10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______to ______

Commission File Number 001-38139

Byline Bancorp, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	36-3012593
(State or Other Jurisdiction of Incorporation or Organization)	(IRS Employer Identification Number)

180 North LaSalle Street, Suite 300

Chicago, Illinois 60601

(Address of Principal Executive Offices)

(773) 244-7000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Securities Exchange Act of 1934.

Large accelerated filer	☐		Accelerated filer	☐
Non-accelerated filer	☒	(Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐No ☒Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Common Stock, $0.01 par value, 29,460,991 shares outstanding as of May 10, 2018

BYLINE BANCORP, INC.

FORM 10-Q

March 31, 2018

INDEX

		Page
PART I.	FINANCIAL INFORMATION	3
Item 1.	Financial Statements. The Interim Condensed Consolidated Financial Statements of Byline Bancorp, Inc. filed as part of the report are as follows:	3
	Consolidated Statements of Financial Condition at March 31, 2018 (unaudited) and December 31, 2017	3
	Consolidated Statements of Operations for the Three Months Ended March 31, 2018 and 2017 (unaudited)	4
	Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2018 and 2017 (unaudited)	5
	Consolidated Statements of Changes in Stockholders’ Equity for the Three Months Ended March 31, 2018 and 2017 (unaudited)	6
	Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2018 and 2017 (unaudited)	7
	Notes to Unaudited Interim Condensed Consolidated Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	46
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	80
Item 4.	Controls and Procedures	82
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	82
Item 1A.	Risk Factors	82
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	82
Item 3.	Defaults Upon Senior Securities	82
Item 4.	Mine Safety Disclosures	82
Item 5.	Other Information	82
Item 6.	Exhibits	83

2

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION

	(Unaudited)
(dollars in thousands, except share and per share data)	March 31, 2018			December 31, 2017
ASSETS
Cash and due from banks	$	17,396		$	19,404
Interest bearing deposits with other banks		110,645			38,945
Cash and cash equivalents		128,041			58,349
Securities available-for-sale, at fair value		626,057			583,236
Securities held-to-maturity, at amortized cost (fair value    March 31, 2018—$110,419, December 31, 2017—$117,277)		112,266			117,163
Restricted stock, at cost		17,177			16,343
Loans held for sale		8,219			5,212
Loans and leases:
Loans and leases		2,280,418			2,277,492
Allowance for loan and lease losses		(17,640	)		(16,706	)
Net loans and leases		2,262,778			2,260,786
Servicing assets, at fair value		21,615			21,400
Accrued interest receivable		6,971			7,670
Premises and equipment, net		94,014			95,224
Assets held for sale		9,030			9,779
Other real estate owned, net		10,466			10,626
Goodwill		54,562			54,562
Other intangible assets, net		15,991			16,756
Bank-owned life insurance		5,838			5,718
Deferred tax assets, net		47,371			47,376
Due from counterparty		19,987			39,824
Other assets		21,989			16,106
Total assets	$	3,462,372		$	3,366,130
LIABILITIES AND STOCKHOLDERS’ EQUITY
LIABILITIES
Non-interest bearing demand deposits	$	749,892		$	760,887
Interest bearing deposits:
NOW, savings accounts, and money market accounts		1,018,361			973,685
Time deposits		756,294			708,757
Total deposits		2,524,547			2,443,329
Accrued interest payable		1,612			1,306
Line of credit		—			—
Federal Home Loan Bank advances		380,000			361,506
Securities sold under agreements to repurchase		27,815			31,187
Junior subordinated debentures issued to capital trusts, net		27,800			27,647
Accrued expenses and other liabilities		37,662			42,577
Total liabilities		2,999,436			2,907,552
STOCKHOLDERS’ EQUITY
Preferred stock		10,438			10,438
Common stock, voting $0.01 par value at March 31, 2018 and December 31, 2017; 150,000,000 shares authorized at March 31, 2018 and December 31, 2017; 29,404,048 shares issued and outstanding at March 31, 2018 and 29,317,298 issued and outstanding at December 31, 2017		293			292
Additional paid-in capital		392,932			391,586
Retained earnings		68,687			61,349
Accumulated other comprehensive loss, net of tax		(9,414	)		(5,087	)
Total stockholders’ equity		462,936			458,578
Total liabilities and stockholders’ equity	$	3,462,372		$	3,366,130

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

3

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(UNAUDITED)

	Three Months Ended
	March 31,
(dollars in thousands, except share and per share data)	2018			2017
INTEREST AND DIVIDEND INCOME
Interest and fees on loans and leases	$	33,654		$	28,396
Interest on taxable securities		4,055			3,790
Interest on tax-exempt securities		174			133
Other interest and dividend income		259			169
Total interest and dividend income		38,142			32,488
INTEREST EXPENSE
Deposits		2,498			1,483
Federal Home Loan Bank advances		1,358			660
Subordinated debentures and other borrowings		591			807
Total interest expense		4,447			2,950
Net interest income		33,695			29,538
PROVISION FOR LOAN AND LEASE LOSSES		5,115			1,891
Net interest income after provision for loan and lease losses		28,580			27,647
NON-INTEREST INCOME
Fees and service charges on deposits		1,312			1,219
Net servicing fees		563			919
ATM and interchange fees		1,218			1,348
Net gains on sales of securities available-for-sale		—			8
Net gains on sales of loans		7,476			8,082
Other non-interest income		859			732
Total non-interest income		11,428			12,308
NON-INTEREST EXPENSE
Salaries and employee benefits		18,278			16,602
Occupancy expense, net		3,755			3,739
Equipment expense		603			563
Loan and lease related expenses		1,400			877
Legal, audit and other professional fees		1,851			1,671
Data processing		2,301			2,409
Net gain recognized on other real estate owned and other related expenses		(1	)		(570	)
Regulatory assessments		241			184
Other intangible assets amortization expense		767			769
Advertising and promotions		249			289
Telecommunications		418			418
Other non-interest expense		2,057			1,900
Total non-interest expense		31,919			28,851
INCOME BEFORE PROVISION FOR INCOME TAXES		8,089			11,104
PROVISION FOR INCOME TAXES		1,321			4,544
NET INCOME		6,768			6,560
Dividends on preferred shares		193			189
INCOME AVAILABLE TO COMMON STOCKHOLDERS	$	6,575		$	6,371
EARNINGS PER COMMON SHARE
Basic	$	0.22		$	0.26
Diluted	$	0.22		$	0.25

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

4

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(UNAUDITED)

	Three Months Ended
	March 31,
(dollars in thousands)	2018			2017
Net income	$	6,768		$	6,560
Securities available-for-sale
Unrealized holding (losses) gains arising during the period		(8,852	)		1,020
Reclassification adjustments for net gains included in net income		—			(8	)
Tax effect		2,395			(626	)
Net of tax		(6,457	)		386
Cash flow hedges
Unrealized holding gains arising during the period		4,070			(83	)
Reclassification adjustments for (losses) gains included in net income		(61	)		54
Tax effect		(1,116	)		11
Net of tax		2,893			(18	)
Total other comprehensive income (loss)		(3,564	)		368
Comprehensive income	$	3,204		$	6,928

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

5

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

Three Months Ended March 31, 2018 and 2017

(Unaudited)

									Additional					Accumulated Other			Total
	Preferred Stock				Common Stock				Paid-In					Comprehensive			Stockholders’
(dollarsin thousands, except share data)	Shares		Amount		Shares		Amount		Capital		Retained Earnings			Income (Loss)			Equity
Balance, January 1, 2017		25,441	$	25,441		24,616,706	$	—	$	313,552	$	50,933		$	(7,268	)	$	382,658
Net income		—		—		—		—		—		6,560			—			6,560
Other comprehensive income,    net of tax		—		—		—		—		—		—			368			368
Cash dividends declared on    preferred stock		—		—		—		—		—		(189	)		—			(189	)
Share-based compensation expense		—		—		—		—		286		—			—			286
Balance, March 31, 2017		25,441	$	25,441		24,616,706	$	—	$	313,838	$	57,304		$	(6,900	)	$	389,683
Balance, January 1, 2018		10,438	$	10,438		29,317,298	$	292	$	391,586	$	61,349		$	(5,087	)	$	458,578
Net income		—		—		—		—		—		6,768			—			6,768
Other comprehensive loss,    net of tax		—		—		—		—		—		—			(3,564	)		(3,564	)
Issuance of common stock upon    exercise of stock options		—		—		86,750		1		1,004		—			—			1,005
Reclassification of certain income    tax effects from accumulated    other comprehensive income		—		—		—		—		—		763			(763	)		—
Cash dividends declared on    preferred stock		—		—		—		—		—		(193	)		—			(193	)
Share-based compensation expense		—		—		—		—		342		—			—			342
Balance, March 31, 2018		10,438	$	10,438		29,404,048	$	293	$	392,932	$	68,687		$	(9,414	)	$	462,936

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

6

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

Three Months Ended March 31, 2018 and 2017

(Unaudited)

	March 31,
(dollars in thousands)	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	6,768		$	6,560
Adjustments to reconcile net income to net cash from operating activities:
Provision for loan and lease losses		5,115			1,891
Depreciation and amortization of premises and equipment		1,273			1,298
Net amortization of securities		1,009			1,184
Net gains on sales of securities available-for-sale		—			(8	)
Net gains on sales of assets held for sale		(189	)		(162	)
Net gains on sales of loans		(7,476	)		(8,082	)
Originations of government guaranteed loans		(82,125	)		(61,918	)
Proceeds from government guaranteed loans sold		104,604			70,410
Accretion of premiums and discounts on acquired loans, net		(7,258	)		(7,955	)
Net change in servicing assets		(215	)		(132	)
Net valuation adjustments on other real estate owned		81			276
Net gains on sales of other real estate owned		(64	)		(1,228	)
Amortization of intangible assets		767			769
Amortization of time deposit premium		(5	)		(463	)
Amortization of Federal Home Loan Bank advances premium		(19	)		(52	)
Accretion of junior subordinated debentures discount		153			204
Share-based compensation expense		342			286
Deferred tax provision		1,284			4,220
Increase in cash surrender value of bank owned life insurance		(120	)		(119	)
Changes in assets and liabilities:
Accrued interest receivable		673			(666	)
Other assets		622			739
Accrued interest payable		306			(534	)
Accrued expenses and other liabilities		4,944			(1,418	)
Net cash provided by operating activities		30,470			5,100
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of securities available-for-sale		(72,646	)		(745	)
Proceeds from maturities and calls of securities available-for-sale		5,430			1,182
Proceeds from paydowns of securities available-for-sale		14,691			17,718
Proceeds from sales of securities available-for-sale		—			8
Proceeds from paydowns of securities held-to-maturity		4,050			5,337
Purchases of Federal Home Loan Bank stock		(6,282	)		(2,610	)
Federal Home Loan Bank stock repurchases		5,448			8,100
Proceeds from other loans sold		—			9,984
Net change in loans and leases		(10,723	)		(9,412	)
Purchases of premises and equipment		(63	)		(797	)
Proceeds from sales of assets held for sale		954			2,752
Proceeds from sales of other real estate owned		1,187			5,157
Net cash (used in) provided by investing activities		(57,954	)		36,674

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

7

BYLINE BANCORP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

Three Months Ended March 31, 2018 and 2017

(Unaudited)

	March 31,
(dollars in thousands)	2018			2017
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	$	81,223		$	85,908
Proceeds from Federal Home Loan Bank advances		1,589,900			825,000
Repayments of Federal Home Loan Bank advances		(1,571,387	)		(929,000	)
Repayments of line of credit		—			(2,500	)
Net (decrease) increase in securities sold under agreements to repurchase		(3,372	)		14,691
Dividends paid on preferred stock		(193	)		(189	)
Proceeds from issuance of common stock upon exercise of stock options		1,005			—
Proceeds from issuance of preferred stock		—			1,050
Net cash provided by (used in) financing activities		97,176			(5,040	)
NET INCREASE IN CASH AND CASH EQUIVALENTS		69,692			36,734
CASH AND CASH EQUIVALENTS, beginning of period		58,349			46,533
CASH AND CASH EQUIVALENTS, end of period	$	128,041		$	83,267
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	$	4,012		$	3,795
Cash payments during the period for taxes	$	63		$	832
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND    FINANCING ACTIVITIES:
Change in fair value of available-for-sale securities, net of tax	$	(6,457	)	$	386
Change in fair value of cash flow hedges, net of tax	$	2,893		$	(18	)
Delayed payments of mortgage-backed securities	$	726		$	372
Change in due to broker	$	9,838		$	(9,978	)
Transfers of loans to loans held for sale	$	—		$	10,061
Transfers of loans to other real estate owned	$	1,044		$	808
Transfers of land and premises to assets held for sale	$	—		$	1,508
Transfers of premises and equipment to other assets	$	—		$	502
Transfers of other assets to assets held for sale	$	16		$	—

See accompanying Notes to Unaudited Interim Condensed Consolidated Financial Statements.

8

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 1—Basis of Presentation

These unaudited interim condensed consolidated financial statements include the accounts of BylineBancorp, Inc., a Delaware corporation(the“Company,”“we,” “us,”“our”),a bank holding companywhose principalactivityistheownershipand managementof its Illinois state chartered subsidiarybank, BylineBank (the “Bank”), based in Chicago, Illinois.

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 March 31, 2018 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, 2017, 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.

During the three months ended March 31, 2018, we revised our previously issued 2017 consolidated financial statements to properly record a deferred tax liability associated with the bad debt recapture assumed from the acquisition of Ridgestone Financial Services, Inc. (“Ridgestone”) and its subsidiaries on October 14, 2016. The acquisition of Ridgestone was accounted for using the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. 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. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017.

We evaluated the effect of the error to our previously issued consolidated financial statements in accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 99 and No. 108,  and, based upon quantitative and qualitative factors, determined that the error was not material to our previously issued consolidated financial statements. Accordingly, we have reflected the change in 2017 and revised our Consolidated Statements of Financial Condition disclosed herein. Consolidated financial statements for periods not presented herein will be revised, as applicable, as they are included in future filings.

All financial information presented in the accompanying notes to these consolidated financial statements was revised to reflect the change. The change did not affect net income or stockholders’ equity for the periods impacted.

9

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The following table presents the effect of the aforementioned revisions to our Consolidated Statements of Financial Condition as of December 31, 2017:

	December 31, 2017
	(dollars in thousands)
	As Reported		Adjustment			As Revised
Goodwill	$	51,975	$	2,587		$	54,562
Deferred tax assets, net		49,963		(2,587	)		47,376
Total assets		3,366,130		—			3,366,130

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 Topics 606 and 610 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, amending ASC Topic 606, Revenue from Contracts with Customers. The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU affect only several narrow aspects of Topic 606. 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. 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.

10

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

In November 2017, FASB issued ASU No. 2017-14, amending ASC Topic 606, Revenue from Contracts with Customers. The ASU amends the codification to incorporate additional previously issued guidance from the SEC. The SEC issued SAB 116 to bring existing SEC staff guidance into conformity with the FASB’s adoption of and amendments to ASC Topic 606, Revenue from Contracts with Customers. The SAB modified SAB Topic 13, Revenue Recognition. ASU 2017-14 supersedes various SEC paragraphs and amends an SEC paragraph pursuant to the issuance of SAB 116. 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.

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.

In March 2018, FASB issued ASU No. 2018-03, Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU clarifies the guidance in ASU No. 2016-01. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years beginning after June 15, 2018. The Company is currently evaluating the provisions of ASU No. 2018-03 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 a lessee.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Derivatives and Hedging (Topic 815)In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities. The amendments in this ASU better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The new authoritative guidance will be effective for reporting periods after January 1, 2019 with early adoption permitted. The Company is evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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. The amendments in the ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all of the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) or the modified ward is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified.  If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified. (3) The classification of the modified award is an equity instrument or liability instrument is the same as the classification of the original award immediately before the original award is modified.  The amendments are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. The amendments should be applied prospectively to an award modified on or after the adoption date. 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 evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

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. The ASU will require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this update apply to all entities that have restricted cash or restricted cash equivalents and are required to present a statement of cash flows under Topic 230. Theamendment 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.

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.

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

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BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

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 early adopted these amendments in 2017, which did not have 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.

Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815) In July 2017, FASB issued ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception. The ASU simplifies the accounting for certain financial instruments with down round features, a provision in an equity-linked financial instrument (or embedded feature) that provides a downward adjustment of the current exercise price based on the price of future equity offerings. Down round features are common in warrants, convertible preferred shares, and convertible debt instruments. The ASU requires companies to disregard the down round feature when assessing whether the instrument is indexed to its own stock, for purposes of determining liability or equity classification. Companies that provide earnings per share (EPS) data will adjust their basic EPS calculation for the effect of the feature when triggered (i.e., when the exercise price of the related equity-linked financial instrument is adjusted downward because of the down round feature) and will also recognize the effect of the trigger within equity. 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. 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. 2017‑11 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Income Statement—Reporting Comprehensive Income (Topic 220) In February 2018, FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The ASU helps organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act. The ASU provides reporting entities with an option to reclassify stranded tax effects within AOCI

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The ASU requires reporting entities to disclose: a description of the accounting policy for releasing income tax effects from AOCI; whether they elect to reclassify the stranded income tax effects from the Tax Cuts and Jobs Act; and information about the other income tax effects that are reclassified. The amendments affect any organization that is required to apply the provisions of Topic 220, Income Statement—Reporting Comprehensive Income, and has items of other comprehensive income for which the related tax effects are presented in other comprehensive income as required by GAAP. The amendments are effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company early adopted the new guidance on January 1, 2018. The adoption did not impact the Company’s Statements of Operations, and resulted in a reclassification of $763,000 from accumulated other comprehensive income to retained earnings.

Financial Services—Depository and Lending (Topic 942) In May 2018, FASB issued ASU No. 2018-06, Codification Improvements to Topic 942, Depository and Lending—Income Taxes. The amendments in this ASU supersede the guidance within Subtopic 942-741 that has been rescinded by the OCC and no longer relevant. A cross-reference between Subtopic 740-30, Income Taxes—Other Considerations or Special Areas,and Subtopic 942-740 is being added to the remaining guidance in Subtopic 740-30 to improve the usefulness of the codification. The amendments in this Update are effective upon issuance, as no accounting requirements are affected. The amendments in this ASU do not have a material impact on the Company’s Consolidated Financial Statements.

Note 3—Acquisitionof a Business

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 $28.9 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 $1.6  million are reflected in non-interest expense on the Consolidated Statements of Operations. 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. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

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		5,641
Total assets acquired		453,566
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	$	76,126
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	$	28,874

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 operating results of the Company include the operating results produced by the acquired assets and assumed liabilities of Ridgestone for periods from January 1, 2017 through March 31, 2017 and January 1, 2018 through March 31, 2018. 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.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 4—Securities

The followingtablessummarizetheamortizedcostand fairvaluesof securitiesavailable-for-saleand securitiesheld-to-maturityas of the dates shown and thecorrespondingamountsof grossunrealized gainsand losses:

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	22,934	$	2	$	(195	)	$	22,741
U.S. Government agencies		64,293		46		(1,718	)		62,621
Obligations of states, municipalities, and political    subdivisions		32,876		21		(749	)		32,148
Residential mortgage-backed securities
Agency		321,957		—		(12,907	)		309,050
Non-agency		55,341		—		(1,067	)		54,274
Commercial mortgage-backed securities
Agency		76,866		76		(2,815	)		74,127
Non-agency		31,688		—		(1,344	)		30,344
Corporate securities		35,257		315		(209	)		35,363
Other securities		3,628		1,875		(114	)		5,389
Total	$	644,840	$	2,335	$	(21,118	)	$	626,057

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	23,982	$	44	$	(335	)	$	23,691
Residential mortgage-backed securities
Agency		49,946		—		(822	)		49,124
Non-agency		38,338		—		(734	)		37,604
Total	$	112,266	$	44	$	(1,891	)	$	110,419

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	14,999	$	—	$	(136	)	$	14,863
U.S. Government agencies		54,248		—		(1,290	)		52,958
Obligations of states, municipalities, and political    subdivisions		33,405		100		(335	)		33,170
Residential mortgage-backed securities
Agency		315,103		—		(7,646	)		307,457
Non-agency		39,485		104		(75	)		39,514
Commercial mortgage-backed securities
Agency		70,964		45		(1,966	)		69,043
Non-agency		31,763		—		(792	)		30,971
Corporate securities		29,573		507		(104	)		29,976
Other securities		3,627		1,730		(73	)		5,284
Total	$	593,167	$	2,486	$	(12,417	)	$	583,236

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	24,030	$	197	$	(82	)	$	24,145
Residential mortgage-backed securities
Agency		53,731		79		(203	)		53,607
Non-agency		39,402		174		(51	)		39,525
Total	$	117,163	$	450	$	(336	)	$	117,277

The Company did not classify securities as trading during the three months ended March 31, 2018 or during 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 March 31, 2018 and December 31, 2017 are summarized as follows:

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		6	$	9,954	$	(12	)	$	9,817	$	(183	)	$	19,771	$	(195	)
U.S. Government agencies		9		989		(10	)		51,558		(1,708	)		52,547		(1,718	)
Obligations of states, municipalities and    political subdivisions		36		22,418		(475	)		4,374		(274	)		26,792		(749	)
Residential mortgage-backed securities
Agency		43		33,601		(598	)		275,450		(12,309	)		309,051		(12,907	)
Non-agency		6		49,937		(885	)		4,337		(182	)		54,274		(1,067	)
Commercial mortgage-backed securities
Agency		8		7,228		(24	)		55,306		(2,791	)		62,534		(2,815	)
Non-agency		5		—		—			30,344		(1,344	)		30,344		(1,344	)
Corporate securities		6		8,438		(131	)		2,434		(78	)		10,872		(209	)
Other securities		1		—		—			1,880		(114	)		1,880		(114	)
Total		120	$	132,565	$	(2,135	)	$	435,500	$	(18,983	)	$	568,065	$	(21,118	)

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Held-to-maturity
Obligations of states, municipalities, and    political subdivisions		24	$	15,870	$	(286	)	$	1,539	$	(49	)	$	17,409	$	(335	)
Residential mortgage-backed securities
Agency		20		42,065		(572	)		7,060		(250	)		49,125		(822	)
Non-agency		7		33,441		(591	)		4,162		(143	)		37,603		(734	)
Total		51	$	91,376	$	(1,449	)	$	12,761	$	(442	)	$	104,137	$	(1,891	)

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BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

			Less than 12 Months					12 Months or Longer					Total
December 31, 2017	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		5	$	4,998	$	(2	)	$	9,865	$	(134	)	$	14,863	$	(136	)
U.S. Government agencies		9		992		(7	)		51,966		(1,283	)		52,958		(1,290	)
Obligations of states, municipalities and    political subdivisions		29		16,059		(137	)		4,453		(198	)		20,512		(335	)
Residential mortgage-backed securities
Agency		41		15,441		(181	)		292,016		(7,465	)		307,457		(7,646	)
Non-agency		1		—		—			4,565		(75	)		4,565		(75	)
Commercial mortgage-backed securities
Agency		7		—		—			57,442		(1,966	)		57,442		(1,966	)
Non-agency		5		—		—			30,971		(792	)		30,971		(792	)
Corporate securities		3		2,406		(80	)		2,489		(24	)		4,895		(104	)
Other securities		1		—		—			1,921		(73	)		1,921		(73	)
Total		101	$	39,896	$	(407	)	$	455,688	$	(12,010	)	$	495,584	$	(12,417	)

			Less than 12 Months					12 Months or Longer					Total
December 31, 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		12	$	7,409	$	(38	)	$	1,548	$	(44	)	$	8,957	$	(82	)
Residential mortgage-backed securities
Agency		13		24,344		(107	)		7,935		(96	)		32,279		(203	)
Non-agency		3		10,458		(10	)		4,382		(41	)		14,840		(51	)
Total		28	$	42,211	$	(155	)	$	13,865	$	(181	)	$	56,076	$	(336	)

Certainsecuritieshave fairvalueslessthanamortizedcostand, therefore,containunrealizedlosses.At March 31, 2018, theCompany evaluatedthesecuritieswhich had an unrealizedlossfor other than temporary impairment and determined alldeclinesin valueto be temporary.Therewere 120 securities available-for-sale with unrealizedlossesat March 31, 2018. There were 51 securities held-to-maturity with unrealizedlossesat March 31, 2018.The Company anticipatesfullrecoveryof amortizedcostwith respectto thesesecuritiesby maturity,or sooner,in theeventof a morefavorablemarketinterestrate environment.The Company does not intendto sellthesesecuritiesand itisnot morelikelythannot thatthe Company willbe requiredto sellthembeforerecoveryof theiramortizedcostbasis,which maybe atmaturity.

The proceedsfromallsalesof securitiesavailable-for-sale,and theassociatedgainsand lossesfor the three months ended March 31, 2018 and 2017 arelistedbelow:

	For the Three Months Ended
	March 31,
	2018		2017
Proceeds	$	—	$	8
Gross gains		—		8
Gross losses		—		—

There were no gains or losses reclassified fromaccumulatedothercomprehensive income (loss)intoearningsforthe three months ended March 31, 2018 and$8,000 for the three months ended March 31, 2017.

19

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Securities pledged at March 31, 2018 and December 31, 2017 had carrying amounts of $348.6 million and $262.5 million,respectively.At March 31, 2018 and December 31, 2017, of thosepledged,thecarryingamountsof securitiespledgedas collateralforpublicfund depositswere $160.3 million and $99.3 million,respectively, and forcustomerrepurchaseagreementsof $32.9 million and $34.8 million,respectively.At March 31, 2018 and December 31, 2017, securities pledged for advances from the Federal Home Loan Bank were $155.5 million and $128.4 million, respectively. Othersecuritieswere pledgedforpurposesrequiredor permittedby law. At March 31, 2018 and December 31, 2017, therewere no holdingsof securitiesof any one issuer,otherthantheU.S.Governmentand itsagencies,in an amountgreaterthan10% of stockholders’ equity.

At March 31, 2018, theamortizedcostand fairvalueof debtsecuritiesareshown by contractual maturity.Expectedmaturitiesmaydifferfromcontractualmaturitiesifborrowershave therightto callor prepay obligationswith or withoutcallor prepaymentpenalties.Securitiesnot due ata singlematuritydateareshown separately.

	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	5,695	$	5,689
Due from one to five years		88,763		87,589
Due from five to ten years		47,396		46,274
Due after ten years		14,042		14,013
Mortgage-backed securities		485,852		467,795
Other securities with no defined maturity		3,092		4,697
Total	$	644,840	$	626,057
Held-to-maturity
Due from one to five years	$	3,523	$	3,500
Due from five to ten years		11,706		11,523
Due after ten years		8,753		8,668
Mortgage-backed securities		88,284		86,728
Total	$	112,266	$	110,419

Note 5—Loanand Lease Receivables

Outstanding loan and lease receivables as of the dates shown were categorized as follows:

	March 31,			December 31,
	2018			2017
Commercial real estate	$	840,958		$	891,971
Residential real estate		568,030			577,123
Construction, land development, and other land		117,597			105,996
Commercial and industrial		569,647			522,254
Installment and other		4,082			4,182
Lease financing receivables		177,932			174,165
Total loans and leases		2,278,246			2,275,691
Net unamortized deferred fees and costs		(1,357	)		(1,720	)
Initial direct costs		3,529			3,521
Allowance for loan and lease losses		(17,640	)		(16,706	)
Net loans and leases	$	2,262,778		$	2,260,786

20

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

	March 31,			December 31,
	2018			2017
Lease financing receivables
Net minimum lease payments	$	193,146		$	188,986
Unguaranteed residual values		1,613			1,644
Unearned income		(16,827	)		(16,465	)
Total lease financing receivables		177,932			174,165
Initial direct costs		3,529			3,521
Lease financial receivables before allowance for    lease losses	$	181,461		$	177,686

Total loans and leases consist of originated loans and leases, acquired impaired loans and acquired non-impaired loans and leases. At March 31, 2018 and December 31, 2017, total loans and leases included the guaranteed amount of U.S. Government guaranteed loans of $73.2 million and $77.0 million, respectively. At March 31, 2018 and December 31, 2017, installment and other loans included overdraft deposits of $467,000 and $617,000, respectively, which were reclassified as loans. At March 31, 2018 and December 31, 2017, loans and loans held for sale pledged as security for borrowings were $530.0 million and $516.9 million, respectively.

The minimumannualleasepaymentsforleasefinancingreceivablesas of March 31, 2018 are summarizedas follows:

	Minimum Lease Payments
2018	$	51,913
2019		58,980
2020		42,897
2021		25,541
2022		12,131
Thereafter		1,684
Total	$	193,146

Originatedloansand leasesrepresent loan originations or purchasesother than those froma businesscombination.Acquiredimpaired loansareloansacquiredfroma businesscombinationwith evidenceof creditqualitydeteriorationand are accountedforunderASC Topic 310-30. Acquirednon-impairedloansand leasesrepresentloansand leasesacquired froma businesscombinationwithoutevidenceof creditqualitydeteriorationand areaccountedforunderASC Topic 310-20. Leasesand revolvingloansdo not qualifyto be accountedforas acquiredimpairedloansand are accountedforunderASC Topic 310-20. The followingtablessummarizethebalancesforeachrespectiveloanand leasecategoryas of March 31, 2018 and December 31, 2017:

March 31, 2018	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	485,324	$	157,956	$	197,589	$	840,869
Residential real estate		397,516		139,858		30,785		568,159
Construction, land development, and other land		110,092		5,156		1,822		117,070
Commercial and industrial		470,689		8,055		89,985		568,729
Installment and other		3,645		449		36		4,130
Lease financing receivables		151,468		—		29,993		181,461
Total loans and leases	$	1,618,734	$	311,474	$	350,210	$	2,280,418

21

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

December 31, 2017	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	513,622	$	166,712	$	211,359	$	891,693
Residential real estate		400,571		144,562		32,085		577,218
Construction, land development, and other land		97,638		5,946		1,845		105,429
Commercial and industrial		416,499		10,008		94,731		521,238
Installment and other		3,724		462		42		4,228
Lease financing receivables		141,329		—		36,357		177,686
Total loans and leases	$	1,573,383	$	327,690	$	376,419	$	2,277,492

The outstandingbalanceand carryingamountof allacquiredimpairedloansaresummarizedbelow. The balancesdo not includean allowanceforloanand leaselossesof $3.5 million and $3.9 million,at March 31, 2018 and December 31, 2017, respectively.

	March 31, 2018				December 31, 2017
	Outstanding Balance		Carrying Value		Outstanding Balance		Carrying Value
Commercial real estate	$	227,322	$	157,956	$	235,898	$	166,712
Residential real estate		200,524		139,858		207,660		144,562
Construction, land development, and other land		13,108		5,156		13,270		5,946
Commercial and industrial		16,079		8,055		18,333		10,008
Installment and other		1,796		449		1,819		462
Total acquired impaired loans	$	458,829	$	311,474	$	476,980	$	327,690

The following table summarizes the changes in accretable yield for acquired impaired loans for the three months ended March 31, 2018 and 2017:

	Three Months Ended
	March 31,
	2018			2017
Beginning balance	$	36,446		$	36,868
Accretion to interest income		(5,691	)		(5,684	)
Reclassification from nonaccretable difference, net		8,545			3,560
Ending balance	$	39,300		$	34,744

Acquired non-impaired loans and leases—The unpaidprincipalbalanceand carryingvalueforacquirednon-impairedloansand leasesat March 31, 2018 and December 31, 2017 were as follows:

	March 31, 2018				December 31, 2017
	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial real estate	$	203,539	$	197,589	$	221,710	$	211,359
Residential real estate		31,291		30,785		32,605		32,085
Construction, land development, and other land		1,881		1,822		1,926		1,845
Commercial and industrial		100,894		89,985		105,529		94,731
Installment and other		350		36		355		42
Lease financing receivables		31,227		29,993		37,476		36,357
Total acquired non-impaired loans and leases	$	369,182	$	350,210	$	399,601	$	376,419

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BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 6—Allowance forLoanand Lease Losses and ReserveforUnfundedCommitments

Loans and leasesconsideredforinclusionin theallowanceforloanand leaselossesincludeacquired non-impairedloansand leases,thoseacquiredimpairedloanswith creditdeteriorationafteracquisition,and originatedloansand leases.Although allacquiredloansand leasesareincludedin the followingtable,only thosewith creditdeteriorationsubsequentto acquisitiondateareactuallyincludedin the allowanceforloanand leaselosses.

The followingtablessummarizethebalanceand activitywithintheallowanceforloanand leaselosses, thecomponentsof theallowanceforloanand leaselossesin termsof loansand leasesindividuallyand collectivelyevaluatedforimpairment,and correspondingloanand leasebalancesby typefor the three months ended March 31, 2018 and 2017 are as follows:

March 31, 2018	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	$	4,794		$	1,638		$	222		$	7,418		$	41	$	2,593		$	16,706
Provisions (releases)		934			(74	)		397			3,424			20		414			5,115
Charge-offs		(409	)		—			(418	)		(3,085	)		—		(510	)		(4,422	)
Recoveries		—			—			—			6			—		235			241
Ending balance	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640
Ending balance:
Individually evaluated for    impairment	$	1,572		$	153		$	—		$	2,963		$	14	$	—		$	4,702
Collectively evaluated for    impairment		1,827			1,036			177			3,626			11		2,732			9,409
Loans acquired with deteriorated    credit quality		1,920			375			24			1,174			36		—			3,529
Total allowance for loan and lease    losses	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640

March 31, 2018	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	$	12,375	$	2,029	$	—	$	12,598	$	14	$	—	$	27,016
Collectively evaluated for    impairment		670,538		426,272		111,914		548,076		3,667		181,461		1,941,928
Loans acquired with deteriorated    credit quality		157,956		139,858		5,156		8,055		449		—		311,474
Total loans and leases	$	840,869	$	568,159	$	117,070	$	568,729	$	4,130	$	181,461	$	2,280,418

23

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

March 31, 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	$	1,945		$	2,483		$	742		$	4,196		$	334		$	1,223		$	10,923
Provisions (releases)		340			1			(325	)		855			(3	)		1,023			1,891
Charge-offs		(238	)		(67	)		—			(215	)		—			(770	)		(1,290	)
Recoveries		—			—			—			—			—			293			293
Ending balance	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817
Ending balance:
Individually evaluated for    impairment	$	—		$	282		$	26		$	966		$	325		$	—		$	1,599
Collectively evaluated for    impairment		1,622			1,470			391			3,210			5			1,769			8,467
Loans acquired with deteriorated    credit quality		425			665			—			660			1			—			1,751
Total allowance for loan and lease    losses	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817

March 31, 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	$	9,764	$	1,262	$	85	$	3,317	$	327	$	—	$	14,755
Collectively evaluated for    impairment		611,397		430,469		99,114		432,036		2,054		162,675		1,737,745
Loans acquired with deteriorated    credit quality		201,689		169,676		6,116		13,114		439		—		391,034
Total loans and leases	$	822,850	$	601,407	$	105,315	$	448,467	$	2,820	$	162,675	$	2,143,534

The Company increased the allowance for loan and lease losses by $934,000 and $894,000 for the three months ended March 31, 2018 and 2017, respectively.For acquired impaired loans, the Company decreased the allowance for loan and lease losses by $345,000 for the three months ended March 31, 2018. The Company increased the allowance for loan and lease losses for acquired impaired loans by $140,000 for the three months ended March 31, 2017.

24

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The followingtablessummarizetherecordedinvestment,unpaidprincipalbalance, and relatedallowanceforloansand leasesconsideredimpaired as of March 31, 2018 and December 31, 2017, which excludes acquired impaired loans:

March 31, 2018	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	6,151	$	7,116	$	—
Residential real estate		1,682		1,653		—
Commercial and industrial		6,441		7,678		—
With an allowance recorded
Commercial real estate		6,224		7,684		1,572
Residential real estate		347		345		153
Commercial and industrial		6,157		9,160		2,963
Installment and other		14		14		14
Total impaired loans	$	27,016	$	33,650	$	4,702

December 31, 2017	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	11,425	$	12,936	$	—
Residential real estate		2,075		2,046		—
Commercial and industrial		5,470		6,774		—
With an allowance recorded
Commercial real estate		2,459		2,634		1,101
Residential real estate		354		351		158
Commercial and industrial		9,314		9,724		2,692
Installment and other		14		14		14
Total impaired loans	$	31,111	$	34,479	$	3,965

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:

March 31, 2018	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,039	$	103
Residential real estate		1,930		10
Commercial and industrial		7,300		62
With an allowance recorded
Commercial real estate		4,122		37
Residential real estate		351		1
Commercial and industrial		6,975		102
Installment and other		14		—
Total impaired loans	$	29,731	$	315

25

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

March 31, 2017	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,798	$	130
Residential real estate		787		7
Commercial and industrial		1,402		60
With an allowance recorded
Residential real estate		488		1
Construction, land development and other land		86		6
Commercial and industrial		1,881		3
Installment and other		328		4
Total impaired loans	$	14,770	$	211

For purposesof thesetables,theunpaidprincipalbalancerepresentstheoutstandingcontractualbalance. Impairedloansincludeloansthatareindividuallyevaluatedforimpairmentas wellas troubleddebt restructuringsforallloancategories.The sumof non-accrualloansand loanspastdue 90 days stillon accrual willdifferfromthetotalimpairedloanamount.

The followingtablessummarizetheriskratingcategoriesof theloansand leasesconsideredfor inclusionin theallowanceforloanand leaselossescalculation,excludingacquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

March 31, 2018	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	593,209	$	393,416	$	85,634	$	465,449	$	3,648	$	178,759	$	1,720,115
Watch		65,816		29,875		23,127		64,914		2		159		183,893
Special Mention		10,665		2,573		3,153		12,272		17		1,092		29,772
Substandard		13,223		2,437		—		18,039		14		1,162		34,875
Doubtful		—		—		—		—		—		289		289
Loss		—		—		—		—		—		—		—
Total	$	682,913	$	428,301	$	111,914	$	560,674	$	3,681	$	181,461	$	1,968,944

December 31, 2017	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	638,066	$	398,743	$	73,935	$	415,163	$	3,732	$	174,672	$	1,704,311
Watch		58,217		29,165		22,380		67,024		20		190		176,996
Special Mention		14,645		2,251		3,168		13,535		—		1,293		34,892
Substandard		14,053		2,497		—		15,508		14		1,259		33,331
Doubtful		—		—		—		—		—		272		272
Loss		—		—		—		—		—		—		—
Total	$	724,981	$	432,656	$	99,483	$	511,230	$	3,766	$	177,686	$	1,949,802

26

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at March 31, 2018 and December 31, 2017:

March 31, 2018	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	$	9,266	$	—	$	—	$	8,194	$	17,460	$	665,453	$	682,913
Residential real estate		79		—		—		1,848		1,927		426,374		428,301
Construction, land development, and    other land		—		—		—		—		—		111,914		111,914
Commercial and industrial		10,064		1,704		—		12,916		24,684		535,990		560,674
Installment and other		17		—		—		14		31		3,650		3,681
Lease financing receivables		1,282		377		—		654		2,313		179,148		181,461
Total	$	20,708	$	2,081	$	—	$	23,626	$	46,415	$	1,922,529	$	1,968,944

December 31, 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	$	4,783	$	968	$	—	$	8,459	$	14,210	$	710,771	$	724,981
Residential real estate		148		—		—		2,092		2,240		430,416		432,656
Construction, land development, and    other land		—		—		—		—		—		99,483		99,483
Commercial and industrial		6,667		967		—		4,348		11,982		499,248		511,230
Installment and other		18		—		—		14		32		3,734		3,766
Lease financing receivables		997		638		—		851		2,486		175,200		177,686
Total	$	12,613	$	2,573	$	—	$	15,764	$	30,950	$	1,918,852	$	1,949,802

At March 31, 2018 and December 31, 2017, theCompany had a recordedinvestmentin troubleddebt restructuringsof $2.1 million and $2.6 million,respectively.The restructuringswere granteddue to borrower financialdifficultyand providefora modificationof loanrepaymentterms.The Company has allocated a specificallowance of $215,000 and $357,000 fortheseloansat March 31, 2018 and December 31, 2017, respectively. In addition,therewere no commitments outstandingon troubleddebtrestructurings.

Loans modifiedas troubleddebtrestructuringsthatoccurredduringthe three months ended March 31, 2018 and year ended December 31, 2017 resulted in $144,000 and $487,000 of charge-offsor permanentreductionsof therecordedinvestmentsin theloans, respectively. There was one commercial real estate loan totaling $125,000 that wasmodified as a troubled debt restructuring during the three months ended March 31, 2018. Troubleddebtrestructuringsthatsubsequentlydefaultedwithintwelvemonthsof therestructuredateduringthe year ended December 31, 2017 had a recordedinvestmentof $144,000. No troubleddebtrestructuringssubsequentlydefaultedwithintwelvemonthsof therestructuredateduringthe three months ended March 31, 2018.

At March 31, 2018 and December 31, 2017, thereserveforunfundedcommitmentswas $1.0 million and $923,000, respectively.During the three months ended March 31, 2018 and 2017, theprovisionsforunfundedcommitments were $113,000 and $50,000, respectively.Therewere no charge-offsor recoveriesrelatedto thereservefor unfundedcommitmentsduringthe periods.

27

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 7—ServicingAssets

Activityforservicingassetsand therelatedchangesin fairvalue for the three months ended March 31, 2018 and 2017 is as follows:

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	21,400		$	21,091
Additions, net		2,102			1,422
Changes in fair value		(1,887	)		(1,290	)
Ending balance	$	21,615		$	21,223

Loans servicedforothersarenot includedin theConsolidatedStatementsof FinancialCondition.The unpaidprincipalbalancesof theseloansservicedforotherswere as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Loan portfolios serviced for:
SBA guaranteed loans		1,066,269		1,021,143
USDA guaranteed loans		93,650		91,758
Total	$	1,159,919	$	1,112,901

 Loan servicing income totaled $563,000 and $919,000 for the three months ended March 31, 2018 and 2017, respectively.

The fairvalueof servicingrightsishighlysensitiveto changesin underlyingassumptions.Changes in prepaymentspeedassumptionshave themostsignificantimpacton thefairvalueof servicingrights.

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.

Note 8—Other Real Estate Owned

The following table presents the change in other real estate owned (“OREO”) for the three months ended March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	10,626		$	16,570
Net additions to OREO		1,044			808
Dispositions of OREO		(1,123	)		(3,929	)
Valuation adjustments		(81	)		(276	)
Ending balance	$	10,466		$	13,173

At March 31, 2018 and December 31, 2017, the balance of real estate owned included $2.9 million and $3.6 million, respectively, of foreclosed residential real estate properties recorded as a result of obtaining physical possession of the property.

At March 31, 2018 and December 31, 2017, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process is $2.4 million and $1.9 million, respectively.

28

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018					2017
	Goodwill		CoreDeposit Intangible			Goodwill		Core Deposit Intangible
Beginning balance	$	54,562	$	16,720		$	51,975	$	19,776
Amortization or accretion		—		(761	)		—		(765	)
Ending balance	$	54,562	$	15,959		$	51,975	$	19,011
Accumulated amortization or accretion	N/A		$	14,227		N/A		$	11,175
Weighted average remaining amortization or accretion    period	N/A		5.4 years			N/A		6.4 Years

The Company had other intangible assets of $32,000 and $36,000 as of March 31, 2018 and December 31, 2017, respectively, related to trademark-related transactions.

The following table presents the estimated amortization expense for core deposit intangible and other intangible assets recognized at March 31, 2018:

	Estimated Amortization
2018	$	2,295
2019		3,050
2020		3,027
2021		3,017
2022		3,010
Thereafter		1,592
Total	$	15,991

Note 10—IncomeTaxes

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 three months ended March 31, 2018 and 2017 were 16.3% and 40.9%, respectively. The reduction in the effective tax rate is primarily a result of the passage of the Tax Cuts and Jobs Act (the “Tax Act”), which was enacted on December 22, 2017. Among other things, the Tax Act reduces the corporate federal income tax rate from 35% to 21%, effective January 1, 2018. Also on December 22, 2017, the SEC issued Staff Accounting Bulletin 118 (“SAB 118”), which provides guidance on accounting for the Tax Act’s impact. SAB 118 provides a measurement period, not to extend beyond one year from the date of enactment during which a company, acting in good faith, may complete the accounting for the impacts of the Tax Act. The Company recorded a net income tax benefit of $724,000 as a result of the rate change.

Net deferred tax assets remained relatively unchanged at$47.4 million at March 31, 2018 compared to December 31, 2017. The reduction in the Company’s net operation loss carryforwards being applied to the current year tax liability was offset by an increase in its deferred tax asset related to unrealized holding losses on securities available-for-sale.

29

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 11—Deposits

The composition of deposits was as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Non-interest bearing demand deposits	$	749,892	$	760,887
Interest bearing checking accounts		196,802		186,611
Money market demand accounts		382,282		349,862
Other savings		439,277		437,212
Time deposits (below $250,000)		665,541		627,255
Time deposits ($250,000 and above)		90,753		81,502
Total deposits	$	2,524,547	$	2,443,329

Time deposits of $250,000 or more included nobrokered deposits at March 31, 2018 or December 31, 2017.

Note 12—FederalHomeLoanBankAdvances

The followingtablesummarizestheFHLBadvancesas of March 31, 2018 and December 31, 2017: 

	March 31,			December 31,
	2018			2017
Federal Home Loan Bank advances	$	380,000		$	361,506
Weighted average cost		1.88	%		1.49	%

At March 31, 2018, fixed-rate advances totaled $250.0 million with an interest rate of 2.02% and maturing June 2018.Total floating rate advances were $130.0 million at March 31, 2018, with interest rates of approximately 1.62%and maturitiesrangingfrom April 2018 to May2018. The Company’sadvancesfromtheFHLBarecollateralizedby residentialrealestateloansand securities. The Company’s required investment in FHLB stock is $1 for every $20 in advances. Refer to Note 4—Securities for additional discussion. At March 31, 2018 and December 31, 2017, the Bank has additional borrowing capacity from the FHLB of $797.5 million and $795.0 million, respectively, subject to the availability of proper collateral.  The Bank’s maximumborrowingcapacityislimitedto 35% of totalassets.

 The Company hedgesinterestrateson borrowedfundsusinginterestrateswaps throughwhich the Company receivesvariableamountsand pays fixedamounts.Referto Note 17—DerivativeInstrumentsand Hedge Activitiesforadditionalinformation.

Note 13—Other Borrowings

The following is a summary of the Company’s other borrowings as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Securities sold under agreements to repurchase	$	27,815	$	31,187
Line of credit		—		—
Total	$	27,815	$	31,187

Securitiessoldunderagreementsto repurchaserepresenta demanddepositproductofferedto customers thatsweep balancesin excessof theFDICinsurancelimitintoovernightrepurchaseagreements.The Company pledgessecuritiesas collateralfortherepurchaseagreements.Referto Note 4—Securitiesforadditional discussion.

OnOctober13,2016,inconnectionwiththeRidgestoneacquisition,theCompany enteredintoa$30.0million creditagreementwitha correspondent bank.At March 31, 2018 and December 31, 2017,the interestratewas 3.75%. 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

30

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

million. When the outstanding balance is reduced to $5.0 million, the line of credit will be converted to a revolving line of credit with credit availability up to $5.0 million until maturity.  In July 2017, the Company repaid the outstanding balance, in full, under this line of credit of $16.2 million with proceeds from its initial public offering (“IPO”). The line of credit matured on October 12, 2017 and carried an interest rate equal to the Prime Rate. On October 12, 2017, the Company amended the credit agreement, which extended the maturity date to October 11, 2018. The amended revolving line of credit bears interest at either the London Interbank Offered Rate (“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 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. At March 31, 2018 and December 31, 2017, the line of credit has not been drawn upon, so an interest rate option has not been selected.

The followingtablepresentsshort-termcreditlinesavailableforuse, forwhich theCompany did not have an outstandingbalanceas of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Federal Reserve Bank of Chicago discount window line	$	156,077	$	144,248
Available federal funds lines		55,000		55,000

Note 14—Junior Subordinated Debentures

At March 31, 2018 and December 31, 2017, theCompany’sjuniorsubordinateddebenturesby issuancewere as follows:

Name of Trust	Aggregate Principal Amount March 31, 2018			Aggregate Principal Amount December 31, 2017			Stated Maturity	Contractual Rate at March 31, 2018			Interest Rate Spread
MetropolitanStatutory Trust 1	$	35,000		$	35,000		March17, 2034		4.97	%	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		(8,700	)		(8,853	)
Total liability, at carrying value	$	27,800		$	27,647

 In 2004, theCompany’spredecessor,MetropolitanBank Group, Inc.,issued$35.0 millionfloatingrate juniorsubordinateddebenturesto MetropolitanStatutoryTrust1, which was formedfortheissuanceof trust preferredsecurities.The debenturesbearinterestatthree LIBOR plus 2.79% (4.97%and 4.39% at March 31, 2018 and December 31, 2017, respectively).Interestispayablequarterly.The Company has therightto redeemthedebentures,in whole or in part,on any interestpaymentdateon or after March2009. Accruedinterestpayablewas $65,000 and $62,000 as of March 31, 2018 and December 31, 2017, respectively.

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 March 31, 2018 and December 31, 2017), 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 March 31, 2018 or December 31, 2017.

The Trustsarenot consolidatedwith theCompany. Accordingly,theCompany reportsthesubordinated debenturesheldby theTrustsas liabilities.The Company owns allof thecommonsecuritiesof eachtrust.The juniorsubordinateddebenturesqualify,and aretreatedas, Tier1 regulatorycapitalof theCompany subjectto regulatorylimitations.The trustpreferredsecuritiesissuedby eachtrustrankequallywith thecommonsecurities in rightof payment,exceptthatifan eventof defaultundertheindenturegoverningthenoteshas occurredand is continuing,thepreferredsecuritieswillrankseniorto thecommonsecuritiesin rightof payment.

31

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 15—Commitmentsand Contingent Liabilities

Legalcontingencies—Intheordinarycourseofbusiness,theCompanyandBankhavevarious outstandingcommitmentsandcontingentliabilitiesthatarenotrecognizedintheaccompanyingconsolidated financialstatements.Inaddition,theCompanymaybeadefendantincertainclaimsandlegalactionsarisinginthe ordinarycourseofbusiness.Intheopinionofmanagement,afterconsultationwithlegalcounsel,theultimate dispositionofthesemattersiscurrentlynotexpectedtohaveamaterialadverseeffectonthe Company’s Consolidated Statements of Financial Condition.

Operatingleasecommitments—The Company has enteredintovariousoperatingleaseagreements primarilyforfacilitiesand landon which bankingfacilitiesarelocated.Certainleaseagreementshave renewal optionsattheend of theoriginalleasetermand certainleaseagreementshave escalationclausesin therent payments.

The minimumannualrentalcommitmentsforoperatingleasessubsequentto March 31, 2018, exclusiveof taxesand othercharges,aresummarizedas follows:

	MinimumRental Commitments
2018	$	2,307
2019		2,600
2020		2,089
2021		1,809
2022		972
Thereafter		2,073
Total	$	11,850

The Company’srentalexpensesforthe three months ended March 31, 2018 and 2017  were $1.2 millionand $1.1 million,respectively.During the three months ended March 31, 2018 and 2017, theCompany received $170,000 and $190,000, respectively,in subleaseincomewhich isincludedin the ConsolidatedStatementsof Operationsas a reductionof occupancyexpense.The total amount of minimum rentals to be received in the future on these subleases is approximately $1.8 million, and the leases have contractual lives extending through 2025. In additionto theabove requiredleasepayments, the Company has contractualobligationsrelated primarilyto informationtechnologycontractsand othermaintenancecontracts.The amountsarenot material.

Commitmentsto extend credit—The Bank ispartyto financialinstrumentswith off-balancesheetrisk in thenormalcourseof businessto meetthefinancingneedsof itscustomers.These financialinstrumentsinclude commitmentsto extendcreditand standbylettersof credit.Those instrumentsinvolve,to varyingdegrees, elementsof creditand interestrateriskin excessof theamountrecognizedin theConsolidatedStatementsof FinancialCondition.The contractualor notionalamountsof thoseinstrumentsreflecttheextentof involvement theBank has in particularclassesof financialinstruments.

The Company’s exposureto creditlossin theeventof non-performanceby theotherpartyto thefinancial instrumentforcommitmentsto extendcreditand standbylettersof creditisrepresentedby thecontractualor notionalamountof thoseinstruments.The Bank usesthesamecreditpoliciesin makingcommitmentsand conditionalobligationsas itdoes forfundedinstruments.The Bank does not anticipateany materiallossesas a resultof thecommitmentsand standbylettersof credit.

The followingtablesummarizesthecontractor notionalamountof outstandingloanand lease commitmentsat March 31, 2018 and December 31, 2017:

	March 31,				December 31,
	2018				2017
	Fixed Rate		Variable Rate		Fixed Rate		Variable Rate
Commitments to extend credit	$	58,074	$	510,822	$	55,924	$	467,429
Standby letters of credit		2,570		3,538		1,226		3,337
Total	$	60,644	$	514,360	$	57,150	$	470,766

32

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Commitmentsto extendcreditareagreementsto lendto a customeras long as thereisno violationof any conditionestablishedin thecontract.Commitmentsgenerallyhave fixedexpirationdatesor other terminationclausesand mayrequirepaymentof a fee.Sincemanyof thecommitmentsareexpectedto expire withoutbeingdrawn upon, thetotalcommitmentamountdoes not necessarilyrepresentfuturecashrequirements. The Bank evaluateseachcustomer’screditworthinesson a case-by-casebasis.The amountof collateralobtained, ifdeemednecessaryby theBank upon extensionof credit,isbasedon management’screditevaluationof the counterparty.Collateralisprimarilyobtainedin theformof commercialand residentialrealestate(including incomeproducingcommercialproperties).

Standby lettersof creditareconditionalcommitmentsissuedby theBank to guaranteeto a third-party theperformanceof a customer.Those guaranteesareprimarilyissuedto supportpublicand privateborrowing arrangements,bond financingand similartransactions.The creditriskinvolvedin issuinglettersof creditis essentiallythesameas thatinvolvedin extendingloanfacilitiesto customers.

Commitmentsto makeloansaregenerallymadeforperiodsof 90 days or less.The fixedrateloan commitmentshave interestratesrangingfrom1.00% to 19.50% and maturitiesup to 2024. Variablerateloan commitmentshave interestratesrangingfrom2.45% to 11.75% and maturitiesup to 2040.

Note 16—Fair Value Measurement

Fairvalueistheexchangepricethatwould be receivedforan assetor paidto transfera liability(exit price)in theprincipalor mostadvantageousmarketfortheassetor liabilityin an orderlytransactionbetween marketparticipantson themeasurementdate.In addition,theCompany has theabilityto obtainfairvaluesfor marketsthatarenot accessible.

These typesof inputscreatethefollowingfairvaluehierarchy:

Level 1—Quoted pricesin activemarketsforidenticalassetsor liabilities.

Level 2—Quoted pricesforsimilarinstrumentsin activemarkets,quotedpricesforidenticalor similar instrumentsin marketsthatarenot activeand model-derivedvaluationswhose inputsareobservableor whose significantvaluedriversareobservable.

Level 3—Unobservableinputsthataresupportedby littleor no marketactivityand thataresignificant to thefairvalueof theassetor liability.Unobservableinputsareused to measurefairvalueto theextentthat observableinputsarenot available.The Company’sown dataused to developunobservableinputsmaybe adjustedformarketconsiderationswhen reasonablyavailable.

A financialinstrument’scategorizationwithinthevaluationhierarchyisbasedupon thelowestlevelof inputthatissignificantto thefairvaluemeasurement.The Company’sassessmentof thesignificanceof a particularinputto thefairvaluemeasurementin itsentiretyrequiresjudgment,and considersfactorsspecificto assetsand liabilities.

The Company used thefollowingmethodsand significantassumptionsto estimatefairvalueforcertain assetsmeasuredand carriedatfairvalueon a recurringbasis:

Securitiesavailable-for-sale—The Company obtainsfairvaluemeasurementsfroman independent pricingservice.Managementreviewstheproceduresused by thethirdparty,includingsignificantinputsused in thefairvaluecalculations.The fairvaluemeasurementsconsiderobservabledatathatmayincludedealerquotes, marketspreads,cashflows,theU.S.Treasuryyieldcurve,livetradinglevels,tradeexecutiondata,market consensusprepaymentspeeds,creditinformationand thebond’stermsand conditions,amongotherthings.When marketquotesarenot readilyaccessibleor available,alternativeapproachesareutilized,such as matrixor model pricing.

The Company’s methodology for pricing non-rated bonds focuses on three distinct inputs: equivalent rating, yield and other pricing terms. To determine the rating for a given non-rated municipal bond, the Company references a publicly issued bond by the same issuer if available as well as other additional key metrics to support the credit worthiness. Typically, pricing for these types of bonds would require a higher yield than a similar rated bond from the same issuer. A reduction in price is applied to the rating obtained from the comparable bond, as the Company believes if liquidated, a non-rated bond would be valued less than a similar bond with a verifiable rating. The reduction applied by the Company is one notch lower (i.e. a “AA” rating for a comparable bond would be reduced to “AA-” for the Company’s valuation). In 2018 and 2017, all of the ratings derived by the Company were “BBB” or better with and without comparable bond proxies. The fair value measurement of municipal bonds is sensitive to the rating input, as a higher rating typically results in an increased valuation.

33

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The remainingpricinginputsused in thebond valuationareobservable.Based on theratingdetermined,the Company obtainsa correspondingcurrentmarketyieldcurveavailableto marketparticipants.Otherterms includingcoupon, maturitydate,redemptionprice,numberof coupon paymentsperyear,and accrualmethodare obtainedfromtheindividualbond termsheets.

Servicingassets—Fairvalueisbasedon a loan-by-loanbasistakingintoconsiderationtheoriginalterm to maturity,thecurrentage of theloanand theremainingtermto maturity.The valuationmethodologyutilized fortheservicingassetsbeginswith generatingfuturecashflowsforeachservicingasset,basedon theirunique characteristicsand market-basedassumptionsforprepaymentspeeds.The presentvalueof thefuturecashflows arethencalculatedutilizingmarket-baseddiscountrateassumptions.

Derivativeinstruments—Interestrateswaps arevaluedby a thirdparty,usingmodelsthatprimarily use marketobservableinputs,such as yieldcurves,and arevalidatedby comparisonwith valuationsprovidedby therespectivecounterparties.Derivativefinancialinstrumentsareincludedin otherassetsand otherliabilitiesin theConsolidatedStatementsof FinancialCondition.

The followingtablessummarizetheCompany’sfinancialassetsand liabilitiesthatwere measuredatfair valueon a recurringbasisat March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	22,741	$	22,741	$	—	$	—
U.S. Government agencies		62,621		—		62,621		—
Obligations of states, municipalities, and political    subdivisions		32,148		—		31,773		375
Mortgage-backed securities; residential
Agency		309,050		—		309,050		—
Non-agency		54,274		—		54,274		—
Mortgage-backed securities; commercial
Agency		74,127		—		74,127		—
Non-agency		30,344		—		30,344		—
Corporate securities		35,363		—		35,363		—
Other securities		5,389		1,880		2,817		692
Servicing assets		21,615		—		—		21,615
Derivative assets		10,500		—		10,500		—
Financial liabilities
Derivative liabilities		1,432		—		1,430		2

34

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	14,863	$	14,863	$	—	$	—
U.S. Government agencies		52,958		—		52,958		—
Obligations of states, municipalities, and political    subdivisions		33,170		—		32,795		375
Mortgage-backed securities; residential
Agency		307,457		—		307,457		—
Non-agency		39,514		—		39,514		—
Mortgage-backed securities; commercial
Agency		69,043		—		69,043		—
Non-agency		30,971		—		30,971		—
Corporate securities		29,976		—		29,976		—
Other securities		5,284		1,921		2,686		677
Servicing assets		21,400		—		—		21,400
Derivative assets		5,981		—		5,981		—
Financial liabilities
Derivative liabilities		994		—		994		—

During 2016, theCompany acquiredtheservicingassetsand single-issuertrustpreferredsecurities includedin othersecuritiescategorizedas Level3 of thefairvaluehierarchythrougha businesscombination.

TheCompany has purchasedprivately-issuedmunicipalsecuritiesthatare categorizedas Level3. These municipalsecuritiesarebonds issuedforone municipalgovernmententity locatedin theChicago metropolitan area and areprivatelyplaced,non-ratedbonds withoutCommittee on Uniform Security Identification Proceduresnumbers.

The Company did not have any transfersbetweenLevel1 and Level2 of thefairvaluehierarchyduringthe three months ended March 31, 2018 and 2017. The Company’spolicyfordeterminingtransfersbetweenlevelsoccursattheend of thereportingperiodwhen circumstancesin theunderlyingvaluationcriteriachangeand resultin transfer betweenlevels.

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):

	Three Months Ended March 31,
	2018		2017		2018			2017
	Investment Securities				Servicing Assets
Balance, beginning of period	$	1,052	$	1,080	$	21,400		$	21,091
Additions, net		—		—		2,102			1,422
Amortization		1		1		—			—
Change in unrealized loss		14		—		—			—
Change in fair value		—		—		(1,887	)		(1,290	)
Balance, end of period	$	1,067	$	1,081	$	21,615		$	21,223

35

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The followingtablepresentsadditionalinformationabouttheunobservableinputsused in thefairvalue measurementson recurringbasisthatwere categorizedwithinLevel3 of thefairvaluehierarchyas of March 31, 2018:

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	Discountedcash flow	Probability of default	2.2%—2.4%		2.3	%	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	5.6%—16.3%		9.3	%	Decrease
		Discount rate	10.4%—20.6%		14.2	%	Decrease
		Expected weighted average loan life	0.8—7.9 years	5.5 years			Increase

The Company used thefollowingmethodsand significantassumptionsto estimatefairvalueforcertain assetsmeasuredand carriedatfairvalueon a non-recurringbasis:

Impairedloans (excludingacquired impairedloans)—Impairedloans,otherthanthoseexistingon thedateof a businessacquisition,areprimarilycarriedatthefairvalueof theunderlyingcollateral,less estimatedcoststo sell,iftheloaniscollateraldependent.Valuationsof impairedloansthatarecollateral dependentaresupportedby thirdpartyappraisalsin accordancewith theBank’s creditpolicy.Impairedloansthatarenot collateraldependentarenot material.

Assetsheld forsale—Assetsheldforsaleconsistof formerbranchlocations,vacantland,and a house previouslypurchasedforexpansion.Assetsareconsideredheldforsalewhen managementhas approvedto sell theassetsfollowinga branchclosureor otherevents.The propertiesarebeingactivelymarketedand transferred to assetsheldforsalebasedon thelowerof carryingvalueor itsfairvalue,lessestimatedcoststo sell.

Otherrealestateowned—Certainassetsheldwithinotherrealestateowned representrealestateor othercollateralthathas been adjustedto itsestimatedfairvalue,lesscostto sell,as a resultof transferringfrom theloanportfolioatthetimeof foreclosureor repossessionand basedon management’speriodicimpairment evaluation.Fromtimeto time,non-recurringfairvalueadjustmentsto otherrealestateowned arerecordedto reflectpartialwrite-downsbasedon an observablemarketpriceor currentappraisedvalueof property.

Adjustmentsto fairvaluebasedon such non-recurringtransactionsgenerallyresultfromtheapplication of lower-of-cost-or-marketaccountingor write-downsof individualassetsdue to impairment.The following tablessummarizetheCompany’sassetsthatwere measuredatfairvalueon a non-recurringbasis,excluding acquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	10,803	$	—	$	—	$	10,803
Residential real estate		1,876		—		—		1,876
Construction, land development, and other land		—		—		—		—
Commercial and industrial		9,635		—		—		9,635
Installment and other		—		—		—		—
Assets held for sale		9,030		—		—		9,030
Other real estate owned		10,466		—		—		10,466

36

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	12,783	$	—	$	—	$	12,783
Residential real estate		2,271		—		—		2,271
Construction, land development, and other land		—		—		—		—
Commercial and industrial		12,092		—		—		12,092
Installment and other		—		—		—		—
Assets held for sale		9,779		—		—		9,779
Other real estate owned		10,626		—		—		10,626

The followingtableprovidesa descriptionof thevaluationtechnique,unobservableinputsand qualitativeinformationabouttheCompany’sassetsand liabilitiesclassifiedas Level3 and measuredatfairvalue on a non-recurringbasisas of March 31, 2018:

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 followingmethodsand assumptionswere used by theCompany in estimatingfairvaluesof other assetsand liabilitiesfordisclosurepurposes:

Cash and cash equivalents—For theseshort-terminstruments,thecarryingamountisa reasonable estimateof fairvalue.The fairvaluefortimecertificateswith otherbanks isbasedon themarketvaluesfor comparableinvestments.

Securitiesheld-to-maturity—The Company obtainsfairvaluemeasurementsfroman independent pricingservice.Managementreviewstheproceduresused by thethirdparty,includingsignificantinputsused in thefairvaluecalculations.The fairvaluemeasurementsconsiderobservabledatathatmayincludedealerquotes, marketspreads,cashflows,theU.S.Treasuryyieldcurve,livetradinglevels,tradeexecutiondata,market consensusprepaymentspeeds,creditinformationand thebond’stermsand conditions,amongotherthings.When marketquotesarenot readilyaccessibleor available,alternativeapproachesareutilized,such as matrixor model pricing.

Restrictedstock—The fairvaluehas been determinedto approximatecost.

Loans held forsale—The fairvalueof loansheldforsalearebasedon quotedmarketprices,where available,and determinedby discountedestimatedcashflowsusinginterestratesapproximatingtheCompany’s currentoriginationratesforsimilarloansadjustedto reflecttheinherentcreditrisk.

37

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Loanand leasereceivables,net—For certainvariablerateloansthatrepricefrequentlyand with no significantchangesin creditrisk,fairvalueisestimatedatcarryingvalue.The fairvalueof othertypesof loansis estimatedby discountingfuturecashflows,usingcurrentratesatwhich similarloanswould be madeto borrowerswith similarcreditratingsand forthesameremainingmaturities.

Depositliabilities—The fairvalueof demanddeposits,savingsaccounts,and certainmoneymarket depositsistheamountpayableon demandatthereportingdate.The fairvalueof fixed-maturitycertificatesof depositisestimatedby discountingfuturecashflows,usingratescurrentlyofferedfordepositsof similar remainingmaturities.

FederalHomeLoanBankadvances—The fairvalueof FHLBadvancesisestimatedby discounting theagreementsbasedon maturitiesusingratescurrentlyofferedforFHLBadvancesof similarremaining maturitiesadjustedforprepaymentpenaltiesthatwould be incurrediftheborrowingswere paidoffon the measurementdate.

Securitiessold under agreementsto repurchase—The carryingamountapproximatesfairvaluedue to  maturitiesof lessthanninetydays.

Junior subordinated debentures—The fairvalueof juniorsubordinateddebentures,in theformof trustpreferredsecurities,isdeterminedusingratescurrentlyavailableto theCompany fordebtwith similarterms and remainingmaturities.

Accrued interestreceivableand payable—The carryingamountapproximatesfairvalue.

Commitmentsto extend creditand commercialand standby lettersof credit—The fairvaluesof theseoff-balancesheetcommitmentsto extendcreditand commercialand standbylettersof creditarenot consideredpracticableto estimatebecauseof thelackof quotedmarketpricesand theinabilityto estimatefair valuewithoutincurringexcessivecosts.

The estimatedfairvaluesof financialinstrumentsand levelswithinthefairvaluehierarchyareas follows:

			March 31,				December 31,
	Fair Value		2018				2017
	Hierarchy Level		Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets
Cash and due from banks		1	$	17,396	$	17,396	$	19,404	$	19,404
Interest bearing deposits with other banks		2		110,645		110,645		38,945		38,945
Securities held-to-maturity		2		112,266		110,419		117,163		117,277
Other restricted stock		2		17,177		17,177		16,343		16,343
Loans held for sale		3		8,219		9,122		5,212		5,851
Loans and lease receivables, net		3		2,262,778		2,230,050		2,260,786		2,240,235
Accrued interest receivable		3		6,971		6,971		7,670		7,670
Financial liabilities
Non-interest bearing deposits		2		749,892		749,892		760,887		760,887
Interest bearing deposits		2		1,774,655		1,769,476		1,682,442		1,678,535
Accrued interest payable		2		1,612		1,612		1,306		1,306
Line of credit		2		—		—		—		—
Federal Home Loan Bank advances		2		380,000		380,000		361,506		361,500
Securities sold under repurchase agreement		2		27,815		27,815		31,187		31,187
Junior subordinated debentures		3		27,800		34,025		27,647		33,907

38

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

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 March 31, 2018 and December 31, 2017:

	March 31, 2018						December 31, 2017
			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	$	9,047	$	—	$	250,000	$	5,030	$	38
Derivatives not designated as hedging instruments
Other interest rate swaps		94,123		1,453		1,430		94,726		951		956
Other credit derivatives		1,250		—		2		—		—		—
Total derivatives	$	345,373	$	10,500	$	1,432	$	344,726	$	5,981	$	994

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 March 31, 2018 and December 31, 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 effective during the remaining terms of the swaps and did not recognize any hedge ineffectiveness in current earnings during the three months ended March 31, 2018 and 2017.

Interest recorded on these swap transactions reduced FHLB expense by $61,000and increased FHLB expense by $54,000 during the three months ended March 31, 2018 and 2017, respectively, and is reported as a component of interest expense on FHLB advances.At March 31, 2018, the Company estimates $1.8 million 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 three months ended: 

	March 31, 2018						March 31, 2017
	Amount of Gain Recognized in OCI (Effective Portion)		Amount of Gain Reclassified from OCI to Income as a Decrease to Interest Expense		Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion)		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	$	4,070	$	61	$	—	$	(83	)	$	(54	)	$	—

Other interest rate swaps—The total combined notional amount was $94.1 million as of March 31, 2018 with maturities ranging from January 2020 to November 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 months ended March 31, 2018, there were no transaction fees related to these derivative instruments.During the three months ended March 31, 2017, transaction fees were $113,000.

39

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The following table reflects other interest rate swaps as of March 31, 2018:

Notional amounts	$	94,123
Derivative assets fair value		1,453
Derivative liabilities fair value		1,430
Weighted average pay rates		4.38	%
Weighted average receive rates		4.02	%
Weighted average maturity	6.0 years

Other credit derivative—The total notional amount was $1.3 million as of March 31, 2018 with a maturity date of January 2025. The fair value of the other credit derivative is reflected in other liabilities with corresponding gains or losses reflected in non-interest income. The credit valuation adjustment (“CVA”) related to the other credit derivative resulted in an increase to other non-interest income of $23,000 during the three months ended March 31, 2018.

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 CVA is a fair value adjustment to the derivative to account for this risk. During the three months ended March 31, 2018, the CVA resulted in an increase to non-interest income of $27,000. During the three months ended March 31, 2017, the CVA resulted in a decrease to non-interest income of $13,000.

The Company has entered into a risk participation agreement with a counterparty bank to assume a portion of the credit risk related to borrower transactions. The credit risk related to this derivative is managed through the Company’s loan underwriting process.

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: 

	March 31, 2018						December 31, 2017
	Derivative Assets Fair Value			Derivative Liabilities Fair Value			Derivative Assets Fair Value			Derivative Liabilities Fair Value
Gross amounts recognized	$	10,500		$	1,432		$	5,981		$	994
Less: Amounts offset in the Consolidated Statements of Financial Condition		—			—			—			—
Net amount presented in the Consolidated Statements of Financial Condition	$	10,500		$	1,432		$	5,981		$	994
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions		—			—			(232	)		(232	)
Collateral posted		(10,500	)		(1,424	)		(5,371	)		(745	)
Net credit exposure (excess collateral)	$	—		$	8		$	378		$	17

40

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

As of March 31, 2018, the counterparties posted collateral of $11.5 million, which resulted in excess collateral with the Company. For purposes of this disclosure, the amount of posted collateral by the counterparties is limited to the amount offsetting the derivatives asset.

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 common stockto 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. A total of 11,898 restricted shares were also granted during 2017 in connection with the recruitment of employees. These restricted shares vest over a four year period. As of March 31, 2018, there were 1,479,602 shares available for future grants.

The following table discloses the changes in restricted shares for the three months ended March 31, 2018:

	Omnibus Plan
	Number of Shares		Weighted Average Grant Date Fair Value
Beginning balance		70,398	$	20.31
Granted		—	$	—
Vested		—	$	—
Forfeited		—	$	—
Ending balance outstanding at March 31, 2018		70,398	$	20.31

No restricted shares vested during the three months ended March 31, 2018.  

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.

  The following table summarizes restricted stock compensation expense for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - restricted stock	$	112	$	—
Income tax benefit		381		—
Unrecognized compensation expense		1,114		—
Weighted-average amortization period remaining	2.6 years			—

The fair value of the unvested restricted stock awards at March 31, 2018 was $1.6 million.

In April 2018, the Company granted 48,943 shares of restricted voting common stock, par value $0.01 per share. Of this total, 24,345 restricted shares will vest ratably over four years on each anniversary of the grant date, 11,165 restricted shares will vest ratably over three years on each anniversary of the grant date, and 2,268 restricted shares will vest on the first anniversary of the grand date, all subject to continued employment.

41

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

In addition, 11,165 performance-based restricted shares were included in the April 2018 grant.  The number of shares which may be earned under the award is dependent upon the Company’s return on average assets over a three-year period ending December 31, 2020, measured in 2018 against the Company’s internal targets and for 2019 and 2020 against a peer group consisting of publicly-traded bank holding companies ranging in asset size from 50% to 200% of the Company’s total assets.  Under the award, 25% of the shares will be earned at threshold performance, 100% will be earned at target and 50th percentile performance, and up to 125% of the shares with above target and 75th percentile performance.  Any earned shares will vest on the third anniversary of the grant date.

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, 2017. At the time of the Company’s reincorporation in Delaware, in June 2017, the Board of Directors cancelled the MBG Plan and all the respective 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 three months ended March 31, 2018 or during the year ended December 31, 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 1,696,270 shares remain outstanding under the BYB Plan at March 31, 2018.

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

42

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The following table discloses the activity in shares subject to options and the weighted average exercise prices, in actual dollars, for the three months ended March 31, 2018:

	BYB Plan
	Number of Shares			Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Contractual Term (in Years)
Beginning balance		1,783,020		$	11.91	$	19,718		7.6
Granted		—
Expired		—
Exercised		(86,750	)		11.59	$	949
Forfeited		—
Ending balance outstanding at March 31, 2018		1,696,270		$	11.93	$	18,663		7.4
Exercisable at March 31, 2018		1,217,507		$	11.50	$	13,917		7.3

A total of 86,750 stock options were exercised during the three months ended March 31, 2018. During the three months ended March 31, 2018, proceeds from the exercise of stock options were $1.0 million and related tax benefit was $264,000. There were no stock options exercised during the year ended December 31, 2017. No stock options vested during the three months ended March 31, 2018.

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - stock options	$	229	$	286
Income tax benefit		64		113
Unrecognized compensation expense		499		1,466
Weighted-average amortization period remaining	1.1 years		1.8 years

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 1,696,270 and 1,798,320 shares of common stock were outstanding as of March 31, 2018 and 2017, respectively. There were 70,798 restricted stock awards outstanding at March 31, 2018.  There were no restricted stock awards outstanding at March 31, 2017.

43

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

The following represent the calculation of basic and diluted earnings per share for the periods presented:

	Three Months Ended March 31,
	2018		2017
Net income	$	6,768	$	6,560
Less: Dividends on preferred shares		193		189
Net income available to common stockholders	$	6,575	$	6,371
Weighted-average common stock outstanding:
Weighted-average common stock outstanding (basic)		29,291,179		24,616,706
Incremental shares		622,454		461,721
Weighted-average common stock outstanding (dilutive)		29,913,633		25,078,427
Basic earnings per common share	$	0.22	$	0.26
Diluted earnings per common share	$	0.22	$	0.25

Note 20—Stockholders’ Equity

A summary of the Company’s preferred and common stock at March 31, 2018 and December 31, 2017 is as follows:

	March 31,		December 31,
	2018		2017
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		10,438
Subscription receivable		—		—
Shares outstanding		10,438		10,438
Common stock, voting
Par value	$	0.01	$	0.01
Shares authorized		150,000,000		150,000,000
Shares issued		29,404,048		29,317,298
Shares outstanding		29,404,048		29,317,298

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 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.

 For the three months ended March 31, 2018, the Company declared and paid dividends on the Series B preferred stock of $193,000, compared to $189,000 for the three months ended March 31, 2017.

44

BYLINE BANCORP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Table dollars in thousands, except share and per share data) (Unaudited)

Note 21—Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) for the Three Months Ended March 31, 2018 and March 31, 2017

(dollars in thousands)	Unrealized Gains (Losses) on Cash Flow Hedges			UnrealizedGains (Losses) on Available-for -Sale Securities			Total Accumulated Other Comprehensive Income (Loss)
Balance, January 1, 2017	$	2,233		$	(9,501	)	$	(7,268	)
Other comprehensive income (loss), net of tax		(18	)		386			368
Balance, March 31, 2017	$	2,215		$	(9,115	)	$	(6,900	)
Balance, January 1, 2018	$	2,913		$	(8,000	)	$	(5,087	)
Reclassification of certain income tax effects from    accumulated other comprehensive income		687			(1,450	)		(763	)
Other comprehensive income (loss), net of tax		2,893			(6,457	)		(3,564	)
Balance, March 31, 2018	$	6,493		$	(15,907	)	$	(9,414	)

45

Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following is a discussion and analysis of Byline Bancorp, Inc.’s financial condition and results of operations and should be read in conjunction with our consolidated financial statements and notes thereto included elsewhere in this report. The words “the Company,” “we,” “our” and “us” refer to Byline Bancorp, Inc. and its consolidated subsidiaries, unless we indicate otherwise.

Overview

Our business

We are a bank holding company headquartered in Chicago, Illinois and conduct all our business activities through our subsidiary, Byline Bank, a full service commercial bank, and Byline Bank’s subsidiaries. Through Byline Bank, we offer a broad range of banking products and services to small and medium sized businesses, commercial real estate and financial sponsors and to consumers who generally live or work near our branches. In addition to our traditional commercial banking business, we provide small ticket equipment leasing solutions through Byline Financial Group, a wholly-owned subsidiary of Byline Bank, headquartered in Bannockburn, Illinois with sales offices in Texas, Tennessee, North Carolina and New York, and sales representatives in Florida, New Jersey, Michigan and Arizona. Following our acquisition of Ridgestone Financial Services, Inc. (“Ridgestone”) in October 2016, we also participate in U.S. government guaranteed lending programs and originate U.S. government guaranteed loans. Byline Bank was the fifth most active originator of SBA loans in the country and the most active SBA lender in Illinois and Wisconsin, as reported by the SBA for the quarter ended March 31, 2018. As of March 31, 2018, we had consolidated total assets of $3.5 billion, total gross loans and leases outstanding of $2.3 billion, total deposits of $2.5 billion, and total stockholders’ equity of $462.9 million.

Recapitalization

In 2013, our predecessor, Metropolitan Bank Group, Inc. (“Metropolitan”), experienced significant credit and financial losses resulting primarily from the collapse of real estate prices during the severe economic recession occurring during 2007 through 2009 in addition to a number of regulatory and other operational challenges. Despite deterioration in asset quality and financial performance, Metropolitan maintained a high quality deposit base, an attractive branch network and strong customer loyalty, which made it an ideal candidate for a turnaround.

An investment group raised $206.7 million in equity capital to recapitalize and gain control of Metropolitan through a series of transactions by which Metropolitan merged its multiple subsidiary banks into one, and an investor group acquired voting common stock and preferred stock of Metropolitan. The investors formed BXM Holdings, Inc. for the purpose of identifying an investment opportunity in a troubled U.S. banking institution. MBG Investors I, L.P. was the lead investor in the Recapitalization and Mr. del Valle Perochena, a member of our board of directors, is the general partner of MBG Investors I, L.P. and possesses the voting and investment power with respect to the securities beneficially owned by MBG Investors I, L.P. BXM Holdings, Inc. hired Roberto Herencia, the Chairman of our board of directors, and Alberto Paracchini, our President, Chief Executive Officer and Director, to identify an investment opportunity and later to effectuate the Recapitalization. Lindsay Corby, our Executive Vice President and Chief Financial Officer, served as a Principal of BXM Holdings, Inc. at the time of the Recapitalization. BXM Holdings, Inc. no longer conducts any operations. At the time of the Recapitalization, Metropolitan owned five banking subsidiaries that operated under 12 different brand names in the Chicago metropolitan area.

We accounted for the Recapitalization as a business combination in accordance with Accounting Standards Codification Topic 805, Business Combinations (“ASC 805”). Accordingly, the assets acquired and liabilities assumed were recorded at their fair value on the date of acquisition. Fair value amounts were determined in accordance with the guidance provided in ASC Topic 820, Fair Value Measurements (“ASC 820”). In many cases, the determination of the fair value required management to make estimates about discount rates, future expected cash flows, market conditions and other future events that are highly subjective in nature. The transaction qualified for federal income tax purposes as a recapitalization under Section 368(a)(1)(E) of the Code and resulted in carryover treatment of the existing tax bases and tax loss carryforwards, although the utilization of tax attributes (including net operating loss carryforwards and tax credits) became subject to limitations under Sections 382 and 383 of the Code.

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Small Ticket Leasing Acquisition

On October 10, 2014, Byline Bank acquired certain assets and liabilities related to the small ticket leasing operation of Baytree National Bank and Trust Company and Baytree Leasing Company LLC (collectively, “Baytree”). The purchase was accounted for under the acquisition method of accounting in accordance with ASC 805 and resulted in lease financing receivables of $42.0 million and goodwill of $4.5 million. There are no contingent assets or liabilities remaining from the acquisition.

In a separate but related transaction, on September 3, 2014, Byline Bank purchased approximately $55.7 million of direct finance leases that Baytree had sold to a third party. We have grown our leasing portfolio to $181.5 million as of March 31, 2018.

Ridgestone Acquisition

On October 14, 2016, we completed the acquisition of Ridgestone Financial Services, Inc., under the terms of a definitive merger agreement (the “Ridgestone Agreement”). As of the acquisition date, Ridgestone had $447.4 million in assets, including $347.3 million of loans, $14.7 million of loans held for sale, $27.2 million of securities, $21.5 million of servicing assets and total deposits of $358.7 million. Ridgestone’s loan portfolio was primarily comprised of the retained unguaranteed portion of U.S. government guaranteed loans as a participant in the SBA and USDA lending programs. 

As a result of the acquisition, each share of Ridgestone common stock was converted into the right to receive, at the election of the stockholder and subject to proration under the terms of the Ridgestone Agreement, either cash or shares of the Company’s common stock, or a combination of both. Total consideration included aggregate cash consideration 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. There were no contingent assets or liabilities arising from the acquisition.

As a result of the Ridgestone acquisition, we:

• Grew consolidated total assets from $2.8 billion to $3.3 billion as of October 14, 2016, after giving effect to acquisition accounting adjustments;

• Increased total loans from $1.7 billion to $2.1 billion as of October 14, 2016;

• Increased total deposits from $2.2 billion to $2.6 billion as of October 14, 2016;

• Expanded our employee base from 684 full time equivalent employees to 834 full time equivalent employees as of October 14, 2016; and

• Expanded our footprint through the addition of 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) where we continue to operate.

We determined that the Ridgestone acquisition constituted a business combination as defined by ASC 805. Accordingly, the assets acquired and liabilities assumed were recorded at their fair value amount on the date of acquisition. Fair value was determined in accordance with the guidance provided in ASC 820. The fair values may be adjusted through the end of the measurement period, which closes at the earlier of the Company receiving all necessary information to complete the acquisition or one year from the date of acquisition. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017. The transaction qualified for federal income tax purposes as a recapitalization under Section 368(a)(1)(E) of the Code and resulted in carryover treatment of the existing tax bases and tax loss carryforwards, although the utilization of tax attributes (including net operating loss carryforwards and tax credits) became subject to limitations under Sections 382 and 383 of the Code.

First Evanston Acquisition

On November 27, 2017, the Company and First Evanston Bancorp, Inc. (“First Evanston”) entered into a definitive agreement and plan of merger pursuant to which the Company will acquire First Evanston through the merger of First Evanston with and into the Company, followed immediately by the merger of First Evanston’s wholly owned bank subsidiary, First Bank & Trust, with and into Byline Bank. First Bank & Trust is a commercial bank that operates 11 banking offices in the Chicago area. As of December 31, 2017, First Evanston had approximately $1.2 billion in total assets, $903.3 million in gross loans, and $1.0 billion in total deposits. The consideration to be paid by the Company will consist of $27.0

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million in cash with the remainder in Company stock (currently estimated at 6.7 million shares of common stock). We have received all required approvals and the merger is expected to close by the end of May 2018.

Strategic Branch Consolidation

We continually perform strategic reviews of our existing core banking footprint. With technology improvements and changes to customers’ banking preferences, we examine branch growth potential, customer usage, branch profitability, services provided, markets served and proximity to other locations with a goal of minimizing customer impact and deposit runoff. Since the Recapitalization, our branch network has been reduced from 88 to 56. In April 2018, we announced we have identified six branches and two other facilities within our current network that we believe can be consolidated with minimal impact on our customer service levels, convenience, and business development capabilities. We anticipate these consolidations to occur during June 2018. We will continue to strategically evaluate our locations based on our growth and profitability standards.

We plan to continue to leverage our seasoned management team, the attractive market opportunity in the Chicago metropolitan area, our diversified lending approach and our track record of successfully integrating acquisitions to drive future growth. We believe that having a deep understanding of customers, longstanding ties to the communities in which we operate, a strong market position and exceptional employees allows us to provide the attention, responsiveness and customized service our clients seek while offering a diverse range of products to serve a variety of needs.

Our Initial Public Offering

On June 29, 2017, we completed our initial public offering (the “IPO”) whereby we sold 4,630,194 shares of our common stock at a price to the public of $19.00 per share, resulting in net proceeds to us of $76.8 million after deducting offering related commissions and expenses. In addition, certain selling stockholders participated in the offering and sold an aggregate of 1,924,806 shares of our common stock at the same price per share. Our common stock is currently traded on the New York Stock Exchange under the symbol “BY.” We believe that the capital raised through our IPO will allow us to continue to grow our franchise and increase our market share among small businesses and middle-market companies in the markets we serve.

Critical Accounting Policies and Significant Estimates

Our accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) and conform to general practices within the industry in which we operate. To prepare financial statements and interim financial statements in conformity with GAAP, management makes estimates, assumptions and judgments based on available information. These estimates, assumptions and judgments affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions and judgements are based on information available as of the date of the financial statements and, as this information changes, actual results could differ from the estimates, assumptions and judgments reflected in the financial statements. In particular, management has identified several accounting policies that, due to the estimates, assumptions and judgements inherent in those policies, are critical in understanding our financial statements.

These critical accounting policies and estimates include (i) acquisition‑related fair value computations, (ii) the carrying value of loans and leases, (iii) determining the provision and allowance for loan and lease losses, (iv) the valuation of intangible assets such as goodwill, servicing assets and core deposit intangibles, (v) the determination of fair value for financial instruments, including other-than-temporary-impairment losses, (vi) the valuation of real estate held for sale and (vii) the valuation of or recognition of deferred tax assets and liabilities.

The Jumpstart Our Business Startups Act of 2012, or the JOBS Act, permits us an extended transition period for complying with new or revised accounting standards affecting public companies. We have elected to take advantage of this extended transition period, which means that the financial statements included in this report, as well as any financial statements that we file in the future, will not be subject to all new or revised accounting standards generally applicable to public companies for the transition period for so long as we remain an emerging growth company or until we affirmatively and irrevocably opt out of the extended transition period under the JOBS Act.

The following is a discussion of the critical accounting policies and significant estimates that require us to make complex and subjective judgments. Additional information about these policies can be found in Note 1 of our audited Consolidated Financial Statements as of December 31, 2017, 2016, and 2015, included in our Annual Report on Form 10-K that we filed with the Securities and Exchange Commission (“SEC”) on March 30, 2018.

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Business Combinations

We account for business combinations under the acquisition method of accounting in accordance with ASC 805. We recognize the fair value of the assets acquired and liabilities assumed as of the date of acquisition, with any excess of the fair value of consideration provided over the fair value of the identifiable net tangible and intangible assets acquired recorded as goodwill. Transaction costs are expensed as incurred. Application of the acquisition method requires extensive use of accounting estimates and judgements to determine the fair values of the identifiable assets acquired and liabilities assumed at the acquisition date.

In accordance with ASC 805, the acquiring company retains the right to make appropriate adjustments to the assets and liabilities of the acquired entity for information obtained during the measurement period about facts and circumstances that existed as of the acquisition date. The measurement period ends as of the earlier of (i) one year from the acquisition date or (ii) the date when the acquirer receives the information necessary to complete the business combination accounting.

Carrying Value of Loans and Leases

Our accounting methods for loans and leases differ depending on whether they are new or acquired loans and leases; and for acquired loans, whether the loans were acquired at a discount as a result of credit deterioration since the date of origination.

Originated Loans and Leases

We account for originated loans and leases and purchased loans and leases not acquired through business combinations as originated loans and leases. The new loans that management has the intent and ability to hold for the foreseeable future are reported at their outstanding principal balances net of any allowance for loan and lease losses, unamortized deferred fees and costs and unamortized premiums or discounts. The net amount of nonrefundable loan origination fees and certain direct costs associated with the lending process are deferred and amortized to interest income over the contractual lives of the new loans using methods which approximate the level yield method. Discounts and premiums are amortized or accreted to interest income over the estimated term of the new loans using methods that approximate the effective yield method. Interest income on new loans is accrued based on the unpaid principal balance outstanding.

Acquired Loans and Leases

Acquired loans and leases are recorded at fair value as of the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan and lease losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either acquired impaired or acquired non‑impaired. Acquired impaired loans reflect evidence of credit deterioration since origination for which it is probable that all contractually required principal and interest will not be collected by us. Subsequent to acquisition, we periodically update for changes in cash flow expectations, which is reflected in interest income over the life of the loan as accretable yield. Any subsequent decreases in expected cash flow attributable to credit deterioration are recognized by recording a provision for loan losses.

For acquired non‑impaired loans and leases, the excess or deficit of the loan and lease principal balance over the fair value is recorded as a discount or premium at acquisition and is accreted through interest income over the life of the loan or lease. Subsequent to acquisition, these loans and leases are evaluated for credit deterioration and a provision for loan and lease losses would be recorded when probable loss is incurred. These loans and leases are evaluated for impairment consistent with originated loans and leases.

Provision and Allowance for Loan and Lease Losses

The provision for loan and lease losses reflects the amount required to maintain the allowance for loan and lease losses (“ALLL”) at an appropriate level based upon management’s evaluation of the adequacy of general and specific loss reserves.

The ALLL is maintained at a level that management believes is appropriate to provide for known and inherent incurred loan and lease losses as of the date of the Consolidated Statements of Financial Condition, and we have established methodologies for the determination of its adequacy. The methodologies are set forth in a formal policy and take into consideration the need for an overall general valuation allowance as well as specific allowances that are determined on an individual loan basis. We increase our ALLL by charging provisions for probable losses against our income and decreased by charge‑offs, net of recoveries.

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The evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. While management uses available information to recognize losses on loans and leases, changes in economic or other conditions may necessitate revision of the estimate in future periods.

The ALLL is maintained at a level sufficient to provide for probable losses based upon an ongoing review of the originated and acquired non‑impaired loan and lease portfolios by portfolio category, which include consideration of actual loss experience, peer loss experience, changes in the size and risk profile of the portfolio, identification of individual problem loan and lease situations which may affect a borrower’s ability to repay, and evaluation of prevailing economic conditions.

For acquired impaired loans, a specific valuation allowance is established when it is probable that we will be unable to collect all of the cash flows expected at acquisition, plus the additional cash flows expected to be collected arising from changes in estimates after acquisition.

The originated and non‑impaired acquired loans have limited delinquency and credit loss history and have not yet exhibited an observable loss trend. The credit quality of loans in these loan portfolios are impacted by delinquency status and debt service coverage generated by the borrowers’ businesses and fluctuations in the value of real estate collateral.

Acquired non‑impaired loans and originated loans are considered impaired when, based on current information and events, it is probable that we will be unable to collect the scheduled payments of principal or interest when due, according to the contractual terms of the loan agreements. All acquired non‑impaired loans and originated loans of $100,000 or greater with an internal risk rating of substandard or below and on nonaccrual, as well as loans classified as troubled debt restructurings (“TDR”), are reviewed individually for impairment on a quarterly basis.

Goodwill and Other Intangible Assets

Goodwill

Goodwill represents the excess of the purchase consideration over the fair value of net assets acquired in connection with the Recapitalization and acquisitions using the acquisition method of accounting. Goodwill is not amortized but is periodically evaluated for impairment under the provisions of ASC Topic 350, Intangibles—Goodwill and Other (“ASC 350”).

Impairment testing is performed using either a qualitative or quantitative approach at the reporting unit level. Our goodwill is allocated to Byline Bank, which is our only applicable reporting unit for the purposes of testing goodwill for impairment. We have selected November 30 as the date to perform the annual goodwill impairment test. Additionally, we perform a goodwill impairment evaluation on an interim basis when events or circumstances indicate impairment potentially exists.

Servicing Assets

Servicing assets are recognized separately when they are acquired through sales of loans or when the rights to service loans are purchased. When loans are sold, servicing assets are recorded at fair value in accordance with ASC Topic 860, Transfers and Servicing (“ASC 860”). Fair value is based on market prices for comparable servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The fair value of servicing rights is highly sensitive to changes in underlying assumptions. Changes in the prepayment speed and discount rate assumptions have the most significant impact on the fair value of servicing rights. See Note 7 and Note 16 of our Unaudited Interim Condensed Consolidated Financial Statements as of March 31, 2018, included in this report, for additional information.

Core Deposit Intangible

Other intangible assets primarily consist of core deposit intangible assets. In valuing core deposit intangibles, we consider variables such as deposit servicing costs, attrition rates and market discount rates. Core deposit intangibles are reviewed annually, or more frequently when events or changes in circumstances occur that indicate that their carrying values may not be recoverable. If the recoverable amount of the core deposit intangibles is determined to be less than its carrying value, we would then measure the amount of impairment based on an estimate of the fair value at that time. We also evaluate whether the events or circumstances have occurred that warrant a revision to the remaining useful lives of intangible assets. In cases where a revision is deemed appropriate, the remaining carrying amounts of the intangible assets are amortized over the revised remaining useful life. Core deposit intangibles are currently amortized over a ten year period.

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Fair value of Financial Instruments

ASC Topic 820, Fair Value Measurement defines fair value as the price that would be received to sell a financial asset or paid to transfer a financial liability in an orderly transaction between market participants at the measurement date.

The degree of management judgment involved in determining the fair value of assets and liabilities is dependent upon the availability of quoted market prices or observable market parameters. For financial instruments that trade actively and have quoted market prices or observable market parameters, there is minimal subjectivity involved in measuring fair value. When observable market prices and parameters are not available, management judgment is necessary to estimate fair value. In addition, changes in market conditions may reduce the availability of quoted prices or observable data. For example, reduced liquidity in the capital markets or changes in secondary market activities could result in observable market inputs becoming unavailable. Therefore, when market data is not available, we would use valuation techniques requiring more management judgment to estimate the appropriate fair value measurement.

See Note 18 of Byline’s Consolidated Financial Statements as of December 31, 2017, 2016, and 2015, included in our Form 10-K, for a complete discussion of our use of fair value of financial assets and liabilities and their related measurement practices.

Valuation of Real Estate Held for Sale

Other Real Estate Owned (OREO)

OREO includes real estate assets that have been acquired through, or in lieu of, loan foreclosure or repossession and are to be sold. OREO assets are initially recorded at fair value, less estimated costs to sell, of the collateral of the loan, on the date of foreclosure or repossession, establishing a new cost basis. Adjustments that reduce loan balances to fair value at the time of foreclosure or repossession are recognized as charge‑offs in the allowance for loan and lease losses. Positive adjustments, if any, at the time of foreclosure or repossession are recognized in non‑interest expense. After foreclosure or repossession, management periodically obtains new valuations and real estate or other assets may be adjusted to a lower carrying amount, determined by the fair value of the asset, less estimated costs to sell. Any subsequent write‑downs are recorded as a decrease in the asset and charged against other real estate owned valuation adjustments. Operating expenses of such properties, net of related income, are included in non‑interest expense, and gains and losses on their disposition are included in non‑interest expense. Gains on internally financed other real estate owned sales are accounted for in accordance with the methods stated in ASC Topic 360‑20, Real Estate Sales (“ASC 360‑20”). Any losses on the sales of other real estate owned properties are recognized immediately.

Assets Held for Sale

Assets held for sale consist of former branch locations and real estate purchased for expansion. Assets are considered held for sale when management has approved a plan 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 at the lower of its carrying value or its fair value, less estimated costs to sell. Adjustments to reduce the asset balances to fair value are recorded at the time of transfer and are recognized through a charge against income. An assessment of the recoverability of other long-lived assets associated with all branches is periodically performed, resulting in impairment losses which are reflected in non-interest expense.

Income Taxes

We use the asset and liability method to account for income taxes. The objective of the asset and liability method is to establish deferred tax assets and liabilities for the temporary differences between the financial reporting basis and the income tax basis of our assets and liabilities at enacted tax rates expected to be in effect when such amounts are realized or settled. Our annual tax rate is based on our income, statutory tax rates and available tax planning opportunities. Tax laws are complex and subject to different interpretations by the taxpayer and respective governmental taxing authorities. Significant judgment is required in determining tax expense and in evaluating tax positions, including evaluating uncertainties.

Deferred income tax assets represent amounts available to reduce income taxes payable on taxable income in future years. Such assets arise because of temporary differences between the financial reporting and tax bases of assets and liabilities, as well as from net operating loss carryforwards. We review our deferred tax positions quarterly for changes which may impact realizability. We evaluate the recoverability of these future tax deductions by assessing the adequacy of future expected taxable income from all sources, including reversal of taxable temporary differences, forecasted operating earnings and available tax planning strategies. We use short and long‑range business forecasts to provide additional information for its

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evaluation of the recoverability of deferred tax assets. It is our policy to recognize interest and penalties associated with uncertain tax positions, if applicable, as components of non‑interest expense.

A deferred tax valuation allowance is established to reduce the net carrying amount of deferred tax assets if it is determined to be more likely than not that all or some of the deferred tax asset will not be realized. See Note 11 of our Consolidated Financial Statements as of December 31, 2017, 2016, and 2015, included in our Annual Report on Form 10-K, for further information on income taxes.

Recently Issued Accounting Pronouncements

Refer to Note 2 of our Interim Unaudited Condensed Consolidated Financial Statements as of March 31, 2018, included in this report, for a description of recent accounting pronouncements, including the effective dates of adoption and anticipated effects on our results of operations and financial condition.

Primary Factors Used to Evaluate Our Business

As a financial institution, we manage and evaluate various aspects of both our results of operations and our financial condition. We evaluate the levels and trends of the line items included in our consolidated balance sheet and income statement as well as various financial ratios that are commonly used in our industry. We analyze these ratios and financial trends against our own historical performance, our budgeted performance and the final condition and performance of comparable financial institutions in our region. Comparison of our financial performance against other financial institutions is impacted by the accounting for acquired non‑impaired and acquired impaired loans.

These factors and metrics described in this prospectus may not provide an appropriate basis to compare our results or financial condition to the results or financial condition of other financial services companies, given our limited operating history and strategic acquisitions since the Recapitalization.

Results of Operations

Overview

Our results of operations depend substantially on net interest income, which is the difference between interest income on interest-earning assets, consisting primarily of interest income on loans and lease receivables, including accretion income on loans and leases, investment securities and other short-term investments, and interest expense on interest-bearing liabilities, consisting primarily of deposits and borrowings. Our results of operations are also dependent upon our generation of non-interest income, consisting primarily of income from fees and service charges on deposits, servicing fees, ATM and interchange fees, and net gains on sales of investment securities and loans. Other factors contributing to our results of operations include our provisions for loan and lease losses, provision for income taxes, and non-interest expenses, such as salaries and employee benefits, occupancy and equipment expenses and other miscellaneous operating costs.

Our first quarter 2018 results reflect solid growth in net interest income and an expanding net interest margin, offset by higher credit costs primarily related to a single commercial relationship. Net interest margin improved to 4.45% for the first quarter of 2018, compared to 4.00% for the first quarter of 2017. Our total revenues increased by approximately 7.8% compared to the first quarter of 2017, driven primarily by increased loan and lease yields.

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Selected Financial Data

	As of or For the Three Months Ended March 31,
(dollars in thousands, except share and per share data)	2018			2017
Summary of Operations
Net interest income	$	33,695		$	29,538
Provision for loan and lease losses		5,115			1,891
Non-interest income		11,428			12,308
Non-interest expense		31,919			28,851
Income before provision for income taxes		8,089			11,104
Provision for income taxes		1,321			4,544
Net income		6,768			6,560
Dividends on preferred shares		193			189
Income available to common stockholders	$	6,575		$	6,371
Earnings per Common Share
Basic earnings per common share	$	0.22		$	0.26
Diluted earnings per common share	$	0.22		$	0.25
Weighted average common shares outstanding (basic)		29,291,179			24,616,706
Weighted average common shares outstanding (diluted)		29,913,633			25,078,427
Common shares outstanding		29,404,048			24,616,706
Key Ratios (annualized where applicable)
Net interest margin		4.45	%		4.00	%
Cost of deposits		0.41	%		0.24	%
Efficiency ratio(1)		69.04	%		67.11	%
Non-interest income to total revenues(2)		25.33	%		29.41	%
Non-interest expense to average assets		3.85	%		3.53	%
Return on average stockholders' equity		5.97	%		6.83	%
Return on average assets		0.82	%		0.80	%
Pre-tax pre-provision return on average assets(2)		1.59	%		1.59	%
Non-interest bearing deposits to total deposits		29.70	%		28.43	%
Deposits per branch	$	45,081		$	45,190
Loans and leases held for sale and loans and lease held for investment to total deposits		90.66	%		84.13	%
Deposits to total liabilities		84.17	%		88.97	%
Tangible book value per common share(2)	$	12.99		$	11.91
Asset Quality Ratios
Non-performing loans and leases to total loan and leases held for investment, net before ALLL		1.08	%		0.41	%
ALLL to total loans and leases held for investment, net before ALLL		0.77	%		0.55	%
Net charge-offs to average total loans and leases held for investment, net before ALLL		0.75	%		0.19	%
Acquisition accounting adjustments(3)	$	28,058		$	41,024
Capital Ratios
Common equity to assets		13.07	%		11.09	%
Tangible common equity to tangible assets(2)		11.26	%		9.12	%
Leverage ratio		12.14	%		9.59	%
Common equity tier 1 capital ratio		13.49	%		10.85	%
Tier 1 capital ratio		15.30	%		12.94	%
Total capital ratio		16.05	%		13.49	%

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(1) Represents non-interest expense less amortization of intangible assets divided by net interest income and non-interest income.

(2) Represents a non-GAAP financial measure. See “Reconciliation of non-GAAP Financial Measures” for a reconciliation of our non-GAAP measures to the most directly comparable GAAP financial measure.

(3) Represents the remaining unamortized premium or unaccreted discount as a result of applying the fair value acquisition accounting adjustment at the time of the business combination on acquired loans.  

We reported consolidated net income for the three months ended March 31, 2018 of $6.8 million compared to net income of $6.6 million for the three months ended March 31, 2017, an increase of $208,000. The increase in net income was primarily attributable to a $4.2 million increase in net interest income and a $3.2 million decrease in provision for income taxes, offset by a $3.1 million increase in non-interest expense, a $3.2 million increase in provision for loan and lease losses, and an $879,000 decrease in non-interest income. The increase in net interest margin during the three months ended March 31, 2018 was primarily driven by increased loan and lease yields during the quarter, and the decrease in provision for income taxes was primarily driven by a decrease in the federal corporate income tax rate as a result of federal tax reform. The increase in provision for loan and lease losses was mainly due to an increase in a specific reserve on a commercial loan relationship, slight credit deterioration in the government guaranteed acquired non-credit impaired portfolio, and an increase to the general reserve driven by new loan originations. The increase in non-interest expense was primarily due to an increase in salaries and employee benefits of $1.7 million as a result of merit increases, organizational growth, higher payroll taxes, and increased employer costs related to benefits, as well as an increase in loan and lease related expenses of $523,000 associated with loan originations during the quarter.

Net income available to common stockholders was $6.6 million or $0.22 per basic and diluted common share for the three months ended March 31, 2018, compared to $6.4 million or $0.26 per basic common share and $0.25 per diluted common share for the three months ended March 31, 2017. Dividends on preferred shares were $193,000 for the three months ended March 31, 2018 compared to $189,000 for the three months ended March 31, 2017.

Our annualized return on average assets for the three months ended March 31, 2018 was 0.82% compared to 0.80% for the three months ended March 31, 2017. Our annualized return on stockholders’ equity was 5.97% for the three months ended March 31, 2018 compared to 6.83% for the three months ended March 31, 2017.  

Net Interest Income

Net interest income, representing interest income less interest expense, is a significant contributor to our revenues and earnings. We generate interest income from interest and dividends on interest-earning assets, which include loans, leases and investment securities we own. We incur interest expense from interest paid on interest-bearing liabilities, which include interest-bearing deposits, FHLB advances, junior subordinated debentures and other borrowings. To evaluate net interest income, we measure and monitor (i) yields on our loans and other interest-earning assets, (ii) the costs of our deposits and other funding sources, (iii) our net interest spread, and (iv) our net interest margin. Net interest spread is the difference between rates earned on interest-earning assets and rates paid on interest-bearing liabilities. Net interest margin is calculated as the annualized net interest income divided by average interest-earning assets. Because non-interest-bearing sources of funds, such as non-interest-bearing deposits and stockholders’ equity, also fund interest-earning assets, net interest margin includes the benefit of these non-interest-bearing sources.

We also recognize income from the accretable discounts associated with the purchase of interest-earning assets. Because of the Recapitalization and the acquisition of Ridgestone, we derive a portion of our interest income from the accretable discounts on acquired loans. The accretion is recognized over the life of the loan and is impacted by changes in expected cash flows on the loan. This accretion will continue to have an impact on our net interest income as long as loans acquired with evidence of credit deterioration at acquisition represent a meaningful portion of our interest-earning assets. As of March 31, 2018, acquired loans with evidence of credit deterioration accounted for under ASC Topic 310-30, Accounting for Purchased Loans with Deteriorated Credit Quality, represented 13.7% of our total loan portfolio.

Changes in the market interest rates and interest rates we earn on interest-earning assets or pay on interest-bearing liabilities, as well as the volume and types of interest-earning assets, interest-bearing and non-interest-bearing liabilities, are usually the largest drivers of periodic changes in net interest spread, net interest margin and net interest income. In addition, our interest income includes the accretion of the discounts on our acquired loans, which will also affect our net interest spread, net interest margin and net interest income.

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The following table presents, for the periods indicated, information about (i)  average balances, the total dollar amount of interest income from interest-earning assets and the resultant average yields; (ii) average balances, the total dollar amount of interest expense on interest-bearing liabilities and the resultant average rates; (iii) net interest income; (iv) the interest rate spread; and (v) the net interest margin. Yields have been calculated on a pre-tax basis (dollars in thousands).  

	Three Months Ended March 31,
	2018								2017
	Average Balance(5)			Interest Inc / Exp		Average Yield / Rate			Average Balance(5)			Interest Inc / Exp		Average Yield / Rate
ASSETS
Cash and cash equivalents	$	38,490		$	80		0.85	%	$	35,864		$	48		0.54	%
Loans and leases(1)		2,275,274			33,654		6.00	%		2,194,984			28,396		5.25	%
Securities available-for-sale		628,879			3,623		2.34	%		623,144			3,210		2.09	%
Securities held-to-maturity		101,834			611		2.43	%		122,134			701		2.33	%
Tax-exempt securities(2)		27,480			174		2.57	%		18,436			133		2.93	%
Total interest-earning assets	$	3,071,957		$	38,142		5.04	%	$	2,994,562		$	32,488		4.40	%
Allowance for loan and lease losses		(17,360	)							(11,160	)
All other assets		307,474								331,693
TOTAL ASSETS	$	3,362,071							$	3,315,095
LIABILITIES AND STOCKHOLDERS’    EQUITY
Deposits
Interest checking	$	186,686		$	38		0.08	%	$	181,903		$	27		0.06	%
Money market accounts		345,545			370		0.43	%		367,273			212		0.23	%
Savings		436,935			76		0.07	%		446,891			79		0.07	%
Time deposits		733,753			2,014		1.11	%		790,566			1,165		0.60	%
Total interest-bearing deposits		1,702,919			2,498		0.59	%		1,786,633			1,483		0.34	%
Federal Home Loan Bank advances		363,540			1,358		1.52	%		301,375			660		0.89	%
Other borrowed funds		56,471			591		4.25	%		69,841			807		4.69	%
Total borrowings		420,011			1,949		1.88	%		371,216			1,467		1.60	%
Total interest-bearing liabilities	$	2,122,930		$	4,447		0.85	%	$	2,157,849		$	2,950		0.55	%
Non-interest bearing demand deposits		743,827								716,162
Other liabilities		35,779								51,443
Total stockholders’ equity		459,535								389,641
TOTAL LIABILITIES AND STOCKHOLDERS’    EQUITY	$	3,362,071							$	3,315,095
Net interest spread(3)							4.19	%							3.85	%
Net interest income				$	33,695							$	29,538
Net interest margin(4)							4.45	%							4.00	%
Net loan accretion impact on margin				$	2,336		0.31	%				$	1,710		0.23	%
Net interest margin excluding accretion(6)							4.14	%							3.77	%

(1) Loan and lease balances are net of deferred origination fees and costs and initial direct costs. Non-accrual loans and leases are included in total loan and lease balances.

(2) Interest income and rates exclude the effects of a tax equivalent adjustment to adjust tax exempt investment income on tax exempt investment securities to a fully taxable basis due to immateriality.

(3) Represents the average rate earned on interest-earning assets minus the average rate paid on interest-bearing liabilities.

(4) Represents net interest income (annualized) divided by total average earning assets.

(5) Average balances are average daily balances.

(6)   Represents a non-GAAP financial measure. See “Reconciliation of non-GAAP Financial Measures” for a reconciliation of our non-GAAP measures to the most directly comparable GAAP financial measure.

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Increases and decreases in interest income and interest expense result from changes in average balances (volume) of interest-earning assets and interest-bearing liabilities, as well as changes in average interest rates. The following table sets forth the effects of changing rates and volumes on our net interest income during the periods shown. Information is provided with respect to (i) effects on interest income attributable to changes in volume (changes in volume multiplied by prior rate) and (ii) effects on interest income attributable to changes in rate (changes in rate multiplied by prior volume). Changes applicable to both volume and rate have been allocated to volume. Yields have been calculated on a pre-tax basis. The table below is a summary of increases and decreases in interest income and interest expense resulting from changes in average balances (volume) and changes in average interest rates (dollars in thousands):

	Three Months Ended March 31, 2018 compared to Three Months Ended March 31, 2017
	Increase (Decrease) Due to
	Volume			Rate			Total
Interest income
Cash and cash equivalents	$	6		$	26		$	32
Loans and leases(1)		1,188			4,070			5,258
Securities available-for-sale		33			380			413
Securities held-to-maturity		(121	)		31			(90	)
Tax-exempt securities		57			(16	)		41
Total interest income	$	1,163		$	4,491		$	5,654
Interest expense
Deposits
Interest checking	$	1		$	10		$	11
Money market accounts		(23	)		181			158
Savings		(2	)		(1	)		(3	)
Time deposits		(156	)		1,005			849
Total interest-bearing deposits		(180	)		1,195			1,015
Federal Home Loan Bank advances		232			466			698
Other borrowed funds		(141	)		(75	)		(216	)
Total borrowings		91			391			482
Total interest expense	$	(89	)	$	1,586		$	1,497
Net interest income	$	1,252		$	2,905		$	4,157

(1) Includes loans and leases on non-accrual status.

Net interest income for the three months ended March 31, 2018 was $33.7 million compared to $29.5 million during the same period in 2017, an increase of $4.2 million, or 14.1%. The increase in interest income of $5.7 million was primarily a result of an increase in average yield and volume on loans and leases as well as an increase in average yield on securities available-for-sale. Interest expense increased by $1.5 million for the three months ended March 31, 2018 compared to the three months ended March 31, 2017, primarily due to additional FHLB advances and an increase in the average costs of time deposits.  

The net interest margin for the three months ended March 31, 2018 was 4.45%, an increase of 45 basis points compared to 4.00% for the three months ended March 31, 2017. The primary driver of the increase for the three month period was due to an increase in average loan and lease yields and an increase in loan accretion income. Net loan accretion income was $2.3 million for the three months ended March 31, 2018 compared to $1.7 million for the three months ended March 31, 2017. Total net loan accretion on acquired loans contributed 31 basis points to the net interest margin for the three months ended March 31, 2018, compared to 23 basis points for the three months ended March 31, 2017.

Provision for Loan and Lease Losses

The provision for loan and lease losses represents a charge to earnings necessary to establish an allowance for loan and lease losses that, in management’s evaluation, is appropriate to provide coverage for probable losses incurred in the loan and

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lease portfolio. The allowance for loan and lease losses is increased by the provision for loan and lease losses and is decreased by charge-offs, net of recoveries on prior charge-offs.

Provisions for loan and lease losses totaled $5.1 million and $1.9 million for the three months ended March 31, 2018 and 2017, respectively, an increase of $3.2 million. This increase was mainly due to an increase in a specific reserve on a commercial loan relationship, slight credit deterioration in the government guaranteed acquired non-credit impaired portfolio, and an increase to the general reserve driven by growth in the commercial loan portfolio for the three months ended March 31, 2018. The increases were offset by a slight decrease in the provision allocation to the lease portfolio.

The ALLL as a percentage of loans and leases, net of acquisition accounting adjustments, increased from 0.73% at December 31, 2017, to 0.77% at March 31, 2018. The increase was primarily due a change in loan and lease composition as the originated portfolio increased by $45.4 million to $1.6 billion at March 31, 2018, while the acquired portfolio decreased by $42.4 million for the same period.    

Non-Interest Income

We reported non-interest income of $11.4 million and $12.3 million for the three months ended March 31, 2018 and 2017, respectively. The decrease of $880,000 was primarily due to a decrease in gains on sales of government guaranteed loans through our Small Business Capital operations of $606,000 for the three months ended March 31, 2018 compared to the same period in 2017. The gains on sale of loans were $7.5 million for the three months ended March 31, 2018, compared to $8.1 million for the three months ended March 31, 2017. This was partially offset by an increase in other non-interest income of $127,000 primarily due to a gain on sale of an asset held for sale during the first quarter of 2018.

	For the Three Months Ended March 31,
	2018		2017
Fees and service charges on deposits	$	1,312	$	1,219
Net servicing fees		563		919
ATM and interchange fees		1,218		1,348
Net gains on sales of securities available-for-sale		—		8
Net gains on sales of loans		7,476		8,082
Other non-interest income		859		732
Total non-interest income	$	11,428	$	12,308

Service charges and fees represent fees charged to customers for banking services, such as fees on deposit accounts, and include, but are not limited to, maintenance fees, insufficient fund fees, overdraft protection fees, wire transfer fees and other fees. Fees and service charges on deposits increased $93,000 for the three months ended March 31, 2018 compared to the same period in 2017, primarily driven by a decrease in manually waived fees.    

While portions of the loans that we originate are sold and generate gain on sale revenue, servicing rights for the majority of loans that we sell are retained by Byline Bank. In exchange for continuing to service loans that have been sold, Byline Bank receives a servicing fee paid from a portion of the interest cash flow of the loan. Small Business Capital generated $563,000 in servicing fees on the sold portion of the government guaranteed portfolio for the three months ended March 31, 2018, compared to $919,000 in servicing fees during the three months ended March 31, 2017. The decrease of $356,000 is primarily driven by a decrease in the average servicing asset.  

ATM and interchange fee income decreased by $130,000 for the three months ended March 31, 2018 compared to the three months ended March 31, 2017, primarily driven by a revision to our assessment schedule.

We had no securities sales during the first quarter of 2018 and minimal securities sales during the first quarter of 2017.  As a result, gains on sales of securities were $8,000 for the three months ended March 31, 2017.

Net gains on sales of loans decreased by $606,000 for the three months ended March 31, 2018 compared to the three months ended March 31, 2017, primarily driven by a lower average premium.

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Other non-interest income was $859,000 for the three months ended March 31, 2018, which is an increase of 17.4% compared to $732,000 for the three months ended March 31, 2017. The primary driver of the increase was an $189,000 gain on sale of an asset held for sale during the first quarter of 2018, partially offset by a decrease in customer swap fee income.

Non-Interest Expense

Non-interest expense for the three months ended March 31, 2018 was $31.9 million compared to $28.9 million for the three months ended March 31, 2017, an increase of $3.1 million or 10.6%.

The following table presents the major components of our non-interest expense for the periods indicated (dollars in thousands):

	For the Three Months Ended March 31,
	2018			2017
Salaries and employee benefits	$	18,278		$	16,602
Occupancy expense, net		3,755			3,739
Equipment expense		603			563
Loan and lease related expenses		1,400			877
Legal, audit and other professional fees		1,851			1,671
Data processing		2,301			2,409
Net gain recognized on other real estate owned and other related expenses		(1	)		(570	)
Regulatory assessments		241			184
Other intangible assets amortization expense		767			769
Advertising and promotions		249			289
Telecommunications		418			418
Other non-interest expense		2,057			1,900
Total non-interest expense	$	31,919		$	28,851

Salaries and employee benefits, the single largest component of our non-interest expense, totaled $18.3 million for the three months ended March 31, 2018 compared to $16.6 million for the three months ended March 31, 2017, an increase of $1.7 million or 10.1%. This increase is primarily due to merit increases, organizational growth, and increased employer costs related to benefits. Our staffing increased from 844 full-time equivalent employees as of March 31, 2017 to 853 as of March 31, 2018.  

Occupancy expense for the three months ended March 31, 2018 was $3.8 million compared to $3.7 million for the three months ended March 31, 2017, an increase of $16,000 or 0.4%. The increase in occupancy expense for the three months ended March 31, 2018 was primarily a result of an increase in building maintenance expense offset by a decrease in real estate taxes.

Equipment expense for three months ended March 31, 2018 was $603,000 compared to $563,000 for the three months ended March 31, 2017, an increase of $40,000 or 7.1%. The increase was primarily due to increased depreciation expense related to increased investment in equipment and technology assets.

Loan and lease related expenses for the three months ended March 31, 2018 were $1.4 million compared to $877,000 for the three months ended March 31, 2017, an increase of $523,000 or 59.7%. The increase was associated with loan originations during the quarter, partially offset by lower collection expenses for problem loans.

Legal, audit and other professional fees for the three months ended March 31, 2018 were $1.9 million compared to $1.7 million for the three months ended March 31, 2017, an increase of $180,000 or 10.7%. The increase was primarily driven by increased legal and professional fees of $123,000 related to our acquisition related activity.

Data processing expense for the three months ended March 31, 2018 was $2.3 million compared to $2.4 million for the three months ended March 31, 2017, a decrease of $108,000, or 4.5%. The decrease was primarily due to our continued branch optimization strategy.

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Net gain recognized on other real estate owned and other related expenses were $1,000 for the three months ended March 31, 2018 compared to $570,000 for three months ended March 31, 2017, a decrease of $569,000 or 99.8%. The decrease was primarily due to a decreased volume of sales of other real estate owned properties.  

Regulatory assessments for the three months ended March 31, 2018 were $241,000 compared to $184,000 for the three months ended March 31, 2017, an increase of $57,000 or 31.2%. The increase was primarily due to our increased asset size, offset by our improved risk profile as a result of improved financial ratios and performance.

Advertising and promotions for the three months ended March 31, 2018 were $249,000 compared to $289,000 for the three months ended March 31, 2017, a decrease of $40,000 or 13.9%, primarily due to a decrease in advertising and promotions attributable to our Small Business Capital operations.

Telecommunications expense was $418,000 for the three months ended March 31, 2018 and 2017.

Other non-interest expense for the three months ended March 31, 2018 was $2.1 million compared to $1.9 million for the three months ended March 31, 2017, an increase of $157,000 or 8.3%. The increase includes an increase of $63,000 in provision for unfunded commitments due to growth in our unfunded loan commitments.  

Our efficiency ratio was 69.04% for the three months ended March 31, 2018, compared to 67.11% for the three months ended March 31, 2017.

Income Taxes

Income tax expense was $1.3 million for the three months ended March 31, 2018 compared to $4.5 million for the three months ended March 31, 2017. The decrease in income tax expense was primarily due to the “H.R. 1”, commonly known as the “Tax Cuts and Jobs Act” (“Tax Act”), which was signed into law on December 22, 2017. Among other items, the law reduced the federal corporate income tax rate to 21% effective January 1, 2018. As a result of the new 21% corporate federal tax rate, the Company expects its effective tax rate for 2018 to be between approximately 27% and 29%.

Also on December 22, 2017, the SEC issued Staff Accounting Bulletin 118 (“SAB 118”), which provides guidance on accounting for the Tax Act’s impact. SAB 118 provides a measurement period, not to extend beyond one year from the date of enactment during which a company, acting in good faith, may complete the accounting for the impacts of the Tax Act. At March 31, 2018, the Company’s accounting for the impact of the Tax Act on its net deferred tax assets is based upon reasonable estimates of the tax effects of the Tax Act; however, these estimates may change as additional information and interpretive guidance regarding the provisions of the Tax Act become available. As a result of the rate change, the Company’s net deferred tax assets were required to be revalued, and we recorded net income tax benefit of $724,000 during the first quarter of 2018.

Financial Condition

Balance Sheet Analysis

Our total assets increased by $96.2 million, or 2.9%, to $3.5 billion at March 31, 2018, compared to December 31, 2017. The increase in total assets includes an increase of $2.9 million, or 0.1%, in loans and leases, an increase in investment securities of $37.9 million, and an increase in interest bearing deposits with other banks of $71.7 million. These increases were partially offset by a decrease in due from counterparty, which decreased $19.8 million.    

Investment Portfolio

The investment securities portfolio consists of securities classified as available-for-sale and held-to-maturity. There were no trading securities in our investment portfolio as of March 31, 2018 or December 31, 2017. All available-for sale securities are carried at fair value and may be used for liquidity purposes should management consider it to be in our best interest. Securities available-for-sale consist primarily of residential mortgage-backed securities, commercial mortgage- backed securities and U.S. government agencies securities.

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Securities available-for-sale increased $42.8 million, from $583.2 million at December 31, 2017 to $626.1 million at March 31, 2018. The increase was primarily due to additional purchases of agency, mortgage-backed, and U.S. Treasury securities during the quarter.

Our held-to-maturity securities portfolio consists of mortgage-backed securities and obligations of states, municipalities and political subdivisions. We carry these securities at amortized cost, and at March 31, 2018 totaled $112.3 million compared to $117.2 million at December 31, 2017, a decrease of $4.9 million, or 4.2%, primarily due to principal paydowns received during the quarter.  

We had no securities that were classified as having other-than-temporary-impairment at March 31, 2018 or December 31, 2017.

The following table summarizes the fair value of the available-for-sale and held-to-maturity securities portfolio as of the dates presented (dollars in thousands):

	March 31, 2018				December 31, 2017
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Available-for-sale
U.S. Treasury Notes	$	22,934	$	22,741	$	14,999	$	14,863
U.S. Government agencies		64,293		62,621		54,248		52,958
Obligations of states, municipalities, and political    subdivisions		32,876		32,148		33,405		33,170
Residential mortgage-backed securities
Agency		321,957		309,050		315,103		307,457
Non-agency		55,341		54,274		39,485		39,514
Commercial mortgage-backed securities
Agency		76,866		74,127		70,964		69,043
Non-agency		31,688		30,344		31,763		30,971
Corporate securities		35,257		35,363		29,573		29,976
Other securities		3,628		5,389		3,627		5,284
Total	$	644,840	$	626,057	$	593,167	$	583,236

	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	23,982	$	23,691	$	24,030	$	24,145
Residential mortgage-backed securities
Agency		49,946		49,124		53,731		53,607
Non-agency		38,338		37,604		39,402		39,525
Total	$	112,266	$	110,419	$	117,163	$	117,277

The Company did not classify securities as trading during three months ended March 31, 2018  or during 2017.

Certain securities have fair values less than amortized cost and, therefore, contain unrealized losses. At March 31, 2018, we evaluated the securities which had an unrealized loss for other than temporary impairment and determined all declines in value to be temporary. There were 171 investment securities with unrealized losses at March 31, 2018. We anticipate full recovery of amortized cost with respect to these securities by maturity, or sooner in the event of a more favorable market interest rate environment. We do not intend to sell these securities and it is not more likely than not that we will be required to sell them before recovery of their amortized cost basis, which may be at maturity.

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The following table (dollars in thousands) sets forth certain information regarding contractual maturities and the weighted average yields of our investment securities as of the dates presented. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties.

	Maturity as of March 31, 2018
	Due in One Year or Less					Due from One to  Five Years					Due from Five to Ten Years					Due after Ten Years
	Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)
Available-for-sale
U.S. Treasury Notes	$	-		0.00	%	$	22,934		1.84	%	$	—		0.00	%	$	—		0.00	%
U.S. government agencies		3,001		1.06	%		46,265		1.66	%		15,027		2.26	%		—		0.00	%
Obligations of states,    municipalities, and political    subdivisions		200		2.48	%		4,568		2.77	%		17,102		2.48	%		11,006		3.18	%
Residential mortgage-backed    securities
Agency		—		0.00	%		—		0.00	%		22,296		1.62	%		299,661		2.16	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		55,341		3.26	%
Commercial mortgage-backed    securities
Agency		—		0.00	%		—		0.00	%		18,768		2.70	%		58,098		2.20	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		31,688		2.61	%
Corporate securities		2,494		3.78	%		14,996		4.47	%		15,267		3.86	%		2,500		4.38	%
Other securities		—		0.00	%		—		0.00	%		—		0.00	%		3,628		4.35	%
Total	$	5,695		2.30	%	$	88,763		2.24	%	$	88,460		2.51	%	$	461,922		2.38	%

	Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)
Held-to-maturity
Obligations of states,    municipalities, and political     subdivisions	$	—		0.00	%	$	3,523		2.15	%	$	11,706		2.59	%	$	8,753		2.82	%
Residential mortgage-backed     securities
Agency		—		0.00	%		—		0.00	%		—		0.00	%		49,946		2.24	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		38,338		3.35	%
Total	$	—		0.00	%	$	3,523		2.15	%	$	11,706		2.59	%	$	97,037		2.73	%

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	Maturity as of December 31, 2017
	Due in One Year or Less					Due from One to  Five Years					Due from Five to Ten Years					Due after Ten Years
	Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)
Available-for-sale
U.S. Treasury Notes	$	4,999		1.04	%	$	10,000		1.21	%	$	—		0.00	%	$	—		0.00	%
U.S. government agencies		3,001		1.06	%		41,247		1.50	%		10,000		1.74	%		—		0.00	%
Obligations of states,    municipalities, and political    subdivisions		285		3.30	%		4,902		2.92	%		17,149		2.48	%		11,069		3.18	%
Residential mortgage-backed    securities
Agency		—		0.00	%		—		0.00	%		15,855		1.62	%		299,248		2.01	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		39,485		3.12	%
Commercial mortgage-backed    securities
Agency		—		0.00	%		—		0.00	%		11,557		1.98	%		59,407		2.19	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		31,763		2.61	%
Corporate securities		—		0.00	%		16,283		4.44	%		13,290		3.67	%		—		0.00	%
Other securities		—		0.00	%		—		0.00	%		—		0.00	%		3,627		3.63	%
Total	$	8,285		1.13	%	$	72,432		2.22	%	$	67,851		2.32	%	$	444,599		2.22	%

	Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)			Amortized Cost		Weighted Average Yield(1)
Held-to-maturity
Obligations of states,    municipalities, and political    subdivisions	$	—		0.00	%	$	1,719		2.20	%	$	13,532		2.53	%	$	8,779		2.82	%
Residential mortgage-backed    securities
Agency		—		0.00	%		—		0.00	%		—		0.00	%		53,731		2.20	%
Non-agency		—		0.00	%		—		0.00	%		—		0.00	%		39,402		3.29	%
Total	$	—		0.00	%	$	1,719		2.20	%	$	13,532		2.53	%	$	101,912		2.67	%

(1) The weighted average yields are based on amortized cost.

Total non-taxable securities classified as obligations of states, municipalities and political subdivisions were $26.3 million at March 31, 2018, an increase of $8.5 million from December 31, 2017.

There were no holdings of securities of any one issuer, other than U.S. government-sponsored entities and agencies, with total outstanding balances greater than 10% of our stockholders’ equity as of March 31, 2018 or December 31, 2017.

Restricted Stock

As a member of the Federal Home Loan Bank system, our bank is required to maintain an investment in the capital stock of the FHLB. No market exists for this stock, and it has no quoted market value. The stock is redeemable at par by the FHLB and is, therefore, carried at cost. In addition, our bank owns stock of Bankers’ Bank that was acquired as part of the Ridgestone acquisition. The stock is redeemable at par and carried at cost. As of March 31, 2018 and December 31, 2017, we held approximately $17.2 million and $16.3 million, respectively, in FHLB and Bankers’ Bank stocks. We evaluate impairment of our investment in FHLB and Bankers’ Bank based on the ultimate recoverability of the par value rather than by recognizing temporary declines in value. We did not identify any indicators of impairment of FHLB and Bankers’ Bank stock as of March 31, 2018 and December 31, 2017.

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Loan and Lease Portfolio

Lending-related income is the most important component of our net interest income and is the main driver of the results of our operations. Total loans and leases at March 31, 2018 were $2.3 billion, an increase of $2.9 million compared to December 31, 2017.  Our originated loan and lease portfolio increased $45.4 million, offset by a decrease in the acquired loan and lease portfolio of $42.4 million, during the first three months of 2018. The growth in the originated loan and lease portfolio was primarily driven by increases in commercial and industrial loans and leases, partially offset by decreases in commercial real estate loans.

We strive to maintain a relatively diversified loan portfolio to help reduce the risk inherent in concentration in certain types of collateral. The following table shows our allocation of originated, acquired impaired and acquired non-impaired loans as of the dates presented (dollars in thousands):  

	March 31, 2018						December 31, 2017
	Amount			% of Total			Amount			% of Total
Originated loans
Commercial real estate	$	485,324			21.3	%	$	513,622			22.5	%
Residential real estate		397,516			17.4	%		400,571			17.6	%
Construction, land development, and other land		110,092			4.8	%		97,638			4.3	%
Commercial and industrial		470,689			20.6	%		416,499			18.3	%
Installment and other		3,645			0.2	%		3,724			0.2	%
Leasing financing receivables		151,468			6.7	%		141,329			6.2	%
Total originated loans	$	1,618,734			71.0	%	$	1,573,383			69.1	%
Acquired impaired loans
Commercial real estate	$	157,956			7.0	%	$	166,712			7.3	%
Residential real estate		139,858			6.1	%		144,562			6.4	%
Construction, land development, and other land		5,156			0.2	%		5,946			0.3	%
Commercial and industrial		8,055			0.4	%		10,008			0.4	%
Installment and other		449			0.0	%		462			0.0	%
Total acquired impaired loans	$	311,474			13.7	%	$	327,690			14.4	%
Acquired non-impaired loans
Commercial real estate	$	197,589			8.7	%	$	211,359			9.3	%
Residential real estate		30,785			1.3	%		32,085			1.4	%
Construction, land development, and other land		1,822			0.1	%		1,845			0.1	%
Commercial and industrial		89,985			3.9	%		94,731			4.1	%
Installment and other		36			0.0	%		42			0.0	%
Leasing financing receivables		29,993			1.3	%		36,357			1.6	%
Total acquired non-impaired loans	$	350,210			15.3	%	$	376,419			16.5	%
Total loans and leases	$	2,280,418			100.0	%	$	2,277,492			100.0	%
Allowance for loan and lease losses		(17,640	)					(16,706	)
Total loans, net allowance for loan losses	$	2,262,778					$	2,260,786

Loans collateralized by real estate comprised 66.9% and 69.1% of the loan and lease portfolio at March 31, 2018 and December 31, 2017, respectively. Commercial real estate loans comprised the largest portion of the real estate loan portfolio as of March 31, 2018 and totaled $840.9 million, or 55.1%, of real estate loans and 36.9% of the total loan and lease portfolio at March 31, 2018. At December 31, 2017, commercial real estate loans totaled $891.7 million and comprised 56.6% of real estate loans and 39.2% of the total loan and lease portfolio. Acquired impaired commercial real estate loans continue to decrease from $166.7 million as of December 31, 2017 to $158.0 million as of March 31, 2018, or 5.3%. At March 31, 2018 and December 31, 2017, commercial real estate loans as a percentage of total capital were 331.8% and 346.2%, respectively.

Residential real estate loans totaled $568.2 million at March 31, 2018 compared to $577.2 million at December 31, 2017, a decrease of $9.1 million or 1.6%. The residential real estate loan portfolio comprised 37.2% and 36.7% of real estate loans as of March 31, 2018 and December 31, 2017, respectively, and 24.9% and 25.3% of total loans and leases at

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March 31, 2018 and December 31, 2017, respectively. Acquired impaired residential real estate loans continue to decrease from $144.6 million as of December 31, 2017 to $139.9 million as of March 31, 2018, or 3.3%.

Construction, land development and other land loans totaled $117.1 million at March 31, 2018 compared to $105.4 million at December 31, 2017, an increase of $11.6 million or 11.0%. The construction, land development and other land loan portfolio comprised 7.7% and 6.7% of real estate loans as of March 31, 2018 and December 31, 2017, respectively, and 5.1% and 4.6% of the total loan and lease portfolio as of March 31, 2018 and December 31, 2017, respectively.

Commercial and industrial loans totaled $568.7 million and $521.2 million at March 31, 2018 and December 31, 2017, respectively, an increase of $47.5 million or 9.1% primarily due to organic growth. The commercial and industrial loan portfolio comprised 24.9% and 22.9% of the total loan and lease portfolio as of March 31, 2018 and December 31, 2017, respectively.

Lease financing receivables comprised 8.0% and 7.8% of the loan and lease portfolio as of March 31, 2018 and December 31, 2017, respectively. Total lease financing receivables were $181.5 million and $177.7 million at March 31, 2018 and December 31, 2017, respectively, an increase of $3.8 million, or 2.1%, due to continued growth in our small-ticket vendor sales channels, and our increased origination activities.

Loan Portfolio Maturities and Interest Rate Sensitivity

The following table shows our loan and lease portfolio by scheduled maturity at March 31, 2018 (dollars in thousands):

	Due in One Year or Less				Due after One Year Through Five Years				Due after Five Years
	Fixed Rate		Floating Rate		Fixed Rate		Floating Rate		Fixed Rate		Floating Rate		Total
Originated loans
Commercial real estate	$	25,156	$	52,632	$	122,285	$	152,547	$	21,557	$	111,147	$	485,324
Residential real estate		9,479		17,703		83,253		60,133		206,156		20,792		397,516
Construction, land    development, and other land		468		23,094		17,745		58,381		441		9,963		110,092
Commercial and industrial		7,207		45,318		18,681		249,716		5,712		144,055		470,689
Installment and other		84		2,531		577		—		453		—		3,645
Leasing financing receivables		3,410		—		140,099		—		7,959		—		151,468
Total originated loans	$	45,804	$	141,278	$	382,640	$	520,777	$	242,278	$	285,957	$	1,618,734
Acquired impaired loans
Commercial real estate	$	41,875	$	6,087	$	101,030	$	340	$	4,308	$	4,316	$	157,956
Residential real estate		31,636		656		84,263		2,180		20,423		700		139,858
Construction, land    development, and other land		1,612		157		3,264		—		123		-		5,156
Commercial and industrial		378		67		848		87		2,744		3,931		8,055
Installment and other		5		—		191		—		253		—		449
Total acquired impaired    loans	$	75,506	$	6,967	$	189,596	$	2,607	$	27,851	$	8,947	$	311,474
Acquired non-impaired loans
Commercial real estate	$	8,235	$	3,134	$	44,998	$	2,051	$	5,578	$	133,593	$	197,589
Residential real estate		11,826		5,254		3,052		8,394		1,842		417		30,785
Construction, land     development, and other land		581		—		1,024		—		—		217		1,822
Commercial and industrial		1,927		5,138		1,170		12,681		1,998		67,071		89,985
Installment and other		34		2		—		—		—		—		36
Leasing financing receivables		2,564		—		25,258		—		2,171		—		29,993
Total acquired non-    impaired loans	$	25,167	$	13,528	$	75,502	$	23,126	$	11,589	$	201,298	$	350,210
Total loans	$	146,477	$	161,773	$	647,738	$	546,510	$	281,718	$	496,202	$	2,280,418

 At March 31, 2018, 47.2% of the loan and lease portfolio bears interest at fixed rates and 52.8% at floating rates. The expected life of our loan portfolio will differ from contractual maturities because borrowers may have the right to curtail

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or prepay their loans with or without penalties. Because a portion of the portfolio is accounted for under ASC 310-30, the carrying value is significantly affected by estimates and it is impracticable to allocate scheduled payments for those loans based on those estimates. Consequently, the tables presented include information limited to contractual maturities of the underlying loans.

Allowance for Loan and Lease Losses

The ALLL is determined by us on a quarterly basis, although we are engaged in monitoring the appropriate level of the allowance on a more frequent basis. The ALLL reflects management’s estimate of probable incurred credit losses inherent in the loan and lease portfolios. The computation includes element of judgement and high levels of subjectivity.

Factors considered by us include, but are not limited to, actual loss experience, peer loss experience, changes in size and risk profile of the portfolio, identification of individual problem loan and lease situations which may affect a borrower’s ability to repay, and evaluation of the prevailing economic conditions. Changes in conditions may necessitate revision of the estimate in future periods.

We assess the ALLL based on three categories: (i) originated loans and leases, (ii) acquired non-impaired loans and leases, and (iii) acquired impaired loans with further credit deterioration after the acquisition or recapitalization.

Total ALLL was $17.6 million at March 31, 2018 compared to $16.7 million at December 31, 2017, an increase of $934,000, or 5.6%. The increase was primarily due to an increase in specific reserve on a commercial loan relationship, slight credit deterioration in the government guaranteed acquired non-credit impaired portfolio, and an increase to the general reserve driven by new loan originations.

Total ALLL was 0.77% and 0.73% of total loans and leases at March 31, 2018 and December 31, 2017, respectively. This ratio is generally below the median of our peer banks, as we valued significant amounts of acquired loans at fair value at acquisition date as a result of the Recapitalization and the Ridgestone acquisition, which, management believes, limits the amount of reserves needed to cover these loans as of March 31, 2018 and December 31, 2017, in accordance with applicable accounting guidance. Acquisition accounting adjustments remaining on loans from the Recapitalization and the Ridgestone acquisition totaled $28.1 million and $31.7 million as of March 31, 2018 and December 31, 2017, respectively.

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The following table presents an analysis of the allowance of the loan and lease losses for the periods presented (dollars in thousands):  

	Commercial Real Estate			Residential Real Estate			Construction, Land Development, and Other Land			Commercial and Industrial			Installment and Other			Lease Financing Receivables			Total
Balance at December 31, 2017	$	4,794		$	1,638		$	222		$	7,418		$	41		$	2,593		$	16,706
Provision for acquired impaired loans		226			(58	)		365			(145	)		63			—			451
Provision for acquired non-impaired loans and leases		487			-			1			648			—			(133	)		1,003
Provision for originated loans		220			(16	)		32			2,877			2			546			3,661
Total provision	$	933		$	(74	)	$	398		$	3,380		$	65		$	413		$	5,115
Charge-offs for acquired impaired loans		(234	)		—			(418	)		(99	)		(45	)		—			(796	)
Charge-offs for acquired non-impaired loans and leases		(78	)		—			—			(818	)		—			(11	)		(907	)
Charge-offs for originated loans and leases		(97	)		—			—			(2,124	)		—			(498	)		(2,719	)
Total charge-offs	$	(409	)	$	—		$	(418	)	$	(3,041	)	$	(45	)	$	(509	)	$	(4,422	)
Recoveries for acquired impaired loans		—			—			—			—			—			—			—
Recoveries for acquired non-impaired loans and leases		—			—			—			6			—			81			87
Recoveries for originated loans and leases		—			—			—			—			—			154			154
Total recoveries	$	—		$	—		$	—		$	6		$	—		$	235		$	241
Net charge-offs		409			—			418			3,035			45			274			4,181
Acquired impaired loans		1,920			375			24			1,174			36			—			3,529
Acquired non-impaired loans and leases		1,752			191			3			1,825			—			453			4,224
Originated loans and leases		1,646			998			175			4,764			25			2,279			9,887
Balance at March 31, 2018	$	5,318		$	1,564		$	202		$	7,763		$	61		$	2,732		$	17,640
Ending ALLL balance
Acquired impaired loans	$	1,920		$	375		$	24		$	1,174		$	36		$	—		$	3,529
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		1,572			153			—			2,963			14			—			4,702
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		1,827			1,036			177			3,626			11			2,732			9,409
Loans and leases ending balance
Acquired impaired loans	$	157,956		$	139,858		$	5,156		$	8,055		$	449		$	—		$	311,474
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		12,375			2,029			—			12,598			14			—			27,016
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		670,538			426,272			111,914			548,076			3,667			181,461			1,941,928
Total loans and leases at March 31, 2018, gross	$	840,869		$	568,159		$	117,070		$	568,729		$	4,130		$	181,461		$	2,280,418
Ratio of net charge-offs to average loans and leases outstanding during the period (annualized)
Acquired impaired loans		0.04	%		0.00	%		0.07	%		0.02	%		0.01	%		0.00	%		0.14	%
Acquired non-impaired loans and leases		0.01	%		0.00	%		0.00	%		0.14	%		0.00	%		-0.01	%		0.15	%
Originated loans and leases		0.02	%		0.00	%		0.00	%		0.38	%		0.00	%		0.06	%		0.46	%
Loans and leases ending balance as a percentage of total loans and leases, gross
Acquired impaired loans		6.93	%		6.13	%		0.23	%		0.35	%		0.02	%		0.00	%		13.66	%
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		0.54	%		0.09	%		0.00	%		0.55	%		0.00	%		0.00	%		1.18	%
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		29.40	%		18.69	%		4.91	%		24.03	%		0.16	%		7.96	%		85.16	%

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	Commercial Real Estate			Residential Real Estate			Construction, Land Development, and Other Land			Commercial and Industrial			Installment and Other			Lease Financing Receivables			Total
Balance at December 31, 2016	$	1,945		$	2,483		$	742		$	4,196		$	334		$	1,223		$	10,923
Provision for acquired impaired loans		174			275			—			46			—			—			495
Provision for acquired non-impaired loans and leases		(13	)		(2	)		23			728			(2	)		170			904
Provision for originated loans		179			(272	)		(348	)		81			(1	)		853			492
Total provision	$	340		$	1		$	(325	)	$	855		$	(3	)	$	1,023		$	1,891
Charge-offs for acquired impaired loans		(238	)		(57	)		—			(60	)		—			—			(355	)
Charge-offs for acquired non-impaired loans and leases		—			(10	)		—			(155	)		—			(284	)		(449	)
Charge-offs for originated loans and leases		—			—			—			—			—			(486	)		(486	)
Total charge-offs	$	(238	)	$	(67	)	$	—		$	(215	)	$	—		$	(770	)	$	(1,290	)
Recoveries for acquired impaired loans		—			—			—			—			—			—			—
Recoveries for acquired non-impaired loans and leases		—			—			—			—			—			167			167
Recoveries for originated loans and leases		—			—			—			—			—			126			126
Total recoveries	$	—		$	—		$	—		$	—		$	—		$	293		$	293
Net charge-offs		238			67			—			215			—			477			997
Acquired impaired loans		425			665			—			660			1			—			1,751
Acquired non-impaired loans and leases		102			332			33			647			326			331			1,771
Originated loans and leases		1,520			1,420			384			3,529			4			1,438			8,295
Balance at March 31, 2017	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817
Ending ALLL balance
Acquired impaired loans	$	425		$	665		$	-		$	660		$	1		$	—		$	1,751
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		—			282			26			966			325			—			1,599
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		1,622			1,470			391			3,210			5			1,769			8,467
Loans and leases ending balance
Acquired impaired loans	$	201,689		$	169,676		$	6,116		$	13,114		$	439		$	—		$	391,034
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		9,764			1,262			85			3,317			327			—			14,755
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		611,397			430,469			99,114			432,036			2,054			162,675			1,737,745
Total loans and leases at March 31, 2017, gross	$	822,850		$	601,407		$	105,315		$	448,467		$	2,820		$	162,675		$	2,143,534
Ratio of net charge-offs to average loans and leases outstanding during the period (annualized)
Acquired impaired loans		0.05	%		0.01	%		0.00	%		0.01	%		0.00	%		0.00	%		0.07	%
Acquired non-impaired loans and leases		0.00	%		0.00	%		0.00	%		0.03	%		0.00	%		0.02	%		0.05	%
Originated loans and leases		0.00	%		0.00	%		0.00	%		0.00	%		0.00	%		0.07	%		0.07	%
Loans and leases ending balance as a percentage of total loans and leases, gross
Acquired impaired loans		9.41	%		7.92	%		0.29	%		0.61	%		0.02	%		0.00	%		18.24	%
Acquired non-impaired loans and leases and originated loans individually evaluated for impairment		0.46	%		0.06	%		0.00	%		0.15	%		0.02	%		0.00	%		0.69	%
Acquired non-impaired loans and leases and originated loans and leases collectively evaluated for impairment		28.52	%		20.08	%		4.62	%		20.16	%		0.10	%		7.59	%		81.07	%

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Non-Performing Assets

Non-performing loans and leases include loans and leases 90 days past due and still accruing, loans and leases accounted for on a non-accrual basis and accruing restructured loans. Non-performing assets consist of non-performing loans and leases plus other real estate owned. Non-accrual loans and leases as of March 31, 2018 and December 31, 2017 totaled $23.6 million and $15.8 million, respectively. The increase of non-performing assets from December 31, 2017 to March 31, 2018 was primarily driven by one downgraded commercial loan relationship and one downgraded government guaranteed loan, partially offset by a decrease in other real estate owned of $160,000.

Total OREO held by us was $10.5 million as of March 31, 2018, a decrease of $160,000 million from December 31, 2017. The decrease in OREO resulted from dispositions of $1.3 million, offset by additions to OREO through loan foreclosures totaling $1.1 million.  

The following table sets forth the amounts of non-performing loans and leases, non-performing assets, and OREO at the dates indicated (dollars in thousands):

	March 31, 2018			December 31, 2017
Non-accrual loans and leases(1)(2)(3)	$	23,626		$	15,763
Past due loans and leases 90 days or more and still    accruing interest		—			—
Accruing troubled debt restructured loans		1,037			1,061
Total non-performing loans and leases		24,663			16,824
Other real estate owned		10,466			10,626
Total non-performing assets	$	35,129		$	27,450
Total non-performing loans as a percentage of total loans    and leases		1.08	%		0.74	%
Total non-performing assets as a percentage of    total assets		1.01	%		0.82	%
Allowance for loan and lease losses as a percentage of    non-performing loans and leases		71.52	%		99.30	%

(1) Includes $1.1 million and $1.6 million of non-accrual restructured loans at March 31, 2018 and December 31, 2017.

(2) For the three months ended March 31, 2018, $495,000 in interest income would have been recorded had non-accrual loans been current.

(3) For the three months ended March 31, 2018, $80,000 in interest income would have been recorded had troubled debt restructurings included within non-accrual loans been current.

Acquired impaired loans (accounted for under ASC 310-30) that are delinquent and/or on non-accrual status continue to accrue income provided the respective pool in which those assets reside maintains a discount and recognizes accretion income. The aforementioned loans are characterized as performing loans based on contractual delinquency. If the pool no longer has a discount and accretion income can no longer be recognized, any loan within that pool on non-accrual status will be classified as non-accrual for presentation purposes.

Total non-accrual loans increased by $7.9 million between December 31, 2017 and March 31, 2018 due to additional non-accrual loans primarily driven by one commercial loan relationship and one government guaranteed loan. The government guaranteed portion of non-accrual loans totaled $6.3 million at March 31, 2018 and $4.1 million at December 31, 2017.

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Total accruing loans past due increased from $15.2 million at December 31, 2017 to $22.8 million at March 31, 2018. This represents an increase of $7.6 million, or 50.1%, and can be attributed to additional loans becoming delinquent during the quarter. The increase was primarily in the 30-59 days past due category.

The following table summarizes the recorded investment, unpaid principal balance, related allowance, average recorded investment, and interest income recognized for loans and leases considered impaired as of the periods indicated (dollars in thousands):

	March 31, 2018
	Unpaid Principal Balance of Impaired Loans		Impaired ASC 310-30 Pools  with Specific Allowance Recorded		Impaired Non-ASC 310-30 Loans with a Specific Allowance		Impaired Non-ASC 310-30 Loans with no Specific Allowance Recorded		Specific Allowance Allocated to Impaired Loans		Average Recorded Investment in Impaired Loans		Interest Income Recognized on Impaired Loans
Commercial real estate	$	14,800	$	20,987	$	6,224	$	6,151	$	1,572	$	13,161	$	140
Residential real estate		1,998		3,034		347		1,682		153		2,281		11
Construction, land development,    and other land		—		82		—		—		—		—		—
Commercial and industrial		16,838		6,100		6,157		6,441		2,963		14,275		164
Installment and other		14		39		14		-		14		14		—
Total impaired loans held in    portfolio, net	$	33,650	$	30,242	$	12,742	$	14,274	$	4,702	$	29,731	$	315

	December 31, 2017
	Unpaid Principal Balance of Impaired Loans		Impaired ASC 310-30 Pools  with Specific Allowance Recorded		Impaired Non-ASC 310-30 Loans with a Specific Allowance		Impaired Non-ASC 310-30 Loans with no Specific Allowance Recorded		Specific Allowance Allocated to Impaired Loans		Average Recorded Investment in Impaired Loans		Interest Income Recognized on Impaired Loans
Commercial real estate	$	15,570	$	14,786	$	2,459	$	11,425	$	1,101	$	12,470	$	712
Residential real estate		2,397		2,386		354		2,075		158		2,203		78
Construction, land development,    and other land	—			404	—		—		—			309		2
Commercial and industrial		16,498		8,776		9,314		5,470		2,692		6,335		751
Installment and other		14		41		14	—			14		162		12
Total impaired loans held in    portfolio, net	$	34,479	$	26,393	$	12,141	$	18,970	$	3,965	$	21,479	$	1,555

Deposits

Total deposits at March 31, 2018 were $2.5 billion, representing an increase of $81.2 million, or 3.4%, compared to December 31, 2017. Non-interest bearing deposits were $749.9 million or 29.7% of total deposits, at March 31, 2018, a decrease of $11.0 million or 1.4% compared to $760.9 million at December 31, 2017 or 29.7% of total deposits. Interest bearing transaction accounts increased $44.7 million for the first quarter of 2018. Time deposits increased $47.5 million, or 6.7%, from $708.8 million at December 31, 2017 to $756.3 million at March 31, 2018. Core deposits remained stable at 85.3% of total deposits at March 31, 2018.

The increase in time deposits was primarily driven by the implementation of promotional campaigns during the first quarter of 2018. Our cost of average deposits was 41 basis points during the first quarter of 2018 compared to 35 basis points during the fourth quarter of 2017. These increases are primarily attributed to slightly higher rates on interest bearing deposits, growth in average time deposits, and a decrease in non-interest bearing demand deposits. We had no brokered time deposits as of March 31, 2018 or December 31, 2017.

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We gather deposits primarily through each of our 55 branch locations in the Chicago metropolitan area and one branch in Brookfield, Wisconsin. Through our branch network, online, mobile and direct banking channels, we offer a variety of deposit products including demand deposit accounts, interest-bearing products, savings accounts, and certificates of deposit. We offer competitive online, mobile and direct banking channels. Small businesses are a significant source of low cost deposits as they value convenience, flexibility and access to local decision makers that are responsive to their needs.

The following table shows the average balance amounts and the average rates paid on our deposits for the periods indicated (dollars in thousands):

	For the Three Months Ended March 31, 2018
	Average Balance		Average Rate
Non-interest-bearing deposits	$	743,827		0.00	%
Interest-bearing checking accounts		186,686		0.08	%
Money market demand accounts		345,545		0.43	%
Other savings		436,935		0.07	%
Time deposits (below $100,000)		371,955		1.02	%
Time deposits ($100,000 and above)		361,798		1.21	%
Total	$	2,446,746		0.41	%

The following table shows time deposits and other time deposits of $100,000 or more by time remaining until maturity:

	At March 31, 2018
	Time Deposits
Three months or less	$	90,494
Over three months through six months		88,298
Over six months through 12 months		156,593
Over 12 months		36,620
Total	$	372,005

Borrowed Funds

In addition to deposits, we also utilize FHLB advances as a supplementary funding source to finance our operations. The Bank’s advances from the FHLB are collateralized by residential, multi-family real estate loans and securities. At March 31, 2018 and December 31, 2017, our bank had maximum borrowing capacity from the FHLB of $797.5 million and $1.2 billion, respectively, subject to the availability of collateral. During the three months ended March 31, 2018, outstanding FHLB advances increased to $380.0 million, from $361.5 million at December 31, 2017.

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The following table sets forth certain information regarding our short-term borrowings at the dates and for the periods indicated (dollars in thousands):

	Three MonthsEnded March 31,
	2018			2017
Federal Home Loan Bank advances:
Average balance outstanding	$	249,630		$	301,375
Maximum outstanding at any month-end period during    the year		380,000			374,697
Balance outstanding at end of period		380,000			209,663
Weighted average interest rate during period		1.52	%		0.89	%
Weighted average interest rate at end of period		1.88	%		1.08	%
Line of credit:
Average balance outstanding	$	—		$	19,400
Maximum outstanding at any month-end period during    the year		—			20,650
Balance outstanding at end of period		—			18,150
Weighted average interest rate during period		0.00	%		3.79	%
Weighted average interest rate at end of period		0.00	%		4.00	%

The Bank’s FHLB advances at March 31, 2018 have maturities ranging from April 2018 to May 2018.

Customer Repurchase Agreements (Sweeps)

Securities sold under agreements to repurchase represent a demand deposit product offered to customers that sweep balances in excess of the FDIC insurance limit into overnight repurchase agreements. We pledge securities as collateral for the repurchase agreements. Securities sold under agreements to repurchase totaled $27.8 million at March 31, 2018, a decrease of $3.4 million compared to December 31, 2017.

Liquidity

We manage liquidity based upon factors that include the amount of core deposits as a percentage of total deposits, the level of diversification of our funding sources, the amount of non-deposit funding used to fund assets, the availability of unused funding sources, off-balance sheet obligations, the availability of assets to be readily converted into cash without undue loss, the amount of cash and liquid securities we hold and the re-pricing characteristics and maturities of our assets when compared to the re-pricing characteristics of our liabilities, the ability to securitize and sell certain pools of assets and other factors.

Our liquidity needs are primarily met by cash and investment securities positions, growth in deposits, cash flow from amortizing loan portfolios, and borrowings from the FHLB. For additional information regarding our operating, investing, and financing cash flows, see “Consolidated Statements of Cash Flows” in our Unaudited Interim Condensed Consolidated Financial Statements included elsewhere in this report.

As of March 31, 2018, we held $128.0 million in cash and cash equivalents. We maintain an investment securities portfolio of various holdings, types and maturities. We had securities available-for-sale of $626.1 million and securities held-to-maturity of $112.3 million as of March 31, 2018, including total unpledged securities of $387.8 million.

As of March 31, 2018, Byline Bank had maximum borrowing capacity from the FHLB of $797.5 million and from the Federal Reserve Bank of $156.1 million. As of March 31, 2018, Byline Bank had open advances of $380.0 million and open letters of credit of $300,000, leaving us with available aggregate borrowing capacity of $797.5 million. In addition, Byline Bank had uncommitted federal funds lines available of $55.0 million.

As of December 31, 2017, Byline Bank had maximum borrowing capacity from the FHLB of $1.2 billion and from the Federal Reserve Bank of $144.2 million. As of December 31, 2017, Byline Bank had open advances of $361.5 million and no

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open letters of credit, leaving us with available FHLB and FRB borrowing capacity of $637.2 million. In addition, Byline Bank had an uncommitted federal funds line available of $55.0 million.

On October 13, 2016, we entered into a $30.0 million revolving credit agreement with a correspondent bank. As of December 31, 2017, this revolving line of credit had no outstanding balance. 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. When the outstanding balance is reduced to $5.0 million, the line of credit will be converted to a revolving line of credit with credit availability up to $5.0 million until maturity. In July 2017, we repaid the outstanding balance, in full, under this line of credit of $16.2 million with proceeds from our initial public offering. On October 12, 2017, the line of credit was amended to extend the maturity date to October 11, 2018. As of March 31, 2018, the Company had no balance outstanding on the line of credit.

There are regulatory limitations that affect the ability of Byline Bank to pay dividends to the Company. See Note 21 of Byline’s Consolidated Financial Statements as of December 31, 2017 and 2016, included in our Form 10-K for additional information. Management believes that such limitations will not impact our ability to meet our ongoing short-term cash obligations.

Capital Resources

Stockholders’ equity at March 31, 2018 was $462.9 million compared to $458.6 million at December 31, 2017, an increase of $4.4 million, or 1.0%. The increase was primarily driven by the issuance of common stock upon the exercise of stock options of $86.8 million as well as retained earnings, offset by the other comprehensive loss.  

The Company and Byline Bank are subject to various regulatory capital requirements administered by federal banking regulators. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by federal banking regulators that, if undertaken, could have a direct material effect on our financial statements.

Under applicable bank regulatory capital requirements, each of the Company and Byline Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. Byline Bank must also meet certain specific capital guidelines under the prompt corrective action framework. The capital amounts and classification are subject to qualitative judgments by the federal banking regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and Byline Bank to maintain minimum amounts and ratios of CET1 Capital, Tier 1 capital and total capital to risk-weighted assets and of Tier 1 capital to average consolidated assets, (referred to as the “leverage ratio”), as defined under these capital requirements.

As of March 31, 2018, Byline Bank exceeded all applicable regulatory capital requirements and was considered “well-capitalized”. There have been no conditions or events since March 31, 2018 that management believes have changed Byline Bank’s classifications.

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The regulatory capital ratios for the Company and Byline Bank to meet the minimum capital adequacy standards and for Byline Bank to be considered well capitalized under the prompt corrective action framework and the Company’s and Byline Bank’s actual capital amounts and ratios are set forth in the following tables as of the periods indicated (dollars in thousands):

	Actual					Minimum Capital Required					Required for the Bank to be Considered Well Capitalized
March 31, 2018	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total capital to risk weighted assets:
Company	$	415,805		16.05	%	$	207,254		8.00	%	N/A		N/A
Bank		372,267		14.34	%		207,608		8.00	%	$	259,510		10.00	%
Tier 1 capital to risk weighted assets:
Company	$	396,406		15.30	%	$	155,440		6.00	%	N/A		N/A
Bank		352,868		13.60	%		155,706		6.00	%	$	207,608		8.00	%
Common Equity Tier 1 (CET1) to risk weighted    assets:
Company	$	349,468		13.49	%	$	116,580		4.50	%	N/A		N/A
Bank		352,868		13.60	%		116,780		4.50	%	$	168,682		6.50	%
Tier 1 capital to average assets:
Company	$	396,406		12.14	%	$	130,626		4.00	%	N/A		N/A
Bank		352,868		10.79	%		130,845		4.00	%	$	163,557		5.00	%

	Actual					Minimum Capital Required					Required for the Bank to be Considered Well Capitalized
December 31, 2017	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total capital to risk weighted assets:
Company	$	410,831		15.98	%	$	205,661		8.00	%	N/A		N/A
Bank		367,972		14.28	%		206,083		8.00	%	$	257,604		10.00	%
Tier 1 capital to risk weighted assets:
Company	$	392,520		15.27	%	$	154,246		6.00	%	N/A		N/A
Bank		349,662		13.57	%		154,562		6.00	%	$	206,083		8.00	%
Common Equity Tier 1 (CET1) to risk weighted    assets:
Company	$	353,995		13.77	%	$	115,684		4.50	%	N/A		N/A
Bank		349,662		13.57	%		115,922		4.50	%	$	167,442		6.50	%
Tier 1 capital to average assets:
Company	$	392,520		12.25	%	$	128,178		4.00	%	N/A		N/A
Bank		349,662		10.89	%		128,409		4.00	%	$	160,511		5.00	%

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The Company and Byline Bank must maintain a capital conservation buffer consisting of CET1 capital greater than 2.5% of risk-weighted assets above the required minimum risk-based capital levels in order to avoid limitations on paying dividends, repurchasing shares, and paying discretionary bonuses. The capital conservation buffer requirement began to be phased in on January 1, 2016 when a buffer greater than 0.625% of risk-weighted assets was required, which amount increases each year until the buffer requirement is fully implemented on January 1, 2019. As of January 1, 2018 the capital conservation buffer requirement was 1.875%.  The conservation buffers for the Company and Byline Bank exceed the fully phased in minimum capital requirement as of March 31, 2018.

Provisions of state and federal banking regulations may limit, by statute, the amount of dividends that may be paid to the Company by Byline Bank without prior approval of Byline Bank’s regulatory agencies. The Company is economically dependent on the cash dividends received from Byline Bank. These dividends represent the primary cash flow from operating activities used to service obligations. For the three months ended March 31, 2018, the Company received $600,000 in cash dividends from Byline Bank for the trust preferred securities interest and preferred dividends. For the year ended December 31, 2017, the Company received $2.8 million in cash dividends from Byline Bank to pay interest on the line of credit, interest payments on its trust preferred securities, and dividends on its preferred stock.

Contractual Obligations

FHLB advances are fully described in Note 12 of our Unaudited Interim Condensed Consolidated Financial Statements, included elsewhere in this report. Operating lease obligations are in place for facilities and land on which banking facilities are located. See Note 15 of our Interim Unaudited Condensed Consolidated Financial Statements for additional information.

Off-Balance Sheet Items and Other Financing Arrangements

We are a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of our customers. These financial instruments include commitments to extend credit, commercial letters of 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 we have in particular classes of financial instruments.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amount does not necessarily represent future cash requirements. We evaluate each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by Byline Bank upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral is primarily obtained in the form of commercial and residential real estate (including income producing commercial properties).

Standby letters of credit are conditional commitments issued by Byline Bank to guarantee to a third-party the performance of a customer. Those guarantees are primarily issued to support public and private borrowing arrangements, bond financing and similar transactions. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.

Commitments to make loans are generally made for periods of 90 days or less. The fixed rate loan commitments have interest rates ranging from 1.00% to 19.50% and maturities up to 2024. Variable rate loan commitments have interest rates ranging from 2.45% to 11.75% and maturities up to 2040.

Our exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual or notional amount of those instruments. We use the same credit policies in making commitments and conditional obligations as for funded instruments. We do not anticipate any material losses as a result of the commitments and standby letters of credit.

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During the three months ended March 31, 2018 and for the year ended December 31, 2017, we entered into interest rate swaps that are used to manage differences in the amount, timing, and duration of our known or expected cash receipts and its known or expected cash payments principally related to certain variable rate borrowings. We also entered into interest rate swaps with certain qualified borrowers to facilitate the borrowers’ risk management strategies and concurrently entered into mirror-image derivatives with a third party counterparty.

We recognize derivative financial instruments at fair value regardless of the purpose or intent for holding the instrument. We record derivative assets and derivative liabilities on the Consolidated Statements of Financial Condition within other assets and other liabilities, respectively. Because the derivative assets and liabilities recorded on the balance sheet at March 31, 2018 do not represent the amounts that may ultimately be paid under these contracts, these assets and liabilities are listed in the table below (dollars in thousands):

	March 31, 2018
			Fair Value
	Notional		Asset		Liability
Interest rate contracts—pay fixed, receive floating	$	250,000	$	9,047	$	—
Other interest rate swaps—pay fixed, receive floating		94,123		1,453		1,430
Other credit derivatives		1,250		—		2

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GAAP Reconciliation and Management Explanation of Non-GAAP Financial Measures

Some of the financial measures included in our “Selected Financial Data” are not measures of financial performance in accordance with GAAP. Our management uses the non‑GAAP financial measures set forth below in its analysis of our performance:

• “Adjusted net income” excludes certain significant items, which include dividends on preferred shares, the net deferred tax asset valuation reversal, incremental income tax benefit related to the increase in the Illinois corporate income tax rate, incremental income tax expense or benefit related to the decrease in the federal corporate income tax rate, impairment charges on assets held for sale, and merger related expense, adjusted for applicable income tax. Management believes the significant items listed are not indicative of or useful to measure our operating performance on an ongoing basis.

• “Pre‑tax pre‑provision income” is pre‑tax income plus the provision for loan and lease losses. Management believes this metric is important due to the tax benefit resulting from the reversal of the deferred tax asset valuation allowance, the decrease in the federal corporate income tax rate, the increase in the Illinois state corporate income tax rate, and the increase in the provision for loan and lease losses.

• “Pre‑tax pre‑provision return on average assets” is pre‑tax pre‑provision income, divided by average assets. Management believes this metric is important due to the tax benefit resulting from the reversal of the deferred tax asset valuation allowance, the decrease in the federal corporate income tax rate, and the increase in the Illinois state corporate income tax rate. The ratio demonstrates the profitability excluding the tax benefit and excludes the provision for loan and lease losses.

• “Tangible common equity” is defined as total stockholders’ equity reduced by preferred stock and goodwill and other intangible assets. Management does not consider servicing assets as an intangible asset for purposes of this calculation.

• “Tangible assets” is defined as total assets reduced by goodwill and other intangible assets. Management does not consider servicing assets as an intangible asset for purposes of this calculation.

• “Tangible book value per share” is tangible common equity divided by total shares of common stock outstanding. It is the ratio of tangible common stockholders’ equity to basic and diluted outstanding shares. This metric is important due to the relative changes in the book value per share exclusive of changes in intangible assets.

• “Tangible common equity to tangible assets” is calculated as tangible common equity divided by tangible assets. This measure is important to investors interested in relative changes in the ratio of total stockholders’ equity to total assets, each exclusive of changes in intangible assets.

• “Net interest margin excluding loan accretion” is calculated as reported net interest margin less the effect of accretion income net of contractual interest collected on acquired loans. This metric is important as it illustrates the impact of net accretion income from acquired loans on the net interest margin.

We believe that these non‑GAAP financial measures provide useful information to its management and investors that is supplementary to our financial condition, results of operations and cash flows computed in accordance with GAAP; however, we acknowledge that our non‑GAAP financial measures have a number of limitations. As such, you should not view these disclosures as a substitute for results determined in accordance with GAAP financial measures that we and other companies use. Management also uses these measures for peer comparison.

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Reconciliations of Non-GAAP Financial Measures

	As of or for the Three Months Ended March 31,
(dollars in thousands, except share and per share data)	2018			2017
Net interest margin:
Reported net interest margin		4.45	%		4.00	%
Effect of accretion income on acquired loans		(0.31	)%		(0.23	)%
Net interest margin excluding accretion		4.14	%		3.77	%
Total revenues:
Net interest income	$	33,695		$	29,538
Add: Non-interest income		11,428			12,308
Total revenues	$	45,123		$	41,846
Non-interest income to total revenues:
Non-interest income	$	11,428		$	12,308
Total revenues		45,123			41,846
Non-interest income to total revenues		25.33	%		29.41	%
Pre-tax pre-provision net income:
Pre-tax income	$	8,089		$	11,104
Add: Provision for loan and lease losses		5,115			1,891
Pre-tax pre-provision net income	$	13,204		$	12,995
Pre-tax pre-provision return on average assets:
Total average assets	$	3,362,071		$	3,315,095
Pre-tax pre-provision net income		13,204			12,995
Pre-tax pre-provision return on average assets		1.59	%		1.59	%
Tangible common equity:
Total stockholders' equity	$	462,936		$	389,683
Less: Preferred stock		10,438			25,441
Less: Goodwill		54,562			51,975
Less: Core deposit intangibles and other intangibles		15,991			19,058
Tangible common equity	$	381,945		$	293,209
Tangible assets:
Total assets	$	3,462,372		$	3,284,713
Less: Goodwill		54,562			51,975
Less: Core deposit intangibles and other intangibles		15,991			19,058
Tangible assets	$	3,391,819		$	3,213,680
Tangible book value per share:
Tangible common equity	$	381,945		$	293,209
Shares of common stock outstanding		29,404,048			24,616,706
Tangible book value per share	$	12.99		$	11.91
Tangible common equity to tangible assets:
Tangible common equity	$	381,945		$	293,209
Tangible assets		3,391,819			3,213,680
Tangible common equity to tangible assets		11.26	%		9.12	%

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	As of or for the Three Months Ended March 31,
(dollars in thousands, except share and per share data)	2018			2017
Net income and earnings per share excluding    significant items
Reported Net Income	$	6,768		$	6,560
Significant items:
Net deferred tax asset valuation allowance reversal		—			—
Incremental income tax benefit of state tax rate change		—			—
Incremental income tax benefit attributed to federal    income tax reform		(724	)		—
Impairment charges on assets held for sale		—			—
Merger related expense		123			—
Tax benefit on impairment charges and merger    related expenses		(34	)		—
Adjusted Net Income	$	6,133		$	6,560
Reported Diluted Earnings per Share	$	0.22		$	0.25
Significant items:
Net deferred tax asset valuation allowance reversal		—			—
Incremental income tax benefit of state tax rate change		—			—
Incremental income tax benefit attributed to federal    income tax reform		(0.02	)		—
Impairment charges on assets held for sale		—			—
Merger related expense		0.01			—
Tax benefit on impairment charges and merger    related expenses		—			—
Adjusted Diluted Earnings per Share	$	0.21		$	0.25

Forward-Looking Statements

Statements contained in this Annual Report on Form 10-K and in other documents we file with or furnish to the Securities and Exchange Commission (“SEC”) that are not historical facts may constitute forward-looking statements within the meaning of the federal securities laws. Forward-looking statements include, without limitation, statements concerning plans, estimates, calculations, forecasts and projections with respect to the anticipated future performance of the Company and our business. These statements are often, but not always, made through the use of words or phrases such as ‘‘may’’, ‘‘might’’, ‘‘should’’, ‘‘could’’, ‘‘predict’’, ‘‘potential’’, ‘‘believe’’, ‘‘expect’’, ‘‘continue’’, ‘‘will’’, ‘‘anticipate’’, ‘‘seek’’, ‘‘estimate’’, ‘‘intend’’, ‘‘plan’’, ‘‘projection’’, ‘‘would’’, ‘‘annualized’’, “target” and ‘‘outlook’’, or the negative version of those words or other comparable words or phrases of a future or forward-looking nature. Forward-looking statements represent management’s current beliefs and expectations regarding future events, such as our anticipated future financial results, credit quality, liquidity, revenues, expenses, or other financial items, and the impact of business plans and strategies or legislative or regulatory actions.

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Our ability to predict results or the actual effects of future plans, strategies or events is inherently uncertain. Factors which could cause actual results or conditions to differ materially from those reflected in forward-looking statements include:

• uncertainty regarding geopolitical developments and the United States and global economic outlook that may continue to impact market conditions or affect demand for certain banking products and services;

• unforeseen credit quality problems or changing economic conditions that could result in charge-offs greater than we have anticipated in our allowance for loan and lease losses or changes in the value of our investments;

• commercial real estate market conditions in the Chicago metropolitan area and southern Wisconsin;

• deterioration in the financial condition of our borrowers resulting in significant increases in our loan and lease losses and provisions for those losses and other related adverse impacts to our results of operations and financial condition;

• estimates of fair value of certain of our assets and liabilities, which could change in value significantly from period to period;

• competitive pressures in the financial services industry relating to both pricing and loan structures, which may impact our growth rate;

• unanticipated developments in pending or prospective loan and/or lease transactions or greater-than-expected pay downs or payoffs of existing loans and leases;

• inaccurate assumptions in our analytical and forecasting models used to manage our loan and lease portfolio;

• unanticipated changes in monetary policies of the Federal Reserve or significant adjustments in the pace of, or market expectations for, future interest rate changes;

• availability of sufficient and cost-effective sources of liquidity or funding as and when needed;

• our ability to retain or the loss of key personnel or an inability to recruit appropriate talent cost-effectively;

• adverse effects on our information technology systems resulting from failures, human error or cyberattack, including the potential impact of disruptions or security breaches at our third-party service providers, any of which could result in an information or security breach, the disclosure or misuse of confidential or proprietary information, significant legal and financial losses and reputational harm;

• greater-than-anticipated costs to support the growth of our business, including investments in technology, process improvements or other infrastructure enhancements, or greater-than-anticipated compliance or regulatory costs and burdens;

• the impact of possible future acquisitions, if any, including the costs and burdens of integration efforts;

• the ability of the Company to receive dividends from its subsidiaries;

• changes in Small Business Administration (“SBA”) and United States Department of Agriculture (“USDA”) government guaranteed lending rules, regulations and loan products, including specifically the SBA Section 7(a) program, changes in SBA or USDA standard operating procedures or changes to the status of Byline Bank as an SBA Preferred Lender;

• changes in accounting principles, policies and guidelines applicable to bank holding companies and banking generally; or

• the impact of a possible change in the federal or state income tax rate on our deferred tax assets and provision for income tax expense.

These factors should be considered in evaluating forward-looking statements, and you should not place undue reliance on any forward-looking statements, which speak only as of the date they are made. You should also consider the risks, assumptions and uncertainties set forth in the “Risk Factors” section of this Form 10-Q and in our Form 10-K, and the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section of this Form 10-Q, as well as those set forth in our subsequent periodic and current reports filed with the SEC. We assume no obligation to update any of these statements in light of new information, future events or otherwise unless required under the federal securities laws.

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Item 3. Quantitative and Qualitative Disclosures about Market Risk.

Our primary market risk is interest rate risk, which is defined as the risk of loss of net interest income or net interest margin because of changes in interest rates.

We seek to measure and manage the potential impact of interest rate risk. Interest rate risk occurs when interest-earning assets and interest-bearing liabilities mature or re-price at different times, on a different basis or in unequal amounts. Interest rate risk also arises when our assets, liabilities and off-balance sheet contracts each respond differently to changes in interest rates, including as a result of explicit and implicit provisions in agreements related to such assets and liabilities and in off-balance sheet contracts that alter the applicable interest rate and cash flow characteristics as interest rates change. The two primary examples of such provisions that we are exposed to are the duration and rate sensitivity associated with indeterminate-maturity deposits (e.g., non-interest-bearing checking accounts, negotiable order of withdrawal (“NOW”) accounts, savings accounts and money market deposits accounts (“MMDAs”) and the rate of prepayment associated with fixed-rate lending and mortgage-backed securities. Interest rates may also affect loan demand, credit losses, mortgage origination volume and other items affecting earnings.

We are also exposed to interest rate risk through the retained portion of the government guaranteed loans we make and the related servicing rights. Our government guaranteed loan portfolio is comprised primarily of SBA 7(a) loans, virtually all of which are quarterly or monthly adjustable with the prime rate. The SBA portfolio reacts differently in a rising rate environment than our other non-guaranteed portfolios. Generally, when interest rates rise, the prepayments in the SBA portfolio tend to increase.

Our management of interest rate risk is overseen by our bank’s asset liability committee, and is chaired by Byline Bank’s Treasurer, based on a risk management infrastructure approved by our board of directors that outlines reporting and measurement requirements. In particular, this infrastructure sets limits and management targets, calculated monthly, for various metrics, including our economic value sensitivity, our economic value of equity and net interest income simulations involving parallel shifts in interest rate curves, steepening and flattening yield curves, and various prepayment and deposit duration assumptions. Our risk management infrastructure also requires a periodic review of all key assumptions used, such as identifying appropriate interest rate scenarios, setting loan prepayment rates based on historical analysis, non-interest-bearing and interest-bearing demand deposit durations based on historical analysis and the targeted investment term of capital.

We manage the interest rate risk associated with our interest-bearing liabilities by managing the interest rates and tenors associated with our borrowings from the FHLB and deposits from our customers that we rely on for funding. In particular, from time to time we use special offers on deposits to alter the interest rates and tenors associated with our interest-bearing liabilities. We manage the interest rate risk associated with our interest-earning assets by managing the interest rates and tenors associated with our investment and loan portfolios, from time to time purchasing and selling investment securities and selling residential mortgage loans in the secondary market.

We utilize interest rate swaps to hedge our interest rate exposure on commercial loans when it meets our client and Byline Bank needs. Typically, customer interest rate swaps are for terms of more than 5 years. As of March 31, 2018, we had a notional amount of $345.4 million of interest rate swaps outstanding which includes customer swaps and those on Byline Bank’s balance sheet. The overall effectiveness of our hedging strategies is subject to market conditions, the quality of our execution, the accuracy of our valuation assumptions, the associated counterparty credit risk and changes in interest rates.

We do not engage in speculative trading activities relating to interest rates, foreign exchange rates, commodity prices, equities or credit.

We are also subject to credit risk. Credit risk is the risk that borrowers or counterparties will be unable or unwilling to repay their obligations in accordance with the underlying contractual terms. We manage and control credit risk in the loan and lease portfolio by adhering to well-defined underwriting criteria and account administration standards established by management. Written credit policies document underwriting standards, approval levels, exposure limits and other limits or standards deemed necessary and prudent. Portfolio diversification at the obligor, industry, product and/or geographic location levels is actively managed to mitigate concentration risk. In addition, credit risk management also includes an independent credit review process that assesses compliance with commercial, real estate and other credit policies, risk ratings and other critical credit information. In addition to implementing risk management practices that are based upon established and sound lending practices, we adhere to sound credit principles. We understand and evaluate our customers’ borrowing needs and capacity to repay, in conjunction with their character and history.

80

Evaluation of Interest Rate Risk

We use a net interest income simulation model to measure and evaluate potential changes in our net interest income. We run various hypothetical interest rate scenarios at least monthly and compare these results against a scenario with no changes in interest rates. Our net interest income simulation model incorporates various assumptions, which we believe are reasonable but which may have a significant impact on results such as: (1) the timing of changes in interest rates, (2) shifts or rotations in the yield curve, (3) re-pricing characteristics for market-rate-sensitive instruments on and off balance sheet, (4) differing sensitivities of financial instruments due to differing underlying rate indices, (5) the effect of interest rate limitations in our assets, such as floors and caps, (6) the effect of our interest rate swaps and (7) overall growth and repayment rates and product mix of assets and liabilities. Because of limitations inherent in any approach used to measure interest rate risk, simulation results are not intended as a forecast of the actual effect of a change in market interest rates on our results but rather as a means to better plan and execute appropriate asset-liability management strategies and manage our interest rate risk.

Potential changes to our net interest income in hypothetical rising and declining rate scenarios calculated as of March 31, 2018 is presented in the following table. The projections assume (1) immediate, parallel shifts downward of the yield curve of 100 basis points and immediate, parallel shifts upward of the yield curve of 100, 200, 300 and 400 basis points and (2) gradual shifts downward of 100 basis points over 12 months and gradual shifts upward of 100 and 200 basis points over 12 months. In the current interest rate environment, a downward shift of the yield curve of 200, 300 and 400 basis points does not provide us with meaningful results. In a downward parallel shift of the yield curve, interest rates at the short-end of the yield curve are not modeled to decline any further than 0%. For the dynamic balance sheet and rate shift scenarios, we assume interest rates follow a forward yield curve and then ramp it up by 1/12th of the total change in rates each month for twelve months.

	Estimated Increase (Decrease) in Net Interest Income
	Twelve Months Ending			Twelve Months Ending
Change in Market Interest Rates as of March 31, 2018	March 31, 2019			March 31, 2020
Immediate Shifts
+400 basis points		11.7	%		12.6	%
+300 basis points		9.7	%		10.4	%
+200 basis points		7.1	%		7.6	%
+100 basis points		3.7	%		4.0	%
-100 basis points		(5.8	)%		(6.8	)%
Dynamic Balance Sheet and Rate Shifts
+200 basis points		4.7	%
+100 basis points		1.9	%
-100 basis points		(4.5	)%

The results of this simulation analysis are hypothetical, and a variety of factors might cause actual results to differ substantially from what is depicted. For example, if the timing and magnitude of interest rate changes differ from those projected, our net interest income might vary significantly. Non-parallel yield curve shifts such as a flattening or steepening of the yield curve or changes in interest rate spreads, would also cause our net interest income to be different from that depicted. An increasing interest rate environment could reduce projected net interest income if deposits and other short-term liabilities re-price faster than expected or faster than our assets re-price. Actual results could differ from those projected if we grow assets and liabilities faster or slower than estimated, if we experience a net outflow of deposit liabilities or if our mix of assets and liabilities otherwise changes. Actual results could also differ from those projected if we experience substantially different repayment speeds in our loan portfolio than those assumed in the simulation model. Finally, these simulation results do not contemplate all the actions that we may undertake in response to potential or actual changes in interest rates, such as changes to our loan, investment, deposit, funding or hedging strategies.

81

Item 4. Controls and Procedures.

The Company’s management, including our President and Chief Executive Officer and our Chief Financial Officer, have evaluated the effectiveness of our “disclosure controls and procedures” (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)), as of the end of the period covered by this report. Based on such evaluation, our President and Chief Executive Officer and our Chief Financial Officer have concluded that, as of March 31, 2018, the Company’s disclosure controls and procedures were effective to provide reasonable assurance that the information required to be disclosed by the Company in the reports it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and is accumulated and communicated to the Company’s management, including our President and Chief Executive Officer and our Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There was no change in our internal control over financial reporting during the quarter ended March 31, 2018, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

The design of any system of controls and procedures is based in part upon certain assumptions about the likelihood of future events. There can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote.

PART II-OTHER INFORMATION

Item 1. Legal Proceedings.

We operate in a highly regulated environment.  From time to time we are a party to various litigation matters incidental to the conduct of our business. We are not presently party to any legal proceedings the resolution of which we believe would have a material adverse effect on our business, prospects, financial condition, liquidity, results of operation, cash flows or capital levels.

Item 1A. Risk Factors.

There have been no material changes from the risk factors previously disclosed in the “Risk Factors” section included in our Form 10-K for our fiscal year ended December 31, 2017 that was filed with the SEC on March 30, 2018.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Unregistered Sales of Equity Securities

None.

Use of Proceeds from Registered Securities

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

82

Item 6. Exhibits.

	EXHIBIT
Number	Description
3.1	Amended and Restated Certificate of Incorporation (filed as Exhibit 3.1 to the Company’s Registration Statement on Form S-1, as amended (File No. 333-218362) filed on June 19, 2017 and incorporated herein by reference)
3.2	Amended and Restated Bylaws (filed as Exhibit 3.2 to the Company’s Registration Statement on Form S-1, as amended (File No. 333-218362) filed on June 19, 2017 and incorporated herein by reference)
3.3	Certificate of Designations of Noncumulative Perpetual Preferred Stock, Series A (filed as Exhibit 3.3 to the Company’s Registration Statement on Form S-1, as amended (File No. 333-218362) filed on June 19, 2017 and incorporated herein by reference)
3.4	Form of Repurchase Agreement for Noncumulative Perpetual Preferred Stock, Series A (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-38139) filed on July 17, 2017 and incorporated herein by reference)
3.5	Certificate of Designations of 7.50% Fixed-to-Floating Noncumulative Perpetual Preferred Stock, Series B (filed as Exhibit 3.4 to the Company’s Registration Statement on Form S-1, as amended (File No. 333-218362) filed on June 19, 2017 and incorporated herein by reference)
4.1	Certain instruments defining the rights of holders of long-term debt securities of the registrant and its subsidiaries are omitted pursuant to Item 601(b)(4)(iii) of Regulation S-K. The registrant hereby undertakes to furnish to the SEC, upon request, copies of any such instruments.
31.1	Certification of the Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, and Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of the Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, and Section 302 of the Sarbanes-Oxley Act of 2002
32.1(a)	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	Financial information from the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, formatted in XBRL interactive data files pursuant to Rule 405 of Regulation S-T: (i) Consolidated Statements of Condition; (ii) Consolidated Statements of Operations; (iii) Consolidated Statements of Comprehensive Income (Loss); (iv) Consolidated Statements of Changes in Stockholders’ Equity; (v) Consolidated Statements of Cash Flows; and (vi) Notes to Consolidated Financial Statements

(a) This exhibit shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act.

83

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Byline Bancorp, Inc.
Date:  May 10, 2018	By:	/s/	Alberto J. Paracchini
			Alberto J. Paracchini
			President and Chief Executive Officer
			(Principal Executive Officer)
Date:  May 10, 2018	By:	/s/	Lindsay Corby
			Lindsay Corby
			Executive Vice President and Chief Financial Officer
			(Principal Financial and Accounting Officer)

84

EX-31.1

EXHIBIT 31.1

Certification of Chief Executive Officer
Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934
and Section 302 of the Sarbanes-Oxley Act of 2002

I, Alberto J. Paracchini, certify that:

1.I have reviewed this quarterly report on Form 10-Q (the “Report”) of Byline Bancorp, Inc. (the “Registrant”):

2.Based on my knowledge, this Report does not contain any untrue statement of a material  act or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this Report;

4.The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:

a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b) [Paragraph omitted in accordance with Exchange Act Rule 13a-14(a)];

c)  Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

d)  Disclosed in this Report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

a)  All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

b)  Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date:   May 10, 2018	/s/ Alberto J. Paracchini
	Alberto J. Paracchini
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

Certification of Chief Financial Officer
Pursuant to Rules 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934
and Section 302 of the Sarbanes-Oxley Act of 2002

I, Lindsay Corby, certify that:

1.I have reviewed this quarterly report on Form 10-Q (the “Report”) of Byline Bancorp, Inc. (the “Registrant”):

2.Based on my knowledge, this Report does not contain any untrue statement of a material  act or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this Report;

4.The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:

a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b) [Paragraph omitted in accordance with Exchange Act Rule 13a-14(a)];

c)  Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report, based on such evaluation; and

d)  Disclosed in this Report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

a)  All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

b)  Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date:   May 10, 2018	/s/ Lindsay Corby
	Lindsay Corby
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1(a)

CERTIFICATIONS PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Byline Bancorp, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, the Chief Executive Officer and Chief Financial Officer of the Company, each hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his or her knowledge:

1.The Report fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/	Alberto J. Paracchini
	Alberto J. Paracchini
	President and Chief Executive Officer
	(Principal Executive Officer)
	May 10, 2018
/s/	Lindsay Corby
	Lindsay Corby
	Executive Vice President & Chief Financial Officer
	(Principal Financial Officer)
	May 10, 2018

XML

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 10, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	BY
Entity Registrant Name	Byline Bancorp, Inc.
Entity Central Index Key	0001702750
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		29,460,991

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 17,396	$ 19,404
Interest bearing deposits with other banks	110,645	38,945
Cash and cash equivalents	128,041	58,349
Securities available-for-sale, at fair value	626,057	583,236
Securities held-to-maturity, at amortized cost (fair value March 31, 2018—$110,419, December 31, 2017—$117,277)	112,266	117,163
Restricted stock, at cost	17,177	16,343
Loans held for sale	8,219	5,212
Loans and leases:
Loans and leases	2,280,418	2,277,492
Allowance for loan and lease losses	(17,640)	(16,706)
Net loans and leases	2,262,778	2,260,786
Servicing assets, at fair value	21,615	21,400
Accrued interest receivable	6,971	7,670
Premises and equipment, net	94,014	95,224
Assets held for sale	9,030	9,779
Other real estate owned, net	10,466	10,626
Goodwill	54,562	54,562
Other intangible assets, net	15,991	16,756
Bank-owned life insurance	5,838	5,718
Deferred tax assets, net	47,371	47,376
Due from counterparty	19,987	39,824
Other assets	21,989	16,106
Total assets	3,462,372	3,366,130
LIABILITIES
Non-interest bearing demand deposits	749,892	760,887
Interest bearing deposits:
NOW, savings accounts, and money market accounts	1,018,361	973,685
Time deposits	756,294	708,757
Total deposits	2,524,547	2,443,329
Accrued interest payable	1,612	1,306
Federal Home Loan Bank advances	380,000	361,506
Securities sold under agreements to repurchase	27,815	31,187
Junior subordinated debentures issued to capital trusts, net	27,800	27,647
Accrued expenses and other liabilities	37,662	42,577
Total liabilities	2,999,436	2,907,552
STOCKHOLDERS’ EQUITY
Preferred stock	10,438	10,438
Common stock, voting $0.01 par value at March 31, 2018 and December 31, 2017; 150,000,000 shares authorized at March 31, 2018 and December 31, 2017; 29,404,048 shares issued and outstanding at March 31, 2018 and 29,317,298 issued and outstanding at December 31, 2017	293	292
Additional paid-in capital	392,932	391,586
Retained earnings	68,687	61,349
Accumulated other comprehensive loss, net of tax	(9,414)	(5,087)
Total stockholders’ equity	462,936	458,578
Total liabilities and stockholders’ equity	$ 3,462,372	$ 3,366,130

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Securities held-to-maturity, fair value	$ 110,419	$ 117,277
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	29,404,048	29,317,298
Common stock, voting shares outstanding	29,404,048	29,317,298

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST AND DIVIDEND INCOME
Interest and fees on loans and leases	$ 33,654,000	$ 28,396,000
Interest on taxable securities	4,055,000	3,790,000
Interest on tax-exempt securities	174,000	133,000
Other interest and dividend income	259,000	169,000
Total interest and dividend income	38,142,000	32,488,000
INTEREST EXPENSE
Deposits	2,498,000	1,483,000
Federal Home Loan Bank advances	1,358,000	660,000
Subordinated debentures and other borrowings	591,000	807,000
Total interest expense	4,447,000	2,950,000
Net interest income	33,695,000	29,538,000
PROVISION FOR LOAN AND LEASE LOSSES	5,115,000	1,891,000
Net interest income after provision for loan and lease losses	28,580,000	27,647,000
NON-INTEREST INCOME
Fees and service charges on deposits	1,312,000	1,219,000
Net servicing fees	563,000	919,000
ATM and interchange fees	1,218,000	1,348,000
Net gains on sales of securities available-for-sale		8,000
Net gains on sales of loans	7,476,000	8,082,000
Other non-interest income	859,000	732,000
Total non-interest income	11,428,000	12,308,000
NON-INTEREST EXPENSE
Salaries and employee benefits	18,278,000	16,602,000
Occupancy expense, net	3,755,000	3,739,000
Equipment expense	603,000	563,000
Loan and lease related expenses	1,400,000	877,000
Legal, audit and other professional fees	1,851,000	1,671,000
Data processing	2,301,000	2,409,000
Net gain recognized on other real estate owned and other related expenses	(1,000)	(570,000)
Regulatory assessments	241,000	184,000
Other intangible assets amortization expense	767,000	769,000
Advertising and promotions	249,000	289,000
Telecommunications	418,000	418,000
Other non-interest expense	2,057,000	1,900,000
Total non-interest expense	31,919,000	28,851,000
INCOME BEFORE PROVISION FOR INCOME TAXES	8,089,000	11,104,000
PROVISION FOR INCOME TAXES	1,321,000	4,544,000
NET INCOME	6,768,000	6,560,000
Dividends on preferred shares	193,000	189,000
INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 6,575,000	$ 6,371,000
EARNINGS PER COMMON SHARE
Basic	$ 0.22	$ 0.26
Diluted	$ 0.22	$ 0.25

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Other Comprehensive Income [Abstract]
Net income	$ 6,768	$ 6,560
Securities available-for-sale
Unrealized holding (losses) gains arising during the period	(8,852)	1,020
Reclassification adjustments for net gains included in net income		(8)
Tax effect	2,395	(626)
Net of tax	(6,457)	386
Cash flow hedges
Unrealized holding gains arising during the period	4,070	(83)
Reclassification adjustments for (losses) gains included in net income	(61)	54
Tax effect	(1,116)	11
Net of tax	2,893	(18)
Total other comprehensive income (loss)	(3,564)	368
Comprehensive income	$ 3,204	$ 6,928

XML

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
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	6,560				6,560
Other comprehensive income (loss), net of tax	368					368
Cash dividends declared on preferred stock	(189)				(189)
Share-based compensation expense	286			286
Ending balance at Mar. 31, 2017	389,683	$ 25,441		313,838	57,304	(6,900)
Ending balance, shares at Mar. 31, 2017		25,441	24,616,706
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
Ending balance at Dec. 31, 2017	458,578	$ 10,438	$ 292	391,586	61,349	(5,087)
Ending balance, shares at Dec. 31, 2017		10,438	29,317,298
Net income	6,768				6,768
Other comprehensive income (loss), net of tax	(3,564)					(3,564)
Issuance of common stock upon exercise of stock options	1,005		$ 1	1,004
Issuance of common stock upon exercise of stock options, shares			86,750
Reclassification of certain income tax effects from accumulated other comprehensive income	(763)				763	(763)
Cash dividends declared on preferred stock	(193)				(193)
Share-based compensation expense	342			342
Ending balance at Mar. 31, 2018	$ 462,936	$ 10,438	$ 293	$ 392,932	$ 68,687	$ (9,414)
Ending balance, shares at Mar. 31, 2018		10,438	29,404,048

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 6,768	$ 6,560
Adjustments to reconcile net income to net cash from operating activities:
PROVISION FOR LOAN AND LEASE LOSSES	5,115	1,891
Depreciation and amortization of premises and equipment	1,273	1,298
Net amortization of securities	1,009	1,184
Net gains on sales of securities available-for-sale		(8)
Net gains on sales of assets held for sale	(189)	(162)
Net gains on sales of loans	(7,476)	(8,082)
Originations of government guaranteed loans	(82,125)	(61,918)
Proceeds from government guaranteed loans sold	104,604	70,410
Accretion of premiums and discounts on acquired loans, net	(7,258)	(7,955)
Net change in servicing assets	(215)	(132)
Net valuation adjustments on other real estate owned	81	276
Net gains on sales of other real estate owned	(64)	(1,228)
Other intangible assets amortization expense	767	769
Amortization of time deposit premium	(5)	(463)
Amortization of Federal Home Loan Bank advances premium	(19)	(52)
Accretion of junior subordinated debentures discount	153	204
Share-based compensation expense	342	286
Deferred tax provision	1,284	4,220
Increase in cash surrender value of bank owned life insurance	(120)	(119)
Changes in assets and liabilities:
Accrued interest receivable	673	(666)
Other assets	622	739
Accrued interest payable	306	(534)
Accrued expenses and other liabilities	4,944	(1,418)
Net cash provided by operating activities	30,470	5,100
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of securities available-for-sale	(72,646)	(745)
Proceeds from maturities and calls of securities available-for-sale	5,430	1,182
Proceeds from paydowns of securities available-for-sale	14,691	17,718
Proceeds from sales of securities available-for-sale		8
Proceeds from paydowns of securities held-to-maturity	4,050	5,337
Purchases of Federal Home Loan Bank stock	(6,282)	(2,610)
Federal Home Loan Bank stock repurchases	5,448	8,100
Proceeds from other loans sold		9,984
Net change in loans and leases	(10,723)	(9,412)
Purchases of premises and equipment	(63)	(797)
Proceeds from sales of assets held for sale	954	2,752
Proceeds from sales of other real estate owned	1,187	5,157
Net cash (used in) provided by investing activities	(57,954)	36,674
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	81,223	85,908
Proceeds from Federal Home Loan Bank advances	1,589,900	825,000
Repayments of Federal Home Loan Bank advances	(1,571,387)	(929,000)
Repayments of line of credit		(2,500)
Net (decrease) increase in securities sold under agreements to repurchase	(3,372)	14,691
Dividends paid on preferred stock	(193)	(189)
Proceeds from issuance of common stock upon exercise of stock options	1,005
Proceeds from issuance of preferred stock		1,050
Net cash provided by (used in) financing activities	97,176	(5,040)
NET INCREASE IN CASH AND CASH EQUIVALENTS	69,692	36,734
CASH AND CASH EQUIVALENTS, beginning of period	58,349	46,533
CASH AND CASH EQUIVALENTS, end of period	128,041	83,267
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	4,012	3,795
Cash payments during the period for taxes	63	832
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Change in fair value of available-for-sale securities, net of tax	(6,457)	386
Change in fair value of cash flow hedges, net of tax	2,893	(18)
Delayed payments of mortgage-backed securities	726	372
Change in due to broker	9,838	(9,978)
Transfers of loans to loans held for sale		10,061
Transfers of loans to other real estate owned	1,044	808
Transfers of land and premises to assets held for sale		1,508
Transfers of premises and equipment to other assets		$ 502
Transfers of other assets to assets held for sale	$ 16

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Basis of Presentation

3 Months Ended

Mar. 31, 2018

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 BylineBancorp, Inc., a Delaware corporation(the“Company,”“we,” “us,”“our”),a bank holding companywhose principalactivityistheownershipand managementof its Illinois state chartered subsidiarybank, BylineBank (the “Bank”), based in Chicago, Illinois.

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 March 31, 2018 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, 2017, 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.

During the three months ended March 31, 2018, we revised our previously issued 2017 consolidated financial statements to properly record a deferred tax liability associated with the bad debt recapture assumed from the acquisition of Ridgestone Financial Services, Inc. (“Ridgestone”) and its subsidiaries on October 14, 2016. The acquisition of Ridgestone was accounted for using the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. 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. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017.

We evaluated the effect of the error to our previously issued consolidated financial statements in accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 99 and No. 108,  and, based upon quantitative and qualitative factors, determined that the error was not material to our previously issued consolidated financial statements. Accordingly, we have reflected the change in 2017 and revised our Consolidated Statements of Financial Condition disclosed herein. Consolidated financial statements for periods not presented herein will be revised, as applicable, as they are included in future filings.

All financial information presented in the accompanying notes to these consolidated financial statements was revised to reflect the change. The change did not affect net income or stockholders’ equity for the periods impacted.

The following table presents the effect of the aforementioned revisions to our Consolidated Statements of Financial Condition as of December 31, 2017:

	December 31, 2017
	(dollars in thousands)
	As Reported		Adjustment			As Revised
Goodwill	$	51,975	$	2,587		$	54,562
Deferred tax assets, net		49,963		(2,587	)		47,376
Total assets		3,366,130		—			3,366,130

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Recently Issued Accounting Pronouncements

3 Months Ended

Mar. 31, 2018

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 Topics 606 and 610 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, amending ASC Topic 606, Revenue from Contracts with Customers. The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU affect only several narrow aspects of Topic 606. 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. 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 November 2017, FASB issued ASU No. 2017-14, amending ASC Topic 606, Revenue from Contracts with Customers. The ASU amends the codification to incorporate additional previously issued guidance from the SEC. The SEC issued SAB 116 to bring existing SEC staff guidance into conformity with the FASB’s adoption of and amendments to ASC Topic 606, Revenue from Contracts with Customers. The SAB modified SAB Topic 13, Revenue Recognition. ASU 2017-14 supersedes various SEC paragraphs and amends an SEC paragraph pursuant to the issuance of SAB 116. 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.

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.

In March 2018, FASB issued ASU No. 2018-03, Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU clarifies the guidance in ASU No. 2016-01. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years beginning after June 15, 2018. The Company is currently evaluating the provisions of ASU No. 2018-03 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 a lessee.

Derivatives and Hedging (Topic 815) In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities. The amendments in this ASU better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The new authoritative guidance will be effective for reporting periods after January 1, 2019 with early adoption permitted. The Company is evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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. The amendments in the ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all of the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) or the modified ward is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified.  If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified. (3) The classification of the modified award is an equity instrument or liability instrument is the same as the classification of the original award immediately before the original award is modified.  The amendments are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. The amendments should be applied prospectively to an award modified on or after the adoption date. 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 evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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. The ASU will require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this update apply to all entities that have restricted cash or restricted cash equivalents and are required to present a statement of cash flows under Topic 230. Theamendment 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.

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.

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 early adopted these amendments in 2017, which did not have 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.

Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815) In July 2017, FASB issued ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception. The ASU simplifies the accounting for certain financial instruments with down round features, a provision in an equity-linked financial instrument (or embedded feature) that provides a downward adjustment of the current exercise price based on the price of future equity offerings. Down round features are common in warrants, convertible preferred shares, and convertible debt instruments. The ASU requires companies to disregard the down round feature when assessing whether the instrument is indexed to its own stock, for purposes of determining liability or equity classification. Companies that provide earnings per share (EPS) data will adjust their basic EPS calculation for the effect of the feature when triggered (i.e., when the exercise price of the related equity-linked financial instrument is adjusted downward because of the down round feature) and will also recognize the effect of the trigger within equity. 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. 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. 2017‑11 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Income Statement—Reporting Comprehensive Income (Topic 220) In February 2018, FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The ASU helps organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act. The ASU provides reporting entities with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The ASU requires reporting entities to disclose: a description of the accounting policy for releasing income tax effects from AOCI; whether they elect to reclassify the stranded income tax effects from the Tax Cuts and Jobs Act; and information about the other income tax effects that are reclassified. The amendments affect any organization that is required to apply the provisions of Topic 220, Income Statement—Reporting Comprehensive Income, and has items of other comprehensive income for which the related tax effects are presented in other comprehensive income as required by GAAP. The amendments are effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company early adopted the new guidance on January 1, 2018. The adoption did not impact the Company’s Statements of Operations, and resulted in a reclassification of $763,000 from accumulated other comprehensive income to retained earnings.

Financial Services—Depository and Lending (Topic 942) In May 2018, FASB issued ASU No. 2018-06, Codification Improvements to Topic 942, Depository and Lending—Income Taxes. The amendments in this ASU supersede the guidance within Subtopic 942-741 that has been rescinded by the OCC and no longer relevant. A cross-reference between Subtopic 740-30, Income Taxes—Other Considerations or Special Areas,and Subtopic 942-740 is being added to the remaining guidance in Subtopic 740-30 to improve the usefulness of the codification. The amendments in this Update are effective upon issuance, as no accounting requirements are affected. The amendments in this ASU do not have a material impact on the Company’s Consolidated Financial Statements.

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Acquisition of a Business

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Acquisition of a Business

Note 3—Acquisitionof a Business

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 $28.9 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 $1.6  million are reflected in non-interest expense on the Consolidated Statements of Operations. 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. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017.

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		5,641
Total assets acquired		453,566
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	$	76,126
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	$	28,874

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 operating results of the Company include the operating results produced by the acquired assets and assumed liabilities of Ridgestone for periods from January 1, 2017 through March 31, 2017 and January 1, 2018 through March 31, 2018. 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.

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Securities

3 Months Ended

Mar. 31, 2018

Investments Debt And Equity Securities [Abstract]

Securities

Note 4—Securities

The followingtablessummarizetheamortizedcostand fairvaluesof securitiesavailable-for-saleand securitiesheld-to-maturityas of the dates shown and thecorrespondingamountsof grossunrealized gainsand losses:

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	22,934	$	2	$	(195	)	$	22,741
U.S. Government agencies		64,293		46		(1,718	)		62,621
Obligations of states, municipalities, and political    subdivisions		32,876		21		(749	)		32,148
Residential mortgage-backed securities
Agency		321,957		—		(12,907	)		309,050
Non-agency		55,341		—		(1,067	)		54,274
Commercial mortgage-backed securities
Agency		76,866		76		(2,815	)		74,127
Non-agency		31,688		—		(1,344	)		30,344
Corporate securities		35,257		315		(209	)		35,363
Other securities		3,628		1,875		(114	)		5,389
Total	$	644,840	$	2,335	$	(21,118	)	$	626,057

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	23,982	$	44	$	(335	)	$	23,691
Residential mortgage-backed securities
Agency		49,946		—		(822	)		49,124
Non-agency		38,338		—		(734	)		37,604
Total	$	112,266	$	44	$	(1,891	)	$	110,419

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	14,999	$	—	$	(136	)	$	14,863
U.S. Government agencies		54,248		—		(1,290	)		52,958
Obligations of states, municipalities, and political    subdivisions		33,405		100		(335	)		33,170
Residential mortgage-backed securities
Agency		315,103		—		(7,646	)		307,457
Non-agency		39,485		104		(75	)		39,514
Commercial mortgage-backed securities
Agency		70,964		45		(1,966	)		69,043
Non-agency		31,763		—		(792	)		30,971
Corporate securities		29,573		507		(104	)		29,976
Other securities		3,627		1,730		(73	)		5,284
Total	$	593,167	$	2,486	$	(12,417	)	$	583,236

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	24,030	$	197	$	(82	)	$	24,145
Residential mortgage-backed securities
Agency		53,731		79		(203	)		53,607
Non-agency		39,402		174		(51	)		39,525
Total	$	117,163	$	450	$	(336	)	$	117,277

The Company did not classify securities as trading during the three months ended March 31, 2018 or during 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 March 31, 2018 and December 31, 2017 are summarized as follows:

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		6	$	9,954	$	(12	)	$	9,817	$	(183	)	$	19,771	$	(195	)
U.S. Government agencies		9		989		(10	)		51,558		(1,708	)		52,547		(1,718	)
Obligations of states, municipalities and    political subdivisions		36		22,418		(475	)		4,374		(274	)		26,792		(749	)
Residential mortgage-backed securities
Agency		43		33,601		(598	)		275,450		(12,309	)		309,051		(12,907	)
Non-agency		6		49,937		(885	)		4,337		(182	)		54,274		(1,067	)
Commercial mortgage-backed securities
Agency		8		7,228		(24	)		55,306		(2,791	)		62,534		(2,815	)
Non-agency		5		—		—			30,344		(1,344	)		30,344		(1,344	)
Corporate securities		6		8,438		(131	)		2,434		(78	)		10,872		(209	)
Other securities		1		—		—			1,880		(114	)		1,880		(114	)
Total		120	$	132,565	$	(2,135	)	$	435,500	$	(18,983	)	$	568,065	$	(21,118	)

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Held-to-maturity
Obligations of states, municipalities, and    political subdivisions		24	$	15,870	$	(286	)	$	1,539	$	(49	)	$	17,409	$	(335	)
Residential mortgage-backed securities
Agency		20		42,065		(572	)		7,060		(250	)		49,125		(822	)
Non-agency		7		33,441		(591	)		4,162		(143	)		37,603		(734	)
Total		51	$	91,376	$	(1,449	)	$	12,761	$	(442	)	$	104,137	$	(1,891	)

			Less than 12 Months					12 Months or Longer					Total
December 31, 2017	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		5	$	4,998	$	(2	)	$	9,865	$	(134	)	$	14,863	$	(136	)
U.S. Government agencies		9		992		(7	)		51,966		(1,283	)		52,958		(1,290	)
Obligations of states, municipalities and    political subdivisions		29		16,059		(137	)		4,453		(198	)		20,512		(335	)
Residential mortgage-backed securities
Agency		41		15,441		(181	)		292,016		(7,465	)		307,457		(7,646	)
Non-agency		1		—		—			4,565		(75	)		4,565		(75	)
Commercial mortgage-backed securities
Agency		7		—		—			57,442		(1,966	)		57,442		(1,966	)
Non-agency		5		—		—			30,971		(792	)		30,971		(792	)
Corporate securities		3		2,406		(80	)		2,489		(24	)		4,895		(104	)
Other securities		1		—		—			1,921		(73	)		1,921		(73	)
Total		101	$	39,896	$	(407	)	$	455,688	$	(12,010	)	$	495,584	$	(12,417	)

			Less than 12 Months					12 Months or Longer					Total
December 31, 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		12	$	7,409	$	(38	)	$	1,548	$	(44	)	$	8,957	$	(82	)
Residential mortgage-backed securities
Agency		13		24,344		(107	)		7,935		(96	)		32,279		(203	)
Non-agency		3		10,458		(10	)		4,382		(41	)		14,840		(51	)
Total		28	$	42,211	$	(155	)	$	13,865	$	(181	)	$	56,076	$	(336	)

Certainsecuritieshave fairvalueslessthanamortizedcostand, therefore,containunrealizedlosses.At March 31, 2018, theCompany evaluatedthesecuritieswhich had an unrealizedlossfor other than temporary impairment and determined alldeclinesin valueto be temporary.Therewere 120 securities available-for-sale with unrealizedlossesat March 31, 2018. There were 51 securities held-to-maturity with unrealizedlossesat March 31, 2018.The Company anticipatesfullrecoveryof amortizedcostwith respectto thesesecuritiesby maturity,or sooner,in theeventof a morefavorablemarketinterestrate environment.The Company does not intendto sellthesesecuritiesand itisnot morelikelythannot thatthe Company willbe requiredto sellthembeforerecoveryof theiramortizedcostbasis,which maybe atmaturity.

The proceedsfromallsalesof securitiesavailable-for-sale,and theassociatedgainsand lossesfor the three months ended March 31, 2018 and 2017 arelistedbelow:

	For the Three Months Ended
	March 31,
	2018		2017
Proceeds	$	—	$	8
Gross gains		—		8
Gross losses		—		—

There were no gains or losses reclassified fromaccumulatedothercomprehensive income (loss)intoearningsforthe three months ended March 31, 2018 and$8,000 for the three months ended March 31, 2017.

Securities pledged at March 31, 2018 and December 31, 2017 had carrying amounts of $348.6 million and $262.5 million,respectively.At March 31, 2018 and December 31, 2017, of thosepledged,thecarryingamountsof securitiespledgedas collateralforpublicfund depositswere $160.3 million and $99.3 million,respectively, and forcustomerrepurchaseagreementsof $32.9 million and $34.8 million,respectively.At March 31, 2018 and December 31, 2017, securities pledged for advances from the Federal Home Loan Bank were $155.5 million and $128.4 million, respectively. Othersecuritieswere pledgedforpurposesrequiredor permittedby law. At March 31, 2018 and December 31, 2017, therewere no holdingsof securitiesof any one issuer,otherthantheU.S.Governmentand itsagencies,in an amountgreaterthan10% of stockholders’ equity.

At March 31, 2018, theamortizedcostand fairvalueof debtsecuritiesareshown by contractual maturity.Expectedmaturitiesmaydifferfromcontractualmaturitiesifborrowershave therightto callor prepay obligationswith or withoutcallor prepaymentpenalties.Securitiesnot due ata singlematuritydateareshown separately.

	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	5,695	$	5,689
Due from one to five years		88,763		87,589
Due from five to ten years		47,396		46,274
Due after ten years		14,042		14,013
Mortgage-backed securities		485,852		467,795
Other securities with no defined maturity		3,092		4,697
Total	$	644,840	$	626,057
Held-to-maturity
Due from one to five years	$	3,523	$	3,500
Due from five to ten years		11,706		11,523
Due after ten years		8,753		8,668
Mortgage-backed securities		88,284		86,728
Total	$	112,266	$	110,419

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Loan and Lease Receivables

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Loan and Lease Receivables

Note 5—Loanand Lease Receivables

Outstanding loan and lease receivables as of the dates shown were categorized as follows:

	March 31,			December 31,
	2018			2017
Commercial real estate	$	840,958		$	891,971
Residential real estate		568,030			577,123
Construction, land development, and other land		117,597			105,996
Commercial and industrial		569,647			522,254
Installment and other		4,082			4,182
Lease financing receivables		177,932			174,165
Total loans and leases		2,278,246			2,275,691
Net unamortized deferred fees and costs		(1,357	)		(1,720	)
Initial direct costs		3,529			3,521
Allowance for loan and lease losses		(17,640	)		(16,706	)
Net loans and leases	$	2,262,778		$	2,260,786

	March 31,			December 31,
	2018			2017
Lease financing receivables
Net minimum lease payments	$	193,146		$	188,986
Unguaranteed residual values		1,613			1,644
Unearned income		(16,827	)		(16,465	)
Total lease financing receivables		177,932			174,165
Initial direct costs		3,529			3,521
Lease financial receivables before allowance for    lease losses	$	181,461		$	177,686

Total loans and leases consist of originated loans and leases, acquired impaired loans and acquired non-impaired loans and leases. At March 31, 2018 and December 31, 2017, total loans and leases included the guaranteed amount of U.S. Government guaranteed loans of $73.2 million and $77.0 million, respectively. At March 31, 2018 and December 31, 2017, installment and other loans included overdraft deposits of $467,000 and $617,000, respectively, which were reclassified as loans. At March 31, 2018 and December 31, 2017, loans and loans held for sale pledged as security for borrowings were $530.0 million and $516.9 million, respectively.

The minimumannualleasepaymentsforleasefinancingreceivablesas of March 31, 2018 are summarizedas follows:

	Minimum Lease Payments
2018	$	51,913
2019		58,980
2020		42,897
2021		25,541
2022		12,131
Thereafter		1,684
Total	$	193,146

Originatedloansand leasesrepresent loan originations or purchasesother than those froma businesscombination.Acquiredimpaired loansareloansacquiredfroma businesscombinationwith evidenceof creditqualitydeteriorationand are accountedforunderASC Topic 310-30. Acquirednon-impairedloansand leasesrepresentloansand leasesacquired froma businesscombinationwithoutevidenceof creditqualitydeteriorationand areaccountedforunderASC Topic 310-20. Leasesand revolvingloansdo not qualifyto be accountedforas acquiredimpairedloansand are accountedforunderASC Topic 310-20. The followingtablessummarizethebalancesforeachrespectiveloanand leasecategoryas of March 31, 2018 and December 31, 2017:

March 31, 2018	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	485,324	$	157,956	$	197,589	$	840,869
Residential real estate		397,516		139,858		30,785		568,159
Construction, land development, and other land		110,092		5,156		1,822		117,070
Commercial and industrial		470,689		8,055		89,985		568,729
Installment and other		3,645		449		36		4,130
Lease financing receivables		151,468		—		29,993		181,461
Total loans and leases	$	1,618,734	$	311,474	$	350,210	$	2,280,418

December 31, 2017	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	513,622	$	166,712	$	211,359	$	891,693
Residential real estate		400,571		144,562		32,085		577,218
Construction, land development, and other land		97,638		5,946		1,845		105,429
Commercial and industrial		416,499		10,008		94,731		521,238
Installment and other		3,724		462		42		4,228
Lease financing receivables		141,329		—		36,357		177,686
Total loans and leases	$	1,573,383	$	327,690	$	376,419	$	2,277,492

The outstandingbalanceand carryingamountof allacquiredimpairedloansaresummarizedbelow. The balancesdo not includean allowanceforloanand leaselossesof $3.5 million and $3.9 million,at March 31, 2018 and December 31, 2017, respectively.

	March 31, 2018				December 31, 2017
	Outstanding Balance		Carrying Value		Outstanding Balance		Carrying Value
Commercial real estate	$	227,322	$	157,956	$	235,898	$	166,712
Residential real estate		200,524		139,858		207,660		144,562
Construction, land development, and other land		13,108		5,156		13,270		5,946
Commercial and industrial		16,079		8,055		18,333		10,008
Installment and other		1,796		449		1,819		462
Total acquired impaired loans	$	458,829	$	311,474	$	476,980	$	327,690

The following table summarizes the changes in accretable yield for acquired impaired loans for the three months ended March 31, 2018 and 2017:

	Three Months Ended
	March 31,
	2018			2017
Beginning balance	$	36,446		$	36,868
Accretion to interest income		(5,691	)		(5,684	)
Reclassification from nonaccretable difference, net		8,545			3,560
Ending balance	$	39,300		$	34,744

Acquired non-impaired loans and leases—The unpaidprincipalbalanceand carryingvalueforacquirednon-impairedloansand leasesat March 31, 2018 and December 31, 2017 were as follows:

	March 31, 2018				December 31, 2017
	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial real estate	$	203,539	$	197,589	$	221,710	$	211,359
Residential real estate		31,291		30,785		32,605		32,085
Construction, land development, and other land		1,881		1,822		1,926		1,845
Commercial and industrial		100,894		89,985		105,529		94,731
Installment and other		350		36		355		42
Lease financing receivables		31,227		29,993		37,476		36,357
Total acquired non-impaired loans and leases	$	369,182	$	350,210	$	399,601	$	376,419

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Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments

Note 6—Allowance forLoanand Lease Losses and ReserveforUnfundedCommitments

Loans and leasesconsideredforinclusionin theallowanceforloanand leaselossesincludeacquired non-impairedloansand leases,thoseacquiredimpairedloanswith creditdeteriorationafteracquisition,and originatedloansand leases.Although allacquiredloansand leasesareincludedin the followingtable,only thosewith creditdeteriorationsubsequentto acquisitiondateareactuallyincludedin the allowanceforloanand leaselosses.

The followingtablessummarizethebalanceand activitywithintheallowanceforloanand leaselosses, thecomponentsof theallowanceforloanand leaselossesin termsof loansand leasesindividuallyand collectivelyevaluatedforimpairment,and correspondingloanand leasebalancesby typefor the three months ended March 31, 2018 and 2017 are as follows:

March 31, 2018	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	$	4,794		$	1,638		$	222		$	7,418		$	41	$	2,593		$	16,706
Provisions (releases)		934			(74	)		397			3,424			20		414			5,115
Charge-offs		(409	)		—			(418	)		(3,085	)		—		(510	)		(4,422	)
Recoveries		—			—			—			6			—		235			241
Ending balance	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640
Ending balance:
Individually evaluated for    impairment	$	1,572		$	153		$	—		$	2,963		$	14	$	—		$	4,702
Collectively evaluated for    impairment		1,827			1,036			177			3,626			11		2,732			9,409
Loans acquired with deteriorated    credit quality		1,920			375			24			1,174			36		—			3,529
Total allowance for loan and lease    losses	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640

March 31, 2018	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	$	12,375	$	2,029	$	—	$	12,598	$	14	$	—	$	27,016
Collectively evaluated for    impairment		670,538		426,272		111,914		548,076		3,667		181,461		1,941,928
Loans acquired with deteriorated    credit quality		157,956		139,858		5,156		8,055		449		—		311,474
Total loans and leases	$	840,869	$	568,159	$	117,070	$	568,729	$	4,130	$	181,461	$	2,280,418

March 31, 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	$	1,945		$	2,483		$	742		$	4,196		$	334		$	1,223		$	10,923
Provisions (releases)		340			1			(325	)		855			(3	)		1,023			1,891
Charge-offs		(238	)		(67	)		—			(215	)		—			(770	)		(1,290	)
Recoveries		—			—			—			—			—			293			293
Ending balance	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817
Ending balance:
Individually evaluated for    impairment	$	—		$	282		$	26		$	966		$	325		$	—		$	1,599
Collectively evaluated for    impairment		1,622			1,470			391			3,210			5			1,769			8,467
Loans acquired with deteriorated    credit quality		425			665			—			660			1			—			1,751
Total allowance for loan and lease    losses	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817

March 31, 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	$	9,764	$	1,262	$	85	$	3,317	$	327	$	—	$	14,755
Collectively evaluated for    impairment		611,397		430,469		99,114		432,036		2,054		162,675		1,737,745
Loans acquired with deteriorated    credit quality		201,689		169,676		6,116		13,114		439		—		391,034
Total loans and leases	$	822,850	$	601,407	$	105,315	$	448,467	$	2,820	$	162,675	$	2,143,534

The Company increased the allowance for loan and lease losses by $934,000 and $894,000 for the three months ended March 31, 2018 and 2017, respectively.For acquired impaired loans, the Company decreased the allowance for loan and lease losses by $345,000 for the three months ended March 31, 2018. The Company increased the allowance for loan and lease losses for acquired impaired loans by $140,000 for the three months ended March 31, 2017.

The followingtablessummarizetherecordedinvestment,unpaidprincipalbalance, and relatedallowanceforloansand leasesconsideredimpaired as of March 31, 2018 and December 31, 2017, which excludes acquired impaired loans:

March 31, 2018	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	6,151	$	7,116	$	—
Residential real estate		1,682		1,653		—
Commercial and industrial		6,441		7,678		—
With an allowance recorded
Commercial real estate		6,224		7,684		1,572
Residential real estate		347		345		153
Commercial and industrial		6,157		9,160		2,963
Installment and other		14		14		14
Total impaired loans	$	27,016	$	33,650	$	4,702

December 31, 2017	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	11,425	$	12,936	$	—
Residential real estate		2,075		2,046		—
Commercial and industrial		5,470		6,774		—
With an allowance recorded
Commercial real estate		2,459		2,634		1,101
Residential real estate		354		351		158
Commercial and industrial		9,314		9,724		2,692
Installment and other		14		14		14
Total impaired loans	$	31,111	$	34,479	$	3,965

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:

March 31, 2018	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,039	$	103
Residential real estate		1,930		10
Commercial and industrial		7,300		62
With an allowance recorded
Commercial real estate		4,122		37
Residential real estate		351		1
Commercial and industrial		6,975		102
Installment and other		14		—
Total impaired loans	$	29,731	$	315

March 31, 2017	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,798	$	130
Residential real estate		787		7
Commercial and industrial		1,402		60
With an allowance recorded
Residential real estate		488		1
Construction, land development and other land		86		6
Commercial and industrial		1,881		3
Installment and other		328		4
Total impaired loans	$	14,770	$	211

For purposesof thesetables,theunpaidprincipalbalancerepresentstheoutstandingcontractualbalance. Impairedloansincludeloansthatareindividuallyevaluatedforimpairmentas wellas troubleddebt restructuringsforallloancategories.The sumof non-accrualloansand loanspastdue 90 days stillon accrual willdifferfromthetotalimpairedloanamount.

The followingtablessummarizetheriskratingcategoriesof theloansand leasesconsideredfor inclusionin theallowanceforloanand leaselossescalculation,excludingacquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

March 31, 2018	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	593,209	$	393,416	$	85,634	$	465,449	$	3,648	$	178,759	$	1,720,115
Watch		65,816		29,875		23,127		64,914		2		159		183,893
Special Mention		10,665		2,573		3,153		12,272		17		1,092		29,772
Substandard		13,223		2,437		—		18,039		14		1,162		34,875
Doubtful		—		—		—		—		—		289		289
Loss		—		—		—		—		—		—		—
Total	$	682,913	$	428,301	$	111,914	$	560,674	$	3,681	$	181,461	$	1,968,944

December 31, 2017	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	638,066	$	398,743	$	73,935	$	415,163	$	3,732	$	174,672	$	1,704,311
Watch		58,217		29,165		22,380		67,024		20		190		176,996
Special Mention		14,645		2,251		3,168		13,535		—		1,293		34,892
Substandard		14,053		2,497		—		15,508		14		1,259		33,331
Doubtful		—		—		—		—		—		272		272
Loss		—		—		—		—		—		—		—
Total	$	724,981	$	432,656	$	99,483	$	511,230	$	3,766	$	177,686	$	1,949,802

The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at March 31, 2018 and December 31, 2017:

March 31, 2018	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	$	9,266	$	—	$	—	$	8,194	$	17,460	$	665,453	$	682,913
Residential real estate		79		—		—		1,848		1,927		426,374		428,301
Construction, land development, and    other land		—		—		—		—		—		111,914		111,914
Commercial and industrial		10,064		1,704		—		12,916		24,684		535,990		560,674
Installment and other		17		—		—		14		31		3,650		3,681
Lease financing receivables		1,282		377		—		654		2,313		179,148		181,461
Total	$	20,708	$	2,081	$	—	$	23,626	$	46,415	$	1,922,529	$	1,968,944

December 31, 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	$	4,783	$	968	$	—	$	8,459	$	14,210	$	710,771	$	724,981
Residential real estate		148		—		—		2,092		2,240		430,416		432,656
Construction, land development, and    other land		—		—		—		—		—		99,483		99,483
Commercial and industrial		6,667		967		—		4,348		11,982		499,248		511,230
Installment and other		18		—		—		14		32		3,734		3,766
Lease financing receivables		997		638		—		851		2,486		175,200		177,686
Total	$	12,613	$	2,573	$	—	$	15,764	$	30,950	$	1,918,852	$	1,949,802

At March 31, 2018 and December 31, 2017, theCompany had a recordedinvestmentin troubleddebt restructuringsof $2.1 million and $2.6 million,respectively.The restructuringswere granteddue to borrower financialdifficultyand providefora modificationof loanrepaymentterms.The Company has allocated a specificallowance of $215,000 and $357,000 fortheseloansat March 31, 2018 and December 31, 2017, respectively. In addition,therewere no commitments outstandingon troubleddebtrestructurings.

Loans modifiedas troubleddebtrestructuringsthatoccurredduringthe three months ended March 31, 2018 and year ended December 31, 2017 resulted in $144,000 and $487,000 of charge-offsor permanentreductionsof therecordedinvestmentsin theloans, respectively. There was one commercial real estate loan totaling $125,000 that wasmodified as a troubled debt restructuring during the three months ended March 31, 2018. Troubleddebtrestructuringsthatsubsequentlydefaultedwithintwelvemonthsof therestructuredateduringthe year ended December 31, 2017 had a recordedinvestmentof $144,000. No troubleddebtrestructuringssubsequentlydefaultedwithintwelvemonthsof therestructuredateduringthe three months ended March 31, 2018.

At March 31, 2018 and December 31, 2017, thereserveforunfundedcommitmentswas $1.0 million and $923,000, respectively.During the three months ended March 31, 2018 and 2017, theprovisionsforunfundedcommitments were $113,000 and $50,000, respectively.Therewere no charge-offsor recoveriesrelatedto thereservefor unfundedcommitmentsduringthe periods.

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Servicing Assets

3 Months Ended

Mar. 31, 2018

Transfers And Servicing [Abstract]

Servicing Assets

Note 7—ServicingAssets

Activityforservicingassetsand therelatedchangesin fairvalue for the three months ended March 31, 2018 and 2017 is as follows:

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	21,400		$	21,091
Additions, net		2,102			1,422
Changes in fair value		(1,887	)		(1,290	)
Ending balance	$	21,615		$	21,223

Loans servicedforothersarenot includedin theConsolidatedStatementsof FinancialCondition.The unpaidprincipalbalancesof theseloansservicedforotherswere as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Loan portfolios serviced for:
SBA guaranteed loans		1,066,269		1,021,143
USDA guaranteed loans		93,650		91,758
Total	$	1,159,919	$	1,112,901

 Loan servicing income totaled $563,000 and $919,000 for the three months ended March 31, 2018 and 2017, respectively.

The fairvalueof servicingrightsishighlysensitiveto changesin underlyingassumptions.Changes in prepaymentspeedassumptionshave themostsignificantimpacton thefairvalueof servicingrights.

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.

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Other Real Estate Owned

3 Months Ended

Mar. 31, 2018

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 three months ended March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	10,626		$	16,570
Net additions to OREO		1,044			808
Dispositions of OREO		(1,123	)		(3,929	)
Valuation adjustments		(81	)		(276	)
Ending balance	$	10,466		$	13,173

At March 31, 2018 and December 31, 2017, the balance of real estate owned included $2.9 million and $3.6 million, respectively, of foreclosed residential real estate properties recorded as a result of obtaining physical possession of the property.

At March 31, 2018 and December 31, 2017, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process is $2.4 million and $1.9 million, respectively.

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Goodwill, Core Deposit Intangible and Other Intangible Assets

3 Months Ended

Mar. 31, 2018

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018					2017
	Goodwill		CoreDeposit Intangible			Goodwill		Core Deposit Intangible
Beginning balance	$	54,562	$	16,720		$	51,975	$	19,776
Amortization or accretion		—		(761	)		—		(765	)
Ending balance	$	54,562	$	15,959		$	51,975	$	19,011
Accumulated amortization or accretion	N/A		$	14,227		N/A		$	11,175
Weighted average remaining amortization or accretion    period	N/A		5.4 years			N/A		6.4 Years

The Company had other intangible assets of $32,000 and $36,000 as of March 31, 2018 and December 31, 2017, respectively, related to trademark-related transactions.

The following table presents the estimated amortization expense for core deposit intangible and other intangible assets recognized at March 31, 2018:

	Estimated Amortization
2018	$	2,295
2019		3,050
2020		3,027
2021		3,017
2022		3,010
Thereafter		1,592
Total	$	15,991

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 10—IncomeTaxes

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 three months ended March 31, 2018 and 2017 were 16.3% and 40.9%, respectively. The reduction in the effective tax rate is primarily a result of the passage of the Tax Cuts and Jobs Act (the “Tax Act”), which was enacted on December 22, 2017. Among other things, the Tax Act reduces the corporate federal income tax rate from 35% to 21%, effective January 1, 2018. Also on December 22, 2017, the SEC issued Staff Accounting Bulletin 118 (“SAB 118”), which provides guidance on accounting for the Tax Act’s impact. SAB 118 provides a measurement period, not to extend beyond one year from the date of enactment during which a company, acting in good faith, may complete the accounting for the impacts of the Tax Act. The Company recorded a net income tax benefit of $724,000 as a result of the rate change.

Net deferred tax assets remained relatively unchanged at$47.4 million at March 31, 2018 compared to December 31, 2017. The reduction in the Company’s net operation loss carryforwards being applied to the current year tax liability was offset by an increase in its deferred tax asset related to unrealized holding losses on securities available-for-sale.

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Deposits

3 Months Ended

Mar. 31, 2018

Deposits [Abstract]

Deposits

Note 11—Deposits

The composition of deposits was as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Non-interest bearing demand deposits	$	749,892	$	760,887
Interest bearing checking accounts		196,802		186,611
Money market demand accounts		382,282		349,862
Other savings		439,277		437,212
Time deposits (below $250,000)		665,541		627,255
Time deposits ($250,000 and above)		90,753		81,502
Total deposits	$	2,524,547	$	2,443,329

Time deposits of $250,000 or more included nobrokered deposits at March 31, 2018 or December 31, 2017.

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Federal Home Loan Bank Advances

3 Months Ended

Mar. 31, 2018

Federal Home Loan Banks [Abstract]

Federal Home Loan Bank Advances

Note 12—FederalHomeLoanBankAdvances

The followingtablesummarizestheFHLBadvancesas of March 31, 2018 and December 31, 2017: 

	March 31,			December 31,
	2018			2017
Federal Home Loan Bank advances	$	380,000		$	361,506
Weighted average cost		1.88	%		1.49	%

At March 31, 2018, fixed-rate advances totaled $250.0 million with an interest rate of 2.02% and maturing June 2018.Total floating rate advances were $130.0 million at March 31, 2018, with interest rates of approximately 1.62%and maturitiesrangingfrom April 2018 to May2018. The Company’sadvancesfromtheFHLBarecollateralizedby residentialrealestateloansand securities. The Company’s required investment in FHLB stock is $1 for every $20 in advances. Refer to Note 4—Securities for additional discussion. At March 31, 2018 and December 31, 2017, the Bank has additional borrowing capacity from the FHLB of $797.5 million and $795.0 million, respectively, subject to the availability of proper collateral.  The Bank’s maximumborrowingcapacityislimitedto 35% of totalassets.

 The Company hedgesinterestrateson borrowedfundsusinginterestrateswaps throughwhich the Company receivesvariableamountsand pays fixedamounts.Referto Note 17—DerivativeInstrumentsand Hedge Activitiesforadditionalinformation.

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Other Borrowings

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Other Borrowings

Note 13—Other Borrowings

The following is a summary of the Company’s other borrowings as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Securities sold under agreements to repurchase	$	27,815	$	31,187
Line of credit		—		—
Total	$	27,815	$	31,187

Securitiessoldunderagreementsto repurchaserepresenta demanddepositproductofferedto customers thatsweep balancesin excessof theFDICinsurancelimitintoovernightrepurchaseagreements.The Company pledgessecuritiesas collateralfortherepurchaseagreements.Referto Note 4—Securitiesforadditional discussion.

OnOctober13,2016,inconnectionwiththeRidgestoneacquisition,theCompany enteredintoa$30.0million creditagreementwitha correspondent bank.At March 31, 2018 and December 31, 2017,the interestratewas 3.75%. 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. When the outstanding balance is reduced to $5.0 million, the line of credit will be converted to a revolving line of credit with credit availability up to $5.0 million until maturity.  In July 2017, the Company repaid the outstanding balance, in full, under this line of credit of $16.2 million with proceeds from its initial public offering (“IPO”). The line of credit matured on October 12, 2017 and carried an interest rate equal to the Prime Rate. On October 12, 2017, the Company amended the credit agreement, which extended the maturity date to October 11, 2018. The amended revolving line of credit bears interest at either the London Interbank Offered Rate (“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 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. At March 31, 2018 and December 31, 2017, the line of credit has not been drawn upon, so an interest rate option has not been selected.

The followingtablepresentsshort-termcreditlinesavailableforuse, forwhich theCompany did not have an outstandingbalanceas of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Federal Reserve Bank of Chicago discount window line	$	156,077	$	144,248
Available federal funds lines		55,000		55,000

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Junior Subordinated Debentures

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Junior Subordinated Debentures

Note 14—Junior Subordinated Debentures

At March 31, 2018 and December 31, 2017, theCompany’sjuniorsubordinateddebenturesby issuancewere as follows:

Name of Trust	Aggregate Principal Amount March 31, 2018			Aggregate Principal Amount December 31, 2017			Stated Maturity	Contractual Rate at March 31, 2018			Interest Rate Spread
MetropolitanStatutory Trust 1	$	35,000		$	35,000		March17, 2034		4.97	%	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		(8,700	)		(8,853	)
Total liability, at carrying value	$	27,800		$	27,647

 In 2004, theCompany’spredecessor,MetropolitanBank Group, Inc.,issued$35.0 millionfloatingrate juniorsubordinateddebenturesto MetropolitanStatutoryTrust1, which was formedfortheissuanceof trust preferredsecurities.The debenturesbearinterestatthree LIBOR plus 2.79% (4.97%and 4.39% at March 31, 2018 and December 31, 2017, respectively).Interestispayablequarterly.The Company has therightto redeemthedebentures,in whole or in part,on any interestpaymentdateon or after March2009. Accruedinterestpayablewas $65,000 and $62,000 as of March 31, 2018 and December 31, 2017, respectively.

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 March 31, 2018 and December 31, 2017), 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 March 31, 2018 or December 31, 2017.

The Trustsarenot consolidatedwith theCompany. Accordingly,theCompany reportsthesubordinated debenturesheldby theTrustsas liabilities.The Company owns allof thecommonsecuritiesof eachtrust.The juniorsubordinateddebenturesqualify,and aretreatedas, Tier1 regulatorycapitalof theCompany subjectto regulatorylimitations.The trustpreferredsecuritiesissuedby eachtrustrankequallywith thecommonsecurities in rightof payment,exceptthatifan eventof defaultundertheindenturegoverningthenoteshas occurredand is continuing,thepreferredsecuritieswillrankseniorto thecommonsecuritiesin rightof payment.

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Commitments and Contingent Liabilities

3 Months Ended

Mar. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingent Liabilities

Note 15—Commitmentsand Contingent Liabilities

Legalcontingencies—Intheordinarycourseofbusiness,theCompanyandBankhavevarious outstandingcommitmentsandcontingentliabilitiesthatarenotrecognizedintheaccompanyingconsolidated financialstatements.Inaddition,theCompanymaybeadefendantincertainclaimsandlegalactionsarisinginthe ordinarycourseofbusiness.Intheopinionofmanagement,afterconsultationwithlegalcounsel,theultimate dispositionofthesemattersiscurrentlynotexpectedtohaveamaterialadverseeffectonthe Company’s Consolidated Statements of Financial Condition.

Operatingleasecommitments—The Company has enteredintovariousoperatingleaseagreements primarilyforfacilitiesand landon which bankingfacilitiesarelocated.Certainleaseagreementshave renewal optionsattheend of theoriginalleasetermand certainleaseagreementshave escalationclausesin therent payments.

The minimumannualrentalcommitmentsforoperatingleasessubsequentto March 31, 2018, exclusiveof taxesand othercharges,aresummarizedas follows:

	MinimumRental Commitments
2018	$	2,307
2019		2,600
2020		2,089
2021		1,809
2022		972
Thereafter		2,073
Total	$	11,850

The Company’srentalexpensesforthe three months ended March 31, 2018 and 2017  were $1.2 millionand $1.1 million,respectively.During the three months ended March 31, 2018 and 2017, theCompany received $170,000 and $190,000, respectively,in subleaseincomewhich isincludedin the ConsolidatedStatementsof Operationsas a reductionof occupancyexpense.The total amount of minimum rentals to be received in the future on these subleases is approximately $1.8 million, and the leases have contractual lives extending through 2025. In additionto theabove requiredleasepayments, the Company has contractualobligationsrelated primarilyto informationtechnologycontractsand othermaintenancecontracts.The amountsarenot material.

Commitmentsto extend credit—The Bank ispartyto financialinstrumentswith off-balancesheetrisk in thenormalcourseof businessto meetthefinancingneedsof itscustomers.These financialinstrumentsinclude commitmentsto extendcreditand standbylettersof credit.Those instrumentsinvolve,to varyingdegrees, elementsof creditand interestrateriskin excessof theamountrecognizedin theConsolidatedStatementsof FinancialCondition.The contractualor notionalamountsof thoseinstrumentsreflecttheextentof involvement theBank has in particularclassesof financialinstruments.

The Company’s exposureto creditlossin theeventof non-performanceby theotherpartyto thefinancial instrumentforcommitmentsto extendcreditand standbylettersof creditisrepresentedby thecontractualor notionalamountof thoseinstruments.The Bank usesthesamecreditpoliciesin makingcommitmentsand conditionalobligationsas itdoes forfundedinstruments.The Bank does not anticipateany materiallossesas a resultof thecommitmentsand standbylettersof credit.

The followingtablesummarizesthecontractor notionalamountof outstandingloanand lease commitmentsat March 31, 2018 and December 31, 2017:

	March 31,				December 31,
	2018				2017
	Fixed Rate		Variable Rate		Fixed Rate		Variable Rate
Commitments to extend credit	$	58,074	$	510,822	$	55,924	$	467,429
Standby letters of credit		2,570		3,538		1,226		3,337
Total	$	60,644	$	514,360	$	57,150	$	470,766

Commitmentsto extendcreditareagreementsto lendto a customeras long as thereisno violationof any conditionestablishedin thecontract.Commitmentsgenerallyhave fixedexpirationdatesor other terminationclausesand mayrequirepaymentof a fee.Sincemanyof thecommitmentsareexpectedto expire withoutbeingdrawn upon, thetotalcommitmentamountdoes not necessarilyrepresentfuturecashrequirements. The Bank evaluateseachcustomer’screditworthinesson a case-by-casebasis.The amountof collateralobtained, ifdeemednecessaryby theBank upon extensionof credit,isbasedon management’screditevaluationof the counterparty.Collateralisprimarilyobtainedin theformof commercialand residentialrealestate(including incomeproducingcommercialproperties).

Standby lettersof creditareconditionalcommitmentsissuedby theBank to guaranteeto a third-party theperformanceof a customer.Those guaranteesareprimarilyissuedto supportpublicand privateborrowing arrangements,bond financingand similartransactions.The creditriskinvolvedin issuinglettersof creditis essentiallythesameas thatinvolvedin extendingloanfacilitiesto customers.

Commitmentsto makeloansaregenerallymadeforperiodsof 90 days or less.The fixedrateloan commitmentshave interestratesrangingfrom1.00% to 19.50% and maturitiesup to 2024. Variablerateloan commitmentshave interestratesrangingfrom2.45% to 11.75% and maturitiesup to 2040.

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Fair Value Measurement

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurement

Note 16—Fair Value Measurement

Fairvalueistheexchangepricethatwould be receivedforan assetor paidto transfera liability(exit price)in theprincipalor mostadvantageousmarketfortheassetor liabilityin an orderlytransactionbetween marketparticipantson themeasurementdate.In addition,theCompany has theabilityto obtainfairvaluesfor marketsthatarenot accessible.

These typesof inputscreatethefollowingfairvaluehierarchy:

Level 1—Quoted pricesin activemarketsforidenticalassetsor liabilities.

Level 2—Quoted pricesforsimilarinstrumentsin activemarkets,quotedpricesforidenticalor similar instrumentsin marketsthatarenot activeand model-derivedvaluationswhose inputsareobservableor whose significantvaluedriversareobservable.

Level 3—Unobservableinputsthataresupportedby littleor no marketactivityand thataresignificant to thefairvalueof theassetor liability.Unobservableinputsareused to measurefairvalueto theextentthat observableinputsarenot available.The Company’sown dataused to developunobservableinputsmaybe adjustedformarketconsiderationswhen reasonablyavailable.

A financialinstrument’scategorizationwithinthevaluationhierarchyisbasedupon thelowestlevelof inputthatissignificantto thefairvaluemeasurement.The Company’sassessmentof thesignificanceof a particularinputto thefairvaluemeasurementin itsentiretyrequiresjudgment,and considersfactorsspecificto assetsand liabilities.

The Company used thefollowingmethodsand significantassumptionsto estimatefairvalueforcertain assetsmeasuredand carriedatfairvalueon a recurringbasis:

Securitiesavailable-for-sale—The Company obtainsfairvaluemeasurementsfroman independent pricingservice.Managementreviewstheproceduresused by thethirdparty,includingsignificantinputsused in thefairvaluecalculations.The fairvaluemeasurementsconsiderobservabledatathatmayincludedealerquotes, marketspreads,cashflows,theU.S.Treasuryyieldcurve,livetradinglevels,tradeexecutiondata,market consensusprepaymentspeeds,creditinformationand thebond’stermsand conditions,amongotherthings.When marketquotesarenot readilyaccessibleor available,alternativeapproachesareutilized,such as matrixor model pricing.

The Company’s methodology for pricing non-rated bonds focuses on three distinct inputs: equivalent rating, yield and other pricing terms. To determine the rating for a given non-rated municipal bond, the Company references a publicly issued bond by the same issuer if available as well as other additional key metrics to support the credit worthiness. Typically, pricing for these types of bonds would require a higher yield than a similar rated bond from the same issuer. A reduction in price is applied to the rating obtained from the comparable bond, as the Company believes if liquidated, a non-rated bond would be valued less than a similar bond with a verifiable rating. The reduction applied by the Company is one notch lower (i.e. a “AA” rating for a comparable bond would be reduced to “AA-” for the Company’s valuation). In 2018 and 2017, all of the ratings derived by the Company were “BBB” or better with and without comparable bond proxies. The fair value measurement of municipal bonds is sensitive to the rating input, as a higher rating typically results in an increased valuation. The remaining pricing inputs used in the bond valuation are observable. Based on the rating determined, the Company obtains a corresponding current market yield curve available to market participants. Other terms including coupon, maturity date, redemption price, number of coupon payments per year, and accrual method are obtained from the individual bond term sheets.

Servicingassets—Fairvalueisbasedon a loan-by-loanbasistakingintoconsiderationtheoriginalterm to maturity,thecurrentage of theloanand theremainingtermto maturity.The valuationmethodologyutilized fortheservicingassetsbeginswith generatingfuturecashflowsforeachservicingasset,basedon theirunique characteristicsand market-basedassumptionsforprepaymentspeeds.The presentvalueof thefuturecashflows arethencalculatedutilizingmarket-baseddiscountrateassumptions.

Derivativeinstruments—Interestrateswaps arevaluedby a thirdparty,usingmodelsthatprimarily use marketobservableinputs,such as yieldcurves,and arevalidatedby comparisonwith valuationsprovidedby therespectivecounterparties.Derivativefinancialinstrumentsareincludedin otherassetsand otherliabilitiesin theConsolidatedStatementsof FinancialCondition.

The followingtablessummarizetheCompany’sfinancialassetsand liabilitiesthatwere measuredatfair valueon a recurringbasisat March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	22,741	$	22,741	$	—	$	—
U.S. Government agencies		62,621		—		62,621		—
Obligations of states, municipalities, and political    subdivisions		32,148		—		31,773		375
Mortgage-backed securities; residential
Agency		309,050		—		309,050		—
Non-agency		54,274		—		54,274		—
Mortgage-backed securities; commercial
Agency		74,127		—		74,127		—
Non-agency		30,344		—		30,344		—
Corporate securities		35,363		—		35,363		—
Other securities		5,389		1,880		2,817		692
Servicing assets		21,615		—		—		21,615
Derivative assets		10,500		—		10,500		—
Financial liabilities
Derivative liabilities		1,432		—		1,430		2

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	14,863	$	14,863	$	—	$	—
U.S. Government agencies		52,958		—		52,958		—
Obligations of states, municipalities, and political    subdivisions		33,170		—		32,795		375
Mortgage-backed securities; residential
Agency		307,457		—		307,457		—
Non-agency		39,514		—		39,514		—
Mortgage-backed securities; commercial
Agency		69,043		—		69,043		—
Non-agency		30,971		—		30,971		—
Corporate securities		29,976		—		29,976		—
Other securities		5,284		1,921		2,686		677
Servicing assets		21,400		—		—		21,400
Derivative assets		5,981		—		5,981		—
Financial liabilities
Derivative liabilities		994		—		994		—

During 2016, theCompany acquiredtheservicingassetsand single-issuertrustpreferredsecurities includedin othersecuritiescategorizedas Level3 of thefairvaluehierarchythrougha businesscombination.

TheCompany has purchasedprivately-issuedmunicipalsecuritiesthatare categorizedas Level3. These municipalsecuritiesarebonds issuedforone municipalgovernmententity locatedin theChicago metropolitan area and areprivatelyplaced,non-ratedbonds withoutCommittee on Uniform Security Identification Proceduresnumbers.

The Company did not have any transfersbetweenLevel1 and Level2 of thefairvaluehierarchyduringthe three months ended March 31, 2018 and 2017. The Company’spolicyfordeterminingtransfersbetweenlevelsoccursattheend of thereportingperiodwhen circumstancesin theunderlyingvaluationcriteriachangeand resultin transfer betweenlevels.

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):

	Three Months Ended March 31,
	2018		2017		2018			2017
	Investment Securities				Servicing Assets
Balance, beginning of period	$	1,052	$	1,080	$	21,400		$	21,091
Additions, net		—		—		2,102			1,422
Amortization		1		1		—			—
Change in unrealized loss		14		—		—			—
Change in fair value		—		—		(1,887	)		(1,290	)
Balance, end of period	$	1,067	$	1,081	$	21,615		$	21,223

The followingtablepresentsadditionalinformationabouttheunobservableinputsused in thefairvalue measurementson recurringbasisthatwere categorizedwithinLevel3 of thefairvaluehierarchyas of March 31, 2018:

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	Discountedcash flow	Probability of default	2.2%—2.4%		2.3	%	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	5.6%—16.3%		9.3	%	Decrease
		Discount rate	10.4%—20.6%		14.2	%	Decrease
		Expected weighted average loan life	0.8—7.9 years	5.5 years			Increase

The Company used thefollowingmethodsand significantassumptionsto estimatefairvalueforcertain assetsmeasuredand carriedatfairvalueon a non-recurringbasis:

Impairedloans (excludingacquired impairedloans)—Impairedloans,otherthanthoseexistingon thedateof a businessacquisition,areprimarilycarriedatthefairvalueof theunderlyingcollateral,less estimatedcoststo sell,iftheloaniscollateraldependent.Valuationsof impairedloansthatarecollateral dependentaresupportedby thirdpartyappraisalsin accordancewith theBank’s creditpolicy.Impairedloansthatarenot collateraldependentarenot material.

Assetsheld forsale—Assetsheldforsaleconsistof formerbranchlocations,vacantland,and a house previouslypurchasedforexpansion.Assetsareconsideredheldforsalewhen managementhas approvedto sell theassetsfollowinga branchclosureor otherevents.The propertiesarebeingactivelymarketedand transferred to assetsheldforsalebasedon thelowerof carryingvalueor itsfairvalue,lessestimatedcoststo sell.

Otherrealestateowned—Certainassetsheldwithinotherrealestateowned representrealestateor othercollateralthathas been adjustedto itsestimatedfairvalue,lesscostto sell,as a resultof transferringfrom theloanportfolioatthetimeof foreclosureor repossessionand basedon management’speriodicimpairment evaluation.Fromtimeto time,non-recurringfairvalueadjustmentsto otherrealestateowned arerecordedto reflectpartialwrite-downsbasedon an observablemarketpriceor currentappraisedvalueof property.

Adjustmentsto fairvaluebasedon such non-recurringtransactionsgenerallyresultfromtheapplication of lower-of-cost-or-marketaccountingor write-downsof individualassetsdue to impairment.The following tablessummarizetheCompany’sassetsthatwere measuredatfairvalueon a non-recurringbasis,excluding acquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	10,803	$	—	$	—	$	10,803
Residential real estate		1,876		—		—		1,876
Construction, land development, and other land		—		—		—		—
Commercial and industrial		9,635		—		—		9,635
Installment and other		—		—		—		—
Assets held for sale		9,030		—		—		9,030
Other real estate owned		10,466		—		—		10,466

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	12,783	$	—	$	—	$	12,783
Residential real estate		2,271		—		—		2,271
Construction, land development, and other land		—		—		—		—
Commercial and industrial		12,092		—		—		12,092
Installment and other		—		—		—		—
Assets held for sale		9,779		—		—		9,779
Other real estate owned		10,626		—		—		10,626

The followingtableprovidesa descriptionof thevaluationtechnique,unobservableinputsand qualitativeinformationabouttheCompany’sassetsand liabilitiesclassifiedas Level3 and measuredatfairvalue on a non-recurringbasisas of March 31, 2018:

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 followingmethodsand assumptionswere used by theCompany in estimatingfairvaluesof other assetsand liabilitiesfordisclosurepurposes:

Cash and cash equivalents—For theseshort-terminstruments,thecarryingamountisa reasonable estimateof fairvalue.The fairvaluefortimecertificateswith otherbanks isbasedon themarketvaluesfor comparableinvestments.

Securitiesheld-to-maturity—The Company obtainsfairvaluemeasurementsfroman independent pricingservice.Managementreviewstheproceduresused by thethirdparty,includingsignificantinputsused in thefairvaluecalculations.The fairvaluemeasurementsconsiderobservabledatathatmayincludedealerquotes, marketspreads,cashflows,theU.S.Treasuryyieldcurve,livetradinglevels,tradeexecutiondata,market consensusprepaymentspeeds,creditinformationand thebond’stermsand conditions,amongotherthings.When marketquotesarenot readilyaccessibleor available,alternativeapproachesareutilized,such as matrixor model pricing.

Restrictedstock—The fairvaluehas been determinedto approximatecost.

Loans held forsale—The fairvalueof loansheldforsalearebasedon quotedmarketprices,where available,and determinedby discountedestimatedcashflowsusinginterestratesapproximatingtheCompany’s currentoriginationratesforsimilarloansadjustedto reflecttheinherentcreditrisk.

Loanand leasereceivables,net—For certainvariablerateloansthatrepricefrequentlyand with no significantchangesin creditrisk,fairvalueisestimatedatcarryingvalue.The fairvalueof othertypesof loansis estimatedby discountingfuturecashflows,usingcurrentratesatwhich similarloanswould be madeto borrowerswith similarcreditratingsand forthesameremainingmaturities.

Depositliabilities—The fairvalueof demanddeposits,savingsaccounts,and certainmoneymarket depositsistheamountpayableon demandatthereportingdate.The fairvalueof fixed-maturitycertificatesof depositisestimatedby discountingfuturecashflows,usingratescurrentlyofferedfordepositsof similar remainingmaturities.

FederalHomeLoanBankadvances—The fairvalueof FHLBadvancesisestimatedby discounting theagreementsbasedon maturitiesusingratescurrentlyofferedforFHLBadvancesof similarremaining maturitiesadjustedforprepaymentpenaltiesthatwould be incurrediftheborrowingswere paidoffon the measurementdate.

Securitiessold under agreementsto repurchase—The carryingamountapproximatesfairvaluedue to  maturitiesof lessthanninetydays.

Junior subordinated debentures—The fairvalueof juniorsubordinateddebentures,in theformof trustpreferredsecurities,isdeterminedusingratescurrentlyavailableto theCompany fordebtwith similarterms and remainingmaturities.

Accrued interestreceivableand payable—The carryingamountapproximatesfairvalue.

Commitmentsto extend creditand commercialand standby lettersof credit—The fairvaluesof theseoff-balancesheetcommitmentsto extendcreditand commercialand standbylettersof creditarenot consideredpracticableto estimatebecauseof thelackof quotedmarketpricesand theinabilityto estimatefair valuewithoutincurringexcessivecosts.

The estimatedfairvaluesof financialinstrumentsand levelswithinthefairvaluehierarchyareas follows:

			March 31,				December 31,
	Fair Value		2018				2017
	Hierarchy Level		Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets
Cash and due from banks		1	$	17,396	$	17,396	$	19,404	$	19,404
Interest bearing deposits with other banks		2		110,645		110,645		38,945		38,945
Securities held-to-maturity		2		112,266		110,419		117,163		117,277
Other restricted stock		2		17,177		17,177		16,343		16,343
Loans held for sale		3		8,219		9,122		5,212		5,851
Loans and lease receivables, net		3		2,262,778		2,230,050		2,260,786		2,240,235
Accrued interest receivable		3		6,971		6,971		7,670		7,670
Financial liabilities
Non-interest bearing deposits		2		749,892		749,892		760,887		760,887
Interest bearing deposits		2		1,774,655		1,769,476		1,682,442		1,678,535
Accrued interest payable		2		1,612		1,612		1,306		1,306
Line of credit		2		—		—		—		—
Federal Home Loan Bank advances		2		380,000		380,000		361,506		361,500
Securities sold under repurchase agreement		2		27,815		27,815		31,187		31,187
Junior subordinated debentures		3		27,800		34,025		27,647		33,907

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Derivative Instruments and Hedge Activities

3 Months Ended

Mar. 31, 2018

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 March 31, 2018 and December 31, 2017:

	March 31, 2018						December 31, 2017
			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	$	9,047	$	—	$	250,000	$	5,030	$	38
Derivatives not designated as hedging instruments
Other interest rate swaps		94,123		1,453		1,430		94,726		951		956
Other credit derivatives		1,250		—		2		—		—		—
Total derivatives	$	345,373	$	10,500	$	1,432	$	344,726	$	5,981	$	994

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 March 31, 2018 and December 31, 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 effective during the remaining terms of the swaps and did not recognize any hedge ineffectiveness in current earnings during the three months ended March 31, 2018 and 2017.

Interest recorded on these swap transactions reduced FHLB expense by $61,000and increased FHLB expense by $54,000 during the three months ended March 31, 2018 and 2017, respectively, and is reported as a component of interest expense on FHLB advances.At March 31, 2018, the Company estimates $1.8 million 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 three months ended: 

	March 31, 2018						March 31, 2017
	Amount of Gain Recognized in OCI (Effective Portion)		Amount of Gain Reclassified from OCI to Income as a Decrease to Interest Expense		Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion)		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	$	4,070	$	61	$	—	$	(83	)	$	(54	)	$	—

Other interest rate swaps—The total combined notional amount was $94.1 million as of March 31, 2018 with maturities ranging from January 2020 to November 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 months ended March 31, 2018, there were no transaction fees related to these derivative instruments.During the three months ended March 31, 2017, transaction fees were $113,000.

The following table reflects other interest rate swaps as of March 31, 2018:

Notional amounts	$	94,123
Derivative assets fair value		1,453
Derivative liabilities fair value		1,430
Weighted average pay rates		4.38	%
Weighted average receive rates		4.02	%
Weighted average maturity	6.0 years

Other credit derivative—The total notional amount was $1.3 million as of March 31, 2018 with a maturity date of January 2025. The fair value of the other credit derivative is reflected in other liabilities with corresponding gains or losses reflected in non-interest income. The credit valuation adjustment (“CVA”) related to the other credit derivative resulted in an increase to other non-interest income of $23,000 during the three months ended March 31, 2018.

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 CVA is a fair value adjustment to the derivative to account for this risk. During the three months ended March 31, 2018, the CVA resulted in an increase to non-interest income of $27,000. During the three months ended March 31, 2017, the CVA resulted in a decrease to non-interest income of $13,000.

The Company has entered into a risk participation agreement with a counterparty bank to assume a portion of the credit risk related to borrower transactions. The credit risk related to this derivative is managed through the Company’s loan underwriting process.

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: 

	March 31, 2018						December 31, 2017
	Derivative Assets Fair Value			Derivative Liabilities Fair Value			Derivative Assets Fair Value			Derivative Liabilities Fair Value
Gross amounts recognized	$	10,500		$	1,432		$	5,981		$	994
Less: Amounts offset in the Consolidated Statements of Financial Condition		—			—			—			—
Net amount presented in the Consolidated Statements of Financial Condition	$	10,500		$	1,432		$	5,981		$	994
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions		—			—			(232	)		(232	)
Collateral posted		(10,500	)		(1,424	)		(5,371	)		(745	)
Net credit exposure (excess collateral)	$	—		$	8		$	378		$	17

As of March 31, 2018, the counterparties posted collateral of $11.5 million, which resulted in excess collateral with the Company. For purposes of this disclosure, the amount of posted collateral by the counterparties is limited to the amount offsetting the derivatives asset.

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Share-Based Compensation

3 Months Ended

Mar. 31, 2018

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 common stockto 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. A total of 11,898 restricted shares were also granted during 2017 in connection with the recruitment of employees. These restricted shares vest over a four year period. As of March 31, 2018, there were 1,479,602 shares available for future grants.

The following table discloses the changes in restricted shares for the three months ended March 31, 2018:

	Omnibus Plan
	Number of Shares		Weighted Average Grant Date Fair Value
Beginning balance		70,398	$	20.31
Granted		—	$	—
Vested		—	$	—
Forfeited		—	$	—
Ending balance outstanding at March 31, 2018		70,398	$	20.31

No restricted shares vested during the three months ended March 31, 2018.  

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.

  The following table summarizes restricted stock compensation expense for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - restricted stock	$	112	$	—
Income tax benefit		381		—
Unrecognized compensation expense		1,114		—
Weighted-average amortization period remaining	2.6 years			—

The fair value of the unvested restricted stock awards at March 31, 2018 was $1.6 million.

In April 2018, the Company granted 48,943 shares of restricted voting common stock, par value $0.01 per share. Of this total, 24,345 restricted shares will vest ratably over four years on each anniversary of the grant date, 11,165 restricted shares will vest ratably over three years on each anniversary of the grant date, and 2,268 restricted shares will vest on the first anniversary of the grand date, all subject to continued employment.

In addition, 11,165 performance-based restricted shares were included in the April 2018 grant.  The number of shares which may be earned under the award is dependent upon the Company’s return on average assets over a three-year period ending December 31, 2020, measured in 2018 against the Company’s internal targets and for 2019 and 2020 against a peer group consisting of publicly-traded bank holding companies ranging in asset size from 50% to 200% of the Company’s total assets.  Under the award, 25% of the shares will be earned at threshold performance, 100% will be earned at target and 50th percentile performance, and up to 125% of the shares with above target and 75th percentile performance.  Any earned shares will vest on the third anniversary of the grant date.

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, 2017. At the time of the Company’s reincorporation in Delaware, in June 2017, the Board of Directors cancelled the MBG Plan and all the respective 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 three months ended March 31, 2018 or during the year ended December 31, 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 1,696,270 shares remain outstanding under the BYB Plan at March 31, 2018.

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 three months ended March 31, 2018:

	BYB Plan
	Number of Shares			Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Contractual Term (in Years)
Beginning balance		1,783,020		$	11.91	$	19,718		7.6
Granted		—
Expired		—
Exercised		(86,750	)		11.59	$	949
Forfeited		—
Ending balance outstanding at March 31, 2018		1,696,270		$	11.93	$	18,663		7.4
Exercisable at March 31, 2018		1,217,507		$	11.50	$	13,917		7.3

A total of 86,750 stock options were exercised during the three months ended March 31, 2018. During the three months ended March 31, 2018, proceeds from the exercise of stock options were $1.0 million and related tax benefit was $264,000. There were no stock options exercised during the year ended December 31, 2017. No stock options vested during the three months ended March 31, 2018.

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - stock options	$	229	$	286
Income tax benefit		64		113
Unrecognized compensation expense		499		1,466
Weighted-average amortization period remaining	1.1 years		1.8 years

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Earnings per Share

3 Months Ended

Mar. 31, 2018

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 1,696,270 and 1,798,320 shares of common stock were outstanding as of March 31, 2018 and 2017, respectively. There were 70,798 restricted stock awards outstanding at March 31, 2018.  There were no restricted stock awards outstanding at March 31, 2017.

The following represent the calculation of basic and diluted earnings per share for the periods presented:

	Three Months Ended March 31,
	2018		2017
Net income	$	6,768	$	6,560
Less: Dividends on preferred shares		193		189
Net income available to common stockholders	$	6,575	$	6,371
Weighted-average common stock outstanding:
Weighted-average common stock outstanding (basic)		29,291,179		24,616,706
Incremental shares		622,454		461,721
Weighted-average common stock outstanding (dilutive)		29,913,633		25,078,427
Basic earnings per common share	$	0.22	$	0.26
Diluted earnings per common share	$	0.22	$	0.25

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Stockholders' Equity

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Stockholders' Equity

Note 20—Stockholders’ Equity

A summary of the Company’s preferred and common stock at March 31, 2018 and December 31, 2017 is as follows:

	March 31,		December 31,
	2018		2017
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		10,438
Subscription receivable		—		—
Shares outstanding		10,438		10,438
Common stock, voting
Par value	$	0.01	$	0.01
Shares authorized		150,000,000		150,000,000
Shares issued		29,404,048		29,317,298
Shares outstanding		29,404,048		29,317,298

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 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.

 For the three months ended March 31, 2018, the Company declared and paid dividends on the Series B preferred stock of $193,000, compared to $189,000 for the three months ended March 31, 2017.

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Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2018

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)

Note 21—Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) for the Three Months Ended March 31, 2018 and March 31, 2017

(dollars in thousands)	Unrealized Gains (Losses) on Cash Flow Hedges			UnrealizedGains (Losses) on Available-for -Sale Securities			Total Accumulated Other Comprehensive Income (Loss)
Balance, January 1, 2017	$	2,233		$	(9,501	)	$	(7,268	)
Other comprehensive income (loss), net of tax		(18	)		386			368
Balance, March 31, 2017	$	2,215		$	(9,115	)	$	(6,900	)
Balance, January 1, 2018	$	2,913		$	(8,000	)	$	(5,087	)
Reclassification of certain income tax effects from    accumulated other comprehensive income		687			(1,450	)		(763	)
Other comprehensive income (loss), net of tax		2,893			(6,457	)		(3,564	)
Balance, March 31, 2018	$	6,493		$	(15,907	)	$	(9,414	)

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

These unaudited interim condensed consolidated financial statements include the accounts of BylineBancorp, Inc., a Delaware corporation(the“Company,”“we,” “us,”“our”),a bank holding companywhose principalactivityistheownershipand managementof its Illinois state chartered subsidiarybank, BylineBank (the “Bank”), based in Chicago, Illinois.

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 March 31, 2018 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, 2017, 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.

During the three months ended March 31, 2018, we revised our previously issued 2017 consolidated financial statements to properly record a deferred tax liability associated with the bad debt recapture assumed from the acquisition of Ridgestone Financial Services, Inc. (“Ridgestone”) and its subsidiaries on October 14, 2016. The acquisition of Ridgestone was accounted for using the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. 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. The fair value adjustments associated with this transaction were finalized during the fourth quarter of 2017.

We evaluated the effect of the error to our previously issued consolidated financial statements in accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 99 and No. 108,  and, based upon quantitative and qualitative factors, determined that the error was not material to our previously issued consolidated financial statements. Accordingly, we have reflected the change in 2017 and revised our Consolidated Statements of Financial Condition disclosed herein. Consolidated financial statements for periods not presented herein will be revised, as applicable, as they are included in future filings.

All financial information presented in the accompanying notes to these consolidated financial statements was revised to reflect the change. The change did not affect net income or stockholders’ equity for the periods impacted.

The following table presents the effect of the aforementioned revisions to our Consolidated Statements of Financial Condition as of December 31, 2017:

	December 31, 2017
	(dollars in thousands)
	As Reported		Adjustment			As Revised
Goodwill	$	51,975	$	2,587		$	54,562
Deferred tax assets, net		49,963		(2,587	)		47,376
Total assets		3,366,130		—			3,366,130

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 Topics 606 and 610 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, amending ASC Topic 606, Revenue from Contracts with Customers. The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU affect only several narrow aspects of Topic 606. 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. 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 November 2017, FASB issued ASU No. 2017-14, amending ASC Topic 606, Revenue from Contracts with Customers. The ASU amends the codification to incorporate additional previously issued guidance from the SEC. The SEC issued SAB 116 to bring existing SEC staff guidance into conformity with the FASB’s adoption of and amendments to ASC Topic 606, Revenue from Contracts with Customers. The SAB modified SAB Topic 13, Revenue Recognition. ASU 2017-14 supersedes various SEC paragraphs and amends an SEC paragraph pursuant to the issuance of SAB 116. 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.

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.

In March 2018, FASB issued ASU No. 2018-03, Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU clarifies the guidance in ASU No. 2016-01. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years beginning after June 15, 2018. The Company is currently evaluating the provisions of ASU No. 2018-03 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 a lessee.

Derivatives and Hedging (Topic 815) In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities. The amendments in this ASU better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The new authoritative guidance will be effective for reporting periods after January 1, 2019 with early adoption permitted. The Company is evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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. The amendments in the ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all of the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) or the modified ward is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified.  If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified. (3) The classification of the modified award is an equity instrument or liability instrument is the same as the classification of the original award immediately before the original award is modified.  The amendments are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. The amendments should be applied prospectively to an award modified on or after the adoption date. 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 evaluating the new guidance and its impact on the Company’s Consolidated Statements of Operations and Consolidated Statements of Financial Condition.

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. The ASU will require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The amendments in this update apply to all entities that have restricted cash or restricted cash equivalents and are required to present a statement of cash flows under Topic 230. Theamendment 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.

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.

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 early adopted these amendments in 2017, which did not have 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.

Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815) In July 2017, FASB issued ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception. The ASU simplifies the accounting for certain financial instruments with down round features, a provision in an equity-linked financial instrument (or embedded feature) that provides a downward adjustment of the current exercise price based on the price of future equity offerings. Down round features are common in warrants, convertible preferred shares, and convertible debt instruments. The ASU requires companies to disregard the down round feature when assessing whether the instrument is indexed to its own stock, for purposes of determining liability or equity classification. Companies that provide earnings per share (EPS) data will adjust their basic EPS calculation for the effect of the feature when triggered (i.e., when the exercise price of the related equity-linked financial instrument is adjusted downward because of the down round feature) and will also recognize the effect of the trigger within equity. 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. 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. 2017‑11 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Income Statement—Reporting Comprehensive Income (Topic 220) In February 2018, FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The ASU helps organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act. The ASU provides reporting entities with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The ASU requires reporting entities to disclose: a description of the accounting policy for releasing income tax effects from AOCI; whether they elect to reclassify the stranded income tax effects from the Tax Cuts and Jobs Act; and information about the other income tax effects that are reclassified. The amendments affect any organization that is required to apply the provisions of Topic 220, Income Statement—Reporting Comprehensive Income, and has items of other comprehensive income for which the related tax effects are presented in other comprehensive income as required by GAAP. The amendments are effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company early adopted the new guidance on January 1, 2018. The adoption did not impact the Company’s Statements of Operations, and resulted in a reclassification of $763,000 from accumulated other comprehensive income to retained earnings.

Financial Services—Depository and Lending (Topic 942) In May 2018, FASB issued ASU No. 2018-06, Codification Improvements to Topic 942, Depository and Lending—Income Taxes. The amendments in this ASU supersede the guidance within Subtopic 942-741 that has been rescinded by the OCC and no longer relevant. A cross-reference between Subtopic 740-30, Income Taxes—Other Considerations or Special Areas,and Subtopic 942-740 is being added to the remaining guidance in Subtopic 740-30 to improve the usefulness of the codification. The amendments in this Update are effective upon issuance, as no accounting requirements are affected. The amendments in this ASU do not have a material impact on the Company’s Consolidated Financial Statements.

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Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of Aforementioned Revisions to Consolidated Statements of Financial Condition

The following table presents the effect of the aforementioned revisions to our Consolidated Statements of Financial Condition as of December 31, 2017:

	December 31, 2017
	(dollars in thousands)
	As Reported		Adjustment			As Revised
Goodwill	$	51,975	$	2,587		$	54,562
Deferred tax assets, net		49,963		(2,587	)		47,376
Total assets		3,366,130		—			3,366,130

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Acquisition of a Business (Tables)

3 Months Ended

Mar. 31, 2018

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		5,641
Total assets acquired		453,566
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	$	76,126
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	$	28,874

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

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Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments Debt And Equity Securities [Abstract]

Summary of Amortized Cost and Fair Values of Securities Available-for-sale and Held to Maturity

The followingtablessummarizetheamortizedcostand fairvaluesof securitiesavailable-for-saleand securitiesheld-to-maturityas of the dates shown and thecorrespondingamountsof grossunrealized gainsand losses:

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	22,934	$	2	$	(195	)	$	22,741
U.S. Government agencies		64,293		46		(1,718	)		62,621
Obligations of states, municipalities, and political    subdivisions		32,876		21		(749	)		32,148
Residential mortgage-backed securities
Agency		321,957		—		(12,907	)		309,050
Non-agency		55,341		—		(1,067	)		54,274
Commercial mortgage-backed securities
Agency		76,866		76		(2,815	)		74,127
Non-agency		31,688		—		(1,344	)		30,344
Corporate securities		35,257		315		(209	)		35,363
Other securities		3,628		1,875		(114	)		5,389
Total	$	644,840	$	2,335	$	(21,118	)	$	626,057

March 31, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	23,982	$	44	$	(335	)	$	23,691
Residential mortgage-backed securities
Agency		49,946		—		(822	)		49,124
Non-agency		38,338		—		(734	)		37,604
Total	$	112,266	$	44	$	(1,891	)	$	110,419

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale
U.S. Treasury Notes	$	14,999	$	—	$	(136	)	$	14,863
U.S. Government agencies		54,248		—		(1,290	)		52,958
Obligations of states, municipalities, and political    subdivisions		33,405		100		(335	)		33,170
Residential mortgage-backed securities
Agency		315,103		—		(7,646	)		307,457
Non-agency		39,485		104		(75	)		39,514
Commercial mortgage-backed securities
Agency		70,964		45		(1,966	)		69,043
Non-agency		31,763		—		(792	)		30,971
Corporate securities		29,573		507		(104	)		29,976
Other securities		3,627		1,730		(73	)		5,284
Total	$	593,167	$	2,486	$	(12,417	)	$	583,236

December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Held-to-maturity
Obligations of states, municipalities, and political    subdivisions	$	24,030	$	197	$	(82	)	$	24,145
Residential mortgage-backed securities
Agency		53,731		79		(203	)		53,607
Non-agency		39,402		174		(51	)		39,525
Total	$	117,163	$	450	$	(336	)	$	117,277

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 March 31, 2018 and December 31, 2017 are summarized as follows:

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		6	$	9,954	$	(12	)	$	9,817	$	(183	)	$	19,771	$	(195	)
U.S. Government agencies		9		989		(10	)		51,558		(1,708	)		52,547		(1,718	)
Obligations of states, municipalities and    political subdivisions		36		22,418		(475	)		4,374		(274	)		26,792		(749	)
Residential mortgage-backed securities
Agency		43		33,601		(598	)		275,450		(12,309	)		309,051		(12,907	)
Non-agency		6		49,937		(885	)		4,337		(182	)		54,274		(1,067	)
Commercial mortgage-backed securities
Agency		8		7,228		(24	)		55,306		(2,791	)		62,534		(2,815	)
Non-agency		5		—		—			30,344		(1,344	)		30,344		(1,344	)
Corporate securities		6		8,438		(131	)		2,434		(78	)		10,872		(209	)
Other securities		1		—		—			1,880		(114	)		1,880		(114	)
Total		120	$	132,565	$	(2,135	)	$	435,500	$	(18,983	)	$	568,065	$	(21,118	)

			Less than 12 Months					12 Months or Longer					Total
March 31, 2018	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Held-to-maturity
Obligations of states, municipalities, and    political subdivisions		24	$	15,870	$	(286	)	$	1,539	$	(49	)	$	17,409	$	(335	)
Residential mortgage-backed securities
Agency		20		42,065		(572	)		7,060		(250	)		49,125		(822	)
Non-agency		7		33,441		(591	)		4,162		(143	)		37,603		(734	)
Total		51	$	91,376	$	(1,449	)	$	12,761	$	(442	)	$	104,137	$	(1,891	)

			Less than 12 Months					12 Months or Longer					Total
December 31, 2017	# of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-sale
U.S. Treasury Notes		5	$	4,998	$	(2	)	$	9,865	$	(134	)	$	14,863	$	(136	)
U.S. Government agencies		9		992		(7	)		51,966		(1,283	)		52,958		(1,290	)
Obligations of states, municipalities and    political subdivisions		29		16,059		(137	)		4,453		(198	)		20,512		(335	)
Residential mortgage-backed securities
Agency		41		15,441		(181	)		292,016		(7,465	)		307,457		(7,646	)
Non-agency		1		—		—			4,565		(75	)		4,565		(75	)
Commercial mortgage-backed securities
Agency		7		—		—			57,442		(1,966	)		57,442		(1,966	)
Non-agency		5		—		—			30,971		(792	)		30,971		(792	)
Corporate securities		3		2,406		(80	)		2,489		(24	)		4,895		(104	)
Other securities		1		—		—			1,921		(73	)		1,921		(73	)
Total		101	$	39,896	$	(407	)	$	455,688	$	(12,010	)	$	495,584	$	(12,417	)

			Less than 12 Months					12 Months or Longer					Total
December 31, 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		12	$	7,409	$	(38	)	$	1,548	$	(44	)	$	8,957	$	(82	)
Residential mortgage-backed securities
Agency		13		24,344		(107	)		7,935		(96	)		32,279		(203	)
Non-agency		3		10,458		(10	)		4,382		(41	)		14,840		(51	)
Total		28	$	42,211	$	(155	)	$	13,865	$	(181	)	$	56,076	$	(336	)

Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses

The proceedsfromallsalesof securitiesavailable-for-sale,and theassociatedgainsand lossesfor the three months ended March 31, 2018 and 2017 arelistedbelow:

	For the Three Months Ended
	March 31,
	2018		2017
Proceeds	$	—	$	8
Gross gains		—		8
Gross losses		—		—

Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

At March 31, 2018, theamortizedcostand fairvalueof debtsecuritiesareshown by contractual maturity.Expectedmaturitiesmaydifferfromcontractualmaturitiesifborrowershave therightto callor prepay obligationswith or withoutcallor prepaymentpenalties.Securitiesnot due ata singlematuritydateareshown separately.

	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	5,695	$	5,689
Due from one to five years		88,763		87,589
Due from five to ten years		47,396		46,274
Due after ten years		14,042		14,013
Mortgage-backed securities		485,852		467,795
Other securities with no defined maturity		3,092		4,697
Total	$	644,840	$	626,057
Held-to-maturity
Due from one to five years	$	3,523	$	3,500
Due from five to ten years		11,706		11,523
Due after ten years		8,753		8,668
Mortgage-backed securities		88,284		86,728
Total	$	112,266	$	110,419

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Loan and Lease Receivables (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of Outstanding Loan and Lease Receivables

Outstanding loan and lease receivables as of the dates shown were categorized as follows:

	March 31,			December 31,
	2018			2017
Commercial real estate	$	840,958		$	891,971
Residential real estate		568,030			577,123
Construction, land development, and other land		117,597			105,996
Commercial and industrial		569,647			522,254
Installment and other		4,082			4,182
Lease financing receivables		177,932			174,165
Total loans and leases		2,278,246			2,275,691
Net unamortized deferred fees and costs		(1,357	)		(1,720	)
Initial direct costs		3,529			3,521
Allowance for loan and lease losses		(17,640	)		(16,706	)
Net loans and leases	$	2,262,778		$	2,260,786

	March 31,			December 31,
	2018			2017
Lease financing receivables
Net minimum lease payments	$	193,146		$	188,986
Unguaranteed residual values		1,613			1,644
Unearned income		(16,827	)		(16,465	)
Total lease financing receivables		177,932			174,165
Initial direct costs		3,529			3,521
Lease financial receivables before allowance for    lease losses	$	181,461		$	177,686

Summary of Minimum Annual Lease Payments for Lease Financing Receivables

The minimumannualleasepaymentsforleasefinancingreceivablesas of March 31, 2018 are summarizedas follows:

	Minimum Lease Payments
2018	$	51,913
2019		58,980
2020		42,897
2021		25,541
2022		12,131
Thereafter		1,684
Total	$	193,146

Summary of Balances for Each Respective Loan and Lease Category

The followingtablessummarizethebalancesforeachrespectiveloanand leasecategoryas of March 31, 2018 and December 31, 2017:

March 31, 2018	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	485,324	$	157,956	$	197,589	$	840,869
Residential real estate		397,516		139,858		30,785		568,159
Construction, land development, and other land		110,092		5,156		1,822		117,070
Commercial and industrial		470,689		8,055		89,985		568,729
Installment and other		3,645		449		36		4,130
Lease financing receivables		151,468		—		29,993		181,461
Total loans and leases	$	1,618,734	$	311,474	$	350,210	$	2,280,418

December 31, 2017	Originated		Acquired Impaired		Acquired Non- Impaired		Total
Commercial real estate	$	513,622	$	166,712	$	211,359	$	891,693
Residential real estate		400,571		144,562		32,085		577,218
Construction, land development, and other land		97,638		5,946		1,845		105,429
Commercial and industrial		416,499		10,008		94,731		521,238
Installment and other		3,724		462		42		4,228
Lease financing receivables		141,329		—		36,357		177,686
Total loans and leases	$	1,573,383	$	327,690	$	376,419	$	2,277,492

Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans

The outstandingbalanceand carryingamountof allacquiredimpairedloansaresummarizedbelow. The balancesdo not includean allowanceforloanand leaselossesof $3.5 million and $3.9 million,at March 31, 2018 and December 31, 2017, respectively.

	March 31, 2018				December 31, 2017
	Outstanding Balance		Carrying Value		Outstanding Balance		Carrying Value
Commercial real estate	$	227,322	$	157,956	$	235,898	$	166,712
Residential real estate		200,524		139,858		207,660		144,562
Construction, land development, and other land		13,108		5,156		13,270		5,946
Commercial and industrial		16,079		8,055		18,333		10,008
Installment and other		1,796		449		1,819		462
Total acquired impaired loans	$	458,829	$	311,474	$	476,980	$	327,690

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 months ended March 31, 2018 and 2017:

	Three Months Ended
	March 31,
	2018			2017
Beginning balance	$	36,446		$	36,868
Accretion to interest income		(5,691	)		(5,684	)
Reclassification from nonaccretable difference, net		8,545			3,560
Ending balance	$	39,300		$	34,744

Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-Impaired Loans and Leases

Acquired non-impaired loans and leases—The unpaidprincipalbalanceand carryingvalueforacquirednon-impairedloansand leasesat March 31, 2018 and December 31, 2017 were as follows:

	March 31, 2018				December 31, 2017
	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial real estate	$	203,539	$	197,589	$	221,710	$	211,359
Residential real estate		31,291		30,785		32,605		32,085
Construction, land development, and other land		1,881		1,822		1,926		1,845
Commercial and industrial		100,894		89,985		105,529		94,731
Installment and other		350		36		355		42
Lease financing receivables		31,227		29,993		37,476		36,357
Total acquired non-impaired loans and leases	$	369,182	$	350,210	$	399,601	$	376,419

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Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Summary of Allowance for Loan and Lease Losses and Corresponding Loan and Lease Balances

The followingtablessummarizethebalanceand activitywithintheallowanceforloanand leaselosses, thecomponentsof theallowanceforloanand leaselossesin termsof loansand leasesindividuallyand collectivelyevaluatedforimpairment,and correspondingloanand leasebalancesby typefor the three months ended March 31, 2018 and 2017 are as follows:

March 31, 2018	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	$	4,794		$	1,638		$	222		$	7,418		$	41	$	2,593		$	16,706
Provisions (releases)		934			(74	)		397			3,424			20		414			5,115
Charge-offs		(409	)		—			(418	)		(3,085	)		—		(510	)		(4,422	)
Recoveries		—			—			—			6			—		235			241
Ending balance	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640
Ending balance:
Individually evaluated for    impairment	$	1,572		$	153		$	—		$	2,963		$	14	$	—		$	4,702
Collectively evaluated for    impairment		1,827			1,036			177			3,626			11		2,732			9,409
Loans acquired with deteriorated    credit quality		1,920			375			24			1,174			36		—			3,529
Total allowance for loan and lease    losses	$	5,319		$	1,564		$	201		$	7,763		$	61	$	2,732		$	17,640

March 31, 2018	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	$	12,375	$	2,029	$	—	$	12,598	$	14	$	—	$	27,016
Collectively evaluated for    impairment		670,538		426,272		111,914		548,076		3,667		181,461		1,941,928
Loans acquired with deteriorated    credit quality		157,956		139,858		5,156		8,055		449		—		311,474
Total loans and leases	$	840,869	$	568,159	$	117,070	$	568,729	$	4,130	$	181,461	$	2,280,418

March 31, 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	$	1,945		$	2,483		$	742		$	4,196		$	334		$	1,223		$	10,923
Provisions (releases)		340			1			(325	)		855			(3	)		1,023			1,891
Charge-offs		(238	)		(67	)		—			(215	)		—			(770	)		(1,290	)
Recoveries		—			—			—			—			—			293			293
Ending balance	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817
Ending balance:
Individually evaluated for    impairment	$	—		$	282		$	26		$	966		$	325		$	—		$	1,599
Collectively evaluated for    impairment		1,622			1,470			391			3,210			5			1,769			8,467
Loans acquired with deteriorated    credit quality		425			665			—			660			1			—			1,751
Total allowance for loan and lease    losses	$	2,047		$	2,417		$	417		$	4,836		$	331		$	1,769		$	11,817

March 31, 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	$	9,764	$	1,262	$	85	$	3,317	$	327	$	—	$	14,755
Collectively evaluated for    impairment		611,397		430,469		99,114		432,036		2,054		162,675		1,737,745
Loans acquired with deteriorated    credit quality		201,689		169,676		6,116		13,114		439		—		391,034
Total loans and leases	$	822,850	$	601,407	$	105,315	$	448,467	$	2,820	$	162,675	$	2,143,534

Summary of Recorded Investment, Unpaid Principal Balance, and Related Allowance for Loans and Leases Considered Impaired

The followingtablessummarizetherecordedinvestment,unpaidprincipalbalance, and relatedallowanceforloansand leasesconsideredimpaired as of March 31, 2018 and December 31, 2017, which excludes acquired impaired loans:

March 31, 2018	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	6,151	$	7,116	$	—
Residential real estate		1,682		1,653		—
Commercial and industrial		6,441		7,678		—
With an allowance recorded
Commercial real estate		6,224		7,684		1,572
Residential real estate		347		345		153
Commercial and industrial		6,157		9,160		2,963
Installment and other		14		14		14
Total impaired loans	$	27,016	$	33,650	$	4,702

December 31, 2017	Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded
Commercial real estate	$	11,425	$	12,936	$	—
Residential real estate		2,075		2,046		—
Commercial and industrial		5,470		6,774		—
With an allowance recorded
Commercial real estate		2,459		2,634		1,101
Residential real estate		354		351		158
Commercial and industrial		9,314		9,724		2,692
Installment and other		14		14		14
Total impaired loans	$	31,111	$	34,479	$	3,965

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:

March 31, 2018	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,039	$	103
Residential real estate		1,930		10
Commercial and industrial		7,300		62
With an allowance recorded
Commercial real estate		4,122		37
Residential real estate		351		1
Commercial and industrial		6,975		102
Installment and other		14		—
Total impaired loans	$	29,731	$	315

March 31, 2017	Average Recorded Investment		Interest Income Recognized
With no related allowance recorded
Commercial real estate	$	9,798	$	130
Residential real estate		787		7
Commercial and industrial		1,402		60
With an allowance recorded
Residential real estate		488		1
Construction, land development and other land		86		6
Commercial and industrial		1,881		3
Installment and other		328		4
Total impaired loans	$	14,770	$	211

Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation

The followingtablessummarizetheriskratingcategoriesof theloansand leasesconsideredfor inclusionin theallowanceforloanand leaselossescalculation,excludingacquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

March 31, 2018	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	593,209	$	393,416	$	85,634	$	465,449	$	3,648	$	178,759	$	1,720,115
Watch		65,816		29,875		23,127		64,914		2		159		183,893
Special Mention		10,665		2,573		3,153		12,272		17		1,092		29,772
Substandard		13,223		2,437		—		18,039		14		1,162		34,875
Doubtful		—		—		—		—		—		289		289
Loss		—		—		—		—		—		—		—
Total	$	682,913	$	428,301	$	111,914	$	560,674	$	3,681	$	181,461	$	1,968,944

December 31, 2017	Commercial Real Estate		Residential Real Estate		Construction, Land Development, and Other Land		Commercial and Industrial		Installment and Other		Lease Financing Receivables		Total
Pass	$	638,066	$	398,743	$	73,935	$	415,163	$	3,732	$	174,672	$	1,704,311
Watch		58,217		29,165		22,380		67,024		20		190		176,996
Special Mention		14,645		2,251		3,168		13,535		—		1,293		34,892
Substandard		14,053		2,497		—		15,508		14		1,259		33,331
Doubtful		—		—		—		—		—		272		272
Loss		—		—		—		—		—		—		—
Total	$	724,981	$	432,656	$	99,483	$	511,230	$	3,766	$	177,686	$	1,949,802

Summary of Contractual Delinquency Information

The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at March 31, 2018 and December 31, 2017:

March 31, 2018	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	$	9,266	$	—	$	—	$	8,194	$	17,460	$	665,453	$	682,913
Residential real estate		79		—		—		1,848		1,927		426,374		428,301
Construction, land development, and    other land		—		—		—		—		—		111,914		111,914
Commercial and industrial		10,064		1,704		—		12,916		24,684		535,990		560,674
Installment and other		17		—		—		14		31		3,650		3,681
Lease financing receivables		1,282		377		—		654		2,313		179,148		181,461
Total	$	20,708	$	2,081	$	—	$	23,626	$	46,415	$	1,922,529	$	1,968,944

December 31, 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	$	4,783	$	968	$	—	$	8,459	$	14,210	$	710,771	$	724,981
Residential real estate		148		—		—		2,092		2,240		430,416		432,656
Construction, land development, and    other land		—		—		—		—		—		99,483		99,483
Commercial and industrial		6,667		967		—		4,348		11,982		499,248		511,230
Installment and other		18		—		—		14		32		3,734		3,766
Lease financing receivables		997		638		—		851		2,486		175,200		177,686
Total	$	12,613	$	2,573	$	—	$	15,764	$	30,950	$	1,918,852	$	1,949,802

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Servicing Assets (Tables)

3 Months Ended

Mar. 31, 2018

Transfers And Servicing [Abstract]

Activity for Servicing Assets and Related Changes in Fair Value

Activityforservicingassetsand therelatedchangesin fairvalue for the three months ended March 31, 2018 and 2017 is as follows:

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	21,400		$	21,091
Additions, net		2,102			1,422
Changes in fair value		(1,887	)		(1,290	)
Ending balance	$	21,615		$	21,223

Unpaid Principal Balances of Loans Serviced for Others

The unpaidprincipalbalancesof theseloansservicedforotherswere as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Loan portfolios serviced for:
SBA guaranteed loans		1,066,269		1,021,143
USDA guaranteed loans		93,650		91,758
Total	$	1,159,919	$	1,112,901

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Other Real Estate Owned (Tables)

3 Months Ended

Mar. 31, 2018

Banking And Thrift [Abstract]

Change in Other Real Estate Owned

The following table presents the change in other real estate owned (“OREO”) for the three months ended March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Beginning balance	$	10,626		$	16,570
Net additions to OREO		1,044			808
Dispositions of OREO		(1,123	)		(3,929	)
Valuation adjustments		(81	)		(276	)
Ending balance	$	10,466		$	13,173

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Goodwill, Core Deposit Intangible and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018					2017
	Goodwill		CoreDeposit Intangible			Goodwill		Core Deposit Intangible
Beginning balance	$	54,562	$	16,720		$	51,975	$	19,776
Amortization or accretion		—		(761	)		—		(765	)
Ending balance	$	54,562	$	15,959		$	51,975	$	19,011
Accumulated amortization or accretion	N/A		$	14,227		N/A		$	11,175
Weighted average remaining amortization or accretion    period	N/A		5.4 years			N/A		6.4 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 March 31, 2018:

	Estimated Amortization
2018	$	2,295
2019		3,050
2020		3,027
2021		3,017
2022		3,010
Thereafter		1,592
Total	$	15,991

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Deposits (Tables)

3 Months Ended

Mar. 31, 2018

Deposits [Abstract]

Schedule of Deposits

The composition of deposits was as follows as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Non-interest bearing demand deposits	$	749,892	$	760,887
Interest bearing checking accounts		196,802		186,611
Money market demand accounts		382,282		349,862
Other savings		439,277		437,212
Time deposits (below $250,000)		665,541		627,255
Time deposits ($250,000 and above)		90,753		81,502
Total deposits	$	2,524,547	$	2,443,329

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Federal Home Loan Bank Advances (Tables)

3 Months Ended

Mar. 31, 2018

Federal Home Loan Banks [Abstract]

Summary of FHLB Advances

The followingtablesummarizestheFHLBadvancesas of March 31, 2018 and December 31, 2017: 

	March 31,			December 31,
	2018			2017
Federal Home Loan Bank advances	$	380,000		$	361,506
Weighted average cost		1.88	%		1.49	%

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Other Borrowings (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Summary of Other Borrowings

The following is a summary of the Company’s other borrowings as of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Securities sold under agreements to repurchase	$	27,815	$	31,187
Line of credit		—		—
Total	$	27,815	$	31,187

Summary of Short-term Credit Lines Available for Use

The followingtablepresentsshort-termcreditlinesavailableforuse, forwhich theCompany did not have an outstandingbalanceas of March 31, 2018 and December 31, 2017:

	March 31,		December 31,
	2018		2017
Federal Reserve Bank of Chicago discount window line	$	156,077	$	144,248
Available federal funds lines		55,000		55,000

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Junior Subordinated Debentures (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Junior Subordinated Debentures by Issuance

At March 31, 2018 and December 31, 2017, theCompany’sjuniorsubordinateddebenturesby issuancewere as follows:

Name of Trust	Aggregate Principal Amount March 31, 2018			Aggregate Principal Amount December 31, 2017			Stated Maturity	Contractual Rate at March 31, 2018			Interest Rate Spread
MetropolitanStatutory Trust 1	$	35,000		$	35,000		March17, 2034		4.97	%	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		(8,700	)		(8,853	)
Total liability, at carrying value	$	27,800		$	27,647

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Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Summary of Minimum Annual Rental Commitments for Operating Leases

The minimumannualrentalcommitmentsforoperatingleasessubsequentto March 31, 2018, exclusiveof taxesand othercharges,aresummarizedas follows:

	MinimumRental Commitments
2018	$	2,307
2019		2,600
2020		2,089
2021		1,809
2022		972
Thereafter		2,073
Total	$	11,850

Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments

The followingtablesummarizesthecontractor notionalamountof outstandingloanand lease commitmentsat March 31, 2018 and December 31, 2017:

	March 31,				December 31,
	2018				2017
	Fixed Rate		Variable Rate		Fixed Rate		Variable Rate
Commitments to extend credit	$	58,074	$	510,822	$	55,924	$	467,429
Standby letters of credit		2,570		3,538		1,226		3,337
Total	$	60,644	$	514,360	$	57,150	$	470,766

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Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Summary of Company's Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The followingtablessummarizetheCompany’sfinancialassetsand liabilitiesthatwere measuredatfair valueon a recurringbasisat March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	22,741	$	22,741	$	—	$	—
U.S. Government agencies		62,621		—		62,621		—
Obligations of states, municipalities, and political    subdivisions		32,148		—		31,773		375
Mortgage-backed securities; residential
Agency		309,050		—		309,050		—
Non-agency		54,274		—		54,274		—
Mortgage-backed securities; commercial
Agency		74,127		—		74,127		—
Non-agency		30,344		—		30,344		—
Corporate securities		35,363		—		35,363		—
Other securities		5,389		1,880		2,817		692
Servicing assets		21,615		—		—		21,615
Derivative assets		10,500		—		10,500		—
Financial liabilities
Derivative liabilities		1,432		—		1,430		2

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Financial assets
Securities available-for-sale
U.S. Treasury Notes	$	14,863	$	14,863	$	—	$	—
U.S. Government agencies		52,958		—		52,958		—
Obligations of states, municipalities, and political    subdivisions		33,170		—		32,795		375
Mortgage-backed securities; residential
Agency		307,457		—		307,457		—
Non-agency		39,514		—		39,514		—
Mortgage-backed securities; commercial
Agency		69,043		—		69,043		—
Non-agency		30,971		—		30,971		—
Corporate securities		29,976		—		29,976		—
Other securities		5,284		1,921		2,686		677
Servicing assets		21,400		—		—		21,400
Derivative assets		5,981		—		5,981		—
Financial liabilities
Derivative liabilities		994		—		994		—

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):

	Three Months Ended March 31,
	2018		2017		2018			2017
	Investment Securities				Servicing Assets
Balance, beginning of period	$	1,052	$	1,080	$	21,400		$	21,091
Additions, net		—		—		2,102			1,422
Amortization		1		1		—			—
Change in unrealized loss		14		—		—			—
Change in fair value		—		—		(1,887	)		(1,290	)
Balance, end of period	$	1,067	$	1,081	$	21,615		$	21,223

Summary of Unobservable Inputs Used in the Fair Value Measurements on Recurring Basis

The followingtablepresentsadditionalinformationabouttheunobservableinputsused in thefairvalue measurementson recurringbasisthatwere categorizedwithinLevel3 of thefairvaluehierarchyas of March 31, 2018:

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	Discountedcash flow	Probability of default	2.2%—2.4%		2.3	%	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	5.6%—16.3%		9.3	%	Decrease
		Discount rate	10.4%—20.6%		14.2	%	Decrease
		Expected weighted average loan life	0.8—7.9 years	5.5 years			Increase

Summary of Company's Assets Measured at Fair Value on a Non-Recurring Basis

The following tablessummarizetheCompany’sassetsthatwere measuredatfairvalueon a non-recurringbasis,excluding acquiredimpairedloans,as of March 31, 2018 and December 31, 2017:

			Fair Value Measurements Using
March 31, 2018	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	10,803	$	—	$	—	$	10,803
Residential real estate		1,876		—		—		1,876
Construction, land development, and other land		—		—		—		—
Commercial and industrial		9,635		—		—		9,635
Installment and other		—		—		—		—
Assets held for sale		9,030		—		—		9,030
Other real estate owned		10,466		—		—		10,466

			Fair Value Measurements Using
December 31, 2017	Fair Value		Level 1		Level 2		Level 3
Non-recurring
Impaired loans
(excluding acquired impaired loans)
Commercial real estate	$	12,783	$	—	$	—	$	12,783
Residential real estate		2,271		—		—		2,271
Construction, land development, and other land		—		—		—		—
Commercial and industrial		12,092		—		—		12,092
Installment and other		—		—		—		—
Assets held for sale		9,779		—		—		9,779
Other real estate owned		10,626		—		—		10,626

Summary of the Valuation Technique, Unobservable Inputs and Qualitative Information About the Company's Assets and Liabilities

The followingtableprovidesa descriptionof thevaluationtechnique,unobservableinputsand qualitativeinformationabouttheCompany’sassetsand liabilitiesclassifiedas Level3 and measuredatfairvalue on a non-recurringbasisas of March 31, 2018:

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 estimatedfairvaluesof financialinstrumentsand levelswithinthefairvaluehierarchyareas follows:

			March 31,				December 31,
	Fair Value		2018				2017
	Hierarchy Level		Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets
Cash and due from banks		1	$	17,396	$	17,396	$	19,404	$	19,404
Interest bearing deposits with other banks		2		110,645		110,645		38,945		38,945
Securities held-to-maturity		2		112,266		110,419		117,163		117,277
Other restricted stock		2		17,177		17,177		16,343		16,343
Loans held for sale		3		8,219		9,122		5,212		5,851
Loans and lease receivables, net		3		2,262,778		2,230,050		2,260,786		2,240,235
Accrued interest receivable		3		6,971		6,971		7,670		7,670
Financial liabilities
Non-interest bearing deposits		2		749,892		749,892		760,887		760,887
Interest bearing deposits		2		1,774,655		1,769,476		1,682,442		1,678,535
Accrued interest payable		2		1,612		1,612		1,306		1,306
Line of credit		2		—		—		—		—
Federal Home Loan Bank advances		2		380,000		380,000		361,506		361,500
Securities sold under repurchase agreement		2		27,815		27,815		31,187		31,187
Junior subordinated debentures		3		27,800		34,025		27,647		33,907

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Derivative Instruments and Hedge Activities (Tables)

3 Months Ended

Mar. 31, 2018

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 March 31, 2018 and December 31, 2017:

	March 31, 2018						December 31, 2017
			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	$	9,047	$	—	$	250,000	$	5,030	$	38
Derivatives not designated as hedging instruments
Other interest rate swaps		94,123		1,453		1,430		94,726		951		956
Other credit derivatives		1,250		—		2		—		—		—
Total derivatives	$	345,373	$	10,500	$	1,432	$	344,726	$	5,981	$	994

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 three months ended: 

	March 31, 2018						March 31, 2017
	Amount of Gain Recognized in OCI (Effective Portion)		Amount of Gain Reclassified from OCI to Income as a Decrease to Interest Expense		Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion)		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	$	4,070	$	61	$	—	$	(83	)	$	(54	)	$	—

Summary of Other Interest Rate Swaps

The following table reflects other interest rate swaps as of March 31, 2018

Notional amounts	$	94,123
Derivative assets fair value		1,453
Derivative liabilities fair value		1,430
Weighted average pay rates		4.38	%
Weighted average receive rates		4.02	%
Weighted average maturity	6.0 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: 

	March 31, 2018						December 31, 2017
	Derivative Assets Fair Value			Derivative Liabilities Fair Value			Derivative Assets Fair Value			Derivative Liabilities Fair Value
Gross amounts recognized	$	10,500		$	1,432		$	5,981		$	994
Less: Amounts offset in the Consolidated Statements of Financial Condition		—			—			—			—
Net amount presented in the Consolidated Statements of Financial Condition	$	10,500		$	1,432		$	5,981		$	994
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions		—			—			(232	)		(232	)
Collateral posted		(10,500	)		(1,424	)		(5,371	)		(745	)
Net credit exposure (excess collateral)	$	—		$	8		$	378		$	17

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Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - stock options	$	229	$	286
Income tax benefit		64		113
Unrecognized compensation expense		499		1,466
Weighted-average amortization period remaining	1.1 years		1.8 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 three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Total share-based compensation - restricted stock	$	112	$	—
Income tax benefit		381		—
Unrecognized compensation expense		1,114		—
Weighted-average amortization period remaining	2.6 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 three months ended March 31, 2018:

	Omnibus Plan
	Number of Shares		Weighted Average Grant Date Fair Value
Beginning balance		70,398	$	20.31
Granted		—	$	—
Vested		—	$	—
Forfeited		—	$	—
Ending balance outstanding at March 31, 2018		70,398	$	20.31

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 three months ended March 31, 2018:

	BYB Plan
	Number of Shares			Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Contractual Term (in Years)
Beginning balance		1,783,020		$	11.91	$	19,718		7.6
Granted		—
Expired		—
Exercised		(86,750	)		11.59	$	949
Forfeited		—
Ending balance outstanding at March 31, 2018		1,696,270		$	11.93	$	18,663		7.4
Exercisable at March 31, 2018		1,217,507		$	11.50	$	13,917		7.3

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Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2018

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 for the periods presented:

	Three Months Ended March 31,
	2018		2017
Net income	$	6,768	$	6,560
Less: Dividends on preferred shares		193		189
Net income available to common stockholders	$	6,575	$	6,371
Weighted-average common stock outstanding:
Weighted-average common stock outstanding (basic)		29,291,179		24,616,706
Incremental shares		622,454		461,721
Weighted-average common stock outstanding (dilutive)		29,913,633		25,078,427
Basic earnings per common share	$	0.22	$	0.26
Diluted earnings per common share	$	0.22	$	0.25

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Summary of Preferred and Common Stock

A summary of the Company’s preferred and common stock at March 31, 2018 and December 31, 2017 is as follows:

	March 31,		December 31,
	2018		2017
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		10,438
Subscription receivable		—		—
Shares outstanding		10,438		10,438
Common stock, voting
Par value	$	0.01	$	0.01
Shares authorized		150,000,000		150,000,000
Shares issued		29,404,048		29,317,298
Shares outstanding		29,404,048		29,317,298

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Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2018

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Schedule of Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)

(dollars in thousands)	Unrealized Gains (Losses) on Cash Flow Hedges			UnrealizedGains (Losses) on Available-for -Sale Securities			Total Accumulated Other Comprehensive Income (Loss)
Balance, January 1, 2017	$	2,233		$	(9,501	)	$	(7,268	)
Other comprehensive income (loss), net of tax		(18	)		386			368
Balance, March 31, 2017	$	2,215		$	(9,115	)	$	(6,900	)
Balance, January 1, 2018	$	2,913		$	(8,000	)	$	(5,087	)
Reclassification of certain income tax effects from    accumulated other comprehensive income		687			(1,450	)		(763	)
Other comprehensive income (loss), net of tax		2,893			(6,457	)		(3,564	)
Balance, March 31, 2018	$	6,493		$	(15,907	)	$	(9,414	)

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Basis of Presentation - Schedule of Aforementioned Revisions to Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Goodwill	$ 54,562	$ 54,562	$ 51,975	$ 51,975
Deferred tax assets, net	47,371	47,376
Total assets	$ 3,462,372	3,366,130
As Reported
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Goodwill		51,975
Deferred tax assets, net		49,963
Total assets		3,366,130
Adjustment
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Goodwill		2,587
Deferred tax assets, net		$ (2,587)

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Recently Issued Accounting Pronouncements - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of certain income tax effects from accumulated other comprehensive income	$ (763,000)
ASU 2018-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of certain income tax effects from accumulated other comprehensive income	$ 763,000

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Acquisition of a Business - Additional Information (Details)		3 Months Ended
	Oct. 14, 2016 USD ($) Subsidiary $ / shares shares	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Goodwill		$ 54,562,000	$ 54,562,000	$ 51,975,000	$ 51,975,000
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	$ 28,874,000
Acquisition advisory expenses	1,600,000
Contingent assets or liabilities arising from the acquisition	$ 0

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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	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Consideration paid
Goodwill		$ 54,562	$ 54,562	$ 51,975	$ 51,975
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	5,641
Total assets acquired	453,566
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	76,126
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	$ 28,874

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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 $ / shares shares
Business Acquisition [Line Items]
Stock issued (in shares) | shares	4,199,791
Stock issued (in dollars per share) | $ / shares	$ 16.25

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Acquisition of a Business - Summary of Acquired Non-Impaired Loans as of Acquisition Date (Details) $ in Thousands	Oct. 14, 2016 USD ($)
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.

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Securities - Summary of Amortized Cost and Fair Values of Securities Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 644,840	$ 593,167
Available-for-sale Securities, Gross Unrealized Gains	2,335	2,486
Available-for-sale Securities, Gross Unrealized Losses	(21,118)	(12,417)
Available-for-sale Securities, Fair Value	626,057	583,236
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	22,934	14,999
Available-for-sale Securities, Gross Unrealized Gains	2
Available-for-sale Securities, Gross Unrealized Losses	(195)	(136)
Available-for-sale Securities, Fair Value	22,741	14,863
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	64,293	54,248
Available-for-sale Securities, Gross Unrealized Gains	46
Available-for-sale Securities, Gross Unrealized Losses	(1,718)	(1,290)
Available-for-sale Securities, Fair Value	62,621	52,958
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	32,876	33,405
Available-for-sale Securities, Gross Unrealized Gains	21	100
Available-for-sale Securities, Gross Unrealized Losses	(749)	(335)
Available-for-sale Securities, Fair Value	32,148	33,170
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	321,957	315,103
Available-for-sale Securities, Gross Unrealized Losses	(12,907)	(7,646)
Available-for-sale Securities, Fair Value	309,050	307,457
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	55,341	39,485
Available-for-sale Securities, Gross Unrealized Gains		104
Available-for-sale Securities, Gross Unrealized Losses	(1,067)	(75)
Available-for-sale Securities, Fair Value	54,274	39,514
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	76,866	70,964
Available-for-sale Securities, Gross Unrealized Gains	76	45
Available-for-sale Securities, Gross Unrealized Losses	(2,815)	(1,966)
Available-for-sale Securities, Fair Value	74,127	69,043
Non-Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	31,688	31,763
Available-for-sale Securities, Gross Unrealized Losses	(1,344)	(792)
Available-for-sale Securities, Fair Value	30,344	30,971
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	35,257	29,573
Available-for-sale Securities, Gross Unrealized Gains	315	507
Available-for-sale Securities, Gross Unrealized Losses	(209)	(104)
Available-for-sale Securities, Fair Value	35,363	29,976
Other Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	3,628	3,627
Available-for-sale Securities, Gross Unrealized Gains	1,875	1,730
Available-for-sale Securities, Gross Unrealized Losses	(114)	(73)
Available-for-sale Securities, Fair Value	$ 5,389	$ 5,284

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Securities - Summary of Amortized Cost and Fair Values of Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 112,266	$ 117,163
Held-to-maturity Securities, Gross Unrealized Gains	44	450
Held-to-maturity Securities, Gross Unrealized Losses	(1,891)	(336)
Securities held-to-maturity, fair value	110,419	117,277
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	23,982	24,030
Held-to-maturity Securities, Gross Unrealized Gains	44	197
Held-to-maturity Securities, Gross Unrealized Losses	(335)	(82)
Securities held-to-maturity, fair value	23,691	24,145
Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	49,946	53,731
Held-to-maturity Securities, Gross Unrealized Gains		79
Held-to-maturity Securities, Gross Unrealized Losses	(822)	(203)
Securities held-to-maturity, fair value	49,124	53,607
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	38,338	39,402
Held-to-maturity Securities, Gross Unrealized Gains		174
Held-to-maturity Securities, Gross Unrealized Losses	(734)	(51)
Securities held-to-maturity, fair value	$ 37,604	$ 39,525

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Securities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) Security	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Schedule Of Investments [Line Items]
Trading securities	$ 0		$ 0
Net gains or (losses) reclassified from accumulated other comprehensive income (loss) into earnings	0	$ 8,000
Carrying amount of securities pledged as collateral	$ 348,600,000		$ 262,500,000
Minimum
Schedule Of Investments [Line Items]
Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies	10.00%		10.00%
Federal Home Loan Bank Advances
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 155,500,000		$ 128,400,000
Public Fund Deposits
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	160,300,000		99,300,000
Customer Repurchase Agreements
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 32,900,000		$ 34,800,000
Available-for-sale Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	120
Held-to-maturity Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	51

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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	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	120	101
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 132,565	$ 39,896
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2,135)	(407)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	435,500	455,688
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(18,983)	(12,010)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	568,065	495,584
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (21,118)	$ (12,417)
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	6	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 9,954	$ 4,998
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(12)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	9,817	9,865
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(183)	(134)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	19,771	14,863
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (195)	$ (136)
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	9
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 989	$ 992
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(10)	(7)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	51,558	51,966
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(1,708)	(1,283)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	52,547	52,958
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,718)	$ (1,290)
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	36	29
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 22,418	$ 16,059
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(475)	(137)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	4,374	4,453
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(274)	(198)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	26,792	20,512
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (749)	$ (335)
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	43	41
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 33,601	$ 15,441
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(598)	(181)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	275,450	292,016
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(12,309)	(7,465)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	309,051	307,457
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (12,907)	$ (7,646)
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	6	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 49,937
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(885)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	4,337	$ 4,565
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(182)	(75)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	54,274	4,565
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,067)	$ (75)
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	8	7
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 7,228
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(24)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	55,306	$ 57,442
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(2,791)	(1,966)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	62,534	57,442
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (2,815)	$ (1,966)
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, 12 Months or Longer, Fair Value	$ 30,344	$ 30,971
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(1,344)	(792)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	30,344	30,971
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,344)	$ (792)
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	6	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 8,438	$ 2,406
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(131)	(80)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,434	2,489
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(78)	(24)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	10,872	4,895
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (209)	$ (104)
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	$ 1,880	$ 1,921
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(114)	(73)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	1,880	1,921
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (114)	$ (73)

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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	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Number of Securities | Security	51	28
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 91,376	$ 42,211
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(1,449)	(155)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	12,761	13,865
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(442)	(181)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	104,137	56,076
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (1,891)	$ (336)
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	24	12
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 15,870	$ 7,409
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(286)	(38)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,539	1,548
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(49)	(44)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	17,409	8,957
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (335)	$ (82)
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	20	13
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 42,065	$ 24,344
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(572)	(107)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	7,060	7,935
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(250)	(96)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	49,125	32,279
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (822)	$ (203)
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	7	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 33,441	$ 10,458
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(591)	(10)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	4,162	4,382
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(143)	(41)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Fair Value	37,603	14,840
Held-to-maturity Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (734)	$ (51)

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Securities - Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Available For Sale Securities Gross Realized Gain Loss [Abstract]
Proceeds	$ 8
Gross gains	$ 8

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Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Due in one year or less, Amortized Cost	$ 5,695
Available-for-sale Securities, Due from one to five years, Amortized Cost	88,763
Available-for-sale Securities, Due from five to ten years, Amortized Cost	47,396
Available-for-sale Securities, Due after ten years, Amortized Cost	14,042
Available-for-sale Securities, Amortized Cost	644,840	$ 593,167
Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]
Held-to-maturity Securities, Due from one to five years, Amortized Cost	3,523
Held-to-maturity Securities, Due from five to ten years, Amortized Cost	11,706
Held-to-maturity Securities, Due after ten years, Amortized Cost	8,753
Held-to-maturity Securities, Amortized Cost	112,266	117,163
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Due in one year or less, Fair Value	5,689
Available-for-sale Securities, Due from one to five years, Fair Value	87,589
Available-for-sale Securities, Due from five to ten years, Fair Value	46,274
Available-for-sale Securities, Due after ten years, Fair Value	14,013
Total	626,057	583,236
Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]
Held-to-maturity Securities, Due from one to five years, Fair Value	3,500
Held-to-maturity Securities, Due from five to ten years, Fair Value	11,523
Held-to-maturity Securities, Due after ten years, Fair Value	8,668
Total	110,419	117,277
Mortgage-Backed Securities
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Not due at single maturity, Amortized Cost	485,852
Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]
Held-to-maturity Securities, Mortgage-backed securities, Amortized Cost	88,284
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Not due at single maturity, Fair Value	467,795
Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]
Held-to-maturity Securities, Mortgage-backed securities, Fair Value	86,728
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	3,092
Available-for-sale Securities, Amortized Cost	3,628	3,627
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Not due at single maturity, Fair Value	4,697
Total	$ 5,389	$ 5,284

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Loan and Lease Receivables - Schedule of Outstanding Loan and Lease Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,278,246	$ 2,275,691
Net unamortized deferred fees and costs	(1,357)	(1,720)
Initial direct costs	3,529	3,521
Allowance for loan and lease losses	(17,640)	(16,706)	$ (11,817)	$ (10,923)
Net loans and leases	2,262,778	2,260,786
Lease financing receivables
Net minimum lease payments	193,146	188,986
Unguaranteed residual values	1,613	1,644
Unearned income	(16,827)	(16,465)
Total lease financing receivables	177,932	174,165
Initial direct costs	3,529	3,521
Lease financial receivables before allowance for lease losses	181,461	177,686
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	840,958	891,971
Allowance for loan and lease losses	(5,319)	(4,794)	(2,047)	(1,945)
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	568,030	577,123
Allowance for loan and lease losses	(1,564)	(1,638)	(2,417)	(2,483)
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	117,597	105,996
Allowance for loan and lease losses	(201)	(222)	(417)	(742)
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	569,647	522,254
Allowance for loan and lease losses	(7,763)	(7,418)	(4,836)	(4,196)
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	4,082	4,182
Allowance for loan and lease losses	(61)	(41)	(331)	(334)
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	177,932	174,165
Allowance for loan and lease losses	$ (2,732)	$ (2,593)	$ (1,769)	$ (1,223)

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Loan and Lease Receivables - Additional Information (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,278,246,000	$ 2,275,691,000
Loans held for sale pledged as security for borrowings	530,000,000	516,900,000
Allowance for loan and lease losses	17,640,000	16,706,000	$ 11,817,000	$ 10,923,000
Acquired Impaired Loans
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan and lease losses	3,500,000	3,900,000
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	4,082,000	4,182,000
Overdraft deposits reclassified as loans	467,000	617,000
Allowance for loan and lease losses	61,000	41,000	$ 331,000	$ 334,000
U.S. Government Guaranteed Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 73,200,000	$ 77,000,000

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Loan and Lease Receivables - Summary of Minimum Annual Lease Payments for Lease Financing Receivables (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Receivables [Abstract]
2018	$ 51,913
2019	58,980
2020	42,897
2021	25,541
2022	12,131
Thereafter	1,684
Total	$ 193,146

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Loan and Lease Receivables - Summary of Balances for Each Respective Loan and Lease Category (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 2,280,418	$ 2,277,492	$ 2,143,534
Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,618,734	1,573,383
Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	311,474	327,690
Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	350,210	376,419
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	840,869	891,693	822,850
Commercial Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	485,324	513,622
Commercial Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	157,956	166,712
Commercial Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	197,589	211,359
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	568,159	577,218	601,407
Residential Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	397,516	400,571
Residential Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	139,858	144,562
Residential Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	30,785	32,085
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	117,070	105,429	105,315
Construction, Land Development, and Other Land | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	110,092	97,638
Construction, Land Development, and Other Land | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	5,156	5,946
Construction, Land Development, and Other Land | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,822	1,845
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	568,729	521,238	448,467
Commercial and Industrial | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	470,689	416,499
Commercial and Industrial | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	8,055	10,008
Commercial and Industrial | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	89,985	94,731
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	4,130	4,228	2,820
Installment and Other | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,645	3,724
Installment and Other | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	449	462
Installment and Other | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	36	42
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	181,461	177,686	$ 162,675
Lease Financing Receivables | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	151,468	141,329
Lease Financing Receivables | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 29,993	$ 36,357

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Loan and Lease Receivables - Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans (Details) - Acquired Impaired Loans - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	$ 458,829	$ 476,980
Carrying Value	311,474	327,690
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	227,322	235,898
Carrying Value	157,956	166,712
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	200,524	207,660
Carrying Value	139,858	144,562
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	13,108	13,270
Carrying Value	5,156	5,946
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	16,079	18,333
Carrying Value	8,055	10,008
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Outstanding Balance	1,796	1,819
Carrying Value	$ 449	$ 462

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Loan and Lease Receivables - Summary of Changes in Accretable Yield for Acquired Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Receivables [Abstract]
Beginning balance	$ 36,446	$ 36,868
Accretion to interest income	(5,691)	(5,684)
Reclassification from nonaccretable difference, net	8,545	3,560
Ending balance	$ 39,300	$ 34,744

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Loan and Lease Receivables - Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-impaired Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	$ 2,280,418	$ 2,277,492	$ 2,143,534
Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	369,182	399,601
Loans and leases	350,210	376,419
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	840,869	891,693	822,850
Commercial Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	203,539	221,710
Loans and leases	197,589	211,359
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	568,159	577,218	601,407
Residential Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	31,291	32,605
Loans and leases	30,785	32,085
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	117,070	105,429	105,315
Construction, Land Development, and Other Land | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	1,881	1,926
Loans and leases	1,822	1,845
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	568,729	521,238	448,467
Commercial and Industrial | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	100,894	105,529
Loans and leases	89,985	94,731
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	4,130	4,228	2,820
Installment and Other | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	350	355
Loans and leases	36	42
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	181,461	177,686	$ 162,675
Lease Financing Receivables | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	31,227	37,476
Loans and leases	$ 29,993	$ 36,357

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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
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Allowance for loan and lease losses
Beginning balance	$ 16,706	$ 10,923
Provisions (releases)	5,115	1,891
Charge-offs	(4,422)	(1,290)
Recoveries	241	293
Ending balance	17,640	11,817
Ending balance:
Individually evaluated for impairment			$ 4,702		$ 1,599
Collectively evaluated for impairment			9,409		8,467
Allowance for loan and lease losses	17,640	10,923	17,640	$ 16,706	11,817
Loans and leases ending balance:
Individually evaluated for impairment			27,016		14,755
Collectively evaluated for impairment			1,941,928		1,737,745
Total loans and leases			2,280,418	2,277,492	2,143,534
Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			3,529		1,751
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			311,474		391,034
Commercial Real Estate
Allowance for loan and lease losses
Beginning balance	4,794	1,945
Provisions (releases)	934	340
Charge-offs	(409)	(238)
Ending balance	5,319	2,047
Ending balance:
Individually evaluated for impairment			1,572
Collectively evaluated for impairment			1,827		1,622
Allowance for loan and lease losses	4,794	1,945	5,319	4,794	2,047
Loans and leases ending balance:
Individually evaluated for impairment			12,375		9,764
Collectively evaluated for impairment			670,538		611,397
Total loans and leases			840,869	891,693	822,850
Commercial Real Estate | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			1,920		425
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			157,956		201,689
Residential Real Estate
Allowance for loan and lease losses
Beginning balance	1,638	2,483
Provisions (releases)	(74)	1
Charge-offs		(67)
Ending balance	1,564	2,417
Ending balance:
Individually evaluated for impairment			153		282
Collectively evaluated for impairment			1,036		1,470
Allowance for loan and lease losses	1,638	2,483	1,564	1,638	2,417
Loans and leases ending balance:
Individually evaluated for impairment			2,029		1,262
Collectively evaluated for impairment			426,272		430,469
Total loans and leases			568,159	577,218	601,407
Residential Real Estate | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			375		665
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			139,858		169,676
Construction, Land Development, and Other Land
Allowance for loan and lease losses
Beginning balance	222	742
Provisions (releases)	397	(325)
Charge-offs	(418)
Ending balance	201	417
Ending balance:
Individually evaluated for impairment					26
Collectively evaluated for impairment			177		391
Allowance for loan and lease losses	222	742	201	222	417
Loans and leases ending balance:
Individually evaluated for impairment					85
Collectively evaluated for impairment			111,914		99,114
Total loans and leases			117,070	105,429	105,315
Construction, Land Development, and Other Land | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			24
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			5,156		6,116
Commercial and Industrial
Allowance for loan and lease losses
Beginning balance	7,418	4,196
Provisions (releases)	3,424	855
Charge-offs	(3,085)	(215)
Recoveries	6
Ending balance	7,763	4,836
Ending balance:
Individually evaluated for impairment			2,963		966
Collectively evaluated for impairment			3,626		3,210
Allowance for loan and lease losses	7,418	4,196	7,763	7,418	4,836
Loans and leases ending balance:
Individually evaluated for impairment			12,598		3,317
Collectively evaluated for impairment			548,076		432,036
Total loans and leases			568,729	521,238	448,467
Commercial and Industrial | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			1,174		660
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			8,055		13,114
Installment and Other
Allowance for loan and lease losses
Beginning balance	41	334
Provisions (releases)	20	(3)
Ending balance	61	331
Ending balance:
Individually evaluated for impairment			14		325
Collectively evaluated for impairment			11		5
Allowance for loan and lease losses	41	334	61	41	331
Loans and leases ending balance:
Individually evaluated for impairment			14		327
Collectively evaluated for impairment			3,667		2,054
Total loans and leases			4,130	4,228	2,820
Installment and Other | Receivables Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			36		1
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			449		439
Lease Financing Receivables
Allowance for loan and lease losses
Beginning balance	2,593	1,223
Provisions (releases)	414	1,023
Charge-offs	(510)	(770)
Recoveries	235	293
Ending balance	2,732	1,769
Ending balance:
Collectively evaluated for impairment			2,732		1,769
Allowance for loan and lease losses	$ 2,593	$ 1,223	2,732	2,593	1,769
Loans and leases ending balance:
Collectively evaluated for impairment			181,461		162,675
Total loans and leases			$ 181,461	$ 177,686	$ 162,675

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Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2018 USD ($) Loan	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ 934,000	$ 894,000
Recorded investment in troubled debt restructurings	2,100,000		$ 2,600,000
Specific allowance allocated for loans	215,000		357,000
Commitments outstanding on troubled debt restructurings	0		0
Charge-offs or permanent reductions of recorded investments in loans	144,000		487,000
Recorded investment in troubled debt restructurings that subsequently defaulted within twelve months	0		144,000
Reserve for unfunded commitments	1,000,000		923,000
Provisions for unfunded commitments	113,000	50,000
Charge-offs or recoveries related to reserve for unfunded commitments	$ 0		$ 0
Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Number of loans modified under troubled debt restructuring | Loan	1
Loans modified as troubled debt restructurings	$ 125,000
Acquired Impaired Loans
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ (345,000)	$ 140,000

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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	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Recorded Investment	$ 27,016	$ 31,111
Unpaid Principal Balance	33,650	34,479
Related Allowance	4,702	3,965
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	6,151	11,425
Recorded Investment, With an allowance recorded	6,224	2,459
Unpaid Principal Balance, With no related allowance recorded	7,116	12,936
Unpaid Principal Balance, With an allowance recorded	7,684	2,634
Related Allowance	1,572	1,101
Residential Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,682	2,075
Recorded Investment, With an allowance recorded	347	354
Unpaid Principal Balance, With no related allowance recorded	1,653	2,046
Unpaid Principal Balance, With an allowance recorded	345	351
Related Allowance	153	158
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	6,441	5,470
Recorded Investment, With an allowance recorded	6,157	9,314
Unpaid Principal Balance, With no related allowance recorded	7,678	6,774
Unpaid Principal Balance, With an allowance recorded	9,160	9,724
Related Allowance	2,963	2,692
Installment and Other
Financing Receivable Impaired [Line Items]
Recorded Investment, With an allowance recorded	14	14
Unpaid Principal Balance, With an allowance recorded	14	14
Related Allowance	$ 14	$ 14

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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	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable Impaired [Line Items]
Average Recorded Investment	$ 29,731	$ 14,770
Interest Income Recognized	315	211
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	9,039	9,798
Average Recorded Investment, With an allowance recorded	4,122
Interest Income Recognized, With no related allowance recorded	103	130
Interest Income Recognized, With an allowance recorded	37
Residential Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	1,930	787
Average Recorded Investment, With an allowance recorded	351	488
Interest Income Recognized, With no related allowance recorded	10	7
Interest Income Recognized, With an allowance recorded	1	1
Construction, Land Development, and Other Land
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With an allowance recorded		86
Interest Income Recognized, With an allowance recorded		6
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	7,300	1,402
Average Recorded Investment, With an allowance recorded	6,975	1,881
Interest Income Recognized, With no related allowance recorded	62	60
Interest Income Recognized, With an allowance recorded	102	3
Installment and Other
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With an allowance recorded	$ 14	328
Interest Income Recognized, With an allowance recorded		$ 4

XML

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	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 2,280,418	$ 2,277,492	$ 2,143,534
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	840,869	891,693	822,850
Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	568,159	577,218	601,407
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	117,070	105,429	105,315
Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	568,729	521,238	448,467
Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	4,130	4,228	2,820
Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	181,461	177,686	$ 162,675
Loans Excluding Acquired Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,968,944	1,949,802
Loans Excluding Acquired Impaired Loans | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	682,913	724,981
Loans Excluding Acquired Impaired Loans | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	428,301	432,656
Loans Excluding Acquired Impaired Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	111,914	99,483
Loans Excluding Acquired Impaired Loans | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	560,674	511,230
Loans Excluding Acquired Impaired Loans | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,681	3,766
Loans Excluding Acquired Impaired Loans | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	181,461	177,686
Loans Excluding Acquired Impaired Loans | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,720,115	1,704,311
Loans Excluding Acquired Impaired Loans | Pass | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	593,209	638,066
Loans Excluding Acquired Impaired Loans | Pass | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	393,416	398,743
Loans Excluding Acquired Impaired Loans | Pass | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	85,634	73,935
Loans Excluding Acquired Impaired Loans | Pass | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	465,449	415,163
Loans Excluding Acquired Impaired Loans | Pass | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,648	3,732
Loans Excluding Acquired Impaired Loans | Pass | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	178,759	174,672
Loans Excluding Acquired Impaired Loans | Watch
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	183,893	176,996
Loans Excluding Acquired Impaired Loans | Watch | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	65,816	58,217
Loans Excluding Acquired Impaired Loans | Watch | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	29,875	29,165
Loans Excluding Acquired Impaired Loans | Watch | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	23,127	22,380
Loans Excluding Acquired Impaired Loans | Watch | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	64,914	67,024
Loans Excluding Acquired Impaired Loans | Watch | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2	20
Loans Excluding Acquired Impaired Loans | Watch | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	159	190
Loans Excluding Acquired Impaired Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	29,772	34,892
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	10,665	14,645
Loans Excluding Acquired Impaired Loans | Special Mention | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,573	2,251
Loans Excluding Acquired Impaired Loans | Special Mention | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,153	3,168
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	12,272	13,535
Loans Excluding Acquired Impaired Loans | Special Mention | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	17
Loans Excluding Acquired Impaired Loans | Special Mention | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,092	1,293
Loans Excluding Acquired Impaired Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	34,875	33,331
Loans Excluding Acquired Impaired Loans | Substandard | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	13,223	14,053
Loans Excluding Acquired Impaired Loans | Substandard | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,437	2,497
Loans Excluding Acquired Impaired Loans | Substandard | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	18,039	15,508
Loans Excluding Acquired Impaired Loans | Substandard | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	14	14
Loans Excluding Acquired Impaired Loans | Substandard | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,162	1,259
Loans Excluding Acquired Impaired Loans | Doubtful
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	289	272
Loans Excluding Acquired Impaired Loans | Doubtful | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 289	$ 272

XML

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Contractual Delinquency Information (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	$ 2,280,418	$ 2,277,492	$ 2,143,534
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	840,869	891,693	822,850
Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	568,159	577,218	601,407
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	117,070	105,429	105,315
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	568,729	521,238	448,467
Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	4,130	4,228	2,820
Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	181,461	177,686	$ 162,675
Acquired Non-Impaired and Originated Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	46,415	30,950
Non-accrual	23,626	15,764
Current	1,922,529	1,918,852
Total loans and leases	1,968,944	1,949,802
Acquired Non-Impaired and Originated Loans | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	20,708	12,613
Acquired Non-Impaired and Originated Loans | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,081	2,573
Acquired Non-Impaired and Originated Loans | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	17,460	14,210
Non-accrual	8,194	8,459
Current	665,453	710,771
Total loans and leases	682,913	724,981
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	9,266	4,783
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		968
Acquired Non-Impaired and Originated Loans | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,927	2,240
Non-accrual	1,848	2,092
Current	426,374	430,416
Total loans and leases	428,301	432,656
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	79	148
Acquired Non-Impaired and Originated Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Current	111,914	99,483
Total loans and leases	111,914	99,483
Acquired Non-Impaired and Originated Loans | Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	24,684	11,982
Non-accrual	12,916	4,348
Current	535,990	499,248
Total loans and leases	560,674	511,230
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	10,064	6,667
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	1,704	967
Acquired Non-Impaired and Originated Loans | Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	31	32
Non-accrual	14	14
Current	3,650	3,734
Total loans and leases	3,681	3,766
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	17	18
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,313	2,486
Non-accrual	654	851
Current	179,148	175,200
Total loans and leases	181,461	177,686
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	1,282	997
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	$ 377	$ 638

XML

Servicing Assets - Activity for Servicing Assets and Related Changes in Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Transfers And Servicing [Abstract]
Beginning balance	$ 21,400	$ 21,091
Additions, net	2,102	1,422
Changes in fair value	(1,887)	(1,290)
Ending balance	$ 21,615	$ 21,223

XML

Servicing Assets - Unpaid Principal Balances of Loans Serviced for Others (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 1,159,919	$ 1,112,901
SBA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	1,066,269	1,021,143
USDA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 93,650	$ 91,758

XML

Servicing Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Transfers And Servicing [Abstract]
Servicing fees	$ 563,000	$ 919,000

XML

Other Real Estate Owned - Change in Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Banking And Thrift [Abstract]
Other real estate owned, beginning balance	$ 10,626	$ 16,570
Net additions to OREO	1,044	808
Dispositions of OREO	(1,123)	(3,929)
Valuation adjustments	(81)	(276)
Other real estate owned, ending balance	$ 10,466	$ 13,173

XML

Other Real Estate Owned - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Real Estate [Line Items]
Foreclosed real estate properties recorded as result of obtaining physical possession of property	$ 10,466	$ 10,626	$ 13,173	$ 16,570
Residential consumer mortgage loans in process of foreclosure	2,400	1,900
Residential Real Estate
Real Estate [Line Items]
Foreclosed real estate properties recorded as result of obtaining physical possession of property	$ 2,900	$ 3,600

XML

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
	Mar. 31, 2018	Mar. 31, 2017
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance, Goodwill	$ 54,562	$ 51,975
Ending balance, Goodwill	54,562	51,975
Amortization or accretion	(767)	(769)
Core Deposits
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance	16,720	19,776
Amortization or accretion	(761)	(765)
Ending balance	15,959	19,011
Accumulated amortization or accretion	$ 14,227	$ 11,175
Weighted average remaining amortization or accretion period	5 years 4 months 24 days	6 years 4 months 24 days

XML

Goodwill, Core Deposit Intangible and Other Intangible Assets - Additional Information (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 15,991,000	$ 16,756,000
Trademark
Indefinite Lived Intangible Assets By Major Class [Line Items]
Other intangible assets, net	$ 32,000	$ 36,000

XML

Goodwill, Core Deposit Intangible and Other Intangible Assets - Estimated Amortization Expense for Core Deposit Intangible and Other Intangible Assets Recognized (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2018	$ 2,295
2019	3,050
2020	3,027
2021	3,017
2022	3,010
Thereafter	1,592
Total	$ 15,991

XML

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	16.30%	40.90%
Corporate federal income tax rate	21.00%		35.00%
Net income tax benefit	$ 724,000
Deferred tax assets, net	$ 47,400		$ 47,400

XML

Deposits - Schedule of Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deposits [Abstract]
Non-interest bearing demand deposits	$ 749,892	$ 760,887
Interest bearing checking accounts	196,802	186,611
Money market demand accounts	382,282	349,862
Other savings	439,277	437,212
Time deposits (below $250,000)	665,541	627,255
Time deposits ($250,000 and above)	90,753	81,502
Total deposits	$ 2,524,547	$ 2,443,329

XML

Deposits - Additional Information (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Deposits [Abstract]
Brokered deposits	$ 0	$ 0

XML

Federal Home Loan Bank Advances - Summary of FHLB Advances (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank advances	$ 380,000	$ 361,506
Weighted average cost	1.88%	1.49%

XML

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank, total fixed-rate advances	$ 250,000,000
Federal home loan bank advances, Fixed interest rate	2.02%
Federal home loan bank fixed rate advances, maturity date	2018-06
Federal home loan bank, total floating rate advances	$ 130,000,000
Federal home loan bank advances, Floating interest rate	1.62%
Federal home loan bank, required investment conversion ratio	0.05
Additional borrowing capacity from FHLB	$ 797,500,000	$ 795,000,000
Federal home loan bank advances maximum borrowing capacity as percentage of total assets	35.00%
Minimum
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank floating rate advances, maturity date	2018-04
Maximum
Federal Home Loan Bank Advances [Line Items]
Federal home loan bank floating rate advances, maturity date	2018-05

XML

Other Borrowings - Summary of Other Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Securities sold under agreements to repurchase	$ 27,815	$ 31,187
Total	$ 27,815	$ 31,187

XML

Other Borrowings - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended
	Oct. 12, 2017	Jul. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Apr. 30, 2017	Dec. 31, 2016	Oct. 13, 2016
Line Of Credit Facility [Line Items]
Repayment of lines of credit		$ 16,200,000		$ 2,500,000
Short-term credit lines available for use, outstanding			$ 0				$ 0
Ridgestone | Correspondent Bank | Credit agreement
Line Of Credit Facility [Line Items]
Line of credit facility, amount								$ 30,000,000
Line of credit facility, interest rate			3.75%		3.75%
Line of credit facility, maturity date			Oct. 12, 2017
Ridgestone | Correspondent Bank | Amended Credit Agreement
Line Of Credit Facility [Line Items]
Line of credit facility, amount			$ 0		$ 0
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
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 London Interbank Offered Rate (“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 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. At March 31, 2018 and December 31, 2017, the line of credit has not been drawn upon, so an interest rate option has not been selected.
Ridgestone | Correspondent Bank | Amended Credit Agreement | LIBOR Rate
Line Of Credit Facility [Line Items]
Interest rate spread	2.50%
Ridgestone | Correspondent Bank | Amended Credit Agreement | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate spread	0.25%

XML

Other Borrowings - Summary of Short-term Credit Lines Available for Use (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Federal Reserve Bank of Chicago Discount Window Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 156,077	$ 144,248
Available Federal Funds Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 55,000	$ 55,000

XML

Junior Subordinated Debentures - Junior Subordinated Debentures by Issuance (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	$ 36,500	$ 36,500
Total liability, at carrying value	27,800	27,647
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	$ (8,700)	$ (8,853)
Junior Subordinated Debentures | Metropolitan Statutory Trust 1
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Stated Maturity	Mar. 17, 2034
Contractual Rate	4.97%	4.39%
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%	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%	3.50%

XML

Junior Subordinated Debentures - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Principal amount	$ 36,500,000	$ 36,500,000
Accrued interest payable	1,612,000	1,306,000
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	4.97%	4.39%
Accrued interest payable	$ 65,000	$ 62,000
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures | Three-month LIBOR
Debt Instrument [Line Items]
Interest rate spread	2.79%	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%	3.50%

XML

Commitments and Contingent Liabilities - Summary of Minimum Annual Rental Commitments for Operating Leases (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2018	$ 2,307
2019	2,600
2020	2,089
2021	1,809
2022	972
Thereafter	2,073
Total	$ 11,850

XML

Commitments and Contingent Liabilities - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Commitments And Contingencies Liabilities [Line Items]
Rental expenses	$ 1,200,000	$ 1,100,000
Sublease income	170,000	$ 190,000
Minimum rental to be received in future on subleases	$ 1,800,000
Sublease contract maturity year	2025
Fixed rate loan commitments maturity year	2024
Variable rate loan commitments maturity year	2040
Maximum
Commitments And Contingencies Liabilities [Line Items]
Commitments to make loans period	90 days
Loan commitments fixed interest rate	19.50%
Loan commitments variable interest rate	11.75%
Minimum
Commitments And Contingencies Liabilities [Line Items]
Loan commitments fixed interest rate	1.00%
Loan commitments variable interest rate	2.45%

XML

Commitments and Contingent Liabilities - Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	$ 60,644	$ 57,150
Variable Rate	514,360	470,766
Commitments to Extend Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	58,074	55,924
Variable Rate	510,822	467,429
Standby Letters of Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	2,570	1,226
Variable Rate	$ 3,538	$ 3,337

XML

Fair Value Measurement - Summary of Financial Assets And Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	$ 626,057	$ 583,236
Servicing assets, at fair value	21,615	21,400	$ 21,223	$ 21,091
Derivative assets	10,500	5,981
Derivative liabilities	1,432	994
U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	22,741	14,863
U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	62,621	52,958
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	32,148	33,170
Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	35,363	29,976
Other Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value	5,389	5,284
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	21,615	21,400
Derivative assets	10,500	5,981
Derivative liabilities	1,432	994
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	22,741	14,863
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	62,621	52,958
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	32,148	33,170
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	309,050	307,457
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	54,274	39,514
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	74,127	69,043
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	30,344	30,971
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	35,363	29,976
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	5,389	5,284
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	22,741	14,863
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	1,880	1,921
Fair Value, Measurements, Recurring | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	10,500	5,981
Derivative liabilities	1,430	994
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	62,621	52,958
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	31,773	32,795
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	309,050	307,457
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	54,274	39,514
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	74,127	69,043
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	30,344	30,971
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	35,363	29,976
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	2,817	2,686
Fair Value, Measurements, Recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	21,615	21,400
Derivative liabilities	2
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	375	375
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	$ 692	$ 677

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Fair Value Measurement - Additional Information (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Abstract]
Fair value, assets, level 1 to level 2 transfers, amount	$ 0	$ 0
Fair value, assets, level 2 to level 1 transfers, amount	0	0
Fair value, liabilities, level 1 to level 2 transfers, amount	0	0
Fair value, liabilities, level 2 to level 1 transfers, amount	0	0
Fair value, equity, level 1 to level 2 transfers, amount	0	0
Fair value, equity, level 2 to level 1 transfers, amount	$ 0	$ 0

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Fair Value Measurement - Summary of Financial Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investment Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	$ 1,052	$ 1,080
Amortization	1	1
Change in unrealized loss	14
Balance, end of period	1,067	1,081
Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	21,400	21,091
Additions, net	2,102	1,422
Change in fair value	(1,887)	(1,290)
Balance, end of period	$ 21,615	$ 21,223

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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	3 Months Ended
	Mar. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
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	10.40%
Expected weighted average loan life	9 months 18 days
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate	20.60%
Expected weighted average loan life	7 years 10 months 24 days
Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate	14.20%
Expected weighted average loan life	5 years 6 months
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
Obligations of States, Municipalities, and Political Subdivisions | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.20%
Obligations of States, Municipalities, and Political Subdivisions | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.40%
Obligations of States, Municipalities, and Political Subdivisions | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	2.30%
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
Single Issuer Trust Preferred | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	7.50%
Single Issuer Trust Preferred | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	9.90%
Single Issuer Trust Preferred | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Probability of default	8.90%
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
Servicing Assets | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speeds	5.60%
Servicing Assets | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speeds	16.30%
Servicing Assets | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Prepayment speeds	9.30%

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Fair Value Measurement - Summary of Assets Measured at Fair Value on Non-recurring Basis, Excluding Acquired Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 10,803	$ 12,783
Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,876	2,271
Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	9,635	12,092
Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	10,466	10,626
Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	9,030	9,779
Level 3 | Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	10,803	12,783
Level 3 | Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,876	2,271
Level 3 | Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	9,635	12,092
Level 3 | Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	10,466	10,626
Level 3 | Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 9,030	$ 9,779

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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	3 Months Ended
	Mar. 31, 2018
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%

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Fair Value Measurement - Summary of Estimated Fair Values of Financial Instruments and Levels Within Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets
Cash and due from banks	$ 17,396	$ 19,404
Interest bearing deposits with other banks	110,645	38,945
Securities held-to-maturity, fair value	110,419	117,277
Restricted stock, at cost	17,177	16,343
Loans held for sale	8,219	5,212
Loans and lease receivables, net	2,262,778	2,260,786
Accrued interest receivable	6,971	7,670
Financial liabilities
Federal Home Loan Bank advances	380,000	361,506
Securities sold under agreements to repurchase	27,815	31,187
Junior subordinated debentures issued to capital trusts, net	27,800	27,647
Level 1 | Carrying Amount
Financial assets
Cash and due from banks	17,396	19,404
Level 1 | Estimated Fair Value
Financial assets
Cash and due from banks	17,396	19,404
Level 2 | Carrying Amount
Financial assets
Interest bearing deposits with other banks	110,645	38,945
Securities held-to-maturity, fair value	112,266	117,163
Restricted stock, at cost	17,177	16,343
Financial liabilities
Non-interest bearing deposits	749,892	760,887
Interest bearing deposits	1,774,655	1,682,442
Accrued interest payable	1,612	1,306
Federal Home Loan Bank advances	380,000	361,506
Securities sold under agreements to repurchase	27,815	31,187
Level 2 | Estimated Fair Value
Financial assets
Interest bearing deposits with other banks	110,645	38,945
Securities held-to-maturity, fair value	110,419	117,277
Restricted stock, at cost	17,177	16,343
Financial liabilities
Non-interest bearing deposits	749,892	760,887
Interest bearing deposits	1,769,476	1,678,535
Accrued interest payable	1,612	1,306
Federal Home Loan Bank advances	380,000	361,500
Securities sold under agreements to repurchase	27,815	31,187
Level 3 | Carrying Amount
Financial assets
Loans held for sale	8,219	5,212
Loans and lease receivables, net	2,262,778	2,260,786
Accrued interest receivable	6,971	7,670
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	27,800	27,647
Level 3 | Estimated Fair Value
Financial assets
Loans held for sale	9,122	5,851
Loans and lease receivables, net	2,230,050	2,240,235
Accrued interest receivable	6,971	7,670
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	$ 34,025	$ 33,907

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Derivative Instruments and Hedge Activities - Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivatives Fair Value [Line Items]
Notional Amount	$ 345,373,000	$ 344,726,000
Other Assets	10,500,000	5,981,000
Other Liabilities	1,432,000	994,000
Other Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	94,123,000
Other Assets	1,453,000
Other Liabilities	1,430,000
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedges
Derivatives Fair Value [Line Items]
Notional Amount	250,000,000	250,000,000
Other Assets	9,047,000	5,030,000
Other Liabilities		38,000
Derivatives Not Designated As Hedging Instruments | Other Credit Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	1,250,000
Other Liabilities	2,000
Derivatives Not Designated As Hedging Instruments | Other Interest Rate Swaps
Derivatives Fair Value [Line Items]
Notional Amount	94,123,000	94,726,000
Other Assets	1,453,000	951,000
Other Liabilities	$ 1,430,000	$ 956,000

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Derivative Instruments and Hedge Activities - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Derivative notional amount	$ 345,373,000		$ 344,726,000
Unrealized gain (loss) to be reclassified as an increase to interest expense during the next twelve months	1,800,000
Credit valuation adjustment increase (decrease) to non-interest income	27,000	$ (13,000)
Full collateral posted	11,500
Interest Rate Swaps | Interest Expense
Derivative [Line Items]
Increase (decrease) in FHLB expense	(61,000)	54,000
Other Interest Rate Swaps
Derivative [Line Items]
Derivative notional amount	$ 94,123,000
Derivative maturity date, start year	Jan. 31, 2020
Derivative maturity date, end year	Nov. 30, 2027
Derivative instruments transaction fees	$ 0	$ 113,000
Other Credit Derivative
Derivative [Line Items]
Derivative notional amount	$ 1,300,000
Derivative maturity date	Jan. 31, 2025
Credit valuation adjustment increase (decrease) to non-interest income	$ 23,000
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedges
Derivative [Line Items]
Derivative notional amount	250,000,000		250,000,000
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

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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 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Amount of Gain Recognized in OCI (Effective Portion)	$ 4,070	$ (83)
Amount of Gain Reclassified from OCI to Income as a Decrease to Interest Expense	$ 61
Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense		$ (54)

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Derivative Instruments and Hedge Activities - Summary of Other Interest Rate Swaps (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional Amount	$ 345,373,000	$ 344,726,000
Derivative assets fair value	10,500,000	5,981,000
Derivative liabilities fair value	1,432,000	$ 994,000
Other Interest Rate Swaps
Derivative [Line Items]
Notional Amount	94,123,000
Derivative assets fair value	1,453,000
Derivative liabilities fair value	$ 1,430,000
Weighted average pay rates	4.38%
Weighted average receive rates	4.02%
Weighted average maturity	6 years

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Derivative Instruments and Hedge Activities - Summary of Company's Interest Rate Derivative and Offsetting Positions (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Gross amounts recognized	$ 10,500	$ 5,981
Net amount presented in the Consolidated Statements of Financial Condition	10,500	5,981
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions		(232)
Collateral posted	(10,500)	(5,371)
Net credit exposure (excess collateral)		378
Gross amounts recognized	1,432	994
Net amount presented in the Consolidated Statements of Financial Condition	1,432	994
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions		(232)
Collateral posted	(1,424)	(745)
Net credit exposure (excess collateral)	$ 8	$ 17

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Share-Based Compensation - Additional Information (Details) - USD ($)			1 Months Ended		3 Months Ended		12 Months Ended
	Oct. 03, 2017	Jul. 06, 2017	Apr. 30, 2018	Oct. 31, 2014	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 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
Proceeds from the exercise of stock options					$ 1,005,000
Income tax benefit					64,000	$ 113,000
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Income tax benefit					$ 381,000
Performance Options Grants
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]
Number of options exercised					86,750
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
Number of common shares available for future grants					1,479,602
Omnibus Plan | Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Forfeiture of restricted stock awards, shares		400
Award vesting period							4 years
Restricted shares vested					0
Fair value of unvested restricted stock awards					$ 1,600,000
Omnibus Plan | Performance-based Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of restricted voting common stock granted			11,165
Period for number of shares earned under retun on average assets			3 years
Minimum target precentage in assets of peer group consisting publicly-traded bank holding companies			50.00%
Maximum target precentage in assets of peer group consisting publicly-traded bank holding companies			200.00%
Omnibus Plan | Performance-based Restricted Shares | Threshold performance
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of target number of shares to be earned			25.00%
Omnibus Plan | Performance-based Restricted Shares | 50th Percentile Performance
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of target number of shares to be earned			100.00%
Omnibus Plan | Performance-based Restricted Shares | 75th Percentile Performance
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of target number of shares to be earned			125.00%
Omnibus Plan | 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					11,898
Omnibus Plan | Common Stock | Restricted Shares | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of restricted voting common stock granted			48,943
Common stock, voting par value			$ 0.01
Omnibus Plan | Common Stock | Restricted Shares | Each Anniversary of Grant Date Over Four Years | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			4 years
Shares vest on grant date			24,345
Omnibus Plan | Common Stock | Restricted Shares | Each Anniversary of Grant Date Vest Over Three Years | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			3 years
Shares vest on grant date			11,165
Omnibus Plan | Common Stock | Restricted Shares | First Anniversary of Grant Date | Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares vest on grant date			2,268
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		0	212,400	1,634,568
Number of options exercised					86,750		0
Number of shares outstanding					1,696,270		1,783,020
Award contractual term					7 years 4 months 24 days		7 years 7 months 6 days
Options vested					0
Proceeds from the exercise of stock options					$ 1,000,000
Income tax benefit					$ 264,000
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

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Share-Based Compensation - Summary of Changes in Restricted Shares (Details) - Omnibus Plan - Restricted Shares	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, beginning balance	70,398,000
Number of shares, vested	0
Number of shares, ending balance	70,398,000
Weighted average grant date fair value, beginning balance | $ / shares	$ 20.31
Weighted average grant date fair value, ending balance | $ / shares	$ 20.31

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Share-Based Compensation - Summary of Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 229	$ 286
Income tax benefit	64	113
Unrecognized compensation expense	$ 499	$ 1,466
Weighted-average amortization period remaining	1 year 1 month 6 days	1 year 9 months 18 days
Restricted Shares
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 112
Income tax benefit	381
Unrecognized compensation expense	$ 1,114
Weighted-average amortization period remaining	2 years 7 months 6 days

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Share-Based Compensation - Fair Value Assumptions of Stock Options (Details) - BYB Plan - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2016	Mar. 31, 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 18 days
Performance Options Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	Implied forward rates		Implied forward rates
Expected term (years)	Variable		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

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Share-Based Compensation - Summary Activity in shares Subjected to Options and Weighted Average Exercise Prices (Details) - BYB Plan - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning balance	1,783,020
Number of Shares, Granted	0	0	212,400	1,634,568
Number of Shares, Exercised	(86,750)	0
Number of Shares, Ending balance	1,696,270	1,783,020
Number of Shares, Exercisable	1,217,507
Weighted Average Exercise Price, Beginning balance	$ 11.91
Weighted Average Exercise Price, Exercised	11.59
Weighted Average Exercise Price, Ending balance	11.93	$ 11.91
Weighted Average Exercise Price, Exercisable	$ 11.50
Intrinsic Value, Beginning balance	$ 19,718
Intrinsic Value, Exercised	949
Intrinsic Value, Ending balance	18,663	$ 19,718
Intrinsic Value, Exercisable	$ 13,917
Weighted Average Remaining Contractual Term (in Years)	7 years 4 months 24 days	7 years 7 months 6 days
Weighted Average Remaining Contractual Term (in Years), Exercisable	7 years 3 months 18 days

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Earnings per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share Basic [Line Items]
Shares outstanding	29,291,179	24,616,706
Stock Options
Earnings Per Share Basic [Line Items]
Shares outstanding	1,696,270	1,798,320
Restricted Stock Award
Earnings Per Share Basic [Line Items]
Shares outstanding	70,798	0

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Earnings per Share - Schedule of Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 6,768	$ 6,560
Dividends on preferred shares	193	189
Net income available to common stockholders	$ 6,575	$ 6,371
Weighted-average common stock outstanding:
Weighted-average common stock outstanding (basic)	29,291,179	24,616,706
Incremental shares	622,454	461,721
Weighted-average common stock outstanding (dilutive)	29,913,633	25,078,427
Basic earnings per common share	$ 0.22	$ 0.26
Diluted earnings per common share	$ 0.22	$ 0.25

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Stockholders' Equity - Summary of Preferred and Common Stock (Details) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
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	29,404,048	29,317,298
Common stock, voting shares outstanding	29,404,048	29,317,298
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	10,438
Shares outstanding	10,438	10,438

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Stockholders' Equity - Summary of Preferred and Common Stock (Parenthetical) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Series B 7.5% Fixed Non-Cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	7.50%	7.50%

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Stockholders' Equity - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Dividends declared and paid	$ 193,000	$ 189,000
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage			7.50%
Preferred stock, liquidation preference per share			$ 1,000
Dividends declared and paid	$ 193,000	$ 189,000

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Consolidated Statements of Change in Accumulated Other Comprehensive Income (Loss) - Schedule of Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 458,578	$ 382,658
Reclassification of certain income tax effects from accumulated other comprehensive income	(763)
Other comprehensive income (loss), net of tax	(3,564)	368
Ending balance	462,936	389,683
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	2,913	2,233
Reclassification of certain income tax effects from accumulated other comprehensive income	687
Other comprehensive income (loss), net of tax	2,893	(18)
Ending balance	6,493	2,215
Unrealized Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(8,000)	(9,501)
Reclassification of certain income tax effects from accumulated other comprehensive income	(1,450)
Other comprehensive income (loss), net of tax	(6,457)	386
Ending balance	(15,907)	(9,115)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(5,087)	(7,268)
Reclassification of certain income tax effects from accumulated other comprehensive income	(763)
Other comprehensive income (loss), net of tax	(3,564)	368
Ending balance	$ (9,414)	$ (6,900)