State Bank Financial (STBZ) Inactive 10-Q3 Aug 182018 Q2 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Aug. 02, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	STATE BANK FINANCIAL CORP
Entity Central Index Key	1,497,275
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (shares)		39,094,511
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	[1]
Assets
Cash and amounts due from depository institutions	$ 12,974	$ 17,438
Interest-bearing deposits in other financial institutions	215,360	211,142
Federal funds sold	9,957	2,297
Cash and cash equivalents	238,291	230,877
Equity securities	1,515	1,515
Debt securities available-for-sale	835,670	872,455
Debt securities held-to-maturity (fair value of $16,817 and $33,351, respectively)	16,742	32,852
Loans	3,605,273	3,532,193
Allowance for loan and lease losses	(33,335)	(28,750)
Loans, net	3,571,938	3,503,443
Loans held-for-sale (includes loans at fair value of $39,222 and $25,791, respectively)	55,096	36,211
Other real estate owned	5,012	895
Premises and equipment, net	56,965	51,794
Goodwill	84,564	84,564
Other intangibles, net	9,729	11,034
SBA servicing rights	3,989	4,069
Bank-owned life insurance	68,231	67,313
Other assets	64,587	61,560
Total assets	5,012,329	4,958,582
Liabilities:
Noninterest-bearing deposits	1,187,028	1,191,106
Interest-bearing deposits	3,115,676	3,052,029
Total deposits	4,302,704	4,243,135
Federal funds purchased and securities sold under agreements to repurchase	13,525	25,209
Notes payable	398	398
Other liabilities	38,783	48,289
Total liabilities	4,355,410	4,317,031
Shareholders' equity:
Preferred stock, $1 par value; 2,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.01 par value; 100,000,000 shares authorized; 39,121,749 and 38,992,163 shares issued and outstanding, respectively	391	390
Additional paid-in capital	415,698	413,583
Retained earnings	250,628	230,145
Accumulated other comprehensive loss, net of tax	(9,798)	(2,567)
Total shareholders' equity	656,919	641,551
Total liabilities and shareholders' equity	$ 5,012,329	$ 4,958,582

[1]	Derived from audited financial statements

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Debt securities held-to-maturity - fair value	$ 16,817	$ 33,351
Loans held-for-sale at fair value	$ 39,222	$ 25,791
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	39,121,749	38,992,163
Common stock, shares outstanding (in shares)	39,121,749	38,992,163

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans	$ 50,416	$ 34,872	$ 98,860	$ 68,932
Loan accretion	6,595	9,228	12,541	16,905
Investment securities	6,275	5,655	12,261	11,023
Deposits with other financial institutions	402	92	587	184
Total interest income	63,688	49,847	124,249	97,044
Interest expense:
Deposits	7,338	3,123	12,766	6,231
FHLB borrowings	206	229	463	341
Notes payable	11	9	24	20
Federal funds purchased and repurchase agreements	3	8	10	16
Total interest expense	7,558	3,369	13,263	6,608
Net interest income	56,130	46,478	110,986	90,436
Provision for loan and lease losses	2,393	1,845	5,601	2,847
Net interest income after provision for loan and lease losses	53,737	44,633	105,385	87,589
Noninterest income:
Service charges on deposits	1,462	1,471	3,087	2,938
Mortgage banking income	3,125	3,096	6,050	5,990
SBA income	1,252	1,983	2,444	3,161
Payroll and insurance income	1,608	1,418	3,368	2,913
ATM income	919	864	1,789	1,696
Bank-owned life insurance income	463	465	918	949
Gain on sale of investment securities	250	13	250	25
Other	1,838	1,166	3,472	2,263
Total noninterest income	10,917	10,476	21,378	19,935
Noninterest expense:
Salaries and employee benefits	24,279	21,178	50,321	42,566
Occupancy and equipment	3,421	3,329	6,917	6,609
Data processing	2,696	2,382	5,592	5,021
Legal and professional fees	967	898	1,706	2,703
Merger-related expenses	2,601	372	3,865	2,607
Marketing	940	403	1,365	1,067
Federal deposit insurance premiums and other regulatory fees	589	398	1,089	795
Loan collection costs and OREO activity	(116)	(213)	50	(1,255)
Amortization of intangibles	654	697	1,305	1,393
Other	3,952	2,553	7,041	5,056
Total noninterest expense	39,983	31,997	79,251	66,562
Income before income taxes	24,671	23,112	47,512	40,962
Income tax expense	5,904	7,909	11,380	14,201
Net income	$ 18,767	$ 15,203	$ 36,132	$ 26,761
Basic earnings per share (usd per share)	$ 0.48	$ 0.39	$ 0.93	$ 0.69
Diluted earnings per share (usd per share)	0.48	0.39	0.92	0.69
Cash dividends declared per common share (usd per share)	$ 0.2000	$ 0.14000	$ 0.4	$ 0.28
Weighted Average Shares Outstanding:
Basic (in shares)	38,038,181	37,896,125	38,035,111	37,881,999
Diluted (shares)	38,075,106	37,942,483	38,072,919	37,934,187

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 18,767	$ 15,203	$ 36,132	$ 26,761
Other comprehensive income (loss), net of tax:
Net change in unrealized (losses) gains	(2,184)	1,110	(9,064)	594
Amortization of net unrealized (gains) losses on securities transferred to held-to-maturity	(3)	46	23	44
Transfer of unrealized gain from held-to-maturity to available-for-sale	(51)	0	(51)	0
Amounts reclassified for (gains) losses realized and included in earnings	(250)	417	(159)	809
Other comprehensive (loss) income, before income taxes	(2,488)	1,573	(9,251)	1,447
Income tax expense	(616)	585	(1,997)	549
Other comprehensive income (loss), net of income taxes	(1,872)	988	(7,254)	898
Comprehensive income	$ 16,895	$ 16,191	$ 28,878	$ 27,659

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total		Warrants	Common Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance warrants (in shares) at Dec. 31, 2016			133,912
Balance (in shares) at Dec. 31, 2016				38,845,573
Balance, beginning of period at Dec. 31, 2016	$ 613,633			$ 388	$ 409,736	$ 205,966	$ (2,457)
Increase (decrease) in shareholders' equity
Exercise of stock warrants (in shares)			(46,000)	(31,939)
Exercise of stock warrants	1			$ 1
Share-based compensation	1,817				1,817
Restricted stock activity (in shares)				77,974
Restricted stock activity	(210)			$ 1	(128)	(83)
Issuance of common stock (in shares)				12,486
Issuance of common stock	335			$ 0	335
Other comprehensive income (loss)	898						898
Common stock dividends	(10,898)					(10,898)
Net income	26,761					26,761
Balance warrants (in shares) at Jun. 30, 2017			87,912
Balance (in shares) at Jun. 30, 2017				38,967,972
Balance, end of period at Jun. 30, 2017	632,337			$ 390	411,760	221,746	(1,559)
Balance, beginning of period at Mar. 31, 2017							(2,547)
Increase (decrease) in shareholders' equity
Net income	15,203
Balance warrants (in shares) at Jun. 30, 2017			87,912
Balance (in shares) at Jun. 30, 2017				38,967,972
Balance, end of period at Jun. 30, 2017	632,337			$ 390	411,760	221,746	(1,559)
Increase (decrease) in shareholders' equity
Adoption of ASU 2016-01	$ 23					(23)	23
Balance warrants (in shares) at Dec. 31, 2017			82,904
Balance (in shares) at Dec. 31, 2017	38,992,163			38,992,163
Balance, beginning of period at Dec. 31, 2017	$ 641,551	[1]		$ 390	413,583	230,145	(2,567)
Increase (decrease) in shareholders' equity
Exercise of stock warrants (in shares)			(30,000)	(20,215)
Exercise of stock warrants	0			$ 0
Share-based compensation	2,116				2,116
Restricted stock activity (in shares)				109,371
Restricted stock activity	0			$ 1	(1)	0
Other comprehensive income (loss)	(7,254)						(7,254)
Common stock dividends	(15,626)					(15,626)
Net income	$ 36,132					36,132
Balance warrants (in shares) at Jun. 30, 2018			52,904
Balance (in shares) at Jun. 30, 2018	39,121,749			39,121,749
Balance, end of period at Jun. 30, 2018	$ 656,919			$ 391	415,698	250,628	(9,798)
Balance, beginning of period at Mar. 31, 2018							(7,926)
Increase (decrease) in shareholders' equity
Net income	$ 18,767
Balance warrants (in shares) at Jun. 30, 2018			52,904
Balance (in shares) at Jun. 30, 2018	39,121,749			39,121,749
Balance, end of period at Jun. 30, 2018	$ 656,919			$ 391	$ 415,698	$ 250,628	$ (9,798)

[1]	Derived from audited financial statements

CONSOLIDATED STATEMENTS OF CHA7

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Dividends per share (usd per share)	$ 0.4	$ 0.28

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018		Jun. 30, 2017
Cash Flows from Operating Activities
Net income	$ 36,132		$ 26,761
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	4,721		5,838
Provision for loan and lease losses	5,601		2,847
Accretion on acquisitions, net	(12,541)		(16,905)
Gains on sales of other real estate owned	(604)		(1,693)
Writedowns of other real estate owned	128		121
Proceeds from sales of mortgage loans held-for-sale	234,304		248,964
Proceeds from sales of SBA loans held-for-sale	20,261		27,463
Originations of mortgage loans held-for-sale	(242,295)		(237,579)
Originations of SBA loans held-for-sale	(23,834)		(26,097)
Mortgage banking activities	(6,050)		(5,990)
Gains on sales of SBA loans	(1,882)		(2,483)
Net gains on sales of available-for-sale securities	(250)		(25)
Share-based compensation expense	2,116		1,817
Changes in fair value of SBA servicing rights	493		246
Changes in other assets and other liabilities, net	(9,354)		(593)
Net cash provided by operating activities	6,946		22,692
Cash flows from Investing Activities
Purchase of investment securities available-for-sale	(57,201)		(161,915)
Proceeds from sales and calls of investment securities available-for-sale	4,275		64,778
Proceeds from maturities and paydowns of investment securities available-for-sale	88,805		95,192
Proceeds from maturities and paydowns of investment securities held-to-maturity	6,010		9,000
Purchase of investment securities held-to-maturity	0		(5,000)
Loan originations, repayments and resolutions, net	(66,319)		(51,705)
Net purchases of premises and equipment	(7,043)		(926)
Proceeds from sales of other real estate owned	1,123		10,787
Net cash paid in excess of assets and liabilities acquired in purchase business combinations	0		(34,316)
Net cash used in investing activities	(30,350)		(74,105)
Cash Flows from Financing Activities
Net (decrease) increase in noninterest-bearing customer deposits	(4,078)		25,090
Net increase (decrease) in interest-bearing customer deposits	63,647		(3,563)
Proceeds from FHLB advances	694,500		840,000
Repayments of FHLB advances	(694,500)		(807,014)
Net decrease in federal funds purchased and securities sold under repurchase agreements	(11,684)		(2,417)
Payment of contingent consideration	(1,441)		(1,495)
Exercise of stock warrants	0		1
Restricted stock activity	0		(210)
Dividends paid to shareholders	(15,626)		(10,898)
Net cash provided by financing activities	30,818		39,494
Net increase (decrease) in cash and cash equivalents	7,414		(11,919)
Cash and cash equivalents, beginning	230,877	[1]	149,593
Cash and cash equivalents, ending	238,291		137,674
Supplemental Disclosure of Noncash Investing and Financing Activities
Unrealized (losses) gains on securities and cash flow hedges, net of tax	(7,254)		898
Transfer of debt securities held-to-maturity to available-for-sale	10,066		0
Transfers of loans to other real estate owned	$ 4,764		$ 725

[1]	Derived from audited financial statements

Basis of Presentation

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	NOTE 1: BASIS OF PRESENTATION Overview State Bank Financial Corporation (the "Company" or "we") is a bank holding company whose business is primarily conducted through its wholly-owned banking subsidiary, State Bank and Trust Company (the "Bank" or "State Bank"). We operate a full service banking business and offer a broad range of commercial and retail banking products to our customers throughout seven of Georgia's eight largest metropolitan statistical areas, or MSAs. The accompanying unaudited consolidated financial statements for the Company have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information. Accordingly, the financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statement presentation. The interim consolidated financial statements included herein are unaudited, but reflect all adjustments, consisting of normal and recurring items, which, in the opinion of management, are necessary for a fair presentation of the consolidated financial position and results of operations for the interim period presented. All significant intercompany accounts and transactions have been eliminated in consolidation. The results of operations for the period ended June 30, 2018 are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the financial statements and notes thereto and the report of our independent registered public accounting firm included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Certain amounts have been reclassified to conform to the current period presentation. The reclassifications had no effect on net income or shareholders’ equity as previously reported. Proposed Merger with Cadence Bancorporation On May 11, 2018, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Cadence Bancorporation, a Delaware corporation ("Cadence"). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, the Company will merge with and into Cadence, with Cadence continuing as the surviving corporation. Immediately following the completion of the merger, the Bank will merge with and into Cadence’s wholly owned bank subsidiary, Cadence Bank, N.A. (“Cadence Bank”), with Cadence Bank continuing as the surviving bank. Subject to the terms and conditions of the Merger Agreement, if the merger is completed, Company shareholders will receive 1.160 shares of Cadence Class A common stock, par value $0.01 per share, for each share of Company common stock, par value $0.01 per share, they hold immediately prior to the merger, plus cash in lieu of fractional shares. The transaction is expected to close in the fourth quarter of 2018, subject to Company shareholder and regulatory approvals in addition to satisfaction of certain other closing conditions.

Adoption of New Accounting Stan

Adoption of New Accounting Standards and Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Adoption of New Accounting Standards and Recent Accounting Pronouncements	NOTE 2: ADOPTION OF NEW ACCOUNTING STANDARDS AND RECENT ACCOUNTING PRONOUNCEMENTS Adoption of New Accounting Standards ASU 2018-05 — In March 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 . The purpose of this ASU is to codify the SEC's guidance issued in Staff Accounting Bulletin 118. The amendments in this update were effective upon issuance. The adoption did not have a material impact on our consolidated financial statements. ASU 2018-04 — In March 2018, FASB issued ASU 2018-04, Investment - Debt Securities (Topic 320) and Regulated Operations (Topic 980): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 117 and SEC Release No. 33-9273 . The purpose of this ASU is to codify the SEC's guidance issued in Staff Accounting Bulletin 117. The amendments in this update were effective upon issuance. The adoption did not have a material impact on our consolidated financial statements. ASU 2017-12 — On August 28, 2017, FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The purpose of this ASU is to better align a company’s risk management activities and financial reporting for hedging relationships with the economic objectives of those activities, simplify the hedge accounting requirements, and improve the disclosures of hedging arrangements. The ASU is effective for annual reporting periods, including interim periods within those annual reporting periods, beginning after December 15, 2018. Early adoption is permitted, including adoption in any interim period. AS U 2017-12 requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. The Company adopted the amendments in this ASU effective January 1, 2018. The adoption changed the location of changes in fair value of the hedging instrument and hedged item to interest income for periods subsequent to adoption and enhanced disclosures of derivatives and hedging activities. The Company did not elect to modify the measurement methodology for any fair value hedges existing as of the adoption date and there was no cumulative effect adjustment required upon adoption. See Note 8 for enhanced disclosures. ASU 2018-03 — In February 2018, FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10). This Update clarifies certain aspects of the guidance issued in ASU 2016-01 including (i) that an entity measuring an equity security using the measurement alternative may make an irrevocable election to change its measurement approach to a fair value method under Topic 820 for that security and any identical or similar investments of the same issuer, (ii) that fair value adjustments under the measurement alternative should be as of the date the observable transaction for a similar security occurred, (iii) requiring the remeasurement of the entire value of forward contracts and purchased options when observable transactions occur on the underlying equity securities, (iv) that financial liabilities for which the fair value option is elected should follow the guidance in paragraph 825-10-45-5, (v) that changes in the fair value of financial liabilities for which the fair value option is elected relating to the instrument-specific credit risk should first be measured in the currency of denomination and then both components of the change in fair value should be remeasured into the reporting entity's functional currency using end-of-period spot rates, and (vi) that the prospective transition approach should only be applied for instances in which the measurement alternative is applied. The guidance was effective for interim periods beginning after June 15, 2018 and may be early adopted provided ASU 2016-01 was adopted. The Company adopted the amendments in this ASU effective January 1, 2018. The adoption did not have a material impact on our consolidated financial statements. ASU 2016-01 — In January 2016, FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . The amendments in this ASU (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods 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, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income 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, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets. The accounting guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. The Company adopted the amendments in this ASU effective January 1, 2018. The adoption of 2016-01 resulted in a reclassification of unrealized loss of $23,000 from accumulated other comprehensive loss to retained earnings. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) , ASU 2015-14 Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date , ASU 2016-08 Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , ASU 2016-10 Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing , ASU 2016-11 Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting , ASU 2016-12 Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , ASU 2016-20 Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, and ASU 2017-05 Other Income - Gains and losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) - Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets — In May 2014, the FASB issued guidance to change the recognition of revenue from contracts with customers. The new guidance, which does not apply to financial instruments, provides that revenue should be recognized for the transfer of goods or services to customers in an amount equal to the consideration the entity receives or expects to receive in exchange for those goods or services. The guidance also includes expanded disclosure requirements that provide comprehensive information about the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted the amendments in this ASU effective January 1, 2018 using the modified retrospective method. Since there was no change to net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not necessary. See below for additional information related to revenue generated from contracts with customers. Revenue Recognition On January 1, 2018 the Company adopted ASC Topic 606, using the modified retrospective method. Disclosures of revenue from contracts with customers for periods beginning after January 1, 2018 are presented under ASC Topic 606 and have not materially changed from the prior year amounts. Consistent with this guidance, noninterest income within the scope of this guidance is recognized as services are transferred to our customers in an amount that reflects the considerations we expect to be entitled to in exchange for those services. The Company's revenue streams that were in scope include service charges on deposits, payroll and insurance income, ATM income and other noninterest income. Services Charges on Deposits - Service charges on deposits primarily consist of monthly maintenance charges, correspondent bank service charges, analysis charges and NSF charges. The fee for NSF charges and certain service charges are fixed and the performance obligation is typically satisfied at the time of the related transaction. The consideration for analysis charges and monthly maintenance charges are variable as the fee can be reduced if the customer meets certain qualifying metrics. The Company's performance obligations are satisfied either at the time of the transaction or over the course of a month. Payroll and insurance income - Payroll and insurance income consists principally of payroll processing fees, property and casualty brokerage and employee benefits brokerage. Payroll processing fees are charged as the services are provided and the Company satisfied its performance obligation simultaneously. Property and casualty includes the brokerage of both personal and commercial coverages. The placement of the policy is completion of the Company's performance obligation and revenue is recognized at that time. The Company's commission is a percentage of the premium. Employee benefits brokerage consists of assisting companies in designing and managing comprehensive employee benefit programs. The services provided by the Company are collectively benefit management services which are considered a bundle of services that are highly interrelated. Each of the underlying services are activities to fulfill the benefit management service and are not distinct and separate performance obligations. Revenue is recognized over the contract term as services are rendered on a monthly basis. Customer payments are usually received on a monthly basis. ATM Income - ATM income represents revenues earned from interchange fees and merchant processing fees. Interchange revenues are earned on debit card transactions conducted with payment networks. ATM fees primarily consist of surcharges assessed to our customers for using a non-Bank ATM or a non-Bank customer using our ATM. Such fees generally are recognized concurrently with the delivery of services on a daily basis. Other - Other noninterest income primarily consists of certain transaction based fees where the performance obligation is satisfied simultaneously with the revenue recognition. Contract Costs - Costs associated with revenue from contracts with customers related primarily to contracts that have a period of one year or less. The Company has elected to expense the associated costs as incurred. Contract Balances - The Company records contract assets when revenue is recognized prior to receipt of consideration from the customer. The Company does not have material contract assets at period-end. The Company records contract liabilities when the consideration is received or due in advance of providing services to customers. The Company typically receives payments for its services during the period or at the time services are provided and does not have material contract liabilities at period-end. Recent Accounting Pronouncements ASU 2017-09 — On May 10, 2017, FASB issued ASU 2017-09, Scope of Modification Accounting. This Update amends the scope of modification accounting for share-based payment arrangements. It provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting under ASC 718, Compensation—Stock Compensation. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions and classification of the awards are the same immediately before and after the modification. The ASU is effective for annual reporting periods, including interim periods within those annual reporting periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim period. The guidance is not expected to have a significant impact on the Company's financial position, results of operations or disclosures. ASU 2017-08 — In March 2017, FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Topic 310-20): Premium Amortization on Purchased Callable Debt Securities . The ASU shortens the amortization period for certain callable debt securities held at a premium. The premium on individual callable debt securities shall be amortized to the earliest call date. This guidance does not apply to securities for which prepayments are estimated on a large number of similar loans where prepayments are probable and reasonably estimable. The amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. This update should be adopted on a modified retrospective basis with a cumulative-effect adjustment to retained earnings on the date of adoption. The guidance is not expected to have a significant impact on the Company's financial position, results of operations or disclosures. ASU 2017-04 — In January 2017, FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment . The ASU simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. The Company should perform its goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit's fair value. The impairment charge is limited to the amount of goodwill allocated to that reporting unit. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The guidance is not expected to have a significant impact on the Company's financial position, results of operations or disclosures. ASU 2017-01 — In January 2017, FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . The ASU clarifies the definition of a business to assist with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The guidance is not expected to have a significant impact on the Company's financial position, results of operations or disclosures. ASU 2016-13 — In June 2016, FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU changed the credit loss model on financial instruments measured at amortized cost, available for sale securities and certain purchased financial instruments. Credit losses on financial instruments measured at amortized cost will be determined using a current expected credit loss model which requires the Company to measure all expected credit losses for financial instruments held at the reporting date based on historical experience, current conditions, and reasonable supportable forecasts. This replaces the existing incurred loss model and is applicable to the measurement of credit losses on financial assets measured at amortized cost and applies to some off-balance sheet credit exposures. Purchased financial assets with more-than-insignificant credit deterioration since origination ("PCD assets") measured at amortized cost will have an allowance for credit losses established at acquisition as part of the purchase price. Subsequent increases or decreases to the allowance for credit losses on PCD assets will be recognized in the income statement. Interest income should be recognized on PCD assets based on the effective interest rate, determined excluding the discount attributed to credit losses at acquisition. Credit losses relating to available-for-sale debt securities will be recognized through an allowance for credit losses. The amount of the credit loss is limited to the amount by which fair value is below amortized cost of the available-for-sale debt security. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted and if early adopted, all provisions must be adopted in the same period. The amendments should be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the period adopted. A prospective approach is required for securities with other-than-temporary impairment recognized prior to adoption. The Company is still reviewing the impact of the adoption of this guidance and has established a cross-functional implementation team. The Company expects the allowance for credit losses to increase upon adoption with a corresponding adjustment to retained earnings. The ultimate amount of the increase will depend on the portfolio composition, credit quality, economic conditions and reasonable and supportable forecasts at that time. ASU 2016-02 — In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842) . The new standard requires the recognition of assets and liabilities arising from the lease transactions on the balance sheet and the disclosure of key information about leasing arrangements. Accordingly, a lessee will recognize a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. Both the asset and liability will initially be measured at the present value of the future minimum lease payments over the lease term. Subsequent measurement, including the presentation of expenses and cash flows, will depend on the classification of the lease as either a finance or an operating lease. Initial costs directly attributable to negotiating and arranging the lease will be included in the asset. For leases with a term of 12 months or less, a lessee can make an accounting policy election by class of underlying asset to not recognize an asset and corresponding liability. Lessees will also be required to provide additional qualitative and quantitative disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. These disclosures are intended to supplement the amounts recorded in the financial statements and provide additional information about the nature of an organization’s leasing activities. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. An entity that elects to apply the practical expedients will, in effect, continue to account for leases that commence before the effective date in accordance with previous GAAP unless the lease is modified, except that lessees are required to recognize a right-of-use asset and a lease liability for all operating leases at each reporting date based on the present value of the remaining minimum rental payments that were tracked and disclosed under previous GAAP. The amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company expects to elect the package of practical expedients that allows it to not reassess whether any expired or existing contracts represent leases, the lease classification of any expired or existing lease and initial direct costs for any existing or expired leases. The Company expects this standard will have a material impact on its financial statements through gross-up of the balance sheet for lease assets and liabilities. However, no material change to lease expense recognition is expected.

Acquisitions

Acquisitions	6 Months Ended
Acquisitions	Jun. 30, 2018
Business Combinations [Abstract]
Acquisitions	NOTE 3: ACQUISITIONS Acquisition of AloStar Bank of Commerce On September 30, 2017, State Bank completed its acquisition of AloStar Bank of Commerce ("AloStar"). State Bank Interim Corp., a wholly-owned subsidiary of State Bank, merged with and into AloStar, immediately followed by the merger of AloStar with and into State Bank. Under the terms of the merger agreement, each share of AloStar common stock was converted into the right to receive $24.26 in cash. Total consideration paid was approximately $195.0 million and the final merger consideration was distributed in October 2017. The merger of AloStar was accounted for under the acquisition method of accounting. Assets acquired, liabilities assumed and consideration exchanged were recorded at their respective acquisition date fair values. Fair values are preliminary and subject to refinement for up to one year after the closing date of the acquisition as additional information regarding the closing date fair values becomes available. Goodwill of $7.1 million was generated from the acquisition, all of which is expected to be deductible for income tax purposes. The following table summarizes the assets acquired and liabilities assumed and the consideration payable by the Company at the acquisition date (dollars in thousands) : As Recorded by AloStar Bank of Commerce Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 91,571 $ — $ 91,571 Investment securities available-for-sale 76,436 (195 ) (a) 76,241 Loans, net 728,319 (9,763 ) (b) 718,556 Core deposit intangible — 856 (c) 856 Premises and equipment, net 507 — 507 Other assets 11,430 2,233 (d) 13,663 Total assets acquired $ 908,263 $ (6,869 ) $ 901,394 Liabilities Deposits: Noninterest-bearing $ 102,653 $ — $ 102,653 Interest-bearing 603,069 (121 ) (e) 602,948 Total deposits 705,722 (121 ) 705,601 Other liabilities 7,912 — 7,912 Total liabilities assumed 713,634 (121 ) 713,513 Net identifiable assets acquired over liabilities assumed $ 194,629 $ (6,748 ) $ 187,881 Goodwill $ — $ 7,088 $ 7,088 Net assets acquired over liabilities assumed $ 194,629 $ 340 $ 194,969 Consideration: Cash consideration payable 194,969 Fair value of total consideration transferred $ 194,969 Explanation of fair value adjustments (a) Adjustment reflects the loss on certain securities that were sold immediately following the closing that was deemed to be a more accurate representation of fair value. (b) Adjustment reflects the fair value adjustment based on the State Bank's evaluation of the acquired loan portfolio and includes the adjustment to eliminate the recorded allowance for loan and lease losses. (c) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (d) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (e) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired deposits. The following table presents certain pro forma information as if AloStar had been acquired on January 1, 2017 (dollars in thousands, except per share amounts) . These results combine the historical results of AloStar in the Company's consolidated statements of income and, while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2017. Merger-related costs are not included in the pro forma statements below. Six Months Ended June 30 2018 2017 Pro Forma Pro Forma Net interest income $ 110,986 $ 111,572 Net income 37,670 33,851 Earnings per share: Basic $ .96 $ .87 Diluted .96 .87 The following is a summary of the purchased credit impaired loans acquired in the AloStar transaction on September 30, 2017 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 108,308 Contractual cash flows not expected to be collected (nonaccretable difference) (19,093 ) Expected cash flows at acquisition 89,215 Accretable difference (11,664 ) Basis in acquired loans at acquisition - estimated fair value $ 77,551 On September 30, 2017, the fair value of the purchased non-credit impaired loans acquired in the AloStar transaction was $641.0 million . The gross contractual amounts receivable of the purchased non-credit impaired loans at acquisition was $707.0 million , of which $9.3 million was the amount of contractual cash flows not expected to be collected.

Investment Securities

Investment Securities	6 Months Ended
Investment Securities	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE 4: INVESTMENT SECURITIES The amortized cost and fair value of debt securities classified as available-for-sale are as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Debt Securities Available-for-Sale Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. Government securities $ 67,702 $ — $ 1,023 $ 66,679 $ 70,203 $ — $ 644 $ 69,559 Residential mortgage-backed securities — nonagency 96,933 2,397 98 99,232 115,639 3,183 112 118,710 Residential mortgage-backed securities — agency 557,940 111 15,081 542,970 582,845 319 7,315 575,849 Corporate securities 126,203 1,284 698 126,789 107,115 1,299 77 108,337 Total debt securities available-for-sale $ 848,778 $ 3,792 $ 16,900 $ 835,670 $ 875,802 $ 4,801 $ 8,148 $ 872,455 The amortized cost and fair value of debt securities classified as held-to-maturity are as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Debt Securities Held-to-Maturity Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Asset-backed securities $ 16,742 $ 75 $ — $ 16,817 $ 22,692 $ 259 $ — $ 22,951 Corporate securities — — — — 10,160 240 — 10,400 Total debt securities held-to-maturity $ 16,742 $ 75 $ — $ 16,817 $ 32,852 $ 499 $ — $ 33,351 The amortized cost and estimated fair value of debt securities by contractual maturities are summarized in the tables below (dollars in thousands) : Debt Securities Available-for-Sale Distribution of Maturities (1) June 30, 2018 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: U.S. Government securities $ 18,022 $ 49,680 $ — $ — $ 67,702 Residential mortgage-backed securities — nonagency — — 306 96,627 96,933 Residential mortgage-backed securities — agency 4,806 58,866 125,239 369,029 557,940 Corporate securities 38,884 55,944 31,037 338 126,203 Total debt securities available-for-sale $ 61,712 $ 164,490 $ 156,582 $ 465,994 $ 848,778 Fair Value: U.S. Government securities $ 17,867 $ 48,812 $ — $ — $ 66,679 Residential mortgage-backed securities — nonagency — — 316 98,916 99,232 Residential mortgage-backed securities — agency 4,781 57,518 121,667 359,004 542,970 Corporate securities 38,934 55,339 31,804 712 126,789 Total debt securities available-for-sale $ 61,582 $ 161,669 $ 153,787 $ 458,632 $ 835,670 Debt Securities Held-to-Maturity Distribution of Maturities (1) June 30, 2018 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: Asset-backed securities $ — $ — $ 7,742 $ 9,000 $ 16,742 Corporate securities — — — — — Total debt securities held-to-maturity $ — $ — $ 7,742 $ 9,000 $ 16,742 Fair Value: Asset-backed securities $ — $ — $ 7,773 $ 9,044 $ 16,817 Corporate securities — — — — — Total debt securities held-to-maturity $ — $ — $ 7,773 $ 9,044 $ 16,817 (1) Actual cash flows may differ from contractual maturities as borrowers may prepay obligations without prepayment penalties. The following tables provide information regarding debt securities with unrealized losses (dollars in thousands) : Less than 12 Months 12 Months or More Total Debt Securities Available-for-Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2018 U.S. Government securities $ 41,350 $ 634 $ 25,329 $ 389 $ 66,679 $ 1,023 Residential mortgage-backed securities — nonagency 1,924 10 4,474 88 6,398 98 Residential mortgage-backed securities — agency 322,707 7,573 215,575 7,508 538,282 15,081 Corporate securities 85,683 698 — — 85,683 698 Total temporarily impaired securities $ 451,664 $ 8,915 $ 245,378 $ 7,985 $ 697,042 $ 16,900 December 31, 2017 U.S. Government securities $ 46,625 $ 364 $ 20,436 $ 280 $ 67,061 $ 644 Residential mortgage-backed securities — nonagency 1,403 3 6,269 109 7,672 112 Residential mortgage-backed securities — agency 312,617 2,548 210,862 4,767 523,479 7,315 Corporate securities 32,495 77 — — 32,495 77 Total temporarily impaired securities $ 393,140 $ 2,992 $ 237,567 $ 5,156 $ 630,707 $ 8,148 Less than 12 Months 12 Months or More Total Debt Securities Held-to-Maturity Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2018 Asset-backed securities $ — $ — $ — $ — $ — $ — Total temporarily impaired securities $ — $ — $ — $ — $ — $ — At June 30, 2018 , the Company held 155 debt securities that were in an unrealized loss position. Market changes in interest rates and credit spreads may result in temporary unrealized losses as market prices of securities fluctuate. The Company reviews its investment portfolio on a quarterly basis for indications of other than temporary impairment ("OTTI"). The severity and duration of impairment and the likelihood of potential recovery of impairment is considered along with the intent and ability to hold any impaired security to maturity or recovery of carrying value. More specifically, when analyzing the nonagency portfolio, the Company uses cash flow models that estimate cash flows on security-specific collateral and the transaction structure. Future expected credit losses are determined by using various assumptions, the most significant of which include current default rates, prepayment rates and loss severities. Credit information is available and modeled at the loan level underlying each security during the OTTI analysis; the Company also considers information such as loan to collateral values, FICO scores and geographic considerations, such as home price appreciation or depreciation. These inputs are updated quarterly or as changes occur to ensure that the most current credit and other assumptions are utilized in the analysis. If, based on the analysis, the Company does not expect to recover the entire amortized cost basis of the security, the expected cash flows are discounted at the security's initial effective interest rate to arrive at a present value amount. OTTI credit losses reflect the difference between the present value of cash flows expected to be collected and the amortized cost basis of these securities. At June 30, 2018 , there was no intent to sell any of the securities in an unrealized loss position, and it is more likely than not the Company will not be required to sell these securities. Furthermore, the present value of cash flows expected to be collected exceeded the Company's amortized cost basis of the debt securities; therefore, these securities are not deemed to be other than temporarily impaired. During the second quarter of 2018, the Company transferred a $10.1 million corporate security from held-to-maturity to available-for-sale. The issuing corporation is the target of a merger which caused the Company to change its assessment of the issuing corporation's creditworthiness. Subsequently, the Company sold a $4.0 million portion of this debt security's par value. Sales and calls of securities are summarized in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Debt Securities Available-For-Sale 2018 2017 2018 2017 Proceeds from sales and calls $ 4,275 $ 21,942 $ 4,275 $ 64,778 Gross gains on sales and calls $ 250 $ 89 $ 250 $ 118 Gross losses on sales and calls — (76 ) — (93 ) Net realized gains on sales and calls $ 250 $ 13 $ 250 $ 25 The composition of debt securities reflects the strategy of management to maintain an appropriate level of liquidity while providing a relatively stable source of revenue. The securities portfolio may at times be used to mitigate interest rate risk associated with other areas of the balance sheet while also providing a means for the investment of available funds, providing liquidity and supplying investment securities that are required to be pledged as collateral against specific deposits and for other purposes. Debt securities with an aggregate fair value of $103.9 million and $116.1 million at June 30, 2018 and December 31, 2017 , respectively, were pledged to secure public deposits and repurchase agreements.

Loans

Loans	6 Months Ended
Loans	Jun. 30, 2018
Receivables [Abstract]
Loans	NOTE 5: LOANS Loans, in total, are summarized as follows (dollars in thousands) : Total Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 482,134 $ 451,993 Other commercial real estate 1,216,306 1,255,002 Total commercial real estate 1,698,440 1,706,995 Residential real estate 327,790 333,086 Owner-occupied real estate 370,572 399,370 Commercial, financial & agricultural 1,105,004 973,440 Leases 36,863 52,396 Consumer 66,604 66,906 Total loans 3,605,273 3,532,193 Allowance for loan and lease losses (33,335 ) (28,750 ) Total loans, net $ 3,571,938 $ 3,503,443 Organic loans, net of related discounts, are summarized as follows (dollars in thousands) : Organic Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 454,625 $ 412,540 Other commercial real estate 947,704 949,594 Total commercial real estate 1,402,329 1,362,134 Residential real estate 222,886 196,225 Owner-occupied real estate 270,053 260,273 Commercial, financial & agricultural 666,572 430,205 Leases 36,863 52,396 Consumer 65,019 64,610 Total organic loans (1) 2,663,722 2,365,843 Allowance for loan and lease losses (26,366 ) (24,039 ) Total organic loans, net $ 2,637,356 $ 2,341,804 (1) Includes net deferred loan fees that totaled approximately $10.3 million and $9.3 million at June 30, 2018 and December 31, 2017 , respectively. Purchased non-credit impaired loans ("PNCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Non-Credit Impaired Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 14,282 $ 25,908 Other commercial real estate 194,995 218,660 Total commercial real estate 209,277 244,568 Residential real estate 72,817 96,529 Owner-occupied real estate 82,500 118,294 Commercial, financial & agricultural 426,992 529,184 Consumer 1,503 2,161 Total purchased non-credit impaired loans (1) 793,089 990,736 Allowance for loan and lease losses (2,981 ) (995 ) Total purchased non-credit impaired loans, net $ 790,108 $ 989,741 (1) Includes net discounts that totaled approximately $7.3 million and $12.7 million at June 30, 2018 and December 31, 2017 , respectively. Purchased credit impaired loans ("PCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Credit Impaired Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 13,227 $ 13,545 Other commercial real estate 73,607 86,748 Total commercial real estate 86,834 100,293 Residential real estate 32,087 40,332 Owner-occupied real estate 18,019 20,803 Commercial, financial & agricultural 11,440 14,051 Consumer 82 135 Total purchased credit impaired loans 148,462 175,614 Allowance for loan and lease losses (3,988 ) (3,716 ) Total purchased credit impaired loans, net $ 144,474 $ 171,898 Changes in the carrying value of purchased credit impaired loans are presented in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Purchased Credit Impaired Loans 2018 2017 2018 2017 Balance, beginning of period $ 153,338 $ 149,560 $ 171,898 $ 155,573 Accretion of fair value discounts 6,595 9,228 12,541 16,905 Reductions in principal balances resulting from repayments, write-offs and foreclosures (15,657 ) (27,790 ) (39,693 ) (41,953 ) Change in the allowance for loan and lease losses on purchased credit impaired loans 198 (161 ) (272 ) 312 Balance, end of period $ 144,474 $ 130,837 $ 144,474 $ 130,837 Purchased credit impaired loans are initially recorded at fair value at the acquisition date. The Company re-estimates expected cash flows on purchased credit impaired loans on a quarterly basis. Subsequent decreases in the amount of cash expected to be collected from the borrower results in a provision for loan and lease losses and an increase in the allowance for loan and lease losses. Subsequent increases in the amount of cash expected to be collected from the borrower results first in the reversal of any previously-recorded provision for loan and lease losses and related allowance for loan and lease losses, and then as a prospective increase in the accretable discount on the purchased credit impaired loans. The accretable discount is accreted into interest income over the estimated life of the related loan on a level yield basis. Changes in the value of the accretable discount on purchased credit impaired loans are presented in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Changes in Accretable Discount 2018 2017 2018 2017 Balance, beginning of period $ 57,854 $ 63,066 $ 57,927 $ 69,301 Accretion (6,595 ) (9,228 ) (12,541 ) (16,905 ) Transfers to accretable discounts and exit events, net 2,279 5,970 8,152 7,412 Balance, end of period $ 53,538 $ 59,808 $ 53,538 $ 59,808 The change in the accretable discount is a result of the Company's review and re-estimation of loss assumptions and expected cash flows on purchased credit impaired loans. At June 30, 2018 and December 31, 2017 , loans with a carrying value of $3.1 billion were pledged for lines of credit. At June 30, 2018 , consumer mortgage loans secured by residential real estate properties totaling $104,000 were in formal foreclosure proceedings.

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses (ALLL)	6 Months Ended
Allowance for Loan and Lease Losses (ALLL)	Jun. 30, 2018
Receivables [Abstract]
Allowance for Loan and Lease Losses (ALLL)	NOTE 6: ALLOWANCE FOR LOAN AND LEASE LOSSES (ALLL) The following tables summarize the Company's allowance for loan and lease losses for the periods indicated (dollars in thousands) : Three Months Ended June 30 2018 2017 Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Balance, beginning of period $ 24,882 $ 2,249 $ 4,186 $ 31,317 $ 21,885 $ 491 $ 4,600 $ 26,976 Charge-offs (171 ) (285 ) (35 ) (491 ) (536 ) (197 ) (214 ) (947 ) Recoveries 70 46 — 116 113 1 — 114 Net (charge-offs) recoveries (101 ) (239 ) (35 ) (375 ) (423 ) (196 ) (214 ) (833 ) Provision for loan and lease losses 1,585 971 (163 ) 2,393 1,098 372 375 1,845 Balance, end of period $ 26,366 $ 2,981 $ 3,988 $ 33,335 $ 22,560 $ 667 $ 4,761 $ 27,988 Six Months Ended June 30 2018 2017 Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Balance, beginning of period $ 24,039 $ 995 $ 3,716 $ 28,750 $ 21,086 $ 439 $ 5,073 $ 26,598 Charge-offs (835 ) (325 ) (123 ) (1,283 ) (1,076 ) (245 ) (328 ) (1,649 ) Recoveries 203 64 — 267 190 2 — 192 Net (charge-offs) recoveries (632 ) (261 ) (123 ) (1,016 ) (886 ) (243 ) (328 ) (1,457 ) Provision for loan and lease losses 2,959 2,247 395 5,601 2,360 471 16 2,847 Balance, end of period $ 26,366 $ 2,981 $ 3,988 $ 33,335 $ 22,560 $ 667 $ 4,761 $ 27,988 Activity in the allowance for loan and lease losses on organic loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Organic Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Leases Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 11,932 $ 2,894 $ 2,281 $ 6,230 $ 494 $ 1,051 $ 24,882 Charge-offs (9 ) (64 ) — (46 ) (17 ) (35 ) (171 ) Recoveries 20 7 — 25 4 14 70 Provision 211 (425 ) 673 1,229 (70 ) (33 ) 1,585 Ending balance $ 12,154 $ 2,412 $ 2,954 $ 7,438 $ 411 $ 997 $ 26,366 Six Months Ended June 30, 2018 Beginning balance $ 13,037 $ 2,809 $ 2,075 $ 4,535 $ 629 $ 954 $ 24,039 Charge-offs (277 ) (212 ) — (159 ) (80 ) (107 ) (835 ) Recoveries 20 10 — 106 33 34 203 Provision (626 ) (195 ) 879 2,956 (171 ) 116 2,959 Ending balance $ 12,154 $ 2,412 $ 2,954 $ 7,438 $ 411 $ 997 $ 26,366 Three Months Ended June 30, 2017 Beginning balance $ 12,112 $ 1,666 $ 2,108 $ 4,514 $ 710 $ 775 $ 21,885 Charge-offs (187 ) (25 ) — (82 ) (135 ) (107 ) (536 ) Recoveries — 3 — 22 68 20 113 Provision 1,412 197 (72 ) (791 ) 182 170 1,098 Ending balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 Six Months Ended June 30, 2017 Beginning balance $ 11,767 $ 1,786 $ 2,239 $ 4,093 $ 655 $ 546 $ 21,086 Charge-offs (187 ) (48 ) — (142 ) (499 ) (200 ) (1,076 ) Recoveries — 6 — 51 109 24 190 Provision 1,757 97 (203 ) (339 ) 560 488 2,360 Ending balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 The following table presents the balance of organic loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Organic Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ — $ 12,154 $ 12,154 $ 3,334 $ 1,398,995 $ 1,402,329 Residential real estate — 2,412 2,412 1,350 221,536 222,886 Owner-occupied real estate — 2,954 2,954 1,456 268,597 270,053 Commercial, financial & agricultural — 7,438 7,438 5,039 661,533 666,572 Leases — 411 411 — 36,863 36,863 Consumer — 997 997 — 65,019 65,019 Total organic loans $ — $ 26,366 $ 26,366 $ 11,179 $ 2,652,543 $ 2,663,722 December 31, 2017 Commercial real estate $ — $ 13,037 $ 13,037 $ 3,822 $ 1,358,312 $ 1,362,134 Residential real estate — 2,809 2,809 49 196,176 196,225 Owner-occupied real estate 65 2,010 2,075 808 259,465 260,273 Commercial, financial & agricultural 34 4,501 4,535 280 429,925 430,205 Leases — 629 629 — 52,396 52,396 Consumer — 954 954 — 64,610 64,610 Total organic loans $ 99 $ 23,940 $ 24,039 $ 4,959 $ 2,360,884 $ 2,365,843 Activity in the allowance for loan and lease losses on purchased non-credit impaired loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 336 $ 524 $ 316 $ 1,067 $ 6 $ 2,249 Charge-offs — (36 ) (249 ) — — (285 ) Recoveries 2 2 21 20 1 46 Provision (46 ) (156 ) 353 823 (3 ) 971 Ending balance $ 292 $ 334 $ 441 $ 1,910 $ 4 $ 2,981 Six Months Ended June 30, 2018 Beginning balance $ 230 $ 664 $ 88 $ 8 $ 5 $ 995 Charge-offs — (36 ) (249 ) (37 ) (3 ) (325 ) Recoveries 7 10 21 24 2 64 Provision 55 (304 ) 581 1,915 — 2,247 Ending balance $ 292 $ 334 $ 441 $ 1,910 $ 4 $ 2,981 Three Months Ended June 30, 2017 Beginning balance $ 239 $ 175 $ 76 $ — $ 1 $ 491 Charge-offs — — (80 ) (115 ) (2 ) (197 ) Recoveries — — — — 1 1 Provision (94 ) 167 156 141 2 372 Ending balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 Six Months Ended June 30, 2017 Beginning balance $ 88 $ 72 $ 44 $ 235 $ — $ 439 Charge-offs — — (80 ) (160 ) (5 ) (245 ) Recoveries — — — — 2 2 Provision 57 270 188 (49 ) 5 471 Ending balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 The following table presents the balance of purchased non-credit impaired loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Purchased Non-Credit Impaired Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ — $ 292 $ 292 $ — $ 209,277 $ 209,277 Residential real estate — 334 334 15 72,802 72,817 Owner-occupied real estate 28 413 441 848 81,652 82,500 Commercial, financial & agricultural 782 1,128 1,910 55,166 371,826 426,992 Consumer — 4 4 — 1,503 1,503 Total purchased non-credit impaired loans $ 810 $ 2,171 $ 2,981 $ 56,029 $ 737,060 $ 793,089 December 31, 2017 Commercial real estate $ — $ 230 $ 230 $ — $ 244,568 $ 244,568 Residential real estate — 664 664 19 96,510 96,529 Owner-occupied real estate — 88 88 3,264 115,030 118,294 Commercial, financial & agricultural 8 — 8 1,491 527,693 529,184 Consumer — 5 5 — 2,161 2,161 Total purchased non-credit impaired loans $ 8 $ 987 $ 995 $ 4,774 $ 985,962 $ 990,736 Activity in the allowance for loan and lease losses on purchased credit impaired loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Purchased Credit Impaired Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 2,304 $ 830 $ 825 $ 217 $ 10 $ 4,186 Charge-offs (1 ) (28 ) — — (6 ) (35 ) Recoveries — — — — — — Provision (131 ) (16 ) (9 ) (3 ) (4 ) (163 ) Ending balance $ 2,172 $ 786 $ 816 $ 214 $ — $ 3,988 Six Months Ended June 30, 2018 Beginning balance $ 1,706 $ 1,242 $ 718 $ 42 $ 8 $ 3,716 Charge-offs (34 ) (73 ) (10 ) — (6 ) (123 ) Recoveries — — — — — — Provision 500 (383 ) 108 172 (2 ) 395 Ending balance $ 2,172 $ 786 $ 816 $ 214 $ — $ 3,988 Three Months Ended June 30, 2017 Beginning balance $ 2,073 $ 959 $ 1,531 $ 37 $ — $ 4,600 Charge-offs (160 ) (38 ) — (15 ) (1 ) (214 ) Recoveries — — — — — — Provision 218 47 80 15 15 375 Ending balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 Six Months Ended June 30, 2017 Beginning balance $ 2,183 $ 1,196 $ 1,655 $ 38 $ 1 $ 5,073 Charge-offs (233 ) (42 ) (36 ) (16 ) (1 ) (328 ) Recoveries — — — — — — Provision 181 (186 ) (8 ) 15 14 16 Ending balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 The following table presents the balance of purchased credit impaired loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Purchased Credit Impaired Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ 996 $ 1,176 $ 2,172 $ 74,876 $ 11,958 $ 86,834 Residential real estate 68 718 786 2,262 29,825 32,087 Owner-occupied real estate 695 121 816 7,646 10,373 18,019 Commercial, financial & agricultural 8 206 214 548 10,892 11,440 Consumer — — — — 82 82 Total purchased credit impaired loans $ 1,767 $ 2,221 $ 3,988 $ 85,332 $ 63,130 $ 148,462 December 31, 2017 Commercial real estate $ 1,052 $ 654 $ 1,706 $ 79,085 $ 21,208 $ 100,293 Residential real estate 128 1,114 1,242 3,029 37,303 40,332 Owner-occupied real estate 586 132 718 9,483 11,320 20,803 Commercial, financial & agricultural 32 10 42 2,318 11,733 14,051 Consumer — 8 8 — 135 135 Total purchased credit impaired loans $ 1,798 $ 1,918 $ 3,716 $ 93,915 $ 81,699 $ 175,614 Impaired loans, segregated by class of loans, are presented in the following table (dollars in thousands) : June 30, 2018 December 31, 2017 Unpaid Principal Balance Recorded Investment Related Allowance Unpaid Principal Balance Recorded Investment Related Allowance Impaired Loans (1) With no related allowance recorded: Construction, land & land development $ 75 $ 71 $ — $ 82 $ 79 $ — Other commercial real estate 3,291 3,289 — 4,617 3,822 — Total commercial real estate 3,366 3,360 — 4,699 3,901 — Residential real estate 2,491 2,340 — 453 456 — Owner-occupied real estate 1,640 1,600 — 4,172 4,015 — Commercial, financial & agricultural 61,145 58,974 — 2,739 1,882 — Consumer 39 33 — 51 40 — Subtotal 68,681 66,307 — 12,114 10,294 — With related allowance recorded: Construction, land & land development — — — 113 112 56 Other commercial real estate — — — — — — Total commercial real estate — — — 113 112 56 Residential real estate 789 741 371 1,452 1,399 699 Owner-occupied real estate 966 930 69 350 335 125 Commercial, financial & agricultural 2,949 2,858 1,465 872 821 318 Consumer 80 76 38 83 81 40 Subtotal 4,784 4,605 1,943 2,870 2,748 1,238 Total impaired loans $ 73,465 $ 70,912 $ 1,943 $ 14,984 $ 13,042 $ 1,238 (1) Includes loans with SBA guaranteed balances of $3.6 million and $5.7 million at June 30, 2018 and December 31, 2017 , respectively. The following table presents information related to the average recorded investment and interest income recognized on impaired loans, for the periods presented (dollars in thousands) : June 30, 2018 June 30, 2017 Impaired Loans Average Recorded Investment (1) Interest Income Recognized (2) Average Recorded Investment (1) Interest Income Recognized (2) Three Months Ended Construction, land & land development $ 75 $ — $ 3,458 $ — Other commercial real estate 3,312 8 51 — Total commercial real estate 3,387 8 3,509 — Residential real estate 3,873 — 1,018 — Owner-occupied real estate 2,525 — 2,788 — Commercial, financial & agricultural 57,434 661 2,682 1 Consumer 117 — 72 — Total impaired loans $ 67,336 $ 669 $ 10,069 $ 1 Six Months Ended Construction, land & land development $ 132 $ — $ 4,297 $ — Other commercial real estate 3,359 16 53 — Total commercial real estate 3,491 16 4,350 — Residential real estate 4,099 — 1,031 — Owner-occupied real estate 4,099 — 2,824 — Commercial, financial & agricultural 41,624 1,027 2,736 1 Consumer 131 — 77 — Total impaired loans $ 53,444 $ 1,043 $ 11,018 $ 1 (1) The average recorded investment for troubled debt restructurings was $6.9 million and $7.0 million for the three and six months ended June 30, 2018 , respectively, and was $3.2 million and $4.1 million for the three and six months ended June 30, 2017 , respectively. (2) The interest income recognized on troubled debt restructurings was $67,000 and $131,000 for the three and six months ended June 30, 2018 , respectively, and was $0 for both the three and six months ended June 30, 2017 . The following table presents the recorded investment in nonaccrual loans by loan class at the dates indicated (dollars in thousands) : Nonaccrual Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 71 $ 191 Other commercial real estate 2,799 3,257 Total commercial real estate 2,870 3,448 Residential real estate 3,081 1,855 Owner-occupied real estate 2,530 4,350 Commercial, financial & agricultural 22,114 2,703 Consumer 109 121 Total nonaccrual loans $ 30,704 $ 12,477 The following table presents an analysis of past due organic loans, by class of loans, at the dates indicated (dollars in thousands) : Organic Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Loans > 90 Days and Accruing June 30, 2018 Construction, land & land development $ 138 $ 45 $ 183 $ 454,442 $ 454,625 $ — Other commercial real estate 12 — 12 947,692 947,704 — Total commercial real estate 150 45 195 1,402,134 1,402,329 — Residential real estate 1,114 269 1,383 221,503 222,886 — Owner-occupied real estate 1,591 242 1,833 268,220 270,053 — Commercial, financial & agricultural 193 471 664 665,908 666,572 — Leases — — — 36,863 36,863 — Consumer 117 9 126 64,893 65,019 — Total organic loans $ 3,165 $ 1,036 $ 4,201 $ 2,659,521 $ 2,663,722 $ — December 31, 2017 Construction, land & land development $ 487 $ 45 $ 532 $ 412,008 $ 412,540 $ — Other commercial real estate — — — 949,594 949,594 — Total commercial real estate 487 45 532 1,361,602 1,362,134 — Residential real estate 1,868 92 1,960 194,265 196,225 — Owner-occupied real estate 474 713 1,187 259,086 260,273 — Commercial, financial & agricultural 865 122 987 429,218 430,205 — Leases — — — 52,396 52,396 — Consumer 67 28 95 64,515 64,610 — Total organic loans $ 3,761 $ 1,000 $ 4,761 $ 2,361,082 $ 2,365,843 $ — The following table presents an analysis of past due purchased non-credit impaired loans, by class of loans, at the dates indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Loans > 90 Days and Accruing June 30, 2018 Construction, land & land development $ — $ — $ — $ 14,282 $ 14,282 $ — Other commercial real estate — — — 194,995 194,995 — Total commercial real estate — — — 209,277 209,277 — Residential real estate 1,449 195 1,644 71,173 72,817 — Owner-occupied real estate 46 144 190 82,310 82,500 — Commercial, financial & agricultural 71 930 1,001 425,991 426,992 — Consumer 29 8 37 1,466 1,503 — Total purchased non-credit impaired loans $ 1,595 $ 1,277 $ 2,872 $ 790,217 $ 793,089 $ — December 31, 2017 Construction, land & land development $ 35 $ — $ 35 $ 25,873 $ 25,908 $ — Other commercial real estate — 45 45 218,615 218,660 — Total commercial real estate 35 45 80 244,488 244,568 — Residential real estate 537 126 663 95,866 96,529 — Owner-occupied real estate 283 1,590 1,873 116,421 118,294 — Commercial, financial & agricultural 640 628 1,268 527,916 529,184 — Consumer 28 13 41 2,120 2,161 — Total purchased non-credit impaired loans $ 1,523 $ 2,402 $ 3,925 $ 986,811 $ 990,736 $ — The following table presents an analysis of past due purchased credit impaired loans, by class of loans, at the dates indicated (dollars in thousands) : Purchased Credit Impaired Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans June 30, 2018 Construction, land & land development $ 8 $ 1,798 $ 1,806 $ 11,421 $ 13,227 Other commercial real estate 298 2,364 2,662 70,945 73,607 Total commercial real estate 306 4,162 4,468 82,366 86,834 Residential real estate 962 1,206 2,168 29,919 32,087 Owner-occupied real estate 187 598 785 17,234 18,019 Commercial, financial & agricultural — 1,414 1,414 10,026 11,440 Consumer — — — 82 82 Total purchased credit impaired loans $ 1,455 $ 7,380 $ 8,835 $ 139,627 $ 148,462 December 31, 2017 Construction, land & land development $ 1 $ 1,881 $ 1,882 $ 11,663 $ 13,545 Other commercial real estate 363 3,303 3,666 83,082 86,748 Total commercial real estate 364 5,184 5,548 94,745 100,293 Residential real estate 1,519 1,876 3,395 36,937 40,332 Owner-occupied real estate 85 786 871 19,932 20,803 Commercial, financial & agricultural 201 224 425 13,626 14,051 Consumer — 15 15 120 135 Total purchased credit impaired loans $ 2,169 $ 8,085 $ 10,254 $ 165,360 $ 175,614 For each period indicated, a portion of the Company's purchased credit impaired loans were past due, including many that were 90 days or more past due; however, such delinquencies were included in the Company's performance expectations in determining the fair values of purchased credit impaired loans at each acquisition and at subsequent valuation dates. All purchased credit impaired loan cash flows and the timing of such cash flows continue to be estimable and probable of collection and thus accretion income continues to be recognized on these assets. As such, the referenced purchased credit impaired loans are not considered nonperforming assets. Asset Quality Grades: The Company assigns loans into risk categories based on relevant information about the ability of borrowers to pay their debts, such as current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors. A loan's risk grade is assigned at inception based upon the strength of the repayment sources and reassessed periodically throughout the year. Loans over certain dollar thresholds identified as having weaknesses are subject to more frequent review. In addition, the Company's internal loan review department provides an ongoing, comprehensive and independent assessment of credit risk within the Company. Loans are graded on a scale of 1 to 9. Pass grades are from 1 to 4. Descriptions of the general characteristics of grades 5 and above are as follows: Watch (Grade 5) —Loans graded Watch are pass credits that have not met performance expectations or that have higher inherent risk characteristics warranting continued supervision and attention. OAEM (Grade 6) —Loans graded OAEM (other assets especially mentioned) have potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the Company's credit position at some future date. OAEM loans are not adversely classified and do not expose the institution to sufficient risk to warrant adverse classification. Substandard (Grade 7) —Loans classified as substandard are inadequately protected by the current sound worth and payment capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful (Grade 8) —Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loss (Grade 9) —Loans classified as loss are considered uncollectible and have little value to the Company and their continuance as an active relationship is not warranted. The following table presents the risk grades of the organic loan portfolio, by class of loans, at the dates indicated (dollars in thousands) : Organic Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 418,587 $ 30,238 $ 5,755 $ 45 $ — $ 454,625 Other commercial real estate 904,916 37,816 2,161 2,811 — 947,704 Total commercial real estate 1,323,503 68,054 7,916 2,856 — 1,402,329 Residential real estate 215,547 4,180 311 2,848 — 222,886 Owner-occupied real estate 238,941 23,746 2,214 5,152 — 270,053 Commercial, financial & agricultural 617,246 42,647 262 6,417 — 666,572 Leases 34,481 2,382 — — — 36,863 Consumer 64,828 49 61 78 3 65,019 Total organic loans $ 2,494,546 $ 141,058 $ 10,764 $ 17,351 $ 3 $ 2,663,722 December 31, 2017 Construction, land & land development $ 371,358 $ 38,939 $ 2,086 $ 157 $ — $ 412,540 Other commercial real estate 920,168 22,229 3,365 3,832 — 949,594 Total commercial real estate 1,291,526 61,168 5,451 3,989 — 1,362,134 Residential real estate 188,918 3,668 1,488 2,151 — 196,225 Owner-occupied real estate 240,987 16,891 1,067 1,328 — 260,273 Commercial, financial & agricultural 421,114 7,870 123 1,098 — 430,205 Leases 47,908 4,488 — — — 52,396 Consumer 64,361 58 81 110 — 64,610 Total organic loans $ 2,254,814 $ 94,143 $ 8,210 $ 8,676 $ — $ 2,365,843 The following table presents the risk grades of the purchased non-credit impaired loan portfolio, by class of loans, at the dates indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 14,210 $ 44 $ — $ 28 $ — $ 14,282 Other commercial real estate 155,344 35,540 3,584 527 — 194,995 Total commercial real estate 169,554 35,584 3,584 555 — 209,277 Residential real estate 69,339 1,308 294 1,802 74 72,817 Owner-occupied real estate 72,994 6,148 — 3,358 — 82,500 Commercial, financial & agricultural 321,831 49,628 15,760 39,773 — 426,992 Consumer 1,432 12 — 39 20 1,503 Total purchased non-credit impaired loans $ 635,150 $ 92,680 $ 19,638 $ 45,527 $ 94 $ 793,089 December 31, 2017 Construction, land & land development $ 25,486 $ 385 $ — $ 37 $ — $ 25,908 Other commercial real estate 214,916 1,341 1,825 578 — 218,660 Total commercial real estate 240,402 1,726 1,825 615 — 244,568 Residential real estate 92,119 2,216 791 1,369 34 96,529 Owner-occupied real estate 110,034 3,227 1,280 3,753 — 118,294 Commercial, financial & agricultural 452,822 59,306 5,223 11,833 — 529,184 Consumer 2,091 3 — 37 30 2,161 Total purchased non-credit impaired loans $ 897,468 $ 66,478 $ 9,119 $ 17,607 $ 64 $ 990,736 Classifications on purchased credit impaired loans are based upon the borrower's ability to pay the current unpaid principal balance without regard to the net carrying value of the loan on the Company's balance sheet. Because the values shown in the table below are based on each loan's estimated cash flows, any expected losses should be covered by a combination of the specific reserves established in the allowance for loan and lease losses on purchased credit impaired loans plus the discounts to the unpaid principal balances reflected in the recorded investment of each loan. The following table presents the risk grades of the purchased credit impaired loan portfolio, by class of loans (dollars in thousands) : Purchased Credit Impaired Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 6,466 $ 609 $ 915 $ 5,237 $ — $ 13,227 Other commercial real estate 46,059 15,756 1,273 10,519 — 73,607 Total commercial real estate 52,525 16,365 2,188 15,756 — 86,834 Residential real estate 17,187 4,522 1,274 9,036 68 32,087 Owner-occupied real estate 6,356 3,759 791 7,113 — 18,019 Commercial, financial & agricultural 513 121 — 10,806 — 11,440 Consumer 31 24 19 8 — 82 Total purchased credit impaired loans $ 76,612 $ 24,791 $ 4,272 $ 42,719 $ 68 $ 148,462 December 31, 2017 Construction, land & land development $ 6,677 $ 809 $ 973 $ 5,086 $ — $ 13,545 Other commercial real estate 63,210 11,998 2,361 9,179 — 86,748 Total commercial real estate 69,887 12,807 3,334 14,265 — 100,293 Residential real estate 21,706 6,419 1,590 10,504 113 40,332 Owner-occupied real estate 7,181 4,896 818 7,908 — 20,803 Commercial, financial & agricultural 2,094 211 323 11,423 — 14,051 Consumer 60 28 21 26 — 135 Total purchased credit impaired loans $ 100,928 $ 24,361 $ 6,086 $ 44,126 $ 113 $ 175,614 Troubled Debt Restructurings (TDRs) Total troubled debt restructurings (TDRs) were $6.9 million at June 30, 2018 , with $28,000 in related allowance. At December 31, 2017 , TDRs totaled $1.5 million with no related allowance. At June 30, 2018 , there was one commitment to extend credit to a borrower with an existing troubled debt restructuring totaling $599,000 . At December 31, 2017 , there were no commitments to extend credit to borrowers with an existing troubled debt restructuring. Purchased credit impaired loans modified post-acquisition are not removed from their accounting pools and accounted for as TDRs, even if those loans would otherwise be deemed TDRs. The following table provides information on loans that were modified as TDRs during the periods presented (dollars in thousands) : June 30, 2018 June 30, 2017 TDR Additions (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Six Months Ended Construction, land & land development — $ — $ — — $ — $ — Other commercial real estate 2 2,801 2,801 — — — Total commercial real estate 2 2,801 2,801 — — — Commercial & industrial — — — — — — Owner-occupied real estate — — — — — — Residential real estate 1 2,769 2,769 — — — Consumer & Other — — — — — — Total modifications 3 $ 5,570 $ 5,570 — $ — $ — (1) The pre-modification and post-modification recorded investment amount represents the recorded investment on the date of the loan modification. Since the modifications on these loans were either an interest rate concession or payment term extension, not principal reductions, the pre-modification and post-modification recorded investment amount is the same. There were no loans modified as a TDR during the three months ended June 30, 2018 or 2017 . During the six months ended June 30, 2018 , there was one loan modified as a TDR which subsequently defaulted within twelve months of its modification date with a recorded investment of $848,000 . During the six months ended June 30, 2017 , there were no TDRs that subsequently defaulted within twelve months of their modification dates.

SBA Servicing Rights

SBA Servicing Rights	6 Months Ended
SBA Servicing Rights	Jun. 30, 2018
Transfers and Servicing [Abstract]
SBA Servicing Rights	NOTE 7: SBA SERVICING RIGHTS All sales of SBA loans, consisting of the guaranteed portion, are executed on a servicing retained basis. These loans, which are partially guaranteed by the SBA, are generally secured by business property such as real estate, inventory, equipment and accounts receivable. During the three and six months ended June 30, 2018 , the Company sold SBA loans with unpaid principal balances totaling $9.8 million and $18.4 million , respectively, and recognized $1.0 million and $1.9 million in gains on the loan sales, respectively. During the three and six months ended June 30, 2017 , the Company sold SBA loans with unpaid principal balances totaling $16.5 million and $25.0 million , respectively, and recognized $1.6 million and $2.5 million in gains on the loan sales, respectively. The Company retains the related loan servicing rights and receives servicing fees on the sold loans. Both the servicing fees and the gains on sales of loans are recorded in SBA income on the consolidated statements of income. SBA servicing fees totaled $462,000 and $938,000 for the three and six months ended June 30, 2018 , respectively. SBA servicing fees totaled $407,000 and $840,000 for the three and six months ended June 30, 2017 , respectively. At June 30, 2018 and December 31, 2017 , the Company serviced SBA loans for others with unpaid principal balances totaling $184.8 million and $185.6 million , respectively. The table below summarizes the activity in the SBA servicing rights asset for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 SBA Servicing Rights 2018 2017 2018 2017 Balance, beginning of period $ 4,003 $ 3,547 $ 4,069 $ 3,477 Additions 213 391 413 597 Fair value adjustments (227 ) (110 ) (493 ) (246 ) Balance, end of period $ 3,989 $ 3,828 $ 3,989 $ 3,828 The fair value of the SBA servicing rights asset, key metrics, and the sensitivity of the fair value due to adverse changes in key economic assumptions at the periods presented are as follows (dollars in thousands) : SBA Servicing Rights June 30, 2018 December 31, 2017 Fair value $ 3,989 $ 4,069 Weighted average discount rate 12.7 % 12.9 % Decline in fair value due to a 100 basis point adverse change $ (130 ) $ (140 ) Decline in fair value due to a 200 basis point adverse change (253 ) (272 ) Prepayment speed 11.0 % 9.1 % Decline in fair value due to a 10% adverse change $ (160 ) $ (141 ) Decline in fair value due to a 20% adverse change (310 ) (275 ) Weighted average remaining life (years) 5.9 6.7 The sensitivity calculations above are hypothetical and should not be considered to be predictive of future performance. As indicated, changes in fair value based on adverse changes in model inputs and/or assumptions generally cannot be extrapolated because the relationship of the change in input or assumption to the change in fair value may not be linear. In addition, the effect of an adverse variation in a particular input or assumption on the value of the SBA servicing rights is calculated without changing any other input or assumption. In reality, changes in one factor may magnify or counteract the effect of the change. The risk inherent in the SBA servicing rights asset includes prepayments at different rates than anticipated or resolution of loans at dates not consistent with the estimated expected lives. These events would cause the value of the servicing asset to decline at a faster or slower rate than originally anticipated. Information about the SBA loans serviced by the Company at and for the periods presented are as follows (dollars in thousands) : June 30, 2018 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Six Months Ended June 30, 2018 Serviced for others $ 184,803 $ 557 $ — $ — Held-for-sale 15,874 — — — Held-for-investment 151,343 1,677 5,714 52 Total SBA loans serviced $ 352,020 $ 2,234 $ 5,714 $ 52 December 31, 2017 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Six Months Ended June 30, 2017 Serviced for others $ 185,557 $ 1,555 $ — $ — Held-for-sale 10,420 — — — Held-for-investment 153,810 2,508 6,627 — Total SBA loans serviced $ 349,787 $ 4,063 $ 6,627 $ —

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	6 Months Ended
Derivative Instruments and Hedging Activities	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS & HEDGING ACTIVITIES	NOTE 8: DERIVATIVE INSTRUMENTS & HEDGING ACTIVITIES Interest Rate Swaps and Caps Risk Management Objective of Interest Rate Swaps and Caps The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity and credit risk, primarily by managing the amount, sources and duration of certain balance sheet assets and liabilities. In the normal course of business, the Company also uses derivative financial instruments to add stability to interest income or expense and to manage its exposure to movements in interest rates. The Company does not use derivatives for trading or speculative purposes and only enters into transactions that have a qualifying hedging relationship. The Company's hedging strategies involving interest rate derivatives are classified as either Fair Value Hedges or Cash Flow Hedges, depending upon the rate characteristic of the hedged item. Fair Value Hedge : As a result of interest rate fluctuations, fixed-rate assets and liabilities will appreciate or depreciate in fair value. When effectively hedged, this appreciation or depreciation will generally be offset by fluctuations in the fair value of the derivative instruments that are linked to the hedged assets and liabilities. This strategy is referred to as a fair value hedge. Cash Flow Hedge : Cash flows related to floating-rate assets and liabilities will fluctuate with changes in an underlying rate index. When effectively hedged, the increases or decreases in cash flows related to the floating rate asset or liability will generally be offset by changes in cash flows of the derivative instrument designated as a hedge. This strategy is referred to as a cash flow hedge. Credit and Collateral Risks for Interest Rate Swaps and Caps The Company manages credit exposure on interest rate swap and cap transactions by entering into a bilateral credit support agreement with each counterparty. The credit support agreements require collateralization of exposures beyond specified minimum threshold amounts. The details of these agreements, including the minimum thresholds, vary by counterparty. Refer to Note 9 , Balance Sheet Offsetting, for more information on collateral pledged and received under these agreements. The Company’s agreements with its interest rate swap and cap counterparties contain a provision where if either party defaults on any of its indebtedness, then it could also be declared in default on its derivative obligations. The agreements with derivative counterparties also include provisions that if not met, could result in the Company being declared in default. If the Company were to be declared in default, the counterparty could terminate the derivative positions and the Company and the counterparty would be required to settle their obligations under the agreements. At June 30, 2018 , the Company had no derivatives in a net liability position under these agreements. Mortgage Derivatives Risk Management Objective of Mortgage Lending Activities The Company also maintains a risk management program to manage interest rate risk and pricing risk associated with its mortgage lending activities. The risk management program includes the use of forward contracts and other derivatives that are recorded in the financial statements at fair value and are used to offset changes in value of the mortgage inventory due to changes in market interest rates. As a normal part of our operations, we enter into derivative contracts to economically hedge risks associated with overall price risk related to interest rate lock commitments ("IRLCs") and mortgage loans held-for-sale for which the fair value option has been elected. Fair value changes occur as a result of interest rate movements as well as changes in the value of the associated servicing. Derivative instruments used include forward sale commitments and IRLCs. Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of mortgage loans to third party investors are considered derivatives. It is the Company's practice to enter into forward commitments for the future delivery of mortgage loans in order to economically hedge the effect of changes in interest rates resulting from interest rate lock commitments. Credit and Collateral Risks for Mortgage Lending Activities The Company’s underlying risks are primarily related to interest rates and forward sales commitments entered into as part of its mortgage banking activities. Forward sales commitments are contracts for the delayed delivery or net settlement of an underlying instrument, such as a mortgage loan, in which the seller agrees to deliver on a specified future date, either a specified instrument at a specified price or yield or the net cash equivalent of an underlying instrument. These hedges are used to preserve the Company’s position relative to future sales of mortgage loans to third parties in an effort to minimize the volatility of the expected gain on sale from changes in interest rate and the associated pricing changes. Derivative Fair Values The table below presents the fair values of the Company's derivatives at the dates presented (dollars in thousands) : Derivative Assets (1) Derivative Liabilities (1) June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Derivatives Designated as Hedging Instruments Interest rate swaps and caps $ 4,230 $ 2,011 $ — $ 116 Total $ 4,230 $ 2,011 $ — $ 116 Derivatives Not Designated as Hedging Instruments Mortgage derivatives $ 1,013 $ 616 $ 699 $ 238 Total $ 1,013 $ 616 $ 699 $ 238 (1) All derivative assets are located in "Other Assets" on the consolidated statements of financial condition and all derivative liabilities are located in "Other Liabilities" on the consolidated statements of financial condition. The tables below presents the effect of fair value and cash flow hedge accounting on the consolidated statements of income for the periods presented (dollars in thousands) : Three Months Ended June 30 2018 2017 Interest Income Interest Expense Noninterest Income Interest Income Interest Expense Noninterest Income Total amounts of income and expense line items presented in the consolidated statements of income $ 63,688 $ 7,558 $ 10,917 $ 49,847 $ 3,369 $ 10,476 Gain (loss) on fair value hedging relationships in Subtopic 815-20 Interest rate swaps: Hedged items (588 ) — — — — 425 Derivatives designated as hedging instruments 668 — — — — (464 ) Gain (loss) on cash flow hedging relationships in Subtopic 815-20 Interest rate caps: Amount of loss reclassified from accumulated other comprehensive loss into income — — — — 430 — Six Months Ended June 30 2018 2017 Interest Income Interest Expense Noninterest Income Interest Income Interest Expense Noninterest Income Total amounts of income and expense line items presented in the consolidated statements of income $ 124,249 $ 13,263 $ 21,378 $ 97,044 $ 6,608 $ 19,935 Gain (loss) on fair value hedging relationships in Subtopic 815-20 Interest rate swaps: Hedged items (2,316 ) — — — — (83 ) Derivatives designated as hedging instruments 2,527 — — — — 32 Gain (loss) on cash flow hedging relationships in Subtopic 815-20 Interest rate caps: Amount of loss reclassified from accumulated other comprehensive loss into income — 91 — — 834 — Derivatives Designated as Hedging Instruments Fair Value Hedges The Company uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps, designated as fair value hedges, involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed payments over the life of the agreements without the exchange of the underlying notional amount. The gain or loss on the derivative as well as the offsetting gain or loss on the hedged item attributable to the hedged risk are recognized in earnings. At June 30, 2018 and December 31, 2017 , the Company had 72 and 84 interest rate swaps with an aggregate notional amount of $123.0 million and $141.9 million , designated as fair value hedges associated with the Company's fixed rate loan program. The tables below presents the effect of fair value hedges on the consolidated statements of financial condition for the periods presented (dollars in thousands) : Line Item in the Statement of Financial Condition in Which the Hedged Item Is Included Carrying Amount of the Hedged Asset Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Loans $ 119,559 $ 139,391 $ (4,145 ) $ (1,892 ) Total $ 119,559 $ 139,391 $ (4,145 ) $ (1,892 ) Cash Flow Hedges The Company used interest rate caps as part of its interest rate risk management strategy. Interest rate caps, designated as cash flow hedges, involve the payment of a premium to a counterparty based on the notional size and cap strike rate. The Company's former cash flow hedges were for the purpose of capping interest rates paid on deposits, which protected the Company in a rising rate environment. The caps were purchased during the first quarter of 2013 to hedge the variable cash outflows associated with these liabilities; they originally had a five -year life and notional value of $200.0 million . These caps expired in the first quarter of 2018. Amounts reported in AOCI related to derivatives were reclassified to interest expense as the interest rate cap premium was amortized over the life of the cap. The table below presents the effect of the Company's derivatives in cash flow hedging relationships for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Interest Rate Products Location 2018 2017 2018 2017 Amount of (loss) gain recognized in AOCI on derivatives OCI $ — $ 21 $ (4 ) $ 80 Amount of loss reclassified from AOCI into income Interest expense — 430 91 834 Amount of loss recognized in consolidated statements of comprehensive income $ — $ (409 ) $ (95 ) $ (754 ) Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At June 30, 2018 , the Company had no interest rate swaps that were not designated as fair value hedges associated with the Company's fixed rate loan program and recognized no related income statement impact during the three and six months ended June 30, 2018 . For the three and six months ended June 30, 2017 , there were net losses of $40,000 and $56,000 , respectively, recorded in the income statement for the interest rate swaps not designated as hedging instruments. Mortgage Derivatives Mortgage derivative fair value assets and liabilities are recorded in "Other Assets" and "Other Liabilities," respectively, on the consolidated statements of financial condition. At June 30, 2018 and December 31, 2017 , the fair value of mortgage derivative assets was $1.0 million and $616,000 , respectively, and the fair value of mortgage derivative liabilities was $699,000 and $238,000 , respectively. At June 30, 2018 and December 31, 2017 , the Company had approximately $52.7 million and $36.3 million , respectively, of interest rate lock commitments, and $82.6 million and $55.8 million , respectively, of forward commitments for the future delivery of residential mortgage loans. The net gain related to interest rate lock commitments for the three months ended June 30, 2018 was $204,000 , compared to a loss of $284,000 for the same period in 2017 . The net gains related to interest rate lock commitments were $542,000 and $329,000 for the six months ended June 30, 2018 and 2017 , respectively. The net loss for forward commitments related to these mortgage loans was $534,000 for the three months ended June 30, 2018 , compared to a net gain of $303,000 for the same period in 2017 . The net losses for forward commitments were $606,000 and $682,000 for the six months ended June 30, 2018 and 2017 , respectively. The table below presents the effect of the Company's derivatives not designated as hedging instruments for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Interest Rate Products Location 2018 2017 2018 2017 Amount of loss recognized in income on interest rate swaps Noninterest income $ — $ (40 ) $ — $ (56 ) Amount of gain (loss) recognized in income on interest rate lock commitments Noninterest income 204 (284 ) 542 329 Amount of (loss) gain recognized in income on forward commitments Noninterest income (534 ) 303 (606 ) (682 ) Total (loss) gain recognized in income on derivatives not designated as hedging instruments $ (330 ) $ (21 ) $ (64 ) $ (409 )

Balance Sheet Offsetting and Re

Balance Sheet Offsetting and Repurchase Agreements	6 Months Ended
Balance Sheet Offsetting and Repurchase Agreements	Jun. 30, 2018
Offsetting [Abstract]
Balance Sheet Offsetting and Repurchase Agreements	NOTE 9: BALANCE SHEET OFFSETTING AND REPURCHASE AGREEMENTS Balance Sheet Offsetting Certain financial instruments, including repurchase agreements and derivatives (interest rate swaps and caps), may be eligible for offset in the consolidated statements of financial condition and/or subject to master netting arrangements or similar agreements; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The table below presents information about the Company’s financial instruments that are eligible for offset in the consolidated statements of financial condition at the dates presented (dollars in thousands) : Gross Amounts Recognized Gross Amounts Offset on the Statement of Financial Condition Net Amounts Presented on the Statement of Financial Condition Gross Amounts Not Offset on the Statement of Financial Condition Net Amount Financial Instruments Collateral Received/Posted (1) June 30, 2018 Offsetting Assets Interest rate swaps and caps $ 4,230 $ — $ 4,230 $ — $ (4,230 ) $ — Offsetting Liabilities Interest rate swaps and caps $ — $ — $ — $ — $ — $ — Repurchase agreements 13,525 — 13,525 — (13,525 ) — Total liabilities $ 13,525 $ — $ 13,525 $ — $ (13,525 ) $ — December 31, 2017 Offsetting Assets Interest rate swaps and caps $ 2,011 $ — $ 2,011 $ (116 ) $ (1,895 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 116 $ — $ 116 $ (116 ) $ — $ — Repurchase agreements 25,209 — 25,209 — (25,209 ) — Total liabilities $ 25,325 $ — $ 25,325 $ (116 ) $ (25,209 ) $ — (1) The application of collateral cannot reduce the net amount below zero; therefore, excess collateral received/posted is not reflected in this table. All positions are fully collateralized. Repurchase Agreements The Company utilizes securities sold under repurchase agreements to facilitate the needs of its customers. Securities sold under repurchase agreements consist of balances in the transaction accounts of commercial customers swept nightly to an overnight investment account and are collateralized with investment securities having a market value no less than the balance borrowed. The investment securities pledged are subject to market fluctuations as well as prepayments of principal. The Company monitors the risk of the fair value of its pledged collateral falling below the balance of the repurchase agreements on a daily basis and may be required to provide additional collateral. Securities pledged as collateral are maintained with a safekeeping agent. At June 30, 2018 and December 31, 2017 , securities sold under repurchase agreements were $13.5 million and $25.2 million , respectively, all of which mature on an overnight and continuous basis. At both June 30, 2018 and December 31, 2017 , investment securities pledged for the outstanding repurchase agreements consisted of U.S. government sponsored agency mortgage-backed securities.

Regulatory Matters

Regulatory Matters	6 Months Ended
Regulatory Matters	Jun. 30, 2018
Banking and Thrift [Abstract]
Regulatory Matters	NOTE 10: REGULATORY MATTERS Regulatory Capital Requirements Beginning on January 1, 2015, the Company and State Bank became subject to the provisions of the Basel III final rule that governs the regulatory capital calculation, including transitional, or phase-in, provisions. The methods for calculating the risk-based capital ratios will change as the provisions of the Basel III final rule related to the numerator (capital) and denominator (risk-weighted assets) are fully phased in on January 1, 2019. The ongoing methodological changes will result in differences in the reported capital ratios from one reporting period to the next that are independent of applicable changes in the capital base, asset composition, off-balance sheet exposures or risk profile. Beginning on January 1, 2016, the Company and State Bank must maintain a capital conservation buffer to avoid restrictions on capital distributions or discretionary bonus payments. This buffer must consist solely of Common Equity Tier 1 Capital, but the buffer applies to all three measurements (Common Equity Tier 1, Tier 1 capital and total capital) in addition to the minimum risk-based capital requirements. The capital conservation buffer required for 2018 is common equity equal to 1.875% of risk-weighted assets and will increase by .625% per year until reaching 2.5% beginning January 1, 2019. The minimum regulatory capital ratios and ratios to be considered well-capitalized under prompt corrective action provisions at both June 30, 2018 and December 31, 2017 are presented in the table below: Capital Ratio Requirements Minimum Requirement Well-capitalized (1) Common Equity Tier 1 (CET1) capital ratio 4.50% 6.50% Tier 1 risk-based capital ratio 6.00% 8.00% Total risk-based capital ratio 8.00% 10.00% Tier 1 leverage ratio 4.00% 5.00% (1) The prompt corrective action provisions are only applicable at the bank level. At June 30, 2018 and December 31, 2017 , the Company and State Bank exceeded all regulatory capital adequacy requirements to which they were subject. The Company's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : June 30, 2018 December 31, 2017 Actual Required Actual Required Amount Ratio Minimum Amount Amount Ratio Minimum Amount Company Common Equity Tier 1 (CET1) capital ratio $ 569,237 12.79 % $ 200,354 $ 547,822 12.61 % $ 195,433 Tier 1 risk-based capital ratio 569,237 12.79 % 267,139 547,822 12.61 % 260,578 Total risk-based capital ratio 602,572 13.53 % 356,186 576,572 13.28 % 347,437 Tier 1 leverage ratio 569,237 11.75 % 193,773 547,822 11.24 % 194,924 State Bank's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : June 30, 2018 December 31, 2017 Actual Required Actual Required Amount Ratio Minimum Amount Well Capitalized Amount Amount Ratio Minimum Amount Well Capitalized Amount State Bank Common Equity Tier 1 (CET1) capital ratio $ 494,402 11.13 % $ 199,943 $ 288,807 $ 481,135 11.10 % $ 194,972 $ 281,626 Tier 1 risk-based capital ratio 494,402 11.13 % 266,591 355,455 481,135 11.10 % 259,962 346,617 Total risk-based capital ratio 527,737 11.88 % 355,455 444,318 509,885 11.77 % 346,617 433,271 Tier 1 leverage ratio 494,402 10.21 % 193,611 242,014 481,135 9.90 % 194,429 243,037 Regulatory Restrictions on Dividends Regulatory policy statements provide that generally bank holding companies should pay dividends only out of current operating earnings and that the level of dividends must be consistent with current and expected capital requirements. Dividends received from State Bank have been the primary source of funds available for the declaration and payment of dividends to the Company's common shareholders. Federal and state banking laws and regulations restrict the amount of dividends banks may distribute without prior regulatory approval. At June 30, 2018 , State Bank had no capacity to pay dividends to the Company without prior regulatory approval. At June 30, 2018 , the Company had $66.5 million in cash and due from bank accounts, which can be used for additional capital as needed by State Bank, payment of holding company expenses, payment of dividends to shareholders, or for other corporate purposes.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
Commitments and Contingent Liabilities	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE 11: COMMITMENTS AND CONTINGENT LIABILITIES Commitments In order to meet the financing needs of its customers, the Company maintains financial instruments with off-balance-sheet risk in the normal course of business. These financial instruments include commitments to extend credit and standby letters of credit and involve, to varying degrees, elements of credit, interest rate and/or liquidity risk. Such financial instruments are recorded when they are funded and the related fees are generally recognized when collected. Commitments to extend credit are legally binding agreements to lend to customers. Commitments generally have fixed maturity dates or other termination clauses with required fee payments. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. The amount of collateral required, if deemed necessary upon extension of credit, is determined on a case by case basis by management through credit evaluation of the customer. Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those guarantees are issued primarily to support public and private borrowing arrangements. In order to minimize its exposure, the Company's credit policies govern the issuance of standby letters of credit. The Company's exposure to credit loss is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as we do for on-balance-sheet instruments. A summary of the Company's commitments is as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Commitments to extend credit: Fixed $ 91,509 $ 65,117 Variable 944,668 914,524 Letters of credit: Fixed 5,759 5,978 Variable 6,895 11,428 Total commitments $ 1,048,831 $ 997,047 The fixed rate loan commitments have maturities ranging from one month to thirteen years . Management takes appropriate actions to mitigate interest rate risk associated with these fixed rate commitments through various measures including, but not limited to, the use of derivative financial instruments. Contingent Liabilities Mortgage loan sales agreements contain covenants that may, in limited circumstances, require the Company to repurchase or indemnify the investors for losses or costs related to the loans the Company has sold. As a result of the potential recourse provisions, the Company maintains a recourse liability for mortgage loans sold to investors. At June 30, 2018 , the recourse liability was $296,000 . Furthermore, in the normal course of business, the Company is involved in various legal proceedings. In the opinion of management, any liability resulting from such proceedings would not have a material effect on the Company's financial statements.

Fair Value

Fair Value	6 Months Ended
Fair Value	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value	NOTE 12: FAIR VALUE Overview Fair value measurements are determined based on the assumptions that market participants would use in pricing an asset or liability. As a basis for considering market participant assumptions in fair value measurements, the Financial Accounting Standards Board's Accounting Standards Codification Topic 820 ("ASC 820") Fair Value Measurements and Disclosures establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity's own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs classified within Level 3 of the hierarchy). Fair Value Hierarchy Level 1 Valuation is based on inputs that are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 Valuation is based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, such as interest rates, yield curves observable at commonly quoted intervals, and other market-corroborated inputs. Level 3 Valuation is generated from techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include the use of option pricing models, discounted cash flow models and similar techniques. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. The Company evaluates fair value measurement inputs on an ongoing basis in order to determine if there is a change of sufficient significance to warrant a transfer between levels. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company's valuation process. For the six months ended June 30, 2018 and the year ended December 31, 2017 , there were no transfers between levels. Fair Value Option ASC 820 allows companies to report selected financial assets and liabilities at fair value using the fair value option. The changes in fair value are recognized in earnings and the assets and liabilities measured under this methodology are required to be displayed separately on the balance sheet. The Company made the election to record mortgage loans held-for-sale at fair value under the fair value option, which allows for a more effective offset of the changes in fair values of the loans and the derivative instruments used to hedge them without the burden of complying with the requirements for hedge accounting. Financial Assets and Financial Liabilities Measured on a Recurring Basis The Company uses the following methods and assumptions in estimating the fair value of its financial assets and financial liabilities on a recurring basis: Investment Securities Available-for-Sale At June 30, 2018 , the Company's investment portfolio primarily consisted of U.S. government agency mortgage-backed securities, nonagency mortgage-backed securities, U.S. government securities, municipal securities, asset-backed securities, and corporate securities. Fair Values for U.S. Treasury and equity securities are determined by obtaining quoted prices on nationally recognized securities exchanges utilizing Level 1 inputs. Other securities classified as available-for-sale are reported at fair value utilizing Level 2 inputs. The fair value of other securities classified as available-for-sale are determined using widely accepted valuation techniques including matrix pricing and broker-quote-based applications. Inputs may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond's terms and conditions, among other relevant items. The Company reviews the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company validates the appropriateness of the valuations provided by the independent pricing service to prices obtained from an additional third party or prices derived using internal models. Hedged Loans Loans involved in fair value hedges are recorded at fair value on a recurring basis. The estimated fair value is determined using Level 2 inputs consistent with the valuation methodology for interest rate swaps discussed below. The Company does not record other loans held for investment at fair value on a recurring basis. Mortgage Loans Held-for-Sale Mortgage loans held-for-sale are recorded at fair value on a recurring basis. The estimated fair value is determined using Level 2 inputs based on observable data such as the existing forward commitment terms or the current market value of similar loans. Interest income is recorded in interest income on the consolidated statements of income and is based on the contractual terms of the loan. None of these loans were 90 days or more past due or on nonaccrual at June 30, 2018 . At June 30, 2018 , the aggregate fair value of the Company's mortgage loans held-for-sale was $39.2 million and the contractual balance including accrued interest was $38.1 million , with a fair value mark totaling $1.2 million . The Company recognized a gain of $251,000 and a gain of $617,000 for the three and six months ended June 30, 2018 , respectively, related to the change in fair value of the mortgage loans held-for-sale, included in "mortgage banking income" on the consolidated statements of income. For the three and six months ended June 30, 2017 , the amount recognized related to the change in fair value of the mortgage loans held-for-sale was a loss of $243,000 and a gain of $482,000 , respectively. Derivative Financial Instruments Interest Rate Swaps and Caps The Company uses interest rate swaps to provide longer-term fixed rate funding to its customers and interest rate caps to mitigate the interest rate risk on its variable rate liabilities. The majority of these derivatives are traded within highly active dealer markets. In order to determine the fair value of these instruments, the Company utilizes the exchange price or dealer market price for the particular derivative contract. Therefore, these derivative contracts are classified as Level 2. The Company utilizes an independent third party valuation company to validate the dealer prices. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are considered to have been derived utilizing Level 3 inputs. The Company evaluates the credit risk of its counterparties as well as that of the Company. The Company has considered factors such as the likelihood of default by the Company and its counterparties, its net exposures, and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. Counterparty exposure is evaluated by netting positions that are subject to master netting arrangements, as well as considering the amount of collateral securing the position. The Company reviews its counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to adjust the exposure. The Company also utilizes this approach to estimate its own credit risk on derivative liability positions. To date, the Company has not realized any losses due to a counterparty's inability to pay any net uncollateralized position. Mortgage Derivatives Mortgage derivatives include interest rate lock commitments to originate residential mortgage loans held-for-sale. The Company relies on an internal valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held-for-sale. The model groups the interest rate lock commitments by interest rate and term, applies an estimated pull-through rate based on historical experience, and then multiplies by quoted investor prices which were determined to be reasonably applicable to the loan commitment group based on interest rate, term, and rate lock expiration date of the loan commitment group. While there are Level 2 and 3 inputs used in the valuation model, the Company has determined that the majority of the inputs significant in the valuation of the interest rate lock commitments fall within Level 3 of the fair value hierarchy. Changes in the fair values of these derivatives are included in "mortgage banking income" on the consolidated statements of income. Mortgage derivatives also include forward commitments to sell residential mortgage loans to various investors when interest rate locks are entered into, in order to hedge the change in interest rates resulting from its commitment to fund loans. The Company also relies on an internal valuation model to estimate the fair value of its forward commitments to sell residential mortgage loans (i.e., an estimate of what the Company would receive or pay to terminate the forward delivery contract based on market prices for similar financial instruments), which includes matching specific terms and maturities of the forward commitments against applicable investor pricing available (Level 2). Changes in the fair values of these derivatives are included in "mortgage banking income" on the consolidated statements of income. SBA Servicing Rights The Company has the rights to service a portfolio of SBA loans. The SBA servicing rights are measured at fair value when loans are sold on a servicing retained basis. The servicing rights are subsequently measured at fair value on a recurring basis utilizing Level 3 inputs. Management uses a model operated and maintained by a third party to calculate the present value of future cash flows using the third party's market-based assumptions. The future cash flows for each asset are based on the asset's unique characteristics and the third party's market-based assumptions for prepayment speeds, default and voluntary prepayments. For non-guaranteed portions of servicing assets, future cash flows are estimated using loan specific assumptions for losses and recoveries. Adjustments to fair value are recorded as a component of "SBA income" on the consolidated statements of income. Please reference Note 7 for the roll-forward of the SBA servicing rights asset at fair value utilizing level 3 inputs. The following tables present financial assets and financial liabilities measured at fair value on a recurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : June 30, 2018 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Equity securities - financial services industry $ — $ 1,515 $ — $ 1,515 U.S. Government securities — 66,679 — 66,679 Residential mortgage-backed securities — nonagency — 99,232 — 99,232 Residential mortgage-backed securities — agency — 542,970 — 542,970 Corporate securities — 126,789 — 126,789 Hedged loans — 119,559 — 119,559 Mortgage loans held-for-sale — 39,222 — 39,222 Mortgage derivatives — 52 961 1,013 Interest rate swaps and caps — 4,230 — 4,230 SBA servicing rights — — 3,989 3,989 Total recurring assets at fair value $ — $ 998,733 $ 4,950 $ 1,003,683 Liabilities: Interest rate swaps and caps $ — $ — $ — $ — Mortgage derivatives — 264 435 699 Total recurring liabilities at fair value $ — $ 264 $ 435 $ 699 December 31, 2017 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Equity securities - financial services industry $ — $ 1,515 $ — $ 1,515 U.S. Government securities — 69,559 — 69,559 Residential mortgage-backed securities — nonagency — 118,710 — 118,710 Residential mortgage-backed securities — agency — 575,849 — 575,849 Corporate securities — 108,337 — 108,337 Hedged loans — 139,391 — 139,391 Mortgage loans held for sale — 25,791 — 25,791 Mortgage derivatives — 101 515 616 Interest rate swaps and caps — 2,011 — 2,011 SBA servicing rights — — 4,069 4,069 Total recurring assets at fair value $ — $ 1,039,749 $ 4,584 $ 1,044,333 Liabilities: Interest rate swaps and caps $ — $ 116 $ — $ 116 Mortgage derivatives — 38 200 238 Total recurring liabilities at fair value $ — $ 154 $ 200 $ 354 Changes in the carrying value of mortgage derivatives utilizing Level 3 inputs are presented in the following tables for the periods presented (dollars in thousands) : Three Months Ended June 30 Six Months Ended June 30 2018 2018 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 916 $ 310 $ 515 $ 200 Issuances (1) 430 430 1,031 740 Settlements and closed loans (1) (385 ) (305 ) (585 ) (505 ) Balance, end of period $ 961 $ 435 $ 961 $ 435 Three Months Ended June 30 Six Months Ended June 30 2017 2017 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 1,096 $ 465 $ 699 $ 445 Issuances (1) 362 363 1,204 828 Settlements and closed loans (1) (568 ) (443 ) (1,013 ) (888 ) Balance, end of period $ 890 $ 385 $ 890 $ 385 (1) The change in fair value, recorded as a component of "mortgage banking income" on the consolidated statements of income, was a loss of $80,000 and a gain of $211,000 for the three and six months ended June 30, 2018 , respectively. The change in fair value resulted in a loss of $126,000 and a gain of $251,000 for the three and six months ended June 30, 2017 , respectively. Financial Assets Measured on a Nonrecurring Basis The Company uses the following methods and assumptions in estimating the fair value of its financial assets on a nonrecurring basis: Impaired Loans Loans, excluding purchased credit impaired loans, are considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. The fair values of impaired loans are measured on a nonrecurring basis and are based on the underlying collateral value of each loan if repayment is expected solely from the collateral. Collateral values are estimated using Level 2 inputs that are based on observable market data such as an appraisal. Updated appraisals are obtained on at least an annual basis. Level 3 inputs are based on the Company's customized discounting criteria when management determines the fair value of the collateral is further impaired. The following table presents financial assets measured at fair value on a nonrecurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total June 30, 2018 Impaired loans $ — $ — $ 68,969 $ 68,969 Total nonrecurring assets at fair value $ — $ — $ 68,969 $ 68,969 December 31, 2017 Impaired loans $ — $ — $ 11,804 $ 11,804 Total nonrecurring assets at fair value $ — $ — $ 11,804 $ 11,804 Impaired loans, excluding purchased credit impaired loans, that are measured for impairment using the fair value of collateral for collateral dependent loans had recorded investments of $70.9 million and $13.0 million with respective valuation allowances of $1.9 million and $1.2 million at June 30, 2018 and December 31, 2017 , respectively. Nonfinancial Assets Measured on a Nonrecurring Basis The Company uses the following methods and assumptions in estimating the fair values of its nonfinancial assets on a nonrecurring basis: Other Real Estate Owned Other real estate owned ("OREO") consists of real estate acquired through foreclosure or a deed in lieu of foreclosure in satisfaction of a loan, OREO acquired in a business acquisition, and banking premises no longer used for a specific business purpose. Real estate obtained in satisfaction of a loan is initially recorded at the lower of the principal investment in the loan or the fair value of the collateral less estimated costs to sell at the time of foreclosure with any excess in loan balance charged against the allowance for loan and lease losses. OREO acquired in a business acquisition is recorded at fair value on Day 1 of the acquisition. Banking premises no longer used for a specific business purpose is transferred into OREO at the lower of its carrying value or fair value less estimated costs to sell with any excess in the carrying value charged to noninterest expense. For all fair value estimates of the real estate properties, management considers a number of factors such as appraised values, estimated selling prices, and current market conditions, resulting in a Level 3 classification. Management periodically reviews the carrying value of OREO for impairment and adjusts the values as appropriate through noninterest expense. The following table presents nonfinancial assets measured at fair value on a nonrecurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value ( dollars in thousands ): Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total June 30, 2018 Other real estate owned $ — $ — $ 5,563 $ 5,563 December 31, 2017 Other real estate owned $ — $ — $ 1,204 $ 1,204 The following table is a reconciliation of the fair value measurement of other real estate owned disclosed in accordance with ASC 820 to the amount recorded on the consolidated statement of financial condition at the dates indicated (dollars in thousands) : June 30, 2018 December 31, 2017 Other real estate owned: Other real estate owned at fair value $ 5,563 $ 1,204 Estimated selling costs and other adjustments (551 ) (309 ) Other real estate owned $ 5,012 $ 895 Unobservable Inputs for Level 3 Fair Value Measurements The following tables provide information describing the unobservable inputs used in Level 3 fair value measurements at the dates indicated (dollars in thousands) : June 30, 2018 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,989 Discounted cash flows Discount rate 9% - 23% (13%) Prepayment speed 5% - 13% (11%) Mortgage derivatives - asset $ 961 Pricing model Pull-through rate 85% Mortgage derivatives - liability $ 435 Pricing model Pull-through rate 85% Impaired loans - collateral dependent $ 68,969 Third party appraisal Management discount for property type and recent market volatility 0% - 100% (3%) Other real estate owned $ 5,563 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (5%) December 31, 2017 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 4,069 Discounted cash flows Discount rate 10% - 22% (13%) Prepayment speed 4% - 13% (9%) Mortgage derivatives - asset $ 515 Pricing model Pull-through rate 84% Mortgage derivatives - liability $ 200 Pricing model Pull-through rate 84% Impaired loans - collateral dependent $ 11,804 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (9%) Other real estate owned $ 1,204 Third party appraisal Management discount for property type and recent market volatility 0% - 33% (12%) Fair Value of Financial Assets and Financial Liabilities The following table includes the estimated fair value of the Company's financial assets and financial liabilities at the dates indicated (dollars in thousands) . June 30, 2018 December 31, 2017 Fair Value Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Cash and cash equivalents Level 1 $ 238,291 $ 238,291 $ 230,877 $ 230,877 Equity securities Level 2 1,515 1,515 1,515 1,515 Investment securities available-for-sale Level 2 835,670 835,670 872,455 872,455 Investment securities held-to-maturity Level 2 & 3 16,742 16,817 32,852 33,351 Loans held-for-sale Level 2 55,096 56,641 36,211 37,580 Loans, net Level 2 & 3 3,571,938 3,612,910 3,503,443 3,513,057 Other real estate owned Level 3 5,012 5,563 895 1,204 Interest rate swaps and caps Level 2 4,230 4,230 2,011 2,011 Mortgage derivatives Levels 2 & 3 1,013 1,013 616 616 SBA servicing rights Level 3 3,989 3,989 4,069 4,069 Accrued interest receivable Level 2 15,577 15,577 14,906 14,906 Federal Home Loan Bank stock Level 3 4,452 4,452 4,651 4,651 Liabilities: Deposits Level 2 $ 4,302,704 $ 4,301,233 $ 4,243,135 $ 4,237,883 Federal funds purchased and securities sold under agreements to repurchase Level 2 13,525 13,525 25,209 25,209 Notes payable Level 2 398 398 398 398 Interest rate swaps and caps Level 2 — — 116 116 Mortgage derivatives Levels 2 & 3 699 699 238 238 Accrued interest payable Level 2 3,623 3,623 3,750 3,750 The fair value of financial instruments not measured at fair value on a recurring or nonrecurring basis are measured using an exit price notion for periods beginning after January 1, 2018. Prior to January 1, 2018, fair value for such instruments was estimated primarily based on the net present value of future cash flows.

Earnings Per Share

Earnings Per Share	6 Months Ended
Earnings Per Share	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 13: EARNINGS PER SHARE The Company has granted stock compensation awards with nonforfeitable dividend rights which are considered participating securities. As such, earnings per share is calculated using the two-class method. Basic earnings per share is calculated by dividing net income allocated to common shareholders by the weighted average number of common shares outstanding during the period which excludes the participating securities. Diluted earnings per share includes the dilutive effect of additional potential common shares from stock compensation awards and warrants. There were no anti-dilutive securities excluded from the computation of earnings per share in the periods presented. Earnings per share have been computed based on the following weighted average number of common shares outstanding (dollars in thousands, except per share data) : Three Months Ended Six Months Ended June 30 June 30 2018 2017 2018 2017 Numerator: Net income per consolidated statements of income $ 18,767 $ 15,203 $ 36,132 $ 26,761 Net income allocated to participating securities (509 ) (413 ) (943 ) (706 ) Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Basic earnings per share computation: Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Weighted average common shares outstanding, including shares considered participating securities 39,098,445 38,955,513 39,053,840 38,908,102 Less: Average participating securities (1,060,264 ) (1,059,388 ) (1,018,729 ) (1,026,103 ) Weighted average shares 38,038,181 37,896,125 38,035,111 37,881,999 Basic earnings per share $ .48 $ .39 $ .93 $ .69 Diluted earnings per share computation: Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Weighted average common shares outstanding for basic earnings per share 38,038,181 37,896,125 38,035,111 37,881,999 Weighted average dilutive grants 36,925 46,358 37,808 52,188 Weighted average shares and dilutive potential common shares 38,075,106 37,942,483 38,072,919 37,934,187 Diluted earnings per share $ .48 $ .39 $ .92 $ .69

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
Accumulated Other Comprehensive Income	Jun. 30, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	NOTE 14: ACCUMULATED OTHER COMPREHENSIVE INCOME Accumulated other comprehensive income, or AOCI, is reported as a component of shareholders' equity. AOCI can include, among other items, unrealized holding gains and losses on investment securities available-for-sale, unrealized gains and losses on investment securities available-for-sale transferred to held-to-maturity, and gains and losses on derivative instruments that are designated as, and qualify as, cash flow hedges. Unrealized holding gains and losses on securities transferred to held-to-maturity are amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization/accretion of the net premium/discount created in the transfer. The components of AOCI are reported net of related tax effects. The components of AOCI and changes in those components for the periods presented are as follows (dollars in thousands) : Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total Three Months Ended June 30, 2018 Balance, beginning of period $ (7,973 ) $ 47 $ — $ (7,926 ) Other comprehensive loss before income taxes: Net change in unrealized losses (2,184 ) — — (2,184 ) Amounts reclassified for net gains realized and included in earnings (250 ) — — (250 ) Transfer of unrealized gain from held-to-maturity to available-for-sale — (51 ) — (51 ) Amortization of net unrealized losses on securities transferred to held-to-maturity — (3 ) — (3 ) Income tax benefit (616 ) — — (616 ) Balance, end of period $ (9,791 ) $ (7 ) $ — $ (9,798 ) June 30, 2017 Balance, beginning of period $ (1,568 ) $ (177 ) $ (802 ) $ (2,547 ) Other comprehensive income before income taxes: Net change in unrealized gains 1,089 — 21 1,110 Amounts reclassified for net (gains) losses realized and included in earnings (13 ) — 430 417 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 46 — 46 Income tax expense 413 — 172 585 Balance, end of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 ) Six Months Ended June 30, 2018 Balance, beginning of period $ (2,523 ) $ 21 $ (65 ) $ (2,567 ) Other comprehensive loss before income taxes: Net change in unrealized losses (9,060 ) — (4 ) (9,064 ) Amounts reclassified for net (gains) losses realized and included in earnings (250 ) — 91 (159 ) Transfer of unrealized gain from held-to-maturity to available-for-sale — (51 ) — (51 ) Amortization of net unrealized losses on securities transferred to-held-to-maturity — 23 — 23 Adoption of ASU 2016-01 23 — — 23 Income tax (benefit) expense (2,019 ) — 22 (1,997 ) Balance, end of period $ (9,791 ) $ (7 ) $ — $ (9,798 ) Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total June 30, 2017 Balance, beginning of period $ (1,200 ) $ (175 ) $ (1,082 ) $ (2,457 ) Other comprehensive income before income taxes: Net change in unrealized gains 514 — 80 594 Amounts reclassified for net (gains) losses realized and included in earnings (25 ) — 834 809 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 44 — 44 Income tax expense 194 — 355 549 Balance, end of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 ) Reclassifications from AOCI into income for the periods presented are as follows (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income 2018 2017 2018 2017 Investment securities available-for-sale Gain on sale of investment securities $ 250 $ 13 $ 250 $ 25 Income tax expense (63 ) (5 ) (63 ) (10 ) Net income $ 187 $ 8 $ 187 $ 15 Cash flow hedges (effective portion) Interest expense on deposits $ — $ (430 ) $ (91 ) $ (834 ) Income tax benefit — 165 23 320 Net income $ — $ (265 ) $ (68 ) $ (514 )

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
Acquisitions (Tables)	Jun. 30, 2018
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the assets acquired and liabilities assumed and the consideration payable by the Company at the acquisition date (dollars in thousands) : As Recorded by AloStar Bank of Commerce Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 91,571 $ — $ 91,571 Investment securities available-for-sale 76,436 (195 ) (a) 76,241 Loans, net 728,319 (9,763 ) (b) 718,556 Core deposit intangible — 856 (c) 856 Premises and equipment, net 507 — 507 Other assets 11,430 2,233 (d) 13,663 Total assets acquired $ 908,263 $ (6,869 ) $ 901,394 Liabilities Deposits: Noninterest-bearing $ 102,653 $ — $ 102,653 Interest-bearing 603,069 (121 ) (e) 602,948 Total deposits 705,722 (121 ) 705,601 Other liabilities 7,912 — 7,912 Total liabilities assumed 713,634 (121 ) 713,513 Net identifiable assets acquired over liabilities assumed $ 194,629 $ (6,748 ) $ 187,881 Goodwill $ — $ 7,088 $ 7,088 Net assets acquired over liabilities assumed $ 194,629 $ 340 $ 194,969 Consideration: Cash consideration payable 194,969 Fair value of total consideration transferred $ 194,969 Explanation of fair value adjustments (a) Adjustment reflects the loss on certain securities that were sold immediately following the closing that was deemed to be a more accurate representation of fair value. (b) Adjustment reflects the fair value adjustment based on the State Bank's evaluation of the acquired loan portfolio and includes the adjustment to eliminate the recorded allowance for loan and lease losses. (c) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (d) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (e) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired deposits.
Business Acquisition, Pro Forma Information	The following table presents certain pro forma information as if AloStar had been acquired on January 1, 2017 (dollars in thousands, except per share amounts) . These results combine the historical results of AloStar in the Company's consolidated statements of income and, while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2017. Merger-related costs are not included in the pro forma statements below. Six Months Ended June 30 2018 2017 Pro Forma Pro Forma Net interest income $ 110,986 $ 111,572 Net income 37,670 33,851 Earnings per share: Basic $ .96 $ .87 Diluted .96 .87
Business Acquisition, Purchased Credit Impaired Loans Acquired	The following is a summary of the purchased credit impaired loans acquired in the AloStar transaction on September 30, 2017 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 108,308 Contractual cash flows not expected to be collected (nonaccretable difference) (19,093 ) Expected cash flows at acquisition 89,215 Accretable difference (11,664 ) Basis in acquired loans at acquisition - estimated fair value $ 77,551

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
Investment Securities (Tables)	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities Available-for-Sale	The amortized cost and fair value of debt securities classified as available-for-sale are as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Debt Securities Available-for-Sale Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. Government securities $ 67,702 $ — $ 1,023 $ 66,679 $ 70,203 $ — $ 644 $ 69,559 Residential mortgage-backed securities — nonagency 96,933 2,397 98 99,232 115,639 3,183 112 118,710 Residential mortgage-backed securities — agency 557,940 111 15,081 542,970 582,845 319 7,315 575,849 Corporate securities 126,203 1,284 698 126,789 107,115 1,299 77 108,337 Total debt securities available-for-sale $ 848,778 $ 3,792 $ 16,900 $ 835,670 $ 875,802 $ 4,801 $ 8,148 $ 872,455
Held-to-maturity Securities	The amortized cost and fair value of debt securities classified as held-to-maturity are as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Debt Securities Held-to-Maturity Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Asset-backed securities $ 16,742 $ 75 $ — $ 16,817 $ 22,692 $ 259 $ — $ 22,951 Corporate securities — — — — 10,160 240 — 10,400 Total debt securities held-to-maturity $ 16,742 $ 75 $ — $ 16,817 $ 32,852 $ 499 $ — $ 33,351
Contractual Maturities of Available-for-Sale Securities	The amortized cost and estimated fair value of debt securities by contractual maturities are summarized in the tables below (dollars in thousands) : Debt Securities Available-for-Sale Distribution of Maturities (1) June 30, 2018 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: U.S. Government securities $ 18,022 $ 49,680 $ — $ — $ 67,702 Residential mortgage-backed securities — nonagency — — 306 96,627 96,933 Residential mortgage-backed securities — agency 4,806 58,866 125,239 369,029 557,940 Corporate securities 38,884 55,944 31,037 338 126,203 Total debt securities available-for-sale $ 61,712 $ 164,490 $ 156,582 $ 465,994 $ 848,778 Fair Value: U.S. Government securities $ 17,867 $ 48,812 $ — $ — $ 66,679 Residential mortgage-backed securities — nonagency — — 316 98,916 99,232 Residential mortgage-backed securities — agency 4,781 57,518 121,667 359,004 542,970 Corporate securities 38,934 55,339 31,804 712 126,789 Total debt securities available-for-sale $ 61,582 $ 161,669 $ 153,787 $ 458,632 $ 835,670 Debt Securities Held-to-Maturity Distribution of Maturities (1) June 30, 2018 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: Asset-backed securities $ — $ — $ 7,742 $ 9,000 $ 16,742 Corporate securities — — — — — Total debt securities held-to-maturity $ — $ — $ 7,742 $ 9,000 $ 16,742 Fair Value: Asset-backed securities $ — $ — $ 7,773 $ 9,044 $ 16,817 Corporate securities — — — — — Total debt securities held-to-maturity $ — $ — $ 7,773 $ 9,044 $ 16,817 (1) Actual cash flows may differ from contractual maturities as borrowers may prepay obligations without prepayment penalties.
Unrealized Losses on Investment Securities	The following tables provide information regarding debt securities with unrealized losses (dollars in thousands) : Less than 12 Months 12 Months or More Total Debt Securities Available-for-Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2018 U.S. Government securities $ 41,350 $ 634 $ 25,329 $ 389 $ 66,679 $ 1,023 Residential mortgage-backed securities — nonagency 1,924 10 4,474 88 6,398 98 Residential mortgage-backed securities — agency 322,707 7,573 215,575 7,508 538,282 15,081 Corporate securities 85,683 698 — — 85,683 698 Total temporarily impaired securities $ 451,664 $ 8,915 $ 245,378 $ 7,985 $ 697,042 $ 16,900 December 31, 2017 U.S. Government securities $ 46,625 $ 364 $ 20,436 $ 280 $ 67,061 $ 644 Residential mortgage-backed securities — nonagency 1,403 3 6,269 109 7,672 112 Residential mortgage-backed securities — agency 312,617 2,548 210,862 4,767 523,479 7,315 Corporate securities 32,495 77 — — 32,495 77 Total temporarily impaired securities $ 393,140 $ 2,992 $ 237,567 $ 5,156 $ 630,707 $ 8,148 Less than 12 Months 12 Months or More Total Debt Securities Held-to-Maturity Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses June 30, 2018 Asset-backed securities $ — $ — $ — $ — $ — $ — Total temporarily impaired securities $ — $ — $ — $ — $ — $ —
Schedule of Proceeds from Sales and Redemptions of Available for Sale Securities	Sales and calls of securities are summarized in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Debt Securities Available-For-Sale 2018 2017 2018 2017 Proceeds from sales and calls $ 4,275 $ 21,942 $ 4,275 $ 64,778 Gross gains on sales and calls $ 250 $ 89 $ 250 $ 118 Gross losses on sales and calls — (76 ) — (93 ) Net realized gains on sales and calls $ 250 $ 13 $ 250 $ 25

Loans (Tables)

Loans (Tables)	6 Months Ended
Loans (Tables)	Jun. 30, 2018
Receivables [Abstract]
Schedule of Loans	Loans, in total, are summarized as follows (dollars in thousands) : Total Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 482,134 $ 451,993 Other commercial real estate 1,216,306 1,255,002 Total commercial real estate 1,698,440 1,706,995 Residential real estate 327,790 333,086 Owner-occupied real estate 370,572 399,370 Commercial, financial & agricultural 1,105,004 973,440 Leases 36,863 52,396 Consumer 66,604 66,906 Total loans 3,605,273 3,532,193 Allowance for loan and lease losses (33,335 ) (28,750 ) Total loans, net $ 3,571,938 $ 3,503,443 Organic loans, net of related discounts, are summarized as follows (dollars in thousands) : Organic Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 454,625 $ 412,540 Other commercial real estate 947,704 949,594 Total commercial real estate 1,402,329 1,362,134 Residential real estate 222,886 196,225 Owner-occupied real estate 270,053 260,273 Commercial, financial & agricultural 666,572 430,205 Leases 36,863 52,396 Consumer 65,019 64,610 Total organic loans (1) 2,663,722 2,365,843 Allowance for loan and lease losses (26,366 ) (24,039 ) Total organic loans, net $ 2,637,356 $ 2,341,804 (1) Includes net deferred loan fees that totaled approximately $10.3 million and $9.3 million at June 30, 2018 and December 31, 2017 , respectively. Purchased non-credit impaired loans ("PNCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Non-Credit Impaired Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 14,282 $ 25,908 Other commercial real estate 194,995 218,660 Total commercial real estate 209,277 244,568 Residential real estate 72,817 96,529 Owner-occupied real estate 82,500 118,294 Commercial, financial & agricultural 426,992 529,184 Consumer 1,503 2,161 Total purchased non-credit impaired loans (1) 793,089 990,736 Allowance for loan and lease losses (2,981 ) (995 ) Total purchased non-credit impaired loans, net $ 790,108 $ 989,741 (1) Includes net discounts that totaled approximately $7.3 million and $12.7 million at June 30, 2018 and December 31, 2017 , respectively. Purchased credit impaired loans ("PCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Credit Impaired Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 13,227 $ 13,545 Other commercial real estate 73,607 86,748 Total commercial real estate 86,834 100,293 Residential real estate 32,087 40,332 Owner-occupied real estate 18,019 20,803 Commercial, financial & agricultural 11,440 14,051 Consumer 82 135 Total purchased credit impaired loans 148,462 175,614 Allowance for loan and lease losses (3,988 ) (3,716 ) Total purchased credit impaired loans, net $ 144,474 $ 171,898
Schedule of Purchased Credit Impaired Loans Rollforward	Changes in the carrying value of purchased credit impaired loans are presented in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Purchased Credit Impaired Loans 2018 2017 2018 2017 Balance, beginning of period $ 153,338 $ 149,560 $ 171,898 $ 155,573 Accretion of fair value discounts 6,595 9,228 12,541 16,905 Reductions in principal balances resulting from repayments, write-offs and foreclosures (15,657 ) (27,790 ) (39,693 ) (41,953 ) Change in the allowance for loan and lease losses on purchased credit impaired loans 198 (161 ) (272 ) 312 Balance, end of period $ 144,474 $ 130,837 $ 144,474 $ 130,837
Schedule of Changes in Accretable Discount	Changes in the value of the accretable discount on purchased credit impaired loans are presented in the following table for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Changes in Accretable Discount 2018 2017 2018 2017 Balance, beginning of period $ 57,854 $ 63,066 $ 57,927 $ 69,301 Accretion (6,595 ) (9,228 ) (12,541 ) (16,905 ) Transfers to accretable discounts and exit events, net 2,279 5,970 8,152 7,412 Balance, end of period $ 53,538 $ 59,808 $ 53,538 $ 59,808

Allowance for Loan and Lease 26

Allowance for Loan and Lease Losses (ALLL) (Tables)	6 Months Ended
Allowance for Loan and Lease Losses (ALLL) (Tables)	Jun. 30, 2018
Receivables [Abstract]
Schedule of Allowance for Loan and Lease Losses	The following tables summarize the Company's allowance for loan and lease losses for the periods indicated (dollars in thousands) : Three Months Ended June 30 2018 2017 Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Balance, beginning of period $ 24,882 $ 2,249 $ 4,186 $ 31,317 $ 21,885 $ 491 $ 4,600 $ 26,976 Charge-offs (171 ) (285 ) (35 ) (491 ) (536 ) (197 ) (214 ) (947 ) Recoveries 70 46 — 116 113 1 — 114 Net (charge-offs) recoveries (101 ) (239 ) (35 ) (375 ) (423 ) (196 ) (214 ) (833 ) Provision for loan and lease losses 1,585 971 (163 ) 2,393 1,098 372 375 1,845 Balance, end of period $ 26,366 $ 2,981 $ 3,988 $ 33,335 $ 22,560 $ 667 $ 4,761 $ 27,988 Six Months Ended June 30 2018 2017 Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Organic Loans Purchased Non-Credit Impaired Loans Purchased Credit Impaired Loans Total Balance, beginning of period $ 24,039 $ 995 $ 3,716 $ 28,750 $ 21,086 $ 439 $ 5,073 $ 26,598 Charge-offs (835 ) (325 ) (123 ) (1,283 ) (1,076 ) (245 ) (328 ) (1,649 ) Recoveries 203 64 — 267 190 2 — 192 Net (charge-offs) recoveries (632 ) (261 ) (123 ) (1,016 ) (886 ) (243 ) (328 ) (1,457 ) Provision for loan and lease losses 2,959 2,247 395 5,601 2,360 471 16 2,847 Balance, end of period $ 26,366 $ 2,981 $ 3,988 $ 33,335 $ 22,560 $ 667 $ 4,761 $ 27,988
Schedule of Allowance for Loan and Lease Losses, Organic and Purchased Credit Impaired Loans	Activity in the allowance for loan and lease losses on organic loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Organic Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Leases Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 11,932 $ 2,894 $ 2,281 $ 6,230 $ 494 $ 1,051 $ 24,882 Charge-offs (9 ) (64 ) — (46 ) (17 ) (35 ) (171 ) Recoveries 20 7 — 25 4 14 70 Provision 211 (425 ) 673 1,229 (70 ) (33 ) 1,585 Ending balance $ 12,154 $ 2,412 $ 2,954 $ 7,438 $ 411 $ 997 $ 26,366 Six Months Ended June 30, 2018 Beginning balance $ 13,037 $ 2,809 $ 2,075 $ 4,535 $ 629 $ 954 $ 24,039 Charge-offs (277 ) (212 ) — (159 ) (80 ) (107 ) (835 ) Recoveries 20 10 — 106 33 34 203 Provision (626 ) (195 ) 879 2,956 (171 ) 116 2,959 Ending balance $ 12,154 $ 2,412 $ 2,954 $ 7,438 $ 411 $ 997 $ 26,366 Three Months Ended June 30, 2017 Beginning balance $ 12,112 $ 1,666 $ 2,108 $ 4,514 $ 710 $ 775 $ 21,885 Charge-offs (187 ) (25 ) — (82 ) (135 ) (107 ) (536 ) Recoveries — 3 — 22 68 20 113 Provision 1,412 197 (72 ) (791 ) 182 170 1,098 Ending balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 Six Months Ended June 30, 2017 Beginning balance $ 11,767 $ 1,786 $ 2,239 $ 4,093 $ 655 $ 546 $ 21,086 Charge-offs (187 ) (48 ) — (142 ) (499 ) (200 ) (1,076 ) Recoveries — 6 — 51 109 24 190 Provision 1,757 97 (203 ) (339 ) 560 488 2,360 Ending balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 The following table presents the balance of organic loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Organic Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ — $ 12,154 $ 12,154 $ 3,334 $ 1,398,995 $ 1,402,329 Residential real estate — 2,412 2,412 1,350 221,536 222,886 Owner-occupied real estate — 2,954 2,954 1,456 268,597 270,053 Commercial, financial & agricultural — 7,438 7,438 5,039 661,533 666,572 Leases — 411 411 — 36,863 36,863 Consumer — 997 997 — 65,019 65,019 Total organic loans $ — $ 26,366 $ 26,366 $ 11,179 $ 2,652,543 $ 2,663,722 December 31, 2017 Commercial real estate $ — $ 13,037 $ 13,037 $ 3,822 $ 1,358,312 $ 1,362,134 Residential real estate — 2,809 2,809 49 196,176 196,225 Owner-occupied real estate 65 2,010 2,075 808 259,465 260,273 Commercial, financial & agricultural 34 4,501 4,535 280 429,925 430,205 Leases — 629 629 — 52,396 52,396 Consumer — 954 954 — 64,610 64,610 Total organic loans $ 99 $ 23,940 $ 24,039 $ 4,959 $ 2,360,884 $ 2,365,843 Activity in the allowance for loan and lease losses on purchased non-credit impaired loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 336 $ 524 $ 316 $ 1,067 $ 6 $ 2,249 Charge-offs — (36 ) (249 ) — — (285 ) Recoveries 2 2 21 20 1 46 Provision (46 ) (156 ) 353 823 (3 ) 971 Ending balance $ 292 $ 334 $ 441 $ 1,910 $ 4 $ 2,981 Six Months Ended June 30, 2018 Beginning balance $ 230 $ 664 $ 88 $ 8 $ 5 $ 995 Charge-offs — (36 ) (249 ) (37 ) (3 ) (325 ) Recoveries 7 10 21 24 2 64 Provision 55 (304 ) 581 1,915 — 2,247 Ending balance $ 292 $ 334 $ 441 $ 1,910 $ 4 $ 2,981 Three Months Ended June 30, 2017 Beginning balance $ 239 $ 175 $ 76 $ — $ 1 $ 491 Charge-offs — — (80 ) (115 ) (2 ) (197 ) Recoveries — — — — 1 1 Provision (94 ) 167 156 141 2 372 Ending balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 Six Months Ended June 30, 2017 Beginning balance $ 88 $ 72 $ 44 $ 235 $ — $ 439 Charge-offs — — (80 ) (160 ) (5 ) (245 ) Recoveries — — — — 2 2 Provision 57 270 188 (49 ) 5 471 Ending balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 The following table presents the balance of purchased non-credit impaired loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Purchased Non-Credit Impaired Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ — $ 292 $ 292 $ — $ 209,277 $ 209,277 Residential real estate — 334 334 15 72,802 72,817 Owner-occupied real estate 28 413 441 848 81,652 82,500 Commercial, financial & agricultural 782 1,128 1,910 55,166 371,826 426,992 Consumer — 4 4 — 1,503 1,503 Total purchased non-credit impaired loans $ 810 $ 2,171 $ 2,981 $ 56,029 $ 737,060 $ 793,089 December 31, 2017 Commercial real estate $ — $ 230 $ 230 $ — $ 244,568 $ 244,568 Residential real estate — 664 664 19 96,510 96,529 Owner-occupied real estate — 88 88 3,264 115,030 118,294 Commercial, financial & agricultural 8 — 8 1,491 527,693 529,184 Consumer — 5 5 — 2,161 2,161 Total purchased non-credit impaired loans $ 8 $ 987 $ 995 $ 4,774 $ 985,962 $ 990,736 Activity in the allowance for loan and lease losses on purchased credit impaired loans is detailed as follows by portfolio segment for the periods indicated (dollars in thousands) : Purchased Credit Impaired Loans Commercial Real Estate Residential Real Estate Owner-Occupied Real Estate Commercial, Financial & Agricultural Consumer Total Three Months Ended June 30, 2018 Beginning balance $ 2,304 $ 830 $ 825 $ 217 $ 10 $ 4,186 Charge-offs (1 ) (28 ) — — (6 ) (35 ) Recoveries — — — — — — Provision (131 ) (16 ) (9 ) (3 ) (4 ) (163 ) Ending balance $ 2,172 $ 786 $ 816 $ 214 $ — $ 3,988 Six Months Ended June 30, 2018 Beginning balance $ 1,706 $ 1,242 $ 718 $ 42 $ 8 $ 3,716 Charge-offs (34 ) (73 ) (10 ) — (6 ) (123 ) Recoveries — — — — — — Provision 500 (383 ) 108 172 (2 ) 395 Ending balance $ 2,172 $ 786 $ 816 $ 214 $ — $ 3,988 Three Months Ended June 30, 2017 Beginning balance $ 2,073 $ 959 $ 1,531 $ 37 $ — $ 4,600 Charge-offs (160 ) (38 ) — (15 ) (1 ) (214 ) Recoveries — — — — — — Provision 218 47 80 15 15 375 Ending balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 Six Months Ended June 30, 2017 Beginning balance $ 2,183 $ 1,196 $ 1,655 $ 38 $ 1 $ 5,073 Charge-offs (233 ) (42 ) (36 ) (16 ) (1 ) (328 ) Recoveries — — — — — — Provision 181 (186 ) (8 ) 15 14 16 Ending balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 The following table presents the balance of purchased credit impaired loans and the allowance for loan and lease losses based on the method of determining the allowance at the dates indicated (dollars in thousands) : Allowance for Loan and Lease Losses Loans Purchased Credit Impaired Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Allowance Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Loans June 30, 2018 Commercial real estate $ 996 $ 1,176 $ 2,172 $ 74,876 $ 11,958 $ 86,834 Residential real estate 68 718 786 2,262 29,825 32,087 Owner-occupied real estate 695 121 816 7,646 10,373 18,019 Commercial, financial & agricultural 8 206 214 548 10,892 11,440 Consumer — — — — 82 82 Total purchased credit impaired loans $ 1,767 $ 2,221 $ 3,988 $ 85,332 $ 63,130 $ 148,462 December 31, 2017 Commercial real estate $ 1,052 $ 654 $ 1,706 $ 79,085 $ 21,208 $ 100,293 Residential real estate 128 1,114 1,242 3,029 37,303 40,332 Owner-occupied real estate 586 132 718 9,483 11,320 20,803 Commercial, financial & agricultural 32 10 42 2,318 11,733 14,051 Consumer — 8 8 — 135 135 Total purchased credit impaired loans $ 1,798 $ 1,918 $ 3,716 $ 93,915 $ 81,699 $ 175,614
Impaired Loans, Organic and Purchased Non-Credit Impaired	Impaired loans, segregated by class of loans, are presented in the following table (dollars in thousands) : June 30, 2018 December 31, 2017 Unpaid Principal Balance Recorded Investment Related Allowance Unpaid Principal Balance Recorded Investment Related Allowance Impaired Loans (1) With no related allowance recorded: Construction, land & land development $ 75 $ 71 $ — $ 82 $ 79 $ — Other commercial real estate 3,291 3,289 — 4,617 3,822 — Total commercial real estate 3,366 3,360 — 4,699 3,901 — Residential real estate 2,491 2,340 — 453 456 — Owner-occupied real estate 1,640 1,600 — 4,172 4,015 — Commercial, financial & agricultural 61,145 58,974 — 2,739 1,882 — Consumer 39 33 — 51 40 — Subtotal 68,681 66,307 — 12,114 10,294 — With related allowance recorded: Construction, land & land development — — — 113 112 56 Other commercial real estate — — — — — — Total commercial real estate — — — 113 112 56 Residential real estate 789 741 371 1,452 1,399 699 Owner-occupied real estate 966 930 69 350 335 125 Commercial, financial & agricultural 2,949 2,858 1,465 872 821 318 Consumer 80 76 38 83 81 40 Subtotal 4,784 4,605 1,943 2,870 2,748 1,238 Total impaired loans $ 73,465 $ 70,912 $ 1,943 $ 14,984 $ 13,042 $ 1,238 (1) Includes loans with SBA guaranteed balances of $3.6 million and $5.7 million at June 30, 2018 and December 31, 2017 , respectively. The following table presents information related to the average recorded investment and interest income recognized on impaired loans, for the periods presented (dollars in thousands) : June 30, 2018 June 30, 2017 Impaired Loans Average Recorded Investment (1) Interest Income Recognized (2) Average Recorded Investment (1) Interest Income Recognized (2) Three Months Ended Construction, land & land development $ 75 $ — $ 3,458 $ — Other commercial real estate 3,312 8 51 — Total commercial real estate 3,387 8 3,509 — Residential real estate 3,873 — 1,018 — Owner-occupied real estate 2,525 — 2,788 — Commercial, financial & agricultural 57,434 661 2,682 1 Consumer 117 — 72 — Total impaired loans $ 67,336 $ 669 $ 10,069 $ 1 Six Months Ended Construction, land & land development $ 132 $ — $ 4,297 $ — Other commercial real estate 3,359 16 53 — Total commercial real estate 3,491 16 4,350 — Residential real estate 4,099 — 1,031 — Owner-occupied real estate 4,099 — 2,824 — Commercial, financial & agricultural 41,624 1,027 2,736 1 Consumer 131 — 77 — Total impaired loans $ 53,444 $ 1,043 $ 11,018 $ 1 (1) The average recorded investment for troubled debt restructurings was $6.9 million and $7.0 million for the three and six months ended June 30, 2018 , respectively, and was $3.2 million and $4.1 million for the three and six months ended June 30, 2017 , respectively. (2) The interest income recognized on troubled debt restructurings was $67,000 and $131,000 for the three and six months ended June 30, 2018 , respectively, and was $0 for both the three and six months ended June 30, 2017 .
Nonaccrual Loans, Organic and Purchased Non-Credit Impaired	The following table presents the recorded investment in nonaccrual loans by loan class at the dates indicated (dollars in thousands) : Nonaccrual Loans June 30, 2018 December 31, 2017 Construction, land & land development $ 71 $ 191 Other commercial real estate 2,799 3,257 Total commercial real estate 2,870 3,448 Residential real estate 3,081 1,855 Owner-occupied real estate 2,530 4,350 Commercial, financial & agricultural 22,114 2,703 Consumer 109 121 Total nonaccrual loans $ 30,704 $ 12,477
Past Due Loans	The following table presents an analysis of past due organic loans, by class of loans, at the dates indicated (dollars in thousands) : Organic Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Loans > 90 Days and Accruing June 30, 2018 Construction, land & land development $ 138 $ 45 $ 183 $ 454,442 $ 454,625 $ — Other commercial real estate 12 — 12 947,692 947,704 — Total commercial real estate 150 45 195 1,402,134 1,402,329 — Residential real estate 1,114 269 1,383 221,503 222,886 — Owner-occupied real estate 1,591 242 1,833 268,220 270,053 — Commercial, financial & agricultural 193 471 664 665,908 666,572 — Leases — — — 36,863 36,863 — Consumer 117 9 126 64,893 65,019 — Total organic loans $ 3,165 $ 1,036 $ 4,201 $ 2,659,521 $ 2,663,722 $ — December 31, 2017 Construction, land & land development $ 487 $ 45 $ 532 $ 412,008 $ 412,540 $ — Other commercial real estate — — — 949,594 949,594 — Total commercial real estate 487 45 532 1,361,602 1,362,134 — Residential real estate 1,868 92 1,960 194,265 196,225 — Owner-occupied real estate 474 713 1,187 259,086 260,273 — Commercial, financial & agricultural 865 122 987 429,218 430,205 — Leases — — — 52,396 52,396 — Consumer 67 28 95 64,515 64,610 — Total organic loans $ 3,761 $ 1,000 $ 4,761 $ 2,361,082 $ 2,365,843 $ — The following table presents an analysis of past due purchased non-credit impaired loans, by class of loans, at the dates indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Loans > 90 Days and Accruing June 30, 2018 Construction, land & land development $ — $ — $ — $ 14,282 $ 14,282 $ — Other commercial real estate — — — 194,995 194,995 — Total commercial real estate — — — 209,277 209,277 — Residential real estate 1,449 195 1,644 71,173 72,817 — Owner-occupied real estate 46 144 190 82,310 82,500 — Commercial, financial & agricultural 71 930 1,001 425,991 426,992 — Consumer 29 8 37 1,466 1,503 — Total purchased non-credit impaired loans $ 1,595 $ 1,277 $ 2,872 $ 790,217 $ 793,089 $ — December 31, 2017 Construction, land & land development $ 35 $ — $ 35 $ 25,873 $ 25,908 $ — Other commercial real estate — 45 45 218,615 218,660 — Total commercial real estate 35 45 80 244,488 244,568 — Residential real estate 537 126 663 95,866 96,529 — Owner-occupied real estate 283 1,590 1,873 116,421 118,294 — Commercial, financial & agricultural 640 628 1,268 527,916 529,184 — Consumer 28 13 41 2,120 2,161 — Total purchased non-credit impaired loans $ 1,523 $ 2,402 $ 3,925 $ 986,811 $ 990,736 $ — The following table presents an analysis of past due purchased credit impaired loans, by class of loans, at the dates indicated (dollars in thousands) : Purchased Credit Impaired Loans 30 - 89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans June 30, 2018 Construction, land & land development $ 8 $ 1,798 $ 1,806 $ 11,421 $ 13,227 Other commercial real estate 298 2,364 2,662 70,945 73,607 Total commercial real estate 306 4,162 4,468 82,366 86,834 Residential real estate 962 1,206 2,168 29,919 32,087 Owner-occupied real estate 187 598 785 17,234 18,019 Commercial, financial & agricultural — 1,414 1,414 10,026 11,440 Consumer — — — 82 82 Total purchased credit impaired loans $ 1,455 $ 7,380 $ 8,835 $ 139,627 $ 148,462 December 31, 2017 Construction, land & land development $ 1 $ 1,881 $ 1,882 $ 11,663 $ 13,545 Other commercial real estate 363 3,303 3,666 83,082 86,748 Total commercial real estate 364 5,184 5,548 94,745 100,293 Residential real estate 1,519 1,876 3,395 36,937 40,332 Owner-occupied real estate 85 786 871 19,932 20,803 Commercial, financial & agricultural 201 224 425 13,626 14,051 Consumer — 15 15 120 135 Total purchased credit impaired loans $ 2,169 $ 8,085 $ 10,254 $ 165,360 $ 175,614
Risk Grades of Loan Portfolio	The following table presents the risk grades of the organic loan portfolio, by class of loans, at the dates indicated (dollars in thousands) : Organic Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 418,587 $ 30,238 $ 5,755 $ 45 $ — $ 454,625 Other commercial real estate 904,916 37,816 2,161 2,811 — 947,704 Total commercial real estate 1,323,503 68,054 7,916 2,856 — 1,402,329 Residential real estate 215,547 4,180 311 2,848 — 222,886 Owner-occupied real estate 238,941 23,746 2,214 5,152 — 270,053 Commercial, financial & agricultural 617,246 42,647 262 6,417 — 666,572 Leases 34,481 2,382 — — — 36,863 Consumer 64,828 49 61 78 3 65,019 Total organic loans $ 2,494,546 $ 141,058 $ 10,764 $ 17,351 $ 3 $ 2,663,722 December 31, 2017 Construction, land & land development $ 371,358 $ 38,939 $ 2,086 $ 157 $ — $ 412,540 Other commercial real estate 920,168 22,229 3,365 3,832 — 949,594 Total commercial real estate 1,291,526 61,168 5,451 3,989 — 1,362,134 Residential real estate 188,918 3,668 1,488 2,151 — 196,225 Owner-occupied real estate 240,987 16,891 1,067 1,328 — 260,273 Commercial, financial & agricultural 421,114 7,870 123 1,098 — 430,205 Leases 47,908 4,488 — — — 52,396 Consumer 64,361 58 81 110 — 64,610 Total organic loans $ 2,254,814 $ 94,143 $ 8,210 $ 8,676 $ — $ 2,365,843 The following table presents the risk grades of the purchased non-credit impaired loan portfolio, by class of loans, at the dates indicated (dollars in thousands) : Purchased Non-Credit Impaired Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 14,210 $ 44 $ — $ 28 $ — $ 14,282 Other commercial real estate 155,344 35,540 3,584 527 — 194,995 Total commercial real estate 169,554 35,584 3,584 555 — 209,277 Residential real estate 69,339 1,308 294 1,802 74 72,817 Owner-occupied real estate 72,994 6,148 — 3,358 — 82,500 Commercial, financial & agricultural 321,831 49,628 15,760 39,773 — 426,992 Consumer 1,432 12 — 39 20 1,503 Total purchased non-credit impaired loans $ 635,150 $ 92,680 $ 19,638 $ 45,527 $ 94 $ 793,089 December 31, 2017 Construction, land & land development $ 25,486 $ 385 $ — $ 37 $ — $ 25,908 Other commercial real estate 214,916 1,341 1,825 578 — 218,660 Total commercial real estate 240,402 1,726 1,825 615 — 244,568 Residential real estate 92,119 2,216 791 1,369 34 96,529 Owner-occupied real estate 110,034 3,227 1,280 3,753 — 118,294 Commercial, financial & agricultural 452,822 59,306 5,223 11,833 — 529,184 Consumer 2,091 3 — 37 30 2,161 Total purchased non-credit impaired loans $ 897,468 $ 66,478 $ 9,119 $ 17,607 $ 64 $ 990,736 The following table presents the risk grades of the purchased credit impaired loan portfolio, by class of loans (dollars in thousands) : Purchased Credit Impaired Loans Pass Watch OAEM Substandard Doubtful Total June 30, 2018 Construction, land & land development $ 6,466 $ 609 $ 915 $ 5,237 $ — $ 13,227 Other commercial real estate 46,059 15,756 1,273 10,519 — 73,607 Total commercial real estate 52,525 16,365 2,188 15,756 — 86,834 Residential real estate 17,187 4,522 1,274 9,036 68 32,087 Owner-occupied real estate 6,356 3,759 791 7,113 — 18,019 Commercial, financial & agricultural 513 121 — 10,806 — 11,440 Consumer 31 24 19 8 — 82 Total purchased credit impaired loans $ 76,612 $ 24,791 $ 4,272 $ 42,719 $ 68 $ 148,462 December 31, 2017 Construction, land & land development $ 6,677 $ 809 $ 973 $ 5,086 $ — $ 13,545 Other commercial real estate 63,210 11,998 2,361 9,179 — 86,748 Total commercial real estate 69,887 12,807 3,334 14,265 — 100,293 Residential real estate 21,706 6,419 1,590 10,504 113 40,332 Owner-occupied real estate 7,181 4,896 818 7,908 — 20,803 Commercial, financial & agricultural 2,094 211 323 11,423 — 14,051 Consumer 60 28 21 26 — 135 Total purchased credit impaired loans $ 100,928 $ 24,361 $ 6,086 $ 44,126 $ 113 $ 175,614
Troubled Debt Restructurings on Financing Receivables	The following table provides information on loans that were modified as TDRs during the periods presented (dollars in thousands) : June 30, 2018 June 30, 2017 TDR Additions (1) Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Six Months Ended Construction, land & land development — $ — $ — — $ — $ — Other commercial real estate 2 2,801 2,801 — — — Total commercial real estate 2 2,801 2,801 — — — Commercial & industrial — — — — — — Owner-occupied real estate — — — — — — Residential real estate 1 2,769 2,769 — — — Consumer & Other — — — — — — Total modifications 3 $ 5,570 $ 5,570 — $ — $ — (1) The pre-modification and post-modification recorded investment amount represents the recorded investment on the date of the loan modification. Since the modifications on these loans were either an interest rate concession or payment term extension, not principal reductions, the pre-modification and post-modification recorded investment amount is the same.

SBA Servicing Rights (Tables)

SBA Servicing Rights (Tables)	6 Months Ended
SBA Servicing Rights (Tables)	Jun. 30, 2018
Transfers and Servicing [Abstract]
Schedule of Servicing Assets at Fair Value	The table below summarizes the activity in the SBA servicing rights asset for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 SBA Servicing Rights 2018 2017 2018 2017 Balance, beginning of period $ 4,003 $ 3,547 $ 4,069 $ 3,477 Additions 213 391 413 597 Fair value adjustments (227 ) (110 ) (493 ) (246 ) Balance, end of period $ 3,989 $ 3,828 $ 3,989 $ 3,828
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value	The fair value of the SBA servicing rights asset, key metrics, and the sensitivity of the fair value due to adverse changes in key economic assumptions at the periods presented are as follows (dollars in thousands) : SBA Servicing Rights June 30, 2018 December 31, 2017 Fair value $ 3,989 $ 4,069 Weighted average discount rate 12.7 % 12.9 % Decline in fair value due to a 100 basis point adverse change $ (130 ) $ (140 ) Decline in fair value due to a 200 basis point adverse change (253 ) (272 ) Prepayment speed 11.0 % 9.1 % Decline in fair value due to a 10% adverse change $ (160 ) $ (141 ) Decline in fair value due to a 20% adverse change (310 ) (275 ) Weighted average remaining life (years) 5.9 6.7
Schedule of Servicing Assets Past Due	Information about the SBA loans serviced by the Company at and for the periods presented are as follows (dollars in thousands) : June 30, 2018 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Six Months Ended June 30, 2018 Serviced for others $ 184,803 $ 557 $ — $ — Held-for-sale 15,874 — — — Held-for-investment 151,343 1,677 5,714 52 Total SBA loans serviced $ 352,020 $ 2,234 $ 5,714 $ 52 December 31, 2017 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Six Months Ended June 30, 2017 Serviced for others $ 185,557 $ 1,555 $ — $ — Held-for-sale 10,420 — — — Held-for-investment 153,810 2,508 6,627 — Total SBA loans serviced $ 349,787 $ 4,063 $ 6,627 $ —

Derivative Instruments and He28

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
Derivative Instruments and Hedging Activities (Tables)	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The table below presents the fair values of the Company's derivatives at the dates presented (dollars in thousands) : Derivative Assets (1) Derivative Liabilities (1) June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Derivatives Designated as Hedging Instruments Interest rate swaps and caps $ 4,230 $ 2,011 $ — $ 116 Total $ 4,230 $ 2,011 $ — $ 116 Derivatives Not Designated as Hedging Instruments Mortgage derivatives $ 1,013 $ 616 $ 699 $ 238 Total $ 1,013 $ 616 $ 699 $ 238 (1) All derivative assets are located in "Other Assets" on the consolidated statements of financial condition and all derivative liabilities are located in "Other Liabilities" on the consolidated statements of financial condition.
Schedule of effect of fair value and cash flow hedge accounting on the Statements of Income	The tables below presents the effect of fair value and cash flow hedge accounting on the consolidated statements of income for the periods presented (dollars in thousands) : Three Months Ended June 30 2018 2017 Interest Income Interest Expense Noninterest Income Interest Income Interest Expense Noninterest Income Total amounts of income and expense line items presented in the consolidated statements of income $ 63,688 $ 7,558 $ 10,917 $ 49,847 $ 3,369 $ 10,476 Gain (loss) on fair value hedging relationships in Subtopic 815-20 Interest rate swaps: Hedged items (588 ) — — — — 425 Derivatives designated as hedging instruments 668 — — — — (464 ) Gain (loss) on cash flow hedging relationships in Subtopic 815-20 Interest rate caps: Amount of loss reclassified from accumulated other comprehensive loss into income — — — — 430 — Six Months Ended June 30 2018 2017 Interest Income Interest Expense Noninterest Income Interest Income Interest Expense Noninterest Income Total amounts of income and expense line items presented in the consolidated statements of income $ 124,249 $ 13,263 $ 21,378 $ 97,044 $ 6,608 $ 19,935 Gain (loss) on fair value hedging relationships in Subtopic 815-20 Interest rate swaps: Hedged items (2,316 ) — — — — (83 ) Derivatives designated as hedging instruments 2,527 — — — — 32 Gain (loss) on cash flow hedging relationships in Subtopic 815-20 Interest rate caps: Amount of loss reclassified from accumulated other comprehensive loss into income — 91 — — 834 —
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The tables below presents the effect of fair value hedges on the consolidated statements of financial condition for the periods presented (dollars in thousands) : Line Item in the Statement of Financial Condition in Which the Hedged Item Is Included Carrying Amount of the Hedged Asset Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017 Loans $ 119,559 $ 139,391 $ (4,145 ) $ (1,892 ) Total $ 119,559 $ 139,391 $ (4,145 ) $ (1,892 )
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The table below presents the effect of the Company's derivatives in cash flow hedging relationships for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Interest Rate Products Location 2018 2017 2018 2017 Amount of (loss) gain recognized in AOCI on derivatives OCI $ — $ 21 $ (4 ) $ 80 Amount of loss reclassified from AOCI into income Interest expense — 430 91 834 Amount of loss recognized in consolidated statements of comprehensive income $ — $ (409 ) $ (95 ) $ (754 )
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The table below presents the effect of the Company's derivatives not designated as hedging instruments for the periods presented (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Interest Rate Products Location 2018 2017 2018 2017 Amount of loss recognized in income on interest rate swaps Noninterest income $ — $ (40 ) $ — $ (56 ) Amount of gain (loss) recognized in income on interest rate lock commitments Noninterest income 204 (284 ) 542 329 Amount of (loss) gain recognized in income on forward commitments Noninterest income (534 ) 303 (606 ) (682 ) Total (loss) gain recognized in income on derivatives not designated as hedging instruments $ (330 ) $ (21 ) $ (64 ) $ (409 )

Balance Sheet Offsetting and 29

Balance Sheet Offsetting and Repurchase Agreements (Tables)	6 Months Ended
Balance Sheet Offsetting and Repurchase Agreements (Tables)	Jun. 30, 2018
Offsetting [Abstract]
Offsetting Assets	The table below presents information about the Company’s financial instruments that are eligible for offset in the consolidated statements of financial condition at the dates presented (dollars in thousands) : Gross Amounts Recognized Gross Amounts Offset on the Statement of Financial Condition Net Amounts Presented on the Statement of Financial Condition Gross Amounts Not Offset on the Statement of Financial Condition Net Amount Financial Instruments Collateral Received/Posted (1) June 30, 2018 Offsetting Assets Interest rate swaps and caps $ 4,230 $ — $ 4,230 $ — $ (4,230 ) $ — Offsetting Liabilities Interest rate swaps and caps $ — $ — $ — $ — $ — $ — Repurchase agreements 13,525 — 13,525 — (13,525 ) — Total liabilities $ 13,525 $ — $ 13,525 $ — $ (13,525 ) $ — December 31, 2017 Offsetting Assets Interest rate swaps and caps $ 2,011 $ — $ 2,011 $ (116 ) $ (1,895 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 116 $ — $ 116 $ (116 ) $ — $ — Repurchase agreements 25,209 — 25,209 — (25,209 ) — Total liabilities $ 25,325 $ — $ 25,325 $ (116 ) $ (25,209 ) $ — (1) The application of collateral cannot reduce the net amount below zero; therefore, excess collateral received/posted is not reflected in this table. All positions are fully collateralized.
Offsetting Liabilities	The table below presents information about the Company’s financial instruments that are eligible for offset in the consolidated statements of financial condition at the dates presented (dollars in thousands) : Gross Amounts Recognized Gross Amounts Offset on the Statement of Financial Condition Net Amounts Presented on the Statement of Financial Condition Gross Amounts Not Offset on the Statement of Financial Condition Net Amount Financial Instruments Collateral Received/Posted (1) June 30, 2018 Offsetting Assets Interest rate swaps and caps $ 4,230 $ — $ 4,230 $ — $ (4,230 ) $ — Offsetting Liabilities Interest rate swaps and caps $ — $ — $ — $ — $ — $ — Repurchase agreements 13,525 — 13,525 — (13,525 ) — Total liabilities $ 13,525 $ — $ 13,525 $ — $ (13,525 ) $ — December 31, 2017 Offsetting Assets Interest rate swaps and caps $ 2,011 $ — $ 2,011 $ (116 ) $ (1,895 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 116 $ — $ 116 $ (116 ) $ — $ — Repurchase agreements 25,209 — 25,209 — (25,209 ) — Total liabilities $ 25,325 $ — $ 25,325 $ (116 ) $ (25,209 ) $ — (1) The application of collateral cannot reduce the net amount below zero; therefore, excess collateral received/posted is not reflected in this table. All positions are fully collateralized.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
Regulatory Matters (Tables)	Jun. 30, 2018
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The minimum regulatory capital ratios and ratios to be considered well-capitalized under prompt corrective action provisions at both June 30, 2018 and December 31, 2017 are presented in the table below: Capital Ratio Requirements Minimum Requirement Well-capitalized (1) Common Equity Tier 1 (CET1) capital ratio 4.50% 6.50% Tier 1 risk-based capital ratio 6.00% 8.00% Total risk-based capital ratio 8.00% 10.00% Tier 1 leverage ratio 4.00% 5.00% (1) The prompt corrective action provisions are only applicable at the bank level. At June 30, 2018 and December 31, 2017 , the Company and State Bank exceeded all regulatory capital adequacy requirements to which they were subject. The Company's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : June 30, 2018 December 31, 2017 Actual Required Actual Required Amount Ratio Minimum Amount Amount Ratio Minimum Amount Company Common Equity Tier 1 (CET1) capital ratio $ 569,237 12.79 % $ 200,354 $ 547,822 12.61 % $ 195,433 Tier 1 risk-based capital ratio 569,237 12.79 % 267,139 547,822 12.61 % 260,578 Total risk-based capital ratio 602,572 13.53 % 356,186 576,572 13.28 % 347,437 Tier 1 leverage ratio 569,237 11.75 % 193,773 547,822 11.24 % 194,924 State Bank's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : June 30, 2018 December 31, 2017 Actual Required Actual Required Amount Ratio Minimum Amount Well Capitalized Amount Amount Ratio Minimum Amount Well Capitalized Amount State Bank Common Equity Tier 1 (CET1) capital ratio $ 494,402 11.13 % $ 199,943 $ 288,807 $ 481,135 11.10 % $ 194,972 $ 281,626 Tier 1 risk-based capital ratio 494,402 11.13 % 266,591 355,455 481,135 11.10 % 259,962 346,617 Total risk-based capital ratio 527,737 11.88 % 355,455 444,318 509,885 11.77 % 346,617 433,271 Tier 1 leverage ratio 494,402 10.21 % 193,611 242,014 481,135 9.90 % 194,429 243,037

Commitments and Contingent Li31

Commitments and Contingent Liabilities (Tables)	6 Months Ended
Commitments and Contingent Liabilities (Tables)	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Summary of Commitments	A summary of the Company's commitments is as follows (dollars in thousands) : June 30, 2018 December 31, 2017 Commitments to extend credit: Fixed $ 91,509 $ 65,117 Variable 944,668 914,524 Letters of credit: Fixed 5,759 5,978 Variable 6,895 11,428 Total commitments $ 1,048,831 $ 997,047

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
Fair Value (Tables)	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present financial assets and financial liabilities measured at fair value on a recurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : June 30, 2018 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Equity securities - financial services industry $ — $ 1,515 $ — $ 1,515 U.S. Government securities — 66,679 — 66,679 Residential mortgage-backed securities — nonagency — 99,232 — 99,232 Residential mortgage-backed securities — agency — 542,970 — 542,970 Corporate securities — 126,789 — 126,789 Hedged loans — 119,559 — 119,559 Mortgage loans held-for-sale — 39,222 — 39,222 Mortgage derivatives — 52 961 1,013 Interest rate swaps and caps — 4,230 — 4,230 SBA servicing rights — — 3,989 3,989 Total recurring assets at fair value $ — $ 998,733 $ 4,950 $ 1,003,683 Liabilities: Interest rate swaps and caps $ — $ — $ — $ — Mortgage derivatives — 264 435 699 Total recurring liabilities at fair value $ — $ 264 $ 435 $ 699 December 31, 2017 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Equity securities - financial services industry $ — $ 1,515 $ — $ 1,515 U.S. Government securities — 69,559 — 69,559 Residential mortgage-backed securities — nonagency — 118,710 — 118,710 Residential mortgage-backed securities — agency — 575,849 — 575,849 Corporate securities — 108,337 — 108,337 Hedged loans — 139,391 — 139,391 Mortgage loans held for sale — 25,791 — 25,791 Mortgage derivatives — 101 515 616 Interest rate swaps and caps — 2,011 — 2,011 SBA servicing rights — — 4,069 4,069 Total recurring assets at fair value $ — $ 1,039,749 $ 4,584 $ 1,044,333 Liabilities: Interest rate swaps and caps $ — $ 116 $ — $ 116 Mortgage derivatives — 38 200 238 Total recurring liabilities at fair value $ — $ 154 $ 200 $ 354
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	Changes in the carrying value of mortgage derivatives utilizing Level 3 inputs are presented in the following tables for the periods presented (dollars in thousands) : Three Months Ended June 30 Six Months Ended June 30 2018 2018 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 916 $ 310 $ 515 $ 200 Issuances (1) 430 430 1,031 740 Settlements and closed loans (1) (385 ) (305 ) (585 ) (505 ) Balance, end of period $ 961 $ 435 $ 961 $ 435 Three Months Ended June 30 Six Months Ended June 30 2017 2017 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 1,096 $ 465 $ 699 $ 445 Issuances (1) 362 363 1,204 828 Settlements and closed loans (1) (568 ) (443 ) (1,013 ) (888 ) Balance, end of period $ 890 $ 385 $ 890 $ 385 (1) The change in fair value, recorded as a component of "mortgage banking income" on the consolidated statements of income, was a loss of $80,000 and a gain of $211,000 for the three and six months ended June 30, 2018 , respectively. The change in fair value resulted in a loss of $126,000 and a gain of $251,000 for the three and six months ended June 30, 2017 , respectively.
Fair Value Measurements, Financial Assets Measured on a Nonrecurring Basis	The following table presents financial assets measured at fair value on a nonrecurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands) : Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total June 30, 2018 Impaired loans $ — $ — $ 68,969 $ 68,969 Total nonrecurring assets at fair value $ — $ — $ 68,969 $ 68,969 December 31, 2017 Impaired loans $ — $ — $ 11,804 $ 11,804 Total nonrecurring assets at fair value $ — $ — $ 11,804 $ 11,804
Fair Value Measurements Nonfinancial Assets Nonrecurring	The following table presents nonfinancial assets measured at fair value on a nonrecurring basis at the dates indicated, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value ( dollars in thousands ): Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total June 30, 2018 Other real estate owned $ — $ — $ 5,563 $ 5,563 December 31, 2017 Other real estate owned $ — $ — $ 1,204 $ 1,204
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table is a reconciliation of the fair value measurement of other real estate owned disclosed in accordance with ASC 820 to the amount recorded on the consolidated statement of financial condition at the dates indicated (dollars in thousands) : June 30, 2018 December 31, 2017 Other real estate owned: Other real estate owned at fair value $ 5,563 $ 1,204 Estimated selling costs and other adjustments (551 ) (309 ) Other real estate owned $ 5,012 $ 895
Fair Value Measurements Unobservable Inputs	The following tables provide information describing the unobservable inputs used in Level 3 fair value measurements at the dates indicated (dollars in thousands) : June 30, 2018 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,989 Discounted cash flows Discount rate 9% - 23% (13%) Prepayment speed 5% - 13% (11%) Mortgage derivatives - asset $ 961 Pricing model Pull-through rate 85% Mortgage derivatives - liability $ 435 Pricing model Pull-through rate 85% Impaired loans - collateral dependent $ 68,969 Third party appraisal Management discount for property type and recent market volatility 0% - 100% (3%) Other real estate owned $ 5,563 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (5%) December 31, 2017 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 4,069 Discounted cash flows Discount rate 10% - 22% (13%) Prepayment speed 4% - 13% (9%) Mortgage derivatives - asset $ 515 Pricing model Pull-through rate 84% Mortgage derivatives - liability $ 200 Pricing model Pull-through rate 84% Impaired loans - collateral dependent $ 11,804 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (9%) Other real estate owned $ 1,204 Third party appraisal Management discount for property type and recent market volatility 0% - 33% (12%)
Fair Value Measurements, Recurring and Nonrecurring	The following table includes the estimated fair value of the Company's financial assets and financial liabilities at the dates indicated (dollars in thousands) . June 30, 2018 December 31, 2017 Fair Value Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Cash and cash equivalents Level 1 $ 238,291 $ 238,291 $ 230,877 $ 230,877 Equity securities Level 2 1,515 1,515 1,515 1,515 Investment securities available-for-sale Level 2 835,670 835,670 872,455 872,455 Investment securities held-to-maturity Level 2 & 3 16,742 16,817 32,852 33,351 Loans held-for-sale Level 2 55,096 56,641 36,211 37,580 Loans, net Level 2 & 3 3,571,938 3,612,910 3,503,443 3,513,057 Other real estate owned Level 3 5,012 5,563 895 1,204 Interest rate swaps and caps Level 2 4,230 4,230 2,011 2,011 Mortgage derivatives Levels 2 & 3 1,013 1,013 616 616 SBA servicing rights Level 3 3,989 3,989 4,069 4,069 Accrued interest receivable Level 2 15,577 15,577 14,906 14,906 Federal Home Loan Bank stock Level 3 4,452 4,452 4,651 4,651 Liabilities: Deposits Level 2 $ 4,302,704 $ 4,301,233 $ 4,243,135 $ 4,237,883 Federal funds purchased and securities sold under agreements to repurchase Level 2 13,525 13,525 25,209 25,209 Notes payable Level 2 398 398 398 398 Interest rate swaps and caps Level 2 — — 116 116 Mortgage derivatives Levels 2 & 3 699 699 238 238 Accrued interest payable Level 2 3,623 3,623 3,750 3,750

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
Earnings Per Share (Tables)	Jun. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Earnings per share have been computed based on the following weighted average number of common shares outstanding (dollars in thousands, except per share data) : Three Months Ended Six Months Ended June 30 June 30 2018 2017 2018 2017 Numerator: Net income per consolidated statements of income $ 18,767 $ 15,203 $ 36,132 $ 26,761 Net income allocated to participating securities (509 ) (413 ) (943 ) (706 ) Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Basic earnings per share computation: Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Weighted average common shares outstanding, including shares considered participating securities 39,098,445 38,955,513 39,053,840 38,908,102 Less: Average participating securities (1,060,264 ) (1,059,388 ) (1,018,729 ) (1,026,103 ) Weighted average shares 38,038,181 37,896,125 38,035,111 37,881,999 Basic earnings per share $ .48 $ .39 $ .93 $ .69 Diluted earnings per share computation: Net income allocated to common stock $ 18,258 $ 14,790 $ 35,189 $ 26,055 Weighted average common shares outstanding for basic earnings per share 38,038,181 37,896,125 38,035,111 37,881,999 Weighted average dilutive grants 36,925 46,358 37,808 52,188 Weighted average shares and dilutive potential common shares 38,075,106 37,942,483 38,072,919 37,934,187 Diluted earnings per share $ .48 $ .39 $ .92 $ .69

Accumulated Other Comprehensi34

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
Accumulated Other Comprehensive Income (Tables)	Jun. 30, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income	The components of AOCI and changes in those components for the periods presented are as follows (dollars in thousands) : Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total Three Months Ended June 30, 2018 Balance, beginning of period $ (7,973 ) $ 47 $ — $ (7,926 ) Other comprehensive loss before income taxes: Net change in unrealized losses (2,184 ) — — (2,184 ) Amounts reclassified for net gains realized and included in earnings (250 ) — — (250 ) Transfer of unrealized gain from held-to-maturity to available-for-sale — (51 ) — (51 ) Amortization of net unrealized losses on securities transferred to held-to-maturity — (3 ) — (3 ) Income tax benefit (616 ) — — (616 ) Balance, end of period $ (9,791 ) $ (7 ) $ — $ (9,798 ) June 30, 2017 Balance, beginning of period $ (1,568 ) $ (177 ) $ (802 ) $ (2,547 ) Other comprehensive income before income taxes: Net change in unrealized gains 1,089 — 21 1,110 Amounts reclassified for net (gains) losses realized and included in earnings (13 ) — 430 417 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 46 — 46 Income tax expense 413 — 172 585 Balance, end of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 ) Six Months Ended June 30, 2018 Balance, beginning of period $ (2,523 ) $ 21 $ (65 ) $ (2,567 ) Other comprehensive loss before income taxes: Net change in unrealized losses (9,060 ) — (4 ) (9,064 ) Amounts reclassified for net (gains) losses realized and included in earnings (250 ) — 91 (159 ) Transfer of unrealized gain from held-to-maturity to available-for-sale — (51 ) — (51 ) Amortization of net unrealized losses on securities transferred to-held-to-maturity — 23 — 23 Adoption of ASU 2016-01 23 — — 23 Income tax (benefit) expense (2,019 ) — 22 (1,997 ) Balance, end of period $ (9,791 ) $ (7 ) $ — $ (9,798 ) Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total June 30, 2017 Balance, beginning of period $ (1,200 ) $ (175 ) $ (1,082 ) $ (2,457 ) Other comprehensive income before income taxes: Net change in unrealized gains 514 — 80 594 Amounts reclassified for net (gains) losses realized and included in earnings (25 ) — 834 809 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 44 — 44 Income tax expense 194 — 355 549 Balance, end of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 )
Reclassification out of Accumulated Other Comprehensive Income	Reclassifications from AOCI into income for the periods presented are as follows (dollars in thousands) : Three Months Ended Six Months Ended June 30 June 30 Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income 2018 2017 2018 2017 Investment securities available-for-sale Gain on sale of investment securities $ 250 $ 13 $ 250 $ 25 Income tax expense (63 ) (5 ) (63 ) (10 ) Net income $ 187 $ 8 $ 187 $ 15 Cash flow hedges (effective portion) Interest expense on deposits $ — $ (430 ) $ (91 ) $ (834 ) Income tax benefit — 165 23 320 Net income $ — $ (265 ) $ (68 ) $ (514 )

Basis of Presentation (Details)

Basis of Presentation (Details) - $ / shares	Jun. 30, 2018	May 11, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
State Bank Financial Corporation \| Cadence
Business Acquisition [Line Items]
Number of shares received by acquiree in business acquisition		1.160
Common stock, par value (in dollars per share)		$ 0.01

Adoption of New Accounting St36

Adoption of New Accounting Standards and Recent Accounting Pronouncements (Details) $ in Thousands	Dec. 31, 2017USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of ASU 2016-01	$ 23
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of ASU 2016-01	(23)
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption of ASU 2016-01	$ 23

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 30, 2017	Oct. 31, 2017	Jun. 30, 2018	Dec. 31, 2017	[1]	Sep. 29, 2017
Business Acquisition [Line Items]
Goodwill			$ 84,564	$ 84,564
AloStar Bank of Commerce
Business Acquisition [Line Items]
Conversion price per share (in dollars per share)	$ 24.26
Total consideration paid	$ 194,969	$ 195,000
Goodwill	7,088					$ 0
Purchased Non-Credit Impaired Loans \| AloStar Bank of Commerce
Business Acquisition [Line Items]
Purchased non-credit impaired loans acquired	641,000
Purchased non-credit impaired loans acquired, contractual balance	707,000
Purchased non-credit impaired loans acquired, estimated uncollectible	$ 9,300

[1]	Derived from audited financial statements

Acquisitions - Assets Acquired

Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Oct. 31, 2017	Jun. 30, 2018	Dec. 31, 2017	[1]	Sep. 29, 2017
Liabilities
Goodwill			$ 84,564	$ 84,564
AloStar Bank of Commerce
Assets
Cash and cash equivalents	$ 91,571					$ 91,571
Investment securities available-for-sale	76,241					76,436
Loans, net	718,556					728,319
Core deposit intangible	856					0
Premises and equipment, net	507					507
Other assets	13,663					11,430
Total assets acquired	901,394					908,263
Liabilities
Noninterest-bearing	102,653					102,653
Interest-bearing	602,948					603,069
Total deposits	705,601					705,722
Other liabilities	7,912					7,912
Total liabilities assumed	713,513					713,634
Net identifiable assets acquired over liabilities assumed	187,881					194,629
Goodwill	7,088					0
Net assets acquired over liabilities assumed	194,969					$ 194,629
Assets
Cash and cash equivalents	0
Investment securities available-for-sale	(195)
Loans, net	(9,763)
Core deposit intangible	856
Premises and equipment, net	0
Other assets	2,233
Total assets acquired	(6,869)
Liabilities
Noninterest-bearing	0
Interest-bearing	(121)
Total deposits	(121)
Other liabilities	0
Total liabilities assumed	(121)
Net identifiable assets acquired over liabilities assumed	(6,748)
Goodwill	7,088
Net assets acquired over liabilities assumed	340
Consideration:
Cash consideration payable	194,969
Fair value of total consideration transferred	$ 194,969	$ 195,000

[1]	Derived from audited financial statements

Acquisitions - Pro Forma Inform

Acquisitions - Pro Forma Information (Details) - AloStar Bank of Commerce - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Pro Forma
Net interest income, Pro Forma	$ 110,986	$ 111,572
Net income, Pro Forma	$ 37,670	$ 33,851
Earnings per share:
Basic (in dollars per share)	$ 0.96	$ 0.87
Diluted (in dollars per share)	$ 0.96	$ 0.87

Acquisitions - Purchased Credit

Acquisitions - Purchased Credit Impaired Loans Acquired (Details) - AloStar Bank of Commerce $ in Thousands	Sep. 30, 2017USD ($)
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	$ 108,308
Contractual cash flows not expected to be collected (nonaccretable difference)	(19,093)
Expected cash flows at acquisition	89,215
Accretable difference	(11,664)
Basis in acquired loans at acquisition - estimated fair value	$ 77,551

Investment Securities - Availa

Investment Securities - Available-for-Sale Reconciliation (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 848,778	$ 875,802
Unrealized Gains	3,792	4,801
Unrealized Losses	16,900	8,148
Fair Value	835,670	872,455	[1]
U.S. Government securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	67,702	70,203
Unrealized Gains	0	0
Unrealized Losses	1,023	644
Fair Value	66,679	69,559
Residential mortgage-backed securities — nonagency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	96,933	115,639
Unrealized Gains	2,397	3,183
Unrealized Losses	98	112
Fair Value	99,232	118,710
Residential mortgage-backed securities — agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	557,940	582,845
Unrealized Gains	111	319
Unrealized Losses	15,081	7,315
Fair Value	542,970	575,849
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	126,203	107,115
Unrealized Gains	1,284	1,299
Unrealized Losses	698	77
Fair Value	$ 126,789	$ 108,337

[1]	Derived from audited financial statements

Investment Securities - Held-t

Investment Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 16,742	$ 32,852	[1]
Unrealized Gains	75	499
Unrealized Losses	0	0
Debt securities held-to-maturity - fair value	16,817	33,351
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	16,742	22,692
Unrealized Gains	75	259
Unrealized Losses	0	0
Debt securities held-to-maturity - fair value	16,817	22,951
Corporate securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	0	10,160
Unrealized Gains	0	240
Unrealized Losses	0	0
Debt securities held-to-maturity - fair value	$ 0	$ 10,400

[1]	Derived from audited financial statements

Investment Securities - Schedu

Investment Securities - Schedule of Contractual Maturities of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	$ 61,712
Due 1-5 Years, Amortized Cost	164,490
Due 5-10 Years, Amortized Cost	156,582
Due After 10 Years, Amortized Cost	465,994
Amortized Cost	848,778	$ 875,802
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	61,582
Due 1-5 Years, Fair Value	161,669
Due 5-10 Years, Fair Value	153,787
Due After 10 Years, Fair Value	458,632
Fair Value	835,670	872,455	[1]
U.S. Government securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	18,022
Due 1-5 Years, Amortized Cost	49,680
Due 5-10 Years, Amortized Cost	0
Due After 10 Years, Amortized Cost	0
Amortized Cost	67,702	70,203
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	17,867
Due 1-5 Years, Fair Value	48,812
Due 5-10 Years, Fair Value	0
Due After 10 Years, Fair Value	0
Fair Value	66,679	69,559
Residential mortgage-backed securities — nonagency
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	0
Due 1-5 Years, Amortized Cost	0
Due 5-10 Years, Amortized Cost	306
Due After 10 Years, Amortized Cost	96,627
Amortized Cost	96,933	115,639
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	0
Due 1-5 Years, Fair Value	0
Due 5-10 Years, Fair Value	316
Due After 10 Years, Fair Value	98,916
Fair Value	99,232	118,710
Residential mortgage-backed securities — agency
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	4,806
Due 1-5 Years, Amortized Cost	58,866
Due 5-10 Years, Amortized Cost	125,239
Due After 10 Years, Amortized Cost	369,029
Amortized Cost	557,940	582,845
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	4,781
Due 1-5 Years, Fair Value	57,518
Due 5-10 Years, Fair Value	121,667
Due After 10 Years, Fair Value	359,004
Fair Value	542,970	575,849
Corporate securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	38,884
Due 1-5 Years, Amortized Cost	55,944
Due 5-10 Years, Amortized Cost	31,037
Due After 10 Years, Amortized Cost	338
Amortized Cost	126,203	107,115
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	38,934
Due 1-5 Years, Fair Value	55,339
Due 5-10 Years, Fair Value	31,804
Due After 10 Years, Fair Value	712
Fair Value	$ 126,789	$ 108,337

[1]	Derived from audited financial statements

Investment Securities - Held44

Investment Securities - Held-to-maturity Security Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost:
1 Year or Less	$ 0
1-5 Years	0
5-10 Years	7,742
After 10 Years	9,000
Amortized Cost	16,742	$ 32,852	[1]
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	7,773
After 10 Years	9,044
Total debt securities held-to-maturity	16,817	33,351
Asset-backed securities
Amortized Cost:
1 Year or Less	0
1-5 Years	0
5-10 Years	7,742
After 10 Years	9,000
Amortized Cost	16,742	22,692
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	7,773
After 10 Years	9,044
Total debt securities held-to-maturity	16,817	22,951
Corporate securities
Amortized Cost:
1 Year or Less	0
1-5 Years	0
5-10 Years	0
After 10 Years	0
Amortized Cost	0	10,160
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	0
After 10 Years	0
Total debt securities held-to-maturity	$ 0	$ 10,400

[1]	Derived from audited financial statements

Investment Securities - Summar

Investment Securities - Summary of Gross Unrealized Losses and Fair Value of Investments with Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 451,664	$ 393,140
Less than 12 Months, Unrealized Losses	8,915	2,992
12 Months or More, Fair Value	245,378	237,567
12 Months or More, Unrealized Losses	7,985	5,156
Total, Fair Value	697,042	630,707
Total, Unrealized Losses	16,900	8,148
U.S. Government securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	41,350	46,625
Less than 12 Months, Unrealized Losses	634	364
12 Months or More, Fair Value	25,329	20,436
12 Months or More, Unrealized Losses	389	280
Total, Fair Value	66,679	67,061
Total, Unrealized Losses	1,023	644
Residential mortgage-backed securities — nonagency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,924	1,403
Less than 12 Months, Unrealized Losses	10	3
12 Months or More, Fair Value	4,474	6,269
12 Months or More, Unrealized Losses	88	109
Total, Fair Value	6,398	7,672
Total, Unrealized Losses	98	112
Residential mortgage-backed securities — agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	322,707	312,617
Less than 12 Months, Unrealized Losses	7,573	2,548
12 Months or More, Fair Value	215,575	210,862
12 Months or More, Unrealized Losses	7,508	4,767
Total, Fair Value	538,282	523,479
Total, Unrealized Losses	15,081	7,315
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	85,683	32,495
Less than 12 Months, Unrealized Losses	698	77
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total, Fair Value	85,683	32,495
Total, Unrealized Losses	$ 698	$ 77

Investment Securities - Held46

Investment Securities - Held-to-maturity Securities, Continuous Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2018USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	$ 0
Less than 12 months, Unrealized Losses	0
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Total, Fair Value	0
Total, Unrealized Losses	0
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	0
Less than 12 months, Unrealized Losses	0
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Total, Fair Value	0
Total, Unrealized Losses	$ 0

Investment Securities - Narrat

Investment Securities - Narrative (Details) $ in Millions	3 Months Ended
Investment Securities - Narrative (Details) $ in Millions	Jun. 30, 2018USD ($)investment_security	Dec. 31, 2017USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of investments in unrealized loss position (investment securities) \| investment_security	155
Corporate security transferred from held-to-maturity to available-for-sale	$ 10.1
Available-for-sale securities, sold at par value	4
Available-for-sale securities pledged as collateral	$ 103.9	$ 116.1

Investment Securities - Gains

Investment Securities - Gains and Losses on Investment Securities Available-for-Sale (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales and calls	$ 4,275	$ 21,942	$ 4,275	$ 64,778
Gross gains on sales and calls	250	89	250	118
Gross losses on sales and calls	0	(76)	0	(93)
Net realized gains on sales and calls	$ 250	$ 13	$ 250	$ 25

Loans - Summary (Details)

Loans - Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 3,605,273		$ 3,532,193
Allowance for loan and lease losses	(33,335)	$ (31,317)	(28,750)	[1]	$ (27,988)	$ (26,976)	$ (26,598)
Loans, net	3,571,938		3,503,443	[1]
Total commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,698,440		1,706,995
Total commercial real estate \| Construction, land & land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	482,134		451,993
Total commercial real estate \| Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,216,306		1,255,002
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	327,790		333,086
Owner-occupied real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	370,572		399,370
Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,105,004		973,440
Leases
Loans and Leases Receivable Disclosure [Line Items]
Loans	36,863		52,396
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 66,604		$ 66,906

[1]	Derived from audited financial statements

Loans - Organic (Details)

Loans - Organic (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans
Loans	$ 3,605,273		$ 3,532,193
Allowance for loan and lease losses	(33,335)	$ (31,317)	(28,750)	[1]	$ (27,988)	$ (26,976)	$ (26,598)
Loans, net	3,571,938		3,503,443	[1]
Net deferred loan fees	10,300		9,300
Total commercial real estate
Loans
Loans	1,698,440		1,706,995
Total commercial real estate \| Construction, land & land development
Loans
Loans	482,134		451,993
Total commercial real estate \| Other commercial real estate
Loans
Loans	1,216,306		1,255,002
Residential real estate
Loans
Loans	327,790		333,086
Owner-occupied real estate
Loans
Loans	370,572		399,370
Commercial, financial & agricultural
Loans
Loans	1,105,004		973,440
Leases
Loans
Loans	36,863		52,396
Consumer
Loans
Loans	66,604		66,906
Organic Loans
Loans
Loans	2,663,722		2,365,843
Allowance for loan and lease losses	(26,366)	(24,882)	(24,039)		(22,560)	(21,885)	(21,086)
Loans, net	2,637,356		2,341,804
Organic Loans \| Total commercial real estate
Loans
Loans	1,402,329		1,362,134
Allowance for loan and lease losses	(12,154)	(11,932)	(13,037)		(13,337)	(12,112)	(11,767)
Organic Loans \| Total commercial real estate \| Construction, land & land development
Loans
Loans	454,625		412,540
Organic Loans \| Total commercial real estate \| Other commercial real estate
Loans
Loans	947,704		949,594
Organic Loans \| Residential real estate
Loans
Loans	222,886		196,225
Allowance for loan and lease losses	(2,412)	(2,894)	(2,809)		(1,841)	(1,666)	(1,786)
Organic Loans \| Owner-occupied real estate
Loans
Loans	270,053		260,273
Allowance for loan and lease losses	(2,954)	(2,281)	(2,075)		(2,036)	(2,108)	(2,239)
Organic Loans \| Commercial, financial & agricultural
Loans
Loans	666,572		430,205
Allowance for loan and lease losses	(7,438)	(6,230)	(4,535)		(3,663)	(4,514)	(4,093)
Organic Loans \| Leases
Loans
Loans	36,863		52,396
Allowance for loan and lease losses	(411)	(494)	(629)		(825)	(710)	(655)
Organic Loans \| Consumer
Loans
Loans	65,019		64,610
Allowance for loan and lease losses	$ (997)	$ (1,051)	$ (954)		$ (858)	$ (775)	$ (546)

[1]	Derived from audited financial statements

Loans - Purchased Non-Credit I

Loans - Purchased Non-Credit Impaired (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans
Loans	$ 3,605,273		$ 3,532,193
Allowance for loan and lease losses	(33,335)	$ (31,317)	(28,750)	[1]	$ (27,988)	$ (26,976)	$ (26,598)
Loans, net	3,571,938		3,503,443	[1]
Net discounts	7,300		12,700
Total commercial real estate
Loans
Loans	1,698,440		1,706,995
Residential real estate
Loans
Loans	327,790		333,086
Owner-occupied real estate
Loans
Loans	370,572		399,370
Commercial, financial & agricultural
Loans
Loans	1,105,004		973,440
Consumer
Loans
Loans	66,604		66,906
Construction, land & land development \| Total commercial real estate
Loans
Loans	482,134		451,993
Other commercial real estate \| Total commercial real estate
Loans
Loans	1,216,306		1,255,002
Purchased Non-Credit Impaired Loans
Loans
Loans	793,089		990,736
Allowance for loan and lease losses	(2,981)	(2,249)	(995)		(667)	(491)	(439)
Loans, net	790,108		989,741
Purchased Non-Credit Impaired Loans \| Total commercial real estate
Loans
Loans	209,277		244,568
Allowance for loan and lease losses	(292)	(336)	(230)		(145)	(239)	(88)
Purchased Non-Credit Impaired Loans \| Residential real estate
Loans
Loans	72,817		96,529
Allowance for loan and lease losses	(334)	(524)	(664)		(342)	(175)	(72)
Purchased Non-Credit Impaired Loans \| Owner-occupied real estate
Loans
Loans	82,500		118,294
Allowance for loan and lease losses	(441)	(316)	(88)		(152)	(76)	(44)
Purchased Non-Credit Impaired Loans \| Commercial, financial & agricultural
Loans
Loans	426,992		529,184
Allowance for loan and lease losses	(1,910)	(1,067)	(8)		(26)	0	(235)
Purchased Non-Credit Impaired Loans \| Consumer
Loans
Loans	1,503		2,161
Allowance for loan and lease losses	(4)	$ (6)	(5)		$ (2)	$ (1)	$ 0
Purchased Non-Credit Impaired Loans \| Construction, land & land development \| Total commercial real estate
Loans
Loans	14,282		25,908
Purchased Non-Credit Impaired Loans \| Other commercial real estate \| Total commercial real estate
Loans
Loans	$ 194,995		$ 218,660

[1]	Derived from audited financial statements

Loans - Purchased Credit Impai

Loans - Purchased Credit Impaired (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans
Loans	$ 3,605,273		$ 3,532,193
Allowance for loan and lease losses	(33,335)	$ (31,317)	(28,750)	[1]	$ (27,988)	$ (26,976)	$ (26,598)
Loans, net	3,571,938		3,503,443	[1]
Total commercial real estate
Loans
Loans	1,698,440		1,706,995
Residential real estate
Loans
Loans	327,790		333,086
Owner-occupied real estate
Loans
Loans	370,572		399,370
Commercial, financial & agricultural
Loans
Loans	1,105,004		973,440
Consumer
Loans
Loans	66,604		66,906
Construction, land & land development \| Total commercial real estate
Loans
Loans	482,134		451,993
Other commercial real estate \| Total commercial real estate
Loans
Loans	1,216,306		1,255,002
Purchased Credit Impaired Loans
Loans
Loans	148,462		175,614
Allowance for loan and lease losses	(3,988)	(4,186)	(3,716)		(4,761)	(4,600)	(5,073)
Loans, net	144,474		171,898
Purchased Credit Impaired Loans \| Total commercial real estate
Loans
Loans	86,834		100,293
Allowance for loan and lease losses	(2,172)	(2,304)	(1,706)		(2,131)	(2,073)	(2,183)
Purchased Credit Impaired Loans \| Residential real estate
Loans
Loans	32,087		40,332
Allowance for loan and lease losses	(786)	(830)	(1,242)		(968)	(959)	(1,196)
Purchased Credit Impaired Loans \| Owner-occupied real estate
Loans
Loans	18,019		20,803
Allowance for loan and lease losses	(816)	(825)	(718)		(1,611)	(1,531)	(1,655)
Purchased Credit Impaired Loans \| Commercial, financial & agricultural
Loans
Loans	11,440		14,051
Allowance for loan and lease losses	(214)	(217)	(42)		(37)	(37)	(38)
Purchased Credit Impaired Loans \| Consumer
Loans
Loans	82		135
Allowance for loan and lease losses	0	$ (10)	(8)		$ (14)	$ 0	$ (1)
Purchased Credit Impaired Loans \| Construction, land & land development \| Total commercial real estate
Loans
Loans	13,227		13,545
Purchased Credit Impaired Loans \| Other commercial real estate \| Total commercial real estate
Loans
Loans	$ 73,607		$ 86,748

[1]	Derived from audited financial statements

Loans - Changes in Carrying Va

Loans - Changes in Carrying Values of Purchased Credit Impaired Loans (Details) - Purchased Credit Impaired Loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Changes in Carrying Value of Purchased Credit Impaired Loans
Balance, beginning of period	$ 153,338	$ 149,560	$ 171,898	$ 155,573
Accretion of fair value discounts	6,595	9,228	12,541	16,905
Reductions in principal balances resulting from repayments, write-offs and foreclosures	(15,657)	(27,790)	(39,693)	(41,953)
Change in the allowance for loan and lease losses on purchased credit impaired loans	198	(161)	(272)	312
Balance, end of period	$ 144,474	$ 130,837	$ 144,474	$ 130,837

Loans - Changes in Accretable

Loans - Changes in Accretable Discount (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Changes in Accretable Discount
Balance, beginning of period	$ 57,854	$ 63,066	$ 57,927	$ 69,301
Accretion	(6,595)	(9,228)	(12,541)	(16,905)
Transfers to accretable discounts and exit events, net	2,279	5,970	8,152	7,412
Balance, end of period	$ 53,538	$ 59,808	$ 53,538	$ 59,808

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Loans pledged as collateral	$ 3,100,000	$ 3,100,000
Consumer mortgage loans secured by residential real estate in process of foreclosure	$ 104

Allowance for Loan and Lease 56

Allowance for Loan and Lease Losses (ALLL) - Allowance for Loan Losses Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 31,317	$ 26,976	$ 28,750	[1]	$ 26,598
Charge-offs	(491)	(947)	(1,283)		(1,649)
Recoveries	116	114	267		192
Net (charge-offs) recoveries	(375)	(833)	(1,016)		(1,457)
Provision for loan and lease losses	2,393	1,845	5,601		2,847
Balance, end of period	33,335	27,988	33,335		27,988
Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	24,882	21,885	24,039		21,086
Charge-offs	(171)	(536)	(835)		(1,076)
Recoveries	70	113	203		190
Net (charge-offs) recoveries	(101)	(423)	(632)		(886)
Provision for loan and lease losses	1,585	1,098	2,959		2,360
Balance, end of period	26,366	22,560	26,366		22,560
Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,249	491	995		439
Charge-offs	(285)	(197)	(325)		(245)
Recoveries	46	1	64		2
Net (charge-offs) recoveries	(239)	(196)	(261)		(243)
Provision for loan and lease losses	971	372	2,247		471
Balance, end of period	2,981	667	2,981		667
Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,186	4,600	3,716		5,073
Charge-offs	(35)	(214)	(123)		(328)
Recoveries	0	0	0		0
Net (charge-offs) recoveries	(35)	(214)	(123)		(328)
Provision for loan and lease losses	(163)	375	395		16
Balance, end of period	$ 3,988	$ 4,761	$ 3,988		$ 4,761

[1]	Derived from audited financial statements

Allowance for Loan and Lease 57

Allowance for Loan and Lease Losses (ALLL) - Organic Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 31,317	$ 26,976	$ 28,750	[1]	$ 26,598
Charge-offs	(491)	(947)	(1,283)		(1,649)
Recoveries	116	114	267		192
Provision	2,393	1,845	5,601		2,847
Balance, end of period	33,335	27,988	33,335		27,988
Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	24,882	21,885	24,039		21,086
Charge-offs	(171)	(536)	(835)		(1,076)
Recoveries	70	113	203		190
Provision	1,585	1,098	2,959		2,360
Balance, end of period	26,366	22,560	26,366		22,560
Allowance attributable to loans, Individually evaluated for impairment	0		0			$ 99
Allowance attributable to loans, Collectively evaluated for impairment	26,366		26,366			23,940
Loans individually evaluated for impairment	11,179		11,179			4,959
Loans collectively evaluated for impairment	2,652,543		2,652,543			2,360,884
Total Loans	2,663,722		2,663,722			2,365,843
Total commercial real estate \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	11,932	12,112	13,037		11,767
Charge-offs	(9)	(187)	(277)		(187)
Recoveries	20	0	20		0
Provision	211	1,412	(626)		1,757
Balance, end of period	12,154	13,337	12,154		13,337
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	12,154		12,154			13,037
Loans individually evaluated for impairment	3,334		3,334			3,822
Loans collectively evaluated for impairment	1,398,995		1,398,995			1,358,312
Total Loans	1,402,329		1,402,329			1,362,134
Residential real estate \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,894	1,666	2,809		1,786
Charge-offs	(64)	(25)	(212)		(48)
Recoveries	7	3	10		6
Provision	(425)	197	(195)		97
Balance, end of period	2,412	1,841	2,412		1,841
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	2,412		2,412			2,809
Loans individually evaluated for impairment	1,350		1,350			49
Loans collectively evaluated for impairment	221,536		221,536			196,176
Total Loans	222,886		222,886			196,225
Owner-occupied real estate \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,281	2,108	2,075		2,239
Charge-offs	0	0	0		0
Recoveries	0	0	0		0
Provision	673	(72)	879		(203)
Balance, end of period	2,954	2,036	2,954		2,036
Allowance attributable to loans, Individually evaluated for impairment	0		0			65
Allowance attributable to loans, Collectively evaluated for impairment	2,954		2,954			2,010
Loans individually evaluated for impairment	1,456		1,456			808
Loans collectively evaluated for impairment	268,597		268,597			259,465
Total Loans	270,053		270,053			260,273
Commercial, financial & agricultural \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	6,230	4,514	4,535		4,093
Charge-offs	(46)	(82)	(159)		(142)
Recoveries	25	22	106		51
Provision	1,229	(791)	2,956		(339)
Balance, end of period	7,438	3,663	7,438		3,663
Allowance attributable to loans, Individually evaluated for impairment	0		0			34
Allowance attributable to loans, Collectively evaluated for impairment	7,438		7,438			4,501
Loans individually evaluated for impairment	5,039		5,039			280
Loans collectively evaluated for impairment	661,533		661,533			429,925
Total Loans	666,572		666,572			430,205
Leases \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	494	710	629		655
Charge-offs	(17)	(135)	(80)		(499)
Recoveries	4	68	33		109
Provision	(70)	182	(171)		560
Balance, end of period	411	825	411		825
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	411		411			629
Loans individually evaluated for impairment	0		0			0
Loans collectively evaluated for impairment	36,863		36,863			52,396
Total Loans	36,863		36,863			52,396
Consumer \| Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,051	775	954		546
Charge-offs	(35)	(107)	(107)		(200)
Recoveries	14	20	34		24
Provision	(33)	170	116		488
Balance, end of period	997	$ 858	997		$ 858
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	997		997			954
Loans individually evaluated for impairment	0		0			0
Loans collectively evaluated for impairment	65,019		65,019			64,610
Total Loans	$ 65,019		$ 65,019			$ 64,610

[1]	Derived from audited financial statements

Allowance for Loan and Lease 58

Allowance for Loan and Lease Losses (ALLL) - Purchased Non-Credit Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 31,317	$ 26,976	$ 28,750	[1]	$ 26,598
Charge-offs	(491)	(947)	(1,283)		(1,649)
Recoveries	116	114	267		192
Provision	2,393	1,845	5,601		2,847
Balance, end of period	33,335	27,988	33,335		27,988
Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,249	491	995		439
Charge-offs	(285)	(197)	(325)		(245)
Recoveries	46	1	64		2
Provision	971	372	2,247		471
Balance, end of period	2,981	667	2,981		667
Allowance attributable to loans, Individually evaluated for impairment	810		810			$ 8
Allowance attributable to loans, Collectively evaluated for impairment	2,171		2,171			987
Loans individually evaluated for impairment	56,029		56,029			4,774
Loans collectively evaluated for impairment	737,060		737,060			985,962
Total Loans	793,089		793,089			990,736
Commercial real estate \| Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	336	239	230		88
Charge-offs	0	0	0		0
Recoveries	2	0	7		0
Provision	(46)	(94)	55		57
Balance, end of period	292	145	292		145
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	292		292			230
Loans individually evaluated for impairment	0		0			0
Loans collectively evaluated for impairment	209,277		209,277			244,568
Total Loans	209,277		209,277			244,568
Residential real estate \| Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	524	175	664		72
Charge-offs	(36)	0	(36)		0
Recoveries	2	0	10		0
Provision	(156)	167	(304)		270
Balance, end of period	334	342	334		342
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	334		334			664
Loans individually evaluated for impairment	15		15			19
Loans collectively evaluated for impairment	72,802		72,802			96,510
Total Loans	72,817		72,817			96,529
Owner-occupied real estate \| Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	316	76	88		44
Charge-offs	(249)	(80)	(249)		(80)
Recoveries	21	0	21		0
Provision	353	156	581		188
Balance, end of period	441	152	441		152
Allowance attributable to loans, Individually evaluated for impairment	28		28			0
Allowance attributable to loans, Collectively evaluated for impairment	413		413			88
Loans individually evaluated for impairment	848		848			3,264
Loans collectively evaluated for impairment	81,652		81,652			115,030
Total Loans	82,500		82,500			118,294
Commercial, financial & agricultural \| Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,067	0	8		235
Charge-offs	0	(115)	(37)		(160)
Recoveries	20	0	24		0
Provision	823	141	1,915		(49)
Balance, end of period	1,910	26	1,910		26
Allowance attributable to loans, Individually evaluated for impairment	782		782			8
Allowance attributable to loans, Collectively evaluated for impairment	1,128		1,128			0
Loans individually evaluated for impairment	55,166		55,166			1,491
Loans collectively evaluated for impairment	371,826		371,826			527,693
Total Loans	426,992		426,992			529,184
Consumer \| Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	6	1	5		0
Charge-offs	0	(2)	(3)		(5)
Recoveries	1	1	2		2
Provision	(3)	2	0		5
Balance, end of period	4	$ 2	4		$ 2
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	4		4			5
Loans individually evaluated for impairment	0		0			0
Loans collectively evaluated for impairment	1,503		1,503			2,161
Total Loans	$ 1,503		$ 1,503			$ 2,161

[1]	Derived from audited financial statements

Allowance for Loan and Lease 59

Allowance for Loan and Lease Losses (ALLL) - Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 31,317	$ 26,976	$ 28,750	[1]	$ 26,598
Charge-offs	(491)	(947)	(1,283)		(1,649)
Recoveries	116	114	267		192
Provision for loan and lease losses	2,393	1,845	5,601		2,847
Balance, end of period	33,335	27,988	33,335		27,988
Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,186	4,600	3,716		5,073
Charge-offs	(35)	(214)	(123)		(328)
Recoveries	0	0	0		0
Provision for loan and lease losses	(163)	375	395		16
Balance, end of period	3,988	4,761	3,988		4,761
Allowance attributable to loans, Individually evaluated for impairment	1,767		1,767			$ 1,798
Allowance attributable to loans, Collectively evaluated for impairment	2,221		2,221			1,918
Loans individually evaluated for impairment	85,332		85,332			93,915
Loans collectively evaluated for impairment	63,130		63,130			81,699
Total Loans	148,462		148,462			175,614
Total commercial real estate \| Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,304	2,073	1,706		2,183
Charge-offs	(1)	(160)	(34)		(233)
Recoveries	0	0	0		0
Provision for loan and lease losses	(131)	218	500		181
Balance, end of period	2,172	2,131	2,172		2,131
Allowance attributable to loans, Individually evaluated for impairment	996		996			1,052
Allowance attributable to loans, Collectively evaluated for impairment	1,176		1,176			654
Loans individually evaluated for impairment	74,876		74,876			79,085
Loans collectively evaluated for impairment	11,958		11,958			21,208
Total Loans	86,834		86,834			100,293
Residential real estate \| Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	830	959	1,242		1,196
Charge-offs	(28)	(38)	(73)		(42)
Recoveries	0	0	0		0
Provision for loan and lease losses	(16)	47	(383)		(186)
Balance, end of period	786	968	786		968
Allowance attributable to loans, Individually evaluated for impairment	68		68			128
Allowance attributable to loans, Collectively evaluated for impairment	718		718			1,114
Loans individually evaluated for impairment	2,262		2,262			3,029
Loans collectively evaluated for impairment	29,825		29,825			37,303
Total Loans	32,087		32,087			40,332
Owner-occupied real estate \| Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	825	1,531	718		1,655
Charge-offs	0	0	(10)		(36)
Recoveries	0	0	0		0
Provision for loan and lease losses	(9)	80	108		(8)
Balance, end of period	816	1,611	816		1,611
Allowance attributable to loans, Individually evaluated for impairment	695		695			586
Allowance attributable to loans, Collectively evaluated for impairment	121		121			132
Loans individually evaluated for impairment	7,646		7,646			9,483
Loans collectively evaluated for impairment	10,373		10,373			11,320
Total Loans	18,019		18,019			20,803
Commercial, financial & agricultural \| Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	217	37	42		38
Charge-offs	0	(15)	0		(16)
Recoveries	0	0	0		0
Provision for loan and lease losses	(3)	15	172		15
Balance, end of period	214	37	214		37
Allowance attributable to loans, Individually evaluated for impairment	8		8			32
Allowance attributable to loans, Collectively evaluated for impairment	206		206			10
Loans individually evaluated for impairment	548		548			2,318
Loans collectively evaluated for impairment	10,892		10,892			11,733
Total Loans	11,440		11,440			14,051
Consumer \| Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	10	0	8		1
Charge-offs	(6)	(1)	(6)		(1)
Recoveries	0	0	0		0
Provision for loan and lease losses	(4)	15	(2)		14
Balance, end of period	0	$ 14	0		$ 14
Allowance attributable to loans, Individually evaluated for impairment	0		0			0
Allowance attributable to loans, Collectively evaluated for impairment	0		0			8
Loans individually evaluated for impairment	0		0			0
Loans collectively evaluated for impairment	82		82			135
Total Loans	$ 82		$ 82			$ 135

[1]	Derived from audited financial statements

Allowance for Loan and Lease 60

Allowance for Loan and Lease Losses (ALLL) - Organic Impaired Loans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	$ 68,681,000		$ 68,681,000		$ 12,114,000
Recorded Investment with No Related Allowance	66,307,000		66,307,000		10,294,000
Unpaid Principal Balance with Related Allowance	4,784,000		4,784,000		2,870,000
Recorded Investment with Related Allowance	4,605,000		4,605,000		2,748,000
Impaired financing receivable, related allowance	1,943,000		1,943,000		1,238,000
Unpaid Principal Balance	73,465,000		73,465,000		14,984,000
Recorded Investment	70,912,000		70,912,000		13,042,000
Average Recorded Investment	67,336,000	$ 10,069,000	53,444,000	$ 11,018,000
Interest Income Recognized	669,000	1,000	1,043,000	1,000
Average recorded investment for TDRs	6,900,000	3,200,000	7,000,000	4,100,000
Interest income recognized on troubled debt restructurings	67,000	0	131,000	0
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	3,366,000		3,366,000		4,699,000
Recorded Investment with No Related Allowance	3,360,000		3,360,000		3,901,000
Unpaid Principal Balance with Related Allowance	0		0		113,000
Recorded Investment with Related Allowance	0		0		112,000
Impaired financing receivable, related allowance	0		0		56,000
Average Recorded Investment	3,387,000	3,509,000	3,491,000	4,350,000
Interest Income Recognized	8,000	0	16,000	0
Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	2,491,000		2,491,000		453,000
Recorded Investment with No Related Allowance	2,340,000		2,340,000		456,000
Unpaid Principal Balance with Related Allowance	789,000		789,000		1,452,000
Recorded Investment with Related Allowance	741,000		741,000		1,399,000
Impaired financing receivable, related allowance	371,000		371,000		699,000
Average Recorded Investment	3,873,000	1,018,000	4,099,000	1,031,000
Interest Income Recognized	0	0	0	0
Owner-occupied real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	1,640,000		1,640,000		4,172,000
Recorded Investment with No Related Allowance	1,600,000		1,600,000		4,015,000
Unpaid Principal Balance with Related Allowance	966,000		966,000		350,000
Recorded Investment with Related Allowance	930,000		930,000		335,000
Impaired financing receivable, related allowance	69,000		69,000		125,000
Average Recorded Investment	2,525,000	2,788,000	4,099,000	2,824,000
Interest Income Recognized	0	0	0	0
Commercial, financial & agricultural
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	61,145,000		61,145,000		2,739,000
Recorded Investment with No Related Allowance	58,974,000		58,974,000		1,882,000
Unpaid Principal Balance with Related Allowance	2,949,000		2,949,000		872,000
Recorded Investment with Related Allowance	2,858,000		2,858,000		821,000
Impaired financing receivable, related allowance	1,465,000		1,465,000		318,000
Average Recorded Investment	57,434,000	2,682,000	41,624,000	2,736,000
Interest Income Recognized	661,000	1,000	1,027,000	1,000
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	39,000		39,000		51,000
Recorded Investment with No Related Allowance	33,000		33,000		40,000
Unpaid Principal Balance with Related Allowance	80,000		80,000		83,000
Recorded Investment with Related Allowance	76,000		76,000		81,000
Impaired financing receivable, related allowance	38,000		38,000		40,000
Average Recorded Investment	117,000	72,000	131,000	77,000
Interest Income Recognized	0	0	0	0
SBA Loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,600,000		3,600,000		5,700,000
Construction, land & land development \| Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	75,000		75,000		82,000
Recorded Investment with No Related Allowance	71,000		71,000		79,000
Unpaid Principal Balance with Related Allowance	0		0		113,000
Recorded Investment with Related Allowance	0		0		112,000
Impaired financing receivable, related allowance	0		0		56,000
Average Recorded Investment	75,000	3,458,000	132,000	4,297,000
Interest Income Recognized	0	0	0	0
Other commercial real estate \| Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	3,291,000		3,291,000		4,617,000
Recorded Investment with No Related Allowance	3,289,000		3,289,000		3,822,000
Unpaid Principal Balance with Related Allowance	0		0		0
Recorded Investment with Related Allowance	0		0		0
Impaired financing receivable, related allowance	0		0		$ 0
Average Recorded Investment	3,312,000	51,000	3,359,000	53,000
Interest Income Recognized	$ 8,000	$ 0	$ 16,000	$ 0

Allowance for Loan and Lease 61

Allowance for Loan and Lease Losses (ALLL) - Organic Nonaccrual Loans (Details) - Organic and Purchased Non-Credit Impaired Loans - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	$ 30,704	$ 12,477
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	2,870	3,448
Total commercial real estate \| Construction, land & land development
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	71	191
Total commercial real estate \| Other commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	2,799	3,257
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	3,081	1,855
Owner-occupied real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	2,530	4,350
Commercial, financial & agricultural
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	22,114	2,703
Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	$ 109	$ 121

Allowance for Loan and Lease 62

Allowance for Loan and Lease Losses (ALLL) - Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 3,605,273	$ 3,532,193	[1]
Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,201	4,761
Current	2,659,521	2,361,082
Total Loans	2,663,722	2,365,843
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	195	532
Current	1,402,134	1,361,602
Total Loans	1,402,329	1,362,134
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	183	532
Current	454,442	412,008
Total Loans	454,625	412,540
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12	0
Current	947,692	949,594
Total Loans	947,704	949,594
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,383	1,960
Current	221,503	194,265
Total Loans	222,886	196,225
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,833	1,187
Current	268,220	259,086
Total Loans	270,053	260,273
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	664	987
Current	665,908	429,218
Total Loans	666,572	430,205
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	36,863	52,396
Total Loans	36,863	52,396
Loans greater than 90 Days and Accruing	0	0
Organic Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	126	95
Current	64,893	64,515
Total Loans	65,019	64,610
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,872	3,925
Current	790,217	986,811
Total Loans	793,089	990,736
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	80
Current	209,277	244,488
Total Loans	209,277	244,568
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	35
Current	14,282	25,873
Total Loans	14,282	25,908
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	45
Current	194,995	218,615
Total Loans	194,995	218,660
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,644	663
Current	71,173	95,866
Total Loans	72,817	96,529
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	190	1,873
Current	82,310	116,421
Total Loans	82,500	118,294
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,001	1,268
Current	425,991	527,916
Total Loans	426,992	529,184
Loans greater than 90 Days and Accruing	0	0
Purchased Non-Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	37	41
Current	1,466	2,120
Total Loans	1,503	2,161
Loans greater than 90 Days and Accruing	0	0
Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,835	10,254
Current	139,627	165,360
Total Loans	148,462	175,614
Purchased Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,468	5,548
Current	82,366	94,745
Total Loans	86,834	100,293
Purchased Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,806	1,882
Current	11,421	11,663
Total Loans	13,227	13,545
Purchased Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,662	3,666
Current	70,945	83,082
Total Loans	73,607	86,748
Purchased Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,168	3,395
Current	29,919	36,937
Total Loans	32,087	40,332
Purchased Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	785	871
Current	17,234	19,932
Total Loans	18,019	20,803
Purchased Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,414	425
Current	10,026	13,626
Total Loans	11,440	14,051
Purchased Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	15
Current	82	120
Total Loans	82	135
30 - 89 Days Past Due \| Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,165	3,761
30 - 89 Days Past Due \| Organic Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	150	487
30 - 89 Days Past Due \| Organic Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	138	487
30 - 89 Days Past Due \| Organic Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12	0
30 - 89 Days Past Due \| Organic Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,114	1,868
30 - 89 Days Past Due \| Organic Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,591	474
30 - 89 Days Past Due \| Organic Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	193	865
30 - 89 Days Past Due \| Organic Loans \| Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30 - 89 Days Past Due \| Organic Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	117	67
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,595	1,523
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	35
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	35
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,449	537
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	46	283
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	71	640
30 - 89 Days Past Due \| Purchased Non-Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	29	28
30 - 89 Days Past Due \| Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,455	2,169
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	306	364
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8	1
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	298	363
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	962	1,519
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	187	85
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	201
30 - 89 Days Past Due \| Purchased Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or Greater Past Due \| Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,036	1,000
90 Days or Greater Past Due \| Organic Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	45	45
90 Days or Greater Past Due \| Organic Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	45	45
90 Days or Greater Past Due \| Organic Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or Greater Past Due \| Organic Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	269	92
90 Days or Greater Past Due \| Organic Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	242	713
90 Days or Greater Past Due \| Organic Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	471	122
90 Days or Greater Past Due \| Organic Loans \| Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or Greater Past Due \| Organic Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9	28
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,277	2,402
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	45
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	45
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	195	126
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	144	1,590
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	930	628
90 Days or Greater Past Due \| Purchased Non-Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8	13
90 Days or Greater Past Due \| Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,380	8,085
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,162	5,184
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,798	1,881
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,364	3,303
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,206	1,876
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	598	786
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,414	224
90 Days or Greater Past Due \| Purchased Credit Impaired Loans \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 15

[1]	Derived from audited financial statements

Allowance for Loan and Lease 63

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Organic Loans (Details) - Organic Loans - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 2,663,722	$ 2,365,843
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,494,546	2,254,814
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	141,058	94,143
OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	10,764	8,210
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	17,351	8,676
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3	0
Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,402,329	1,362,134
Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	454,625	412,540
Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	947,704	949,594
Total commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,323,503	1,291,526
Total commercial real estate \| Pass \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	418,587	371,358
Total commercial real estate \| Pass \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	904,916	920,168
Total commercial real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	68,054	61,168
Total commercial real estate \| Watch \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	30,238	38,939
Total commercial real estate \| Watch \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	37,816	22,229
Total commercial real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	7,916	5,451
Total commercial real estate \| OAEM \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	5,755	2,086
Total commercial real estate \| OAEM \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,161	3,365
Total commercial real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,856	3,989
Total commercial real estate \| Substandard \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	45	157
Total commercial real estate \| Substandard \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,811	3,832
Total commercial real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Doubtful \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Doubtful \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	222,886	196,225
Residential real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	215,547	188,918
Residential real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,180	3,668
Residential real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	311	1,488
Residential real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,848	2,151
Residential real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Owner-occupied real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	270,053	260,273
Owner-occupied real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	238,941	240,987
Owner-occupied real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	23,746	16,891
Owner-occupied real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,214	1,067
Owner-occupied real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	5,152	1,328
Owner-occupied real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Commercial, financial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	666,572	430,205
Commercial, financial & agricultural \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	617,246	421,114
Commercial, financial & agricultural \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	42,647	7,870
Commercial, financial & agricultural \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	262	123
Commercial, financial & agricultural \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,417	1,098
Commercial, financial & agricultural \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Leases
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	36,863	52,396
Leases \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	34,481	47,908
Leases \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,382	4,488
Leases \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Leases \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Leases \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	65,019	64,610
Consumer \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	64,828	64,361
Consumer \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	49	58
Consumer \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	61	81
Consumer \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	78	110
Consumer \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 3	$ 0

Allowance for Loan and Lease 64

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Purchased Non-Credit Impaired Loans (Details) - Purchased Non-Credit Impaired Loans - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable [Line Items]
Loans Receivable	$ 793,089	$ 990,736
Pass
Financing Receivable [Line Items]
Loans Receivable	635,150	897,468
Watch
Financing Receivable [Line Items]
Loans Receivable	92,680	66,478
OAEM
Financing Receivable [Line Items]
Loans Receivable	19,638	9,119
Substandard
Financing Receivable [Line Items]
Loans Receivable	45,527	17,607
Doubtful
Financing Receivable [Line Items]
Loans Receivable	94	64
Total commercial real estate
Financing Receivable [Line Items]
Loans Receivable	209,277	244,568
Total commercial real estate \| Pass
Financing Receivable [Line Items]
Loans Receivable	169,554	240,402
Total commercial real estate \| Watch
Financing Receivable [Line Items]
Loans Receivable	35,584	1,726
Total commercial real estate \| OAEM
Financing Receivable [Line Items]
Loans Receivable	3,584	1,825
Total commercial real estate \| Substandard
Financing Receivable [Line Items]
Loans Receivable	555	615
Total commercial real estate \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Construction, land & land development
Financing Receivable [Line Items]
Loans Receivable	14,282	25,908
Total commercial real estate \| Construction, land & land development \| Pass
Financing Receivable [Line Items]
Loans Receivable	14,210	25,486
Total commercial real estate \| Construction, land & land development \| Watch
Financing Receivable [Line Items]
Loans Receivable	44	385
Total commercial real estate \| Construction, land & land development \| OAEM
Financing Receivable [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Construction, land & land development \| Substandard
Financing Receivable [Line Items]
Loans Receivable	28	37
Total commercial real estate \| Construction, land & land development \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Other commercial real estate
Financing Receivable [Line Items]
Loans Receivable	194,995	218,660
Total commercial real estate \| Other commercial real estate \| Pass
Financing Receivable [Line Items]
Loans Receivable	155,344	214,916
Total commercial real estate \| Other commercial real estate \| Watch
Financing Receivable [Line Items]
Loans Receivable	35,540	1,341
Total commercial real estate \| Other commercial real estate \| OAEM
Financing Receivable [Line Items]
Loans Receivable	3,584	1,825
Total commercial real estate \| Other commercial real estate \| Substandard
Financing Receivable [Line Items]
Loans Receivable	527	578
Total commercial real estate \| Other commercial real estate \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Residential real estate
Financing Receivable [Line Items]
Loans Receivable	72,817	96,529
Residential real estate \| Pass
Financing Receivable [Line Items]
Loans Receivable	69,339	92,119
Residential real estate \| Watch
Financing Receivable [Line Items]
Loans Receivable	1,308	2,216
Residential real estate \| OAEM
Financing Receivable [Line Items]
Loans Receivable	294	791
Residential real estate \| Substandard
Financing Receivable [Line Items]
Loans Receivable	1,802	1,369
Residential real estate \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	74	34
Owner-occupied real estate
Financing Receivable [Line Items]
Loans Receivable	82,500	118,294
Owner-occupied real estate \| Pass
Financing Receivable [Line Items]
Loans Receivable	72,994	110,034
Owner-occupied real estate \| Watch
Financing Receivable [Line Items]
Loans Receivable	6,148	3,227
Owner-occupied real estate \| OAEM
Financing Receivable [Line Items]
Loans Receivable	0	1,280
Owner-occupied real estate \| Substandard
Financing Receivable [Line Items]
Loans Receivable	3,358	3,753
Owner-occupied real estate \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Commercial, financial & agricultural
Financing Receivable [Line Items]
Loans Receivable	426,992	529,184
Commercial, financial & agricultural \| Pass
Financing Receivable [Line Items]
Loans Receivable	321,831	452,822
Commercial, financial & agricultural \| Watch
Financing Receivable [Line Items]
Loans Receivable	49,628	59,306
Commercial, financial & agricultural \| OAEM
Financing Receivable [Line Items]
Loans Receivable	15,760	5,223
Commercial, financial & agricultural \| Substandard
Financing Receivable [Line Items]
Loans Receivable	39,773	11,833
Commercial, financial & agricultural \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Consumer
Financing Receivable [Line Items]
Loans Receivable	1,503	2,161
Consumer \| Pass
Financing Receivable [Line Items]
Loans Receivable	1,432	2,091
Consumer \| Watch
Financing Receivable [Line Items]
Loans Receivable	12	3
Consumer \| OAEM
Financing Receivable [Line Items]
Loans Receivable	0	0
Consumer \| Substandard
Financing Receivable [Line Items]
Loans Receivable	39	37
Consumer \| Doubtful
Financing Receivable [Line Items]
Loans Receivable	$ 20	$ 30

Allowance for Loan and Lease 65

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Purchased Credit Impaired Loans (Details) - Purchased Credit Impaired Loans - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 148,462	$ 175,614
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	76,612	100,928
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	24,791	24,361
OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,272	6,086
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	42,719	44,126
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	68	113
Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	86,834	100,293
Total commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	52,525	69,887
Total commercial real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	16,365	12,807
Total commercial real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,188	3,334
Total commercial real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15,756	14,265
Total commercial real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	13,227	13,545
Total commercial real estate \| Construction, land & land development \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,466	6,677
Total commercial real estate \| Construction, land & land development \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	609	809
Total commercial real estate \| Construction, land & land development \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	915	973
Total commercial real estate \| Construction, land & land development \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	5,237	5,086
Total commercial real estate \| Construction, land & land development \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Total commercial real estate \| Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	73,607	86,748
Total commercial real estate \| Other commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	46,059	63,210
Total commercial real estate \| Other commercial real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15,756	11,998
Total commercial real estate \| Other commercial real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,273	2,361
Total commercial real estate \| Other commercial real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	10,519	9,179
Total commercial real estate \| Other commercial real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	32,087	40,332
Residential real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	17,187	21,706
Residential real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,522	6,419
Residential real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,274	1,590
Residential real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	9,036	10,504
Residential real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	68	113
Owner-occupied real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	18,019	20,803
Owner-occupied real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,356	7,181
Owner-occupied real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,759	4,896
Owner-occupied real estate \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	791	818
Owner-occupied real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	7,113	7,908
Owner-occupied real estate \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Commercial, financial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	11,440	14,051
Commercial, financial & agricultural \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	513	2,094
Commercial, financial & agricultural \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	121	211
Commercial, financial & agricultural \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	323
Commercial, financial & agricultural \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	10,806	11,423
Commercial, financial & agricultural \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	82	135
Consumer \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	31	60
Consumer \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	24	28
Consumer \| OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	19	21
Consumer \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	8	26
Consumer \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 0	$ 0

Allowance for Loan and Lease 66

Allowance for Loan and Lease Losses (ALLL) - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)contractcommitment	Jun. 30, 2017contract	Jun. 30, 2018USD ($)loancommitment	Dec. 31, 2017USD ($)commitment
Receivables [Abstract]
Troubled debt restructuring	$ 6,897,000		$ 6,897,000	$ 1,500,000
Allowance for loan losses on troubled debt restructuring	$ 28,000		$ 28,000	$ 0
Number of commitments to extend credit to borrowers with TDR \| commitment	1		1	0
Recorded investment for commitments to extend credit to borrowers with TDR	$ 599,000		$ 599,000
Number of TDR's that subsequently defaulted within 12 months	0	0	1
Recorded investment for TDR's that subsequently defaulted within 12 months			$ 848,000

Allowance for Loan and Lease 67

Allowance for Loan and Lease Losses (ALLL) - Troubled Debt Restructuring (Details) - Organic Loans $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)contract	Jun. 30, 2017USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	3	0
Pre-Modification Outstanding Recorded Investment	$ 5,570	$ 0
Post-Modification Outstanding Recorded Investment	$ 5,570	$ 0
Total commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	2	0
Pre-Modification Outstanding Recorded Investment	$ 2,801	$ 0
Post-Modification Outstanding Recorded Investment	$ 2,801	$ 0
Total commercial real estate \| Construction, land & land development
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Total commercial real estate \| Other commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	2	0
Pre-Modification Outstanding Recorded Investment	$ 2,801	$ 0
Post-Modification Outstanding Recorded Investment	$ 2,801	$ 0
Commercial & industrial
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Owner-occupied real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	1	0
Pre-Modification Outstanding Recorded Investment	$ 2,769	$ 0
Post-Modification Outstanding Recorded Investment	$ 2,769	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0

SBA Servicing Rights - Narrati

SBA Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Transfers and Servicing [Abstract]
SBA loans sold, unpaid principal balance	$ 9,800	$ 16,500	$ 18,400	$ 25,000
SBA loans sold, gains on sales	1,000	1,600	1,900	2,500
SBA servicing fee income	462	$ 407	938	$ 840
SBA loans serviced	$ 184,800		$ 184,800		$ 185,600

SBA Servicing Rights - Rollfor

SBA Servicing Rights - Rollforward (Details) - SBA Loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 4,003	$ 3,547	$ 4,069	$ 3,477
Additions	213	391	413	597
Fair value adjustments	(227)	(110)	(493)	(246)
Balance, end of period	$ 3,989	$ 3,828	$ 3,989	$ 3,828

SBA Servicing Rights - Fair Va

SBA Servicing Rights - Fair Value Assumptions & Sensitivity Analysis (Details) - SBA Loans - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Mar. 31, 2018	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]
Fair value	$ 3,989	$ 4,069	$ 4,003	$ 3,828	$ 3,547	$ 3,477
Weighted average discount rate	12.70%	12.90%
Decline in fair value due to a 100 basis point adverse change	$ (130)	$ (140)
Decline in fair value due to a 200 basis point adverse change	$ (253)	$ (272)
Prepayment speed	11.00%	9.10%
Decline in fair value due to a 10% adverse change	$ (160)	$ (141)
Decline in fair value due to a 20% adverse change	$ (310)	$ (275)
Weighted average remaining life	5 years 11 months	6 years 8 months

SBA Servicing Rights - Past Du

SBA Servicing Rights - Past Due (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	$ 352,020		$ 349,787
Net Charge-offs during the period	52	$ 0
Serviced for others
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	184,803		185,557
Net Charge-offs during the period	0	0
Held-for-sale
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	15,874		10,420
Net Charge-offs during the period	0	0
Held-for-investment
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	151,343		153,810
Net Charge-offs during the period	52	$ 0
30 - 89 Days Past Due
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	2,234		4,063
30 - 89 Days Past Due \| Serviced for others
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	557		1,555
30 - 89 Days Past Due \| Held-for-sale
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	0		0
30 - 89 Days Past Due \| Held-for-investment
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	1,677		2,508
90 Days or Greater Past Due
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	5,714		6,627
90 Days or Greater Past Due \| Serviced for others
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	0		0
90 Days or Greater Past Due \| Held-for-sale
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	0		0
90 Days or Greater Past Due \| Held-for-investment
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	$ 5,714		$ 6,627

Derivative Instruments and He72

Derivative Instruments and Hedging Activities - Narrative (Details)	3 Months Ended			6 Months Ended
	Jun. 30, 2018USD ($)derivative	Jun. 30, 2017USD ($)	Mar. 31, 2013USD ($)	Jun. 30, 2018USD ($)derivative	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)derivative
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (330,000)	$ (21,000)		$ (64,000)	$ (409,000)
Credit Risk Contract
Derivative [Line Items]
Fair value of derivatives in net liability position	0			0
Interest rate swaps and caps
Derivative [Line Items]
Notional amount	52,700,000			52,700,000		$ 36,300,000
Derivative financial instruments, assets	4,230,000			4,230,000		2,011,000
Derivative financial instruments, liabilities	0			0		116,000
Forward Commitments
Derivative [Line Items]
Notional amount	$ 82,600,000			$ 82,600,000		$ 55,800,000
Derivatives designated as hedging instruments \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivatives held \| derivative	72			72		84
Notional amount	$ 123,000,000			$ 123,000,000		$ 141,900,000
Derivatives designated as hedging instruments \| Interest Rate Caps
Derivative [Line Items]
Notional amount			$ 200,000,000
Term of contract			5 years
Not Designated as Hedging Instrument \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivatives held \| derivative	0			0
Noninterest Income \| Interest Rate Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ 0	(40,000)		$ 0	(56,000)
Noninterest Income \| Interest rate swaps and caps
Derivative [Line Items]
Amount of gain (loss) recognized in income	204,000	(284,000)		542,000	329,000
Noninterest Income \| Forward Commitments
Derivative [Line Items]
Amount of gain (loss) recognized in income	(534,000)	$ 303,000		(606,000)	$ (682,000)
Other Assets \| Derivatives designated as hedging instruments
Derivative [Line Items]
Derivative financial instruments, assets	4,230,000			4,230,000		2,011,000
Other Assets \| Derivatives designated as hedging instruments \| Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, assets	4,230,000			4,230,000		2,011,000
Other Assets \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative financial instruments, assets	1,013,000			1,013,000		616,000
Other Assets \| Not Designated as Hedging Instrument \| Mortgage Derivatives
Derivative [Line Items]
Derivative financial instruments, assets	1,000,000			1,000,000		616,000
Other Liabilities \| Derivatives designated as hedging instruments
Derivative [Line Items]
Derivative financial instruments, liabilities	0			0		116,000
Other Liabilities \| Derivatives designated as hedging instruments \| Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, liabilities	0			0		116,000
Other Liabilities \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative financial instruments, liabilities	699,000			699,000		238,000
Other Liabilities \| Not Designated as Hedging Instrument \| Mortgage Derivatives
Derivative [Line Items]
Derivative financial instruments, liabilities	$ 699,000			$ 699,000		$ 238,000

Derivative Instruments and He73

Derivative Instruments and Hedging Activities - Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives designated as hedging instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 4,230	$ 2,011
Derivatives designated as hedging instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Liabilities	0	116
Not Designated as Hedging Instrument \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	1,013	616
Not Designated as Hedging Instrument \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Liabilities	699	238
Interest rate swaps and caps
Derivatives, Fair Value [Line Items]
Derivative Assets	4,230	2,011
Derivatives Liabilities	0	116
Interest rate swaps and caps \| Derivatives designated as hedging instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	4,230	2,011
Interest rate swaps and caps \| Derivatives designated as hedging instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Liabilities	0	116
Mortgage derivatives \| Not Designated as Hedging Instrument \| Other Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	1,000	616
Mortgage derivatives \| Not Designated as Hedging Instrument \| Other Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Liabilities	$ 699	$ 238

Derivative Instruments and He74

Derivative Instruments and Hedging Activities - Gain (Loss) on Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income	$ 63,688	$ 49,847	$ 124,249	$ 97,044
Interest Expense	7,558	3,369	13,263	6,608
Noninterest Income	10,917	10,476	21,378	19,935
Interest Rate Swaps \| Interest Income \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationships in Subtopic 815-20 - Hedged items	(588)	0	(2,316)	0
Gain (loss) on fair value hedging relationships in Subtopic 815-20	668	0	2,527	0
Interest Rate Swaps \| Interest Expense \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationships in Subtopic 815-20 - Hedged items	0	0	0	0
Gain (loss) on fair value hedging relationships in Subtopic 815-20	0	0	0	0
Interest Rate Swaps \| Noninterest Income \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationships in Subtopic 815-20 - Hedged items	0	425	0	(83)
Gain (loss) on fair value hedging relationships in Subtopic 815-20	0	(464)	0	32
Interest Rate Caps \| Interest Income \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships in Subtopic 815-20	0	0	0	0
Interest Rate Caps \| Interest Expense \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships in Subtopic 815-20	0	430	91	834
Interest Rate Caps \| Noninterest Income \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedging relationships in Subtopic 815-20	$ 0	$ 0	$ 0	$ 0

Derivative Instruments and He75

Derivative Instruments and Hedging Activities - Fair Value Hedges (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Carrying Amount of the Hedged Asset	$ 119,559	$ 139,391
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset	(4,145)	(1,892)
Loans
Derivatives, Fair Value [Line Items]
Carrying Amount of the Hedged Asset	119,559	139,391
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset	$ (4,145)	$ (1,892)

Derivative Instruments and He76

Derivative Instruments and Hedging Activities - Cash Flow Hedges (Details) - Interest Rate Caps - Cash Flow Hedging - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in AOCI on derivatives (effective portion)	$ 0	$ (409)	$ (95)	$ (754)
OCI \| Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in AOCI on derivatives (effective portion)	0	21	(4)	80
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss reclassified from AOCI into income	0	(430)	(91)	(834)
Interest Expense \| Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss reclassified from AOCI into income	$ 0	$ 430	$ 91	$ 834

Derivative Instruments and He77

Derivative Instruments and Hedging Activities - Interest Rate Products Not Designated as Hedges (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (330,000)	$ (21,000)	$ (64,000)	$ (409,000)
Noninterest Income \| Interest Rate Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in income	0	(40,000)	0	(56,000)
Noninterest Income \| Interest Rate Lock Commitments
Derivative [Line Items]
Amount of gain (loss) recognized in income	204,000	(284,000)	542,000	329,000
Noninterest Income \| Forward Commitments
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (534,000)	$ 303,000	$ (606,000)	$ (682,000)

Balance Sheet Offsetting and 78

Balance Sheet Offsetting and Repurchase Agreements - Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Repurchase agreements
Gross Amounts Recognized	$ 13,525	$ 25,209
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	13,525	25,209
Gross Amounts Not Offset on the Statement of Financial Condition	0	0
Collateral Received/Posted	(13,525)	(25,209)
Net Amount	0	0
Total liabilities
Gross Amounts Recognized	13,525	25,325
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	13,525	25,325
Gross Amounts Not Offset on the Statement of Financial Condition	0	(116)
Collateral Received/Posted	(13,525)	(25,209)
Net Amount	0	0
Interest rate swaps and caps
Offsetting Assets
Gross Amounts Recognized	4,230	2,011
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	4,230	2,011
Financial Instruments	0	(116)
Collateral Received/Posted	(4,230)	(1,895)
Net Amount	0	0
Offsetting Liabilities
Gross Amounts Recognized	0	116
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	0	116
Financial Instruments	0	(116)
Collateral Received/Posted	0	0
Net Amount	$ 0	$ 0

Balance Sheet Offsetting and 79

Balance Sheet Offsetting and Repurchase Agreements - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Offsetting [Abstract]
Securities sold under repurchase agreements	$ 13,525	$ 25,209

Regulatory Matters - Minimum R

Regulatory Matters - Minimum Required Regulatory Ratios (Details)	Jun. 30, 2018
Common Equity Tier 1 (CET1) capital ratio
Minimum Requirement	4.50%
Well-capitalized	6.50%
Tier 1 risk-based capital ratio
Minimum Requirement	6.00%
Well-capitalized	8.00%
Total risk-based capital ratio
Minimum Requirement	8.00%
Well-capitalized	10.00%
Tier 1 leverage ratio
Minimum Requirement	4.00%
Well-capitalized	5.00%

Regulatory Matters - Regulator

Regulatory Matters - Regulatory Ratios Consolidated (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Common Equity Tier 1 (CET1) capital ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	12.79%	12.61%
Required Minimum Amount	$ 200,354	$ 195,433
Tier 1 risk-based capital ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	12.79%	12.61%
Required Minimum Amount	$ 267,139	$ 260,578
Total risk-based capital ratio
Actual Amount	$ 602,572	$ 576,572
Actual Ratio	13.53%	13.28%
Required Minimum Amount	$ 356,186	$ 347,437
Tier 1 leverage ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	11.75%	11.24%
Required Minimum Amount	$ 193,773	$ 194,924

Regulatory Matters - Regulat82

Regulatory Matters - Regulatory Ratios Subsidiaries (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Common Equity Tier 1 (CET1) capital ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	12.79%	12.61%
Required Minimum Amount	$ 200,354	$ 195,433
Tier 1 risk-based capital ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	12.79%	12.61%
Required Minimum Amount	$ 267,139	$ 260,578
Total risk-based capital ratio
Actual Amount	$ 602,572	$ 576,572
Actual Ratio	13.53%	13.28%
Required Minimum Amount	$ 356,186	$ 347,437
Tier 1 leverage ratio
Actual Amount	$ 569,237	$ 547,822
Actual Ratio	11.75%	11.24%
Required Minimum Amount	$ 193,773	$ 194,924
State Bank
Common Equity Tier 1 (CET1) capital ratio
Actual Amount	$ 494,402	$ 481,135
Actual Ratio	11.13%	11.10%
Required Minimum Amount	$ 199,943	$ 194,972
Required Well Capitalized Amount	288,807	281,626
Tier 1 risk-based capital ratio
Actual Amount	$ 494,402	$ 481,135
Actual Ratio	11.13%	11.10%
Required Minimum Amount	$ 266,591	$ 259,962
Required Well Capitalized Amount	355,455	346,617
Total risk-based capital ratio
Actual Amount	$ 527,737	$ 509,885
Actual Ratio	11.88%	11.77%
Required Minimum Amount	$ 355,455	$ 346,617
Required Well Capitalized Amount	444,318	433,271
Tier 1 leverage ratio
Actual Amount	$ 494,402	$ 481,135
Actual Ratio	10.21%	9.90%
Required Minimum Amount	$ 193,611	$ 194,429
Required Well Capitalized Amount	$ 242,014	$ 243,037

Regulatory Matters - Narrative

Regulatory Matters - Narrative (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017	[1]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash and amounts due from depository institutions	$ 12,974,000	$ 17,438,000
State Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capacity to pay dividends without prior regulatory approval	0
State Bank Financial Corporation
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash and amounts due from depository institutions	$ 66,500,000

[1]	Derived from audited financial statements

Commitments and Contingent Li84

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Commitments [Line Items]
Commitments	$ 1,048,831	$ 997,047
Minimum
Commitments [Line Items]
Fixed rate loan commitments maturity (term)	1 month
Maximum
Commitments [Line Items]
Fixed rate loan commitments maturity (term)	13 years
Fixed \| Commitments to extend credit
Commitments [Line Items]
Commitments	$ 91,509	65,117
Fixed \| Letters of credit
Commitments [Line Items]
Commitments	5,759	5,978
Variable \| Commitments to extend credit
Commitments [Line Items]
Commitments	944,668	914,524
Variable \| Letters of credit
Commitments [Line Items]
Commitments	6,895	$ 11,428
Obligation to repurchase or indemnify loans sold
Commitments [Line Items]
Recourse liability	$ 296

Fair Value - Narrative (Detail

Fair Value - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Fair Value - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of mortgages held-for-sale	$ 39,200		$ 39,200
Impaired loans, recorded investments	73,465		73,465		$ 14,984
Impaired loans, valuation allowances	1,943		1,943		1,238
Mortgage loans held-for-sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contractual balance including accrued interest	38,100		38,100
Gain (loss) on change in fair value			1,200
Mortgage banking income \| Mortgage loans held-for-sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on change in fair value	251	$ (243)	617	$ 482
Collateral Dependent \| Assets measured on a nonrecurring basis \| Organic and Purchased Non-Credit Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, recorded investments	70,900		70,900		13,000
Impaired loans, valuation allowances	$ 1,900		$ 1,900		$ 1,200

Fair Value - Assets and Liabil

Fair Value - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Fair value of mortgages held-for-sale	$ 39,200
Measured on recurring basis
Assets:
Fair value of mortgages held-for-sale	39,222	$ 25,791
SBA servicing rights	3,989	4,069
Total recurring assets at fair value	1,003,683	1,044,333
Liabilities:
Total recurring liabilities at fair value	699	354
Measured on recurring basis \| Equity securities - financial services industry
Assets:
Investment securities available-for-sale	1,515	1,515
Measured on recurring basis \| U.S. Government securities
Assets:
Investment securities available-for-sale	66,679	69,559
Measured on recurring basis \| Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	99,232	118,710
Measured on recurring basis \| Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	542,970	575,849
Measured on recurring basis \| Corporate securities
Assets:
Investment securities available-for-sale	126,789	108,337
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1)
Assets:
Fair value of mortgages held-for-sale	0	0
SBA servicing rights	0	0
Total recurring assets at fair value	0	0
Liabilities:
Total recurring liabilities at fair value	0	0
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1) \| Equity securities - financial services industry
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1) \| U.S. Government securities
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1) \| Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1) \| Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1) \| Corporate securities
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Fair value of mortgages held-for-sale	39,222	25,791
SBA servicing rights	0	0
Total recurring assets at fair value	998,733	1,039,749
Liabilities:
Total recurring liabilities at fair value	264	154
Measured on recurring basis \| Significant Other Observable Inputs (Level 2) \| Equity securities - financial services industry
Assets:
Investment securities available-for-sale	1,515	1,515
Measured on recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government securities
Assets:
Investment securities available-for-sale	66,679	69,559
Measured on recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	99,232	118,710
Measured on recurring basis \| Significant Other Observable Inputs (Level 2) \| Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	542,970	575,849
Measured on recurring basis \| Significant Other Observable Inputs (Level 2) \| Corporate securities
Assets:
Investment securities available-for-sale	126,789	108,337
Measured on recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Fair value of mortgages held-for-sale	0	0
SBA servicing rights	3,989	4,069
Total recurring assets at fair value	4,950	4,584
Liabilities:
Total recurring liabilities at fair value	435	200
Measured on recurring basis \| Significant Unobservable Inputs (Level 3) \| Equity securities - financial services industry
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Significant Unobservable Inputs (Level 3) \| U.S. Government securities
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Significant Unobservable Inputs (Level 3) \| Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis \| Significant Unobservable Inputs (Level 3) \| Corporate securities
Assets:
Investment securities available-for-sale	0	0
Hedged loans \| Measured on recurring basis
Assets:
Derivative assets	119,559	139,391
Hedged loans \| Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative assets	0	0
Hedged loans \| Measured on recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Derivative assets	119,559	139,391
Hedged loans \| Measured on recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	0	0
Mortgage Derivatives \| Measured on recurring basis
Assets:
Derivative assets	1,013	616
Liabilities:
Derivatives liabilities	699	238
Mortgage Derivatives \| Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative assets	0	0
Liabilities:
Derivatives liabilities	0	0
Mortgage Derivatives \| Measured on recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Derivative assets	52	101
Liabilities:
Derivatives liabilities	264	38
Mortgage Derivatives \| Measured on recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	961	515
Liabilities:
Derivatives liabilities	435	200
Interest rate swaps and caps \| Measured on recurring basis
Assets:
Derivative assets	4,230	2,011
Liabilities:
Derivatives liabilities	0	116
Interest rate swaps and caps \| Measured on recurring basis \| Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative assets	0	0
Liabilities:
Derivatives liabilities	0	0
Interest rate swaps and caps \| Measured on recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Derivative assets	4,230	2,011
Liabilities:
Derivatives liabilities	0	116
Interest rate swaps and caps \| Measured on recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Derivative assets	0	0
Liabilities:
Derivatives liabilities	$ 0	$ 0

Fair Value - Mortgage Derivati

Fair Value - Mortgage Derivatives Reconciliation (Details) - Mortgage Derivatives - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other Assets
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	$ 916	$ 1,096	$ 515	$ 699
Issuances	430	362	1,031	1,204
Settlements and closed loans	(385)	(568)	(585)	(1,013)
Balance, end of period	961	890	961	890
Other Liabilities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	310	465	200	445
Issuances	430	363	740	828
Settlements and closed loans	(305)	(443)	(505)	(888)
Balance, end of period	435	385	435	385
Mortgage banking income
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Gain on change in fair value	$ (80)	$ (126)	$ 211	$ 251

Fair Value - Financial Assets

Fair Value - Financial Assets Measured on a Nonrecurring Basis (Details) - Organic and Purchased Non-Credit Impaired Loans - Assets measured on a nonrecurring basis - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 68,969	$ 11,804
Total nonrecurring assets at fair value	68,969	11,804
Quoted Market Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Total nonrecurring assets at fair value	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Total nonrecurring assets at fair value	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	68,969	11,804
Total nonrecurring assets at fair value	$ 68,969	$ 11,804

Fair Value - Nonfinancial Asse

Fair Value - Nonfinancial Assets Measured on a Nonrecurring Basis (Details) - Assets measured on a nonrecurring basis - Other real estate owned - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 5,563	$ 1,204
Quoted Market Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 5,563	$ 1,204

Fair Value - Reconciliation of

Fair Value - Reconciliation of Other Real Estate Owned (Details) - Other real estate owned - Assets measured on a nonrecurring basis - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned at fair value	$ 5,563	$ 1,204
Estimated selling costs and other adjustments	(551)	(309)
Other real estate owned	$ 5,012	$ 895

Fair Value - Unobservable Inpu

Fair Value - Unobservable Inputs (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
SBA servicing rights \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	9.00%	10.00%
Prepayment speed	5.00%	4.00%
SBA servicing rights \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	23.00%	22.00%
Prepayment speed	13.00%	13.00%
SBA servicing rights \| Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	13.00%	13.00%
Prepayment speed	11.00%	9.00%
Mortgage derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pull-through rate	85.00%	84.00%
Other real estate owned \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	0.00%	0.00%
Other real estate owned \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	50.00%	33.00%
Other real estate owned \| Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	5.00%	12.00%
Measured on recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
SBA servicing rights	$ 3,989	$ 4,069
Mortgage derivatives - asset	1,003,683	1,044,333
Measured on recurring basis \| SBA servicing rights \| Discounted cash flows
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
SBA servicing rights	3,989	4,069
Measured on recurring basis \| Mortgage derivatives \| Pricing model
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage derivatives - asset	961	515
Measured on a nonrecurring basis \| Other real estate owned \| Third party appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 5,563	$ 1,204
Impaired loans - collateral dependent \| Minimum \| Collateral dependent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	0.00%	0.00%
Impaired loans - collateral dependent \| Maximum \| Collateral dependent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	100.00%	50.00%
Impaired loans - collateral dependent \| Weighted Average \| Collateral dependent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management discount for property type and recent market volatility	3.00%	9.00%
Impaired loans - collateral dependent \| Measured on a nonrecurring basis \| Third party appraisal \| Collateral dependent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans - collateral dependent	$ 68,969	$ 11,804
Mortgage derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pull-through rate	85.00%	84.00%
Mortgage derivatives \| Measured on recurring basis \| Pricing model
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage derivatives - liability	$ 435	$ 200

Fair Value - Estimated Fair Va

Fair Value - Estimated Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Investment securities available-for-sale	$ 835,670	$ 872,455	[1]
Investment securities held-to-maturity	16,817	33,351
Loans held-for-sale	39,200
Carrying Amount \| Level 1
Assets:
Cash and cash equivalents	238,291	230,877
Carrying Amount \| Level 2
Assets:
Equity securities	1,515	1,515
Investment securities available-for-sale	835,670	872,455
Loans held-for-sale	55,096	36,211
Derivative financial instruments	4,230	2,011
Accrued interest receivable	15,577	14,906
Liabilities:
Deposits	4,302,704	4,243,135
Federal funds purchased and securities sold under agreements to repurchase	13,525	25,209
Notes payable	398	398
Interest rate swaps and caps	0	116
Accrued interest payable	3,623	3,750
Carrying Amount \| Level 2 & 3
Assets:
Investment securities held-to-maturity	16,742	32,852
Loans, net	3,571,938	3,503,443
Derivative financial instruments	1,013	616
Liabilities:
Interest rate swaps and caps	699	238
Carrying Amount \| Level 3
Assets:
Other real estate owned	5,012	895
SBA servicing rights	3,989	4,069
Federal Home Loan Bank stock	4,452	4,651
Estimated Fair Value \| Level 1
Assets:
Cash and cash equivalents	238,291	230,877
Estimated Fair Value \| Level 2
Assets:
Equity securities	1,515	1,515
Investment securities available-for-sale	835,670	872,455
Loans held-for-sale	56,641	37,580
Derivative financial instruments	4,230	2,011
Accrued interest receivable	15,577	14,906
Liabilities:
Deposits	4,301,233	4,237,883
Federal funds purchased and securities sold under agreements to repurchase	13,525	25,209
Notes payable	398	398
Interest rate swaps and caps	0	116
Accrued interest payable	3,623	3,750
Estimated Fair Value \| Level 2 & 3
Assets:
Investment securities held-to-maturity	16,817	33,351
Loans, net	3,612,910	3,513,057
Derivative financial instruments	1,013	616
Liabilities:
Interest rate swaps and caps	699	238
Estimated Fair Value \| Level 3
Assets:
Other real estate owned	5,563	1,204
SBA servicing rights	3,989	4,069
Federal Home Loan Bank stock	$ 4,452	$ 4,651

[1]	Derived from audited financial statements

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of earnings per share (in shares)			0	0
Numerator:
Net income per consolidated statements of income	$ 18,767	$ 15,203	$ 36,132	$ 26,761
Net income allocated to participating securities	(509)	(413)	(943)	(706)
Net income allocated to common stock	18,258	14,790	35,189	26,055
Basic earnings per share computation:
Net income allocated to common stock	$ 18,258	$ 14,790	$ 35,189	$ 26,055
Weighted average common shares outstanding, including shares considered participating securities (in shares)	39,098,445	38,955,513	39,053,840	38,908,102
Less: Average participating securities (in shares)	(1,060,264)	(1,059,388)	(1,018,729)	(1,026,103)
Weighted average shares (in shares)	38,038,181	37,896,125	38,035,111	37,881,999
Basic earnings per share (usd per share)	$ 0.48	$ 0.39	$ 0.93	$ 0.69
Diluted earnings per share computation:
Net income allocated to common stock	$ 18,258	$ 14,790	$ 35,189	$ 26,055
Weighted average shares (in shares)	38,038,181	37,896,125	38,035,111	37,881,999
Weighted average dilutive grants (in shares)	36,925	46,358	37,808	52,188
Weighted average shares and dilutive potential common shares (in shares)	38,075,106	37,942,483	38,072,919	37,934,187
Diluted earnings per share (usd per share)	$ 0.48	$ 0.39	$ 0.92	$ 0.69

Accumulated Other Comprehensi94

Accumulated Other Comprehensive Income - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period			$ 641,551	[1]	$ 613,633
Other comprehensive income (loss) before income taxes:
Net change in unrealized losses	$ (2,184)	$ 1,110	(9,064)		594
Amounts reclassified for net gains realized and included in earnings	(250)	417	(159)		809
Transfer of unrealized gain from held-to-maturity to available-for-sale	(51)	0	(51)		0
Amortization of net unrealized losses on securities transferred to held-to-maturity	(3)	46	23		44
Adoption of ASU 2016-01						$ 23
Income tax benefit	(616)	585	(1,997)		549
Balance, end of period	656,919	632,337	656,919		632,337
Investment Securities Available-for-Sale
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	(7,973)	(1,568)	(2,523)		(1,200)
Other comprehensive income (loss) before income taxes:
Net change in unrealized losses	(2,184)	1,089	(9,060)		514
Amounts reclassified for net gains realized and included in earnings	(250)	(13)	(250)		(25)
Transfer of unrealized gain from held-to-maturity to available-for-sale	0		0
Amortization of net unrealized losses on securities transferred to held-to-maturity	0	0	0		0
Adoption of ASU 2016-01						23
Income tax benefit	(616)	413	(2,019)		194
Balance, end of period	(9,791)	(905)	(9,791)		(905)
Held-to-Maturity Securities Transferred from Available-For-Sale
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	47	(177)	21		(175)
Other comprehensive income (loss) before income taxes:
Net change in unrealized losses	0	0	0		0
Amounts reclassified for net gains realized and included in earnings	0	0	0		0
Transfer of unrealized gain from held-to-maturity to available-for-sale	(51)		(51)
Amortization of net unrealized losses on securities transferred to held-to-maturity	(3)	46	23		44
Adoption of ASU 2016-01						0
Income tax benefit	0	0	0		0
Balance, end of period	(7)	(131)	(7)		(131)
Cash Flow Hedges (Effective Portion)
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	0	(802)	(65)		(1,082)
Other comprehensive income (loss) before income taxes:
Net change in unrealized losses	0	21	(4)		80
Amounts reclassified for net gains realized and included in earnings	0	430	91		834
Transfer of unrealized gain from held-to-maturity to available-for-sale	0		0
Amortization of net unrealized losses on securities transferred to held-to-maturity	0	0	0		0
Adoption of ASU 2016-01						0
Income tax benefit	0	172	22		355
Balance, end of period	0	(523)	0		(523)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	(7,926)	(2,547)	(2,567)		(2,457)
Other comprehensive income (loss) before income taxes:
Adoption of ASU 2016-01						$ 23
Balance, end of period	$ (9,798)	$ (1,559)	$ (9,798)		$ (1,559)

[1]	Derived from audited financial statements

Accumulated Other Comprehensi95

Accumulated Other Comprehensive Income - Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on deposits	$ (7,558)	$ (3,369)	$ (13,263)	$ (6,608)
Income tax (expense) benefit	(5,904)	(7,909)	(11,380)	(14,201)
Investment securities available-for-sale \| Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on sale of investment securities	250	13	250	25
Income tax (expense) benefit	(63)	(5)	(63)	(10)
Net income	187	8	187	15
Cash flow hedges (effective portion) \| Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on deposits	0	(430)	(91)	(834)
Income tax (expense) benefit	0	165	23	320
Net income	$ 0	$ (265)	$ (68)	$ (514)