State Bank Financial (STBZ) 10-Q 3 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 02, 2017
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	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (shares)		38,991,789
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and amounts due from depository institutions	$ 14,235	$ 13,219
Interest-bearing deposits in other financial institutions	251,115	132,851
Federal funds sold	16,889	3,523
Cash and cash equivalents	282,239	149,593
Investment securities available-for-sale	920,763	847,178
Investment securities held-to-maturity (fair value of $58,605 and $67,435, respectively)	57,867	67,063
Loans	3,572,790	2,814,572
Allowance for loan and lease losses	(26,842)	(26,598)
Loans, net	3,545,948	2,787,974
Loans held-for-sale (includes loans at fair value of $33,787 and $35,813, respectively)	47,743	52,169
Other real estate owned	1,271	10,897
Premises and equipment, net	52,120	52,056
Goodwill	84,564	77,084
Other intangibles, net	11,755	12,749
SBA servicing rights	3,950	3,477
Bank-owned life insurance	66,846	65,371
Other assets	73,417	99,654
Total assets	5,148,483	4,225,265
Liabilities:
Noninterest-bearing deposits	1,179,698	984,419
Interest-bearing deposits	3,061,387	2,446,746
Total deposits	4,241,085	3,431,165
Federal funds purchased and securities sold under agreements to repurchase	25,499	27,673
FHLB borrowings	0	47,014
Notes payable	398	398
Other liabilities	238,911	105,382
Total liabilities	4,505,893	3,611,632
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; 38,991,022 and 38,845,573 shares issued and outstanding, respectively	390	388
Additional paid-in capital	412,448	409,736
Retained earnings	230,095	205,966
Accumulated other comprehensive income (loss), net of tax	(343)	(2,457)
Total shareholders' equity	642,590	613,633
Total liabilities and shareholders' equity	$ 5,148,483	$ 4,225,265

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Investment securities held-to-maturity - fair value	$ 58,605	$ 67,435
Loans held-for-sale at fair value	$ 33,787	$ 35,813
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)	38,991,022	38,845,573
Common stock, shares outstanding (in shares)	38,991,022	38,845,573

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Loans	$ 35,400	$ 26,580	$ 104,332	$ 76,328
Loan accretion	6,520	9,335	23,425	33,039
Investment securities	5,564	4,670	16,587	13,883
Deposits with other financial institutions	218	44	402	230
Total interest income	47,702	40,629	144,746	123,480
Interest expense:
Deposits	3,260	2,408	9,491	6,759
FHLB borrowings	94	73	435	100
Notes payable	9	12	29	93
Federal funds purchased and repurchase agreements	7	11	23	36
Total interest expense	3,370	2,504	9,978	6,988
Net interest income	44,332	38,125	134,768	116,492
Provision for loan and lease losses	415	88	3,262	(40)
Net interest income after provision for loan and lease losses	43,917	38,037	131,506	116,532
Noninterest income:
Service charges on deposits	1,575	1,383	4,513	4,121
Mortgage banking income	2,793	3,216	8,783	9,808
SBA income	1,464	1,553	4,625	4,740
Payroll and insurance income	1,487	1,297	4,400	4,097
ATM income	826	759	2,522	2,273
Bank-owned life insurance income	526	533	1,475	1,463
Gain on sale of investment securities	3	38	28	447
Other	1,008	990	3,271	2,441
Total noninterest income	9,682	9,769	29,617	29,390
Noninterest expense:
Salaries and employee benefits	21,457	19,799	65,426	59,221
Occupancy and equipment	3,187	2,984	9,796	9,100
Data processing	2,587	2,097	7,608	6,383
Legal and professional fees	700	1,064	3,403	2,993
Merger-related expenses	135	135	2,742	454
Marketing	342	665	1,409	1,786
Federal deposit insurance premiums and other regulatory fees	407	441	1,202	1,556
Loan collection costs and OREO activity	181	(841)	(1,074)	(452)
Amortization of intangibles	701	513	2,094	1,586
Other	1,874	1,623	5,527	5,425
Total noninterest expense	31,571	28,480	98,133	88,052
Income before income taxes	22,028	19,326	62,990	57,870
Income tax expense	7,592	6,885	21,793	20,606
Net income	$ 14,436	$ 12,441	$ 41,197	$ 37,264
Basic earnings per share (usd per share)	$ 0.37	$ 0.34	$ 1.06	$ 1.01
Diluted earnings per share (usd per share)	0.37	0.34	1.06	1.01
Cash dividends declared per common share (usd per share)	$ 0.14000	$ 0.14000	$ 0.42	$ 0.42
Weighted Average Shares Outstanding:
Basic (in shares)	37,918,753	35,863,183	37,894,385	35,940,402
Diluted (shares)	37,963,141	35,965,948	37,943,971	36,040,655

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 14,436	$ 12,441	$ 41,197	$ 37,264
Other comprehensive income (loss), net of tax:
Net change in unrealized gains	1,604	(758)	2,198	7,737
Amortization of net unrealized (gains) losses on securities transferred to held-to-maturity	(4)	(2)	40	(3)
Amounts reclassified for losses realized and included in earnings	376	282	1,185	357
Other comprehensive income (loss), before income taxes	1,976	(478)	3,423	8,091
Income tax expense	760	(184)	1,309	3,197
Other comprehensive income (loss), net of income taxes	1,216	(294)	2,114	4,894
Comprehensive income	$ 15,652	$ 12,147	$ 43,311	$ 42,158

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, 2015		172,745
Balance (in shares) at Dec. 31, 2015			37,077,848
Balance at Dec. 31, 2015	$ 536,490		$ 371	$ 358,671	$ 179,082	$ (1,634)
Increase (decrease) in shareholders' equity
Exercise of stock warrants (in shares)		(13,833)	7,247
Exercise of stock warrants	0			0
Share-based compensation	3,010			3,010
Repurchase of common stock (in shares)			(270,715)
Repurchase of common stock	(5,128)		$ (3)	(5,125)
Restricted stock activity (in shares)			80,173
Restricted stock activity	121		$ 1	130	(10)
Other comprehensive income	4,894					4,894
Common stock dividends, $.42 per share	(15,517)				(15,517)
Net income	37,264				37,264
Balance warrants (in shares) at Sep. 30, 2016		158,912
Balance (in shares) at Sep. 30, 2016			36,894,553
Balance at Sep. 30, 2016	$ 561,134		$ 369	356,686	200,819	3,260
Balance warrants (in shares) at Dec. 31, 2016		133,912
Balance (in shares) at Dec. 31, 2016	38,845,573		38,845,573
Balance at Dec. 31, 2016	$ 613,633		$ 388	409,736	205,966	(2,457)
Increase (decrease) in shareholders' equity
Exercise of stock warrants (in shares)		(46,008)	31,939
Exercise of stock warrants	1		$ 1
Share-based compensation	2,826			2,826
Restricted stock activity (in shares)			96,939
Restricted stock activity	(1,097)		$ 1	(649)	(449)
Stock option activity (in shares)			4,085
Stock option activity	(65)			200	(265)
Issuance of common stock (in shares)			12,486
Issuance of common stock	335		$ 0	335
Other comprehensive income	2,114					2,114
Common stock dividends, $.42 per share	(16,354)				(16,354)
Net income	$ 41,197				41,197
Balance warrants (in shares) at Sep. 30, 2017		87,904
Balance (in shares) at Sep. 30, 2017	38,991,022		38,991,022
Balance at Sep. 30, 2017	$ 642,590		$ 390	$ 412,448	$ 230,095	$ (343)

CONSOLIDATED STATEMENTS OF CHA7

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Stockholders' Equity [Abstract]
Dividends per share (usd per share)	$ 0.42	$ 0.42

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income	$ 41,197	$ 37,264
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	8,668	8,485
Provision for loan and lease losses	3,262	(40)
Accretion on acquisitions, net	(23,425)	(33,039)
Gains on sales of other real estate owned	(1,780)	(894)
Writedowns of other real estate owned	130	207
Proceeds from sales of mortgage loans held-for-sale	370,290	404,669
Proceeds from sales of SBA loans held-for-sale	38,722	42,518
Originations of mortgage loans held-for-sale	(358,514)	(389,283)
Originations of SBA loans held-for-sale	(32,679)	(51,200)
Mortgage banking activities	(8,783)	(9,808)
Gains on sales of SBA loans	(3,642)	(3,925)
Net gains on sales of available-for-sale securities	(28)	(447)
Share-based compensation expense	2,826	3,010
Changes in fair value of SBA servicing rights	377	314
Changes in other assets and other liabilities, net	1,550	295
Net cash provided by operating activities	38,171	8,126
Cash flows from Investing Activities
Purchase of investment securities available-for-sale	(216,960)	(215,818)
Proceeds from sales and calls of investment securities available-for-sale	71,588	93,584
Proceeds from maturities and paydowns of investment securities available-for-sale	147,429	135,872
Proceeds from maturities and paydowns of investment securities held-to-maturity	14,301	0
Purchase of investment securities held-to-maturity	(5,000)	(10,500)
Loan originations, repayments and resolutions, net	(20,595)	(156,617)
Purchases of loans	0	(1,300)
Net purchases of premises and equipment	(1,590)	(1,703)
Proceeds from sales of other real estate owned	11,926	3,577
Net cash received in excess of assets and liabilities acquired in purchase business combinations	57,255	0
Net cash provided by (used in) investing activities	58,354	(152,905)
Cash Flows from Financing Activities
Net increase in noninterest-bearing customer deposits	92,626	64,372
Net increase in interest-bearing customer deposits	11,693	32,958
Repayment of other borrowed funds	0	(1,414)
Proceeds from FHLB advances	880,000	440,000
Repayments of FHLB advances	(927,014)	(420,000)
Net decrease in federal funds purchased and securities sold under repurchase agreements	(2,174)	(12,055)
Payment of contingent consideration	(1,495)	(150)
Exercise of stock warrants	1	0
Restricted stock activity	(1,097)	121
Stock option activity	(65)	0
Repurchase of common stock	0	(5,128)
Dividends paid to shareholders	(16,354)	(15,517)
Net cash provided by financing activities	36,121	83,187
Net increase (decrease) in cash and cash equivalents	132,646	(61,592)
Cash and cash equivalents, beginning	149,593	175,362
Cash and cash equivalents, ending	282,239	113,770
Supplemental Disclosure of Noncash Investing and Financing Activities
Unrealized gains on securities and cash flow hedges, net of tax	2,114	4,894
Transfer of investment securities available-for-sale to held-to-maturity	0	56,595
Transfers of loans to other real estate owned	1,340	2,969
Acquisitions:
Assets acquired	909,117	0
Liabilities assumed	713,663	0
Net assets	195,454	0
Goodwill and fair value adjustments	$ 7,480	$ 0

Basis of Presentation and Recen

Basis of Presentation and Recently Adopted Accounting Standards	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation and Recently Adopted Accounting Standards	NOTE 1: BASIS OF PRESENTATION AND RECENTLY ADOPTED ACCOUNTING STANDARDS 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 September 30, 2017 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, 2016 . 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.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	NOTE 2: RECENT ACCOUNTING PRONOUNCEMENTS Adoption of New Accounting Standards ASU 2016-05 — In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships . The amendments in this Update clarify that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument under Topic 815 does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. The amendments in this update are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted and the amendments can be adopted either on a prospective basis or a modified retrospective basis. The Company adopted the amendments in this ASU effective January 1, 2017. The adoption did not have a material impact on our consolidated financial statements. Recent Accounting Pronouncements ASU 2017-12 — On August 28, 2017, the 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 is still reviewing the impact of adoption of this guidance. ASU 2017-09 — On May 10, 2017, the 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 the adoption of this guidance, but 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. 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. Early adoption is prohibited except for the presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk which may be early adopted. The guidance is not expected to have a significant impact on the Company's financial position, results of operations or disclosures. 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 and services to customers in an amount equal to the consideration it receives or expects to receive. 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 currently plans to adopt the guidance using the modified retrospective method and without electing any of the practical expedients available. The Company has performed an analysis of the guidance and it is not expected to have a significant impact on the Company's financial position or results of operations but will increase disclosures of revenue.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2017
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, none 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, 2016 (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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2017 2016 Pro Forma Pro Forma Net interest income $ 163,304 $ 152,606 Net income 47,304 43,599 Earnings per share: Basic $ 1.22 $ 1.18 Diluted 1.21 1.18 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. Acquisition of NBG Bancorp, Inc. On December 31, 2016, the Company completed its acquisition of NBG Bancorp, Inc. ("NBG Bancorp"), the holding company for The National Bank of Georgia ("National Bank of Georgia"), a national banking association. NBG Bancorp was immediately merged into the Company followed by the merger of National Bank of Georgia with and into State Bank. Under the terms of the merger agreement, each share of NBG Bancorp common stock was converted into the right to receive either $45.45 in cash or 2.1642 shares of the Company's common stock, provided, that the elections by NBG Bancorp shareholders were prorated under the merger agreement such that 50% of NBG Bancorp's shares were exchanged for cash and 50% were exchanged for Company common stock. The elections by NBG Bancorp's shareholders were made subsequent to completion of the merger and the final merger consideration was distributed in February 2017. Total consideration paid was approximately $77.9 million , consisting of $34.2 million in cash and $43.7 million in the Company's common stock. The merger of NBG Bancorp was accounted for under the acquisition method of accounting, using pushdown 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 $36.6 million was generated from the acquisition, none of which is expected to be deductible for income tax purposes. The following table summarizes the assets acquired and liabilities assumed and the consideration paid by the Company at the acquisition date (dollars in thousands) : As Recorded by NBG Bancorp, Inc. Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 38,146 $ (31,158 ) (a) $ 6,988 Investment securities available-for-sale 5,974 (40 ) (b) 5,934 Loans, net 348,641 (3,645 ) (c) 344,996 Loans held-for-sale 694 — 694 Other real estate owned 69 (5 ) (d) 64 Core deposit intangible — 3,740 (e) 3,740 Premises and equipment, net 7,943 (635 ) (f) 7,308 Bank-owned life insurance 1,499 — 1,499 Other assets 6,542 276 (g) 6,818 Total assets acquired $ 409,508 $ (31,467 ) $ 378,041 Liabilities Deposits: Noninterest-bearing $ 58,161 $ — $ 58,161 Interest-bearing 261,034 (30,711 ) (h) 230,323 Total deposits 319,195 (30,711 ) 288,484 FHLB advances 46,354 (140 ) (i) 46,214 Other liabilities 2,067 — 2,067 Total liabilities assumed 367,616 (30,851 ) 336,765 Net identifiable assets acquired over liabilities assumed $ 41,892 $ (616 ) $ 41,276 Goodwill $ — $ 36,587 $ 36,587 Net assets acquired over liabilities assumed $ 41,892 $ 35,971 $ 77,863 Consideration: State Bank Financial Corporation common shares issued 1,626,648 Purchase price per share of the Company's common stock $ 26.86 Company common stock issued 43,692 Cash exchanged for shares 34,171 Fair value of total consideration transferred $ 77,863 Explanation of fair value adjustments (a) Adjustment reflects the elimination of a deposit account The National Bank of Georgia held with State Bank. (b) 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. (c) Adjustment reflects the fair value adjustment based on State Bank's evaluation of the acquired loan portfolio and includes the adjustment to eliminate the recorded allowance for loan and lease losses. (d) Adjustment reflects the fair value adjustment based on State Bank's evaluation of the acquired other real estate owned portfolio. (e) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (f) Adjustment reflects the fair value adjustment based on appraised values. (g) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (h) Adjustment reflects the elimination of a deposit account The National Bank of Georgia held with State Bank and the fair value adjustment based on State Bank's evaluation of acquired deposits. (i) Adjustment arises since the rates on acquired FHLB advances were lower than the rates available on similar borrowings. Subsequent to the NBG Bancorp acquisition all FHLB advances were paid off. The following table presents certain pro forma information as if NBG Bancorp had been acquired on January 1, 2016 (dollars in thousands, except per share amounts) . These results combine the historical results of NBG Bancorp 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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2016 Pro Forma Net interest income $ 129,840 Net income 41,719 Earnings per share: Basic $ 1.08 Diluted 1.08 The following is a summary of the purchased credit impaired loans acquired in the NBG Bancorp transaction on December 31, 2016 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 33,584 Contractual cash flows not expected to be collected (nonaccretable difference) (3,736 ) Expected cash flows at acquisition 29,848 Accretable difference (2,799 ) Basis in acquired loans at acquisition - estimated fair value $ 27,049 On December 31, 2016, the fair value of the purchased non-credit impaired loans acquired in the NBG Bancorp transaction was $317.9 million . The gross contractual amounts receivable of the purchased non-credit impaired loans at acquisition was $350.0 million , of which $4.4 million was the amount of contractual cash flows not expected to be collected. Acquisition of S Bankshares, Inc. On December 31, 2016, the Company completed its acquisition of S Bankshares Inc. ("S Bankshares"), the holding company for S Bank, a Georgia state-chartered bank. S Bankshares was immediately merged into the Company followed by the merger of S Bank with and into State Bank. Under the terms of the merger agreement, each share of S Bankshares common stock was converted into the right to receive either $56.70 in cash or 2.7444 shares of the Company's common stock, provided, that the elections by S Bankshares' shareholders were prorated under the merger agreement such that 60% of S Bankshares' shares were exchanged for Company common stock and 40% were exchanged for cash. Total consideration paid was approximately $12.6 million , consisting of $4.3 million in cash and $8.3 million in the Company's common stock. The acquisition of S Bankshares was accounted for under the acquisition method of accounting, using pushdown 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 $4.1 million was generated from the acquisition, none of which is expected to be deductible for income tax purposes. The following table summarizes the assets acquired and liabilities assumed and the consideration paid by the Company at the acquisition date (dollars in thousands) : As Recorded by S Bankshares Inc. Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 954 $ — $ 954 Investment securities available-for-sale 13,814 (88 ) (a) 13,726 Loans, net 81,383 (2,344 ) (b) 79,039 Other real estate owned 1,278 (332 ) (c) 946 Core deposit intangible — 1,010 (d) 1,010 Premises and equipment, net 3,132 420 (e) 3,552 Bank-owned life insurance 3,124 — 3,124 Other assets 2,636 1,130 (f) 3,766 Total assets acquired $ 106,321 $ (204 ) $ 106,117 Liabilities Deposits: Noninterest-bearing $ 16,620 $ — $ 16,620 Interest-bearing 76,664 494 (g) 77,158 Total deposits 93,284 494 93,778 Federal funds purchased and securities sold under repurchase agreements 1,951 — 1,951 FHLB advances 800 — 800 Other liabilities 1,104 — 1,104 Total liabilities assumed 97,139 494 97,633 Net identifiable assets acquired over liabilities assumed $ 9,182 $ (698 ) $ 8,484 Goodwill $ — $ 4,140 $ 4,140 Net assets acquired over liabilities assumed $ 9,182 $ 3,442 $ 12,624 Consideration: State Bank Financial Corporation common shares issued 310,596 Purchase price per share of the Company's common stock $ 26.86 Company common stock issued 8,343 Cash exchanged for shares 4,281 Fair value of total consideration transferred $ 12,624 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 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 based on State Bank's evaluation of the acquired other real estate owned portfolio. (d) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (e) Adjustment reflects the fair value adjustment based on appraised values. (f) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (g) 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 S Bankshares had been acquired on January 1, 2016 (dollars in thousands, except per share amounts) . These results combine the historical results of S Bankshares 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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2016 Pro Forma Net interest income $ 120,833 Net income 37,448 Earnings per share: Basic $ 1.00 Diluted 1.00 The following is a summary of the purchased credit impaired loans acquired in the S Bankshares transaction on December 31, 2016 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 15,966 Contractual cash flows not expected to be collected (nonaccretable difference) (2,805 ) Expected cash flows at acquisition 13,161 Accretable difference (1,377 ) Basis in acquired loans at acquisition - estimated fair value $ 11,784 On December 31, 2016, the fair value of the purchased non-credit impaired loans acquired in the S Bankshares transaction was $67.3 million . The gross contractual amounts receivable of the purchased non-credit impaired loans at acquisition was $77.0 million , of which $1.3 million was the amount of contractual cash flows not expected to be collected.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE 4: INVESTMENT SECURITIES The amortized cost and fair value of securities classified as available-for-sale are as follows (dollars in thousands) : September 30, 2017 December 31, 2016 Investment Securities Available-for-Sale Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. Government securities $ 77,725 $ 2 $ 352 $ 77,375 $ 89,044 $ 70 $ 465 $ 88,649 States and political subdivisions 2,859 — — 2,859 300 1 — 301 Residential mortgage-backed securities — nonagency 123,609 3,559 116 127,052 151,519 3,129 639 154,009 Residential mortgage-backed securities — agency 607,533 430 5,037 602,926 533,479 548 4,725 529,302 Corporate securities 108,874 1,726 49 110,551 74,793 207 83 74,917 Total investment securities available-for-sale $ 920,600 $ 5,717 $ 5,554 $ 920,763 $ 849,135 $ 3,955 $ 5,912 $ 847,178 The amortized cost and fair value of securities classified as held-to-maturity are as follows (dollars in thousands) : September 30, 2017 December 31, 2016 Investment Securities Held-to-Maturity Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Asset-backed securities $ 47,681 $ 424 $ — $ 48,105 $ 56,804 $ 295 $ 14 $ 57,085 Corporate securities 10,186 314 — 10,500 10,259 91 — 10,350 Total investment securities held-to-maturity $ 57,867 $ 738 $ — $ 58,605 $ 67,063 $ 386 $ 14 $ 67,435 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) September 30, 2017 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: U.S. Government securities $ 2,495 $ 75,230 $ — $ — $ 77,725 States and political subdivisions — 1,117 1,742 — 2,859 Residential mortgage-backed securities — nonagency — — — 123,609 123,609 Residential mortgage-backed securities — agency — 32,951 286,764 287,818 607,533 Corporate securities 17,775 75,215 14,000 1,884 108,874 Total debt securities available-for-sale $ 20,270 $ 184,513 $ 302,506 $ 413,311 $ 920,600 Fair Value: U.S. Government securities $ 2,496 $ 74,879 $ — $ — $ 77,375 States and political subdivisions — 1,117 1,742 — 2,859 Residential mortgage-backed securities — nonagency — — — 127,052 127,052 Residential mortgage-backed securities — agency — 32,747 284,321 285,858 602,926 Corporate securities 17,811 75,879 14,763 2,098 110,551 Total debt securities available-for-sale $ 20,307 $ 184,622 $ 300,826 $ 415,008 $ 920,763 Debt Securities Held-to-Maturity Distribution of Maturities (1) September 30, 2017 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: Asset-backed securities $ — $ — $ 32,181 $ 15,500 $ 47,681 Corporate securities — — 10,186 — 10,186 Total debt securities held-to-maturity $ — $ — $ 42,367 $ 15,500 $ 57,867 Fair Value: Asset-backed securities $ — $ — $ 32,492 $ 15,613 $ 48,105 Corporate securities — — 10,500 — 10,500 Total debt securities held-to-maturity $ — $ — $ 42,992 $ 15,613 $ 58,605 (1) Actual cash flows may differ from contractual maturities as borrowers may prepay obligations without prepayment penalties. The following tables provide information regarding securities with unrealized losses (dollars in thousands) : Less than 12 Months 12 Months or More Total Investment Securities Available-for-Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2017 U.S. Government securities $ 49,399 $ 166 $ 20,480 $ 186 $ 69,879 $ 352 States and political subdivisions — — — — — — Residential mortgage-backed securities — nonagency 1,912 10 5,986 106 7,898 116 Residential mortgage-backed securities — agency 398,119 4,129 43,932 908 442,051 5,037 Corporate securities 8,369 49 — — 8,369 49 Total temporarily impaired securities $ 457,799 $ 4,354 $ 70,398 $ 1,200 $ 528,197 $ 5,554 December 31, 2016 U.S. Government securities $ 43,958 $ 465 $ — $ — $ 43,958 $ 465 States and political subdivisions — — — — — — Residential mortgage-backed securities — nonagency 29,403 239 23,991 400 53,394 639 Residential mortgage-backed securities — agency 430,490 4,484 18,795 241 449,285 4,725 Corporate securities 22,944 83 — — 22,944 83 Total temporarily impaired securities $ 526,795 $ 5,271 $ 42,786 $ 641 $ 569,581 $ 5,912 Less than 12 Months 12 Months or More Total Investment Securities Held-to-Maturity Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2016 Asset-backed securities $ 6,486 $ 14 $ — $ — $ 6,486 $ 14 Total temporarily impaired securities $ 6,486 $ 14 $ — $ — $ 6,486 $ 14 At September 30, 2017 , the Company held 120 investment 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 September 30, 2017 , 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 investment securities; therefore, these securities are not deemed to be other than temporarily impaired. Sales and calls of securities are summarized in the following table for the periods presented (dollars in thousands) : Three Months Ended Nine Months Ended September 30 September 30 Securities Available-For-Sale 2017 2016 2017 2016 Proceeds from sales and calls $ 6,810 $ 28,705 $ 71,588 $ 93,584 Gross gains on sales and calls $ 3 $ 38 $ 121 $ 447 Gross losses on sales and calls — — (93 ) — Net realized gains on sales and calls $ 3 $ 38 $ 28 $ 447 The composition of investment 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. Investment securities with an aggregate fair value of $408.9 million and $368.3 million at September 30, 2017 and December 31, 2016 , respectively, were pledged to secure public deposits and repurchase agreements.

Loans

Loans	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans	NOTE 5: LOANS Loans, in total, are summarized as follows (dollars in thousands) : Total Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 507,956 $ 567,763 Other commercial real estate 1,253,147 1,025,063 Total commercial real estate 1,761,103 1,592,826 Residential real estate 329,692 343,398 Owner-occupied real estate 413,432 395,863 Commercial, financial & agricultural 937,682 368,120 Leases 66,765 71,724 Consumer 64,116 42,641 Total loans 3,572,790 2,814,572 Allowance for loan and lease losses (26,842 ) (26,598 ) Total loans, net $ 3,545,948 $ 2,787,974 Organic loans, net of related discounts, are summarized as follows (dollars in thousands) : Organic Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 460,368 $ 500,018 Other commercial real estate 915,727 754,790 Total commercial real estate 1,376,095 1,254,808 Residential real estate 175,258 144,295 Owner-occupied real estate 261,784 256,317 Commercial, financial & agricultural 363,551 327,381 Leases 66,765 71,724 Consumer 61,200 36,039 Total organic loans (1) 2,304,653 2,090,564 Allowance for loan and lease losses (22,709 ) (21,086 ) Total organic loans, net $ 2,281,944 $ 2,069,478 (1) Includes net deferred loan fees that totaled approximately $8.9 million and $7.0 million at September 30, 2017 and December 31, 2016 , respectively. Purchased non-credit impaired loans ("PNCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Non-Credit Impaired Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 30,670 $ 51,208 Other commercial real estate 234,486 209,531 Total commercial real estate 265,156 260,739 Residential real estate 112,244 144,596 Owner-occupied real estate 125,438 115,566 Commercial, financial & agricultural 558,992 36,206 Consumer 2,647 6,255 Total purchased non-credit impaired loans (1) 1,064,477 563,362 Allowance for loan and lease losses (900 ) (439 ) Total purchased non-credit impaired loans, net $ 1,063,577 $ 562,923 (1) Includes net discounts that totaled approximately $15.7 million and $10.5 million at September 30, 2017 and December 31, 2016 , respectively. Purchased credit impaired loans ("PCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Credit Impaired Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 16,918 $ 16,537 Other commercial real estate 102,934 60,742 Total commercial real estate 119,852 77,279 Residential real estate 42,190 54,507 Owner-occupied real estate 26,210 23,980 Commercial, financial & agricultural 15,139 4,533 Consumer 269 347 Total purchased credit impaired loans 203,660 160,646 Allowance for loan and lease losses (3,233 ) (5,073 ) Total purchased credit impaired loans, net $ 200,427 $ 155,573 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 Nine Months Ended September 30 September 30 Purchased Credit Impaired Loans 2017 2016 2017 2016 Balance, beginning of period $ 130,837 $ 129,100 $ 155,573 $ 137,777 Accretion of fair value discounts 6,520 9,335 23,425 33,039 Fair value of acquired loans 77,551 — 77,551 1,300 Reductions in principal balances resulting from repayments, write-offs and foreclosures (16,009 ) (17,032 ) (57,962 ) (53,078 ) Change in the allowance for loan and lease losses on purchased credit impaired loans 1,528 142 1,840 2,507 Balance, end of period $ 200,427 $ 121,545 $ 200,427 $ 121,545 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 Nine Months Ended September 30 September 30 Changes in Accretable Discount 2017 2016 2017 2016 Balance, beginning of period $ 59,808 $ 75,390 $ 69,301 $ 86,100 Additions from acquisitions 11,664 — 11,664 1,648 Accretion (6,520 ) (9,335 ) (23,425 ) (33,039 ) Transfers to accretable discounts and exit events, net 2,244 5,939 9,656 17,285 Balance, end of period $ 67,196 $ 71,994 $ 67,196 $ 71,994 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 and additions from acquisitions. At September 30, 2017 and December 31, 2016 , loans with a carrying value of $3.1 billion and $2.5 billion , respectively, were pledged for lines of credit

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses (ALLL)	9 Months Ended
	Sep. 30, 2017
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 September 30 2017 2016 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 $ 22,560 $ 667 $ 4,761 $ 27,988 $ 22,008 $ 158 $ 5,433 $ 27,599 Charge-offs (912 ) (152 ) (643 ) (1,707 ) (311 ) (16 ) (223 ) (550 ) Recoveries 106 40 — 146 39 1 — 40 Net (charge-offs) recoveries (806 ) (112 ) (643 ) (1,561 ) (272 ) (15 ) (223 ) (510 ) Provision for loan and lease losses 955 345 (885 ) 415 — 7 81 88 Balance, end of period $ 22,709 $ 900 $ 3,233 $ 26,842 $ 21,736 $ 150 $ 5,291 $ 27,177 Nine Months Ended September 30 2017 2016 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 $ 21,086 $ 439 $ 5,073 $ 26,598 $ 21,224 $ 53 $ 7,798 $ 29,075 Charge-offs (1,988 ) (397 ) (971 ) (3,356 ) (2,858 ) (80 ) (2,345 ) (5,283 ) Recoveries 296 42 — 338 189 62 3,174 3,425 Net recoveries (charge-offs) (1,692 ) (355 ) (971 ) (3,018 ) (2,669 ) (18 ) 829 (1,858 ) Provision for loan and lease losses 3,315 816 (869 ) 3,262 3,181 115 (3,336 ) (40 ) Balance, end of period $ 22,709 $ 900 $ 3,233 $ 26,842 $ 21,736 $ 150 $ 5,291 $ 27,177 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 September 30, 2017 Beginning balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 Charge-offs (746 ) — — (98 ) (2 ) (66 ) (912 ) Recoveries — 3 — 20 67 16 106 Provision 469 132 374 97 (194 ) 77 955 Ending balance $ 13,060 $ 1,976 $ 2,410 $ 3,682 $ 696 $ 885 $ 22,709 Nine Months Ended September 30, 2017 Beginning balance $ 11,767 $ 1,786 $ 2,239 $ 4,093 $ 655 $ 546 $ 21,086 Charge-offs (933 ) (48 ) — (240 ) (501 ) (266 ) (1,988 ) Recoveries — 9 — 71 176 40 296 Provision 2,226 229 171 (242 ) 366 565 3,315 Ending balance $ 13,060 $ 1,976 $ 2,410 $ 3,682 $ 696 $ 885 $ 22,709 Three Months Ended September 30, 2016 Beginning balance $ 12,943 $ 1,890 $ 1,982 $ 3,834 $ 881 $ 478 $ 22,008 Charge-offs — (1 ) — (172 ) (112 ) (26 ) (311 ) Recoveries — 2 — 35 2 — 39 Provision (818 ) 2 56 699 (55 ) 116 — Ending balance $ 12,125 $ 1,893 $ 2,038 $ 4,396 $ 716 $ 568 $ 21,736 Nine Months Ended September 30, 2016 Beginning balance $ 13,607 $ 2,053 $ 1,920 $ 2,509 $ 865 $ 270 $ 21,224 Charge-offs (2,125 ) (29 ) — (336 ) (327 ) (41 ) (2,858 ) Recoveries — 5 44 130 9 1 189 Provision 643 (136 ) 74 2,093 169 338 3,181 Ending balance $ 12,125 $ 1,893 $ 2,038 $ 4,396 $ 716 $ 568 $ 21,736 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 September 30, 2017 Commercial real estate $ 69 $ 12,991 $ 13,060 $ 3,417 $ 1,372,678 $ 1,376,095 Residential real estate 360 1,616 1,976 720 174,538 175,258 Owner-occupied real estate 83 2,327 2,410 759 261,025 261,784 Commercial, financial & agricultural 129 3,553 3,682 511 363,040 363,551 Leases — 696 696 — 66,765 66,765 Consumer 37 848 885 75 61,125 61,200 Total organic loans $ 678 $ 22,031 $ 22,709 $ 5,482 $ 2,299,171 $ 2,304,653 December 31, 2016 Commercial real estate $ 201 $ 11,566 $ 11,767 $ 5,057 $ 1,249,751 $ 1,254,808 Residential real estate 413 1,373 1,786 825 143,470 144,295 Owner-occupied real estate — 2,239 2,239 — 256,317 256,317 Commercial, financial & agricultural 146 3,947 4,093 298 327,083 327,381 Leases — 655 655 — 71,724 71,724 Consumer 27 519 546 54 35,985 36,039 Total organic loans $ 787 $ 20,299 $ 21,086 $ 6,234 $ 2,084,330 $ 2,090,564 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 September 30, 2017 Beginning balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 Charge-offs (50 ) (7 ) — (91 ) (4 ) (152 ) Recoveries 1 5 — 32 2 40 Provision 93 120 68 61 3 345 Ending balance $ 189 $ 460 $ 220 $ 28 $ 3 $ 900 Nine Months Ended September 30, 2017 Beginning balance $ 88 $ 72 $ 44 $ 235 $ — $ 439 Charge-offs (50 ) (7 ) (80 ) (251 ) (9 ) (397 ) Recoveries 1 5 — 32 4 42 Provision 150 390 256 12 8 816 Ending balance $ 189 $ 460 $ 220 $ 28 $ 3 $ 900 Three Months Ended September 30, 2016 Beginning balance $ — $ — $ — $ 158 $ — $ 158 Charge-offs — (14 ) — — (2 ) (16 ) Recoveries — 1 — — — 1 Provision — 13 — (8 ) 2 7 Ending balance $ — $ — $ — $ 150 $ — $ 150 Nine Months Ended September 30, 2016 Beginning balance $ — $ 53 $ — $ — $ — $ 53 Charge-offs — (76 ) — (1 ) (3 ) (80 ) Recoveries — 45 — — 17 62 Provision — (22 ) — 151 (14 ) 115 Ending balance $ — $ — $ — $ 150 $ — $ 150 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 September 30, 2017 Commercial real estate $ — $ 189 $ 189 $ 525 $ 264,631 $ 265,156 Residential real estate — 460 460 387 111,857 112,244 Owner-occupied real estate — 220 220 2,664 122,774 125,438 Commercial, financial & agricultural 28 — 28 2,031 556,961 558,992 Consumer — 3 3 8 2,639 2,647 Total purchased non-credit impaired loans $ 28 $ 872 $ 900 $ 5,615 $ 1,058,862 $ 1,064,477 December 31, 2016 Commercial real estate $ — $ 88 $ 88 $ 56 $ 260,683 $ 260,739 Residential real estate — 72 72 320 144,276 144,596 Owner-occupied real estate 44 — 44 1,875 113,691 115,566 Commercial, financial & agricultural — 235 235 1,128 35,078 36,206 Consumer — — — 2 6,253 6,255 Total purchased non-credit impaired loans $ 44 $ 395 $ 439 $ 3,381 $ 559,981 $ 563,362 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 September 30, 2017 Beginning balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 Charge-offs (168 ) (50 ) (416 ) (6 ) (3 ) (643 ) Recoveries — — — — — — Provision (506 ) 310 (697 ) 5 3 (885 ) Ending balance $ 1,457 $ 1,228 $ 498 $ 36 $ 14 $ 3,233 Nine Months Ended September 30, 2017 Beginning balance $ 2,183 $ 1,196 $ 1,655 $ 38 $ 1 $ 5,073 Charge-offs (401 ) (92 ) (452 ) (22 ) (4 ) (971 ) Recoveries — — — — — — Provision (325 ) 124 (705 ) 20 17 (869 ) Ending balance $ 1,457 $ 1,228 $ 498 $ 36 $ 14 $ 3,233 Three Months Ended September 30, 2016 Beginning balance $ 2,834 $ 1,025 $ 1,502 $ 69 $ 3 $ 5,433 Charge-offs (131 ) (5 ) (87 ) — — (223 ) Recoveries — — — — — — Provision (341 ) 254 173 (4 ) (1 ) 81 Ending balance $ 2,362 $ 1,274 $ 1,588 $ 65 $ 2 $ 5,291 Nine Months Ended September 30, 2016 Beginning balance $ 3,388 $ 1,893 $ 2,449 $ 60 $ 8 $ 7,798 Charge-offs (864 ) (899 ) (298 ) (228 ) (56 ) (2,345 ) Recoveries 2,281 400 207 233 53 3,174 Provision (2,443 ) (120 ) (770 ) — (3 ) (3,336 ) Ending balance $ 2,362 $ 1,274 $ 1,588 $ 65 $ 2 $ 5,291 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 September 30, 2017 Commercial real estate $ 1,129 $ 328 $ 1,457 $ 89,812 $ 30,040 $ 119,852 Residential real estate 153 1,075 1,228 3,058 39,132 42,190 Owner-occupied real estate 353 145 498 14,732 11,478 26,210 Commercial, financial & agricultural 22 14 36 2,345 12,794 15,139 Consumer 14 — 14 134 135 269 Total purchased credit impaired loans $ 1,671 $ 1,562 $ 3,233 $ 110,081 $ 93,579 $ 203,660 December 31, 2016 Commercial real estate $ 760 $ 1,423 $ 2,183 $ 29,387 $ 47,892 $ 77,279 Residential real estate 156 1,040 1,196 1,897 52,610 54,507 Owner-occupied real estate 1,471 184 1,655 8,376 15,604 23,980 Commercial, financial & agricultural 2 36 38 86 4,447 4,533 Consumer — 1 1 8 339 347 Total purchased credit impaired loans $ 2,389 $ 2,684 $ 5,073 $ 39,754 $ 120,892 $ 160,646 Impaired loans, segregated by class of loans, are presented in the following table (dollars in thousands) : September 30, 2017 December 31, 2016 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 $ 5 $ 5 $ — $ 4,565 $ 2,933 $ — Other commercial real estate 4,606 3,800 — 56 56 — Total commercial real estate 4,611 3,805 — 4,621 2,989 — Residential real estate 413 387 — 388 320 — Owner-occupied real estate 3,392 3,257 — 193 188 — Commercial, financial & agricultural 2,012 1,457 — 1,335 1,128 — Consumer 16 8 — 2 2 — Subtotal 10,444 8,914 — 6,539 4,627 — With related allowance recorded: Construction, land & land development 139 137 69 4,277 2,124 201 Other commercial real estate — — — — — — Total commercial real estate 139 137 69 4,277 2,124 201 Residential real estate 782 720 360 891 825 413 Owner-occupied real estate 166 166 83 1,706 1,687 44 Commercial, financial & agricultural 1,127 1,085 157 308 298 146 Consumer 85 75 37 55 54 27 Subtotal 2,299 2,183 706 7,237 4,988 831 Total impaired loans $ 12,743 $ 11,097 $ 706 $ 13,776 $ 9,615 $ 831 (1) Includes loans with SBA guaranteed balances of $4.7 million and $3.0 million at September 30, 2017 and December 31, 2016 , 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) : September 30, 2017 September 30, 2016 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 $ 146 $ — $ 5,062 $ — Other commercial real estate 4,347 — — — Total commercial real estate 4,493 — 5,062 — Residential real estate 1,120 — 1,743 — Owner-occupied real estate 3,446 — — — Commercial, financial & agricultural 2,653 — 1,163 — Consumer 87 — 50 — Total impaired loans $ 11,799 $ — $ 8,018 $ — Nine Months Ended Construction, land & land development $ 2,862 $ — $ 6,070 $ — Other commercial real estate 4,558 — 201 — Total commercial real estate 7,420 — 6,271 — Residential real estate 1,154 — 1,794 — Owner-occupied real estate 3,500 — 148 3 Commercial, financial & agricultural 2,761 1 1,722 24 Consumer 94 — 38 — Total impaired loans $ 14,929 $ 1 $ 9,973 $ 27 (1) The average recorded investment for troubled debt restructurings was $0.0 million and $2.7 million for the three and nine months ended September 30, 2017 , respectively, and was $5.0 million and $6.4 million for the three and nine months ended September 30, 2016 , respectively. (2) The interest income recognized on troubled debt restructurings was $0 for both the three and nine months ended September 30, 2017 , and was $0 and $24,000 for the three and nine months ended September 30, 2016 , respectively. The following table presents the recorded investment in nonaccrual loans by loan class at the dates indicated (dollars in thousands) : Nonaccrual Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 142 $ 5,057 Other commercial real estate 3,800 56 Total commercial real estate 3,942 5,113 Residential real estate 1,107 1,146 Owner-occupied real estate 3,423 1,874 Commercial, financial & agricultural 2,542 1,426 Consumer 83 56 Total nonaccrual loans $ 11,097 $ 9,615 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 September 30, 2017 Construction, land & land development $ 262 $ 45 $ 307 $ 460,061 $ 460,368 $ — Other commercial real estate — — — 915,727 915,727 — Total commercial real estate 262 45 307 1,375,788 1,376,095 — Residential real estate 286 136 422 174,836 175,258 — Owner-occupied real estate 424 593 1,017 260,767 261,784 — Commercial, financial & agricultural 543 437 980 362,571 363,551 — Leases — — — 66,765 66,765 — Consumer 66 22 88 61,112 61,200 — Total organic loans $ 1,581 $ 1,233 $ 2,814 $ 2,301,839 $ 2,304,653 $ — December 31, 2016 Construction, land & land development $ 49 $ 12 $ 61 $ 499,957 $ 500,018 $ — Other commercial real estate — — — 754,790 754,790 — Total commercial real estate 49 12 61 1,254,747 1,254,808 — Residential real estate 157 118 275 144,020 144,295 — Owner-occupied real estate 40 — 40 256,277 256,317 — Commercial, financial & agricultural 247 283 530 326,851 327,381 — Leases — — — 71,724 71,724 — Consumer 350 31 381 35,658 36,039 — Total organic loans $ 843 $ 444 $ 1,287 $ 2,089,277 $ 2,090,564 $ — 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 September 30, 2017 Construction, land & land development $ 39 $ 5 $ 44 $ 30,626 $ 30,670 $ — Other commercial real estate 47 — 47 234,439 234,486 — Total commercial real estate 86 5 91 265,065 265,156 — Residential real estate 257 56 313 111,931 112,244 — Owner-occupied real estate 256 2,500 2,756 122,682 125,438 — Commercial, financial & agricultural 547 1,386 1,933 557,059 558,992 — Consumer 8 6 14 2,633 2,647 — Total purchased non-credit impaired loans $ 1,154 $ 3,953 $ 5,107 $ 1,059,370 $ 1,064,477 $ — December 31, 2016 Construction, land & land development $ 495 $ — $ 495 $ 50,713 $ 51,208 $ — Other commercial real estate 17 56 73 209,458 209,531 — Total commercial real estate 512 56 568 260,171 260,739 — Residential real estate 274 165 439 144,157 144,596 — Owner-occupied real estate 387 1,687 2,074 113,492 115,566 — Commercial, financial & agricultural 144 552 696 35,510 36,206 — Consumer 38 2 40 6,215 6,255 — Total purchased non-credit impaired loans $ 1,355 $ 2,462 $ 3,817 $ 559,545 $ 563,362 $ — 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 September 30, 2017 Construction, land & land development $ 10 $ 1,872 $ 1,882 $ 15,036 $ 16,918 Other commercial real estate 534 3,336 3,870 99,064 102,934 Total commercial real estate 544 5,208 5,752 114,100 119,852 Residential real estate 1,678 2,430 4,108 38,082 42,190 Owner-occupied real estate — 6,162 6,162 20,048 26,210 Commercial, financial & agricultural 243 261 504 14,635 15,139 Consumer 15 — 15 254 269 Total purchased credit impaired loans $ 2,480 $ 14,061 $ 16,541 $ 187,119 $ 203,660 December 31, 2016 Construction, land & land development $ 722 $ 1,853 $ 2,575 $ 13,962 $ 16,537 Other commercial real estate 346 3,148 3,494 57,248 60,742 Total commercial real estate 1,068 5,001 6,069 71,210 77,279 Residential real estate 1,210 2,787 3,997 50,510 54,507 Owner-occupied real estate 661 3,507 4,168 19,812 23,980 Commercial, financial & agricultural 29 61 90 4,443 4,533 Consumer — 5 5 342 347 Total purchased credit impaired loans $ 2,968 $ 11,361 $ 14,329 $ 146,317 $ 160,646 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 8. 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. 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 September 30, 2017 Construction, land & land development $ 433,737 $ 24,628 $ 1,866 $ 137 $ — $ 460,368 Other commercial real estate 885,428 24,134 2,823 3,342 — 915,727 Total commercial real estate 1,319,165 48,762 4,689 3,479 — 1,376,095 Residential real estate 169,972 3,348 615 1,323 — 175,258 Owner-occupied real estate 237,134 22,637 1,083 930 — 261,784 Commercial, financial & agricultural 354,520 8,193 124 714 — 363,551 Leases 61,096 5,669 — — — 66,765 Consumer 60,953 102 66 79 — 61,200 Total organic loans $ 2,202,840 $ 88,711 $ 6,577 $ 6,525 $ — $ 2,304,653 December 31, 2016 Construction, land & land development $ 470,686 $ 24,178 $ 97 $ 5,057 $ — $ 500,018 Other commercial real estate 718,969 35,821 — — — 754,790 Total commercial real estate 1,189,655 59,999 97 5,057 — 1,254,808 Residential real estate 139,393 2,484 460 1,958 — 144,295 Owner-occupied real estate 237,753 14,967 3,577 20 — 256,317 Commercial, financial & agricultural 325,161 920 624 676 — 327,381 Leases 60,849 10,875 — — — 71,724 Consumer 35,844 47 2 145 1 36,039 Total organic loans $ 1,988,655 $ 89,292 $ 4,760 $ 7,856 $ 1 $ 2,090,564 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 September 30, 2017 Construction, land & land development $ 30,205 $ 419 $ — $ 46 $ — $ 30,670 Other commercial real estate 229,919 2,199 1,849 519 — 234,486 Total commercial real estate 260,124 2,618 1,849 565 — 265,156 Residential real estate 107,613 2,446 569 1,616 — 112,244 Owner-occupied real estate 117,516 3,443 1,285 3,194 — 125,438 Commercial, financial & agricultural 473,093 74,032 6,640 5,227 — 558,992 Consumer 2,636 2 — 9 — 2,647 Total purchased non-credit impaired loans $ 960,982 $ 82,541 $ 10,343 $ 10,611 $ — $ 1,064,477 December 31, 2016 Construction, land & land development $ 51,208 $ — $ — $ — $ — $ 51,208 Other commercial real estate 206,515 803 2,157 56 — 209,531 Total commercial real estate 257,723 803 2,157 56 — 260,739 Residential real estate 142,079 1,883 314 320 — 144,596 Owner-occupied real estate 107,096 6,310 — 2,160 — 115,566 Commercial, financial & agricultural 34,747 310 21 1,128 — 36,206 Consumer 6,247 5 — 3 — 6,255 Total purchased non-credit impaired loans $ 547,892 $ 9,311 $ 2,492 $ 3,667 $ — $ 563,362 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 September 30, 2017 Construction, land & land development $ 10,114 $ 863 $ 941 $ 5,000 $ — $ 16,918 Other commercial real estate 78,310 12,435 2,465 9,724 — 102,934 Total commercial real estate 88,424 13,298 3,406 14,724 — 119,852 Residential real estate 22,728 6,523 1,624 11,182 133 42,190 Owner-occupied real estate 7,347 4,940 816 13,104 3 26,210 Commercial, financial & agricultural 2,194 253 9,432 3,242 18 15,139 Consumer 57 30 154 28 — 269 Total purchased credit impaired loans $ 120,750 $ 25,044 $ 15,432 $ 42,280 $ 154 $ 203,660 December 31, 2016 Construction, land & land development $ 7,798 $ 1,150 $ 1,416 $ 6,173 $ — $ 16,537 Other commercial real estate 33,423 13,103 2,770 11,446 — 60,742 Total commercial real estate 41,221 14,253 4,186 17,619 — 77,279 Residential real estate 28,628 10,371 2,840 12,396 272 54,507 Owner-occupied real estate 7,736 4,884 794 10,566 — 23,980 Commercial, financial & agricultural 3,381 310 273 569 — 4,533 Consumer 53 100 173 21 — 347 Total purchased credit impaired loans $ 81,019 $ 29,918 $ 8,266 $ 41,171 $ 272 $ 160,646 Allowance Estimation During the first quarter of 2017, the Company implemented an automated solution broadly deployed throughout the industry for its estimation of the allowance for loan and lease losses on its organic and purchased non-credit impaired loans. No change was made to the allowance estimation for purchased credit impaired loans. No material changes were made to the methodology used. However, the new model does allow for further granularity within our loan pools. The Company validated the new model against its existing model for three quarters prior to implementation. Troubled Debt Restructurings (TDRs) There were no troubled debt restructurings (TDRs) at September 30, 2017 . At December 31, 2016 , TDRs totaled $5.0 million with $148,000 in related allowance. At December 31, 2016 , there was no commitment to extend credit to a borrower 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) : September 30, 2017 September 30, 2016 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 Nine Months Ended Construction, land & land development — $ — $ — 1 $ 4,168 $ 4,168 Other commercial real estate — — — — — — Total commercial real estate — — — 1 4,168 4,168 Commercial & industrial — — — — — — Owner-occupied real estate — — — — — — Residential real estate — — — — — — Consumer & Other — — — — — — Total modifications — $ — $ — 1 $ 4,168 $ 4,168 (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 this loan were an interest rate concession and payment term extension, not principal reductions, the pre-modification and post-modification recorded investment amount is the same. During the nine months ended September 30, 2017 and 2016 , there were no TDRs that subsequently defaulted within twelve months of their modification dates.

Other Real Estate Owned (OREO)

Other Real Estate Owned (OREO)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Other Real Estate Owned (OREO)	NOTE 7: OTHER REAL ESTATE OWNED (OREO) The following table presents other real estate owned ("OREO") by property type at the dates indicated (dollars in thousands) : Other real estate owned September 30, 2017 December 31, 2016 Construction, land development, and other land $ 756 $ 2,393 Commercial and farmland real estate 255 6,960 Residential real estate 260 1,544 Total other real estate owned $ 1,271 $ 10,897 The following table presents OREO by type of loan foreclosure or banking premises transferred into OREO at the dates indicated (dollars in thousands) : Other real estate owned September 30, 2017 December 31, 2016 Organic OREO $ — $ 282 Purchased Credit Impaired OREO 1,271 10,615 Total other real estate owned $ 1,271 $ 10,897 At September 30, 2017 , consumer mortgage loans secured by residential real estate properties totaling $84,000 were in formal foreclosure proceedings.

SBA Servicing Rights

SBA Servicing Rights	9 Months Ended
	Sep. 30, 2017
Transfers and Servicing [Abstract]
SBA Servicing Rights	NOTE 8: 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 months and nine months ended September 30, 2017 , the Company sold SBA loans with unpaid principal balances totaling $10.1 million and $35.1 million , respectively, and recognized $1.2 million and $3.6 million in gains on the loan sales, respectively. During the three and nine months ended September 30, 2016 , the Company sold SBA loans with unpaid principal balances totaling $13.7 million and $38.6 million , respectively, and recognized $1.3 million and $3.9 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 $389,000 and $1.2 million for the three and nine months ended September 30, 2017 , respectively. SBA servicing fees totaled $383,000 and $974,000 for the three and nine months ended September 30, 2016 , respectively. At September 30, 2017 and December 31, 2016 , the Company serviced SBA loans for others with unpaid principal balances totaling $178.2 million and $142.1 million , respectively. The table below summarizes the activity in the SBA servicing rights asset for the periods presented (dollars in thousands) : Three Months Ended Nine Months Ended September 30 September 30 SBA Servicing Rights 2017 2016 2017 2016 Balance, beginning of period $ 3,828 $ 3,165 $ 3,477 $ 2,626 Additions 253 339 850 963 Fair value adjustments (131 ) (229 ) (377 ) (314 ) Balance, end of period $ 3,950 $ 3,275 $ 3,950 $ 3,275 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 September 30, 2017 December 31, 2016 Fair value $ 3,950 $ 3,477 Weighted average discount rate 12.6 % 12.8 % Decline in fair value due to a 100 basis point adverse change $ (141 ) $ (122 ) Decline in fair value due to a 200 basis point adverse change (273 ) (236 ) Prepayment speed 8.4 % 8.0 % Decline in fair value due to a 10% adverse change $ (130 ) $ (108 ) Decline in fair value due to a 20% adverse change (254 ) (210 ) Weighted average remaining life (years) 7.0 7.1 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) : September 30, 2017 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Nine Months Ended September 30, 2017 Serviced for others $ 178,177 $ 76 $ — $ — Held-for-sale 13,956 — — — Held-for-investment 152,000 1,322 8,154 454 Total SBA loans serviced $ 344,133 $ 1,398 $ 8,154 $ 454 December 31, 2016 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Nine Months Ended September 30, 2016 Serviced for others $ 142,069 $ 522 $ — $ — Held-for-sale 16,356 — — — Held-for-investment 144,351 220 5,580 2,120 Total SBA loans serviced $ 302,776 $ 742 $ 5,580 $ 2,120

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	NOTE 9: 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 10 , 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 September 30, 2017 , the termination value of derivatives in a net liability position under these agreements was $11,000 , for which the Company did not post any cash collateral. Although the Company did not breach any provisions at September 30, 2017 , if a breach had occurred, the maximum amount of collateral the Company would have been required to post to counterparties was $11,000 . 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 interest rate swaps and caps at the dates presented (dollars in thousands) : Asset Derivatives (1) Liability Derivatives (1) September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 Derivatives Designated as Hedging Instruments Interest rate swaps and caps $ 1,538 $ 1,774 $ 387 $ 641 Derivatives Not Designated as Hedging Instruments Interest rate swaps $ — $ 19 $ — $ 85 Mortgage derivatives 872 1,362 467 459 (1) All asset derivatives are located in "Other Assets" on the consolidated statements of financial condition and all liability derivatives are located in "Other Liabilities" on the consolidated statements of financial condition. 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 September 30, 2017 , the Company had 91 interest rate swaps with an aggregate notional amount of $157.8 million , designated as fair value hedges associated with the Company's fixed rate loan program. The table below presents the effect of the Company's derivatives in fair value hedging relationships for the periods presented (dollars in thousands) : Three Months Ended Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of gain (loss) recognized in income on derivatives Noninterest income $ 3 $ 977 $ 35 $ (3,396 ) Amount of loss recognized in income on hedged items Noninterest income (55 ) (956 ) (138 ) 3,106 Total net (loss) gain recognized in income on fair value hedge ineffectiveness $ (52 ) $ 21 $ (103 ) $ (290 ) During the three and nine months ended September 30, 2017 , the Company recognized net losses of $52,000 and $103,000 , respectively, related to hedge ineffectiveness on the fair value swaps. During the three and nine months ended September 30, 2016 , the Company recognized a net gain (loss) of $21,000 and $(290,000) , respectively, related to hedge ineffectiveness on the fair value swaps. The Company also recognized a net reduction in interest income of $176,000 and $761,000 for the three and nine months ended September 30, 2017 , respectively, related to the fair value hedges, which includes net settlements on derivatives and any amortization adjustment of the basis in the hedged items. For the three and nine months ended September 30, 2016 , the Company recognized a net reduction in interest income of $460,000 and $1.4 million , respectively, related to the fair value hedges. For the three and nine months ended September 30, 2017 , the Company recognized net losses of $152,000 and $153,000 , respectively, related to the unamortized basis in the hedged items. For the three and nine months ended September 30, 2016 , the Company recognized net losses of $61,000 and $108,000 , respectively, related to the unamortized basis in the hedged items. Cash Flow Hedges The Company uses 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 current cash flow hedges are for the purpose of capping interest rates paid on deposits, which protects 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 . The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (AOCI) and is subsequently reclassified into earnings in the period the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of derivatives that qualify as cash flow hedges is recognized directly in earnings. No hedge ineffectiveness was recognized on the Company's cash flow hedges during the periods ended September 30, 2017 and 2016 . Amounts reported in AOCI related to derivatives are reclassified to interest expense as the interest rate cap premium is amortized over the life of the cap. During the next twelve months, $502,000 is expected to be reclassified as a decrease to net interest income. 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 Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of (loss) gain recognized in AOCI on derivatives (effective portion) OCI $ (30 ) $ 73 $ 50 $ (847 ) Amount of loss reclassified from AOCI into income (effective portion) Interest expense 379 320 1,213 804 Amount of loss recognized in consolidated statements of comprehensive income $ (409 ) $ (247 ) $ (1,163 ) $ (1,651 ) Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At September 30, 2017 , the Company had no interest rate swaps that were not designated as fair value hedges associated with the Company's fixed rate loan program. For the three and nine months ended September 30, 2017 , there were net losses of $68,000 and $124,000 , respectively, recorded in the income statement for the interest rate swaps not designated as hedging instruments. For the three and nine months ended September 30, 2016 , there was a net gain of $21,000 and a net loss of $199,000 , 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 September 30, 2017 and December 31, 2016 , the fair value of mortgage derivative assets was $872,000 and $1.4 million , respectively, and the fair value of mortgage derivative liabilities was $467,000 and $459,000 , respectively. At September 30, 2017 and December 31, 2016 , the Company had approximately $51.2 million and $49.9 million , respectively, of interest rate lock commitments, and $75.8 million and $76.7 million , respectively, of forward commitments for the future delivery of residential mortgage loans. The net loss related to interest rate lock commitments for the three months ended September 30, 2017 was $79,000 , compared to a loss of $430,000 for the same period in 2016 . The net gain s related to interest rate lock commitments were $250,000 and $313,000 for the nine months ended September 30, 2017 and 2016 , respectively. The net loss for forward commitments related to these mortgage loans was $66,000 for the three months ended September 30, 2017 , compared to a net gain of $451,000 for the same period in 2016 . The net loss es for forward commitments were $748,000 and $399,000 for the nine months ended September 30, 2017 and September 30, 2016 , 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 Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of (loss) gain recognized in income on interest rate swaps Noninterest income $ (68 ) $ 21 $ (124 ) $ (199 ) Amount of (loss) gain recognized in income on interest rate lock commitments Noninterest income (79 ) (430 ) 250 313 Amount of (loss) gain recognized in income on forward commitments Noninterest income (66 ) 451 (748 ) (399 ) Total (loss) gain recognized in income on derivatives not designated as hedging instruments $ (213 ) $ 42 $ (622 ) $ (285 )

Balance Sheet Offsetting and Re

Balance Sheet Offsetting and Repurchase Agreements	9 Months Ended
	Sep. 30, 2017
Offsetting [Abstract]
Balance Sheet Offsetting and Repurchase Agreements	NOTE 10: 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) September 30, 2017 Offsetting Assets Interest rate swaps and caps $ 1,538 $ — $ 1,538 $ (377 ) $ (590 ) $ 571 Offsetting Liabilities Interest rate swaps and caps $ 387 $ — $ 387 $ (377 ) $ — $ 10 Repurchase agreements 25,499 — 25,499 — (25,499 ) — Total liabilities $ 25,886 $ — $ 25,886 $ (377 ) $ (25,499 ) $ 10 December 31, 2016 Offsetting Assets Interest rate swaps and caps $ 1,793 $ — $ 1,793 $ (718 ) $ (1,075 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 726 $ — $ 726 $ (718 ) $ — $ 8 Repurchase agreements 25,722 — 25,722 — (25,722 ) — Total liabilities $ 26,448 $ — $ 26,448 $ (718 ) $ (25,722 ) $ 8 (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 September 30, 2017 and December 31, 2016 , securities sold under repurchase agreements were $25.5 million and $25.7 million , respectively, all of which mature on an overnight and continuous basis. At both September 30, 2017 and December 31, 2016 , investment securities pledged for the outstanding repurchase agreements consisted of U.S. government sponsored agency mortgage-backed securities.

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Regulatory Matters	NOTE 11: 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 2017 is common equity equal to 1.25% 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 September 30, 2017 and December 31, 2016 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 September 30, 2017 and December 31, 2016 , 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) : September 30, 2017 December 31, 2016 Actual Required Actual Required Amount Ratio Minimum Amount Amount Ratio Minimum Amount Company Common Equity Tier 1 (CET1) capital ratio $ 543,807 12.21 % $ 200,405 $ 526,282 14.78 % $ 160,258 Tier 1 risk-based capital ratio 543,807 12.21 % 267,207 526,282 14.78 % 213,678 Total risk-based capital ratio 570,649 12.81 % 356,276 552,880 15.52 % 284,904 Tier 1 leverage ratio 543,807 13.37 % 162,706 526,282 14.90 % 141,273 State Bank's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : September 30, 2017 December 31, 2016 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 $ 471,829 10.62 % $ 199,899 $ 288,743 $ 463,164 13.06 % $ 159,535 $ 230,440 Tier 1 risk-based capital ratio 471,829 10.62 % 266,532 355,376 463,164 13.06 % 212,714 283,618 Total risk-based capital ratio 498,671 11.23 % 355,376 444,221 489,762 13.81 % 283,618 354,523 Tier 1 leverage ratio 471,829 11.60 % 162,691 203,364 463,164 13.18 % 140,572 175,715 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 September 30, 2017 , State Bank had no capacity to pay dividends to the Company without prior regulatory approval. At September 30, 2017 , the Company had $60.7 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	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE 12: 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) : September 30, 2017 December 31, 2016 Commitments to extend credit: Fixed $ 56,342 $ 63,166 Variable 897,223 608,176 Letters of credit: Fixed 5,525 6,985 Variable 11,391 3,239 Total commitments $ 970,481 $ 681,566 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 September 30, 2017 , the recourse liability was $297,000 . 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	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	NOTE 13: 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 nine months ended September 30, 2017 and the year ended December 31, 2016 , 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 September 30, 2017 , 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 September 30, 2017 . At September 30, 2017 , the aggregate fair value of the Company's mortgage loans held-for-sale was $33.8 million and the contractual balance including accrued interest was $33.0 million , with a fair value mark totaling $754,000 . The Company recognized a gain of $63,000 and a gain of $545,000 for the three and nine months ended September 30, 2017 , 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 nine months ended September 30, 2016 , the amount recognized related to the change in fair value of the mortgage loans held-for-sale was a loss of $749,000 and a gain of $324,000 , 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 8 for the rollforward 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) : September 30, 2017 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: U.S. Government securities $ — $ 77,375 $ — $ 77,375 States and political subdivisions — 2,859 — 2,859 Residential mortgage-backed securities — nonagency — 127,052 — 127,052 Residential mortgage-backed securities — agency — 602,926 — 602,926 Corporate securities — 110,551 — 110,551 Hedged loans — 154,446 — 154,446 Mortgage loans held-for-sale — 33,787 — 33,787 Mortgage derivatives — 135 737 872 Interest rate swaps and caps — 1,538 — 1,538 SBA servicing rights — — 3,950 3,950 Total recurring assets at fair value $ — $ 1,110,669 $ 4,687 $ 1,115,356 Liabilities: Interest rate swaps and caps $ — $ 387 $ — $ 387 Mortgage derivatives — 128 339 467 Total recurring liabilities at fair value $ — $ 515 $ 339 $ 854 December 31, 2016 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: U.S. Government securities $ — $ 88,649 $ — $ 88,649 States and political subdivisions — 301 — 301 Residential mortgage-backed securities — nonagency — 154,009 — 154,009 Residential mortgage-backed securities — agency — 529,302 — 529,302 Corporate securities — 74,917 — 74,917 Hedged loans — 167,165 — 167,165 Mortgage loans held for sale — 35,813 — 35,813 Mortgage derivatives — 663 699 1,362 Interest rate swaps and caps — 1,793 — 1,793 SBA servicing rights — — 3,477 3,477 Total recurring assets at fair value $ — $ 1,052,612 $ 4,176 $ 1,056,788 Liabilities: Interest rate swaps and caps $ — $ 726 $ — $ 726 Mortgage derivatives — 14 445 459 Total recurring liabilities at fair value $ — $ 740 $ 445 $ 1,185 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 September 30 Nine Months Ended September 30 2017 2017 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 890 $ 385 $ 699 $ 445 Issuances (1) 339 339 1,543 1,167 Settlements and closed loans (1) (492 ) (385 ) (1,505 ) (1,273 ) Balance, end of period $ 737 $ 339 $ 737 $ 339 Three Months Ended September 30 Nine Months Ended September 30 2016 2016 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 1,338 $ 560 $ 651 $ 361 Issuances (1) 427 427 2,084 1,596 Settlements and closed loans (1) (854 ) (560 ) (1,824 ) (1,530 ) Balance, end of period $ 911 $ 427 $ 911 $ 427 (1) The change in fair value, recorded as a component of "mortgage banking income" on the consolidated statements of income, was a loss of $107,000 and a gain of $144,000 for the three months and nine months ended September 30, 2017 , respectively. The change in fair value resulted in a loss of $294,000 and a gain of $194,000 for the three and nine months ended September 30, 2016 , 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 September 30, 2017 Impaired loans $ — $ — $ 10,391 $ 10,391 Total nonrecurring assets at fair value $ — $ — $ 10,391 $ 10,391 December 31, 2016 Impaired loans $ — $ — $ 8,784 $ 8,784 Total nonrecurring assets at fair value $ — $ — $ 8,784 $ 8,784 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 $11.1 million and $9.6 million with respective valuation allowances of $706,000 and $831,000 at September 30, 2017 and December 31, 2016 , 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 September 30, 2017 Other real estate owned $ — $ — $ 1,647 $ 1,647 December 31, 2016 Other real estate owned $ — $ — $ 13,292 $ 13,292 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) : September 30, 2017 December 31, 2016 Other real estate owned: Other real estate owned at fair value $ 1,647 $ 13,292 Estimated selling costs and other adjustments (376 ) (2,395 ) Other real estate owned $ 1,271 $ 10,897 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) : September 30, 2017 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,950 Discounted cash flows Discount rate 9% - 20% (13%) Prepayment speed 4% - 12% (8%) Mortgage derivatives - asset $ 737 Pricing model Pull-through rate 83% Mortgage derivatives - liability $ 339 Pricing model Pull-through rate 83% Impaired loans - collateral dependent $ 10,391 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (6%) Other real estate owned $ 1,647 Third party appraisal Management discount for property type and recent market volatility 0% - 33% (14%) December 31, 2016 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,477 Discounted cash flows Discount rate 9% - 18% (13%) Prepayment speed 3% - 11% (8%) Mortgage derivatives - asset $ 699 Pricing model Pull-through rate 84% Mortgage derivatives - liability $ 445 Pricing model Pull-through rate 84% Impaired loans - collateral dependent $ 8,784 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (9%) Other real estate owned $ 13,292 Third party appraisal Management discount for property type and recent market volatility 0% - 68% (16%) 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 (dollars in thousands) . The methodologies for estimating the fair value of financial assets and financial liabilities measured on a recurring and nonrecurring basis are discussed above. The methodologies for estimating the fair value for other financial assets and financial liabilities are discussed below. The Company has determined the estimated fair value amounts using available market information and appropriate valuation methodologies; however, considerable judgment is required to interpret market data in order to develop the estimates of fair value. Accordingly, the estimates presented below are not necessarily indicative of the amounts the Company could realize in a current market exchange. The use of different market assumptions and/or estimation techniques may have a material effect on the estimated fair value amounts at September 30, 2017 and December 31, 2016 . September 30, 2017 December 31, 2016 Fair Value Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Cash and cash equivalents Level 1 $ 282,239 $ 282,239 $ 149,593 $ 149,593 Investment securities available-for-sale Level 2 920,763 920,763 847,178 847,178 Investment securities held-to-maturity Level 2 & 3 57,867 58,605 67,063 67,435 Loans held-for-sale Level 2 47,743 49,481 52,169 53,770 Loans, net Level 2 & 3 3,545,948 3,572,224 2,787,974 2,820,484 Other real estate owned Level 3 1,271 1,647 10,897 13,292 Interest rate swaps and caps Level 2 1,538 1,538 1,793 1,793 Mortgage derivatives Levels 2 & 3 872 872 1,362 1,362 SBA servicing rights Level 3 3,950 3,950 3,477 3,477 Accrued interest receivable Level 2 14,015 14,015 10,210 10,210 Federal Home Loan Bank stock Level 3 4,651 4,651 5,680 5,680 Liabilities: Deposits Level 2 $ 4,241,085 $ 4,240,594 $ 3,431,165 $ 3,430,405 Federal funds purchased and securities sold under agreements to repurchase Level 2 25,499 25,499 27,673 27,673 FHLB borrowings Level 2 — — 47,014 47,014 Notes payable Level 2 398 398 398 398 Interest rate swaps and caps Level 2 387 387 726 726 Mortgage derivatives Levels 2 & 3 467 467 459 459 Accrued interest payable Level 2 3,023 3,023 2,312 2,312 Cash and Cash Equivalents The carrying amount approximates fair value because of the short maturity of these instruments. Investment Securities Held-to-Maturity Fair values are determined using quoted market prices or dealer quotes in the same manner as investment securities available-for-sale. Organic and Purchased Non-Credit Impaired Loans Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type. The fair value of performing loans is calculated by discounting scheduled cash flows through the estimated maturities using estimated market discount rates that reflect observable market information incorporating the credit, liquidity, yield, and other risks inherent in the loan. The estimate of maturity is based on the Company's historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of the current economic and lending conditions. Purchased Credit Impaired Loans Purchased credit impaired loans are recorded at fair value at the date of acquisition. The fair values of loans with evidence of credit deterioration are recorded net of a nonaccretable discount and an accretable discount. Subsequent decreases to the expected cash flows will generally result in a provision for loan and lease losses. Subsequent increases to the expected cash flows results in a reversal of the provision for loan and lease losses to the extent of prior changes or a reclassification of the difference from the nonaccretable to accretable discount with a positive impact on the accretable discount. Accrued Interest Receivable and Accrued Interest Payable The carrying amounts are a reasonable estimate of fair values. Federal Home Loan Bank Stock Federal Home Loan Bank stock, classified as a restricted equity security, is considered a Level 3 asset as little or no market activity exists for the security; therefore, the security's value is not market observable and is carried at original cost basis as cost approximates fair value. Deposits The fair value of deposits with no stated maturity, such as noninterest-bearing demand deposits, interest-bearing deposits, and savings and money market deposits, is equal to the amount payable on demand. The fair value of time deposits is estimated by discounting the expected life. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. Federal Funds Purchased and Securities Sold Under Repurchase Agreements The fair value of federal funds purchased and securities sold under agreements to repurchase approximates the carrying amount because of the short maturity of these borrowings. FHLB Borrowings The carrying amount approximates fair value because of the short maturity of these instruments. Notes Payable Notes payable are variable rate subordinated debt for which performance is based on the underlying notes receivable. Interest rates adjust according to market value; therefore, the carrying amount approximates fair value.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 14: 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 Nine Months Ended September 30 September 30 2017 2016 2017 2016 Numerator: Net income per consolidated statements of income $ 14,436 $ 12,441 $ 41,197 $ 37,264 Net income allocated to participating securities (389 ) (348 ) (1,095 ) (1,021 ) Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Basic earnings per share computation: Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Weighted average common shares outstanding, including shares considered participating securities 38,969,619 36,895,121 38,928,833 36,953,036 Less: Average participating securities (1,050,866 ) (1,031,938 ) (1,034,448 ) (1,012,634 ) Weighted average shares 37,918,753 35,863,183 37,894,385 35,940,402 Basic earnings per share $ .37 $ .34 $ 1.06 $ 1.01 Diluted earnings per share computation: Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Weighted average common shares outstanding for basic earnings per share 37,918,753 35,863,183 37,894,385 35,940,402 Weighted average dilutive grants 44,388 102,765 49,586 100,253 Weighted average shares and dilutive potential common shares 37,963,141 35,965,948 37,943,971 36,040,655 Diluted earnings per share $ .37 $ .34 $ 1.06 $ 1.01

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income	NOTE 15: 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 September 30, 2017 Balance, beginning of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains (losses) 1,634 — (30 ) 1,604 Amounts reclassified for net (gains) losses realized and included in earnings (3 ) — 379 376 Amortization of net unrealized losses on securities transferred to held-to-maturity — (4 ) — (4 ) Income tax expense 625 — 135 760 Balance, end of period $ 101 $ (135 ) $ (309 ) $ (343 ) September 30, 2016 Balance, beginning of period $ 5,356 $ (173 ) $ (1,629 ) $ 3,554 Other comprehensive income (loss) before income taxes: Net change in unrealized (losses) gains (831 ) — 73 (758 ) Amounts reclassified for net (gains) losses realized and included in earnings (38 ) — 320 282 Amortization of net unrealized losses on securities transferred to-held-to-maturity — (2 ) — (2 ) Income tax (benefit) expense (336 ) — 152 (184 ) Balance, end of period $ 4,823 $ (175 ) $ (1,388 ) $ 3,260 Nine Months Ended September 30, 2017 Balance, beginning of period $ (1,200 ) $ (175 ) $ (1,082 ) $ (2,457 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains 2,148 — 50 2,198 Amounts reclassified for net (gains) losses realized and included in earnings (28 ) — 1,213 1,185 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 40 — 40 Income tax expense 819 — 490 1,309 Balance, end of period $ 101 $ (135 ) $ (309 ) $ (343 ) Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total September 30, 2016 Balance, beginning of period $ (272 ) $ — $ (1,362 ) $ (1,634 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains (losses) 8,584 — (847 ) 7,737 Amounts reclassified for net (gains) losses realized and included in earnings (447 ) — 804 357 Transfer of net unrealized loss from available-for-sale to held-to-maturity 172 (172 ) — — Amortization of net unrealized losses on securities transferred to-held-to-maturity — (3 ) — (3 ) Income tax expense (benefit) 3,214 — (17 ) 3,197 Balance, end of period $ 4,823 $ (175 ) $ (1,388 ) $ 3,260 Reclassifications from AOCI into income for the periods presented are as follows (dollars in thousands) : Three Months Ended Nine Months Ended September 30 September 30 Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income 2017 2016 2017 2016 Investment securities available-for-sale Gain on sale of investment securities $ 3 $ 38 $ 28 $ 447 Income tax expense (1 ) (15 ) (11 ) (173 ) Net income $ 2 $ 23 $ 17 $ 274 Cash flow hedges (effective portion) Interest expense on deposits $ (379 ) $ (320 ) $ (1,213 ) $ (804 ) Income tax benefit 145 124 466 311 Net income $ (234 ) $ (196 ) $ (747 ) $ (493 )

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2017
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 paid by the Company at the acquisition date (dollars in thousands) : As Recorded by NBG Bancorp, Inc. Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 38,146 $ (31,158 ) (a) $ 6,988 Investment securities available-for-sale 5,974 (40 ) (b) 5,934 Loans, net 348,641 (3,645 ) (c) 344,996 Loans held-for-sale 694 — 694 Other real estate owned 69 (5 ) (d) 64 Core deposit intangible — 3,740 (e) 3,740 Premises and equipment, net 7,943 (635 ) (f) 7,308 Bank-owned life insurance 1,499 — 1,499 Other assets 6,542 276 (g) 6,818 Total assets acquired $ 409,508 $ (31,467 ) $ 378,041 Liabilities Deposits: Noninterest-bearing $ 58,161 $ — $ 58,161 Interest-bearing 261,034 (30,711 ) (h) 230,323 Total deposits 319,195 (30,711 ) 288,484 FHLB advances 46,354 (140 ) (i) 46,214 Other liabilities 2,067 — 2,067 Total liabilities assumed 367,616 (30,851 ) 336,765 Net identifiable assets acquired over liabilities assumed $ 41,892 $ (616 ) $ 41,276 Goodwill $ — $ 36,587 $ 36,587 Net assets acquired over liabilities assumed $ 41,892 $ 35,971 $ 77,863 Consideration: State Bank Financial Corporation common shares issued 1,626,648 Purchase price per share of the Company's common stock $ 26.86 Company common stock issued 43,692 Cash exchanged for shares 34,171 Fair value of total consideration transferred $ 77,863 Explanation of fair value adjustments (a) Adjustment reflects the elimination of a deposit account The National Bank of Georgia held with State Bank. (b) 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. (c) Adjustment reflects the fair value adjustment based on State Bank's evaluation of the acquired loan portfolio and includes the adjustment to eliminate the recorded allowance for loan and lease losses. (d) Adjustment reflects the fair value adjustment based on State Bank's evaluation of the acquired other real estate owned portfolio. (e) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (f) Adjustment reflects the fair value adjustment based on appraised values. (g) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (h) Adjustment reflects the elimination of a deposit account The National Bank of Georgia held with State Bank and the fair value adjustment based on State Bank's evaluation of acquired deposits. (i) Adjustment arises since the rates on acquired FHLB advances were lower than the rates available on similar borrowings. Subsequent to the NBG Bancorp acquisition all FHLB advances were paid off. The following table summarizes the assets acquired and liabilities assumed and the consideration paid by the Company at the acquisition date (dollars in thousands) : As Recorded by S Bankshares Inc. Fair Value Adjustments As Recorded by the Company Assets Cash and cash equivalents $ 954 $ — $ 954 Investment securities available-for-sale 13,814 (88 ) (a) 13,726 Loans, net 81,383 (2,344 ) (b) 79,039 Other real estate owned 1,278 (332 ) (c) 946 Core deposit intangible — 1,010 (d) 1,010 Premises and equipment, net 3,132 420 (e) 3,552 Bank-owned life insurance 3,124 — 3,124 Other assets 2,636 1,130 (f) 3,766 Total assets acquired $ 106,321 $ (204 ) $ 106,117 Liabilities Deposits: Noninterest-bearing $ 16,620 $ — $ 16,620 Interest-bearing 76,664 494 (g) 77,158 Total deposits 93,284 494 93,778 Federal funds purchased and securities sold under repurchase agreements 1,951 — 1,951 FHLB advances 800 — 800 Other liabilities 1,104 — 1,104 Total liabilities assumed 97,139 494 97,633 Net identifiable assets acquired over liabilities assumed $ 9,182 $ (698 ) $ 8,484 Goodwill $ — $ 4,140 $ 4,140 Net assets acquired over liabilities assumed $ 9,182 $ 3,442 $ 12,624 Consideration: State Bank Financial Corporation common shares issued 310,596 Purchase price per share of the Company's common stock $ 26.86 Company common stock issued 8,343 Cash exchanged for shares 4,281 Fair value of total consideration transferred $ 12,624 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 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 based on State Bank's evaluation of the acquired other real estate owned portfolio. (d) Adjustment reflects the fair value adjustment to record the estimated core deposit intangible. (e) Adjustment reflects the fair value adjustment based on appraised values. (f) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired other assets. (g) Adjustment reflects the fair value adjustment based on State Bank's evaluation of acquired deposits. 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 S Bankshares had been acquired on January 1, 2016 (dollars in thousands, except per share amounts) . These results combine the historical results of S Bankshares 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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2016 Pro Forma Net interest income $ 120,833 Net income 37,448 Earnings per share: Basic $ 1.00 Diluted 1.00 The following table presents certain pro forma information as if AloStar had been acquired on January 1, 2016 (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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2017 2016 Pro Forma Pro Forma Net interest income $ 163,304 $ 152,606 Net income 47,304 43,599 Earnings per share: Basic $ 1.22 $ 1.18 Diluted 1.21 1.18 The following table presents certain pro forma information as if NBG Bancorp had been acquired on January 1, 2016 (dollars in thousands, except per share amounts) . These results combine the historical results of NBG Bancorp 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, 2016. Merger-related costs are not included in the pro forma statements below. Nine Months Ended September 30 2016 Pro Forma Net interest income $ 129,840 Net income 41,719 Earnings per share: Basic $ 1.08 Diluted 1.08
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 The following is a summary of the purchased credit impaired loans acquired in the NBG Bancorp transaction on December 31, 2016 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 33,584 Contractual cash flows not expected to be collected (nonaccretable difference) (3,736 ) Expected cash flows at acquisition 29,848 Accretable difference (2,799 ) Basis in acquired loans at acquisition - estimated fair value $ 27,049 The following is a summary of the purchased credit impaired loans acquired in the S Bankshares transaction on December 31, 2016 (dollars in thousands) : Purchased Credit Impaired Loans Contractually required principal and interest at acquisition $ 15,966 Contractual cash flows not expected to be collected (nonaccretable difference) (2,805 ) Expected cash flows at acquisition 13,161 Accretable difference (1,377 ) Basis in acquired loans at acquisition - estimated fair value $ 11,784

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities Available-for-Sale	The amortized cost and fair value of securities classified as available-for-sale are as follows (dollars in thousands) : September 30, 2017 December 31, 2016 Investment Securities Available-for-Sale Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. Government securities $ 77,725 $ 2 $ 352 $ 77,375 $ 89,044 $ 70 $ 465 $ 88,649 States and political subdivisions 2,859 — — 2,859 300 1 — 301 Residential mortgage-backed securities — nonagency 123,609 3,559 116 127,052 151,519 3,129 639 154,009 Residential mortgage-backed securities — agency 607,533 430 5,037 602,926 533,479 548 4,725 529,302 Corporate securities 108,874 1,726 49 110,551 74,793 207 83 74,917 Total investment securities available-for-sale $ 920,600 $ 5,717 $ 5,554 $ 920,763 $ 849,135 $ 3,955 $ 5,912 $ 847,178
Held-to-maturity Securities	The amortized cost and fair value of securities classified as held-to-maturity are as follows (dollars in thousands) : September 30, 2017 December 31, 2016 Investment Securities Held-to-Maturity Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Asset-backed securities $ 47,681 $ 424 $ — $ 48,105 $ 56,804 $ 295 $ 14 $ 57,085 Corporate securities 10,186 314 — 10,500 10,259 91 — 10,350 Total investment securities held-to-maturity $ 57,867 $ 738 $ — $ 58,605 $ 67,063 $ 386 $ 14 $ 67,435
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) September 30, 2017 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: U.S. Government securities $ 2,495 $ 75,230 $ — $ — $ 77,725 States and political subdivisions — 1,117 1,742 — 2,859 Residential mortgage-backed securities — nonagency — — — 123,609 123,609 Residential mortgage-backed securities — agency — 32,951 286,764 287,818 607,533 Corporate securities 17,775 75,215 14,000 1,884 108,874 Total debt securities available-for-sale $ 20,270 $ 184,513 $ 302,506 $ 413,311 $ 920,600 Fair Value: U.S. Government securities $ 2,496 $ 74,879 $ — $ — $ 77,375 States and political subdivisions — 1,117 1,742 — 2,859 Residential mortgage-backed securities — nonagency — — — 127,052 127,052 Residential mortgage-backed securities — agency — 32,747 284,321 285,858 602,926 Corporate securities 17,811 75,879 14,763 2,098 110,551 Total debt securities available-for-sale $ 20,307 $ 184,622 $ 300,826 $ 415,008 $ 920,763 Debt Securities Held-to-Maturity Distribution of Maturities (1) September 30, 2017 1 Year or Less 1-5 Years 5-10 Years After 10 Years Total Amortized Cost: Asset-backed securities $ — $ — $ 32,181 $ 15,500 $ 47,681 Corporate securities — — 10,186 — 10,186 Total debt securities held-to-maturity $ — $ — $ 42,367 $ 15,500 $ 57,867 Fair Value: Asset-backed securities $ — $ — $ 32,492 $ 15,613 $ 48,105 Corporate securities — — 10,500 — 10,500 Total debt securities held-to-maturity $ — $ — $ 42,992 $ 15,613 $ 58,605 (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 securities with unrealized losses (dollars in thousands) : Less than 12 Months 12 Months or More Total Investment Securities Available-for-Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2017 U.S. Government securities $ 49,399 $ 166 $ 20,480 $ 186 $ 69,879 $ 352 States and political subdivisions — — — — — — Residential mortgage-backed securities — nonagency 1,912 10 5,986 106 7,898 116 Residential mortgage-backed securities — agency 398,119 4,129 43,932 908 442,051 5,037 Corporate securities 8,369 49 — — 8,369 49 Total temporarily impaired securities $ 457,799 $ 4,354 $ 70,398 $ 1,200 $ 528,197 $ 5,554 December 31, 2016 U.S. Government securities $ 43,958 $ 465 $ — $ — $ 43,958 $ 465 States and political subdivisions — — — — — — Residential mortgage-backed securities — nonagency 29,403 239 23,991 400 53,394 639 Residential mortgage-backed securities — agency 430,490 4,484 18,795 241 449,285 4,725 Corporate securities 22,944 83 — — 22,944 83 Total temporarily impaired securities $ 526,795 $ 5,271 $ 42,786 $ 641 $ 569,581 $ 5,912 Less than 12 Months 12 Months or More Total Investment Securities Held-to-Maturity Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2016 Asset-backed securities $ 6,486 $ 14 $ — $ — $ 6,486 $ 14 Total temporarily impaired securities $ 6,486 $ 14 $ — $ — $ 6,486 $ 14
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 Nine Months Ended September 30 September 30 Securities Available-For-Sale 2017 2016 2017 2016 Proceeds from sales and calls $ 6,810 $ 28,705 $ 71,588 $ 93,584 Gross gains on sales and calls $ 3 $ 38 $ 121 $ 447 Gross losses on sales and calls — — (93 ) — Net realized gains on sales and calls $ 3 $ 38 $ 28 $ 447

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of Loans	Loans, in total, are summarized as follows (dollars in thousands) : Total Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 507,956 $ 567,763 Other commercial real estate 1,253,147 1,025,063 Total commercial real estate 1,761,103 1,592,826 Residential real estate 329,692 343,398 Owner-occupied real estate 413,432 395,863 Commercial, financial & agricultural 937,682 368,120 Leases 66,765 71,724 Consumer 64,116 42,641 Total loans 3,572,790 2,814,572 Allowance for loan and lease losses (26,842 ) (26,598 ) Total loans, net $ 3,545,948 $ 2,787,974 Organic loans, net of related discounts, are summarized as follows (dollars in thousands) : Organic Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 460,368 $ 500,018 Other commercial real estate 915,727 754,790 Total commercial real estate 1,376,095 1,254,808 Residential real estate 175,258 144,295 Owner-occupied real estate 261,784 256,317 Commercial, financial & agricultural 363,551 327,381 Leases 66,765 71,724 Consumer 61,200 36,039 Total organic loans (1) 2,304,653 2,090,564 Allowance for loan and lease losses (22,709 ) (21,086 ) Total organic loans, net $ 2,281,944 $ 2,069,478 (1) Includes net deferred loan fees that totaled approximately $8.9 million and $7.0 million at September 30, 2017 and December 31, 2016 , respectively. Purchased non-credit impaired loans ("PNCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Non-Credit Impaired Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 30,670 $ 51,208 Other commercial real estate 234,486 209,531 Total commercial real estate 265,156 260,739 Residential real estate 112,244 144,596 Owner-occupied real estate 125,438 115,566 Commercial, financial & agricultural 558,992 36,206 Consumer 2,647 6,255 Total purchased non-credit impaired loans (1) 1,064,477 563,362 Allowance for loan and lease losses (900 ) (439 ) Total purchased non-credit impaired loans, net $ 1,063,577 $ 562,923 (1) Includes net discounts that totaled approximately $15.7 million and $10.5 million at September 30, 2017 and December 31, 2016 , respectively. Purchased credit impaired loans ("PCI loans"), net of related discounts, are summarized as follows (dollars in thousands) : Purchased Credit Impaired Loans September 30, 2017 December 31, 2016 Construction, land & land development $ 16,918 $ 16,537 Other commercial real estate 102,934 60,742 Total commercial real estate 119,852 77,279 Residential real estate 42,190 54,507 Owner-occupied real estate 26,210 23,980 Commercial, financial & agricultural 15,139 4,533 Consumer 269 347 Total purchased credit impaired loans 203,660 160,646 Allowance for loan and lease losses (3,233 ) (5,073 ) Total purchased credit impaired loans, net $ 200,427 $ 155,573
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 Nine Months Ended September 30 September 30 Purchased Credit Impaired Loans 2017 2016 2017 2016 Balance, beginning of period $ 130,837 $ 129,100 $ 155,573 $ 137,777 Accretion of fair value discounts 6,520 9,335 23,425 33,039 Fair value of acquired loans 77,551 — 77,551 1,300 Reductions in principal balances resulting from repayments, write-offs and foreclosures (16,009 ) (17,032 ) (57,962 ) (53,078 ) Change in the allowance for loan and lease losses on purchased credit impaired loans 1,528 142 1,840 2,507 Balance, end of period $ 200,427 $ 121,545 $ 200,427 $ 121,545
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 Nine Months Ended September 30 September 30 Changes in Accretable Discount 2017 2016 2017 2016 Balance, beginning of period $ 59,808 $ 75,390 $ 69,301 $ 86,100 Additions from acquisitions 11,664 — 11,664 1,648 Accretion (6,520 ) (9,335 ) (23,425 ) (33,039 ) Transfers to accretable discounts and exit events, net 2,244 5,939 9,656 17,285 Balance, end of period $ 67,196 $ 71,994 $ 67,196 $ 71,994

Allowance for Loan and Lease 27

Allowance for Loan and Lease Losses (ALLL) (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30 2017 2016 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 $ 22,560 $ 667 $ 4,761 $ 27,988 $ 22,008 $ 158 $ 5,433 $ 27,599 Charge-offs (912 ) (152 ) (643 ) (1,707 ) (311 ) (16 ) (223 ) (550 ) Recoveries 106 40 — 146 39 1 — 40 Net (charge-offs) recoveries (806 ) (112 ) (643 ) (1,561 ) (272 ) (15 ) (223 ) (510 ) Provision for loan and lease losses 955 345 (885 ) 415 — 7 81 88 Balance, end of period $ 22,709 $ 900 $ 3,233 $ 26,842 $ 21,736 $ 150 $ 5,291 $ 27,177 Nine Months Ended September 30 2017 2016 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 $ 21,086 $ 439 $ 5,073 $ 26,598 $ 21,224 $ 53 $ 7,798 $ 29,075 Charge-offs (1,988 ) (397 ) (971 ) (3,356 ) (2,858 ) (80 ) (2,345 ) (5,283 ) Recoveries 296 42 — 338 189 62 3,174 3,425 Net recoveries (charge-offs) (1,692 ) (355 ) (971 ) (3,018 ) (2,669 ) (18 ) 829 (1,858 ) Provision for loan and lease losses 3,315 816 (869 ) 3,262 3,181 115 (3,336 ) (40 ) Balance, end of period $ 22,709 $ 900 $ 3,233 $ 26,842 $ 21,736 $ 150 $ 5,291 $ 27,177
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 September 30, 2017 Beginning balance $ 13,337 $ 1,841 $ 2,036 $ 3,663 $ 825 $ 858 $ 22,560 Charge-offs (746 ) — — (98 ) (2 ) (66 ) (912 ) Recoveries — 3 — 20 67 16 106 Provision 469 132 374 97 (194 ) 77 955 Ending balance $ 13,060 $ 1,976 $ 2,410 $ 3,682 $ 696 $ 885 $ 22,709 Nine Months Ended September 30, 2017 Beginning balance $ 11,767 $ 1,786 $ 2,239 $ 4,093 $ 655 $ 546 $ 21,086 Charge-offs (933 ) (48 ) — (240 ) (501 ) (266 ) (1,988 ) Recoveries — 9 — 71 176 40 296 Provision 2,226 229 171 (242 ) 366 565 3,315 Ending balance $ 13,060 $ 1,976 $ 2,410 $ 3,682 $ 696 $ 885 $ 22,709 Three Months Ended September 30, 2016 Beginning balance $ 12,943 $ 1,890 $ 1,982 $ 3,834 $ 881 $ 478 $ 22,008 Charge-offs — (1 ) — (172 ) (112 ) (26 ) (311 ) Recoveries — 2 — 35 2 — 39 Provision (818 ) 2 56 699 (55 ) 116 — Ending balance $ 12,125 $ 1,893 $ 2,038 $ 4,396 $ 716 $ 568 $ 21,736 Nine Months Ended September 30, 2016 Beginning balance $ 13,607 $ 2,053 $ 1,920 $ 2,509 $ 865 $ 270 $ 21,224 Charge-offs (2,125 ) (29 ) — (336 ) (327 ) (41 ) (2,858 ) Recoveries — 5 44 130 9 1 189 Provision 643 (136 ) 74 2,093 169 338 3,181 Ending balance $ 12,125 $ 1,893 $ 2,038 $ 4,396 $ 716 $ 568 $ 21,736 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 September 30, 2017 Commercial real estate $ 69 $ 12,991 $ 13,060 $ 3,417 $ 1,372,678 $ 1,376,095 Residential real estate 360 1,616 1,976 720 174,538 175,258 Owner-occupied real estate 83 2,327 2,410 759 261,025 261,784 Commercial, financial & agricultural 129 3,553 3,682 511 363,040 363,551 Leases — 696 696 — 66,765 66,765 Consumer 37 848 885 75 61,125 61,200 Total organic loans $ 678 $ 22,031 $ 22,709 $ 5,482 $ 2,299,171 $ 2,304,653 December 31, 2016 Commercial real estate $ 201 $ 11,566 $ 11,767 $ 5,057 $ 1,249,751 $ 1,254,808 Residential real estate 413 1,373 1,786 825 143,470 144,295 Owner-occupied real estate — 2,239 2,239 — 256,317 256,317 Commercial, financial & agricultural 146 3,947 4,093 298 327,083 327,381 Leases — 655 655 — 71,724 71,724 Consumer 27 519 546 54 35,985 36,039 Total organic loans $ 787 $ 20,299 $ 21,086 $ 6,234 $ 2,084,330 $ 2,090,564 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 September 30, 2017 Beginning balance $ 145 $ 342 $ 152 $ 26 $ 2 $ 667 Charge-offs (50 ) (7 ) — (91 ) (4 ) (152 ) Recoveries 1 5 — 32 2 40 Provision 93 120 68 61 3 345 Ending balance $ 189 $ 460 $ 220 $ 28 $ 3 $ 900 Nine Months Ended September 30, 2017 Beginning balance $ 88 $ 72 $ 44 $ 235 $ — $ 439 Charge-offs (50 ) (7 ) (80 ) (251 ) (9 ) (397 ) Recoveries 1 5 — 32 4 42 Provision 150 390 256 12 8 816 Ending balance $ 189 $ 460 $ 220 $ 28 $ 3 $ 900 Three Months Ended September 30, 2016 Beginning balance $ — $ — $ — $ 158 $ — $ 158 Charge-offs — (14 ) — — (2 ) (16 ) Recoveries — 1 — — — 1 Provision — 13 — (8 ) 2 7 Ending balance $ — $ — $ — $ 150 $ — $ 150 Nine Months Ended September 30, 2016 Beginning balance $ — $ 53 $ — $ — $ — $ 53 Charge-offs — (76 ) — (1 ) (3 ) (80 ) Recoveries — 45 — — 17 62 Provision — (22 ) — 151 (14 ) 115 Ending balance $ — $ — $ — $ 150 $ — $ 150 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 September 30, 2017 Commercial real estate $ — $ 189 $ 189 $ 525 $ 264,631 $ 265,156 Residential real estate — 460 460 387 111,857 112,244 Owner-occupied real estate — 220 220 2,664 122,774 125,438 Commercial, financial & agricultural 28 — 28 2,031 556,961 558,992 Consumer — 3 3 8 2,639 2,647 Total purchased non-credit impaired loans $ 28 $ 872 $ 900 $ 5,615 $ 1,058,862 $ 1,064,477 December 31, 2016 Commercial real estate $ — $ 88 $ 88 $ 56 $ 260,683 $ 260,739 Residential real estate — 72 72 320 144,276 144,596 Owner-occupied real estate 44 — 44 1,875 113,691 115,566 Commercial, financial & agricultural — 235 235 1,128 35,078 36,206 Consumer — — — 2 6,253 6,255 Total purchased non-credit impaired loans $ 44 $ 395 $ 439 $ 3,381 $ 559,981 $ 563,362 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 September 30, 2017 Beginning balance $ 2,131 $ 968 $ 1,611 $ 37 $ 14 $ 4,761 Charge-offs (168 ) (50 ) (416 ) (6 ) (3 ) (643 ) Recoveries — — — — — — Provision (506 ) 310 (697 ) 5 3 (885 ) Ending balance $ 1,457 $ 1,228 $ 498 $ 36 $ 14 $ 3,233 Nine Months Ended September 30, 2017 Beginning balance $ 2,183 $ 1,196 $ 1,655 $ 38 $ 1 $ 5,073 Charge-offs (401 ) (92 ) (452 ) (22 ) (4 ) (971 ) Recoveries — — — — — — Provision (325 ) 124 (705 ) 20 17 (869 ) Ending balance $ 1,457 $ 1,228 $ 498 $ 36 $ 14 $ 3,233 Three Months Ended September 30, 2016 Beginning balance $ 2,834 $ 1,025 $ 1,502 $ 69 $ 3 $ 5,433 Charge-offs (131 ) (5 ) (87 ) — — (223 ) Recoveries — — — — — — Provision (341 ) 254 173 (4 ) (1 ) 81 Ending balance $ 2,362 $ 1,274 $ 1,588 $ 65 $ 2 $ 5,291 Nine Months Ended September 30, 2016 Beginning balance $ 3,388 $ 1,893 $ 2,449 $ 60 $ 8 $ 7,798 Charge-offs (864 ) (899 ) (298 ) (228 ) (56 ) (2,345 ) Recoveries 2,281 400 207 233 53 3,174 Provision (2,443 ) (120 ) (770 ) — (3 ) (3,336 ) Ending balance $ 2,362 $ 1,274 $ 1,588 $ 65 $ 2 $ 5,291 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 September 30, 2017 Commercial real estate $ 1,129 $ 328 $ 1,457 $ 89,812 $ 30,040 $ 119,852 Residential real estate 153 1,075 1,228 3,058 39,132 42,190 Owner-occupied real estate 353 145 498 14,732 11,478 26,210 Commercial, financial & agricultural 22 14 36 2,345 12,794 15,139 Consumer 14 — 14 134 135 269 Total purchased credit impaired loans $ 1,671 $ 1,562 $ 3,233 $ 110,081 $ 93,579 $ 203,660 December 31, 2016 Commercial real estate $ 760 $ 1,423 $ 2,183 $ 29,387 $ 47,892 $ 77,279 Residential real estate 156 1,040 1,196 1,897 52,610 54,507 Owner-occupied real estate 1,471 184 1,655 8,376 15,604 23,980 Commercial, financial & agricultural 2 36 38 86 4,447 4,533 Consumer — 1 1 8 339 347 Total purchased credit impaired loans $ 2,389 $ 2,684 $ 5,073 $ 39,754 $ 120,892 $ 160,646
Impaired Loans, Organic and Purchased Non-Credit Impaired	Impaired loans, segregated by class of loans, are presented in the following table (dollars in thousands) : September 30, 2017 December 31, 2016 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 $ 5 $ 5 $ — $ 4,565 $ 2,933 $ — Other commercial real estate 4,606 3,800 — 56 56 — Total commercial real estate 4,611 3,805 — 4,621 2,989 — Residential real estate 413 387 — 388 320 — Owner-occupied real estate 3,392 3,257 — 193 188 — Commercial, financial & agricultural 2,012 1,457 — 1,335 1,128 — Consumer 16 8 — 2 2 — Subtotal 10,444 8,914 — 6,539 4,627 — With related allowance recorded: Construction, land & land development 139 137 69 4,277 2,124 201 Other commercial real estate — — — — — — Total commercial real estate 139 137 69 4,277 2,124 201 Residential real estate 782 720 360 891 825 413 Owner-occupied real estate 166 166 83 1,706 1,687 44 Commercial, financial & agricultural 1,127 1,085 157 308 298 146 Consumer 85 75 37 55 54 27 Subtotal 2,299 2,183 706 7,237 4,988 831 Total impaired loans $ 12,743 $ 11,097 $ 706 $ 13,776 $ 9,615 $ 831 (1) Includes loans with SBA guaranteed balances of $4.7 million and $3.0 million at September 30, 2017 and December 31, 2016 , 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) : September 30, 2017 September 30, 2016 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 $ 146 $ — $ 5,062 $ — Other commercial real estate 4,347 — — — Total commercial real estate 4,493 — 5,062 — Residential real estate 1,120 — 1,743 — Owner-occupied real estate 3,446 — — — Commercial, financial & agricultural 2,653 — 1,163 — Consumer 87 — 50 — Total impaired loans $ 11,799 $ — $ 8,018 $ — Nine Months Ended Construction, land & land development $ 2,862 $ — $ 6,070 $ — Other commercial real estate 4,558 — 201 — Total commercial real estate 7,420 — 6,271 — Residential real estate 1,154 — 1,794 — Owner-occupied real estate 3,500 — 148 3 Commercial, financial & agricultural 2,761 1 1,722 24 Consumer 94 — 38 — Total impaired loans $ 14,929 $ 1 $ 9,973 $ 27 (1) The average recorded investment for troubled debt restructurings was $0.0 million and $2.7 million for the three and nine months ended September 30, 2017 , respectively, and was $5.0 million and $6.4 million for the three and nine months ended September 30, 2016 , respectively. (2) The interest income recognized on troubled debt restructurings was $0 for both the three and nine months ended September 30, 2017 , and was $0 and $24,000 for the three and nine months ended September 30, 2016 , respectively.
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 September 30, 2017 December 31, 2016 Construction, land & land development $ 142 $ 5,057 Other commercial real estate 3,800 56 Total commercial real estate 3,942 5,113 Residential real estate 1,107 1,146 Owner-occupied real estate 3,423 1,874 Commercial, financial & agricultural 2,542 1,426 Consumer 83 56 Total nonaccrual loans $ 11,097 $ 9,615
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 September 30, 2017 Construction, land & land development $ 262 $ 45 $ 307 $ 460,061 $ 460,368 $ — Other commercial real estate — — — 915,727 915,727 — Total commercial real estate 262 45 307 1,375,788 1,376,095 — Residential real estate 286 136 422 174,836 175,258 — Owner-occupied real estate 424 593 1,017 260,767 261,784 — Commercial, financial & agricultural 543 437 980 362,571 363,551 — Leases — — — 66,765 66,765 — Consumer 66 22 88 61,112 61,200 — Total organic loans $ 1,581 $ 1,233 $ 2,814 $ 2,301,839 $ 2,304,653 $ — December 31, 2016 Construction, land & land development $ 49 $ 12 $ 61 $ 499,957 $ 500,018 $ — Other commercial real estate — — — 754,790 754,790 — Total commercial real estate 49 12 61 1,254,747 1,254,808 — Residential real estate 157 118 275 144,020 144,295 — Owner-occupied real estate 40 — 40 256,277 256,317 — Commercial, financial & agricultural 247 283 530 326,851 327,381 — Leases — — — 71,724 71,724 — Consumer 350 31 381 35,658 36,039 — Total organic loans $ 843 $ 444 $ 1,287 $ 2,089,277 $ 2,090,564 $ — 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 September 30, 2017 Construction, land & land development $ 39 $ 5 $ 44 $ 30,626 $ 30,670 $ — Other commercial real estate 47 — 47 234,439 234,486 — Total commercial real estate 86 5 91 265,065 265,156 — Residential real estate 257 56 313 111,931 112,244 — Owner-occupied real estate 256 2,500 2,756 122,682 125,438 — Commercial, financial & agricultural 547 1,386 1,933 557,059 558,992 — Consumer 8 6 14 2,633 2,647 — Total purchased non-credit impaired loans $ 1,154 $ 3,953 $ 5,107 $ 1,059,370 $ 1,064,477 $ — December 31, 2016 Construction, land & land development $ 495 $ — $ 495 $ 50,713 $ 51,208 $ — Other commercial real estate 17 56 73 209,458 209,531 — Total commercial real estate 512 56 568 260,171 260,739 — Residential real estate 274 165 439 144,157 144,596 — Owner-occupied real estate 387 1,687 2,074 113,492 115,566 — Commercial, financial & agricultural 144 552 696 35,510 36,206 — Consumer 38 2 40 6,215 6,255 — Total purchased non-credit impaired loans $ 1,355 $ 2,462 $ 3,817 $ 559,545 $ 563,362 $ — 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 September 30, 2017 Construction, land & land development $ 10 $ 1,872 $ 1,882 $ 15,036 $ 16,918 Other commercial real estate 534 3,336 3,870 99,064 102,934 Total commercial real estate 544 5,208 5,752 114,100 119,852 Residential real estate 1,678 2,430 4,108 38,082 42,190 Owner-occupied real estate — 6,162 6,162 20,048 26,210 Commercial, financial & agricultural 243 261 504 14,635 15,139 Consumer 15 — 15 254 269 Total purchased credit impaired loans $ 2,480 $ 14,061 $ 16,541 $ 187,119 $ 203,660 December 31, 2016 Construction, land & land development $ 722 $ 1,853 $ 2,575 $ 13,962 $ 16,537 Other commercial real estate 346 3,148 3,494 57,248 60,742 Total commercial real estate 1,068 5,001 6,069 71,210 77,279 Residential real estate 1,210 2,787 3,997 50,510 54,507 Owner-occupied real estate 661 3,507 4,168 19,812 23,980 Commercial, financial & agricultural 29 61 90 4,443 4,533 Consumer — 5 5 342 347 Total purchased credit impaired loans $ 2,968 $ 11,361 $ 14,329 $ 146,317 $ 160,646
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 September 30, 2017 Construction, land & land development $ 433,737 $ 24,628 $ 1,866 $ 137 $ — $ 460,368 Other commercial real estate 885,428 24,134 2,823 3,342 — 915,727 Total commercial real estate 1,319,165 48,762 4,689 3,479 — 1,376,095 Residential real estate 169,972 3,348 615 1,323 — 175,258 Owner-occupied real estate 237,134 22,637 1,083 930 — 261,784 Commercial, financial & agricultural 354,520 8,193 124 714 — 363,551 Leases 61,096 5,669 — — — 66,765 Consumer 60,953 102 66 79 — 61,200 Total organic loans $ 2,202,840 $ 88,711 $ 6,577 $ 6,525 $ — $ 2,304,653 December 31, 2016 Construction, land & land development $ 470,686 $ 24,178 $ 97 $ 5,057 $ — $ 500,018 Other commercial real estate 718,969 35,821 — — — 754,790 Total commercial real estate 1,189,655 59,999 97 5,057 — 1,254,808 Residential real estate 139,393 2,484 460 1,958 — 144,295 Owner-occupied real estate 237,753 14,967 3,577 20 — 256,317 Commercial, financial & agricultural 325,161 920 624 676 — 327,381 Leases 60,849 10,875 — — — 71,724 Consumer 35,844 47 2 145 1 36,039 Total organic loans $ 1,988,655 $ 89,292 $ 4,760 $ 7,856 $ 1 $ 2,090,564 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 September 30, 2017 Construction, land & land development $ 30,205 $ 419 $ — $ 46 $ — $ 30,670 Other commercial real estate 229,919 2,199 1,849 519 — 234,486 Total commercial real estate 260,124 2,618 1,849 565 — 265,156 Residential real estate 107,613 2,446 569 1,616 — 112,244 Owner-occupied real estate 117,516 3,443 1,285 3,194 — 125,438 Commercial, financial & agricultural 473,093 74,032 6,640 5,227 — 558,992 Consumer 2,636 2 — 9 — 2,647 Total purchased non-credit impaired loans $ 960,982 $ 82,541 $ 10,343 $ 10,611 $ — $ 1,064,477 December 31, 2016 Construction, land & land development $ 51,208 $ — $ — $ — $ — $ 51,208 Other commercial real estate 206,515 803 2,157 56 — 209,531 Total commercial real estate 257,723 803 2,157 56 — 260,739 Residential real estate 142,079 1,883 314 320 — 144,596 Owner-occupied real estate 107,096 6,310 — 2,160 — 115,566 Commercial, financial & agricultural 34,747 310 21 1,128 — 36,206 Consumer 6,247 5 — 3 — 6,255 Total purchased non-credit impaired loans $ 547,892 $ 9,311 $ 2,492 $ 3,667 $ — $ 563,362 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 September 30, 2017 Construction, land & land development $ 10,114 $ 863 $ 941 $ 5,000 $ — $ 16,918 Other commercial real estate 78,310 12,435 2,465 9,724 — 102,934 Total commercial real estate 88,424 13,298 3,406 14,724 — 119,852 Residential real estate 22,728 6,523 1,624 11,182 133 42,190 Owner-occupied real estate 7,347 4,940 816 13,104 3 26,210 Commercial, financial & agricultural 2,194 253 9,432 3,242 18 15,139 Consumer 57 30 154 28 — 269 Total purchased credit impaired loans $ 120,750 $ 25,044 $ 15,432 $ 42,280 $ 154 $ 203,660 December 31, 2016 Construction, land & land development $ 7,798 $ 1,150 $ 1,416 $ 6,173 $ — $ 16,537 Other commercial real estate 33,423 13,103 2,770 11,446 — 60,742 Total commercial real estate 41,221 14,253 4,186 17,619 — 77,279 Residential real estate 28,628 10,371 2,840 12,396 272 54,507 Owner-occupied real estate 7,736 4,884 794 10,566 — 23,980 Commercial, financial & agricultural 3,381 310 273 569 — 4,533 Consumer 53 100 173 21 — 347 Total purchased credit impaired loans $ 81,019 $ 29,918 $ 8,266 $ 41,171 $ 272 $ 160,646
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) : September 30, 2017 September 30, 2016 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 Nine Months Ended Construction, land & land development — $ — $ — 1 $ 4,168 $ 4,168 Other commercial real estate — — — — — — Total commercial real estate — — — 1 4,168 4,168 Commercial & industrial — — — — — — Owner-occupied real estate — — — — — — Residential real estate — — — — — — Consumer & Other — — — — — — Total modifications — $ — $ — 1 $ 4,168 $ 4,168 (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 this loan were an interest rate concession and payment term extension, not principal reductions, the pre-modification and post-modification recorded investment amount is the same.

Other Real Estate Owned (OREO)

Other Real Estate Owned (OREO) (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Schedule of Other Real Estate Owned	The following table presents other real estate owned ("OREO") by property type at the dates indicated (dollars in thousands) : Other real estate owned September 30, 2017 December 31, 2016 Construction, land development, and other land $ 756 $ 2,393 Commercial and farmland real estate 255 6,960 Residential real estate 260 1,544 Total other real estate owned $ 1,271 $ 10,897 The following table presents OREO by type of loan foreclosure or banking premises transferred into OREO at the dates indicated (dollars in thousands) : Other real estate owned September 30, 2017 December 31, 2016 Organic OREO $ — $ 282 Purchased Credit Impaired OREO 1,271 10,615 Total other real estate owned $ 1,271 $ 10,897

SBA Servicing Rights (Tables)

SBA Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2017
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 Nine Months Ended September 30 September 30 SBA Servicing Rights 2017 2016 2017 2016 Balance, beginning of period $ 3,828 $ 3,165 $ 3,477 $ 2,626 Additions 253 339 850 963 Fair value adjustments (131 ) (229 ) (377 ) (314 ) Balance, end of period $ 3,950 $ 3,275 $ 3,950 $ 3,275
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 September 30, 2017 December 31, 2016 Fair value $ 3,950 $ 3,477 Weighted average discount rate 12.6 % 12.8 % Decline in fair value due to a 100 basis point adverse change $ (141 ) $ (122 ) Decline in fair value due to a 200 basis point adverse change (273 ) (236 ) Prepayment speed 8.4 % 8.0 % Decline in fair value due to a 10% adverse change $ (130 ) $ (108 ) Decline in fair value due to a 20% adverse change (254 ) (210 ) Weighted average remaining life (years) 7.0 7.1
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) : September 30, 2017 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Nine Months Ended September 30, 2017 Serviced for others $ 178,177 $ 76 $ — $ — Held-for-sale 13,956 — — — Held-for-investment 152,000 1,322 8,154 454 Total SBA loans serviced $ 344,133 $ 1,398 $ 8,154 $ 454 December 31, 2016 SBA Loans Serviced Unpaid Principal Balance 30 - 89 Days Past Due 90 Days or Greater Past Due Net Charge-offs for the Nine Months Ended September 30, 2016 Serviced for others $ 142,069 $ 522 $ — $ — Held-for-sale 16,356 — — — Held-for-investment 144,351 220 5,580 2,120 Total SBA loans serviced $ 302,776 $ 742 $ 5,580 $ 2,120

Derivative Instruments and He30

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2017
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 interest rate swaps and caps at the dates presented (dollars in thousands) : Asset Derivatives (1) Liability Derivatives (1) September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 Derivatives Designated as Hedging Instruments Interest rate swaps and caps $ 1,538 $ 1,774 $ 387 $ 641 Derivatives Not Designated as Hedging Instruments Interest rate swaps $ — $ 19 $ — $ 85 Mortgage derivatives 872 1,362 467 459 (1) All asset derivatives are located in "Other Assets" on the consolidated statements of financial condition and all liability derivatives are located in "Other Liabilities" on the consolidated statements of financial condition.
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The table below presents the effect of the Company's derivatives in fair value hedging relationships for the periods presented (dollars in thousands) : Three Months Ended Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of gain (loss) recognized in income on derivatives Noninterest income $ 3 $ 977 $ 35 $ (3,396 ) Amount of loss recognized in income on hedged items Noninterest income (55 ) (956 ) (138 ) 3,106 Total net (loss) gain recognized in income on fair value hedge ineffectiveness $ (52 ) $ 21 $ (103 ) $ (290 )
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 Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of (loss) gain recognized in AOCI on derivatives (effective portion) OCI $ (30 ) $ 73 $ 50 $ (847 ) Amount of loss reclassified from AOCI into income (effective portion) Interest expense 379 320 1,213 804 Amount of loss recognized in consolidated statements of comprehensive income $ (409 ) $ (247 ) $ (1,163 ) $ (1,651 )
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 Nine Months Ended September 30 September 30 Interest Rate Products Location 2017 2016 2017 2016 Amount of (loss) gain recognized in income on interest rate swaps Noninterest income $ (68 ) $ 21 $ (124 ) $ (199 ) Amount of (loss) gain recognized in income on interest rate lock commitments Noninterest income (79 ) (430 ) 250 313 Amount of (loss) gain recognized in income on forward commitments Noninterest income (66 ) 451 (748 ) (399 ) Total (loss) gain recognized in income on derivatives not designated as hedging instruments $ (213 ) $ 42 $ (622 ) $ (285 )

Balance Sheet Offsetting and 31

Balance Sheet Offsetting and Repurchase Agreements (Tables)	9 Months Ended
	Sep. 30, 2017
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) September 30, 2017 Offsetting Assets Interest rate swaps and caps $ 1,538 $ — $ 1,538 $ (377 ) $ (590 ) $ 571 Offsetting Liabilities Interest rate swaps and caps $ 387 $ — $ 387 $ (377 ) $ — $ 10 Repurchase agreements 25,499 — 25,499 — (25,499 ) — Total liabilities $ 25,886 $ — $ 25,886 $ (377 ) $ (25,499 ) $ 10 December 31, 2016 Offsetting Assets Interest rate swaps and caps $ 1,793 $ — $ 1,793 $ (718 ) $ (1,075 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 726 $ — $ 726 $ (718 ) $ — $ 8 Repurchase agreements 25,722 — 25,722 — (25,722 ) — Total liabilities $ 26,448 $ — $ 26,448 $ (718 ) $ (25,722 ) $ 8 (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) September 30, 2017 Offsetting Assets Interest rate swaps and caps $ 1,538 $ — $ 1,538 $ (377 ) $ (590 ) $ 571 Offsetting Liabilities Interest rate swaps and caps $ 387 $ — $ 387 $ (377 ) $ — $ 10 Repurchase agreements 25,499 — 25,499 — (25,499 ) — Total liabilities $ 25,886 $ — $ 25,886 $ (377 ) $ (25,499 ) $ 10 December 31, 2016 Offsetting Assets Interest rate swaps and caps $ 1,793 $ — $ 1,793 $ (718 ) $ (1,075 ) $ — Offsetting Liabilities Interest rate swaps and caps $ 726 $ — $ 726 $ (718 ) $ — $ 8 Repurchase agreements 25,722 — 25,722 — (25,722 ) — Total liabilities $ 26,448 $ — $ 26,448 $ (718 ) $ (25,722 ) $ 8 (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)	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 and December 31, 2016 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 September 30, 2017 and December 31, 2016 , 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) : September 30, 2017 December 31, 2016 Actual Required Actual Required Amount Ratio Minimum Amount Amount Ratio Minimum Amount Company Common Equity Tier 1 (CET1) capital ratio $ 543,807 12.21 % $ 200,405 $ 526,282 14.78 % $ 160,258 Tier 1 risk-based capital ratio 543,807 12.21 % 267,207 526,282 14.78 % 213,678 Total risk-based capital ratio 570,649 12.81 % 356,276 552,880 15.52 % 284,904 Tier 1 leverage ratio 543,807 13.37 % 162,706 526,282 14.90 % 141,273 State Bank's regulatory ratios at the dates indicated are presented in the table below (dollars in thousands) : September 30, 2017 December 31, 2016 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 $ 471,829 10.62 % $ 199,899 $ 288,743 $ 463,164 13.06 % $ 159,535 $ 230,440 Tier 1 risk-based capital ratio 471,829 10.62 % 266,532 355,376 463,164 13.06 % 212,714 283,618 Total risk-based capital ratio 498,671 11.23 % 355,376 444,221 489,762 13.81 % 283,618 354,523 Tier 1 leverage ratio 471,829 11.60 % 162,691 203,364 463,164 13.18 % 140,572 175,715

Commitments and Contingent Li33

Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of Commitments	A summary of the Company's commitments is as follows (dollars in thousands) : September 30, 2017 December 31, 2016 Commitments to extend credit: Fixed $ 56,342 $ 63,166 Variable 897,223 608,176 Letters of credit: Fixed 5,525 6,985 Variable 11,391 3,239 Total commitments $ 970,481 $ 681,566

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
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) : September 30, 2017 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: U.S. Government securities $ — $ 77,375 $ — $ 77,375 States and political subdivisions — 2,859 — 2,859 Residential mortgage-backed securities — nonagency — 127,052 — 127,052 Residential mortgage-backed securities — agency — 602,926 — 602,926 Corporate securities — 110,551 — 110,551 Hedged loans — 154,446 — 154,446 Mortgage loans held-for-sale — 33,787 — 33,787 Mortgage derivatives — 135 737 872 Interest rate swaps and caps — 1,538 — 1,538 SBA servicing rights — — 3,950 3,950 Total recurring assets at fair value $ — $ 1,110,669 $ 4,687 $ 1,115,356 Liabilities: Interest rate swaps and caps $ — $ 387 $ — $ 387 Mortgage derivatives — 128 339 467 Total recurring liabilities at fair value $ — $ 515 $ 339 $ 854 December 31, 2016 Quoted Market Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: U.S. Government securities $ — $ 88,649 $ — $ 88,649 States and political subdivisions — 301 — 301 Residential mortgage-backed securities — nonagency — 154,009 — 154,009 Residential mortgage-backed securities — agency — 529,302 — 529,302 Corporate securities — 74,917 — 74,917 Hedged loans — 167,165 — 167,165 Mortgage loans held for sale — 35,813 — 35,813 Mortgage derivatives — 663 699 1,362 Interest rate swaps and caps — 1,793 — 1,793 SBA servicing rights — — 3,477 3,477 Total recurring assets at fair value $ — $ 1,052,612 $ 4,176 $ 1,056,788 Liabilities: Interest rate swaps and caps $ — $ 726 $ — $ 726 Mortgage derivatives — 14 445 459 Total recurring liabilities at fair value $ — $ 740 $ 445 $ 1,185
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	Three Months Ended September 30 Nine Months Ended September 30 2017 2017 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 890 $ 385 $ 699 $ 445 Issuances (1) 339 339 1,543 1,167 Settlements and closed loans (1) (492 ) (385 ) (1,505 ) (1,273 ) Balance, end of period $ 737 $ 339 $ 737 $ 339 Three Months Ended September 30 Nine Months Ended September 30 2016 2016 Mortgage Derivatives Other Assets Other Liabilities Other Assets Other Liabilities Balance, beginning of period $ 1,338 $ 560 $ 651 $ 361 Issuances (1) 427 427 2,084 1,596 Settlements and closed loans (1) (854 ) (560 ) (1,824 ) (1,530 ) Balance, end of period $ 911 $ 427 $ 911 $ 427 (1) The change in fair value, recorded as a component of "mortgage banking income" on the consolidated statements of income, was a loss of $107,000 and a gain of $144,000 for the three months and nine months ended September 30, 2017 , respectively. The change in fair value resulted in a loss of $294,000 and a gain of $194,000 for the three and nine months ended September 30, 2016 , 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 September 30, 2017 Impaired loans $ — $ — $ 10,391 $ 10,391 Total nonrecurring assets at fair value $ — $ — $ 10,391 $ 10,391 December 31, 2016 Impaired loans $ — $ — $ 8,784 $ 8,784 Total nonrecurring assets at fair value $ — $ — $ 8,784 $ 8,784
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 September 30, 2017 Other real estate owned $ — $ — $ 1,647 $ 1,647 December 31, 2016 Other real estate owned $ — $ — $ 13,292 $ 13,292
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) : September 30, 2017 December 31, 2016 Other real estate owned: Other real estate owned at fair value $ 1,647 $ 13,292 Estimated selling costs and other adjustments (376 ) (2,395 ) Other real estate owned $ 1,271 $ 10,897
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) : September 30, 2017 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,950 Discounted cash flows Discount rate 9% - 20% (13%) Prepayment speed 4% - 12% (8%) Mortgage derivatives - asset $ 737 Pricing model Pull-through rate 83% Mortgage derivatives - liability $ 339 Pricing model Pull-through rate 83% Impaired loans - collateral dependent $ 10,391 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (6%) Other real estate owned $ 1,647 Third party appraisal Management discount for property type and recent market volatility 0% - 33% (14%) December 31, 2016 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) SBA servicing rights $ 3,477 Discounted cash flows Discount rate 9% - 18% (13%) Prepayment speed 3% - 11% (8%) Mortgage derivatives - asset $ 699 Pricing model Pull-through rate 84% Mortgage derivatives - liability $ 445 Pricing model Pull-through rate 84% Impaired loans - collateral dependent $ 8,784 Third party appraisal Management discount for property type and recent market volatility 0% - 50% (9%) Other real estate owned $ 13,292 Third party appraisal Management discount for property type and recent market volatility 0% - 68% (16%)
Fair Value Measurements, Recurring and Nonrecurring	The following table includes the estimated fair value of the Company's financial assets and financial liabilities (dollars in thousands) . The methodologies for estimating the fair value of financial assets and financial liabilities measured on a recurring and nonrecurring basis are discussed above. The methodologies for estimating the fair value for other financial assets and financial liabilities are discussed below. The Company has determined the estimated fair value amounts using available market information and appropriate valuation methodologies; however, considerable judgment is required to interpret market data in order to develop the estimates of fair value. Accordingly, the estimates presented below are not necessarily indicative of the amounts the Company could realize in a current market exchange. The use of different market assumptions and/or estimation techniques may have a material effect on the estimated fair value amounts at September 30, 2017 and December 31, 2016 . September 30, 2017 December 31, 2016 Fair Value Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Cash and cash equivalents Level 1 $ 282,239 $ 282,239 $ 149,593 $ 149,593 Investment securities available-for-sale Level 2 920,763 920,763 847,178 847,178 Investment securities held-to-maturity Level 2 & 3 57,867 58,605 67,063 67,435 Loans held-for-sale Level 2 47,743 49,481 52,169 53,770 Loans, net Level 2 & 3 3,545,948 3,572,224 2,787,974 2,820,484 Other real estate owned Level 3 1,271 1,647 10,897 13,292 Interest rate swaps and caps Level 2 1,538 1,538 1,793 1,793 Mortgage derivatives Levels 2 & 3 872 872 1,362 1,362 SBA servicing rights Level 3 3,950 3,950 3,477 3,477 Accrued interest receivable Level 2 14,015 14,015 10,210 10,210 Federal Home Loan Bank stock Level 3 4,651 4,651 5,680 5,680 Liabilities: Deposits Level 2 $ 4,241,085 $ 4,240,594 $ 3,431,165 $ 3,430,405 Federal funds purchased and securities sold under agreements to repurchase Level 2 25,499 25,499 27,673 27,673 FHLB borrowings Level 2 — — 47,014 47,014 Notes payable Level 2 398 398 398 398 Interest rate swaps and caps Level 2 387 387 726 726 Mortgage derivatives Levels 2 & 3 467 467 459 459 Accrued interest payable Level 2 3,023 3,023 2,312 2,312

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
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 Nine Months Ended September 30 September 30 2017 2016 2017 2016 Numerator: Net income per consolidated statements of income $ 14,436 $ 12,441 $ 41,197 $ 37,264 Net income allocated to participating securities (389 ) (348 ) (1,095 ) (1,021 ) Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Basic earnings per share computation: Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Weighted average common shares outstanding, including shares considered participating securities 38,969,619 36,895,121 38,928,833 36,953,036 Less: Average participating securities (1,050,866 ) (1,031,938 ) (1,034,448 ) (1,012,634 ) Weighted average shares 37,918,753 35,863,183 37,894,385 35,940,402 Basic earnings per share $ .37 $ .34 $ 1.06 $ 1.01 Diluted earnings per share computation: Net income allocated to common stock $ 14,047 $ 12,093 $ 40,102 $ 36,243 Weighted average common shares outstanding for basic earnings per share 37,918,753 35,863,183 37,894,385 35,940,402 Weighted average dilutive grants 44,388 102,765 49,586 100,253 Weighted average shares and dilutive potential common shares 37,963,141 35,965,948 37,943,971 36,040,655 Diluted earnings per share $ .37 $ .34 $ 1.06 $ 1.01

Accumulated Other Comprehensi36

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 Balance, beginning of period $ (905 ) $ (131 ) $ (523 ) $ (1,559 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains (losses) 1,634 — (30 ) 1,604 Amounts reclassified for net (gains) losses realized and included in earnings (3 ) — 379 376 Amortization of net unrealized losses on securities transferred to held-to-maturity — (4 ) — (4 ) Income tax expense 625 — 135 760 Balance, end of period $ 101 $ (135 ) $ (309 ) $ (343 ) September 30, 2016 Balance, beginning of period $ 5,356 $ (173 ) $ (1,629 ) $ 3,554 Other comprehensive income (loss) before income taxes: Net change in unrealized (losses) gains (831 ) — 73 (758 ) Amounts reclassified for net (gains) losses realized and included in earnings (38 ) — 320 282 Amortization of net unrealized losses on securities transferred to-held-to-maturity — (2 ) — (2 ) Income tax (benefit) expense (336 ) — 152 (184 ) Balance, end of period $ 4,823 $ (175 ) $ (1,388 ) $ 3,260 Nine Months Ended September 30, 2017 Balance, beginning of period $ (1,200 ) $ (175 ) $ (1,082 ) $ (2,457 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains 2,148 — 50 2,198 Amounts reclassified for net (gains) losses realized and included in earnings (28 ) — 1,213 1,185 Amortization of net unrealized losses on securities transferred to-held-to-maturity — 40 — 40 Income tax expense 819 — 490 1,309 Balance, end of period $ 101 $ (135 ) $ (309 ) $ (343 ) Investment Securities Available-for-Sale Held-to-Maturity Securities Transferred from Available-For-Sale Cash Flow Hedges (Effective Portion) Total September 30, 2016 Balance, beginning of period $ (272 ) $ — $ (1,362 ) $ (1,634 ) Other comprehensive income (loss) before income taxes: Net change in unrealized gains (losses) 8,584 — (847 ) 7,737 Amounts reclassified for net (gains) losses realized and included in earnings (447 ) — 804 357 Transfer of net unrealized loss from available-for-sale to held-to-maturity 172 (172 ) — — Amortization of net unrealized losses on securities transferred to-held-to-maturity — (3 ) — (3 ) Income tax expense (benefit) 3,214 — (17 ) 3,197 Balance, end of period $ 4,823 $ (175 ) $ (1,388 ) $ 3,260
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 Nine Months Ended September 30 September 30 Reclassifications from AOCI into income and affected line items on Consolidated Statements of Income 2017 2016 2017 2016 Investment securities available-for-sale Gain on sale of investment securities $ 3 $ 38 $ 28 $ 447 Income tax expense (1 ) (15 ) (11 ) (173 ) Net income $ 2 $ 23 $ 17 $ 274 Cash flow hedges (effective portion) Interest expense on deposits $ (379 ) $ (320 ) $ (1,213 ) $ (804 ) Income tax benefit 145 124 466 311 Net income $ (234 ) $ (196 ) $ (747 ) $ (493 )

Acquisitions - Narrative (Deta

Acquisitions - Narrative (Details) $ / shares in Units, $ in Thousands	Sep. 30, 2017USD ($)$ / shares	Dec. 31, 2016USD ($)$ / shares	Oct. 31, 2017USD ($)	Feb. 28, 2017USD ($)	Sep. 29, 2017USD ($)	Dec. 30, 2016USD ($)
Business Acquisition [Line Items]
Goodwill	$ 84,564	$ 77,084
AloStar Bank of Commerce
Business Acquisition [Line Items]
Conversion price per share (in dollars per share) | $ / shares	$ 24.26
Total consideration paid	$ 194,969
Goodwill	7,088				$ 0
Cash consideration paid	194,969
NBG Bancorp, Inc.
Business Acquisition [Line Items]
Conversion price per share (in dollars per share) | $ / shares		$ 45.45
Total consideration paid		$ 77,863		$ 77,900
Goodwill		$ 36,587				$ 0
Right to convert to State Bank shares, conversion ratio		2.1642
Equity interests acquired in exchange for cash (as a percent)		50.00%
Equity interests acquired in exchange for common stock (as a percent)		50.00%
Cash consideration paid		$ 34,171		34,200
Common stock issued as part of consideration paid		$ 43,692		$ 43,700
S Bankshares, Inc.
Business Acquisition [Line Items]
Conversion price per share (in dollars per share) | $ / shares		$ 56.70
Total consideration paid		$ 12,624
Goodwill		$ 4,140				$ 0
Right to convert to State Bank shares, conversion ratio		2.7444
Equity interests acquired in exchange for cash (as a percent)		40.00%
Equity interests acquired in exchange for common stock (as a percent)		60.00%
Cash consideration paid		$ 4,281
Common stock issued as part of consideration paid		8,343
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
Purchased Non-Credit Impaired Loans | NBG Bancorp, Inc.
Business Acquisition [Line Items]
Purchased non-credit impaired loans acquired		317,900
Purchased non-credit impaired loans acquired, contractual balance		350,000
Purchased non-credit impaired loans acquired, estimated uncollectible		4,400
Purchased Non-Credit Impaired Loans | S Bankshares, Inc.
Business Acquisition [Line Items]
Purchased non-credit impaired loans acquired		67,300
Purchased non-credit impaired loans acquired, contractual balance		77,000
Purchased non-credit impaired loans acquired, estimated uncollectible		$ 1,300
Subsequent Event | AloStar Bank of Commerce
Business Acquisition [Line Items]
Total consideration paid			$ 195,000

Acquisitions - Assets Acquired

Acquisitions - Assets Acquired and Liabilities Assumed - AloStar Bank of Commerce (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 29, 2017	Dec. 31, 2016
Liabilities
Goodwill	$ 84,564		$ 77,084
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 exchanged for shares	194,969
Fair value of total consideration transferred	$ 194,969

Acquisitions - Assets Acquir39

Acquisitions - Assets Acquired and Liabilities Assumed - NBG Bancorp, Inc. (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2016	Feb. 28, 2017	Sep. 30, 2017	Dec. 30, 2016
Liabilities
Goodwill	$ 77,084		$ 84,564
NBG Bancorp, Inc.
Assets
Cash and cash equivalents	6,988			$ 38,146
Investment securities available-for-sale	5,934			5,974
Loans, net	344,996			348,641
Loans held-for-sale	694			694
Other real estate owned	64			69
Core deposit intangible	3,740			0
Premises and equipment, net	7,308			7,943
Bank-owned life insurance	1,499			1,499
Other assets	6,818			6,542
Total assets acquired	378,041			409,508
Liabilities
Noninterest-bearing	58,161			58,161
Interest-bearing	230,323			261,034
Total deposits	288,484			319,195
FHLB advances	46,214			46,354
Other liabilities	2,067			2,067
Total liabilities assumed	336,765			367,616
Net identifiable assets acquired over liabilities assumed	41,276			41,892
Goodwill	36,587			0
Net assets acquired over liabilities assumed	77,863			$ 41,892
Assets
Cash and cash equivalents	(31,158)
Investment securities available-for-sale	(40)
Loans, net	(3,645)
Loans held-for-sale	0
Other real estate owned	(5)
Core deposit intangible	3,740
Premises and equipment, net	(635)
Bank-owned life insurance	0
Other assets	276
Total assets acquired	(31,467)
Liabilities
Noninterest-bearing	0
Interest-bearing	(30,711)
Total deposits	(30,711)
FHLB advances	(140)
Other liabilities	0
Total liabilities assumed	(30,851)
Net identifiable assets acquired over liabilities assumed	(616)
Goodwill	36,587
Net assets acquired over liabilities assumed	$ 35,971
Consideration:
State Bank Financial Corporation common shares issued (in shares)	1,626,648
Purchase price per share of the Company's common stock (in dollars per share)	$ 26.86
Company common stock issued	$ 43,692	$ 43,700
Cash exchanged for shares	34,171	34,200
Fair value of total consideration transferred	$ 77,863	$ 77,900

Acquisitions - Assets Acquir40

Acquisitions - Assets Acquired and Liabilities Assumed - S Bankshares, Inc. (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2016	Sep. 30, 2017	Dec. 30, 2016
Liabilities
Goodwill	$ 77,084	$ 84,564
S Bankshares, Inc.
Assets
Cash and cash equivalents	954		$ 954
Investment securities available-for-sale	13,726		13,814
Loans, net	79,039		81,383
Other real estate owned	946		1,278
Core deposit intangible	1,010		0
Premises and equipment, net	3,552		3,132
Bank-owned life insurance	3,124		3,124
Other assets	3,766		2,636
Total assets acquired	106,117		106,321
Liabilities
Noninterest-bearing	16,620		16,620
Interest-bearing	77,158		76,664
Total deposits	93,778		93,284
Federal funds purchased and securities sold under repurchase agreements	1,951		1,951
FHLB advances	800		800
Other liabilities	1,104		1,104
Total liabilities assumed	97,633		97,139
Net identifiable assets acquired over liabilities assumed	8,484		9,182
Goodwill	4,140		0
Net assets acquired over liabilities assumed	12,624		$ 9,182
Fair Value Adjustments
Cash and cash equivalents	0
Investment securities available-for-sale	(88)
Loans, net	(2,344)
Other real estate owned	(332)
Core deposit intangible	1,010
Premises and equipment, net	420
Bank-owned life insurance	0
Other assets	1,130
Total assets acquired	(204)
Noninterest-bearing	0
Interest-bearing	494
Total deposits	494
Federal funds purchased and securities sold under repurchase agreements	0
FHLB advances	0
Other liabilities	0
Total liabilities assumed	494
Net identifiable assets acquired over liabilities assumed	(698)
Goodwill	4,140
Net assets acquired over liabilities assumed	$ 3,442
Consideration:
State Bank Financial Corporation common shares issued (in shares)	310,596
Purchase price per share of the Company's common stock (in dollars per share)	$ 26.86
Company common stock issued	$ 8,343
Cash exchanged for shares	4,281
Fair value of total consideration transferred	$ 12,624

Acquisitions - Pro Forma Infor

Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
AloStar Bank of Commerce
Pro Forma
Net interest income, Pro Forma	$ 163,304	$ 152,606
Net income, Pro Forma	$ 47,304	$ 43,599
Earnings per share:
Earnings per share, basic (in dollars per share)	$ 1.22	$ 1.18
Earnings per share, diluted (in dollars per share)	$ 1.21	$ 1.18
NBG Bancorp, Inc.
Pro Forma
Net interest income, Pro Forma		$ 129,840
Net income, Pro Forma		$ 41,719
Earnings per share:
Earnings per share, basic (in dollars per share)		$ 1.08
Earnings per share, diluted (in dollars per share)		$ 1.08
S Bankshares, Inc.
Pro Forma
Net interest income, Pro Forma		$ 120,833
Net income, Pro Forma		$ 37,448
Earnings per share:
Earnings per share, basic (in dollars per share)		$ 1
Earnings per share, diluted (in dollars per share)		$ 1

Acquisitions - Purchased Credi

Acquisitions - Purchased Credit Impaired Loans Acquired (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
AloStar Bank of Commerce
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
NBG Bancorp, Inc.
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition		$ 33,584
Contractual cash flows not expected to be collected (nonaccretable difference)		(3,736)
Expected cash flows at acquisition		29,848
Accretable difference		(2,799)
Basis in acquired loans at acquisition - estimated fair value		27,049
S Bankshares, Inc.
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition		15,966
Contractual cash flows not expected to be collected (nonaccretable difference)		(2,805)
Expected cash flows at acquisition		13,161
Accretable difference		(1,377)
Basis in acquired loans at acquisition - estimated fair value		$ 11,784

Investment Securities - Availa

Investment Securities - Available-for-Sale Reconciliation (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 920,600	$ 849,135
Unrealized Gains	5,717	3,955
Unrealized Losses	5,554	5,912
Fair Value	920,763	847,178
U.S. Government securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	77,725	89,044
Unrealized Gains	2	70
Unrealized Losses	352	465
Fair Value	77,375	88,649
States and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,859	300
Unrealized Gains	0	1
Unrealized Losses	0	0
Fair Value	2,859	301
Residential mortgage-backed securities — nonagency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	123,609	151,519
Unrealized Gains	3,559	3,129
Unrealized Losses	116	639
Fair Value	127,052	154,009
Residential mortgage-backed securities — agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	607,533	533,479
Unrealized Gains	430	548
Unrealized Losses	5,037	4,725
Fair Value	602,926	529,302
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	108,874	74,793
Unrealized Gains	1,726	207
Unrealized Losses	49	83
Fair Value	$ 110,551	$ 74,917

Investment Securities - Held-t

Investment Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 57,867	$ 67,063
Unrealized Gains	738	386
Unrealized Losses	0	14
Investment securities held-to-maturity - fair value	58,605	67,435
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	47,681	56,804
Unrealized Gains	424	295
Unrealized Losses	0	14
Investment securities held-to-maturity - fair value	48,105	57,085
Corporate securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	10,186	10,259
Unrealized Gains	314	91
Unrealized Losses	0	0
Investment securities held-to-maturity - fair value	$ 10,500	$ 10,350

Investment Securities - Schedu

Investment Securities - Schedule of Contractual Maturities of Investment Securities Available for Sale (Details) $ in Thousands	Sep. 30, 2017USD ($)
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	$ 20,270
Due 1-5 Years, Amortized Cost	184,513
Due 5-10 Years, Amortized Cost	302,506
Due After 10 Years, Amortized Cost	413,311
Amortized Cost	920,600
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	20,307
Due 1-5 Years, Fair Value	184,622
Due 5-10 Years, Fair Value	300,826
Due After 10 Years, Fair Value	415,008
Fair Value	920,763
U.S. Government securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	2,495
Due 1-5 Years, Amortized Cost	75,230
Due 5-10 Years, Amortized Cost	0
Due After 10 Years, Amortized Cost	0
Amortized Cost	77,725
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	2,496
Due 1-5 Years, Fair Value	74,879
Due 5-10 Years, Fair Value	0
Due After 10 Years, Fair Value	0
Fair Value	77,375
States and political subdivisions
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	1,117
Due 5-10 Years, Amortized Cost	1,742
Due After 10 Years, Amortized Cost	0
Amortized Cost	2,859
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	1,117
Due 5-10 Years, Fair Value	1,742
Due After 10 Years, Fair Value	0
Fair Value	2,859
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	0
Due After 10 Years, Amortized Cost	123,609
Amortized Cost	123,609
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	0
Due After 10 Years, Fair Value	127,052
Fair Value	127,052
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	0
Due 1-5 Years, Amortized Cost	32,951
Due 5-10 Years, Amortized Cost	286,764
Due After 10 Years, Amortized Cost	287,818
Amortized Cost	607,533
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	32,747
Due 5-10 Years, Fair Value	284,321
Due After 10 Years, Fair Value	285,858
Fair Value	602,926
Corporate securities
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Amortized Cost	17,775
Due 1-5 Years, Amortized Cost	75,215
Due 5-10 Years, Amortized Cost	14,000
Due After 10 Years, Amortized Cost	1,884
Amortized Cost	108,874
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due 1 Year or Less, Fair Value	17,811
Due 1-5 Years, Fair Value	75,879
Due 5-10 Years, Fair Value	14,763
Due After 10 Years, Fair Value	2,098
Fair Value	$ 110,551

Investment Securities - Held46

Investment Securities - Held-to-maturity Security Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost:
1 Year or Less	$ 0
1-5 Years	0
5-10 Years	42,367
After 10 Years	15,500
Amortized Cost	57,867	$ 67,063
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	42,992
After 10 Years	15,613
Total debt securities held-to-maturity	58,605	67,435
Asset-backed securities
Amortized Cost:
1 Year or Less	0
1-5 Years	0
5-10 Years	32,181
After 10 Years	15,500
Amortized Cost	47,681	56,804
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	32,492
After 10 Years	15,613
Total debt securities held-to-maturity	48,105	57,085
Corporate securities
Amortized Cost:
1 Year or Less	0
1-5 Years	0
5-10 Years	10,186
After 10 Years	0
Amortized Cost	10,186	10,259
Fair Value:
1 Year or Less	0
1-5 Years	0
5-10 Years	10,500
After 10 Years	0
Total debt securities held-to-maturity	$ 10,500	$ 10,350

Investment Securities - Summar

Investment Securities - Summary of Gross Unrealized Losses and Fair Value of Investments with Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 457,799	$ 526,795
Less than 12 Months, Unrealized Losses	4,354	5,271
12 Months or More, Fair Value	70,398	42,786
12 Months or More, Unrealized Losses	1,200	641
Total, Fair Value	528,197	569,581
Total, Unrealized Losses	5,554	5,912
U.S. Government securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	49,399	43,958
Less than 12 Months, Unrealized Losses	166	465
12 Months or More, Fair Value	20,480	0
12 Months or More, Unrealized Losses	186	0
Total, Fair Value	69,879	43,958
Total, Unrealized Losses	352	465
States and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total, Fair Value	0	0
Total, Unrealized Losses	0	0
Residential mortgage-backed securities — nonagency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,912	29,403
Less than 12 Months, Unrealized Losses	10	239
12 Months or More, Fair Value	5,986	23,991
12 Months or More, Unrealized Losses	106	400
Total, Fair Value	7,898	53,394
Total, Unrealized Losses	116	639
Residential mortgage-backed securities — agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	398,119	430,490
Less than 12 Months, Unrealized Losses	4,129	4,484
12 Months or More, Fair Value	43,932	18,795
12 Months or More, Unrealized Losses	908	241
Total, Fair Value	442,051	449,285
Total, Unrealized Losses	5,037	4,725
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	8,369	22,944
Less than 12 Months, Unrealized Losses	49	83
12 Months or More, Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total, Fair Value	8,369	22,944
Total, Unrealized Losses	$ 49	$ 83

Investment Securities - Held48

Investment Securities - Held-to-maturity Securities, Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2016USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	$ 6,486
Less than 12 months, Unrealized Losses	14
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Total, Fair Value	6,486
Total, Unrealized Losses	14
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, Fair Value	6,486
Less than 12 months, Unrealized Losses	14
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Total, Fair Value	6,486
Total, Unrealized Losses	$ 14

Investment Securities - Gains

Investment Securities - Gains and Losses on Investment Securities Available-for-Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales and calls	$ 6,810	$ 28,705	$ 71,588	$ 93,584
Gross gains on sales and calls	3	38	121	447
Gross losses on sales and calls	0	0	(93)	0
Net realized gains on sales and calls	$ 3	$ 38	$ 28	$ 447

Investment Securities - Narrat

Investment Securities - Narrative (Details) $ in Millions	Sep. 30, 2017USD ($)investment_security	Dec. 31, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of investments in unrealized loss position (investment securities) | investment_security	120
Available-for-sale securities pledged as collateral | $	$ 408.9	$ 368.3

Loans - Summary (Details)

Loans - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 3,572,790		$ 2,814,572
Allowance for loan and lease losses	(26,842)	$ (27,988)	(26,598)	$ (27,177)	$ (27,599)	$ (29,075)
Loans, net	3,545,948		2,787,974
Total commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,761,103		1,592,826
Total commercial real estate | Construction, land & land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	507,956		567,763
Total commercial real estate | Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,253,147		1,025,063
Residential real estate | Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	329,692		343,398
Owner-occupied real estate | Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	413,432		395,863
Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	937,682		368,120
Leases
Loans and Leases Receivable Disclosure [Line Items]
Loans	66,765		71,724
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 64,116		$ 42,641

Loans - Organic (Details)

Loans - Organic (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Loans
Loans	$ 3,572,790		$ 2,814,572
Allowance for loan and lease losses	(26,842)	$ (27,988)	(26,598)	$ (27,177)	$ (27,599)	$ (29,075)
Loans, net	3,545,948		2,787,974
Net deferred loan fees	8,900		7,000
Total commercial real estate
Loans
Loans	1,761,103		1,592,826
Total commercial real estate | Construction, land & land development
Loans
Loans	507,956		567,763
Total commercial real estate | Other commercial real estate
Loans
Loans	1,253,147		1,025,063
Residential real estate | Real estate
Loans
Loans	329,692		343,398
Owner-occupied real estate | Real estate
Loans
Loans	413,432		395,863
Commercial, financial & agricultural
Loans
Loans	937,682		368,120
Leases
Loans
Loans	66,765		71,724
Consumer
Loans
Loans	64,116		42,641
Organic Loans
Loans
Loans	2,304,653		2,090,564
Allowance for loan and lease losses	(22,709)	(22,560)	(21,086)	(21,736)	(22,008)	(21,224)
Loans, net	2,281,944		2,069,478
Organic Loans | Total commercial real estate
Loans
Loans	1,376,095		1,254,808
Allowance for loan and lease losses	(13,060)	(13,337)	(11,767)	(12,125)	(12,943)	(13,607)
Organic Loans | Total commercial real estate | Construction, land & land development
Loans
Loans	460,368		500,018
Organic Loans | Total commercial real estate | Other commercial real estate
Loans
Loans	915,727		754,790
Organic Loans | Residential real estate
Loans
Allowance for loan and lease losses	(1,976)	(1,841)	(1,786)	(1,893)	(1,890)	(2,053)
Organic Loans | Residential real estate | Real estate
Loans
Loans	175,258		144,295
Organic Loans | Owner-occupied real estate
Loans
Allowance for loan and lease losses	(2,410)	(2,036)	(2,239)	(2,038)	(1,982)	(1,920)
Organic Loans | Owner-occupied real estate | Real estate
Loans
Loans	261,784		256,317
Organic Loans | Commercial, financial & agricultural
Loans
Loans	363,551		327,381
Allowance for loan and lease losses	(3,682)	(3,663)	(4,093)	(4,396)	(3,834)	(2,509)
Organic Loans | Leases
Loans
Loans	66,765		71,724
Allowance for loan and lease losses	(696)	(825)	(655)	(716)	(881)	(865)
Organic Loans | Consumer
Loans
Loans	61,200		36,039
Allowance for loan and lease losses	$ (885)	$ (858)	$ (546)	$ (568)	$ (478)	$ (270)

Loans - Purchased Non-Credit I

Loans - Purchased Non-Credit Impaired (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Loans
Loans	$ 3,572,790		$ 2,814,572
Allowance for loan and lease losses	(26,842)	$ (27,988)	(26,598)	$ (27,177)	$ (27,599)	$ (29,075)
Loans, net	3,545,948		2,787,974
Net discounts	15,700		10,500
Purchased Non-Credit Impaired Loans
Loans
Loans	1,064,477		563,362
Allowance for loan and lease losses	(900)	(667)	(439)	(150)	(158)	(53)
Loans, net	1,063,577		562,923
Total commercial real estate
Loans
Loans	1,761,103		1,592,826
Total commercial real estate | Purchased Non-Credit Impaired Loans
Loans
Loans	265,156		260,739
Allowance for loan and lease losses	(189)	(145)	(88)	0	0	0
Residential real estate | Purchased Non-Credit Impaired Loans
Loans
Allowance for loan and lease losses	(460)	(342)	(72)	0	0	(53)
Owner-occupied real estate | Purchased Non-Credit Impaired Loans
Loans
Allowance for loan and lease losses	(220)	(152)	(44)	0	0	0
Commercial, financial & agricultural
Loans
Loans	937,682		368,120
Commercial, financial & agricultural | Purchased Non-Credit Impaired Loans
Loans
Loans	558,992		36,206
Allowance for loan and lease losses	(28)	(26)	(235)	(150)	(158)	0
Consumer
Loans
Loans	64,116		42,641
Consumer | Purchased Non-Credit Impaired Loans
Loans
Loans	2,647		6,255
Allowance for loan and lease losses	(3)	$ (2)	0	$ 0	$ 0	$ 0
Construction, land & land development | Total commercial real estate
Loans
Loans	507,956		567,763
Construction, land & land development | Total commercial real estate | Purchased Non-Credit Impaired Loans
Loans
Loans	30,670		51,208
Other commercial real estate | Total commercial real estate
Loans
Loans	1,253,147		1,025,063
Other commercial real estate | Total commercial real estate | Purchased Non-Credit Impaired Loans
Loans
Loans	234,486		209,531
Real estate | Residential real estate
Loans
Loans	329,692		343,398
Real estate | Residential real estate | Purchased Non-Credit Impaired Loans
Loans
Loans	112,244		144,596
Real estate | Owner-occupied real estate
Loans
Loans	413,432		395,863
Real estate | Owner-occupied real estate | Purchased Non-Credit Impaired Loans
Loans
Loans	$ 125,438		$ 115,566

Loans - Purchased Credit Impai

Loans - Purchased Credit Impaired (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Loans
Loans	$ 3,572,790		$ 2,814,572
Allowance for loan and lease losses	(26,842)	$ (27,988)	(26,598)	$ (27,177)	$ (27,599)	$ (29,075)
Loans, net	3,545,948		2,787,974
Purchased Credit Impaired Loans
Loans
Loans	203,660		160,646
Allowance for loan and lease losses	(3,233)	(4,761)	(5,073)	(5,291)	(5,433)	(7,798)
Loans, net	200,427		155,573
Total commercial real estate
Loans
Loans	1,761,103		1,592,826
Total commercial real estate | Purchased Credit Impaired Loans
Loans
Loans	119,852		77,279
Allowance for loan and lease losses	(1,457)	(2,131)	(2,183)	(2,362)	(2,834)	(3,388)
Residential real estate | Purchased Credit Impaired Loans
Loans
Allowance for loan and lease losses	(1,228)	(968)	(1,196)	(1,274)	(1,025)	(1,893)
Owner-occupied real estate | Purchased Credit Impaired Loans
Loans
Allowance for loan and lease losses	(498)	(1,611)	(1,655)	(1,588)	(1,502)	(2,449)
Commercial, financial & agricultural
Loans
Loans	937,682		368,120
Commercial, financial & agricultural | Purchased Credit Impaired Loans
Loans
Loans	15,139		4,533
Allowance for loan and lease losses	(36)	(37)	(38)	(65)	(69)	(60)
Consumer
Loans
Loans	64,116		42,641
Consumer | Purchased Credit Impaired Loans
Loans
Loans	269		347
Allowance for loan and lease losses	(14)	$ (14)	(1)	$ (2)	$ (3)	$ (8)
Construction, land & land development | Total commercial real estate
Loans
Loans	507,956		567,763
Construction, land & land development | Total commercial real estate | Purchased Credit Impaired Loans
Loans
Loans	16,918		16,537
Other commercial real estate | Total commercial real estate
Loans
Loans	1,253,147		1,025,063
Other commercial real estate | Total commercial real estate | Purchased Credit Impaired Loans
Loans
Loans	102,934		60,742
Real estate | Residential real estate
Loans
Loans	329,692		343,398
Real estate | Residential real estate | Purchased Credit Impaired Loans
Loans
Loans	42,190		54,507
Real estate | Owner-occupied real estate
Loans
Loans	413,432		395,863
Real estate | Owner-occupied real estate | Purchased Credit Impaired Loans
Loans
Loans	$ 26,210		$ 23,980

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Changes in Carrying Value of Purchased Credit Impaired Loans
Balance, beginning of period	$ 130,837	$ 129,100	$ 155,573	$ 137,777
Accretion of fair value discounts	6,520	9,335	23,425	33,039
Fair value of acquired loans	77,551	0	77,551	1,300
Reductions in principal balances resulting from repayments, write-offs and foreclosures	(16,009)	(17,032)	(57,962)	(53,078)
Change in the allowance for loan and lease losses on purchased credit impaired loans	1,528	142	1,840	2,507
Balance, end of period	$ 200,427	$ 121,545	$ 200,427	$ 121,545

Loans - Changes in Accretable

Loans - Changes in Accretable Discount (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Changes in Accretable Discount
Balance, beginning of period	$ 59,808	$ 75,390	$ 69,301	$ 86,100
Additions from acquisitions	11,664	0	11,664	1,648
Accretion	(6,520)	(9,335)	(23,425)	(33,039)
Transfers to accretable discounts and exit events, net	2,244	5,939	9,656	17,285
Balance, end of period	$ 67,196	$ 71,994	$ 67,196	$ 71,994

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Billions	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Loans pledged as collateral	$ 3.1	$ 2.5

Allowance for Loan and Lease 58

Allowance for Loan and Lease Losses (ALLL) - Allowance for Loan Losses Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 27,988	$ 27,599	$ 26,598	$ 29,075
Charge-offs	(1,707)	(550)	(3,356)	(5,283)
Recoveries	146	40	338	3,425
Net (charge-offs) recoveries	(1,561)	(510)	(3,018)	(1,858)
Provision for loan and lease losses	415	88	3,262	(40)
Balance, end of period	26,842	27,177	26,842	27,177
Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	22,560	22,008	21,086	21,224
Charge-offs	(912)	(311)	(1,988)	(2,858)
Recoveries	106	39	296	189
Net (charge-offs) recoveries	(806)	(272)	(1,692)	(2,669)
Provision for loan and lease losses	955	0	3,315	3,181
Balance, end of period	22,709	21,736	22,709	21,736
Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	667	158	439	53
Charge-offs	(152)	(16)	(397)	(80)
Recoveries	40	1	42	62
Net (charge-offs) recoveries	(112)	(15)	(355)	(18)
Provision for loan and lease losses	345	7	816	115
Balance, end of period	900	150	900	150
Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,761	5,433	5,073	7,798
Charge-offs	(643)	(223)	(971)	(2,345)
Recoveries	0	0	0	3,174
Net (charge-offs) recoveries	(643)	(223)	(971)	829
Provision for loan and lease losses	(885)	81	(869)	(3,336)
Balance, end of period	$ 3,233	$ 5,291	$ 3,233	$ 5,291

Allowance for Loan and Lease 59

Allowance for Loan and Lease Losses (ALLL) - Organic Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 27,988	$ 27,599	$ 26,598	$ 29,075
Charge-offs	(1,707)	(550)	(3,356)	(5,283)
Recoveries	146	40	338	3,425
Provision	415	88	3,262	(40)
Balance, end of period	26,842	27,177	26,842	27,177
Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	22,560	22,008	21,086	21,224
Charge-offs	(912)	(311)	(1,988)	(2,858)
Recoveries	106	39	296	189
Provision	955	0	3,315	3,181
Balance, end of period	22,709	21,736	22,709	21,736
Allowance attributable to loans, Individually evaluated for impairment	678		678		$ 787
Allowance attributable to loans, Collectively evaluated for impairment	22,031		22,031		20,299
Loans individually evaluated for impairment	5,482		5,482		6,234
Loans collectively evaluated for impairment	2,299,171		2,299,171		2,084,330
Total Loans	2,304,653		2,304,653		2,090,564
Total commercial real estate | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	13,337	12,943	11,767	13,607
Charge-offs	(746)	0	(933)	(2,125)
Recoveries	0	0	0	0
Provision	469	(818)	2,226	643
Balance, end of period	13,060	12,125	13,060	12,125
Allowance attributable to loans, Individually evaluated for impairment	69		69		201
Allowance attributable to loans, Collectively evaluated for impairment	12,991		12,991		11,566
Loans individually evaluated for impairment	3,417		3,417		5,057
Loans collectively evaluated for impairment	1,372,678		1,372,678		1,249,751
Total Loans	1,376,095		1,376,095		1,254,808
Residential real estate | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,841	1,890	1,786	2,053
Charge-offs	0	(1)	(48)	(29)
Recoveries	3	2	9	5
Provision	132	2	229	(136)
Balance, end of period	1,976	1,893	1,976	1,893
Allowance attributable to loans, Individually evaluated for impairment	360		360		413
Allowance attributable to loans, Collectively evaluated for impairment	1,616		1,616		1,373
Loans individually evaluated for impairment	720		720		825
Loans collectively evaluated for impairment	174,538		174,538		143,470
Total Loans	175,258		175,258		144,295
Owner-occupied real estate | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,036	1,982	2,239	1,920
Charge-offs	0	0	0	0
Recoveries	0	0	0	44
Provision	374	56	171	74
Balance, end of period	2,410	2,038	2,410	2,038
Allowance attributable to loans, Individually evaluated for impairment	83		83		0
Allowance attributable to loans, Collectively evaluated for impairment	2,327		2,327		2,239
Loans individually evaluated for impairment	759		759		0
Loans collectively evaluated for impairment	261,025		261,025		256,317
Total Loans	261,784		261,784		256,317
Commercial, financial & agricultural | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	3,663	3,834	4,093	2,509
Charge-offs	(98)	(172)	(240)	(336)
Recoveries	20	35	71	130
Provision	97	699	(242)	2,093
Balance, end of period	3,682	4,396	3,682	4,396
Allowance attributable to loans, Individually evaluated for impairment	129		129		146
Allowance attributable to loans, Collectively evaluated for impairment	3,553		3,553		3,947
Loans individually evaluated for impairment	511		511		298
Loans collectively evaluated for impairment	363,040		363,040		327,083
Total Loans	363,551		363,551		327,381
Leases | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	825	881	655	865
Charge-offs	(2)	(112)	(501)	(327)
Recoveries	67	2	176	9
Provision	(194)	(55)	366	169
Balance, end of period	696	716	696	716
Allowance attributable to loans, Individually evaluated for impairment	0		0		0
Allowance attributable to loans, Collectively evaluated for impairment	696		696		655
Loans individually evaluated for impairment	0		0		0
Loans collectively evaluated for impairment	66,765		66,765		71,724
Total Loans	66,765		66,765		71,724
Consumer | Organic Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	858	478	546	270
Charge-offs	(66)	(26)	(266)	(41)
Recoveries	16	0	40	1
Provision	77	116	565	338
Balance, end of period	885	$ 568	885	$ 568
Allowance attributable to loans, Individually evaluated for impairment	37		37		27
Allowance attributable to loans, Collectively evaluated for impairment	848		848		519
Loans individually evaluated for impairment	75		75		54
Loans collectively evaluated for impairment	61,125		61,125		35,985
Total Loans	$ 61,200		$ 61,200		$ 36,039

Allowance for Loan and Lease 60

Allowance for Loan and Lease Losses (ALLL) - Purchased Non-Credit Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 27,988	$ 27,599	$ 26,598	$ 29,075
Charge-offs	(1,707)	(550)	(3,356)	(5,283)
Recoveries	146	40	338	3,425
Provision	415	88	3,262	(40)
Balance, end of period	26,842	27,177	26,842	27,177
Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	667	158	439	53
Charge-offs	(152)	(16)	(397)	(80)
Recoveries	40	1	42	62
Provision	345	7	816	115
Balance, end of period	900	150	900	150
Allowance attributable to loans, Individually evaluated for impairment	28		28		$ 44
Allowance attributable to loans, Collectively evaluated for impairment	872		872		395
Loans individually evaluated for impairment	5,615		5,615		3,381
Loans collectively evaluated for impairment	1,058,862		1,058,862		559,981
Total Loans	1,064,477		1,064,477		563,362
Commercial real estate | Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	145	0	88	0
Charge-offs	(50)	0	(50)	0
Recoveries	1	0	1	0
Provision	93	0	150	0
Balance, end of period	189	0	189	0
Allowance attributable to loans, Individually evaluated for impairment	0		0		0
Allowance attributable to loans, Collectively evaluated for impairment	189		189		88
Loans individually evaluated for impairment	525		525		56
Loans collectively evaluated for impairment	264,631		264,631		260,683
Total Loans	265,156		265,156		260,739
Residential real estate | Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	342	0	72	53
Charge-offs	(7)	(14)	(7)	(76)
Recoveries	5	1	5	45
Provision	120	13	390	(22)
Balance, end of period	460	0	460	0
Allowance attributable to loans, Individually evaluated for impairment	0		0		0
Allowance attributable to loans, Collectively evaluated for impairment	460		460		72
Loans individually evaluated for impairment	387		387		320
Loans collectively evaluated for impairment	111,857		111,857		144,276
Total Loans	112,244		112,244		144,596
Owner-occupied real estate | Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	152	0	44	0
Charge-offs	0	0	(80)	0
Recoveries	0	0	0	0
Provision	68	0	256	0
Balance, end of period	220	0	220	0
Allowance attributable to loans, Individually evaluated for impairment	0		0		44
Allowance attributable to loans, Collectively evaluated for impairment	220		220		0
Loans individually evaluated for impairment	2,664		2,664		1,875
Loans collectively evaluated for impairment	122,774		122,774		113,691
Total Loans	125,438		125,438		115,566
Commercial, financial & agricultural | Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	26	158	235	0
Charge-offs	(91)	0	(251)	(1)
Recoveries	32	0	32	0
Provision	61	(8)	12	151
Balance, end of period	28	150	28	150
Allowance attributable to loans, Individually evaluated for impairment	28		28		0
Allowance attributable to loans, Collectively evaluated for impairment	0		0		235
Loans individually evaluated for impairment	2,031		2,031		1,128
Loans collectively evaluated for impairment	556,961		556,961		35,078
Total Loans	558,992		558,992		36,206
Consumer | Purchased Non-Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2	0	0	0
Charge-offs	(4)	(2)	(9)	(3)
Recoveries	2	0	4	17
Provision	3	2	8	(14)
Balance, end of period	3	$ 0	3	$ 0
Allowance attributable to loans, Individually evaluated for impairment	0		0		0
Allowance attributable to loans, Collectively evaluated for impairment	3		3		0
Loans individually evaluated for impairment	8		8		2
Loans collectively evaluated for impairment	2,639		2,639		6,253
Total Loans	$ 2,647		$ 2,647		$ 6,255

Allowance for Loan and Lease 61

Allowance for Loan and Lease Losses (ALLL) - Purchased Credit Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 27,988	$ 27,599	$ 26,598	$ 29,075
Charge-offs	(1,707)	(550)	(3,356)	(5,283)
Recoveries	146	40	338	3,425
Provision for loan and lease losses	415	88	3,262	(40)
Balance, end of period	26,842	27,177	26,842	27,177
Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	4,761	5,433	5,073	7,798
Charge-offs	(643)	(223)	(971)	(2,345)
Recoveries	0	0	0	3,174
Provision for loan and lease losses	(885)	81	(869)	(3,336)
Balance, end of period	3,233	5,291	3,233	5,291
Allowance attributable to loans, Individually evaluated for impairment	1,671		1,671		$ 2,389
Allowance attributable to loans, Collectively evaluated for impairment	1,562		1,562		2,684
Loans individually evaluated for impairment	110,081		110,081		39,754
Loans collectively evaluated for impairment	93,579		93,579		120,892
Total Loans	203,660		203,660		160,646
Total commercial real estate | Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,131	2,834	2,183	3,388
Charge-offs	(168)	(131)	(401)	(864)
Recoveries	0	0	0	2,281
Provision for loan and lease losses	(506)	(341)	(325)	(2,443)
Balance, end of period	1,457	2,362	1,457	2,362
Allowance attributable to loans, Individually evaluated for impairment	1,129		1,129		760
Allowance attributable to loans, Collectively evaluated for impairment	328		328		1,423
Loans individually evaluated for impairment	89,812		89,812		29,387
Loans collectively evaluated for impairment	30,040		30,040		47,892
Total Loans	119,852		119,852		77,279
Residential real estate | Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	968	1,025	1,196	1,893
Charge-offs	(50)	(5)	(92)	(899)
Recoveries	0	0	0	400
Provision for loan and lease losses	310	254	124	(120)
Balance, end of period	1,228	1,274	1,228	1,274
Allowance attributable to loans, Individually evaluated for impairment	153		153		156
Allowance attributable to loans, Collectively evaluated for impairment	1,075		1,075		1,040
Loans individually evaluated for impairment	3,058		3,058		1,897
Loans collectively evaluated for impairment	39,132		39,132		52,610
Total Loans	42,190		42,190		54,507
Owner-occupied real estate | Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,611	1,502	1,655	2,449
Charge-offs	(416)	(87)	(452)	(298)
Recoveries	0	0	0	207
Provision for loan and lease losses	(697)	173	(705)	(770)
Balance, end of period	498	1,588	498	1,588
Allowance attributable to loans, Individually evaluated for impairment	353		353		1,471
Allowance attributable to loans, Collectively evaluated for impairment	145		145		184
Loans individually evaluated for impairment	14,732		14,732		8,376
Loans collectively evaluated for impairment	11,478		11,478		15,604
Total Loans	26,210		26,210		23,980
Commercial, financial & agricultural | Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	37	69	38	60
Charge-offs	(6)	0	(22)	(228)
Recoveries	0	0	0	233
Provision for loan and lease losses	5	(4)	20	0
Balance, end of period	36	65	36	65
Allowance attributable to loans, Individually evaluated for impairment	22		22		2
Allowance attributable to loans, Collectively evaluated for impairment	14		14		36
Loans individually evaluated for impairment	2,345		2,345		86
Loans collectively evaluated for impairment	12,794		12,794		4,447
Total Loans	15,139		15,139		4,533
Consumer | Purchased Credit Impaired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	14	3	1	8
Charge-offs	(3)	0	(4)	(56)
Recoveries	0	0	0	53
Provision for loan and lease losses	3	(1)	17	(3)
Balance, end of period	14	$ 2	14	$ 2
Allowance attributable to loans, Individually evaluated for impairment	14		14		0
Allowance attributable to loans, Collectively evaluated for impairment	0		0		1
Loans individually evaluated for impairment	134		134		8
Loans collectively evaluated for impairment	135		135		339
Total Loans	$ 269		$ 269		$ 347

Allowance for Loan and Lease 62

Allowance for Loan and Lease Losses (ALLL) - Organic Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	$ 10,444		$ 10,444		$ 6,539
Recorded Investment with No Related Allowance	8,914		8,914		4,627
Unpaid Principal Balance with Related Allowance	2,299		2,299		7,237
Recorded Investment with Related Allowance	2,183		2,183		4,988
Impaired financing receivable, related allowance	706		706		831
Unpaid Principal Balance	12,743		12,743		13,776
Recorded Investment	11,097		11,097		9,615
Average Recorded Investment	11,799	$ 8,018	14,929	$ 9,973
Interest Income Recognized	0	0	1	27
Average recorded investment for TDRs	0	5,000	2,700	6,400
Interest income recognized on troubled debt restructurings	0	0	0	24
SBA Loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,700		4,700		3,000
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	4,611		4,611		4,621
Recorded Investment with No Related Allowance	3,805		3,805		2,989
Unpaid Principal Balance with Related Allowance	139		139		4,277
Recorded Investment with Related Allowance	137		137		2,124
Impaired financing receivable, related allowance	69		69		201
Average Recorded Investment	4,493	5,062	7,420	6,271
Interest Income Recognized	0	0	0	0
Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	413		413		388
Recorded Investment with No Related Allowance	387		387		320
Unpaid Principal Balance with Related Allowance	782		782		891
Recorded Investment with Related Allowance	720		720		825
Impaired financing receivable, related allowance	360		360		413
Average Recorded Investment	1,120	1,743	1,154	1,794
Interest Income Recognized	0	0	0	0
Owner-occupied real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	3,392		3,392		193
Recorded Investment with No Related Allowance	3,257		3,257		188
Unpaid Principal Balance with Related Allowance	166		166		1,706
Recorded Investment with Related Allowance	166		166		1,687
Impaired financing receivable, related allowance	83		83		44
Average Recorded Investment	3,446	0	3,500	148
Interest Income Recognized	0	0	0	3
Commercial, financial & agricultural
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	2,012		2,012		1,335
Recorded Investment with No Related Allowance	1,457		1,457		1,128
Unpaid Principal Balance with Related Allowance	1,127		1,127		308
Recorded Investment with Related Allowance	1,085		1,085		298
Impaired financing receivable, related allowance	157		157		146
Average Recorded Investment	2,653	1,163	2,761	1,722
Interest Income Recognized	0	0	1	24
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	16		16		2
Recorded Investment with No Related Allowance	8		8		2
Unpaid Principal Balance with Related Allowance	85		85		55
Recorded Investment with Related Allowance	75		75		54
Impaired financing receivable, related allowance	37		37		27
Average Recorded Investment	87	50	94	38
Interest Income Recognized	0	0	0	0
Construction, land & land development | Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance with No Related Allowance	5		5		4,565
Recorded Investment with No Related Allowance	5		5		2,933
Unpaid Principal Balance with Related Allowance	139		139		4,277
Recorded Investment with Related Allowance	137		137		2,124
Impaired financing receivable, related allowance	69		69		201
Average Recorded Investment	146	5,062	2,862	6,070
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	4,606		4,606		56
Recorded Investment with No Related Allowance	3,800		3,800		56
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	4,347	0	4,558	201
Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

Allowance for Loan and Lease 63

Allowance for Loan and Lease Losses (ALLL) - Organic Nonaccrual Loans (Details) - Organic and Purchased Non-Credit Impaired Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	$ 11,097	$ 9,615
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	3,942	5,113
Total commercial real estate | Construction, land & land development
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	142	5,057
Total commercial real estate | Other commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	3,800	56
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	1,107	1,146
Owner-occupied real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	3,423	1,874
Commercial, financial & agricultural
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	2,542	1,426
Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment, Nonaccrual Loans	$ 83	$ 56

Allowance for Loan and Lease 64

Allowance for Loan and Lease Losses (ALLL) - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 3,572,790	$ 2,814,572
Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,814	1,287
Current	2,301,839	2,089,277
Total Loans	2,304,653	2,090,564
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	307	61
Current	1,375,788	1,254,747
Total Loans	1,376,095	1,254,808
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	307	61
Current	460,061	499,957
Total Loans	460,368	500,018
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	0	0
Current	915,727	754,790
Total Loans	915,727	754,790
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	422	275
Current	174,836	144,020
Total Loans	175,258	144,295
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	1,017	40
Current	260,767	256,277
Total Loans	261,784	256,317
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	980	530
Current	362,571	326,851
Total Loans	363,551	327,381
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	66,765	71,724
Total Loans	66,765	71,724
Loans greater than 90 Days and Accruing	0	0
Organic Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	88	381
Current	61,112	35,658
Total Loans	61,200	36,039
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	5,107	3,817
Current	1,059,370	559,545
Total Loans	1,064,477	563,362
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	91	568
Current	265,065	260,171
Total Loans	265,156	260,739
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	44	495
Current	30,626	50,713
Total Loans	30,670	51,208
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	47	73
Current	234,439	209,458
Total Loans	234,486	209,531
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	313	439
Current	111,931	144,157
Total Loans	112,244	144,596
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	2,756	2,074
Current	122,682	113,492
Total Loans	125,438	115,566
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	1,933	696
Current	557,059	35,510
Total Loans	558,992	36,206
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	14	40
Current	2,633	6,215
Total Loans	2,647	6,255
Loans greater than 90 Days and Accruing	0	0
Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16,541	14,329
Current	187,119	146,317
Total Loans	203,660	160,646
Purchased Credit Impaired Loans | Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,752	6,069
Current	114,100	71,210
Total Loans	119,852	77,279
Purchased Credit Impaired Loans | Total commercial real estate | Construction, land & land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,882	2,575
Current	15,036	13,962
Total Loans	16,918	16,537
Purchased Credit Impaired Loans | Total commercial real estate | Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,870	3,494
Current	99,064	57,248
Total Loans	102,934	60,742
Purchased Credit Impaired Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,108	3,997
Current	38,082	50,510
Total Loans	42,190	54,507
Purchased Credit Impaired Loans | Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,162	4,168
Current	20,048	19,812
Total Loans	26,210	23,980
Purchased Credit Impaired Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	504	90
Current	14,635	4,443
Total Loans	15,139	4,533
Purchased Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15	5
Current	254	342
Total Loans	269	347
30 - 89 Days Past Due | Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,581	843
30 - 89 Days Past Due | Organic Loans | Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	262	49
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	262	49
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	0	0
30 - 89 Days Past Due | Organic Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	286	157
30 - 89 Days Past Due | Organic Loans | Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	424	40
30 - 89 Days Past Due | Organic Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	543	247
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	66	350
30 - 89 Days Past Due | Purchased Non-Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,154	1,355
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	86	512
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	39	495
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	47	17
30 - 89 Days Past Due | Purchased Non-Credit Impaired Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	257	274
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	256	387
30 - 89 Days Past Due | Purchased Non-Credit Impaired Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	547	144
30 - 89 Days Past Due | Purchased Non-Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8	38
30 - 89 Days Past Due | Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,480	2,968
30 - 89 Days Past Due | Purchased Credit Impaired Loans | Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	544	1,068
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	10	722
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	534	346
30 - 89 Days Past Due | Purchased Credit Impaired Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,678	1,210
30 - 89 Days Past Due | Purchased Credit Impaired Loans | Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	661
30 - 89 Days Past Due | Purchased Credit Impaired Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	243	29
30 - 89 Days Past Due | Purchased Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15	0
90 Days or Greater Past Due | Organic Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,233	444
90 Days or Greater Past Due | Organic Loans | Total commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	45	12
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	12
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	136	118
90 Days or Greater Past Due | Organic Loans | Owner-occupied real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	593	0
90 Days or Greater Past Due | Organic Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	437	283
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	22	31
90 Days or Greater Past Due | Purchased Non-Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,953	2,462
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	5	56
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	5	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	56
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	56	165
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	2,500	1,687
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	1,386	552
90 Days or Greater Past Due | Purchased Non-Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6	2
90 Days or Greater Past Due | Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	14,061	11,361
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	5,208	5,001
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	1,872	1,853
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	3,336	3,148
90 Days or Greater Past Due | Purchased Credit Impaired Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,430	2,787
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	6,162	3,507
90 Days or Greater Past Due | Purchased Credit Impaired Loans | Commercial, financial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	261	61
90 Days or Greater Past Due | Purchased Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 5

Allowance for Loan and Lease 65

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Organic Loans (Details) - Organic Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 2,304,653	$ 2,090,564
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,202,840	1,988,655
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	88,711	89,292
OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,577	4,760
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,525	7,856
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	1
Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,376,095	1,254,808
Total commercial real estate | Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	460,368	500,018
Total commercial real estate | Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	915,727	754,790
Total commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,319,165	1,189,655
Total commercial real estate | Pass | Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	433,737	470,686
Total commercial real estate | Pass | Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	885,428	718,969
Total commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	48,762	59,999
Total commercial real estate | Watch | Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	24,628	24,178
Total commercial real estate | Watch | Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	24,134	35,821
Total commercial real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,689	97
Total commercial real estate | OAEM | Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,866	97
Total commercial real estate | OAEM | Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,823	0
Total commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,479	5,057
Total commercial real estate | Substandard | Construction, land & land development
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	137	5,057
Total commercial real estate | Substandard | Other commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,342	0
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	175,258	144,295
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	169,972	139,393
Residential real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,348	2,484
Residential real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	615	460
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,323	1,958
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	261,784	256,317
Owner-occupied real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	237,134	237,753
Owner-occupied real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	22,637	14,967
Owner-occupied real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,083	3,577
Owner-occupied real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	930	20
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	363,551	327,381
Commercial, financial & agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	354,520	325,161
Commercial, financial & agricultural | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	8,193	920
Commercial, financial & agricultural | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	124	624
Commercial, financial & agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	714	676
Commercial, financial & agricultural | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	0	0
Leases
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	66,765	71,724
Leases | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	61,096	60,849
Leases | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	5,669	10,875
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	61,200	36,039
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	60,953	35,844
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	102	47
Consumer | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	66	2
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	79	145
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 0	$ 1

Allowance for Loan and Lease 66

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Purchased Non-Credit Impaired Loans (Details) - Purchased Non-Credit Impaired Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable [Line Items]
Loans Receivable	$ 1,064,477	$ 563,362
Pass
Financing Receivable [Line Items]
Loans Receivable	960,982	547,892
Watch
Financing Receivable [Line Items]
Loans Receivable	82,541	9,311
OAEM
Financing Receivable [Line Items]
Loans Receivable	10,343	2,492
Substandard
Financing Receivable [Line Items]
Loans Receivable	10,611	3,667
Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Total commercial real estate
Financing Receivable [Line Items]
Loans Receivable	265,156	260,739
Total commercial real estate | Pass
Financing Receivable [Line Items]
Loans Receivable	260,124	257,723
Total commercial real estate | Watch
Financing Receivable [Line Items]
Loans Receivable	2,618	803
Total commercial real estate | OAEM
Financing Receivable [Line Items]
Loans Receivable	1,849	2,157
Total commercial real estate | Substandard
Financing Receivable [Line Items]
Loans Receivable	565	56
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	30,670	51,208
Total commercial real estate | Construction, land & land development | Pass
Financing Receivable [Line Items]
Loans Receivable	30,205	51,208
Total commercial real estate | Construction, land & land development | Watch
Financing Receivable [Line Items]
Loans Receivable	419	0
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	46	0
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	234,486	209,531
Total commercial real estate | Other commercial real estate | Pass
Financing Receivable [Line Items]
Loans Receivable	229,919	206,515
Total commercial real estate | Other commercial real estate | Watch
Financing Receivable [Line Items]
Loans Receivable	2,199	803
Total commercial real estate | Other commercial real estate | OAEM
Financing Receivable [Line Items]
Loans Receivable	1,849	2,157
Total commercial real estate | Other commercial real estate | Substandard
Financing Receivable [Line Items]
Loans Receivable	519	56
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	112,244	144,596
Residential real estate | Pass
Financing Receivable [Line Items]
Loans Receivable	107,613	142,079
Residential real estate | Watch
Financing Receivable [Line Items]
Loans Receivable	2,446	1,883
Residential real estate | OAEM
Financing Receivable [Line Items]
Loans Receivable	569	314
Residential real estate | Substandard
Financing Receivable [Line Items]
Loans Receivable	1,616	320
Residential real estate | Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Owner-occupied real estate
Financing Receivable [Line Items]
Loans Receivable	125,438	115,566
Owner-occupied real estate | Pass
Financing Receivable [Line Items]
Loans Receivable	117,516	107,096
Owner-occupied real estate | Watch
Financing Receivable [Line Items]
Loans Receivable	3,443	6,310
Owner-occupied real estate | OAEM
Financing Receivable [Line Items]
Loans Receivable	1,285	0
Owner-occupied real estate | Substandard
Financing Receivable [Line Items]
Loans Receivable	3,194	2,160
Owner-occupied real estate | Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Commercial, financial & agricultural
Financing Receivable [Line Items]
Loans Receivable	558,992	36,206
Commercial, financial & agricultural | Pass
Financing Receivable [Line Items]
Loans Receivable	473,093	34,747
Commercial, financial & agricultural | Watch
Financing Receivable [Line Items]
Loans Receivable	74,032	310
Commercial, financial & agricultural | OAEM
Financing Receivable [Line Items]
Loans Receivable	6,640	21
Commercial, financial & agricultural | Substandard
Financing Receivable [Line Items]
Loans Receivable	5,227	1,128
Commercial, financial & agricultural | Doubtful
Financing Receivable [Line Items]
Loans Receivable	0	0
Consumer
Financing Receivable [Line Items]
Loans Receivable	2,647	6,255
Consumer | Pass
Financing Receivable [Line Items]
Loans Receivable	2,636	6,247
Consumer | Watch
Financing Receivable [Line Items]
Loans Receivable	2	5
Consumer | OAEM
Financing Receivable [Line Items]
Loans Receivable	0	0
Consumer | Substandard
Financing Receivable [Line Items]
Loans Receivable	9	3
Consumer | Doubtful
Financing Receivable [Line Items]
Loans Receivable	$ 0	$ 0

Allowance for Loan and Lease 67

Allowance for Loan and Lease Losses (ALLL) - Credit Quality of Purchased Credit Impaired Loans (Details) - Purchased Credit Impaired Loans - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 203,660	$ 160,646
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	120,750	81,019
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	25,044	29,918
OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15,432	8,266
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	42,280	41,171
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	154	272
Total commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	119,852	77,279
Total commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	88,424	41,221
Total commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	13,298	14,253
Total commercial real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,406	4,186
Total commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	14,724	17,619
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	16,918	16,537
Total commercial real estate | Construction, land & land development | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	10,114	7,798
Total commercial real estate | Construction, land & land development | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	863	1,150
Total commercial real estate | Construction, land & land development | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	941	1,416
Total commercial real estate | Construction, land & land development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	5,000	6,173
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	102,934	60,742
Total commercial real estate | Other commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	78,310	33,423
Total commercial real estate | Other commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	12,435	13,103
Total commercial real estate | Other commercial real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,465	2,770
Total commercial real estate | Other commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	9,724	11,446
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	42,190	54,507
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	22,728	28,628
Residential real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	6,523	10,371
Residential real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	1,624	2,840
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	11,182	12,396
Residential real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	133	272
Owner-occupied real estate
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	26,210	23,980
Owner-occupied real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	7,347	7,736
Owner-occupied real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	4,940	4,884
Owner-occupied real estate | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	816	794
Owner-occupied real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	13,104	10,566
Owner-occupied real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3	0
Commercial, financial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	15,139	4,533
Commercial, financial & agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	2,194	3,381
Commercial, financial & agricultural | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	253	310
Commercial, financial & agricultural | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	9,432	273
Commercial, financial & agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	3,242	569
Commercial, financial & agricultural | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	18	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	269	347
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	57	53
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	30	100
Consumer | OAEM
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	154	173
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	28	21
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable	$ 0	$ 0

Allowance for Loan and Lease 68

Allowance for Loan and Lease Losses (ALLL) - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)commitment	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)contractcommitment	Sep. 30, 2016USD ($)contract	Dec. 31, 2016USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment	$ 11,097,000		$ 11,097,000		$ 9,615,000
Troubled debt restructuring	$ 0		$ 0		5,000,000
Allowance for loan losses on troubled debt restructuring					148,000
Number of commitments to extend credit to borrowers with TDR | commitment	0		0
Number of TDR's that subsequently defaulted within 12 months | contract			0	0
Interest income recognized on troubled debt restructurings	$ 0	$ 0	$ 0	$ 24,000
SBA Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment	$ 4,700,000		$ 4,700,000		$ 3,000,000

Allowance for Loan and Lease 69

Allowance for Loan and Lease Losses (ALLL) - Troubled Debt Restructuring (Details) - Organic Loans $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 4,168
Post-Modification Outstanding Recorded Investment	$ 0	$ 4,168
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
Total commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 4,168
Post-Modification Outstanding Recorded Investment	$ 0	$ 4,168
Total commercial real estate | Construction, land & land development
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 4,168
Post-Modification Outstanding Recorded Investment	$ 0	$ 4,168
Total commercial real estate | Other commercial 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
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	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0

Other Real Estate Owned (OREO70

Other Real Estate Owned (OREO) - Narrative (Details) $ in Thousands	Sep. 30, 2017USD ($)
Banking and Thrift [Abstract]
Consumer mortgage loans secured by residential real estate in process of foreclosure	$ 84

Other Real Estate Owned (OREO71

Other Real Estate Owned (OREO) - Types of OREO (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Other real estate owned	$ 1,271	$ 10,897
Construction, land development, and other land
Financing Receivable, Impaired [Line Items]
Other real estate owned	756	2,393
Commercial and farmland real estate
Financing Receivable, Impaired [Line Items]
Other real estate owned	255	6,960
Residential real estate
Financing Receivable, Impaired [Line Items]
Other real estate owned	$ 260	$ 1,544

Other Real Estate Owned (OREO72

Other Real Estate Owned (OREO) - By Type of Loan Foreclosure (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Other real estate owned	$ 1,271	$ 10,897
Organic OREO
Financing Receivable, Impaired [Line Items]
Other real estate owned	0	282
Purchased Credit Impaired OREO
Financing Receivable, Impaired [Line Items]
Other real estate owned	$ 1,271	$ 10,615

SBA Servicing Rights - Narrati

SBA Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Transfers and Servicing [Abstract]
SBA loans sold, unpaid principal balance	$ 10,100	$ 13,700	$ 35,100	$ 38,600
SBA loans sold, gains on sales	1,200	1,300	3,600	3,900
SBA servicing fee income	389	$ 383	1,200	$ 974
SBA loans serviced	$ 178,200		$ 178,200		$ 142,100

SBA Servicing Rights - Rollfor

SBA Servicing Rights - Rollforward (Details) - SBA Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 3,828	$ 3,165	$ 3,477	$ 2,626
Additions	253	339	850	963
Fair value adjustments	(131)	(229)	(377)	(314)
Balance, end of period	$ 3,950	$ 3,275	$ 3,950	$ 3,275

SBA Servicing Rights - Fair Va

SBA Servicing Rights - Fair Value Assumptions & Sensitivity Analysis (Details) - SBA Loans - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Servicing Assets at Fair Value [Line Items]
Fair value	$ 3,950	$ 3,477	$ 3,828	$ 3,275	$ 3,165	$ 2,626
Weighted average discount rate	12.60%	12.80%
Decline in fair value due to a 100 basis point adverse change	$ (141)	$ (122)
Decline in fair value due to a 200 basis point adverse change	$ (273)	$ (236)
Prepayment speed	8.40%	8.00%
Decline in fair value due to a 10% adverse change	$ (130)	$ (108)
Decline in fair value due to a 20% adverse change	$ (254)	$ (210)
Weighted average remaining life	7 years 11 days	7 years 1 month 4 days

SBA Servicing Rights - Past Du

SBA Servicing Rights - Past Due (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	$ 344,133		$ 302,776
Net Charge-offs for the Nine Months Ended September 30, 2017	454	$ 2,120
Serviced for others
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	178,177		142,069
Net Charge-offs for the Nine Months Ended September 30, 2017	0	0
Held-for-sale
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	13,956		16,356
Net Charge-offs for the Nine Months Ended September 30, 2017	0	0
Held-for-investment
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	152,000		144,351
Net Charge-offs for the Nine Months Ended September 30, 2017	454	$ 2,120
30 - 89 Days Past Due
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	1,398		742
30 - 89 Days Past Due | Serviced for others
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	76		522
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	1,322		220
90 Days or Greater Past Due
Servicing Assets at Fair Value [Line Items]
Total SBA loans serviced	8,154		5,580
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	$ 8,154		$ 5,580

Derivative Instruments and He77

Derivative Instruments and Hedging Activities - Balance Sheet Disclosures (Details) - Interest rate swaps and caps - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 1,538	$ 1,793
Liability Derivatives	387	726
Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	1,538	1,774
Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	387	641
Not Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	19
Not Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ 85

Derivative Instruments and He78

Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017USD ($)derivative	Sep. 30, 2016USD ($)	Mar. 31, 2013USD ($)	Sep. 30, 2017USD ($)derivative	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (213)	$ 42		$ (622)	$ (285)
Credit Risk Contract
Derivative [Line Items]
Fair value of derivatives in net liability position	11			11
Additional collateral required, maximum	11			11
Interest rate swaps and caps
Derivative [Line Items]
Notional amount	51,200			51,200		$ 49,900
Derivative financial instruments, assets	1,538			1,538		1,793
Derivative financial instruments, liabilities	387			387		726
Forward Commitments
Derivative [Line Items]
Notional amount	$ 75,800			$ 75,800		76,700
Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivatives held | derivative	91			91
Notional amount	$ 157,800			$ 157,800
Designated as Hedging Instrument | Interest Rate Caps
Derivative [Line Items]
Notional amount			$ 200,000
Term of contract			5 years
Estimated decrease to be reclassified from accumulated other comprehensive income in next twelve months				$ 502
Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivatives held | derivative	0			0
Interest Income | Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Amount of (loss) gain recognized in income on derivatives	$ (176)	(460)		$ (761)	(1,400)
Noninterest Income | Interest Rate Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in income	(68)	21		(124)	(199)
Noninterest Income | Interest rate swaps and caps
Derivative [Line Items]
Amount of gain (loss) recognized in income	(79)	(430)		250	313
Noninterest Income | Forward Commitments
Derivative [Line Items]
Amount of gain (loss) recognized in income	(66)	451		(748)	(399)
Fair Value Hedging | Noninterest Income | Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) on fair value hedge ineffectiveness	(52)	21		(103)	(290)
Net gain (loss) recognized on terminations	(152)	(61)		(153)	(108)
Fair Value Hedging | Noninterest Income | Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Gain (loss) on fair value hedge ineffectiveness	(52)	21		(103)	(290)
Amount of (loss) gain recognized in income on derivatives	3	$ 977		35	$ (3,396)
Other Assets | Designated as Hedging Instrument | Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, assets	1,538			1,538		1,774
Other Assets | Not Designated as Hedging Instrument | Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, assets	0			0		19
Other Assets | Not Designated as Hedging Instrument | Mortgage Derivatives
Derivative [Line Items]
Derivative financial instruments, assets	872			872		1,362
Other Liabilities | Designated as Hedging Instrument | Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, liabilities	387			387		641
Other Liabilities | Not Designated as Hedging Instrument | Interest rate swaps and caps
Derivative [Line Items]
Derivative financial instruments, liabilities	0			0		85
Other Liabilities | Not Designated as Hedging Instrument | Mortgage Derivatives
Derivative [Line Items]
Derivative financial instruments, liabilities	$ 467			$ 467		$ 459

Derivative Instruments and He79

Derivative Instruments and Hedging Activities - Fair Value Hedges (Details) - Designated as Hedging Instrument - Noninterest Income - Fair Value Hedging - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Total net (loss) gain recognized in income on fair value hedge ineffectiveness	$ (52)	$ 21	$ (103)	$ (290)
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	3	977	35	(3,396)
Amount of loss recognized in income on hedged items	(55)	(956)	(138)	3,106
Total net (loss) gain recognized in income on fair value hedge ineffectiveness	$ (52)	$ 21	$ (103)	$ (290)

Derivative Instruments and He80

Derivative Instruments and Hedging Activities - Cash Flow Hedges (Details) - Interest Rate Caps - Designated as Hedging Instrument - Cash Flow Hedging - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in AOCI on derivatives (effective portion)	$ (409)	$ (247)	$ (1,163)	$ (1,651)
Other Comprehensive Income (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in AOCI on derivatives (effective portion)	(30)	73	50	(847)
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss reclassified from AOCI into income (effective portion)	$ 379	$ 320	$ 1,213	$ 804

Derivative Instruments and He81

Derivative Instruments and Hedging Activities - Interest Rate Products Not Designated as Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (213)	$ 42	$ (622)	$ (285)
Noninterest Income | Interest Rate Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in income	(68)	21	(124)	(199)
Noninterest Income | Interest Rate Products
Derivative [Line Items]
Amount of gain (loss) recognized in income	(79)	(430)	250	313
Noninterest Income | Forward Commitments
Derivative [Line Items]
Amount of gain (loss) recognized in income	$ (66)	$ 451	$ (748)	$ (399)

Balance Sheet Offsetting and 82

Balance Sheet Offsetting and Repurchase Agreements - Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Repurchase agreements
Gross Amounts Recognized	$ 25,499	$ 25,722
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	25,499	25,722
Gross Amounts Not Offset on the Statement of Financial Condition	0	0
Collateral Received/Posted	(25,499)	(25,722)
Net Amount	0	0
Total Offsetting Liabilities
Gross Amounts Recognized	25,886	26,448
Gross Amounts Offset on the Statement of Financial Condition	0	0
Net Amounts Presented on the Statement of Financial Condition	25,886	26,448
Gross Amounts Not Offset on the Statement of Financial Condition	(377)	(718)
Collateral Received/Posted	(25,499)	(25,722)
Net Amount	10	8
Interest rate swaps and caps
Offsetting Derivative Assets [Abstract]
Gross Amounts Recognized	1,538	1,793
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts presented in the Statement of Financial Condition	1,538	1,793
Financial Instruments	(377)	(718)
Collateral Received/Posted	(590)	(1,075)
Net Amount	571	0
Offsetting Derivative Liabilities [Abstract]
Gross Amounts Recognized	387	726
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts presented in the Statement of Financial Condition	387	726
Financial Instruments	(377)	(718)
Collateral Received/Posted	0	0
Net Amount	$ 10	$ 8

Balance Sheet Offsetting and 83

Balance Sheet Offsetting and Repurchase Agreements - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Offsetting [Abstract]
Securities sold under repurchase agreements	$ 25,499	$ 25,722

Regulatory Matters - Minimum R

Regulatory Matters - Minimum Required Regulatory Ratios (Details)	Sep. 30, 2017
Common Equity Tier 1 Capital
Common Equity Tier 1 Capital (CET1) capital ratio, Minimum Requirement	4.50%
Common Equity Tier 1 Capital (CET1) capital ratio, Well-capitalized	6.50%
Tier I Capital
Tier 1 risk-based capital ratio, Minimum Requirement	6.00%
Tier 1 risk-based capital ratio, Well-capitalized	8.00%
Total Capital
Total risk-based capital ratio, Minimum Requirement	8.00%
Total risk-based capital ratio, Well-capitalized	10.00%
Tier I Leverage
Tier 1 leverage ratio, Minimum Requirement	4.00%
Tier 1 leverage ratio, Well-capitalized	5.00%

Regulatory Matters - Regulator

Regulatory Matters - Regulatory Ratios Consolidated (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CET1 Capital
Common Equity Tier 1 (CET1) capital ratio, Amount	$ 543,807	$ 526,282
Common Equity Tier 1 (CET1) capital ratio, Ratio (percent)	12.21%	14.78%
Common Equity Tier 1 (CET1) capital ratio, Required Minimum Amount	$ 200,405	$ 160,258
Tier I Capital
Tier 1 risk-based capital ratio, Amount	$ 543,807	$ 526,282
Tier 1 risk-based capital ratio, Ratio (percent)	12.21%	14.78%
Tier 1 risk-based capital ratio, Required Minimum Amount	$ 267,207	$ 213,678
Total Capital
Total risk-based capital ratio, Amount	$ 570,649	$ 552,880
Total risk-based capital ratio, Ratio (percent)	12.81%	15.52%
Total risk-based capital ratio, Required Minimum Amount	$ 356,276	$ 284,904
Tier I Leverage
Tier 1 leverage ratio, Amount	$ 543,807	$ 526,282
Tier 1 leverage ratio, Ratio (percent)	13.37%	14.90%
Tier 1 leverage ratio, Required Minimum Amount	$ 162,706	$ 141,273

Regulatory Matters - Regulat86

Regulatory Matters - Regulatory Ratios Subsidiaries (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CET1 Capital
CET1 Capital, Amount	$ 543,807	$ 526,282
CET1, Ratio (percent)	12.21%	14.78%
CET1 Capital, Required Minimum Amount	$ 200,405	$ 160,258
Tier I Capital
Tier 1 Capital, Amount	$ 543,807	$ 526,282
Tier 1 Capital, Ratio (percent)	12.21%	14.78%
Tier 1 Capital, Required Minimum Amount	$ 267,207	$ 213,678
Total Capital
Total Capital, Amount	$ 570,649	$ 552,880
Total Capital, Ratio (percent)	12.81%	15.52%
Total Capital, Required Minimum Amount	$ 356,276	$ 284,904
Tier I Leverage
Tier 1 Leverage, Amount	$ 543,807	$ 526,282
Tier 1 Leverage, Ratio (percent)	13.37%	14.90%
Tier 1 Leverage, Required Minimum Amount	$ 162,706	$ 141,273
State Bank
CET1 Capital
CET1 Capital, Amount	$ 471,829	$ 463,164
CET1, Ratio (percent)	10.62%	13.06%
CET1 Capital, Required Minimum Amount	$ 199,899	$ 159,535
CET1 Capital, Well Capitalized Amount	288,743	230,440
Tier I Capital
Tier 1 Capital, Amount	$ 471,829	$ 463,164
Tier 1 Capital, Ratio (percent)	10.62%	13.06%
Tier 1 Capital, Required Minimum Amount	$ 266,532	$ 212,714
Tier 1 Capital, Well Capitalized Amount	355,376	283,618
Total Capital
Total Capital, Amount	$ 498,671	$ 489,762
Total Capital, Ratio (percent)	11.23%	13.81%
Total Capital, Required Minimum Amount	$ 355,376	$ 283,618
Total Capital, Well Capitalized Amount	444,221	354,523
Tier I Leverage
Tier 1 Leverage, Amount	$ 471,829	$ 463,164
Tier 1 Leverage, Ratio (percent)	11.60%	13.18%
Tier 1 Leverage, Required Minimum Amount	$ 162,691	$ 140,572
Tier 1 Leverage, Well Capitalized Amount	$ 203,364	$ 175,715

Regulatory Matters - Narrative

Regulatory Matters - Narrative (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash and amounts due from depository institutions	$ 14,235,000	$ 13,219,000
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	$ 60,700,000

Commitments and Contingent Li88

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Commitments [Line Items]
Commitments	$ 970,481	$ 681,566
Minimum
Commitments [Line Items]
Fixed rate loan commitments maturity	1 month
Maximum
Commitments [Line Items]
Fixed rate loan commitments maturity	13 years
Fixed | Commitments to extend credit
Commitments [Line Items]
Commitments	$ 56,342	63,166
Fixed | Financial standby letters of credit:
Commitments [Line Items]
Commitments	5,525	6,985
Variable | Commitments to extend credit
Commitments [Line Items]
Commitments	897,223	608,176
Variable | Financial standby letters of credit:
Commitments [Line Items]
Commitments	11,391	$ 3,239
Obligation to repurchase or indemnify loans sold
Commitments [Line Items]
Recourse liability	$ 297

Fair Value - Narrative (Detail

Fair Value - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of mortgages held-for-sale	$ 33,800		$ 33,800
Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contractual balance including accrued interest	33,000		33,000
Gain (loss) on change in fair value			754
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	63	$ (749)	545	$ 324
Mortgage Banking Income | Mortgage Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on change in fair value	$ (107)	$ (294)	$ 144	$ 194

Fair Value - Assets and Liabil

Fair Value - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets:
Investment securities available-for-sale	$ 920,763	$ 847,178
Measured on recurring basis
Assets:
SBA servicing rights	3,950	3,477
Total recurring assets at fair value	1,115,356	1,056,788
Liabilities:
Total recurring liabilities at fair value	854	1,185
Measured on recurring basis | U.S. Government securities
Assets:
Investment securities available-for-sale	77,375	88,649
Measured on recurring basis | States and political subdivisions
Assets:
Investment securities available-for-sale	2,859	301
Measured on recurring basis | Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	127,052	154,009
Measured on recurring basis | Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	602,926	529,302
Measured on recurring basis | Corporate securities
Assets:
Investment securities available-for-sale	110,551	74,917
Measured on recurring basis | Mortgage loans held for sale
Assets:
Investment securities available-for-sale	33,787	35,813
Measured on recurring basis | Quoted Market Prices in Active Markets (Level 1)
Assets:
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) | U.S. Government securities
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis | Quoted Market Prices in Active Markets (Level 1) | States and political subdivisions
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 | Quoted Market Prices in Active Markets (Level 1) | Mortgage loans held for sale
Assets:
Investment securities available-for-sale	0	0
Measured on recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
SBA servicing rights	0	0
Total recurring assets at fair value	1,110,669	1,052,612
Liabilities:
Total recurring liabilities at fair value	515	740
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government securities
Assets:
Investment securities available-for-sale	77,375	88,649
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | States and political subdivisions
Assets:
Investment securities available-for-sale	2,859	301
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities — nonagency
Assets:
Investment securities available-for-sale	127,052	154,009
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities — agency
Assets:
Investment securities available-for-sale	602,926	529,302
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities
Assets:
Investment securities available-for-sale	110,551	74,917
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage loans held for sale
Assets:
Investment securities available-for-sale	33,787	35,813
Measured on recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
SBA servicing rights	3,950	3,477
Total recurring assets at fair value	4,687	4,176
Liabilities:
Total recurring liabilities at fair value	339	445
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) | States and political subdivisions
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
Measured on recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage loans held for sale
Assets:
Investment securities available-for-sale	0	0
Hedged Loans | Measured on recurring basis
Assets:
Derivative financial instruments, assets	154,446	167,165
Hedged Loans | Measured on recurring basis | Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative financial instruments, assets	0	0
Hedged Loans | Measured on recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Derivative financial instruments, assets	154,446	167,165
Hedged Loans | Measured on recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Derivative financial instruments, assets	0	0
Mortgage Derivatives | Measured on recurring basis
Assets:
Derivative financial instruments, assets	872	1,362
Liabilities:
Derivative financial instruments, liabilities	467	459
Mortgage Derivatives | Measured on recurring basis | Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative financial instruments, assets	0	0
Liabilities:
Derivative financial instruments, liabilities	0	0
Mortgage Derivatives | Measured on recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Derivative financial instruments, assets	135	663
Liabilities:
Derivative financial instruments, liabilities	128	14
Mortgage Derivatives | Measured on recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Derivative financial instruments, assets	737	699
Liabilities:
Derivative financial instruments, liabilities	339	445
Interest Rate Swaps and Caps | Measured on recurring basis
Assets:
Derivative financial instruments, assets	1,538	1,793
Liabilities:
Derivative financial instruments, liabilities	387	726
Interest Rate Swaps and Caps | Measured on recurring basis | Quoted Market Prices in Active Markets (Level 1)
Assets:
Derivative financial instruments, assets	0	0
Liabilities:
Derivative financial instruments, liabilities	0	0
Interest Rate Swaps and Caps | Measured on recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Derivative financial instruments, assets	1,538	1,793
Liabilities:
Derivative financial instruments, liabilities	387	726
Interest Rate Swaps and Caps | Measured on recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Derivative financial instruments, assets	0	0
Liabilities:
Derivative financial instruments, liabilities	$ 0	$ 0

Fair Value - Mortgage Derivati

Fair Value - Mortgage Derivatives Reconciliation (Details) - Mortgage Derivatives - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Assets
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	$ 890	$ 1,338	$ 699	$ 651
Issuances	339	427	1,543	2,084
Settlements and closed loans	(492)	(854)	(1,505)	(1,824)
Balance, end of period	737	911	737	911
Other Liabilities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	385	560	445	361
Issuances	339	427	1,167	1,596
Settlements and closed loans	(385)	(560)	(1,273)	(1,530)
Balance, end of period	$ 339	$ 427	$ 339	$ 427

Fair Value - Financial Assets

Fair Value - Financial Assets Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance	$ 12,743	$ 13,776
Impaired financing receivable, related allowance	706	831
Organic and Purchased Non-Credit Impaired Loans | Financial assets measured on a Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	10,391	8,784
Total nonrecurring assets at fair value	10,391	8,784
Organic and Purchased Non-Credit Impaired Loans | Financial assets measured on a Nonrecurring basis | Collateral Dependent
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance	11,100	9,600
Impaired financing receivable, related allowance	706	831
Organic and Purchased Non-Credit Impaired Loans | Financial assets measured on a Nonrecurring basis | 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
Organic and Purchased Non-Credit Impaired Loans | Financial assets measured on a Nonrecurring basis | 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
Organic and Purchased Non-Credit Impaired Loans | Financial assets measured on a Nonrecurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	10,391	8,784
Total nonrecurring assets at fair value	$ 10,391	$ 8,784

Fair Value - Nonfinancial Asse

Fair Value - Nonfinancial Assets Measured on a Nonrecurring Basis (Details) - Financial assets measured on a Nonrecurring basis - Other Real Estate Owned - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 1,647	$ 13,292
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	$ 1,647	$ 13,292

Fair Value - Reconciliation of

Fair Value - Reconciliation of Other Real Estate Owned (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 1,271	$ 10,897
Other Real Estate Owned | Assets measured on a nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned at fair value	1,647	13,292
Estimated selling costs and other adjustments	(376)	(2,395)
Other real estate owned	$ 1,271	$ 10,897

Fair Value - Unobservable Inpu

Fair Value - Unobservable Inputs (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
SBA Servicing Asset | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	9.00%	9.00%
Prepayment speed	4.00%	3.00%
SBA Servicing Asset | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	20.00%	18.00%
Prepayment speed	12.00%	11.00%
SBA Servicing Asset | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	13.00%	13.00%
Prepayment speed	8.00%	8.00%
Mortgage Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pull-through rate	83.00%	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	33.00%	68.00%
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	14.00%	16.00%
Measured on recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
SBA servicing rights	$ 3,950	$ 3,477
Mortgage derivatives - asset	1,115,356	1,056,788
Measured on recurring basis | SBA Servicing Asset | Discounted cash flows
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
SBA servicing rights	3,950	3,477
Measured on recurring basis | Mortgage Derivatives | Pricing model
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage derivatives - asset	737	699
Assets 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	$ 1,647	$ 13,292
Organic Loans | 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%
Organic Loans | 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	50.00%	50.00%
Organic Loans | 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	6.00%	9.00%
Organic Loans | Assets 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	$ 10,391	$ 8,784
Mortgage Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pull-through rate	83.00%	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	$ 339	$ 445

Fair Value - Estimated Fair Va

Fair Value - Estimated Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets:
Investment securities available-for-sale	$ 920,763	$ 847,178
Investment securities held-to-maturity	58,605	67,435
Loans held-for-sale	33,800
Other real estate owned	1,271	10,897
Carrying Amount | Level 1
Assets:
Cash and cash equivalents	282,239	149,593
Carrying Amount | Level 2
Assets:
Investment securities available-for-sale	920,763	847,178
Loans held-for-sale	47,743	52,169
Derivative financial instruments	1,538	1,793
Accrued interest receivable	14,015	10,210
Liabilities:
Deposits	4,241,085	3,431,165
Federal funds purchased and securities sold under agreements to repurchase	25,499	27,673
FHLB borrowings	0	47,014
Notes payable	398	398
Interest rate swaps and caps	387	726
Accrued interest payable	3,023	2,312
Carrying Amount | Level 2 & 3
Assets:
Investment securities held-to-maturity	57,867	67,063
Loans, net	3,545,948	2,787,974
Derivative financial instruments	872	1,362
Liabilities:
Interest rate swaps and caps	467	459
Carrying Amount | Level 3
Assets:
Other real estate owned	1,271	10,897
SBA servicing rights	3,950	3,477
Federal Home Loan Bank stock	4,651	5,680
Estimate of Fair Value | Level 1
Assets:
Cash and cash equivalents	282,239	149,593
Estimate of Fair Value | Level 2
Assets:
Investment securities available-for-sale	920,763	847,178
Loans held-for-sale	49,481	53,770
Derivative financial instruments	1,538	1,793
Accrued interest receivable	14,015	10,210
Liabilities:
Deposits	4,240,594	3,430,405
Federal funds purchased and securities sold under agreements to repurchase	25,499	27,673
FHLB borrowings	0	47,014
Notes payable	398	398
Interest rate swaps and caps	387	726
Accrued interest payable	3,023	2,312
Estimate of Fair Value | Level 2 & 3
Assets:
Investment securities held-to-maturity	58,605	67,435
Loans, net	3,572,224	2,820,484
Derivative financial instruments	872	1,362
Liabilities:
Interest rate swaps and caps	467	459
Estimate of Fair Value | Level 3
Assets:
Other real estate owned	1,647	13,292
SBA servicing rights	3,950	3,477
Federal Home Loan Bank stock	$ 4,651	$ 5,680

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0	0	0	0
Numerator:
Net income	$ 14,436	$ 12,441	$ 41,197	$ 37,264
Net income allocated to participating securities	(389)	(348)	(1,095)	(1,021)
Net income allocated to common stock	14,047	12,093	40,102	36,243
Basic earnings per share computation:
Net income allocated to common stock	$ 14,047	$ 12,093	$ 40,102	$ 36,243
Weighted average common shares outstanding, including shares considered participating securities (in shares)	38,969,619	36,895,121	38,928,833	36,953,036
Less: Average participating securities (in shares)	(1,050,866)	(1,031,938)	(1,034,448)	(1,012,634)
Weighted average shares (in shares)	37,918,753	35,863,183	37,894,385	35,940,402
Basic earnings per share (usd per share)	$ 0.37	$ 0.34	$ 1.06	$ 1.01
Diluted earnings per share computation:
Net income allocated to common stock	$ 14,047	$ 12,093	$ 40,102	$ 36,243
Weighted average shares (in shares)	37,918,753	35,863,183	37,894,385	35,940,402
Weighted average dilutive grants (in shares)	44,388	102,765	49,586	100,253
Weighted average shares and dilutive potential common shares (in shares)	37,963,141	35,965,948	37,943,971	36,040,655
Diluted earnings per share (usd per share)	$ 0.37	$ 0.34	$ 1.06	$ 1.01

Accumulated Other Comprehensi98

Accumulated Other Comprehensive Income - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	$ (1,559)	$ 3,554	$ (2,457)	$ (1,634)
Other comprehensive income (loss) before income taxes:
Net change in unrealized gains (losses)	1,604	(758)	2,198	7,737
Amounts reclassified for net (gains) losses realized and included in earnings	376	282	1,185	357
Transfer of net unrealized Check Yourself Before You Wreck Yourself! from available-for-sale to held-to-maturity				0
Amortization of net unrealized losses on securities transferred to held-to-maturity	(4)	(2)	(40)	(3)
Income tax expense (benefit)	760	(184)	1,309	3,197
Balance, end of period	(343)	3,260	(343)	3,260
Investment Securities Available-for-Sale
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	(905)	5,356	(1,200)	(272)
Other comprehensive income (loss) before income taxes:
Net change in unrealized gains (losses)	1,634	(831)	2,148	8,584
Amounts reclassified for net (gains) losses realized and included in earnings	(3)	(38)	(28)	(447)
Transfer of net unrealized Check Yourself Before You Wreck Yourself! from available-for-sale to held-to-maturity				172
Amortization of net unrealized losses on securities transferred to held-to-maturity	0	0	0	0
Income tax expense (benefit)	625	(336)	819	3,214
Balance, end of period	101	4,823	101	4,823
Held-to-Maturity Securities Transferred from Available-For-Sale
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	(131)	(173)	(175)	0
Other comprehensive income (loss) before income taxes:
Net change in unrealized gains (losses)	0	0	0	0
Amounts reclassified for net (gains) losses realized and included in earnings	0	0	0	0
Transfer of net unrealized Check Yourself Before You Wreck Yourself! from available-for-sale to held-to-maturity				(172)
Amortization of net unrealized losses on securities transferred to held-to-maturity	(4)	(2)	(40)	(3)
Income tax expense (benefit)	0	0	0	0
Balance, end of period	(135)	(175)	(135)	(175)
Cash Flow Hedges (Effective Portion)
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Balance, beginning of period	(523)	(1,629)	(1,082)	(1,362)
Other comprehensive income (loss) before income taxes:
Net change in unrealized gains (losses)	(30)	73	50	(847)
Amounts reclassified for net (gains) losses realized and included in earnings	379	320	1,213	804
Transfer of net unrealized Check Yourself Before You Wreck Yourself! from available-for-sale to held-to-maturity				0
Amortization of net unrealized losses on securities transferred to held-to-maturity	0	0	0	0
Income tax expense (benefit)	135	152	490	(17)
Balance, end of period	$ (309)	$ (1,388)	$ (309)	$ (1,388)

Accumulated Other Comprehensi99

Accumulated Other Comprehensive Income - Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on deposits	$ (3,370)	$ (2,504)	$ (9,978)	$ (6,988)
Income tax benefit (expense)	(7,592)	(6,885)	(21,793)	(20,606)
Investment Securities Available-for-Sale | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on sale of investment securities	3	38	28	447
Income tax benefit (expense)	(1)	(15)	(11)	(173)
Net income	2	23	17	274
Cash Flow Hedges (Effective Portion) | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense on deposits	(379)	(320)	(1,213)	(804)
Income tax benefit (expense)	145	124	466	311
Net income	$ (234)	$ (196)	$ (747)	$ (493)