Byline Bancorp (BY) 10-Q 14 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 14, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	BY
Entity Registrant Name	Byline Bancorp, Inc.
Entity Central Index Key	1,702,750
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		29,312,600

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 16,193	$ 17,735
Interest bearing deposits with other banks	46,043	28,798
Cash and cash equivalents	62,236	46,533
Securities available-for-sale, at fair value	584,684	608,560
Securities held-to-maturity, at amortized cost (fair value September 30, 2017—$122,266, December 31, 2016—$138,082)	121,453	138,846
Restricted stock, at cost	10,628	14,993
Loans held for sale	2,087	23,976
Loans and leases:
Loans and leases	2,216,499	2,148,011
Allowance for loan and lease losses	(15,980)	(10,923)
Net loans and leases	2,200,519	2,137,088
Servicing assets, at fair value	21,669	21,091
Accrued interest receivable	7,183	6,866
Premises and equipment, net	96,334	102,074
Assets held for sale	12,938	14,748
Other real estate owned, net	13,859	16,570
Goodwill	51,975	51,975
Other intangible assets, net	17,522	19,826
Bank-owned life insurance	5,680	6,557
Deferred tax assets, net	60,350	67,760
Due from counterparty	21,084
Other assets	15,241	18,367
Total assets	3,305,442	3,295,830
LIABILITIES
Non-interest bearing demand deposits	753,662	724,457
Interest bearing deposits:
NOW, savings accounts, and money market accounts	1,040,774	989,421
Time deposits	726,493	776,516
Total deposits	2,520,929	2,490,394
Accrued interest payable	1,184	2,427
Line of credit		20,650
Federal Home Loan Bank advances	234,559	313,715
Securities sold under agreements to repurchase	30,807	17,249
Junior subordinated debentures issued to capital trusts, net	27,482	26,926
Accrued expenses and other liabilities	30,948	41,811
Total liabilities	2,845,909	2,913,172
STOCKHOLDERS’ EQUITY
Preferred stock	10,438	25,441
Common stock, voting $0.01 par value at September 30, 2017 and no par value at December 31, 2016; 150,000,000 shares authorized at September 30, 2017 and December 31, 2016; 29,305,400 shares issued and outstanding at September 30, 2017 and 24,616,706 issued and outstanding at December 31, 2016	292
Additional paid-in capital	391,040	313,552
Retained earnings	62,311	50,933
Accumulated other comprehensive loss, net of tax	(4,548)	(7,268)
Total stockholders’ equity	459,533	382,658
Total liabilities and stockholders’ equity	$ 3,305,442	$ 3,295,830

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) $ in Thousands	Dec. 31, 2016USD ($)$ / sharesshares
Statement Of Financial Position [Abstract]
Securities held-to-maturity, fair value | $	$ 138,082
Common stock, voting no par value | $ / shares	$ 0
Common stock, voting shares authorized	150,000,000
Common stock, voting shares issued	24,616,706
Common stock, voting shares outstanding	24,616,706

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
INTEREST AND DIVIDEND INCOME
Interest and fees on loans and leases	$ 30,933	$ 19,081	$ 88,510	$ 56,334
Interest on taxable securities	3,720	3,312	11,213	10,492
Interest on tax-exempt securities	174	152	458	509
Other interest and dividend income	217	112	666	254
Total interest and dividend income	35,044	22,657	100,847	67,589
INTEREST EXPENSE
Deposits	2,112	1,063	5,518	3,281
Federal Home Loan Bank advances	850	200	2,282	371
Subordinated debentures and other borrowings	670	529	2,286	1,571
Total interest expense	3,632	1,792	10,086	5,223
Net interest income	31,412	20,865	90,761	62,366
PROVISION FOR LOAN AND LEASE LOSSES	3,900	1,683	9,306	5,348
Net interest income after provision for loan and lease losses	27,512	19,182	81,455	57,018
NON-INTEREST INCOME
Fees and service charges on deposits	1,418	1,465	3,985	4,227
Servicing fees	959		2,954
ATM and interchange fees	1,495	1,470	4,342	4,392
Net gains on sales of securities available-for-sale		802	8	3,231
Net gains (losses) on sales of loans	7,499	(60)	24,026	(39)
Fees on mortgage loan sales, net		46	2	101
Other non-interest income	547	1,053	2,102	3,350
Total non-interest income	11,918	4,776	37,419	15,262
NON-INTEREST EXPENSE
Salaries and employee benefits	16,323	11,266	50,151	34,206
Occupancy expense, net	3,301	3,358	10,525	10,511
Equipment expense	630	516	1,809	1,519
Loan and lease related expenses	891	443	2,569	1,090
Legal, audit and other professional fees	1,608	1,065	4,369	3,785
Data processing	2,399	1,990	7,255	5,760
Net loss recognized on other real estate owned and other related expenses	565	292	136	1,386
Regulatory assessments	326	502	894	1,930
Other intangible assets amortization expense	769	747	2,307	2,242
Advertising and promotions	196	156	803	454
Telecommunications	351	370	1,165	1,284
Other non-interest expense	3,706	1,679	7,182	5,521
Total non-interest expense	31,065	22,384	89,165	69,688
INCOME BEFORE PROVISION FOR INCOME TAXES	8,365	1,574	29,709	2,592
PROVISION (BENEFIT) FOR INCOME TAXES	(1,390)	9	7,248	(222)
NET INCOME	9,755	1,565	22,461	2,814
Dividends on preferred shares	195		11,081
INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 9,560	$ 1,565	$ 11,380	$ 2,814
EARNINGS PER COMMON SHARE
Basic	$ 0.33	$ 0.08	$ 0.43	$ 0.15
Diluted	$ 0.32	$ 0.08	$ 0.43	$ 0.15
Weighted average common shares outstanding for basic earnings per common share	29,246,900	19,497,811	26,194,025	18,838,354
Diluted weighted average common shares outstanding for diluted earnings per common share	29,752,331	19,763,434	26,697,841	19,103,977

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income	$ 9,755	$ 1,565	$ 22,461	$ 2,814
Securities available-for-sale
Unrealized holding gains (losses) arising during the period	1,473	(953)	4,920	12,465
Reclassification adjustments for net gains included in net income		(802)	(8)	(3,231)
Tax effect	303		(1,587)
Net of tax	1,776	(1,755)	3,325	9,234
Cash flow hedges
Unrealized holding gains (losses) arising during the period	17	398	(1,408)	207
Reclassification adjustments for losses included in net income	159	4	426	4
Tax effect	(88)		377
Net of tax	88	402	(605)	211
Beginning balance			382,658	188,274
Total other comprehensive income (loss)	1,864	(1,353)	2,720	9,445
Ending balance	459,533	251,104	459,533	251,104
Comprehensive income	11,619	212	25,181	12,259
Gains (Losses) on Cash Flow Hedges
Cash flow hedges
Beginning balance			2,233
Total other comprehensive income (loss)			(605)	211
Ending balance	1,628	211	1,628	211
Unrealized Gains (Losses) on Available-for-Sale Securities
Cash flow hedges
Beginning balance			(9,501)	(5,707)
Total other comprehensive income (loss)			3,325	9,234
Ending balance	(6,176)	3,527	(6,176)	3,527
Total Accumulated Other Comprehensive Income (Loss)
Cash flow hedges
Beginning balance			(7,268)	(5,707)
Total other comprehensive income (loss)			2,720	9,445
Ending balance	$ (4,548)	$ 3,738	$ (4,548)	$ 3,738

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2015	$ 188,274	$ 15,003		$ 194,774	$ (15,796)	$ (5,707)
Beginning balance, shares at Dec. 31, 2015		15,003	17,332,775
Net income	2,814				2,814
Other comprehensive income, net of tax	9,445					9,445
Issuance of common stock, net of issuance cost	50,018			50,018
Issuance of common stock, net of issuance cost, shares			3,078,075
Share-based compensation expense	553			553
Ending balance at Sep. 30, 2016	251,104	$ 15,003		245,345	(12,982)	3,738
Ending balance, shares at Sep. 30, 2016		15,003	20,410,850
Beginning balance at Dec. 31, 2016	382,658	$ 25,441		313,552	50,933	(7,268)
Beginning balance, shares at Dec. 31, 2016		25,441	24,616,706
Net income	22,461				22,461
Other comprehensive income, net of tax	2,720					2,720
Issuance of common stock in connection with merger			$ 246	(246)
Repurchase of preferred stock	(15,003)	$ (15,003)
Repurchase of preferred stock, shares		(15,003)
Issuance of common stock, net of issuance cost	76,829		$ 46	76,783
Issuance of common stock, net of issuance cost, shares			4,630,194
Issuance of common stock in connection with restricted stock awards, shares			58,900
Forfeiture of restricted stock awards, shares			(400)
Cash dividends declared on preferred stock	(11,081)				(11,081)
Cash paid in lieu of fractional shares	(2)				(2)
Share-based compensation expense	951			951
Ending balance at Sep. 30, 2017	$ 459,533	$ 10,438	$ 292	$ 391,040	$ 62,311	$ (4,548)
Ending balance, shares at Sep. 30, 2017		10,438	29,305,400

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 22,461	$ 2,814
Adjustments to reconcile net income to net cash from operating activities:
PROVISION FOR LOAN AND LEASE LOSSES	9,306	5,348
Impairment loss on assets held for sale	951	408
Depreciation and amortization of premises and equipment	3,919	3,814
Net amortization of securities	3,544	5,673
Net gains on sales of securities available-for-sale	(8)	(3,231)
Net gains on sales of assets held for sale	(167)	(967)
Net (gains) losses on sales of loans	(24,026)	39
Originations of mortgage loans held for sale		(4,045)
Proceeds from mortgage loans sold	151	4,512
Originations of government guaranteed loans	(202,176)
Proceeds from government guaranteed loans sold	228,852
Accretion of premiums and discounts on acquired loans, net	(24,746)	(24,479)
Net change in servicing assets	(578)
Net valuation adjustments on other real estate owned	367	904
Net gains on sales of other real estate owned	(1,538)	(1,134)
Other intangible assets amortization expense	2,307	2,242
Amortization of time deposit premium	(759)	(66)
Amortization of Federal Home Loan Bank advances premium	(156)
Accretion of junior subordinated debentures discount	556	660
Share-based compensation expense	951	553
Deferred tax provision	6,196
Increase in cash surrender value of bank owned life insurance	(209)	(184)
Gain on death benefit of bank owned life insurance	(313)
Changes in assets and liabilities:
Accrued interest receivable	(345)	(659)
Other assets	530	(436)
Accrued interest payable	(1,243)	(588)
Accrued expenses and other liabilities	(11,382)	(3,497)
Net cash provided by (used in) operating activities	12,445	(12,319)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of securities available-for-sale	(34,814)	(526,084)
Proceeds from maturities and calls of securities available-for-sale	7,672	84,272
Proceeds from paydowns of securities available-for-sale	53,171	81,522
Proceeds from sales of securities available-for-sale	8	507,362
Purchases of securities held-to-maturity		(59,436)
Proceeds from maturities and calls of securities held-to-maturity	655
Proceeds from paydowns of securities held-to-maturity	15,597	21,881
Purchases of Federal Home Loan Bank stock	(9,855)	(4,642)
Federal Home Loan Bank stock repurchases	14,220	1,000
Proceeds from other loans sold	9,984
Net change in loans and leases	(63,502)	(357,862)
Purchases of premises and equipment	(2,253)	(4,515)
Proceeds from sales of premises and equipment		88
Proceeds from sales of assets held for sale	4,398	2,126
Proceeds from sales of other real estate owned	9,583	13,945
Proceeds from bank owned life insurance death benefit	1,399
Net cash provided by (used in) investing activities	6,263	(240,343)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	31,294	62,285
Proceeds from Federal Home Loan Bank advances	1,993,000	4,967,000
Repayments of Federal Home Loan Bank advances	(2,072,000)	(4,822,000)
Repayments of line of credit	(20,650)
Net increase in securities sold under agreements to repurchase	13,558	1,435
Dividends paid on preferred stock	(11,081)
Cash paid in lieu of fractional shares	(2)
Proceeds from issuance of common stock	76,829	50,018
Proceeds from issuance of preferred stock	1,050
Repurchase of preferred stock	(15,003)
Net cash provided by (used in) financing activities	(3,005)	258,738
NET INCREASE IN CASH AND CASH EQUIVALENTS	15,703	6,076
CASH AND CASH EQUIVALENTS, beginning of period	46,533	44,884
CASH AND CASH EQUIVALENTS, end of period	62,236	50,960
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	11,689	5,217
Cash payments (refunds) during the period for taxes	2,121	(250)
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Change in fair value of available-for-sale securities, net of tax	3,325	9,234
Change in fair value of cash flow hedges, net of tax	(605)	211
Delayed payments of mortgage-backed securities	389	447
Transfers of loans to loans held for sale	10,061	1,477
Transfers of loans to other real estate owned	5,701	3,721
Internally financed sale of other real estate owned		1,447
Transfers of land and premises to assets held for sale	3,372	$ 10,486
Transfers of premises and equipment to other assets	702
Due from counterparty	$ 21,084

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Note 1—Basis of Presentation These unaudited interim condensed consolidated financial statements include the accounts of Byline Illinois state chartered These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). In preparing these financial statements, the Company has evaluated events and transactions subsequent to September 30, 2017 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information in footnote disclosures normally included in financial statements prepared in accordance with GAAP has been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Consolidated Financial Statements for the years ended December 31, 2016 and 2015. In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 855, “Subsequent Events,” the Company’s management has evaluated subsequent events for potential recognition or disclosure through the date of the issuance of these consolidated financial statements. No subsequent events were identified that would have required a change to the consolidated financial statements or disclosure in the notes to the consolidated financial statements. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
Accounting Changes And Error Corrections [Abstract]
Recently Issued Accounting Pronouncements	Note 2—Recently Issued Accounting Pronouncements The following reflect recent accounting pronouncements that have been adopted or are pending adoption by the Company. As the Company qualifies as an emerging growth company and has elected the extended transition period for complying with new or revised accounting pronouncements, it is not subject to new or revised accounting standards applicable to public companies during the extended transition period. The accounting pronouncements pending adoption below reflect effective dates for the Company as an emerging growth company with the extended transition period. Revenue from Contracts with Customers In May 2014, FASB issued Accounting Standards Update (“ASU”) No. 2014-09, deferred by ASU No. 2015-14 and clarifying standards, Revenue from Contracts with Customers , which creates Topic 606 and supersedes Topic 605, Revenue Recognition . The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In general, the new guidance requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Under the terms of ASU No. 2015-14 the standard is effective for interim and annual periods beginning after December 15, 2017. Early application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. The Company is currently evaluating the provisions of ASU No. 2014-09 to determine the potential impact the standard will have on the Company’s Consolidated Financial Statements. As a financial institution, the Company’s largest component of revenue, interest income, is excluded from the scope of this ASU. The Company is currently evaluating which, if any, of its sources of non-interest income will be impacted by this ASU. Assuming the Company remains an emerging growth company, the Company expects to adopt this new guidance on January 1, 2019, with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be significant. In April 2016, FASB issued ASU No. 2016-10, Identifying Performance Obligations and Licensing . The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the following two aspects of Topic 606: (1) identifying performance obligations and (2) licensing implementation guidance, while retaining the related principles for those areas. The amendments in this ASU affect the guidance in ASU 2014-09, discussed above, which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606, Revenues from Contracts with Customers . The Company is evaluating the provisions of this ASU in conjunction with ASU No. 2014-09 to determine the potential impact Topic 606 and its amendments will have on the Company’s Consolidated Financial Statements. In May 2016, FASB issued ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients Revenue from Contracts with Customers Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities . The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. The amendments simplify the impairment assessment of equity investments without readily determinable fair values. The amendments also eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This amendment excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or in the accompanying notes to the financial statements. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the provisions of ASU No. 2016-01 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods beginning January 1, 2019 and is not expected to have a significant impact on the Company’s Consolidated Financial Statements. Leases (Topic 842) In February 2016, FASB issued ASU No. 2016-02, Leases . The amendments in this ASU require lessees to recognize the following for all leases (with the exception of short-term) at the commencement date; a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. The amendments in this ASU leave lessor accounting largely unchanged, although certain targeted improvements were made to align lessor accounting with the lessee accounting model. This ASU simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2020. The Company expects an increase in assets and liabilities as a result of recognizing additional lease contracts where the Company is lessee. Derivatives and Hedging (Topic 815) In March 2016, FASB issued ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships . The amendments in this ASU clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 (Derivatives and Hedging) does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The amendments in this ASU are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity has an option to apply the amendments in this ASU on either a prospective basis or a modified retrospective basis. Early adoption is permitted, including adoption in an interim period. This ASU became effective for the Company on January 1, 2017 and did not have a material impact on the Company’s Consolidated Financial Statements. In March 2016, FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities Compensation—Stock Compensation (Topic 718) In March 2016, FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting . FASB issued this ASU as part of its Simplification Initiative. The areas for simplification in this ASU involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Amendments in this ASU relate to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures, and intrinsic value should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments in this ASU require recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term should be applied prospectively. An entity may elect to apply the amendments in this ASU related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. This ASU became effective for the Company on January 1, 2017 and did not have a material impact on the Company’s Consolidated Financial Statements. In May 2017, the FASB issued ASU 2017-09, Scope of Modification Accounting Financial Instruments—Credit Losses (Topic 326) In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. The amendments in this ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2021. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements. While the Company has not quantified the impact of this ASU, it does expect changing from the current incurred loss model to an expected loss model will result in an earlier recognition of losses. Statement of Cash Flows (Topic 230) In August 2016, FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments . There is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230 and other Topics. This ASU addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. Those eight issues are (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principle. Current GAAP either is unclear or does not include specific guidance on these eight cash flow classification issues. These amendments provide guidance for each of the eight issues, thereby reducing current and potential future diversity in practice. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company is currently evaluating the provisions of ASU No. 2016-15 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (230), Restricted Cash Income Taxes (Topic 740) In October 2016, the FASB issued ASU No. 2016-16, Income Taxes, Intra-Entity Transfers of Assets Other Than Inventory . The ASU was issued to improve the accounting for income tax consequences of intra-entity transfers of assets other than inventory. Current GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party; this update clarifies that an entity should recognize the income tax consequences of an intra-entity transfer of assets other than inventory when the transfer occurs. The amendment is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption of the update is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company does not expect this ASU to have a material impact on the Company’s Consolidated Financial Statements. Consolidation (Topic 810) In October 2016, the FASB issued ASU No. 2016-17, Consolidation , Interests Held through Related Parties That Are under Common Control. The ASU was issued to amend the consolidation guidance on how a reporting entity that is the single decision maker of a variable interest entity (“VIE”) should treat indirect interests in the entity held through related parties that are under common control with the reporting entity when determining whether it is the primary beneficiary of that VIE. The primary beneficiary of a VIE is the reporting entity that has a controlling financial interest in a VIE and, therefore, consolidates the VIE. A reporting entity has an indirect interest in a VIE if it has a direct interest in a related party that, in turn, has a direct interest in the VIE. The amendment is effective for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of the update is permitted. The Company adopted this new authoritative guidance on January 1, 2017 and it did not have an impact on the Company’s Consolidated Financial Statements. Business Combinations (Topic 805) In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business . The guidance clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. This guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company does not expect a material impact of this ASU on the Company’s Consolidated Financial Statements. Intangibles—Goodwill and Other (Topic 350) In January 2017, FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment . The amendments in this ASU are intended to reduce the cost and complexity of the goodwill impairment test by eliminating step two from the impairment test. The amendments modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. Under the amendments in this ASU, an entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. An impairment charge should be recognized for the amount which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The amendments in this ASU are effective for the Company’s annual or any interim goodwill impairment test in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is early adopting these amendments in 2017 and does not expect a material impact on the Company’s Consolidated Financial Statements. Other Income (Subtopic 610-20) In February 2017, the FASB issued ASU No. 2017-05, Other Income-Gains and Losses from the Derecognition of Nonfinancial Assets . This ASU will clarify the scope of Subtopic 610-20 and add guidance for partial sales of nonfinancial assets. The amendments should be applied either on retrospectively to each period presented or with a modified retrospective approach. The amendment is effective for annual periods beginning after December 15, 2018, and interim periods within annual periods beginning after December 15, 2019. The Company is currently evaluating the provisions of ASU No. 2017-05 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Nonrefundable Fees and Other Costs (Subtopic 310-20) In March 2017, FASB issued ASU No. 2017-08, Receivables—Nonrefundable Fees and Other Costs. The amendments in the ASU shorten the amortization period for certain callable debt securities held at a premium at the earliest call date. Under current GAAP, the Company amortizes the premium as an adjustment of yield over the contractual life of the instrument. As a result, upon exercise of a call on a callable debt security held at a premium, the unamortized premium is charged to earnings. The ASU shortens the amortization period for certain callable debt securities held at a premium and requires the premium to be amortized to the earliest call date. However, the amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments are effective for annual periods beginning after December 15, 2019, and interim periods within annual periods beginning after December 15, 2020. Early adoption is permitted. The Company is required to apply the amendments on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2020. The Company is currently evaluating the provisions of ASU No. 2017-08 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Acquisition of a Business

Acquisition of a Business	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Acquisition of a Business	Note 3—Acquisition On October 14, 2016, the Company acquired stock of Ridgestone Financial Services, Inc. (“Ridgestone”) and its subsidiaries under the terms of a definitive merger agreement (“Agreement”) dated June 9, 2016. Ridgestone operated two wholly-owned subsidiaries, Ridgestone Bank and RidgeStone Capital Trust I, and specialized in government guaranteed lending as a participant in the SBA and USDA lending programs. Ridgestone provided financial services through its two full-service banking offices in Brookfield, Wisconsin and Schaumburg, Illinois. In addition, Ridgestone had loan production offices located in Wisconsin (Green Bay and Wausau), Indiana (Indianapolis) and California (Newport Beach). Under the terms of the Agreement, each Ridgestone common share was converted into the right to receive, at the election of the stockholder (subject to proration as outlined in the Agreement), either cash or Company common stock, or the combination of both. Total consideration included aggregate cash in the amount of $36.8 million and the issuance of 4,199,791 shares of the Company’s common stock valued at $16.25 per common share. The transaction resulted in goodwill of $26.3 million, which is nondeductible for tax purposes, as this acquisition was a nontaxable transaction. Goodwill represents the premium paid over the fair value of the net tangible and intangible assets acquired and reflects related synergies expected from the combined operations. Acquisition advisory expenses related to the Ridgestone acquisition of $1.1 million are reflected in non-interest expense on the Consolidated Statements of Operations for the nine months ended September 30, 2016. Stock issuance costs were not material. There were no contingent assets or liabilities arising from the acquisition. The acquisition of Ridgestone was accounted for using the acquisition method of accounting in accordance with ASC Topic 805. Assets acquired, liabilities assumed and consideration exchanged were recorded at their respective acquisition date fair values. Determining the fair value of assets and liabilities involves significant judgment regarding methods and assumptions used to calculate estimated fair values. Fair values are preliminary and subject to refinement for up to one year after the closing date of the acquisition as additional information regarding the closing date fair values become available. Fair values are preliminary estimates due to deferred tax assets and deferred tax liabilities. The following table presents a summary of the estimates of fair values of assets acquired and liabilities assumed as of the acquisition date: Assets Cash and cash equivalents $ 25,480 Securities available-for-sale 27,662 Restricted stock 931 Loans held for sale 15,363 Loans 351,820 Servicing assets 20,295 Premises and equipment 2,011 Other real estate owned 1,525 Other intangible assets 486 Bank-owned life insurance 2,352 Other assets 8,228 Total assets acquired 456,153 Liabilities Deposits 361,370 Federal Home Loan Bank advances 9,773 Junior subordinated debentures 1,339 Accrued expenses and other liabilities 4,958 Total liabilities assumed 377,440 Net assets acquired $ 78,713 Consideration paid Common stock (4,199,791 shares issued at $16.25 per share) 68,247 Cash paid 36,753 Total consideration paid 105,000 Goodwill $ 26,287 The following table presents the acquired non-impaired loans as of the acquisition date: Fair value $ 312,166 Gross contractual amounts receivable 450,292 Estimate of contractual cash flows not expected to be collected (1) 19,661 Estimate of contractual cash flows expected to be collected 430,631 (1) Includes interest payments not expected to be collected due to loan prepayments as well as principal and interest payments not expected to be collected due to customer default. The discount on the acquired non-impaired loans is being accreted into income over the life of the loans on an effective yield basis. The following table provides the pro forma information for the results of operations for the three and nine months ended September 30, 2016, as if the acquisition had occurred on January 1, 2016. The pro forma results combine the historical results of Ridgestone into the Company’s Consolidated Statements of Operations, including the impact of certain acquisition accounting adjustments, which includes loan discount accretion, intangible assets amortization, deposit premium accretion and borrowing net discount amortization. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2016. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, provision for credit losses, expense efficiencies or asset dispositions. The acquisition-related expenses that have been recognized are included in net income in the following table. Three Months Ended Nine Months Ended September 30, 2016 September 30, 2016 Total revenues (net interest income and non-interest income) $ 44,595 $ 130,536 Net income (loss) $ 6,816 $ 17,603 Earnings per share—basic $ 0.29 $ 0.76 Earnings per share—diluted $ 0.28 $ 0.76 The operating results of the Company include the operating results produced by the acquired assets and assumed liabilities of Ridgestone for period from January 1, 2017 through September 30, 2017. Revenues and earnings of the acquired company since the acquisition date have not been disclosed as it is not practicable as Ridgestone was merged into the Company and separate financial information is not readily available.

Securities

Securities	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Securities	Note 4—Securities The following September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 14,998 $ — $ (73 ) $ 14,925 U.S. Government agencies 54,231 — (1,012 ) 53,219 Obligations of states, municipalities, and political subdivisions 32,619 129 (213 ) 32,535 Residential mortgage-backed securities Agency 329,782 7 (5,749 ) 324,040 Non-agency 25,429 87 (46 ) 25,470 Commercial mortgage-backed securities Agency 72,190 44 (1,477 ) 70,757 Non-agency 31,838 — (581 ) 31,257 Corporate securities 27,093 493 (62 ) 27,524 Other securities 3,626 1,387 (56 ) 4,957 Total $ 591,806 $ 2,147 $ (9,269 ) $ 584,684 September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 24,078 $ 317 $ (36 ) $ 24,359 Residential mortgage-backed securities Agency 56,453 275 (82 ) 56,646 Non-agency 40,922 364 (25 ) 41,261 Total $ 121,453 $ 956 $ (143 ) $ 122,266 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 14,995 $ 4 $ (79 ) $ 14,920 U.S. Government agencies 60,180 — (1,323 ) 58,857 Obligations of states, municipalities, and political subdivisions 16,271 60 (272 ) 16,059 Residential mortgage-backed securities Agency 376,800 — (8,640 ) 368,160 Non-agency 20,107 — (174 ) 19,933 Commercial mortgage-backed securities Agency 78,954 — (1,551 ) 77,403 Non-agency 32,061 — (1,009 ) 31,052 Corporate securities 17,065 350 (86 ) 17,329 Other securities 4,161 742 (56 ) 4,847 Total $ 620,594 $ 1,156 $ (13,190 ) $ 608,560 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 24,878 $ 105 $ (229 ) $ 24,754 Residential mortgage-backed securities Agency 67,692 35 (283 ) 67,444 Non-agency 46,276 50 (442 ) 45,884 Total $ 138,846 $ 190 $ (954 ) $ 138,082 The Company did not classify securities as trading during 2016 or during the nine months ended September 30, 2017. Gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2017 and December 31, 2016 are summarized as follows: Less than 12 Months 12 Months or Longer Total September 30, 2017 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Treasury Notes 5 $ 14,925 $ (73 ) $ — $ — $ 14,925 $ (73 ) U.S. Government agencies 9 28,418 (438 ) 24,801 (574 ) 53,219 (1,012 ) Obligations of states, municipalities and political subdivisions 23 14,431 (122 ) 2,082 (91 ) 16,513 (213 ) Residential mortgage-backed securities Agency 40 222,548 (3,356 ) 93,293 (2,393 ) 315,841 (5,749 ) Non-agency 1 4,789 (46 ) — — 4,789 (46 ) Commercial mortgage-backed securities Agency 7 39,378 (1,108 ) 19,740 (369 ) 59,118 (1,477 ) Non-agency 5 31,257 (581 ) — — 31,257 (581 ) Corporate securities 3 4,959 (62 ) — — 4,959 (62 ) Other securities 1 — — 1,938 (56 ) 1,938 (56 ) Total 94 $ 360,705 $ (5,786 ) $ 141,854 $ (3,483 ) $ 502,559 $ (9,269 ) Less than 12 Months 12 Months or Longer Total September 30, 2017 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Held-to-maturity Obligations of states, municipalities, and political subdivisions 7 $ 4,855 $ (36 ) $ — $ — $ 4,855 $ (36 ) Residential mortgage-backed securities Agency 9 20,287 (82 ) — — 20,287 (82 ) Non-agency 3 4,568 (25 ) — — 4,568 (25 ) Total 19 $ 29,710 $ (143 ) $ — $ — $ 29,710 $ (143 ) Less than 12 Months 12 Months or Longer Total December 31, 2016 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Treasury Notes 3 $ 9,918 $ (79 ) $ — $ — $ 9,918 $ (79 ) U.S. Government agencies 10 58,857 (1,323 ) — — 58,857 (1,323 ) Obligations of states, municipalities and political subdivisions 14 7,799 (259 ) 115 (13 ) 7,914 (272 ) Residential mortgage-backed securities Agency 41 364,713 (8,483 ) 3,447 (157 ) 368,160 (8,640 ) Non-agency 2 19,933 (174 ) — — 19,933 (174 ) Commercial mortgage-backed securities Agency 8 70,762 (1,488 ) 6,641 (63 ) 77,403 (1,551 ) Non-agency 5 31,052 (1,009 ) — — 31,052 (1,009 ) Corporate securities 4 5,097 (78 ) 2,522 (8 ) 7,619 (86 ) Other securities 1 — — 1,994 (56 ) 1,994 (56 ) Total 88 $ 568,131 $ (12,893 ) $ 14,719 $ (297 ) $ 582,850 $ (13,190 ) Less than 12 Months 12 Months or Longer Total December 31, 2016 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Held-to-maturity Obligations of states, municipalities, and political subdivisions 22 $ 16,235 $ (229 ) $ — $ — $ 16,235 $ (229 ) Residential mortgage-backed securities Agency 15 52,156 (283 ) — — 52,156 (283 ) Non-agency 5 29,245 (442 ) — — 29,245 (442 ) Total 42 $ 97,636 $ (954 ) $ — $ — $ 97,636 $ (954 ) Certain o The proceeds For the Three Months Ended For the Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Proceeds $ — $ 107,949 $ 8 $ 507,362 Gross gains — 912 8 3,341 Gross losses — (110 ) — (110 ) The amount income ( Securities pledged at September 30, 2017 and December 31, 2016 had carrying amounts of $226.0 million and $178.6 million, securities pledged for At September 30, 2017, the Amortized Cost Fair Value Available-for-sale Due in one year or less $ 5,289 $ 5,287 Due from one to five years 70,097 69,824 Due from five to ten years 42,448 42,006 Due after ten years 11,807 11,625 Mortgage-backed securities 459,239 451,524 Other securities with no defined maturity 2,926 4,418 Total $ 591,806 $ 584,684 Held-to-maturity Due from one to five years $ 524 $ 528 Due from five to ten years 13,735 13,835 Due after ten years 9,819 9,996 Mortgage-backed securities 97,375 97,907 Total $ 121,453 $ 122,266

Loan and Lease Receivables

Loan and Lease Receivables	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loan and Lease Receivables	Note 5—Loan Outstanding loan and lease receivables as of the dates shown were categorized as follows: September 30, December 31, 2017 2016 Commercial real estate $ 862,523 $ 796,950 Residential real estate 582,569 610,699 Construction, land development, and other land 94,639 141,122 Commercial and industrial 503,093 439,476 Installment and other 3,208 2,917 Lease financing receivables 168,924 155,999 Total loans and leases 2,214,956 2,147,163 Net unamortized deferred fees and costs (1,874 ) (2,119 ) Initial direct costs 3,417 2,967 Allowance for loan and lease losses (15,980 ) (10,923 ) Net loans and leases $ 2,200,519 $ 2,137,088 September 30, December 31, 2017 2016 Lease financing receivables Net minimum lease payments $ 183,035 $ 168,345 Unguaranteed residual values 1,580 1,787 Unearned income (15,691 ) (14,133 ) Total lease financing receivables 168,924 155,999 Initial direct costs 3,417 2,967 Lease financial receivables before allowance for lease losses $ 172,341 $ 158,966 At September 30, 2017 and December 31, 2016, total loans and leases included the guaranteed amount of U.S. Government guaranteed loans of $51.9 million and $34.8 million, respectively. At September 30, 2017 and December 31, 2016, installment and other loans included overdraft deposits of $483,000 and $1.0 million, respectively, which were reclassified as loans. At September 30, 2017 and December 31, 2016, loans and loans held for sale pledged as security for borrowings were $530.3 million and $507.2 million, respectively. Total loans and leases consist of originated loans and leases, acquired impaired loans and acquired non-impaired loans and leases. The minimum Minimum Lease Payments 2017 $ 15,345 2018 62,718 2019 48,463 2020 32,863 2021 17,699 Thereafter 5,947 Total $ 183,035 Originated Topic Topic September 30, 2017 Originated Acquired Impaired Acquired Non- Impaired Total Commercial real estate $ 463,020 $ 173,106 $ 225,759 $ 861,885 Residential real estate 398,062 152,149 32,451 582,662 Construction, land development, and other land 85,666 5,424 3,214 94,304 Commercial and industrial 390,331 11,433 100,291 502,055 Installment and other 2,726 488 38 3,252 Lease financing receivables 134,193 — 38,148 172,341 Total loans and leases $ 1,473,998 $ 342,600 $ 399,901 $ 2,216,499 December 31, 2016 Originated Acquired Impaired Acquired Non- Impaired Total Commercial real estate $ 338,752 $ 207,303 $ 250,289 $ 796,344 Residential real estate 394,168 175,717 40,853 610,738 Construction, land development, and other land 119,357 6,979 14,430 140,766 Commercial and industrial 309,097 13,464 115,677 438,238 Installment and other 2,021 574 364 2,959 Lease financing receivables 118,493 — 40,473 158,966 Total loans and leases $ 1,281,888 $ 404,037 $ 462,086 $ 2,148,011 The outstanding September 30, 2017 December 31, 2016 Outstanding Balance Carrying Value Outstanding Balance Carrying Value Commercial real estate $ 245,182 $ 173,106 $ 278,893 $ 207,303 Residential real estate 215,135 152,149 236,384 175,717 Construction, land development, and other land 13,511 5,424 15,292 6,979 Commercial and industrial 20,255 11,433 23,164 13,464 Installment and other 1,842 488 1,976 574 Total acquired impaired loans $ 495,925 $ 342,600 $ 555,709 $ 404,037 The following table summarizes the changes in accretable yield for acquired impaired loans for the three and nine months ended September 30, 2017 and 2016: Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Beginning balance $ 37,619 $ 35,663 $ 36,868 $ 43,915 Accretion to interest income (8,165 ) (5,859 ) (24,768 ) (20,071 ) Reclassification from nonaccretable difference 6,901 1,777 24,255 7,737 Ending balance $ 36,355 $ 31,581 $ 36,355 $ 31,581 Acquired non-impaired loans and leases —The unpaid principal balance and carrying value for acquired non-impaired loans and leases at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 December 31, 2016 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 232,016 $ 225,759 $ 259,055 $ 250,289 Residential real estate 32,984 32,451 41,282 40,853 Construction, land development, and other land 3,277 3,214 14,619 14,430 Commercial and industrial 111,167 100,291 125,806 115,677 Installment and other 352 38 402 364 Lease financing receivables 39,053 38,148 40,205 40,473 Total acquired non-impaired loans and leases $ 418,849 $ 399,901 $ 481,369 $ 462,086

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments	Note 6—Allowance for Loans and leases The following September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 3,668 $ 1,835 $ 327 $ 5,689 $ 344 $ 2,106 $ 13,969 Provisions 1,577 52 (111 ) 1,440 13 929 3,900 Charge-offs (186 ) (161 ) — (763 ) (327 ) (862 ) (2,299 ) Recoveries — — — — — 410 410 Ending balance $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 Nine months ended Beginning balance $ 1,945 $ 2,483 $ 742 $ 4,196 $ 334 $ 1,223 $ 10,923 Provisions 3,591 (400 ) (526 ) 3,932 23 2,686 9,306 Charge-offs (477 ) (357 ) — (1,762 ) (327 ) (2,399 ) (5,322 ) Recoveries — — — — — 1,073 1,073 Ending balance $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 Ending balance: Individually evaluated for impairment $ 1,186 $ 176 $ — $ 1,585 $ 2 $ — $ 2,949 Collectively evaluated for impairment 1,844 1,237 155 3,389 10 2,583 9,218 Loans acquired with deteriorated credit quality 2,029 313 61 1,392 18 — 3,813 Total allowance for loan and lease losses $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 14,928 $ 1,948 $ 565 $ 6,075 $ 2 $ — $ 23,518 Collectively evaluated for impairment 673,851 428,565 88,315 484,547 2,762 172,341 1,850,381 Loans acquired with deteriorated credit quality 173,106 152,149 5,424 11,433 488 — 342,600 Total loans and leases $ 861,885 $ 582,662 $ 94,304 $ 502,055 $ 3,252 $ 172,341 $ 2,216,499 September 30, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 2,119 $ 1,303 $ 489 $ 1,472 $ 367 $ 740 $ 6,490 Provisions 27 41 66 624 (3 ) 928 1,683 Charge-offs (1,078 ) 25 (95 ) (2 ) (9 ) (671 ) (1,830 ) Recoveries — — — — — 158 158 Ending balance $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 Nine months ended Beginning balance $ 2,280 $ 2,981 $ 232 $ 1,403 $ 357 $ 379 $ 7,632 Provisions 3,050 (980 ) 323 768 8 2,179 5,348 Charge-offs (4,262 ) (632 ) (95 ) (77 ) (10 ) (1,934 ) (7,010 ) Recoveries — — — — — 531 531 Ending balance $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 Ending balance: Individually evaluated for impairment $ — $ 339 $ — $ 192 $ 328 $ — $ 859 Collectively evaluated for impairment 669 534 413 1,264 1 1,155 4,036 Loans acquired with deteriorated credit quality 399 496 47 638 26 — 1,606 Total allowance for loan and lease losses $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 September 30, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 6,374 $ 2,553 $ — $ 192 $ 328 $ — $ 9,447 Collectively evaluated for impairment 377,090 438,446 104,369 244,566 1,055 154,557 1,320,083 Loans acquired with deteriorated credit quality 187,359 185,979 7,539 6,512 590 — 387,979 Total loans and leases $ 570,823 $ 626,978 $ 111,908 $ 251,270 $ 1,973 $ 154,557 $ 1,717,509 The Company increased the allowance for loan and lease losses by $2.0 million and $5.1 million for the three and nine months ended September 30, 2017, respectively. The Company increased the For acquired impaired loans, the Company increased the allowance for loan and lease losses by $559,000 and $2.2 million for the three and nine months ended September 30, 2017, respectively. The Company increased the allowance for loan and lease losses for acquired impaired loans by $8,000 for the three months ended September 30, 2016 and decreased the allowance for loan and lease losses for acquired impaired loans by $1.7 million for the nine months ended September 30, 2016. The following and September 30, 2017 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 9,541 $ 10,149 $ — Residential real estate 1,581 2,589 — Construction, land development and other land 565 565 — Commercial and industrial 3,465 3,652 — With an allowance recorded Commercial real estate 5,387 5,521 1,186 Residential real estate 367 387 176 Commercial and industrial 2,610 2,934 1,585 Installment and other 2 310 2 Total impaired loans $ 23,518 $ 26,107 $ 2,949 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 8,916 $ 9,502 $ — Residential real estate 804 1,999 — Commercial and Industrial 521 524 — With an allowance recorded Residential real estate 496 528 293 Commercial and industrial 861 869 396 Installment and other 328 361 328 Total impaired loans $ 11,926 $ 13,783 $ 1,017 The following tables summarize the average recorded investment and interest income recognized for loans and leases considered impaired, which excludes acquired impaired loans, for the periods ended as follows: September 30, 2017 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 10,605 $ 419 Residential real estate 1,698 33 Construction, land development and other land 269 2 Commercial and Industrial 2,391 253 With an allowance recorded Commercial real estate 1,043 287 Residential real estate 444 4 Construction, land development and other land 19 — Commercial and industrial 1,673 500 Installment and other 213 11 Total impaired loans $ 18,355 $ 1,509 September 30, 2016 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 4,129 $ 128 Residential real estate 2,479 65 Construction, land development and other land 96 — Commercial and industrial 12 — With an allowance recorded Commercial real estate 2,099 — Residential real estate 727 7 Construction, land development and other land 156 — Commercial and industrial 171 2 Installment and other 328 11 Total impaired loans $ 8,337 $ 192 For purposes The following September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Pass $ 617,061 $ 421,109 $ 73,781 $ 400,838 $ 2,761 $ 170,410 $ 1,685,960 Watch 44,273 4,871 11,947 71,752 3 214 133,060 Special Mention 11,958 2,513 2,587 10,104 — 894 28,056 Substandard 15,487 2,020 565 7,928 — 639 26,639 Doubtful — — — — — 184 184 Loss — — — — — — — Total $ 688,779 $ 430,513 $ 88,880 $ 490,622 $ 2,764 $ 172,341 $ 1,873,899 December 31, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Pass $ 536,499 $ 419,880 $ 129,732 $ 369,136 $ 2,052 $ 157,296 $ 1,614,595 Watch 38,707 10,885 2,897 52,872 4 324 105,689 Special Mention 5,377 3,116 1,158 1,258 1 512 11,422 Substandard 8,458 1,140 — 1,508 328 739 12,173 Doubtful — — — — — 95 95 Loss — — — — — — — Total $ 589,041 $ 435,021 $ 133,787 $ 424,774 $ 2,385 $ 158,966 $ 1,743,974 The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at September 30, 2017 and December 31, 2016: September 30, 2017 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 350 $ 596 $ — $ 8,672 $ 9,618 $ 679,161 $ 688,779 Residential real estate — 220 — 1,852 2,072 428,441 430,513 Construction, land development, and other land — — — 565 565 88,315 88,880 Commercial and industrial 2,245 416 — 3,537 6,198 484,424 490,622 Installment and other 2 — — — 2 2,762 2,764 Lease financing receivables 995 328 — 495 1,818 170,523 172,341 Total $ 3,592 $ 1,560 $ — $ 15,121 $ 20,273 $ 1,853,626 $ 1,873,899 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 2,944 $ 648 $ — $ 3,935 $ 7,527 $ 581,514 $ 589,041 Residential real estate 243 — — 1,118 1,361 433,660 435,021 Construction, land development, and other land 1,363 — — — 1,363 132,424 133,787 Commercial and industrial 6,066 374 — 958 7,398 417,376 424,774 Installment and other — — — 328 328 2,057 2,385 Lease financing receivables 2,070 390 — 445 2,905 156,061 158,966 Total $ 12,686 $ 1,412 $ — $ 6,784 $ 20,882 $ 1,723,092 $ 1,743,974 At September 30, 2017 and December 31, 2016, the September 30, 2017 and Loans modified three and nine months ended September 30, 2017 At September 30, 2017 and December 31, 2016, the nine months ended September 30, 2017 and 2016

Servicing Assets

Servicing Assets	9 Months Ended
	Sep. 30, 2017
Transfers And Servicing [Abstract]
Servicing Assets	Note 7—Servicing As part Loans serviced as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Loan portfolios serviced for: SBA guaranteed loans $ 1,001,845 $ 911,803 USDA guaranteed loans 87,589 106,125 Total $ 1,089,434 $ 1,017,928 Activity for the nine months ended September 30, 2017 is Nine Months Ended September 30, 2017 Beginning balance $ 21,091 Additions, net 4,675 Changes in fair value (4,097 ) Ending balance $ 21,669 Loan servicing income totaled $1.0 million and $3.0 million for the three and nine months ended September 30, 2017, respectively. The fair Generally, as interest rates rise on variable rate loans, loan prepayments increase due to an increase in refinance activity, which may result in a decrease in the fair value of servicing assets. Measurement of fair value is limited to the condition existing and the assumptions used as of a particular point in time, and those assumptions may change over time. Refer to Note 16—Fair Value Measurement for further details.

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2017
Banking And Thrift [Abstract]
Other Real Estate Owned	Note 8—Other Real Estate Owned The following table presents the change in other real estate owned (“OREO”) for the nine months ended September 30, 2017 and 2016. Nine Months Ended September 30, 2017 2016 Beginning balance $ 16,570 $ 26,715 Net additions to OREO 5,701 3,721 Proceeds from the sales of OREO (9,583 ) (15,392 ) Net gains on sales of OREO 1,538 1,134 Valuation adjustments (367 ) (904 ) Ending balance $ 13,859 $ 15,274 The recorded investment in residential mortgage loans secured by residential real estate properties (including purchased credit-impaired loans) for which foreclosure proceedings are in process totaled $2.0 million and $2.7 million at September 30, 2017 and December 31, 2016, respectively.

Goodwill, Core Deposit Intangib

Goodwill, Core Deposit Intangible and Other Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Core Deposit Intangible and Other Intangible Assets	Note 9—Goodwill, Core Deposit Intangible and Other Intangible Assets The following table summarizes the changes in the Company’s goodwill and core deposit intangible assets for the nine months ended September 30, 2017 and 2016: Nine Months Ended September 30, 2017 2016 Goodwill Core Intangible Goodwill Core Deposit Intangible Beginning balance $ 51,975 $ 19,776 $ 25,688 $ 22,275 Amortization or accretion — (2,293 ) — (2,228 ) Ending balance $ 51,975 $ 17,483 $ 25,688 $ 20,047 Accumulated amortization or accretion N/A $ 12,703 N/A $ 9,653 Weighted average remaining amortization or accretion period N/A 5.8 Years N/A 6.8 Years The Company had other intangible assets of $39,000 and $50,000 as of September 30, 2017 and December 31, 2016, respectively, related to trademark-related transactions. The following table presents the estimated amortization expense for core deposit intangible and other intangible assets recognized at September 30, 2017: Estimated Amortization 2017 $ 767 2018 3,060 2019 3,050 2020 3,027 2021 3,017 Thereafter 4,601 Total $ 17,522

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 10—Income The Company uses an estimated annual effective tax rate method in computing its interim tax provision. This effective tax rate is based on forecasted annual pre-tax income, permanent tax differences and statutory tax rates. The effective tax rates for the nine months ended September 30, 2017 and 2016 were 24.4% and (8.6)%, respectively. The Company began to recognize income tax expense in the quarter ended December 31, 2016 after the reversal of $61.9 million of the Company’s previously established valuation allowance on its net deferred tax assets. Deferred tax assets decreased $7.4 million from $67.8 million at December 31, 2016 to $60.4 million at September 30, 2017. This decrease was primarily due to a reduction in the Company’s net operation loss carryforwards being applied to the current year tax liability. As part of a budget package passed by the Legislature of the State of Illinois, the corporate income tax rate increased from 5.25% to 7.00% effective July 1, 2017. As a result of the increase in the corporate income tax rate, we recorded a state income tax benefit of $4.6 million due to increased value of our deferred tax asset related to our Illinois net loss deduction.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Deposits [Abstract]
Deposits	Note 11—Deposits The composition of deposits was as follows as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Non-interest bearing demand deposits $ 753,662 $ 724,457 Interest bearing checking accounts 187,232 173,929 Money market demand accounts 418,006 369,074 Other savings 435,536 446,418 Time deposits (below $100,000) 377,929 392,854 Time deposits ($100,000 and above) 348,564 383,662 Total deposits $ 2,520,929 $ 2,490,394 Time deposits of $100,000 or more included $30.8 million of brokered deposits at December 31, 2016 and none at September 30, 2017. Time deposits in denominations of $250,000 or more at September 30, 2017 and December 31, 2016 were $83.4 million and $117.4 million, respectively.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	9 Months Ended
	Sep. 30, 2017
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	Note 12—Federal The following September 30, December 31, 2017 2016 Federal Home Loan Bank advances $ 234,559 $ 313,715 Weighted average cost 1.32 % 0.73 % Scheduled Maturities 2017 $ 225,000 2018 9,559 Total $ 234,559 At September 30, 2017, advances had fixed terms December At September 30, 2017 and December 31, 2016, the Bank had additional borrowing capacity from the FHLB of $913.0 million and $647.9 million, respectively, subject to the availability of proper collateral. FHLB The Company hedges

Other Borrowings

Other Borrowings	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Other Borrowings	Note 13—Other Borrowings The following is a summary of the Company’s other borrowings as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Securities sold under agreements to repurchase $ 30,807 $ 17,249 Line of credit — 20,650 Total $ 30,807 $ 37,899 Securities On known as CIBC Bank USA (“CIBC”), R September 30, 2017 4.25 September 30, 2017 The following September 30, December 31, 2017 2016 Federal Reserve Bank of Chicago discount window line $ 135,278 $ 110,600 Available federal funds lines 40,000 20,000

Junior Subordinated Debentures

Junior Subordinated Debentures	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Junior Subordinated Debentures	Note 14—Junior Subordinated Debentures At September 30, 2017 and December 31, 2016, the Name of Trust Aggregate Principal Amount September 30, 2017 Aggregate Principal Amount December 31, 2016 Stated Maturity Contractual Rate at September 30, 2017 Interest Rate Spread Metropolitan $ 35,000 $ 35,000 March 4.11 % Three-month LIBOR + 2.79% RidgeStone Capital Trust I 1,500 1,500 June 30, 2033 5.09 % Five-year LIBOR + 3.50% Total liability, at par 36,500 36,500 Discount (9,018 ) (9,574 ) Total liability, at carrying value $ 27,482 $ 26,926 In 2004, the September 30, 2017 As part of the Ridgestone acquisition, the Company assumed the obligations to RidgeStone Capital Trust I of $1.5 million in principal amount, which was formed for the issuance of trust preferred securities. Refer to Note 3—Acquisition of a Business for additional information. Beginning on June 30, 2008, the interest rate reset to the five-year LIBOR plus 3.50% (5.09% at September 30, 2017 and December 31, 2016), which is in effect until September 30, 2018 and updated every five years. Interest is paid on a quarterly basis. The Company has the right to redeem the debentures, in whole or in part, on any interest payment date on or after June 30, 2008. There was no accrued interest payable as of September 30, 2017 or December 31, 2016. The Trusts

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 15—Commitments Legal —I n th e ordinar y cours e o f business , th e Compan y an d Ban k hav e various outstandin g commitment s an d contingen t liabilitie s tha t ar e no t recognize d i n th e accompanyin g consolidated financia l statements . I n addition , th e Compan y ma y b e a defendan t i n certai n claim s an d lega l action s arisin g i n the ordinar y cours e o f business . I n th e opinio n o f management , afte r consultatio n wit h lega l counsel , th e ultimate dispositio n o f thes e matter s i s currentl y no t expecte d t o hav e a materia l advers e effec t o n th e Company’s Consolidated Statements of Financial Condition. Operating s —The Company has entered into various operating lease agreements primarily for facilities and land on which banking facilities are located. Certain lease agreements have renewal options at the end of the original lease term and certain lease agreements have escalation clauses in the rent payments. The minimum Minimum Commitments 2017 $ 754 2018 2,849 2019 2,506 2020 2,006 2021 1,759 Thereafter 3,025 Total $ 12,899 The Company’s Rental expenses for the three months ended September 30, 2017 and 2016 were $1.1 million and $950,000, respectively. C Commitments t —The Bank is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Statements of Financial Condition. The contractual or notional amounts of those instruments reflect the extent of involvement the Bank has in particular classes of financial instruments. The Bank’s exposure The following September 30, 2017 and December 31, 2016 September 30, December 31, 2017 2016 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit $ 46,427 $ 425,115 $ 37,731 $ 332,928 Standby letters of credit 1,050 3,655 1,060 4,135 Total $ 47,477 $ 428,770 $ 38,791 $ 337,063 Commitments Standby letters Commitments

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 16—Fair Value Measurement Fair These types Level 1 —Quoted prices in active markets for identical assets or liabilities. Level 2 —Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations whose inputs are observable or whose significant value drivers are observable. Level 3 —Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available. The Company’s own data used to develop unobservable inputs may be adjusted for market considerations when reasonably available. A financial The Company used the Securities e —The Company obtains fair value measurements from an independent pricing service. Management reviews the procedures used by the third party, including significant inputs used in the fair value calculations. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. When market quotes are not readily accessible or available, alternative approaches are utilized, such as matrix or model pricing. The Company’s Servicing s —Fair value is based on a loan-by-loan basis taking into consideration the original term to maturity, the current age of the loan and the remaining term to maturity. The valuation methodology utilized for the servicing assets begins with generating future cash flows for each servicing asset, based on their unique characteristics and market-based assumptions for prepayment speeds. The present value of the future cash flows are then calculated utilizing market-based discount rate assumptions. Derivative s —Interest rate swaps are valued by a third party, using models that primarily use market observable inputs, such as yield curves, and are validated by comparison with valuations provided by the respective counterparties. Derivative financial instruments are included in other assets and other liabilities in the Consolidated Statements of Financial Condition. The following Fair Value Measurements Using September 30, 2017 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 14,925 $ 14,925 $ — $ — U.S. Government agencies 53,219 — 53,219 — Obligations of states, municipalities, and political subdivisions 32,535 — 31,985 550 Mortgage-backed securities; residential Agency 324,040 — 324,040 — Non-Agency 25,470 — 25,470 — Mortgage-backed securities; commercial Agency 70,757 — 70,757 — Non-Agency 31,257 — 31,257 — Corporate securities 27,524 — 27,524 — Other securities 4,957 1,938 2,480 539 Servicing assets 21,669 — — 21,669 Derivative assets 3,913 — 3,913 — Financial liabilities Derivative liabilities 1,190 — 1,190 — Fair Value Measurements Using December 31, 2016 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 14,920 $ 14,920 $ — $ — U.S. Government agencies 58,857 — 58,857 — Obligations of states, municipalities, and political subdivisions 16,059 — 15,509 550 Mortgage-backed securities; residential Agency 368,160 — 368,160 — Non-Agency 19,933 — 19,933 — Mortgage-backed securities; commercial Agency 77,403 — 77,403 — Non-Agency 31,052 — 31,052 — Corporate securities 17,329 — 17,329 — Other securities 4,847 1,938 2,379 530 Servicing assets 21,091 — — 21,091 Derivative assets 4,317 — 4,317 — Financial liabilities Derivative liabilities 559 — 559 — During 2016, the In addition, area The Company did not have any transfers nine months ended September 30, 2017 and The following table presents additional information about financial assets measured at fair value on recurring basis for which the Company used significant unobservable inputs (Level 3): Nine Months Ended September 30, 2017 2016 2017 2016 Investment Securities Servicing Assets Balance, beginning of period $ 1,080 $ — $ 21,091 $ — Additions, net — — 4,675 — Amortization 3 — — — Change in unrealized loss 6 — — — Change in fair value — — (4,097 ) — Balance, end of period $ 1,089 $ — $ 21,669 $ — The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Range Impact to Valuation from an Increased or Higher Input Value Obligations of states, municipalities, and political obligations Discounted Probability of default 2.0%—2.4% 2.2 % Decrease Single issuer trust preferred Discounted cash flow Probability of default 7.5%—9.9% 8.9 % Decrease Servicing assets Discounted cash flow Prepayment speeds 1.7%—9.0% 7.6 % Decrease Discount rate 9.1%—16.2% 12.8 % Decrease Expected weighted average loan life 0.4—11.5 years 6.1 years Increase The Company used the Impaired ) —Impaired loans, other than those existing on the date of a business acquisition, are primarily carried at the fair value of the underlying collateral, less estimated costs to sell, if the loan is collateral dependent. Valuations of impaired loans that are collateral dependent are supported by third party appraisals in accordance with the Bank’s credit policy. Impaired loans that are not collateral dependent are not material. Assets e —Assets held for sale consist of former branch locations, vacant land, and a house previously purchased for expansion. Assets are considered held for sale when management has approved to sell the assets following a branch closure or other events. The properties are being actively marketed and transferred to assets held for sale based on the lower of carrying value or its fair value, less estimated costs to sell. Other d —Certain assets held within other real estate owned represent real estate or other collateral that has been adjusted to its estimated fair value, less cost to sell, as a result of transferring from the loan portfolio at the time of foreclosure or repossession and based on management’s periodic impairment evaluation. From time to time, non-recurring fair value adjustments to other real estate owned are recorded to reflect partial write-downs based on an observable market price or current appraised value of property. Adjustments Fair Value Measurements Using September 30, 2017 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 13,742 $ — $ — $ 13,742 Residential real estate 1,772 — — 1,772 Construction, land development, and other land 565 — — 565 Commercial and industrial 4,490 — — 4,490 Installment and other - — — - Assets held for sale 12,938 — — 12,938 Other real estate owned 13,859 — — 13,859 Fair Value Measurements Using December 31, 2016 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 8,916 $ — $ — $ 8,916 Residential real estate 1,007 — — 1,007 Construction, land development, and other land — — — — Commercial and industrial 986 — — 986 Installment and other — — — — Assets held for sale 14,748 — — 14,748 Other real estate owned 16,570 — — 16,570 The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Impact to Valuation from an Increased or Higher Input Value Impaired loans (excluding acquired impaired loans) Appraisals Appraisal adjustments, sales costs and other discount adjustments for market conditions 6% - 10% Decrease Assets held for sale List price, contract price Sales costs and other discount adjustments for market conditions 7% Decrease Other real estate owned Appraisals Appraisal adjustments, sales costs and other discount adjustments for market conditions 7% - 20% Decrease The following Cash and cash equivalent s —For these short-term instruments, the carrying amount is a reasonable estimate of fair value. The fair value for time certificates with other banks is based on the market values for comparable investments. Securities y —The Company obtains fair value measurements from an independent pricing service. Management reviews the procedures used by the third party, including significant inputs used in the fair value calculations. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. When market quotes are not readily accessible or available, alternative approaches are utilized, such as matrix or model pricing. Restricted k —The fair value has been determined to approximate cost. Loans held for — The fair value of loans held for sale are based on quoted market prices, where available, and determined by discounted estimated cash flows using interest rates approximating the Company’s current origination rates for similar loans adjusted to reflect the inherent credit risk. Loan —For certain variable rate loans that reprice frequently and with no significant changes in credit risk, fair value is estimated at carrying value. The fair value of other types of loans is estimated by discounting future cash flows, using current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. Deposit s —The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated by discounting future cash flows, using rates currently offered for deposits of similar remaining maturities. Federal —The fair value of FHLB advances is estimated by discounting the agreements based on maturities using rates currently offered for FHLB advances of similar remaining maturities adjusted for prepayment penalties that would be incurred if the borrowings were paid off on the measurement date. Securities e —The carrying amount approximates fair value due to maturities of less than ninety days. Junior subordinated debenture s —The fair value of junior subordinated debentures, in the form of trust preferred securities, is determined using rates currently available to the Company for debt with similar terms and remaining maturities. Accrued interest —The carrying amount approximates fair value. Commitments t —The fair values of these off-balance sheet commitments to extend credit and commercial and standby letters of credit are not considered practicable to estimate because of the lack of quoted market prices and the inability to estimate fair value without incurring excessive costs. The estimated September 30, December 31, Fair Value 2017 2016 Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets Cash and due from banks 1 $ 16,193 $ 16,193 $ 17,735 $ 17,735 Interest bearing deposits with other banks 2 46,043 46,043 28,798 28,798 Securities held-to-maturity 2 121,453 122,266 138,846 138,082 Other restricted stock 2 10,628 10,628 14,993 14,993 Loans held for sale 3 2,087 2,335 23,976 26,487 Loans and lease receivables, net 3 2,200,519 2,118,769 2,137,088 2,068,157 Accrued interest receivable 3 7,183 7,183 6,866 6,866 Financial liabilities Non-interest bearing deposits 2 753,662 753,662 724,457 724,457 Interest bearing deposits 2 1,767,267 1,721,537 1,765,937 1,723,941 Accrued interest payable 2 1,184 1,184 2,427 2,427 Line of credit 2 - - 20,650 20,650 Federal Home Loan Bank advances 2 234,559 234,543 313,715 313,646 Securities sold under repurchase agreement 2 30,807 30,807 17,249 17,249 Junior subordinated debentures 3 27,482 26,779 26,926 26,943

Derivative Instruments and Hedg

Derivative Instruments and Hedge Activities	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedge Activities	Note 17—Derivative Instruments and Hedge Activities The Company recognizes derivative financial instruments at fair value regardless of the purpose or intent for holding the instrument. The Company records derivative assets and derivative liabilities on the Consolidated Statements of Financial Condition within accrued interest receivable and other assets and accrued interest payable and other liabilities, respectively. The following tables present the fair value of the Company’s derivative financial instruments and classification on the Consolidated Statements of Financial Condition as of September 30, 2017 and December 31, 2016: September 30, 2017 December 31, 2016 Fair Value Fair Value Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments Interest rate swaps designated as cash flow hedges $ 250,000 $ 3,265 $ 545 $ 100,000 $ 3,719 $ — Derivatives not designated as hedging instruments Other interest rate swaps 81,712 648 645 51,213 598 559 Total derivatives $ 331,712 $ 3,913 $ 1,190 $ 151,213 $ 4,317 $ 559 Interest rate swaps designated as cash flow hedges —Cash flow hedges of interest payments associated with certain FHLB advances had notional amounts totaling $250.0 million as of September 30, 2017. The aggregate fair value of the swaps is recorded in other assets or other liabilities with changes in fair value recorded in other comprehensive income (loss), net of taxes, to the extent effective. The amount included in accumulated other comprehensive income (loss) would be reclassified to current earnings when the hedged FHLB advances affect earnings. The Company assesses the effectiveness of each hedging relationship by comparing the changes in fair value of the derivative hedging instrument with the changes in fair value of the designated hedged transactions. The Company expects the hedges to remain highly effective during the remaining terms of the swaps and did not recognize any hedge ineffectiveness in current earnings during the three or nine months ended September 30, 2017 and 2016. Interest expense recorded on these swap transactions totaled $159,000 and $426,000 during the three and nine months ended September 30, 2017, respectively, and is reported as a component of interest expense on FHLB advances. Interest expense recorded on swap transactions totaled $4,000 during the three and nine months ended September 30, 2016. At September 30, 2017, the Company estimates $249,000 of the unrealized gain to be reclassified as an increase to interest expense during the next twelve months. The following table reflects the net gains (losses) recorded in accumulated other comprehensive income (loss) and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the nine months ended September 30, 2017. Amount of Gain Recognized in OCI (Effective Portion) Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion) Interest rate swaps $ (1,408 ) $ (426 ) $ — Other interest rate swaps —The total combined notional amount was $81.7 million with maturities ranged from January 2020 to August 2027. The fair values of the interest rate swap agreements are reflected in other assets and other liabilities with corresponding gains or losses reflected in non-interest income. During the three and nine months ended September 30, 2017, transaction fees related to these derivative instruments were $40,000 and $219,000, respectively. During the three and nine months ended September 30, 2016, transaction fees were $191,000 and $580,000, respectively. The following table reflects other interest rate swaps as of September 30, 2017: Notional amounts $ 81,712 Derivative assets fair value 648 Derivative liabilities fair value 645 Weighted average pay rates 4.26 % Weighted average receive rates 3.68 % Weighted average maturity 6.1 years Credit risk —Derivative instruments are inherently subject to market risk and credit risk. Market risk is associated with changes in interest rates and credit risk relates to the Company’s risk of loss when the counterparty to a derivative contract fails to perform according to the terms of the agreement. Market and credit risks are managed and monitored as part of the Company’s overall asset-liability management process. The credit risk related to derivatives entered into with certain qualified borrowers is managed through the Company’s loan underwriting process. The Company’s loan underwriting process also approves the Bank’s swap counterparty used to mirror the borrowers’ swap. The Company has a bilateral agreement with each swap counterparty that provides that fluctuations in derivative values are to be fully collateralized with either cash or securities. The credit valuation adjustment (“CVA”) is a fair value adjustment to the derivative to account for this risk. During the three and nine months ended September 30, 2017, the CVA resulted in a decrease to non-interest income of $6,000 and $36,000, respectively. During the three and nine months ended September 30, 2016, the CVA resulted in a decrease to non-interest income of $14,000 and $51,000, respectively. The Company has agreements with its derivative counterparties that contain a cross-default provision under which if the Company defaults on any of its indebtedness, 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 derivative counterparties that contain a provision where if the Company fails to maintain its status as a well or adequately capitalized institution, then the counterparty could terminate the derivative positions and the Company would be required to settle its obligations resulted in a net asset position. The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative asset and liabilities on the Consolidated Statements of Financial Condition. The table below summarizes the Company’s interest rate derivatives and offsetting positions as of September 30, 2017: Derivative Assets Fair Value Derivative Liabilities Fair Value Gross amounts recognized $ 3,913 $ 1,190 Less: Amounts offset in the Consolidated Statements of Financial Condition — — Net amount presented in the Consolidated Statements of Financial Condition $ 3,913 $ 1,190 Gross amounts not offset in the Consolidated Statements of Financial Condition Offsetting derivative positions (677 ) (677 ) Collateral posted (2,949 ) (502 ) Net credit exposure $ 287 $ 11

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	Note 18 – Share-Based Compensation In June 2017, the Company adopted the 2017 Omnibus Incentive Compensation Plan (the “Omnibus Plan”) in connection with our initial public offering (“IPO”). The Omnibus Plan provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, dividend equivalent rights and other equity-based, equity-related or cash-based awards. A total of 1,550,000 shares of our common stock have been reserved and are available for issuance under the Omnibus Plan. On July 6, 2017, in conjunction with the completion of the IPO, the Company granted 58,900 restricted shares of the Company’s voting common stock, par value of $0.01 per share, to certain key employees, pursuant to the Omnibus Plan. The restricted shares will cliff vest on the third anniversary of the grant date, subject to continued employment. Subsequent to the grant date, 400 restricted shares were forfeited. As of September 30, 2017, there were 1,491,500 shares available for future grants under the Omnibus Plan. The following table discloses the changes in restricted shares for the nine months ended September 30, 2017: Omnibus Plan Number of Shares Weighted Average Grant Date Fair Value Beginning balance — $ — Granted 58,900 $ 20.18 Vested — $ — Forfeited (400 ) $ 20.18 Ending balance outstanding at September 30, 2017 58,500 $ 20.18 No restricted shares vested during the nine months ended September 30, 2017. The Company recognizes share-based compensation based on the estimated fair value of the restricted stock at the grant date. Share-based compensation expense is included in non-interest expense in the Consolidated Statements of Operations. No restricted shares were outstanding in 2016. The following table summarizes restricted stock compensation expense for the nine months ended September 30, 2017: Nine Months Ended September 30, 2017 Total share-based compensation - restricted stock $ 94 Income tax benefit 38 Unrecognized compensation expense 1,087 Weighted-average amortization period remaining 2.8 years In October 2017, the Company granted 7,500 restricted shares of the Company’s voting common stock, par value $0.01 per share, under the Omnibus Plan. These restricted shares will vest ratably over four years on each anniversary of the grant date, subject to continued employment. The Company maintained a nonqualified, share-based, stock option plan adopted prior to recapitalization (“MBG Plan”). There were no options granted or exercised under this plan during the year ended December 31, 2016 or for the nine months ended September 30, 2017. At the time of the Company’s reincorporation in Delaware, in June 2017, the Board of Directors cancelled the MBG Plan and all outstanding options were cancelled. In October 2014, the Company adopted the Byline Bancorp, Inc. Equity Incentive Plan (“BYB Plan”). The maximum number of shares available for grants under this Plan was 2,476,122 shares. During 2016 and 2015, the Company granted options to purchase 212,400 and 1,634,568 shares, respectively, under this plan. The Company did not grant any stock options during the nine months ended September 30, 2017. In June 2017, the Board of Directors terminated the BYB Plan and no future grants can be made under this plan. Options to purchase a total of 1,798,220 shares remain outstanding under the BYB Plan. The types of stock options granted under the BYB Plan were Time Options and Performance Options. The exercise price of each option is equal to the fair value of the stock as of the date of grant. These option awards have vesting periods ranging from 1 to 5 years and have 10-year contractual terms. Stock volatility was computed as the average of the volatilities of peer group companies. The vesting of Time Options is conditional based on completion of service. Performance Options have conditional vesting based on either performance targets or market performance. Certain Performance Options’ performance goals will be satisfied (in whole or in part) if the Bank achieves various performance targets such as profitability, asset quality, and conditional based on market performance, as outlined in the BYB Plan. Each of the performance goals identified are measured for achievement (or failure to achieve) independent of each other. In October 2017, the Board of Directors determined that the Performance Option goals were satisfied, in whole, and these Performance Options converted to Time Options. As a result of the previous completion of service, 414,894 performance options vested on October 3, 2017. The fair values of the stock options were determined using the Black-Scholes-Merton model for Time Options and a Monte Carlo simulation model for Performance Options. The fair values of options under the BYB Plan were determined using the following assumptions as of the grant dates: Time Options Grants 2016 2015 Risk-free interest rate 1.34% - 1.40% 1.68% - 1.85% Expected term (years) 5.2 - 5.6 5.7 - 6.3 Expected stock price volatility 20.39 % 16.18%-16.55% Expected dividend yield 0.00 % 0.00 % Weighted average grant date fair value $ 3.55 $ 2.25 Performance Options Grants 2016 2015 Risk-free interest rate Implied forward rates Implied forward rates Expected term (years) Variable Variable Expected stock price volatility 20.34% - 20.39% 16.18%-16.55% Expected dividend yield 0.00 % 0.00 % Weighted average grant date fair value $ 3.75 $ 1.65 The following table discloses the activity in shares subject to options and the weighted average exercise prices, in actual dollars, for the nine months ended September 30, 2017: BYB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance 1,798,220 $ 11.95 $ 15,788 9.8 Granted — Expired — Exercised — Forfeited — Ending balance outstanding at September 30, 2017 1,798,220 $ 11.95 $ 16,545 7.9 Exercisable at September 30, 2017 835,263 $ 11.31 $ 8,310 7.7 There were no stock options exercised during the nine months ended September 30, 2017. The total fair value of stock options vested during the nine months ended September 30, 2017 was $477,000. The Company recognizes share-based compensation based on the estimated fair value of the option at the grant date. Forfeitures are estimated based upon industry standards. Share-based compensation expense is included in non-interest expense in the Consolidated Statements of Operations. The following table summarizes stock option compensation expense for the nine months ended September 30, 2017 and 2016: Nine Months Ended September 30, 2017 2016 Total share-based compensation – stock options $ 857 $ 553 Income tax benefit 348 — Unrecognized compensation expense 1,074 1,431 Weighted-average amortization period remaining 1.2 years 2.0 years

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per Share	Note 19—Earnings per Share A reconciliation of the numerators and denominators for earnings per common share computations is presented below. Incremental shares represent outstanding stock options for which the exercise price is less than the average market price of the Company’s common stock during the periods presented. Options to purchase 1,798,223 shares of common stock were outstanding as of September 30, 2017 and 2016. There were 58,500 restricted stock awards outstanding at September 30, 2017. There were no restricted stock awards outstanding at September 30, 2016. The following represent the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net income $ 9,755 $ 1,565 $ 22,461 $ 2,814 Less: Dividends on preferred shares 195 — 11,081 — Net income available to common stockholders $ 9,560 $ 1,565 $ 11,380 $ 2,814 Weighted-average common stock outstanding: Weighted-average common stock outstanding (basic) 29,246,900 19,497,811 26,194,025 18,838,354 Incremental shares 505,431 265,623 503,816 265,623 Weighted-average common stock outstanding (dilutive) 29,752,331 19,763,434 26,697,841 19,103,977 Basic earnings per common share $ 0.33 $ 0.08 $ 0.43 $ 0.15 Diluted earnings per common share $ 0.32 $ 0.08 $ 0.43 $ 0.15

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity	Note 20—Stockholders’ Equity A summary of the Company’s preferred and common stock at September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, 2017 2016 Series A non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 15,003 15,003 Shares issued — 15,003 Shares outstanding — 15,003 Series B 7.5% fixed non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 50,000 50,000 Shares issued 10,438 9,388 Subscription receivable — 1,050 Shares outstanding 10,438 9,388 Common stock, voting Par value $ 0.01 $ — Shares authorized 150,000,000 150,000,000 Shares issued 29,305,400 24,616,706 Shares outstanding 29,305,400 24,616,706 During 2016, the Company authorized and issued Series B 7.50% fixed-to-floating non-voting, noncumulative perpetual preferred stock with a liquidation preference of $1,000 per share, plus the amount of unpaid dividends, if any, which is redeemable at the Company’s option on or after March 31, 2022. Holders of either Series A or Series B preferred stock do not have any rights to convert such stock into shares of any other class of capital stock of the Company. On January 30, 2017, the Company issued an additional 1,050 shares of Series B preferred stock, which is reflected as a subscription receivable as of December 31, 2016. For the nine months ended September 30, 2017, the Company declared and paid dividends on the Series B preferred stock of $580,000. On May 31, 2017, the Company filed a registration statement on Form S-1with the SEC in connection with its initial public offering (the ”Registration Statement”), which was subsequently amended on June 19, 2017. The Registration Statement was declared effective by the SEC on June 29, 2017. In connection with the IPO, the Company issued 4,630,194 shares of common stock, par value $0.01 per share, which included 855,000 shares sold pursuant to the underwriters’ exercise of their option to purchase additional shares. The securities were sold at a price to the public of $19.00 per share and began trading on the New York Stock Exchange on June 30, 2017. On July 6, 2017, the closing date of the IPO, the Company received net proceeds of $82.7 million. On June 14, 2017, the Company’s stockholders approved the reincorporation of the Company to a Delaware corporation. Under the terms of the merger agreement, the Company reincorporated from Illinois to Delaware by merging with and into Byline Bancorp, Inc. Delaware (“Byline Delaware”), with Byline Delaware surviving (such transaction, the “Merger”). Each share of Company common stock issued and outstanding immediately prior to the effective time of the Merger, was converted automatically into the right to receive one fifth (0.20) of a share of common stock of Byline Delaware. There were no fractional shares issued in connection with the Merger. The reincorporation and share conversion are retrospectively reflected in the consolidated financial statements. On June 16, 2017, after obtaining the necessary approval from the Federal Reserve, the Board of Directors of Byline Delaware unanimously approved the repurchase of all of the Company’s outstanding Series A preferred stock at a purchase price per share representing a liquidation value of $1,000 per share, equal to the cash value of (i) 89.469 shares of the Company’s common stock, multiplied by (ii) the initial public offering price of the common stock of $19.00 per share. On July 14, 2017, the Company completed the repurchase of all of the Series A Preferred Stock for $25.5 million. The $10.5 million excess of the purchase price over the carrying value of the Series A was recorded as a dividend.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	These unaudited interim condensed consolidated financial statements include the accounts of Byline Illinois state chartered These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). In preparing these financial statements, the Company has evaluated events and transactions subsequent to September 30, 2017 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information in footnote disclosures normally included in financial statements prepared in accordance with GAAP has been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Consolidated Financial Statements for the years ended December 31, 2016 and 2015. In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 855, “Subsequent Events,” the Company’s management has evaluated subsequent events for potential recognition or disclosure through the date of the issuance of these consolidated financial statements. No subsequent events were identified that would have required a change to the consolidated financial statements or disclosure in the notes to the consolidated financial statements. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity.
Recently Issued Accounting Pronouncements	The following reflect recent accounting pronouncements that have been adopted or are pending adoption by the Company. As the Company qualifies as an emerging growth company and has elected the extended transition period for complying with new or revised accounting pronouncements, it is not subject to new or revised accounting standards applicable to public companies during the extended transition period. The accounting pronouncements pending adoption below reflect effective dates for the Company as an emerging growth company with the extended transition period. Revenue from Contracts with Customers In May 2014, FASB issued Accounting Standards Update (“ASU”) No. 2014-09, deferred by ASU No. 2015-14 and clarifying standards, Revenue from Contracts with Customers , which creates Topic 606 and supersedes Topic 605, Revenue Recognition . The core principle of Topic 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In general, the new guidance requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Under the terms of ASU No. 2015-14 the standard is effective for interim and annual periods beginning after December 15, 2017. Early application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. The Company is currently evaluating the provisions of ASU No. 2014-09 to determine the potential impact the standard will have on the Company’s Consolidated Financial Statements. As a financial institution, the Company’s largest component of revenue, interest income, is excluded from the scope of this ASU. The Company is currently evaluating which, if any, of its sources of non-interest income will be impacted by this ASU. Assuming the Company remains an emerging growth company, the Company expects to adopt this new guidance on January 1, 2019, with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be significant. In April 2016, FASB issued ASU No. 2016-10, Identifying Performance Obligations and Licensing . The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the following two aspects of Topic 606: (1) identifying performance obligations and (2) licensing implementation guidance, while retaining the related principles for those areas. The amendments in this ASU affect the guidance in ASU 2014-09, discussed above, which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606, Revenues from Contracts with Customers . The Company is evaluating the provisions of this ASU in conjunction with ASU No. 2014-09 to determine the potential impact Topic 606 and its amendments will have on the Company’s Consolidated Financial Statements. In May 2016, FASB issued ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients Revenue from Contracts with Customers Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities . The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. The amendments simplify the impairment assessment of equity investments without readily determinable fair values. The amendments also eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This amendment excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or in the accompanying notes to the financial statements. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the provisions of ASU No. 2016-01 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods beginning January 1, 2019 and is not expected to have a significant impact on the Company’s Consolidated Financial Statements. Leases (Topic 842) In February 2016, FASB issued ASU No. 2016-02, Leases . The amendments in this ASU require lessees to recognize the following for all leases (with the exception of short-term) at the commencement date; a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. The amendments in this ASU leave lessor accounting largely unchanged, although certain targeted improvements were made to align lessor accounting with the lessee accounting model. This ASU simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2020. The Company expects an increase in assets and liabilities as a result of recognizing additional lease contracts where the Company is lessee. Derivatives and Hedging (Topic 815) In March 2016, FASB issued ASU No. 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships . The amendments in this ASU clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 (Derivatives and Hedging) does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The amendments in this ASU are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity has an option to apply the amendments in this ASU on either a prospective basis or a modified retrospective basis. Early adoption is permitted, including adoption in an interim period. This ASU became effective for the Company on January 1, 2017 and did not have a material impact on the Company’s Consolidated Financial Statements. In March 2016, FASB issued ASU No. 2016-06, Contingent Put and Call Options in Debt Instruments In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities Compensation—Stock Compensation (Topic 718) In March 2016, FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting . FASB issued this ASU as part of its Simplification Initiative. The areas for simplification in this ASU involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Amendments in this ASU relate to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures, and intrinsic value should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments in this ASU require recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term should be applied prospectively. An entity may elect to apply the amendments in this ASU related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. This ASU became effective for the Company on January 1, 2017 and did not have a material impact on the Company’s Consolidated Financial Statements. In May 2017, the FASB issued ASU 2017-09, Scope of Modification Accounting Financial Instruments—Credit Losses (Topic 326) In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. The amendments in this ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2021. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements. While the Company has not quantified the impact of this ASU, it does expect changing from the current incurred loss model to an expected loss model will result in an earlier recognition of losses. Statement of Cash Flows (Topic 230) In August 2016, FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments . There is diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230 and other Topics. This ASU addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. Those eight issues are (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principle. Current GAAP either is unclear or does not include specific guidance on these eight cash flow classification issues. These amendments provide guidance for each of the eight issues, thereby reducing current and potential future diversity in practice. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company is currently evaluating the provisions of ASU No. 2016-15 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (230), Restricted Cash Income Taxes (Topic 740) In October 2016, the FASB issued ASU No. 2016-16, Income Taxes, Intra-Entity Transfers of Assets Other Than Inventory . The ASU was issued to improve the accounting for income tax consequences of intra-entity transfers of assets other than inventory. Current GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party; this update clarifies that an entity should recognize the income tax consequences of an intra-entity transfer of assets other than inventory when the transfer occurs. The amendment is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption of the update is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company does not expect this ASU to have a material impact on the Company’s Consolidated Financial Statements. Consolidation (Topic 810) In October 2016, the FASB issued ASU No. 2016-17, Consolidation , Interests Held through Related Parties That Are under Common Control. The ASU was issued to amend the consolidation guidance on how a reporting entity that is the single decision maker of a variable interest entity (“VIE”) should treat indirect interests in the entity held through related parties that are under common control with the reporting entity when determining whether it is the primary beneficiary of that VIE. The primary beneficiary of a VIE is the reporting entity that has a controlling financial interest in a VIE and, therefore, consolidates the VIE. A reporting entity has an indirect interest in a VIE if it has a direct interest in a related party that, in turn, has a direct interest in the VIE. The amendment is effective for annual reporting periods beginning after December 15, 2016, and interim periods within those fiscal years. Early adoption of the update is permitted. The Company adopted this new authoritative guidance on January 1, 2017 and it did not have an impact on the Company’s Consolidated Financial Statements. Business Combinations (Topic 805) In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business . The guidance clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. This guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2019. The Company does not expect a material impact of this ASU on the Company’s Consolidated Financial Statements. Intangibles—Goodwill and Other (Topic 350) In January 2017, FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment . The amendments in this ASU are intended to reduce the cost and complexity of the goodwill impairment test by eliminating step two from the impairment test. The amendments modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. Under the amendments in this ASU, an entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. An impairment charge should be recognized for the amount which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The amendments in this ASU are effective for the Company’s annual or any interim goodwill impairment test in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is early adopting these amendments in 2017 and does not expect a material impact on the Company’s Consolidated Financial Statements. Other Income (Subtopic 610-20) In February 2017, the FASB issued ASU No. 2017-05, Other Income-Gains and Losses from the Derecognition of Nonfinancial Assets . This ASU will clarify the scope of Subtopic 610-20 and add guidance for partial sales of nonfinancial assets. The amendments should be applied either on retrospectively to each period presented or with a modified retrospective approach. The amendment is effective for annual periods beginning after December 15, 2018, and interim periods within annual periods beginning after December 15, 2019. The Company is currently evaluating the provisions of ASU No. 2017-05 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Nonrefundable Fees and Other Costs (Subtopic 310-20) In March 2017, FASB issued ASU No. 2017-08, Receivables—Nonrefundable Fees and Other Costs. The amendments in the ASU shorten the amortization period for certain callable debt securities held at a premium at the earliest call date. Under current GAAP, the Company amortizes the premium as an adjustment of yield over the contractual life of the instrument. As a result, upon exercise of a call on a callable debt security held at a premium, the unamortized premium is charged to earnings. The ASU shortens the amortization period for certain callable debt securities held at a premium and requires the premium to be amortized to the earliest call date. However, the amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments are effective for annual periods beginning after December 15, 2019, and interim periods within annual periods beginning after December 15, 2020. Early adoption is permitted. The Company is required to apply the amendments on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2020. The Company is currently evaluating the provisions of ASU No. 2017-08 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Acquisition of a Business (Tabl

Acquisition of a Business (Tables)	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Summary of Estimates of fair Values of Assets and Liabilities Assumed as of Acquisition Date	The following table presents a summary of the estimates of fair values of assets acquired and liabilities assumed as of the acquisition date: Assets Cash and cash equivalents $ 25,480 Securities available-for-sale 27,662 Restricted stock 931 Loans held for sale 15,363 Loans 351,820 Servicing assets 20,295 Premises and equipment 2,011 Other real estate owned 1,525 Other intangible assets 486 Bank-owned life insurance 2,352 Other assets 8,228 Total assets acquired 456,153 Liabilities Deposits 361,370 Federal Home Loan Bank advances 9,773 Junior subordinated debentures 1,339 Accrued expenses and other liabilities 4,958 Total liabilities assumed 377,440 Net assets acquired $ 78,713 Consideration paid Common stock (4,199,791 shares issued at $16.25 per share) 68,247 Cash paid 36,753 Total consideration paid 105,000 Goodwill $ 26,287
Summary of Acquired Non-Impaired Loans as of Acquisition Date	The following table presents the acquired non-impaired loans as of the acquisition date: Fair value $ 312,166 Gross contractual amounts receivable 450,292 Estimate of contractual cash flows not expected to be collected (1) 19,661 Estimate of contractual cash flows expected to be collected 430,631 (1) Includes interest payments not expected to be collected due to loan prepayments as well as principal and interest payments not expected to be collected due to customer default.
Summary of Pro Forma Information for Results of Operations	The following table provides the pro forma information for the results of operations for the three and nine months ended September 30, 2016, as if the acquisition had occurred on January 1, 2016. The pro forma results combine the historical results of Ridgestone into the Company’s Consolidated Statements of Operations, including the impact of certain acquisition accounting adjustments, which includes loan discount accretion, intangible assets amortization, deposit premium accretion and borrowing net discount amortization. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2016. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, provision for credit losses, expense efficiencies or asset dispositions. The acquisition-related expenses that have been recognized are included in net income in the following table. Three Months Ended Nine Months Ended September 30, 2016 September 30, 2016 Total revenues (net interest income and non-interest income) $ 44,595 $ 130,536 Net income (loss) $ 6,816 $ 17,603 Earnings per share—basic $ 0.29 $ 0.76 Earnings per share—diluted $ 0.28 $ 0.76

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Fair Values of Securities Available-for-sale and Held to Maturity	The following September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 14,998 $ — $ (73 ) $ 14,925 U.S. Government agencies 54,231 — (1,012 ) 53,219 Obligations of states, municipalities, and political subdivisions 32,619 129 (213 ) 32,535 Residential mortgage-backed securities Agency 329,782 7 (5,749 ) 324,040 Non-agency 25,429 87 (46 ) 25,470 Commercial mortgage-backed securities Agency 72,190 44 (1,477 ) 70,757 Non-agency 31,838 — (581 ) 31,257 Corporate securities 27,093 493 (62 ) 27,524 Other securities 3,626 1,387 (56 ) 4,957 Total $ 591,806 $ 2,147 $ (9,269 ) $ 584,684 September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 24,078 $ 317 $ (36 ) $ 24,359 Residential mortgage-backed securities Agency 56,453 275 (82 ) 56,646 Non-agency 40,922 364 (25 ) 41,261 Total $ 121,453 $ 956 $ (143 ) $ 122,266 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 14,995 $ 4 $ (79 ) $ 14,920 U.S. Government agencies 60,180 — (1,323 ) 58,857 Obligations of states, municipalities, and political subdivisions 16,271 60 (272 ) 16,059 Residential mortgage-backed securities Agency 376,800 — (8,640 ) 368,160 Non-agency 20,107 — (174 ) 19,933 Commercial mortgage-backed securities Agency 78,954 — (1,551 ) 77,403 Non-agency 32,061 — (1,009 ) 31,052 Corporate securities 17,065 350 (86 ) 17,329 Other securities 4,161 742 (56 ) 4,847 Total $ 620,594 $ 1,156 $ (13,190 ) $ 608,560 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 24,878 $ 105 $ (229 ) $ 24,754 Residential mortgage-backed securities Agency 67,692 35 (283 ) 67,444 Non-agency 46,276 50 (442 ) 45,884 Total $ 138,846 $ 190 $ (954 ) $ 138,082
Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale and Held to Maturity	Gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2017 and December 31, 2016 are summarized as follows: Less than 12 Months 12 Months or Longer Total September 30, 2017 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Treasury Notes 5 $ 14,925 $ (73 ) $ — $ — $ 14,925 $ (73 ) U.S. Government agencies 9 28,418 (438 ) 24,801 (574 ) 53,219 (1,012 ) Obligations of states, municipalities and political subdivisions 23 14,431 (122 ) 2,082 (91 ) 16,513 (213 ) Residential mortgage-backed securities Agency 40 222,548 (3,356 ) 93,293 (2,393 ) 315,841 (5,749 ) Non-agency 1 4,789 (46 ) — — 4,789 (46 ) Commercial mortgage-backed securities Agency 7 39,378 (1,108 ) 19,740 (369 ) 59,118 (1,477 ) Non-agency 5 31,257 (581 ) — — 31,257 (581 ) Corporate securities 3 4,959 (62 ) — — 4,959 (62 ) Other securities 1 — — 1,938 (56 ) 1,938 (56 ) Total 94 $ 360,705 $ (5,786 ) $ 141,854 $ (3,483 ) $ 502,559 $ (9,269 ) Less than 12 Months 12 Months or Longer Total September 30, 2017 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Held-to-maturity Obligations of states, municipalities, and political subdivisions 7 $ 4,855 $ (36 ) $ — $ — $ 4,855 $ (36 ) Residential mortgage-backed securities Agency 9 20,287 (82 ) — — 20,287 (82 ) Non-agency 3 4,568 (25 ) — — 4,568 (25 ) Total 19 $ 29,710 $ (143 ) $ — $ — $ 29,710 $ (143 ) Less than 12 Months 12 Months or Longer Total December 31, 2016 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Treasury Notes 3 $ 9,918 $ (79 ) $ — $ — $ 9,918 $ (79 ) U.S. Government agencies 10 58,857 (1,323 ) — — 58,857 (1,323 ) Obligations of states, municipalities and political subdivisions 14 7,799 (259 ) 115 (13 ) 7,914 (272 ) Residential mortgage-backed securities Agency 41 364,713 (8,483 ) 3,447 (157 ) 368,160 (8,640 ) Non-agency 2 19,933 (174 ) — — 19,933 (174 ) Commercial mortgage-backed securities Agency 8 70,762 (1,488 ) 6,641 (63 ) 77,403 (1,551 ) Non-agency 5 31,052 (1,009 ) — — 31,052 (1,009 ) Corporate securities 4 5,097 (78 ) 2,522 (8 ) 7,619 (86 ) Other securities 1 — — 1,994 (56 ) 1,994 (56 ) Total 88 $ 568,131 $ (12,893 ) $ 14,719 $ (297 ) $ 582,850 $ (13,190 ) Less than 12 Months 12 Months or Longer Total December 31, 2016 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Held-to-maturity Obligations of states, municipalities, and political subdivisions 22 $ 16,235 $ (229 ) $ — $ — $ 16,235 $ (229 ) Residential mortgage-backed securities Agency 15 52,156 (283 ) — — 52,156 (283 ) Non-agency 5 29,245 (442 ) — — 29,245 (442 ) Total 42 $ 97,636 $ (954 ) $ — $ — $ 97,636 $ (954 )
Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses	The proceeds For the Three Months Ended For the Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Proceeds $ — $ 107,949 $ 8 $ 507,362 Gross gains — 912 8 3,341 Gross losses — (110 ) — (110 )
Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	At September 30, 2017, the Amortized Cost Fair Value Available-for-sale Due in one year or less $ 5,289 $ 5,287 Due from one to five years 70,097 69,824 Due from five to ten years 42,448 42,006 Due after ten years 11,807 11,625 Mortgage-backed securities 459,239 451,524 Other securities with no defined maturity 2,926 4,418 Total $ 591,806 $ 584,684 Held-to-maturity Due from one to five years $ 524 $ 528 Due from five to ten years 13,735 13,835 Due after ten years 9,819 9,996 Mortgage-backed securities 97,375 97,907 Total $ 121,453 $ 122,266

Loan and Lease Receivables (Tab

Loan and Lease Receivables (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of Outstanding Loan and Lease Receivables	Outstanding loan and lease receivables as of the dates shown were categorized as follows: September 30, December 31, 2017 2016 Commercial real estate $ 862,523 $ 796,950 Residential real estate 582,569 610,699 Construction, land development, and other land 94,639 141,122 Commercial and industrial 503,093 439,476 Installment and other 3,208 2,917 Lease financing receivables 168,924 155,999 Total loans and leases 2,214,956 2,147,163 Net unamortized deferred fees and costs (1,874 ) (2,119 ) Initial direct costs 3,417 2,967 Allowance for loan and lease losses (15,980 ) (10,923 ) Net loans and leases $ 2,200,519 $ 2,137,088 September 30, December 31, 2017 2016 Lease financing receivables Net minimum lease payments $ 183,035 $ 168,345 Unguaranteed residual values 1,580 1,787 Unearned income (15,691 ) (14,133 ) Total lease financing receivables 168,924 155,999 Initial direct costs 3,417 2,967 Lease financial receivables before allowance for lease losses $ 172,341 $ 158,966
Summary of Minimum Annual Lease Payments for Lease Financing Receivables	The minimum Minimum Lease Payments 2017 $ 15,345 2018 62,718 2019 48,463 2020 32,863 2021 17,699 Thereafter 5,947 Total $ 183,035
Summary of Balances for Each Respective Loan and Lease Category	The following September 30, 2017 Originated Acquired Impaired Acquired Non- Impaired Total Commercial real estate $ 463,020 $ 173,106 $ 225,759 $ 861,885 Residential real estate 398,062 152,149 32,451 582,662 Construction, land development, and other land 85,666 5,424 3,214 94,304 Commercial and industrial 390,331 11,433 100,291 502,055 Installment and other 2,726 488 38 3,252 Lease financing receivables 134,193 — 38,148 172,341 Total loans and leases $ 1,473,998 $ 342,600 $ 399,901 $ 2,216,499 December 31, 2016 Originated Acquired Impaired Acquired Non- Impaired Total Commercial real estate $ 338,752 $ 207,303 $ 250,289 $ 796,344 Residential real estate 394,168 175,717 40,853 610,738 Construction, land development, and other land 119,357 6,979 14,430 140,766 Commercial and industrial 309,097 13,464 115,677 438,238 Installment and other 2,021 574 364 2,959 Lease financing receivables 118,493 — 40,473 158,966 Total loans and leases $ 1,281,888 $ 404,037 $ 462,086 $ 2,148,011
Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans	The outstanding September 30, 2017 December 31, 2016 Outstanding Balance Carrying Value Outstanding Balance Carrying Value Commercial real estate $ 245,182 $ 173,106 $ 278,893 $ 207,303 Residential real estate 215,135 152,149 236,384 175,717 Construction, land development, and other land 13,511 5,424 15,292 6,979 Commercial and industrial 20,255 11,433 23,164 13,464 Installment and other 1,842 488 1,976 574 Total acquired impaired loans $ 495,925 $ 342,600 $ 555,709 $ 404,037
Summary of Changes in Accretable Yield for Acquired Impaired Loans	The following table summarizes the changes in accretable yield for acquired impaired loans for the three and nine months ended September 30, 2017 and 2016: Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Beginning balance $ 37,619 $ 35,663 $ 36,868 $ 43,915 Accretion to interest income (8,165 ) (5,859 ) (24,768 ) (20,071 ) Reclassification from nonaccretable difference 6,901 1,777 24,255 7,737 Ending balance $ 36,355 $ 31,581 $ 36,355 $ 31,581
Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-Impaired Loans and Leases	Acquired non-impaired loans and leases —The unpaid principal balance and carrying value for acquired non-impaired loans and leases at September 30, 2017 and December 31, 2016 were as follows: September 30, 2017 December 31, 2016 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 232,016 $ 225,759 $ 259,055 $ 250,289 Residential real estate 32,984 32,451 41,282 40,853 Construction, land development, and other land 3,277 3,214 14,619 14,430 Commercial and industrial 111,167 100,291 125,806 115,677 Installment and other 352 38 402 364 Lease financing receivables 39,053 38,148 40,205 40,473 Total acquired non-impaired loans and leases $ 418,849 $ 399,901 $ 481,369 $ 462,086

Allowance for Loan and Lease 32

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of Allowance for Loan and Lease Losses and Corresponding Loan and Lease Balances	The following September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 3,668 $ 1,835 $ 327 $ 5,689 $ 344 $ 2,106 $ 13,969 Provisions 1,577 52 (111 ) 1,440 13 929 3,900 Charge-offs (186 ) (161 ) — (763 ) (327 ) (862 ) (2,299 ) Recoveries — — — — — 410 410 Ending balance $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 Nine months ended Beginning balance $ 1,945 $ 2,483 $ 742 $ 4,196 $ 334 $ 1,223 $ 10,923 Provisions 3,591 (400 ) (526 ) 3,932 23 2,686 9,306 Charge-offs (477 ) (357 ) — (1,762 ) (327 ) (2,399 ) (5,322 ) Recoveries — — — — — 1,073 1,073 Ending balance $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 Ending balance: Individually evaluated for impairment $ 1,186 $ 176 $ — $ 1,585 $ 2 $ — $ 2,949 Collectively evaluated for impairment 1,844 1,237 155 3,389 10 2,583 9,218 Loans acquired with deteriorated credit quality 2,029 313 61 1,392 18 — 3,813 Total allowance for loan and lease losses $ 5,059 $ 1,726 $ 216 $ 6,366 $ 30 $ 2,583 $ 15,980 September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 14,928 $ 1,948 $ 565 $ 6,075 $ 2 $ — $ 23,518 Collectively evaluated for impairment 673,851 428,565 88,315 484,547 2,762 172,341 1,850,381 Loans acquired with deteriorated credit quality 173,106 152,149 5,424 11,433 488 — 342,600 Total loans and leases $ 861,885 $ 582,662 $ 94,304 $ 502,055 $ 3,252 $ 172,341 $ 2,216,499 September 30, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 2,119 $ 1,303 $ 489 $ 1,472 $ 367 $ 740 $ 6,490 Provisions 27 41 66 624 (3 ) 928 1,683 Charge-offs (1,078 ) 25 (95 ) (2 ) (9 ) (671 ) (1,830 ) Recoveries — — — — — 158 158 Ending balance $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 Nine months ended Beginning balance $ 2,280 $ 2,981 $ 232 $ 1,403 $ 357 $ 379 $ 7,632 Provisions 3,050 (980 ) 323 768 8 2,179 5,348 Charge-offs (4,262 ) (632 ) (95 ) (77 ) (10 ) (1,934 ) (7,010 ) Recoveries — — — — — 531 531 Ending balance $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 Ending balance: Individually evaluated for impairment $ — $ 339 $ — $ 192 $ 328 $ — $ 859 Collectively evaluated for impairment 669 534 413 1,264 1 1,155 4,036 Loans acquired with deteriorated credit quality 399 496 47 638 26 — 1,606 Total allowance for loan and lease losses $ 1,068 $ 1,369 $ 460 $ 2,094 $ 355 $ 1,155 $ 6,501 September 30, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 6,374 $ 2,553 $ — $ 192 $ 328 $ — $ 9,447 Collectively evaluated for impairment 377,090 438,446 104,369 244,566 1,055 154,557 1,320,083 Loans acquired with deteriorated credit quality 187,359 185,979 7,539 6,512 590 — 387,979 Total loans and leases $ 570,823 $ 626,978 $ 111,908 $ 251,270 $ 1,973 $ 154,557 $ 1,717,509
Summary of Recorded Investment, Unpaid Principal Balance, and Related Allowance for Loans and Leases Considered Impaired	The following and September 30, 2017 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 9,541 $ 10,149 $ — Residential real estate 1,581 2,589 — Construction, land development and other land 565 565 — Commercial and industrial 3,465 3,652 — With an allowance recorded Commercial real estate 5,387 5,521 1,186 Residential real estate 367 387 176 Commercial and industrial 2,610 2,934 1,585 Installment and other 2 310 2 Total impaired loans $ 23,518 $ 26,107 $ 2,949 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 8,916 $ 9,502 $ — Residential real estate 804 1,999 — Commercial and Industrial 521 524 — With an allowance recorded Residential real estate 496 528 293 Commercial and industrial 861 869 396 Installment and other 328 361 328 Total impaired loans $ 11,926 $ 13,783 $ 1,017
Summary of Average Recorded Investment and Interest Income Recognized for Loans and Leases Considered Impaired	The following tables summarize the average recorded investment and interest income recognized for loans and leases considered impaired, which excludes acquired impaired loans, for the periods ended as follows: September 30, 2017 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 10,605 $ 419 Residential real estate 1,698 33 Construction, land development and other land 269 2 Commercial and Industrial 2,391 253 With an allowance recorded Commercial real estate 1,043 287 Residential real estate 444 4 Construction, land development and other land 19 — Commercial and industrial 1,673 500 Installment and other 213 11 Total impaired loans $ 18,355 $ 1,509
Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation	The following September 30, 2017 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Pass $ 617,061 $ 421,109 $ 73,781 $ 400,838 $ 2,761 $ 170,410 $ 1,685,960 Watch 44,273 4,871 11,947 71,752 3 214 133,060 Special Mention 11,958 2,513 2,587 10,104 — 894 28,056 Substandard 15,487 2,020 565 7,928 — 639 26,639 Doubtful — — — — — 184 184 Loss — — — — — — — Total $ 688,779 $ 430,513 $ 88,880 $ 490,622 $ 2,764 $ 172,341 $ 1,873,899 December 31, 2016 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Pass $ 536,499 $ 419,880 $ 129,732 $ 369,136 $ 2,052 $ 157,296 $ 1,614,595 Watch 38,707 10,885 2,897 52,872 4 324 105,689 Special Mention 5,377 3,116 1,158 1,258 1 512 11,422 Substandard 8,458 1,140 — 1,508 328 739 12,173 Doubtful — — — — — 95 95 Loss — — — — — — — Total $ 589,041 $ 435,021 $ 133,787 $ 424,774 $ 2,385 $ 158,966 $ 1,743,974
Summary of Contractual Delinquency Information	The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at September 30, 2017 and December 31, 2016: September 30, 2017 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 350 $ 596 $ — $ 8,672 $ 9,618 $ 679,161 $ 688,779 Residential real estate — 220 — 1,852 2,072 428,441 430,513 Construction, land development, and other land — — — 565 565 88,315 88,880 Commercial and industrial 2,245 416 — 3,537 6,198 484,424 490,622 Installment and other 2 — — — 2 2,762 2,764 Lease financing receivables 995 328 — 495 1,818 170,523 172,341 Total $ 3,592 $ 1,560 $ — $ 15,121 $ 20,273 $ 1,853,626 $ 1,873,899 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 2,944 $ 648 $ — $ 3,935 $ 7,527 $ 581,514 $ 589,041 Residential real estate 243 — — 1,118 1,361 433,660 435,021 Construction, land development, and other land 1,363 — — — 1,363 132,424 133,787 Commercial and industrial 6,066 374 — 958 7,398 417,376 424,774 Installment and other — — — 328 328 2,057 2,385 Lease financing receivables 2,070 390 — 445 2,905 156,061 158,966 Total $ 12,686 $ 1,412 $ — $ 6,784 $ 20,882 $ 1,723,092 $ 1,743,974

Servicing Assets (Tables)

Servicing Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Transfers And Servicing [Abstract]
Unpaid Principal Balances of Loans Serviced for Others	The unpaid as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Loan portfolios serviced for: SBA guaranteed loans $ 1,001,845 $ 911,803 USDA guaranteed loans 87,589 106,125 Total $ 1,089,434 $ 1,017,928
Activity for Servicing Assets and Related Changes in Fair Value	Activity for the nine months ended September 30, 2017 is Nine Months Ended September 30, 2017 Beginning balance $ 21,091 Additions, net 4,675 Changes in fair value (4,097 ) Ending balance $ 21,669

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2017
Banking And Thrift [Abstract]
Change in Other Real Estate Owned	The following table presents the change in other real estate owned (“OREO”) for the nine months ended September 30, 2017 and 2016. Nine Months Ended September 30, 2017 2016 Beginning balance $ 16,570 $ 26,715 Net additions to OREO 5,701 3,721 Proceeds from the sales of OREO (9,583 ) (15,392 ) Net gains on sales of OREO 1,538 1,134 Valuation adjustments (367 ) (904 ) Ending balance $ 13,859 $ 15,274

Goodwill, Core Deposit Intang35

Goodwill, Core Deposit Intangible and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Changes in Goodwill and Core Deposit Intangible Assets	The following table summarizes the changes in the Company’s goodwill and core deposit intangible assets for the nine months ended September 30, 2017 and 2016: Nine Months Ended September 30, 2017 2016 Goodwill Core Intangible Goodwill Core Deposit Intangible Beginning balance $ 51,975 $ 19,776 $ 25,688 $ 22,275 Amortization or accretion — (2,293 ) — (2,228 ) Ending balance $ 51,975 $ 17,483 $ 25,688 $ 20,047 Accumulated amortization or accretion N/A $ 12,703 N/A $ 9,653 Weighted average remaining amortization or accretion period N/A 5.8 Years N/A 6.8 Years
Estimated Amortization Expense for Core Deposit Intangible and Other Intangible Assets Recognized	The following table presents the estimated amortization expense for core deposit intangible and other intangible assets recognized at September 30, 2017: Estimated Amortization 2017 $ 767 2018 3,060 2019 3,050 2020 3,027 2021 3,017 Thereafter 4,601 Total $ 17,522

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2017
Deposits [Abstract]
Schedule Of Deposits	The composition of deposits was as follows as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Non-interest bearing demand deposits $ 753,662 $ 724,457 Interest bearing checking accounts 187,232 173,929 Money market demand accounts 418,006 369,074 Other savings 435,536 446,418 Time deposits (below $100,000) 377,929 392,854 Time deposits ($100,000 and above) 348,564 383,662 Total deposits $ 2,520,929 $ 2,490,394

Federal Home Loan Bank Advanc37

Federal Home Loan Bank Advances (Tables)	9 Months Ended
	Sep. 30, 2017
Federal Home Loan Banks [Abstract]
Summary of FHLB Advances Including Acquisition Accounting Adjustments Along with Weighted Average Costs and Scheduled Maturities	The following September 30, December 31, 2017 2016 Federal Home Loan Bank advances $ 234,559 $ 313,715 Weighted average cost 1.32 % 0.73 % Scheduled Maturities 2017 $ 225,000 2018 9,559 Total $ 234,559

Other Borrowings (Tables)

Other Borrowings (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Summary of Other Borrowings	The following is a summary of the Company’s other borrowings as of September 30, 2017 and December 31, 2016: September 30, December 31, 2017 2016 Securities sold under agreements to repurchase $ 30,807 $ 17,249 Line of credit — 20,650 Total $ 30,807 $ 37,899
Summary of Short-term Credit Lines Available for Use	The following September 30, December 31, 2017 2016 Federal Reserve Bank of Chicago discount window line $ 135,278 $ 110,600 Available federal funds lines 40,000 20,000

Junior Subordinated Debentures

Junior Subordinated Debentures (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Junior Subordinated Debentures by Issuance	At September 30, 2017 and December 31, 2016, the Name of Trust Aggregate Principal Amount September 30, 2017 Aggregate Principal Amount December 31, 2016 Stated Maturity Contractual Rate at September 30, 2017 Interest Rate Spread Metropolitan $ 35,000 $ 35,000 March 4.11 % Three-month LIBOR + 2.79% RidgeStone Capital Trust I 1,500 1,500 June 30, 2033 5.09 % Five-year LIBOR + 3.50% Total liability, at par 36,500 36,500 Discount (9,018 ) (9,574 ) Total liability, at carrying value $ 27,482 $ 26,926

Commitments and Contingent Li40

Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Summary of Minimum Annual Rental Commitments for Operating Leases	The minimum Minimum Commitments 2017 $ 754 2018 2,849 2019 2,506 2020 2,006 2021 1,759 Thereafter 3,025 Total $ 12,899
Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments	The following September 30, 2017 and December 31, 2016 September 30, December 31, 2017 2016 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit $ 46,427 $ 425,115 $ 37,731 $ 332,928 Standby letters of credit 1,050 3,655 1,060 4,135 Total $ 47,477 $ 428,770 $ 38,791 $ 337,063

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Summary of Company's Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following Fair Value Measurements Using September 30, 2017 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 14,925 $ 14,925 $ — $ — U.S. Government agencies 53,219 — 53,219 — Obligations of states, municipalities, and political subdivisions 32,535 — 31,985 550 Mortgage-backed securities; residential Agency 324,040 — 324,040 — Non-Agency 25,470 — 25,470 — Mortgage-backed securities; commercial Agency 70,757 — 70,757 — Non-Agency 31,257 — 31,257 — Corporate securities 27,524 — 27,524 — Other securities 4,957 1,938 2,480 539 Servicing assets 21,669 — — 21,669 Derivative assets 3,913 — 3,913 — Financial liabilities Derivative liabilities 1,190 — 1,190 — Fair Value Measurements Using December 31, 2016 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 14,920 $ 14,920 $ — $ — U.S. Government agencies 58,857 — 58,857 — Obligations of states, municipalities, and political subdivisions 16,059 — 15,509 550 Mortgage-backed securities; residential Agency 368,160 — 368,160 — Non-Agency 19,933 — 19,933 — Mortgage-backed securities; commercial Agency 77,403 — 77,403 — Non-Agency 31,052 — 31,052 — Corporate securities 17,329 — 17,329 — Other securities 4,847 1,938 2,379 530 Servicing assets 21,091 — — 21,091 Derivative assets 4,317 — 4,317 — Financial liabilities Derivative liabilities 559 — 559 —
Summary of Financial Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs	The following table presents additional information about financial assets measured at fair value on recurring basis for which the Company used significant unobservable inputs (Level 3): Nine Months Ended September 30, 2017 2016 2017 2016 Investment Securities Servicing Assets Balance, beginning of period $ 1,080 $ — $ 21,091 $ — Additions, net — — 4,675 — Amortization 3 — — — Change in unrealized loss 6 — — — Change in fair value — — (4,097 ) — Balance, end of period $ 1,089 $ — $ 21,669 $ —
Summary of Unobservable Inputs Used in the Fair Value Measurements on Recurring Basis	The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Range Impact to Valuation from an Increased or Higher Input Value Obligations of states, municipalities, and political obligations Discounted Probability of default 2.0%—2.4% 2.2 % Decrease Single issuer trust preferred Discounted cash flow Probability of default 7.5%—9.9% 8.9 % Decrease Servicing assets Discounted cash flow Prepayment speeds 1.7%—9.0% 7.6 % Decrease Discount rate 9.1%—16.2% 12.8 % Decrease Expected weighted average loan life 0.4—11.5 years 6.1 years Increase
Summary of Company's Assets Measured at Fair Value on a Non-Recurring Basis	The following tables Fair Value Measurements Using September 30, 2017 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 13,742 $ — $ — $ 13,742 Residential real estate 1,772 — — 1,772 Construction, land development, and other land 565 — — 565 Commercial and industrial 4,490 — — 4,490 Installment and other - — — - Assets held for sale 12,938 — — 12,938 Other real estate owned 13,859 — — 13,859 Fair Value Measurements Using December 31, 2016 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 8,916 $ — $ — $ 8,916 Residential real estate 1,007 — — 1,007 Construction, land development, and other land — — — — Commercial and industrial 986 — — 986 Installment and other — — — — Assets held for sale 14,748 — — 14,748 Other real estate owned 16,570 — — 16,570
Summary of the Valuation Technique, Unobservable Inputs and Qualitative Information About the Company?s Assets and Liabilities	The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Impact to Valuation from an Increased or Higher Input Value Impaired loans (excluding acquired impaired loans) Appraisals Appraisal adjustments, sales costs and other discount adjustments for market conditions 6% - 10% Decrease Assets held for sale List price, contract price Sales costs and other discount adjustments for market conditions 7% Decrease Other real estate owned Appraisals Appraisal adjustments, sales costs and other discount adjustments for market conditions 7% - 20% Decrease
Estimated Fair Values of Financial Instruments	The estimated September 30, December 31, Fair Value 2017 2016 Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets Cash and due from banks 1 $ 16,193 $ 16,193 $ 17,735 $ 17,735 Interest bearing deposits with other banks 2 46,043 46,043 28,798 28,798 Securities held-to-maturity 2 121,453 122,266 138,846 138,082 Other restricted stock 2 10,628 10,628 14,993 14,993 Loans held for sale 3 2,087 2,335 23,976 26,487 Loans and lease receivables, net 3 2,200,519 2,118,769 2,137,088 2,068,157 Accrued interest receivable 3 7,183 7,183 6,866 6,866 Financial liabilities Non-interest bearing deposits 2 753,662 753,662 724,457 724,457 Interest bearing deposits 2 1,767,267 1,721,537 1,765,937 1,723,941 Accrued interest payable 2 1,184 1,184 2,427 2,427 Line of credit 2 - - 20,650 20,650 Federal Home Loan Bank advances 2 234,559 234,543 313,715 313,646 Securities sold under repurchase agreement 2 30,807 30,807 17,249 17,249 Junior subordinated debentures 3 27,482 26,779 26,926 26,943

Derivative Instruments and He42

Derivative Instruments and Hedge Activities (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition	The following tables present the fair value of the Company’s derivative financial instruments and classification on the Consolidated Statements of Financial Condition as of September 30, 2017 and December 31, 2016: September 30, 2017 December 31, 2016 Fair Value Fair Value Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments Interest rate swaps designated as cash flow hedges $ 250,000 $ 3,265 $ 545 $ 100,000 $ 3,719 $ — Derivatives not designated as hedging instruments Other interest rate swaps 81,712 648 645 51,213 598 559 Total derivatives $ 331,712 $ 3,913 $ 1,190 $ 151,213 $ 4,317 $ 559
Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations Relating to Cash Flow Derivative Instruments	The following table reflects the net gains (losses) recorded in accumulated other comprehensive income (loss) and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the nine months ended September 30, 2017. Amount of Gain Recognized in OCI (Effective Portion) Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion) Interest rate swaps $ (1,408 ) $ (426 ) $ —
Summary of Other Interest Rate Swaps	The following table reflects other interest rate swaps as of September 30, 2017 Notional amounts $ 81,712 Derivative assets fair value 648 Derivative liabilities fair value 645 Weighted average pay rates 4.26 % Weighted average receive rates 3.68 % Weighted average maturity 6.1 years
Summary of Company's Interest Rate Derivative and Offsetting Positions	The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative asset and liabilities on the Consolidated Statements of Financial Condition. The table below summarizes the Company’s interest rate derivatives and offsetting positions as of September 30, 2017: Derivative Assets Fair Value Derivative Liabilities Fair Value Gross amounts recognized $ 3,913 $ 1,190 Less: Amounts offset in the Consolidated Statements of Financial Condition — — Net amount presented in the Consolidated Statements of Financial Condition $ 3,913 $ 1,190 Gross amounts not offset in the Consolidated Statements of Financial Condition Offsetting derivative positions (677 ) (677 ) Collateral posted (2,949 ) (502 ) Net credit exposure $ 287 $ 11

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock Compensation Expense	The following table summarizes stock option compensation expense for the nine months ended September 30, 2017 and 2016: Nine Months Ended September 30, 2017 2016 Total share-based compensation – stock options $ 857 $ 553 Income tax benefit 348 — Unrecognized compensation expense 1,074 1,431 Weighted-average amortization period remaining 1.2 years 2.0 years
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock Compensation Expense	The following table summarizes restricted stock compensation expense for the nine months ended September 30, 2017: Nine Months Ended September 30, 2017 Total share-based compensation - restricted stock $ 94 Income tax benefit 38 Unrecognized compensation expense 1,087 Weighted-average amortization period remaining 2.8 years
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Changes in Restricted Shares	The following table discloses the changes in restricted shares for the nine months ended September 30, 2017: Omnibus Plan Number of Shares Weighted Average Grant Date Fair Value Beginning balance — $ — Granted 58,900 $ 20.18 Vested — $ — Forfeited (400 ) $ 20.18 Ending balance outstanding at September 30, 2017 58,500 $ 20.18
BYB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair Value Assumptions of Stock Options	The fair values of the stock options were determined using the Black-Scholes-Merton model for Time Options and a Monte Carlo simulation model for Performance Options. The fair values of options under the BYB Plan were determined using the following assumptions as of the grant dates: Time Options Grants 2016 2015 Risk-free interest rate 1.34% - 1.40% 1.68% - 1.85% Expected term (years) 5.2 - 5.6 5.7 - 6.3 Expected stock price volatility 20.39 % 16.18%-16.55% Expected dividend yield 0.00 % 0.00 % Weighted average grant date fair value $ 3.55 $ 2.25 Performance Options Grants 2016 2015 Risk-free interest rate Implied forward rates Implied forward rates Expected term (years) Variable Variable Expected stock price volatility 20.34% - 20.39% 16.18%-16.55% Expected dividend yield 0.00 % 0.00 % Weighted average grant date fair value $ 3.75 $ 1.65
Summary of Activity in shares Subjected to Options and Weighted Average Exercise Prices	The following table discloses the activity in shares subject to options and the weighted average exercise prices, in actual dollars, for the nine months ended September 30, 2017: BYB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance 1,798,220 $ 11.95 $ 15,788 9.8 Granted — Expired — Exercised — Forfeited — Ending balance outstanding at September 30, 2017 1,798,220 $ 11.95 $ 16,545 7.9 Exercisable at September 30, 2017 835,263 $ 11.31 $ 8,310 7.7

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Earnings per Share	The following represent the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net income $ 9,755 $ 1,565 $ 22,461 $ 2,814 Less: Dividends on preferred shares 195 — 11,081 — Net income available to common stockholders $ 9,560 $ 1,565 $ 11,380 $ 2,814 Weighted-average common stock outstanding: Weighted-average common stock outstanding (basic) 29,246,900 19,497,811 26,194,025 18,838,354 Incremental shares 505,431 265,623 503,816 265,623 Weighted-average common stock outstanding (dilutive) 29,752,331 19,763,434 26,697,841 19,103,977 Basic earnings per common share $ 0.33 $ 0.08 $ 0.43 $ 0.15 Diluted earnings per common share $ 0.32 $ 0.08 $ 0.43 $ 0.15

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Summary of Preferred and Common Stock	A summary of the Company’s preferred and common stock at September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, 2017 2016 Series A non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 15,003 15,003 Shares issued — 15,003 Shares outstanding — 15,003 Series B 7.5% fixed non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 50,000 50,000 Shares issued 10,438 9,388 Subscription receivable — 1,050 Shares outstanding 10,438 9,388 Common stock, voting Par value $ 0.01 $ — Shares authorized 150,000,000 150,000,000 Shares issued 29,305,400 24,616,706 Shares outstanding 29,305,400 24,616,706

Acquisition of a Business - Add

Acquisition of a Business - Additional Information (Details)	Oct. 14, 2016USD ($)Subsidiary$ / sharesshares	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Goodwill		$ 51,975,000	$ 25,688,000	$ 51,975,000	$ 25,688,000
Ridgestone
Business Acquisition [Line Items]
Business acquisition date of agreement		Oct. 14, 2016
Number of operated wholly owned subsidiaries | Subsidiary	2
Total consideration included aggregate cash	$ 36,753,000
Issuance of common shares | shares	4,199,791
Common stock issued price per share | $ / shares	$ 16.25
Goodwill	$ 26,287,000
Acquisition advisory expenses			$ 1,100,000
Contingent assets or liabilities arising from the acquisition	$ 0

Acquisition of a Business - Sum

Acquisition of a Business - Summary of Estimates of fair Values of Assets and Liabilities Assumed as of Acquisition Date (Details) - USD ($) $ in Thousands	Oct. 14, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Consideration paid
Goodwill		$ 51,975	$ 51,975	$ 25,688	$ 25,688
Ridgestone
Assets
Cash and cash equivalents	$ 25,480
Securities available-for-sale	27,662
Restricted stock	931
Loans held for sale	15,363
Loans	351,820
Servicing assets	20,295
Premises and equipment	2,011
Other real estate owned	1,525
Other intangible assets	486
Bank-owned life insurance	2,352
Other assets	8,228
Total assets acquired	456,153
Liabilities
Deposits	361,370
Federal Home Loan Bank advances	9,773
Junior subordinated debentures	1,339
Accrued expenses and other liabilities	4,958
Total liabilities assumed	377,440
Net assets acquired	78,713
Consideration paid
Common stock (4,199,791 shares issued at $16.25 per share)	68,247
Cash paid	36,753
Total consideration paid	105,000
Goodwill	$ 26,287

Acquisition of a Business - S48

Acquisition of a Business - Summary of Estimates of fair Values of Assets and Liabilities Assumed as of Acquisition Date (Parenthetical) (Details) - Ridgestone	Oct. 14, 2016$ / sharesshares
Business Acquisition [Line Items]
Stock issued (in shares) | shares	4,199,791
Stock issued (in dollars per share) | $ / shares	$ 16.25

Acquisition of a Business - S49

Acquisition of a Business - Summary of Acquired Non-Impaired Loans as of Acquisition Date (Details) $ in Thousands	Oct. 14, 2016USD ($)
Business Combinations [Abstract]
Fair value	$ 312,166
Gross contractual amounts receivable	450,292
Estimate of contractual cash flows not expected to be collected	19,661	[1]
Estimate of contractual cash flows expected to be collected	$ 430,631
[1]	Includes interest payments not expected to be collected due to loan prepayments as well as principal and interest payments not expected to be collected due to customer default.

Acquisition of a Business - S50

Acquisition of a Business - Summary of Pro Forma Information for Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Business Combinations [Abstract]
Total revenues (net interest income and non-interest income)	$ 44,595	$ 130,536
Net income (loss)	$ 6,816	$ 17,603
Earnings per share—basic	$ 0.29	$ 0.76
Earnings per share—diluted	$ 0.28	$ 0.76

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Values of Securities Available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 591,806	$ 620,594
Available-for-sale Securities, Gross Unrealized Gains	2,147	1,156
Available-for-sale Securities, Gross Unrealized Losses	(9,269)	(13,190)
Available-for-sale Securities, Fair Value	584,684	608,560
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	14,998	14,995
Available-for-sale Securities, Gross Unrealized Gains		4
Available-for-sale Securities, Gross Unrealized Losses	(73)	(79)
Available-for-sale Securities, Fair Value	14,925	14,920
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	54,231	60,180
Available-for-sale Securities, Gross Unrealized Losses	(1,012)	(1,323)
Available-for-sale Securities, Fair Value	53,219	58,857
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	32,619	16,271
Available-for-sale Securities, Gross Unrealized Gains	129	60
Available-for-sale Securities, Gross Unrealized Losses	(213)	(272)
Available-for-sale Securities, Fair Value	32,535	16,059
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	329,782	376,800
Available-for-sale Securities, Gross Unrealized Gains	7
Available-for-sale Securities, Gross Unrealized Losses	(5,749)	(8,640)
Available-for-sale Securities, Fair Value	324,040	368,160
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	25,429	20,107
Available-for-sale Securities, Gross Unrealized Gains	87
Available-for-sale Securities, Gross Unrealized Losses	(46)	(174)
Available-for-sale Securities, Fair Value	25,470	19,933
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	72,190	78,954
Available-for-sale Securities, Gross Unrealized Gains	44
Available-for-sale Securities, Gross Unrealized Losses	(1,477)	(1,551)
Available-for-sale Securities, Fair Value	70,757	77,403
Non-Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	31,838	32,061
Available-for-sale Securities, Gross Unrealized Losses	(581)	(1,009)
Available-for-sale Securities, Fair Value	31,257	31,052
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	27,093	17,065
Available-for-sale Securities, Gross Unrealized Gains	493	350
Available-for-sale Securities, Gross Unrealized Losses	(62)	(86)
Available-for-sale Securities, Fair Value	27,524	17,329
Other Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	3,626	4,161
Available-for-sale Securities, Gross Unrealized Gains	1,387	742
Available-for-sale Securities, Gross Unrealized Losses	(56)	(56)
Available-for-sale Securities, Fair Value	$ 4,957	$ 4,847

Securities - Summary of Amort52

Securities - Summary of Amortized Cost and Fair Values of Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 121,453	$ 138,846
Held-to-maturity Securities, Gross Unrealized Gains	956	190
Held-to-maturity Securities, Gross Unrealized Losses	(143)	(954)
Securities held-to-maturity, fair value	122,266	138,082
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	24,078	24,878
Held-to-maturity Securities, Gross Unrealized Gains	317	105
Held-to-maturity Securities, Gross Unrealized Losses	(36)	(229)
Securities held-to-maturity, fair value	24,359	24,754
Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	56,453	67,692
Held-to-maturity Securities, Gross Unrealized Gains	275	35
Held-to-maturity Securities, Gross Unrealized Losses	(82)	(283)
Securities held-to-maturity, fair value	56,646	67,444
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	40,922	46,276
Held-to-maturity Securities, Gross Unrealized Gains	364	50
Held-to-maturity Securities, Gross Unrealized Losses	(25)	(442)
Securities held-to-maturity, fair value	$ 41,261	$ 45,884

Securities - Additional Informa

Securities - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)Security	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)Security	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Schedule Of Investments [Line Items]
Trading securities	$ 0		$ 0		$ 0
Investment securities with unrealized losses | Security	113		113
Investment securities with continuous unrealized loss position for twelve consecutive months or longer | Security	1		1
Net gains or (losses) reclassified from accumulated other comprehensive income (loss) into earnings	$ 0	$ 802,000	$ 8,000	$ 3,200,000
Carrying amount of securities pledged as collateral	226,000,000		226,000,000		178,600,000
Federal Home Loan Bank Advances
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	0		0		58,700,000
Public Fund Deposits
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	189,900,000		189,900,000		93,200,000
Customer Repurchase Agreements
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 35,900,000		$ 35,900,000		$ 19,900,000
Minimum
Schedule Of Investments [Line Items]
Percentage of amortized cost for which investments in unrealized loss position exceeds	5.00%		5.00%
Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies	10.00%		10.00%

Securities - Summary of Gross U

Securities - Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)Security
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	94	88
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 360,705	$ 568,131
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(5,786)	(12,893)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	141,854	14,719
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(3,483)	(297)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	502,559	582,850
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (9,269)	$ (13,190)
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	5	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 14,925	$ 9,918
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(73)	(79)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	14,925	9,918
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (73)	$ (79)
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	9	10
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 28,418	$ 58,857
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(438)	(1,323)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	24,801
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(574)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	53,219	58,857
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,012)	$ (1,323)
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	23	14
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 14,431	$ 7,799
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(122)	(259)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,082	115
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(91)	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	16,513	7,914
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (213)	$ (272)
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	40	41
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 222,548	$ 364,713
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(3,356)	(8,483)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	93,293	3,447
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(2,393)	(157)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	315,841	368,160
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (5,749)	$ (8,640)
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	1	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 4,789	$ 19,933
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(46)	(174)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	4,789	19,933
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (46)	$ (174)
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	7	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 39,378	$ 70,762
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(1,108)	(1,488)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	19,740	6,641
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(369)	(63)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	59,118	77,403
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,477)	$ (1,551)
Non-Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	5	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 31,257	$ 31,052
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(581)	(1,009)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	31,257	31,052
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (581)	$ (1,009)
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	3	4
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 4,959	$ 5,097
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(62)	(78)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		2,522
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses		(8)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	4,959	7,619
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (62)	$ (86)
Other Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	1	1
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	$ 1,938	$ 1,994
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(56)	(56)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	1,938	1,994
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (56)	$ (56)

Securities - Summary of Gross55

Securities - Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Held-to-maturity (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)Security
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Number of Securities | Security	19	42
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 29,710	$ 97,636
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(143)	(954)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	29,710	97,636
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (143)	$ (954)
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Number of Securities | Security	7	22
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 4,855	$ 16,235
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(36)	(229)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	4,855	16,235
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (36)	$ (229)
Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Number of Securities | Security	9	15
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 20,287	$ 52,156
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(82)	(283)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	20,287	52,156
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (82)	$ (283)
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Number of Securities | Security	3	5
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 4,568	$ 29,245
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(25)	(442)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	4,568	29,245
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (25)	$ (442)

Securities - Summary of Proceed

Securities - Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Available For Sale Securities Gross Realized Gain Loss [Abstract]
Proceeds	$ 107,949	$ 8	$ 507,362
Gross gains	912	$ 8	3,341
Gross losses	$ (110)		$ (110)

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Due in one year or less, Amortized Cost	$ 5,289
Available-for-sale Securities, Due from one to five years, Amortized Cost	70,097
Available-for-sale Securities, Due from five to ten years, Amortized Cost	42,448
Available-for-sale Securities, Due after ten years, Amortized Cost	11,807
Available-for-sale Securities, Amortized Cost	591,806	$ 620,594
Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]
Held-to-maturity Securities, Due from one to five years, Amortized Cost	524
Held-to-maturity Securities, Due from five to ten years, Amortized Cost	13,735
Held-to-maturity Securities, Due after ten years, Amortized Cost	9,819
Held-to-maturity Securities, Amortized Cost	121,453	138,846
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Due in one year or less, Fair Value	5,287
Available-for-sale Securities, Due from one to five years, Fair Value	69,824
Available-for-sale Securities, Due from five to ten years, Fair Value	42,006
Available-for-sale Securities, Due after ten years, Fair Value	11,625
Total	584,684	608,560
Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]
Held-to-maturity Securities, Due from one to five years, Fair Value	528
Held-to-maturity Securities, Due from five to ten years, Fair Value	13,835
Held-to-maturity Securities, Due after ten years, Fair Value	9,996
Total	122,266	138,082
Mortgage-Backed Securities
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Not due at single maturity, Amortized Cost	459,239
Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]
Held-to-maturity Securities, Mortgage-backed securities, Amortized Cost	97,375
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Not due at single maturity, Fair Value	451,524
Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]
Held-to-maturity Securities, Mortgage-backed securities, Fair Value	97,907
Other Securities With No Defined Maturity
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Not due at single maturity, Amortized Cost	2,926
Available-for-sale Securities, Amortized Cost	3,626	4,161
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Not due at single maturity, Fair Value	4,418
Total	$ 4,957	$ 4,847

Loan and Lease Receivables - Sc

Loan and Lease Receivables - Schedule of Outstanding Loan and Lease Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,214,956		$ 2,147,163
Net unamortized deferred fees and costs	(1,874)		(2,119)
Initial direct costs	3,417		2,967
Allowance for loan and lease losses	(15,980)	$ (13,969)	(10,923)	$ (6,501)	$ (6,490)	$ (7,632)
Net loans and leases	2,200,519		2,137,088
Lease financing receivables
Net minimum lease payments	183,035		168,345
Unguaranteed residual values	1,580		1,787
Unearned income	(15,691)		(14,133)
Total lease financing receivables	168,924		155,999
Initial direct costs	3,417		2,967
Lease financial receivables before allowance for lease losses	172,341		158,966
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	862,523		796,950
Allowance for loan and lease losses	(5,059)	(3,668)	(1,945)	(1,068)	(2,119)	(2,280)
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	582,569		610,699
Allowance for loan and lease losses	(1,726)	(1,835)	(2,483)	(1,369)	(1,303)	(2,981)
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	94,639		141,122
Allowance for loan and lease losses	(216)	(327)	(742)	(460)	(489)	(232)
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	503,093		439,476
Allowance for loan and lease losses	(6,366)	(5,689)	(4,196)	(2,094)	(1,472)	(1,403)
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,208		2,917
Allowance for loan and lease losses	(30)	(344)	(334)	(355)	(367)	(357)
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	168,924		155,999
Allowance for loan and lease losses	$ (2,583)	$ (2,106)	$ (1,223)	$ (1,155)	$ (740)	$ (379)

Loan and Lease Receivables - Ad

Loan and Lease Receivables - Additional Information (Details) - USD ($)	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,214,956,000		$ 2,147,163,000
Loans held for sale pledged as security for borrowings	530,300,000		507,200,000
Allowance for loan and lease losses	15,980,000	$ 13,969,000	10,923,000	$ 6,501,000	$ 6,490,000	$ 7,632,000
Acquired Impaired Loans
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan and lease losses	3,800,000		1,600,000
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,208,000		2,917,000
Overdraft deposits reclassified as loans	483,000		1,000,000
Allowance for loan and lease losses	30,000	$ 344,000	334,000	$ 355,000	$ 367,000	$ 357,000
U.S. Government Guaranteed Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 51,900,000		$ 34,800,000

Loan and Lease Receivables - Su

Loan and Lease Receivables - Summary of Minimum Annual Lease Payments for Lease Financing Receivables (Details) $ in Thousands	Sep. 30, 2017USD ($)
Receivables [Abstract]
2,017	$ 15,345
2,018	62,718
2,019	48,463
2,020	32,863
2,021	17,699
Thereafter	5,947
Total	$ 183,035

Loan and Lease Receivables - 61

Loan and Lease Receivables - Summary of Balances for Each Respective Loan and Lease Category (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,216,499	$ 2,148,011	$ 1,717,509
Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,473,998	1,281,888
Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	342,600	404,037
Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	399,901	462,086
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	861,885	796,344	570,823
Commercial Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	463,020	338,752
Commercial Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	173,106	207,303
Commercial Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	225,759	250,289
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	582,662	610,738	626,978
Residential Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	398,062	394,168
Residential Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	152,149	175,717
Residential Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	32,451	40,853
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	94,304	140,766	111,908
Construction, Land Development, and Other Land | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	85,666	119,357
Construction, Land Development, and Other Land | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	5,424	6,979
Construction, Land Development, and Other Land | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,214	14,430
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	502,055	438,238	251,270
Commercial and Industrial | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	390,331	309,097
Commercial and Industrial | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	11,433	13,464
Commercial and Industrial | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	100,291	115,677
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,252	2,959	1,973
Installment and Other | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	2,726	2,021
Installment and Other | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	488	574
Installment and Other | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	38	364
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	172,341	158,966	$ 154,557
Lease Financing Receivables | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	134,193	118,493
Lease Financing Receivables | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 38,148	$ 40,473

Loan and Lease Receivables - 62

Loan and Lease Receivables - Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans (Details) - Acquired Impaired Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	$ 495,925	$ 555,709
Carrying Value	342,600	404,037
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	245,182	278,893
Carrying Value	173,106	207,303
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	215,135	236,384
Carrying Value	152,149	175,717
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	13,511	15,292
Carrying Value	5,424	6,979
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	20,255	23,164
Carrying Value	11,433	13,464
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	1,842	1,976
Carrying Value	$ 488	$ 574

Loan and Lease Receivables - 63

Loan and Lease Receivables - Summary of Changes in Accretable Yield for Acquired Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Receivables [Abstract]
Beginning balance	$ 37,619	$ 35,663	$ 36,868	$ 43,915
Accretion to interest income	(8,165)	(5,859)	(24,768)	(20,071)
Reclassification from nonaccretable difference	6,901	1,777	24,255	7,737
Ending balance	$ 36,355	$ 31,581	$ 36,355	$ 31,581

Loan and Lease Receivables - 64

Loan and Lease Receivables - Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-impaired Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	$ 2,216,499	$ 2,148,011	$ 1,717,509
Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	418,849	481,369
Loans and leases	399,901	462,086
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	861,885	796,344	570,823
Commercial Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	232,016	259,055
Loans and leases	225,759	250,289
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	582,662	610,738	626,978
Residential Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	32,984	41,282
Loans and leases	32,451	40,853
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	94,304	140,766	111,908
Construction, Land Development, and Other Land | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	3,277	14,619
Loans and leases	3,214	14,430
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	502,055	438,238	251,270
Commercial and Industrial | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	111,167	125,806
Loans and leases	100,291	115,677
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	3,252	2,959	1,973
Installment and Other | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	352	402
Loans and leases	38	364
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	172,341	158,966	$ 154,557
Lease Financing Receivables | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	39,053	40,205
Loans and leases	$ 38,148	$ 40,473

Allowance for Loan and Lease 65

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Allowance for Loan and Lease Losses and Corresponding Loan and Lease Balances (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Allowance for loan and lease losses
Beginning balance	$ 13,969	$ 6,490	$ 10,923	$ 7,632
Provisions	3,900	1,683	9,306	5,348
Charge-offs	(2,299)	(1,830)	(5,322)	(7,010)
Recoveries	410	158	1,073	531
Ending balance	15,980	6,501	15,980	6,501
Ending balance:
Individually evaluated for impairment					$ 2,949		$ 859
Collectively evaluated for impairment					9,218		4,036
Allowance for loan and lease losses	15,980	6,490	15,980	6,501	15,980	$ 10,923	6,501
Loans and leases ending balance:
Individually evaluated for impairment					23,518		9,447
Collectively evaluated for impairment					1,850,381		1,320,083
Total loans and leases					2,216,499	2,148,011	1,717,509
Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					3,813		1,606
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					342,600		387,979
Commercial Real Estate
Allowance for loan and lease losses
Beginning balance	3,668	2,119	1,945	2,280
Provisions	1,577	27	3,591	3,050
Charge-offs	(186)	(1,078)	(477)	(4,262)
Ending balance	5,059	1,068	5,059	1,068
Ending balance:
Individually evaluated for impairment					1,186
Collectively evaluated for impairment					1,844		669
Allowance for loan and lease losses	3,668	2,119	5,059	1,068	5,059	1,945	1,068
Loans and leases ending balance:
Individually evaluated for impairment					14,928		6,374
Collectively evaluated for impairment					673,851		377,090
Total loans and leases					861,885	796,344	570,823
Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					2,029		399
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					173,106		187,359
Residential Real Estate
Allowance for loan and lease losses
Beginning balance	1,835	1,303	2,483	2,981
Provisions	52	41	(400)	(980)
Charge-offs	(161)	25	(357)	(632)
Ending balance	1,726	1,369	1,726	1,369
Ending balance:
Individually evaluated for impairment					176		339
Collectively evaluated for impairment					1,237		534
Allowance for loan and lease losses	1,835	1,303	1,726	1,369	1,726	2,483	1,369
Loans and leases ending balance:
Individually evaluated for impairment					1,948		2,553
Collectively evaluated for impairment					428,565		438,446
Total loans and leases					582,662	610,738	626,978
Residential Real Estate | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					313		496
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					152,149		185,979
Construction, Land Development, and Other Land
Allowance for loan and lease losses
Beginning balance	327	489	742	232
Provisions	(111)	66	(526)	323
Charge-offs		(95)		(95)
Ending balance	216	460	216	460
Ending balance:
Collectively evaluated for impairment					155		413
Allowance for loan and lease losses	327	489	216	460	216	742	460
Loans and leases ending balance:
Individually evaluated for impairment					565
Collectively evaluated for impairment					88,315		104,369
Total loans and leases					94,304	140,766	111,908
Construction, Land Development, and Other Land | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					61		47
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					5,424		7,539
Commercial and Industrial
Allowance for loan and lease losses
Beginning balance	5,689	1,472	4,196	1,403
Provisions	1,440	624	3,932	768
Charge-offs	(763)	(2)	(1,762)	(77)
Ending balance	6,366	2,094	6,366	2,094
Ending balance:
Individually evaluated for impairment					1,585		192
Collectively evaluated for impairment					3,389		1,264
Allowance for loan and lease losses	5,689	1,472	6,366	2,094	6,366	4,196	2,094
Loans and leases ending balance:
Individually evaluated for impairment					6,075		192
Collectively evaluated for impairment					484,547		244,566
Total loans and leases					502,055	438,238	251,270
Commercial and Industrial | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					1,392		638
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					11,433		6,512
Installment and Other
Allowance for loan and lease losses
Beginning balance	344	367	334	357
Provisions	13	(3)	23	8
Charge-offs	(327)	(9)	(327)	(10)
Ending balance	30	355	30	355
Ending balance:
Individually evaluated for impairment					2		328
Collectively evaluated for impairment					10		1
Allowance for loan and lease losses	344	367	30	355	30	334	355
Loans and leases ending balance:
Individually evaluated for impairment					2		328
Collectively evaluated for impairment					2,762		1,055
Total loans and leases					3,252	2,959	1,973
Installment and Other | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality					18		26
Loans and leases ending balance:
Loans acquired with deteriorated credit quality					488		590
Lease Financing Receivables
Allowance for loan and lease losses
Beginning balance	2,106	740	1,223	379
Provisions	929	928	2,686	2,179
Charge-offs	(862)	(671)	(2,399)	(1,934)
Recoveries	410	158	1,073	531
Ending balance	2,583	1,155	2,583	1,155
Ending balance:
Collectively evaluated for impairment					2,583		1,155
Allowance for loan and lease losses	$ 2,106	$ 740	$ 2,583	$ 1,155	2,583	1,223	1,155
Loans and leases ending balance:
Collectively evaluated for impairment					172,341		154,557
Total loans and leases					$ 172,341	$ 158,966	$ 154,557

Allowance for Loan and Lease 66

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ 2,000,000	$ 11,000	$ 5,100,000	$ (1,100,000)
Recorded investment in troubled debt restructurings	2,300,000		2,300,000		$ 1,200,000
Commitments outstanding on troubled debt restructurings	0		0		0
Recorded investment in troubled debt restructurings that subsequently defaulted within twelve months	$ 0		$ 0		477,000
Number of loans modified under troubled debt restructuring | Loan	867,000		2,100,000
Reserve for unfunded commitments	$ 1,000,000		$ 1,000,000		760,000
Provisions for unfunded commitments			272,000	56,000
Charge-offs or recoveries related to reserve for unfunded commitments			0		$ 0
Acquired Impaired Loans
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ 559,000	$ 8,000	$ 2,200,000	$ (1,700,000)

Allowance for Loan and Lease 67

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Recorded Investment, Unpaid Principal Balance, and Related Allowance for Loans and Leases Considered Impaired (Details) - Loans Excluding Acquired Impaired Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Impaired [Line Items]
Recorded Investment	$ 23,518	$ 11,926
Unpaid Principal Balance	26,107	13,783
Related Allowance	2,949	1,017
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	9,541	8,916
Recorded Investment, With an allowance recorded	5,387
Unpaid Principal Balance, With no related allowance recorded	10,149	9,502
Unpaid Principal Balance, With an allowance recorded	5,521
Related Allowance	1,186
Residential Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,581	804
Recorded Investment, With an allowance recorded	367	496
Unpaid Principal Balance, With no related allowance recorded	2,589	1,999
Unpaid Principal Balance, With an allowance recorded	387	528
Related Allowance	176	293
Construction, Land Development, and Other Land
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	565
Unpaid Principal Balance, With no related allowance recorded	565
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	3,465	521
Recorded Investment, With an allowance recorded	2,610	861
Unpaid Principal Balance, With no related allowance recorded	3,652	524
Unpaid Principal Balance, With an allowance recorded	2,934	869
Related Allowance	1,585	396
Installment and Other
Financing Receivable Impaired [Line Items]
Recorded Investment, With an allowance recorded	2	328
Unpaid Principal Balance, With an allowance recorded	310	361
Related Allowance	$ 2	$ 328

Allowance for Loan and Lease 68

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Average Recorded Investment and Interest Income Recognized for Loans and Leases Considered Impaired (Details) - Loans Excluding Acquired Impaired Loans - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable Impaired [Line Items]
Average Recorded Investment		$ 18,355	$ 8,337
Interest Income Recognized	$ 192	1,509
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded		10,605	4,129
Average Recorded Investment, With an allowance recorded		1,043	2,099
Interest Income Recognized, With no related allowance recorded	128	419
Interest Income Recognized, With an allowance recorded		287
Residential Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded		1,698	2,479
Average Recorded Investment, With an allowance recorded		444	727
Interest Income Recognized, With no related allowance recorded	65	33
Interest Income Recognized, With an allowance recorded	7	4
Construction, Land Development, and Other Land
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded		269	96
Average Recorded Investment, With an allowance recorded		19	156
Interest Income Recognized, With no related allowance recorded		2
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded		2,391	12
Average Recorded Investment, With an allowance recorded		1,673	171
Interest Income Recognized, With no related allowance recorded		253
Interest Income Recognized, With an allowance recorded	2	500
Installment and Other
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With an allowance recorded		213	$ 328
Interest Income Recognized, With an allowance recorded	$ 11	$ 11

Allowance for Loan and Lease 69

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 2,216,499	$ 2,148,011	$ 1,717,509
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	861,885	796,344	570,823
Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	582,662	610,738	626,978
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	94,304	140,766	111,908
Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	502,055	438,238	251,270
Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,252	2,959	1,973
Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	172,341	158,966	$ 154,557
Loans Excluding Acquired Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,873,899	1,743,974
Loans Excluding Acquired Impaired Loans | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	688,779	589,041
Loans Excluding Acquired Impaired Loans | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	430,513	435,021
Loans Excluding Acquired Impaired Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	88,880	133,787
Loans Excluding Acquired Impaired Loans | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	490,622	424,774
Loans Excluding Acquired Impaired Loans | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,764	2,385
Loans Excluding Acquired Impaired Loans | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	172,341	158,966
Loans Excluding Acquired Impaired Loans | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,685,960	1,614,595
Loans Excluding Acquired Impaired Loans | Pass | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	617,061	536,499
Loans Excluding Acquired Impaired Loans | Pass | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	421,109	419,880
Loans Excluding Acquired Impaired Loans | Pass | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	73,781	129,732
Loans Excluding Acquired Impaired Loans | Pass | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	400,838	369,136
Loans Excluding Acquired Impaired Loans | Pass | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,761	2,052
Loans Excluding Acquired Impaired Loans | Pass | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	170,410	157,296
Loans Excluding Acquired Impaired Loans | Watch
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	133,060	105,689
Loans Excluding Acquired Impaired Loans | Watch | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	44,273	38,707
Loans Excluding Acquired Impaired Loans | Watch | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	4,871	10,885
Loans Excluding Acquired Impaired Loans | Watch | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	11,947	2,897
Loans Excluding Acquired Impaired Loans | Watch | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	71,752	52,872
Loans Excluding Acquired Impaired Loans | Watch | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3	4
Loans Excluding Acquired Impaired Loans | Watch | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	214	324
Loans Excluding Acquired Impaired Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	28,056	11,422
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	11,958	5,377
Loans Excluding Acquired Impaired Loans | Special Mention | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,513	3,116
Loans Excluding Acquired Impaired Loans | Special Mention | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,587	1,158
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	10,104	1,258
Loans Excluding Acquired Impaired Loans | Special Mention | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases		1
Loans Excluding Acquired Impaired Loans | Special Mention | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	894	512
Loans Excluding Acquired Impaired Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	26,639	12,173
Loans Excluding Acquired Impaired Loans | Substandard | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	15,487	8,458
Loans Excluding Acquired Impaired Loans | Substandard | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,020	1,140
Loans Excluding Acquired Impaired Loans | Substandard | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	565
Loans Excluding Acquired Impaired Loans | Substandard | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	7,928	1,508
Loans Excluding Acquired Impaired Loans | Substandard | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases		328
Loans Excluding Acquired Impaired Loans | Substandard | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	639	739
Loans Excluding Acquired Impaired Loans | Doubtful
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	184	95
Loans Excluding Acquired Impaired Loans | Doubtful | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 184	$ 95

Allowance for Loan and Lease 70

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Contractual Delinquency Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	$ 2,216,499	$ 2,148,011	$ 1,717,509
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	861,885	796,344	570,823
Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	582,662	610,738	626,978
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	94,304	140,766	111,908
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	502,055	438,238	251,270
Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	3,252	2,959	1,973
Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	172,341	158,966	$ 154,557
Acquired Non-Impaired and Originated Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	20,273	20,882
Non-accrual	15,121	6,784
Current	1,853,626	1,723,092
Total loans and leases	1,873,899	1,743,974
Acquired Non-Impaired and Originated Loans | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,592	12,686
Acquired Non-Impaired and Originated Loans | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,560	1,412
Acquired Non-Impaired and Originated Loans | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	9,618	7,527
Non-accrual	8,672	3,935
Current	679,161	581,514
Total loans and leases	688,779	589,041
Acquired Non-Impaired and Originated Loans | Commercial Real Estate | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	350	2,944
Acquired Non-Impaired and Originated Loans | Commercial Real Estate | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	596	648
Acquired Non-Impaired and Originated Loans | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,072	1,361
Non-accrual	1,852	1,118
Current	428,441	433,660
Total loans and leases	430,513	435,021
Acquired Non-Impaired and Originated Loans | Residential Real Estate | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		243
Acquired Non-Impaired and Originated Loans | Residential Real Estate | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	220
Acquired Non-Impaired and Originated Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	565	1,363
Non-accrual	565
Current	88,315	132,424
Total loans and leases	88,880	133,787
Acquired Non-Impaired and Originated Loans | Construction, Land Development, and Other Land | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,363
Acquired Non-Impaired and Originated Loans | Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	6,198	7,398
Non-accrual	3,537	958
Current	484,424	417,376
Total loans and leases	490,622	424,774
Acquired Non-Impaired and Originated Loans | Commercial and Industrial | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,245	6,066
Acquired Non-Impaired and Originated Loans | Commercial and Industrial | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	416	374
Acquired Non-Impaired and Originated Loans | Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2	328
Non-accrual		328
Current	2,762	2,057
Total loans and leases	2,764	2,385
Acquired Non-Impaired and Originated Loans | Installment and Other | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,818	2,905
Non-accrual	495	445
Current	170,523	156,061
Total loans and leases	172,341	158,966
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	995	2,070
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 328	$ 390

Servicing Assets - Unpaid Princ

Servicing Assets - Unpaid Principal Balances of Loans Serviced for Others (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 1,089,434	$ 1,017,928
SBA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	1,001,845	911,803
USDA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 87,589	$ 106,125

Servicing Assets - Activity for

Servicing Assets - Activity for Servicing Assets and Related Changes in Fair Value (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Transfers And Servicing [Abstract]
Beginning balance	$ 21,091
Additions, net	4,675
Changes in fair value	(4,097)
Ending balance	$ 21,669

Servicing Assets - Additional I

Servicing Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Transfers And Servicing [Abstract]
Servicing fees	$ 959	$ 2,954

Other Real Estate Owned - Chang

Other Real Estate Owned - Change in Other Real Estate Owned (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Banking And Thrift [Abstract]
Other real estate owned, beginning balance	$ 16,570	$ 26,715
Net additions to OREO	5,701	3,721
Proceeds from the sales of OREO	(9,583)	(15,392)
Net gains on sales of OREO	1,538	1,134
Valuation adjustments	(367)	(904)
Other real estate owned, ending balance	$ 13,859	$ 15,274

Other Real Estate Owned - Addit

Other Real Estate Owned - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Banking And Thrift [Abstract]
Residential mortgage loans in process of foreclosure	$ 2	$ 2.7

Goodwill, Core Deposit Intang76

Goodwill, Core Deposit Intangible and Other Intangible Assets - Summary of Changes in Goodwill and Core Deposit Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance, Goodwill			$ 51,975	$ 25,688
Ending balance, Goodwill	$ 51,975	$ 25,688	51,975	25,688
Amortization or accretion	(769)	(747)	(2,307)	(2,242)
Core Deposits
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance			19,776	22,275
Amortization or accretion			(2,293)	(2,228)
Ending balance	17,483	20,047	17,483	20,047
Accumulated amortization or accretion	$ 12,703	$ 9,653	$ 12,703	$ 9,653
Weighted average remaining amortization or accretion period			5 years 9 months 19 days	6 years 9 months 19 days

Goodwill, Core Deposit Intang77

Goodwill, Core Deposit Intangible and Other Intangible Assets - Additional Information (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 17,522,000	$ 19,826,000
Trademark
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 39,000	$ 50,000

Goodwill, Core Deposit Intang78

Goodwill, Core Deposit Intangible and Other Intangible Assets - Estimated Amortization Expense for Core Deposit Intangible and Other Intangible Assets Recognized (Details) $ in Thousands	Sep. 30, 2017USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2,017	$ 767
2,018	3,060
2,019	3,050
2,020	3,027
2,021	3,017
Thereafter	4,601
Total	$ 17,522

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	Jul. 01, 2017	Sep. 30, 2017	Dec. 31, 2016	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Income Tax [Line Items]
Effective tax rate					24.40%	(8.60%)
Reversal of valuation allowance on net deferred tax assets			$ 61.9
Increase (decrease) in deferred tax asset					$ (7.4)
Deferred tax assets, net		$ 60.4	$ 67.8		$ 60.4
Illinois | State
Income Tax [Line Items]
Corporate income tax rate	7.00%			5.25%
State income tax benefit due to increased value of deferred tax asset related to net loss deduction		$ 4.6

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits - (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deposits [Abstract]
Non-interest bearing demand deposits	$ 753,662	$ 724,457
Interest bearing checking accounts	187,232	173,929
Money market demand accounts	418,006	369,074
Other savings	435,536	446,418
Time deposits (below $100,000)	377,929	392,854
Time deposits ($100,000 and above)	348,564	383,662
Total deposits	$ 2,520,929	$ 2,490,394

Deposits - Additional Informati

Deposits - Additional Information - (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Deposits [Abstract]
Brokered deposits	$ 0	$ 30,800,000
Time deposits 250000 or more	$ 83,400,000	$ 117,400,000

Federal Home Loan Bank Advanc82

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank advances, acquisition accounting adjustments	$ 72,000	$ 228,000
Additional borrowing capacity from FHLB	$ 913,000,000	647,900,000
Federal home loan bank advances maximum borrowing capacity as percentage of total assets	35.00%
Federal home loan bank, advances, putable option	$ 234,559,000	$ 313,715,000
Ridgestone
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank, advances, putable option	$ 1,500,000
Minimum
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank advances, Interest rate	1.24%
Federal home loan bank fixed fate advances, maturity date	2017-12
Maximum
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank advances, Interest rate	3.22%
Federal home loan bank fixed fate advances, maturity date	2018-02

Federal Home Loan Bank Advanc83

Federal Home Loan Bank Advances - Summary of FHLB Advances Including Acquisition Accounting Adjustments Along with Weighted Average Costs and Scheduled Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank advances	$ 234,559	$ 313,715
Weighted average cost	1.32%	0.73%
2,017	$ 225,000
2,018	9,559
Total	$ 234,559	$ 313,715

Other Borrowings - Summary of O

Other Borrowings - Summary of Other Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Securities sold under agreements to repurchase	$ 30,807	$ 17,249
Line of credit		20,650
Total	$ 30,807	$ 37,899

Other Borrowings - Additional I

Other Borrowings - Additional Information (Details) - USD ($)	Oct. 12, 2017	Jul. 31, 2017	Sep. 30, 2017	Apr. 30, 2017	Dec. 31, 2016	Oct. 13, 2016
Line Of Credit Facility [Line Items]
Line of credit facility, amount					$ 20,650,000
Repayment of lines of credit		$ 16,200,000	$ 20,650,000
Short-term credit lines available for use, outstanding			$ 0		$ 0
Ridgestone | CIBC Bank USA | Credit agreement
Line Of Credit Facility [Line Items]
Line of credit facility, amount						$ 30,000,000
Line of credit facility, commitment fee payable						$ 300,000
Line of credit facility, maturity date			Oct. 12, 2017
Line of credit facility, interest rate			4.25%		3.75%
Ridgestone | CIBC Bank USA | Amended Credit Agreement
Line Of Credit Facility [Line Items]
Line of credit facility, revolving credit conversion to non-revolving line of credit, description			In April 2017, the revolving line of credit was amended to a non-revolving line of credit as long as the outstanding balance exceeds $5.0 million.
Line of credit facility, revolving credit conversion to non-revolving line of credit, threshold amount				$ 5,000,000
Threshold amount for conversion of line of credit into revolving line of credit				5,000,000
Revolving line of credit facility, maximum borrowing capacity				$ 5,000,000
Subsequent Event | Ridgestone | CIBC Bank USA | Amended Credit Agreement
Line Of Credit Facility [Line Items]
Line of credit facility, extended maturity date	Oct. 11, 2018
Line of credit facility, interest rate terms	The amended revolving line of credit bears interest at either the LIBOR Rate plus 250 basis points or the Prime Rate minus 25 basis points, based on the Company’s election, which is required to be communicated to CIBC at least three business days prior to the commencement of an interest period. If the Company fails to provide timely notification, the interest rate will be Prime Rate minus 25 basis points.
Subsequent Event | Ridgestone | CIBC Bank USA | Amended Credit Agreement | LIBOR Rate
Line Of Credit Facility [Line Items]
Interest rate spread	2.50%
Subsequent Event | Ridgestone | CIBC Bank USA | Amended Credit Agreement | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate spread	0.25%

Other Borrowings - Summary of S

Other Borrowings - Summary of Short-term Credit Lines Available for Use (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Federal Reserve Bank of Chicago Discount Window Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 135,278	$ 110,600
Available Federal Funds Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 40,000	$ 20,000

Junior Subordinated Debenture87

Junior Subordinated Debentures - Junior Subordinated Debentures by Issuance (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	$ 36,500	$ 36,500
Total liability, at carrying value	27,482	26,926
Metropolitan Statutory Trust 1
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	35,000	35,000
RidgeStone Capital Trust I
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	1,500	1,500
Junior Subordinated Debentures
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Discount	$ (9,018)	$ (9,574)
Junior Subordinated Debentures | Metropolitan Statutory Trust 1
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Stated Maturity	Mar. 17, 2034
Contractual Rate	4.11%	3.78%
Junior Subordinated Debentures | Metropolitan Statutory Trust 1 | Three-month LIBOR
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Interest Rate Spread, Description	Three-month LIBOR
Interest Rate Spread	2.79%
Junior Subordinated Debentures | RidgeStone Capital Trust I
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Stated Maturity	Jun. 30, 2033
Contractual Rate	5.09%	5.09%
Junior Subordinated Debentures | RidgeStone Capital Trust I | Five-year LIBOR
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Interest Rate Spread, Description	Five-year LIBOR
Interest Rate Spread	3.50%

Junior Subordinated Debenture88

Junior Subordinated Debentures - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal amount	$ 36,500,000	$ 36,500,000
Accrued interest payable	1,184,000	2,427,000
Metropolitan Statutory Trust 1
Debt Instrument [Line Items]
Principal amount	$ 35,000,000	$ 35,000,000
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures
Debt Instrument [Line Items]
Contractual rate	4.11%	3.78%
Accrued interest payable	$ 54,000	$ 50,000
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures | Three-month LIBOR
Debt Instrument [Line Items]
Interest rate spread	2.79%
RidgeStone Capital Trust I
Debt Instrument [Line Items]
Principal amount	$ 1,500,000	$ 1,500,000
RidgeStone Capital Trust I | Junior Subordinated Debentures
Debt Instrument [Line Items]
Contractual rate	5.09%	5.09%
Accrued interest payable	$ 0	$ 0
RidgeStone Capital Trust I | Junior Subordinated Debentures | Five-year LIBOR
Debt Instrument [Line Items]
Interest rate spread	3.50%

Commitments and Contingent Li89

Commitments and Contingent Liabilities - Summary of Minimum Annual Rental Commitments for Operating Leases (Details) $ in Thousands	Sep. 30, 2017USD ($)
Commitments And Contingencies Disclosure [Abstract]
2,017	$ 754
2,018	2,849
2,019	2,506
2,020	2,006
2,021	1,759
Thereafter	3,025
Total	$ 12,899

Commitments and Contingent Li90

Commitments and Contingent Liabilities - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)Violation	Sep. 30, 2016USD ($)
Commitments And Contingencies Liabilities [Line Items]
Rental expenses	$ 1,100,000	$ 950,000	$ 3,400,000	$ 2,700,000
Sublease income	$ 166,000	$ 187,000	$ 526,000	$ 551,000
Number of violations of conditions established to extend credit commitments. | Violation			0
Fixed rate loan commitments maturity year			2,020
Variable rate loan commitments maturity year			2,040
Maximum
Commitments And Contingencies Liabilities [Line Items]
Commitments to make loans period			90 days
Loan commitments fixed interest rate	19.50%		19.50%
Loan commitments variable interest rate	8.25%		8.25%
Minimum
Commitments And Contingencies Liabilities [Line Items]
Loan commitments fixed interest rate	3.23%		3.23%
Loan commitments variable interest rate	2.45%		2.45%

Commitments and Contingent Li91

Commitments and Contingent Liabilities - Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	$ 47,477	$ 38,791
Variable Rate	428,770	337,063
Commitments to Extend Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	46,427	37,731
Variable Rate	425,115	332,928
Standby Letters of Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	1,050	1,060
Variable Rate	$ 3,655	$ 4,135

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Financial Assets And Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	$ 584,684	$ 608,560
Servicing assets, at fair value	21,669	21,091
Derivative assets	3,913
Derivative liabilities	1,190
U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	14,925	14,920
U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	53,219	58,857
Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	32,535	16,059
Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	27,524	17,329
Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	4,957	4,847
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	21,669	21,091
Derivative assets	3,913	4,317
Derivative liabilities	1,190	559
Fair Value, Measurements, Recurring | U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	14,925	14,920
Fair Value, Measurements, Recurring | U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	53,219	58,857
Fair Value, Measurements, Recurring | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	32,535	16,059
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	324,040	368,160
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	25,470	19,933
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Commercial | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	70,757	77,403
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Commercial | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	31,257	31,052
Fair Value, Measurements, Recurring | Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	27,524	17,329
Fair Value, Measurements, Recurring | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	4,957	4,847
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	14,925	14,920
Fair Value, Measurements, Recurring | Level 1 | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	1,938	1,938
Fair Value, Measurements, Recurring | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	3,913	4,317
Derivative liabilities	1,190	559
Fair Value, Measurements, Recurring | Level 2 | U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	53,219	58,857
Fair Value, Measurements, Recurring | Level 2 | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	31,985	15,509
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	324,040	368,160
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	25,470	19,933
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Commercial | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	70,757	77,403
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Commercial | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	31,257	31,052
Fair Value, Measurements, Recurring | Level 2 | Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	27,524	17,329
Fair Value, Measurements, Recurring | Level 2 | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	2,480	2,379
Fair Value, Measurements, Recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	21,669	21,091
Fair Value, Measurements, Recurring | Level 3 | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	550	550
Fair Value, Measurements, Recurring | Level 3 | Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	$ 539	$ 530

Fair Value Measurement - Summ93

Fair Value Measurement - Summary of Financial Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Investment Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	$ 1,080
Amortization	3
Change in unrealized loss	6
Balance, end of period	1,089
Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	21,091
Additions, net	4,675
Change in fair value	(4,097)
Balance, end of period	$ 21,669

Fair Value Measurement - Summ94

Fair Value Measurement - Summary of Unobservable Inputs Used in Fair Value Measurements on Recurring Basis Categorized Within Level 3 of Fair Value Hierarchy (Details) - Fair Value, Measurements, Recurring - Level 3	9 Months Ended
	Sep. 30, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impact to Valuation from an Increased or Higher Input Value	Decrease
Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique	Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value	Decrease
Single Issuer Trust Preferred
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique	Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value	Decrease
Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Valuation Technique	Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value	Decrease
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate	9.10%
Expected weighted average loan life	4 months 24 days
Minimum | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.00%
Minimum | Single Issuer Trust Preferred
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	7.50%
Minimum | Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speed	1.70%
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate	16.20%
Expected weighted average loan life	11 years 6 months
Maximum | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.40%
Maximum | Single Issuer Trust Preferred
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	9.90%
Maximum | Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speed	9.00%
Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate	12.80%
Expected weighted average loan life	6 years 1 month 7 days
Weighted Average | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.20%
Weighted Average | Single Issuer Trust Preferred
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	8.90%
Weighted Average | Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speed	7.60%

Fair Value Measurement - Summ95

Fair Value Measurement - Summary of Assets Measured at Fair Value on Non-recurring Basis, Excluding Acquired Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 13,742	$ 8,916
Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,772	1,007
Construction, Land Development, and Other Land
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	565
Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	4,490	986
Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,859	16,570
Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	12,938	14,748
Level 3 | Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,742	8,916
Level 3 | Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,772	1,007
Level 3 | Construction, Land Development, and Other Land
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	565
Level 3 | Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	4,490	986
Level 3 | Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,859	16,570
Level 3 | Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 12,938	$ 14,748

Fair Value Measurement - Summ96

Fair Value Measurement - Summary of Valuation Technique, Unobservable Inputs and Qualitative Information of Assets and Liabilities Measured at Fair Value on Non-recurring Basis (Details) - Level 3 - Fair Value Measurements, Non-recurring	9 Months Ended
	Sep. 30, 2017
Impaired Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Valuation Technique	Appraisals
Impact to Valuation from an Increased or Higher Input Value	Decrease
Impaired Loans | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Appraisal adjustments, sales costs and other discount adjsutments for market conditions	6.00%
Impaired Loans | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Appraisal adjustments, sales costs and other discount adjsutments for market conditions	10.00%
Asset Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Valuation Technique	List price, contract price
Appraisal adjustments, sales costs and other discount adjsutments for market conditions	7.00%
Impact to Valuation from an Increased or Higher Input Value	Decrease
Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Valuation Technique	Appraisals
Impact to Valuation from an Increased or Higher Input Value	Decrease
Other Real Estate Owned | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Appraisal adjustments, sales costs and other discount adjsutments for market conditions	7.00%
Other Real Estate Owned | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Appraisal adjustments, sales costs and other discount adjsutments for market conditions	20.00%

Fair Value Measurement - Summ97

Fair Value Measurement - Summary of Estimated Fair Values of Financial Instruments and Levels Within Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets
Cash and due from banks	$ 16,193	$ 17,735
Interest bearing deposits with other banks	46,043	28,798
Securities held-to-maturity, fair value	122,266	138,082
Restricted stock, at cost	10,628	14,993
Loans held for sale	2,087	23,976
Loans and lease receivables, net	2,200,519	2,137,088
Accrued interest receivable	7,183	6,866
Financial liabilities
Line of credit		20,650
Federal Home Loan Bank advances	234,559	313,715
Securities sold under agreements to repurchase	30,807	17,249
Junior subordinated debentures issued to capital trusts, net	27,482	26,926
Carrying Amount | Level 1
Financial assets
Cash and due from banks	16,193	17,735
Carrying Amount | Level 2
Financial assets
Interest bearing deposits with other banks	46,043	28,798
Securities held-to-maturity, fair value	121,453	138,846
Restricted stock, at cost	10,628	14,993
Financial liabilities
Non-interest bearing deposits	753,662	724,457
Interest bearing deposits	1,767,267	1,765,937
Accrued interest payable	1,184	2,427
Line of credit		20,650
Federal Home Loan Bank advances	234,559	313,715
Securities sold under agreements to repurchase	30,807	17,249
Carrying Amount | Level 3
Financial assets
Loans held for sale	2,087	23,976
Loans and lease receivables, net	2,200,519	2,137,088
Accrued interest receivable	7,183	6,866
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	27,482	26,926
Estimated Fair Value | Level 1
Financial assets
Cash and due from banks	16,193	17,735
Estimated Fair Value | Level 2
Financial assets
Interest bearing deposits with other banks	46,043	28,798
Securities held-to-maturity, fair value	122,266	138,082
Restricted stock, at cost	10,628	14,993
Financial liabilities
Non-interest bearing deposits	753,662	724,457
Interest bearing deposits	1,721,537	1,723,941
Accrued interest payable	1,184	2,427
Line of credit		20,650
Federal Home Loan Bank advances	234,543	313,646
Securities sold under agreements to repurchase	30,807	17,249
Estimated Fair Value | Level 3
Financial assets
Loans held for sale	2,335	26,487
Loans and lease receivables, net	2,118,769	2,068,157
Accrued interest receivable	7,183	6,866
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	$ 26,779	$ 26,943

Derivative Instruments and He98

Derivative Instruments and Hedge Activities - Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Notional Amount	$ 331,712,000	$ 151,213,000
Other Assets	3,913,000	4,317,000
Other Liabilities	1,190,000	559,000
Other Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	81,712,000
Other Assets	648,000
Other Liabilities	645,000
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	250,000,000	100,000,000
Other Assets	3,265,000	3,719,000
Other Liabilities	545,000
Derivatives Not Designated As Hedging Instruments | Other Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	81,712,000	51,213,000
Other Assets	648,000	598,000
Other Liabilities	$ 645,000	$ 559,000

Derivative Instruments and He99

Derivative Instruments and Hedge Activities - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivative [Line Items]
Derivative notional amount	$ 331,712,000		$ 331,712,000		$ 151,213,000
Unrealized gain (loss) to be reclassified as an increase to interest expense during the next twelve months	(249,000)		(249,000)
Credit valuation adjustment decrease to non-interest income	(6,000)	$ (14,000)	(36,000)	$ (51,000)
Interest Rate Swaps
Derivative [Line Items]
Interest expense on swap transaction		4,000		4,000
Other Interest Rate Swaps
Derivative [Line Items]
Derivative notional amount	81,712,000		$ 81,712,000
Derivative maturity date, start year			Jan. 31, 2020
Derivative maturity date, end year			Aug. 31, 2027
Derivative instruments transaction fees	40,000	$ 191,000	$ 219,000	$ 580,000
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedges
Derivative [Line Items]
Derivative notional amount	250,000,000		250,000,000		$ 100,000,000
Federal Home Loan Bank Advances | Interest Rate Swaps
Derivative [Line Items]
Interest expense on swap transaction	159,000		426,000
Federal Home Loan Bank Advances | Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedges
Derivative [Line Items]
Derivative notional amount	$ 250,000,000		$ 250,000,000

Derivative Instruments and H100

Derivative Instruments and Hedge Activities - Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations Relating to Cash Flow Derivative Instruments (Details) - Interest Rate Swaps $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Derivative [Line Items]
Amount of Gain Recognized in OCI (Effective Portion)	$ (1,408)
Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense	$ (426)

Derivative Instruments and H101

Derivative Instruments and Hedge Activities - Summary of Other Interest Rate Swaps (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional Amount	$ 331,712,000	$ 151,213,000
Derivative assets fair value	3,913,000	4,317,000
Derivative liabilities fair value	1,190,000	$ 559,000
Other Interest Rate Swaps
Derivative [Line Items]
Notional Amount	81,712,000
Derivative assets fair value	648,000
Derivative liabilities fair value	$ 645,000
Weighted average pay rates	4.26%
Weighted average receive rates	3.68%
Weighted average maturity	6 years 1 month 7 days

Derivative Instruments and H102

Derivative Instruments and Hedge Activities - Summary of Company's Interest Rate Derivative and Offsetting Positions (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative assets fair value	$ 3,913	$ 4,317
Net amount presented in the Consolidated Statements of Financial Condition	3,913
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions	(677)
Collateral posted	(2,949)
Net credit exposure	287
Derivative liabilities fair value	1,190	$ 559
Net amount presented in the Consolidated Statements of Financial Condition	1,190
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions	(677)
Collateral posted	(502)
Net credit exposure	$ 11

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - USD ($)	Oct. 03, 2017	Jul. 06, 2017	Oct. 31, 2017	Oct. 31, 2014	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, voting par value					$ 0.01			$ 0.01
Forfeiture of restricted stock awards, shares		400
Number of common shares available for future grants					1,491,500
Performance Options Grants | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vested	414,894
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock in connection with restricted stock awards, shares		58,900			58,900
Forfeiture of restricted stock awards, shares					400
Common Stock | Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, voting par value		$ 0.01
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common stock reserved and available for issuance								1,550,000
Omnibus Plan | Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares outstanding					58,500,000
Shares of restricted voting common stock granted					58,900,000
Omnibus Plan | Common Stock | Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares vested					0
Restricted shares outstanding						0
Omnibus Plan | Common Stock | Restricted Shares | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, voting par value			$ 0.01
Shares of restricted voting common stock granted			7,500
Award vesting period			4 years
MBG Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options granted						0
Number of options exercised						0
BYB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common shares available for future grants								0
Number of options granted					0	212,400	1,634,568
Number of options exercised					0
Award contractual term					7 years 10 months 25 days	9 years 9 months 18 days
Fair value of stock options vested					$ 477,000
BYB Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common shares available for future grants				2,476,122
BYB Plan | Time Options Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award contractual term				10 years
BYB Plan | Time Options Grants | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period				5 years
BYB Plan | Time Options Grants | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period				1 year
BYB Plan | Performance Options Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award contractual term				10 years
BYB Plan | Performance Options Grants | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period				5 years
BYB Plan | Performance Options Grants | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period				1 year

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Changes in Restricted Shares (Details) - Omnibus Plan - Restricted Shares shares in Thousands	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, beginning balance | shares
Number of shares, granted | shares	58,900
Number of shares, forfeited | shares	(400)
Number of shares, ending balance | shares	58,500
Weighted average grant date fair value, beginning balance | $ / shares
Weighted average grant date fair value, granted | $ / shares	$ 20.18
Weighted average grant date fair value, forfeited | $ / shares	20.18
Weighted average grant date fair value, ending balance | $ / shares	$ 20.18

Share-Based Compensation - S105

Share-Based Compensation - Summary of Stock Compensation Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 857	$ 553
Income tax benefit	348
Unrecognized compensation expense	$ 1,074	$ 1,431
Weighted-average amortization period remaining	1 year 2 months 13 days	2 years
Restricted Shares
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 94
Income tax benefit	38
Unrecognized compensation expense	$ 1,087
Weighted-average amortization period remaining	2 years 9 months 19 days

Share-Based Compensation - Fair

Share-Based Compensation - Fair Value Assumptions of Stock Options (Details) - BYB Plan - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Time Options Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate, minimum		1.34%	1.68%
Risk-free interest rate, maximum		1.40%	1.85%
Expected stock price volatility		20.39%
Expected stock price volatility, minimum			16.18%
Expected stock price volatility, maximum			16.55%
Expected dividend yield		0.00%	0.00%
Weighted average grant date fair value		$ 3.55	$ 2.25
Time Options Grants | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (years)		5 years 2 months 12 days	5 years 8 months 12 days
Time Options Grants | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (years)		5 years 7 months 6 days	6 years 3 months 19 days
Performance Options Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	FY 2016 and FY 2015; Implied forward rates
Expected term (years)	FY 2016 and FY 2015; Variable
Expected stock price volatility, minimum		20.34%	16.18%
Expected stock price volatility, maximum		20.39%	16.55%
Expected dividend yield		0.00%	0.00%
Weighted average grant date fair value		$ 3.75	$ 1.65

Share-Based Compensation - S107

Share-Based Compensation - Summary Activity in shares Subjected to Options and Weighted Average Exercise Prices (Details) - BYB Plan - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, beginning balance	1,798,220
Number of shares, granted	0	212,400	1,634,568
Number of shares, exercised	0
Number of shares, ending balance	1,798,220	1,798,220
Number of shares, exercisable	835,263
Weighted average exercise price, beginning balance	$ 11.95
Weighted average exercise price, ending balance	11.95	$ 11.95
Weighted average exercise price, exercisable	$ 11.31
Intrinsic value, balance	$ 16,545	$ 15,788
Intrinsic value, exercisable	$ 8,310
Weighted average remaining contractual life (in years)	7 years 10 months 25 days	9 years 9 months 18 days
Weighted average remaining contractual life (in years), exercisable	7 years 8 months 12 days

Earnings per Share - Additional

Earnings per Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share Basic [Line Items]
Shares outstanding	29,246,900	19,497,811	26,194,025	18,838,354
Stock Options
Earnings Per Share Basic [Line Items]
Shares outstanding			1,798,223	1,798,223
Restricted Stock Award
Earnings Per Share Basic [Line Items]
Shares outstanding			58,500	0

Earnings per Share - Schedule o

Earnings per Share - Schedule of Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income	$ 9,755	$ 1,565	$ 22,461	$ 2,814
Dividends on preferred shares	195		11,081
Net income available to common stockholders	$ 9,560	$ 1,565	$ 11,380	$ 2,814
Weighted-average common stock outstanding:
Weighted average common shares outstanding for basic earnings per common share	29,246,900	19,497,811	26,194,025	18,838,354
Incremental shares	505,431	265,623	503,816	265,623
Weighted-average common stock outstanding (dilutive)	29,752,331	19,763,434	26,697,841	19,103,977
Basic earnings per common share	$ 0.33	$ 0.08	$ 0.43	$ 0.15
Diluted earnings per common share	$ 0.32	$ 0.08	$ 0.43	$ 0.15

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Preferred and Common Stock (Details) - $ / shares	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Common stock, voting par value	$ 0.01	$ 0.01
Common stock, voting shares authorized	150,000,000		150,000,000
Common stock, voting shares issued	29,305,400		24,616,706
Common stock, voting shares outstanding	29,305,400		24,616,706
Series A Non-cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Par value	$ 0.01		$ 0.01
Shares authorized	15,003		15,003
Shares issued			15,003
Shares outstanding			15,003
Series B 7.5% Fixed Non-Cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Par value	$ 0.01		$ 0.01
Shares authorized	50,000		50,000
Shares issued	10,438		9,388
Subscription receivable			1,050
Shares outstanding	10,438		9,388

Stockholders' Equity - Summa111

Stockholders' Equity - Summary of Preferred and Common Stock (Parenthetical) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Series B 7.5% Fixed Non-Cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	7.50%	7.50%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details)	Jul. 14, 2017USD ($)	Jul. 06, 2017USD ($)	Jun. 16, 2017$ / sharesshares	Jun. 14, 2017shares	Jun. 30, 2017$ / sharesshares	Sep. 30, 2017USD ($)$ / sharesshares	Sep. 30, 2016USD ($)shares	Dec. 31, 2016$ / shares	Jan. 30, 2017shares
Class Of Stock [Line Items]
Dividends declared and paid						$ 11,081,000
Common stock, par value | $ / shares					$ 0.01	$ 0.01
Proceeds from issuance of common stock		$ 82,700,000				$ 76,829,000	$ 50,018,000
Merger transaction, the number of shares into which each share of common stock issued and outstanding prior to merger was converted				0.20
Merger transaction, number of fractional shares issued | shares				0
Repurchase of shares						$ 15,003,000
Common Stock
Class Of Stock [Line Items]
Issuance of common stock, net of issuance cost, shares | shares					4,630,194	4,630,194	3,078,075
Issuance of common stock, price per share | $ / shares			$ 19
Under Writer | Common Stock
Class Of Stock [Line Items]
Issuance of common stock, net of issuance cost, shares | shares					855,000
Issuance of common stock, price per share | $ / shares					$ 19
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage								7.50%
Preferred stock, liquidation preference per share | $ / shares								$ 1,000
Preferred stock, shares issued | shares									1,050
Dividends declared and paid						$ 580,000
Series A Preferred Stock
Class Of Stock [Line Items]
Preferred stock, liquidation preference per share | $ / shares			$ 1,000
Shares of common stock used to determine cash value of repurchase | shares			89.469
Repurchase of shares	$ 25,500,000
Dividends Payable						$ 10,500,000