Fair Value Changes	453	$ 68
Premise and Equipment [Member] \| Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	3,385
Losses From Fair Value Changes	$ 898

Fair Value Measurements - Tab_3

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) - Mortgage servicing rights member	Sep. 30, 2019
Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Servicing assets measurement input (as a percent)	17.9
Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Servicing assets measurement input (as a percent)	26.7

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Schedule of Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
ASSETS:
Cash and cash equivalents	$ 116,919	$ 109,556
Investment securities available-for-sale (at fair value)	661,129	791,102
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	189,982	235,398
Non-marketable securities	27,277	27,555
Loans receivable	4,363,207	4,056,616
Carrying amount of loan investments	4,401,917	4,092,308	$ 3,905,311
Loans held-for-sale	204,602	48,120
LIABILITIES:
Time deposits	1,067,301	1,080,529
Securities sold under agreements to repurchase	62,735	66,047
Federal Home Loan Bank advances	303,897	301,660
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)	103,885	146,642
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	127,008	157,115
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	556,165	643,381
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	62,974	78,283
Other Securities [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	469	469
Municipal [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	610	610
Carrying Amount [Member] \| Level 1 [Member]
ASSETS:
Cash and cash equivalents	116,919	109,556
Carrying Amount [Member] \| Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	103,885	146,642
Non-marketable securities	27,277	27,555
Loans held-for-sale	204,602	48,120
Accrued interest receivable	22,936	17,852
LIABILITIES:
Deposit transaction accounts	3,666,559	3,445,092
Time deposits	1,067,301	1,080,529
Securities sold under agreements to repurchase	62,735	66,047
Federal Home Loan Bank advances	303,897	301,660
Accrued interest payable	9,508	6,889
Derivative liability	35,031	3,577
Carrying Amount [Member] \| Level 3 [Member]
ASSETS:
Loans receivable	4,401,917	4,092,308
Carrying Amount [Member] \| Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] \| Level 2 [Member]
ASSETS:
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	127,008	157,115
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)	556,165	643,381
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	62,974	78,283
Carrying Amount [Member] \| Other Securities [Member] \| Level 3 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	469	469
Carrying Amount [Member] \| Municipal [Member] \| Level 2 [Member]
ASSETS:
Municipal obligations	441	441
Carrying Amount [Member] \| Municipal [Member] \| Level 3 [Member]
ASSETS:
Municipal obligations	169	169
Estimated Fair Value [Member] \| Level 1 [Member]
ASSETS:
Cash and cash equivalents	116,919	109,556
Estimated Fair Value [Member] \| Level 2 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	103,885	146,642
Non-marketable securities	27,277	27,555
Loans held-for-sale	204,602	48,120
Accrued interest receivable	22,936	17,852
LIABILITIES:
Deposit transaction accounts	3,666,559	3,445,092
Time deposits	1,067,793	1,068,233
Securities sold under agreements to repurchase	62,735	66,047
Federal Home Loan Bank advances	304,184	301,933
Accrued interest payable	9,508	6,889
Derivative liability	35,031	3,577
Estimated Fair Value [Member] \| Level 3 [Member]
ASSETS:
Loans receivable	4,518,410	4,082,146
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:
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	127,972	154,412
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)	556,165	643,381
Mortgage-backed securities-residential mortgage pass-through securities issued or guaranteed by U.S. Government agencies or sponsored enterprises held-to-maturity	62,679	76,514
Estimated Fair Value [Member] \| Other Securities [Member] \| Level 3 [Member]
ASSETS:
Investment securities available-for-sale (at fair value)	469	469
Estimated Fair Value [Member] \| Municipal [Member] \| Level 2 [Member]
ASSETS:
Municipal obligations	441	441
Estimated Fair Value [Member] \| Municipal [Member] \| Level 3 [Member]
ASSETS:
Municipal obligations	169	169
Interest rate swap derivatives [Member] \| Carrying Amount [Member] \| Level 2 [Member]
ASSETS:
Derivative asset	11,006	20,627
Interest rate swap derivatives [Member] \| Estimated Fair Value [Member] \| Level 2 [Member]
ASSETS:
Derivative asset	11,006	20,627
Mortgage banking derivatives \| Carrying Amount [Member] \| Level 3 [Member]
ASSETS:
Derivative asset	2,358	871
LIABILITIES:
Derivative liability	905	544
Mortgage banking derivatives \| Estimated Fair Value [Member] \| Level 3 [Member]
ASSETS:
Derivative asset	2,358	871
LIABILITIES:
Derivative liability	$ 905	$ 544

Acquisition Activities - Narrat

Acquisition Activities - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Closing price	$ 32.43
Acquisition related expenses			$ 0		$ 8,000
Amortization of acquired identifiable intangibles		$ 295	$ 511	$ 887	$ 1,817
Peoples Inc [Member]
Business Acquisition [Line Items]
Cash	$ 36,189
Cash consideration	3,398,477
Restricted cash placed in escrow	$ 10,000
Transaction value	146,402
Mortgage repurchase reserve	4,000
Gross contractual amounts receivable	713,600
Loans not expected to be collected	$ 2,100

Acquisition Activities - Summar

Acquisition Activities - Summary of Net Assets Acquired (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2018	Sep. 30, 2019	Dec. 31, 2018
Consideration:
Goodwill		$ 115,027	$ 115,027
Closing price	$ 32.43
Core Deposits
Assets:
Intangible asset		$ 48,800
Peoples Inc [Member]
Assets:
Cash and due from banks	$ 105,173
Investment securities available-for-sale (at fair value)	118,512
Non-marketable securities	4,796
Loans, net	542,707
Loans held for sale	54,260
Other real estate owned	1,253
Premises and equipment, net	18,584
Other assets	15,361
Total assets acquired	875,424
Liabilities:
Total deposits	729,911
FHLB borrowings	33,825
Other liabilities	20,683
Total liabilities assumed	784,419
Identifiable net assets acquired	91,005
Consideration:
Common stock paid	110,213
Cash	36,189
Total Consideration	146,402
Goodwill	55,397
Peoples Inc [Member] \| Core Deposits
Assets:
Intangible asset	$ 10,477
Amortization period for intangible assets	10 years
Peoples Inc [Member] \| Mortgage servicing rights
Assets:
Intangible asset	$ 4,301

Subsequent Event (Details)

Subsequent Event (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Subsequent Event (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Subsequent Event
Gain (loss) on OREO sales, net	$ 6,514	$ 450	$ 7,200	$ 386
Other real estate owned	$ 7,904	$ 35,135	$ 7,904	$ 35,135	$ 10,596	$ 10,491