Atlantic Capital Bancshares (ACBI) 10-Q 10 Aug 20 2020 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 01, 2020
Document and Entity Information [Abstract]
Document Type	10-Q
Entity Registrant Name	ATLANTIC CAPITAL BANCSHARES, INC.
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-37615
Entity Incorporation, State or Country Code	GA
Entity Tax Identification Number	20-5728270
Entity Address, Address Line One	945 East Paces Ferry Road NE, Suite 1600
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30326
City Area Code	404
Local Phone Number	995-6050
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	ACBI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		21,605,292
Entity Central Index Key	0001461755
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 33,759	$ 45,249
Interest-bearing deposits in banks	33,038	421,079
Cash and cash equivalents	66,797	466,328
Investment securities available for sale	271,829	282,461
Investment securities held to maturity, net of allowance for credit losses of $13 at June 30, 2020	185,920	116,972
Other investments	28,811	27,556
Loans held for sale	1,153	370
Loans held for investment	2,184,694	1,873,524
Less: Allowance for credit losses	(31,605)	(18,535)
Loans held for investment, net	2,153,089	1,854,989
Premises and equipment, net	22,494	22,536
Bank owned life insurance	67,127	66,421
Goodwill	19,925	19,925
Other intangibles, net	2,731	3,027
Other real estate owned	779	278
Other assets	69,967	49,516
Total assets	2,890,622	2,910,379
Deposits:
Noninterest-bearing demand	883,662	824,646
Interest-bearing checking	449,737	373,727
Savings	583	1,219
Money market	879,863	1,173,218
Time	131,353	44,389
Brokered deposits	62,433	81,847
Total deposits	2,407,631	2,499,046
Federal funds purchased	6,000
Federal Home Loan Bank borrowings	50,000
Long-term debt	49,958	49,873
Other liabilities	41,053	34,965
Total liabilities	2,554,642	2,583,884
SHAREHOLDERS' EQUITY
Preferred Stock, no par value - 10,000,000 shares authorized; no shares issued and outstanding as of June 30, 2020 and December 31, 2019
Common stock, no par value - 100,000,000 shares authorized; 21,477,631 and 21,751,026 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively	224,520	230,265
Retained earnings	95,570	91,669
Accumulated other comprehensive income (loss)	15,890	4,561
Total shareholders' equity	335,980	326,495
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 2,890,622	$ 2,910,379

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Consolidated Balance Sheets
Investment securities held to maturity, net of allowance for credit losses	$ 13
Preferred stock par value	$ 0	$ 0
Preferred stock authorized (in shares)	10,000,000	10,000,000
Preferred stock issued (in shares)	0	0
Preferred stock outstanding (in shares)	0	0
Common stock par value	$ 0	$ 0
Common stock authorized (in shares)	100,000,000	100,000,000
Common stock issued (in shares)	21,477,631	21,751,026
Common stock outstanding (in shares)	21,477,631	21,751,026

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
INTEREST INCOME
Loans, including fees	$ 20,496,000	$ 23,554,000	$ 42,922,000	$ 46,306,000
Investment securities	3,041,000	2,339,000	5,773,000	4,970,000
Interest and dividends on other interest-earning assets	260,000	705,000	1,125,000	1,519,000
Total interest income	23,797,000	26,598,000	49,820,000	52,795,000
INTEREST EXPENSE
Interest on deposits	1,299,000	5,448,000	5,481,000	10,279,000
Interest on Federal Home Loan Bank advances	38,000	270,000	38,000	270,000
Interest on federal funds purchased and securities sold under agreements to repurchase	6,000	168,000	38,000	286,000
Interest on long-term debt	823,000	823,000	1,652,000	1,647,000
Total interest expense	2,166,000	6,709,000	7,209,000	12,482,000
NET INTEREST INCOME BEFORE PROVISION FOR CREDIT LOSSES	21,631,000	19,889,000	42,611,000	40,313,000
Provision for credit losses	8,863,000	698,000	16,937,000	1,512,000
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	12,768,000	19,191,000	25,674,000	38,801,000
NONINTEREST INCOME
Service charges	1,081,000	870,000	2,313,000	1,664,000
Gain on sales of securities		654,000		654,000
Gain (loss) on sales of other assets		(10,000)	5,000	(13,000)
Derivatives income (loss)	(10,000)	(233,000)	236,000	(344,000)
Bank owned life insurance	367,000	389,000	729,000	749,000
SBA lending activities	782,000	1,096,000	1,196,000	2,182,000
Other noninterest income	123,000	175,000	286,000	385,000
Total noninterest income	2,343,000	2,941,000	4,765,000	5,277,000
NONINTEREST EXPENSE
Salaries and employee benefits	8,466,000	8,529,000	16,942,000	17,742,000
Occupancy	883,000	689,000	1,677,000	1,328,000
Equipment and software	763,000	753,000	1,542,000	1,492,000
Professional services	792,000	792,000	1,497,000	1,567,000
Communications and data processing	670,000	662,000	1,567,000	1,337,000
Marketing and business development	79,000	233,000	232,000	459,000
Travel, meals and entertainment	34,000	186,000	174,000	352,000
FDIC premiums	175,000	175,000	175,000	410,000
Other noninterest expense	1,042,000	1,235,000	1,975,000	2,362,000
Total noninterest expense	12,904,000	13,254,000	25,781,000	27,049,000
INCOME FROM CONTINUING OPERATIONS BEFORE PROVISION FOR INCOME TAXES	2,207,000	8,878,000	4,658,000	17,029,000
Provision for income taxes	358,000	1,869,000	685,000	3,580,000
NET INCOME FROM CONTINUING OPERATIONS	1,849,000	7,009,000	3,973,000	13,449,000
Income from discontinued operations		30,107,000		28,690,000
Provision for income taxes		7,964,000		7,610,000
Net income from discontinued operations		22,143,000		21,080,000
NET INCOME	$ 1,849,000	$ 29,152,000	$ 3,973,000	$ 34,529,000
Net income per common share - basic
Net income per common share - continuing operations	$ 0.09	$ 0.29	$ 0.18	$ 0.55
Net income per common share - discontinued operations		0.93		0.87
Net income per common share - basic	0.09	1.22	0.18	1.42
Net income per common share diluted
Net income per common share - continuing operations	0.09	0.29	0.18	0.55
Net income per common share - discontinued operations		0.92		0.86
Net income per common share - diluted	$ 0.09	$ 1.21	$ 0.18	$ 1.41

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements of Comprehensive Income
Net income	$ 1,849	$ 29,152	$ 3,973	$ 34,529
Unrealized gains on available-for-sale securities:
Unrealized holding gains arising during the period, net of tax of $329, $1,524, $1,407 and $3,642, respectively	1,002	4,566	4,319	10,920
Reclassification adjustment for losses (gains) included in net income net of tax of ($164) and ($164), respectively		(490)		(490)
Unrealized gains on available-for-sale securities, net of tax	1,002	4,076	4,319	10,430
Cash flow hedges:
Net unrealized derivative gains on cash flow hedges, net of tax of $178, $805, $2,291, and $1,153, respectively	542	2,415	7,010	3,456
Changes from cash flow hedges	542	2,415	7,010	3,456
Other comprehensive income, net of tax	1,544	6,491	11,329	13,886
Comprehensive income	$ 3,393	$ 35,643	$ 15,302	$ 48,415

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements of Comprehensive Income
Tax portion of unrealized holding gains arising during the period	$ 329	$ 1,524	$ 1,407	$ 3,642
Tax portion of reclassification adjustment for losses (gains) included in net income	(164)	(164)	(164)	(164)
Tax portion of net unrealized derivative gains on cash flow hedges	$ 178	$ 805	$ 2,291	$ 1,153

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2018	$ 291,771	$ 42,187	$ (10,305)	$ 323,653
Beginning balance (in shares) at Dec. 31, 2018	25,290,419
Comprehensive income:
Net income		34,529		34,529
Change in unrealized gains (losses) on investment securities available-for-sale, net			10,430	10,430
Change in unrealized gains (losses) on cash flow hedges			3,456	3,456
Comprehensive income				48,415
Net issuance of restricted stock (in shares)	4,904
Issuance of common stock for option exercises	$ 471			471
Issuance of common stock for option exercises (in shares)	40,980
Issuance of common stock for long-term incentive plan	$ 655			655
Issuance of common stock for long-term incentive plan (in shares)	35,678
Restricted stock activity	$ 225			225
Stock-based compensation	133			133
Performance share compensation	154			154
Stock repurchases	$ (36,618)			(36,618)
Stock repurchases (in shares)	(2,078,516)
Ending balance at Jun. 30, 2019	$ 256,791	76,343	3,581	336,715
Ending balance (in shares) at Jun. 30, 2019	23,293,465
Beginning balance at Mar. 31, 2019	$ 276,346	47,191	(2,910)	320,627
Beginning balance (in shares) at Mar. 31, 2019	24,466,964
Comprehensive income:
Net income		29,152		29,152
Change in unrealized gains (losses) on investment securities available-for-sale, net			4,076	4,076
Change in unrealized gains (losses) on cash flow hedges			2,415	2,415
Comprehensive income				35,643
Net issuance of restricted stock (in shares)	(54,158)
Issuance of common stock for option exercises	$ 26			26
Issuance of common stock for option exercises (in shares)	1,880
Restricted stock activity	$ (149)			(149)
Stock-based compensation	52			52
Performance share compensation	59			59
Stock repurchases	$ (19,543)			(19,543)
Stock repurchases (in shares)	(1,121,221)
Ending balance at Jun. 30, 2019	$ 256,791	76,343	3,581	336,715
Ending balance (in shares) at Jun. 30, 2019	23,293,465
Comprehensive income:
Change in accounting principle		(373)		(373)
Beginning balance at Dec. 31, 2019	$ 230,265	91,669	4,561	$ 326,495
Beginning balance (in shares) at Dec. 31, 2019	21,751,026			21,751,026
Comprehensive income:
Net income		3,973		$ 3,973
Change in unrealized gains (losses) on investment securities available-for-sale, net			4,319	4,319
Change in unrealized gains (losses) on cash flow hedges			7,010	7,010
Comprehensive income				15,302
Net issuance of restricted stock (in shares)	59,258
Issuance of common stock for option exercises	$ 660			$ 660
Issuance of common stock for option exercises (in shares)	60,940			60,940
Issuance of common stock for long-term incentive plan	$ 444			$ 444
Issuance of common stock for long-term incentive plan (in shares)	25,265
Restricted stock activity	$ 497			497
Stock-based compensation	35			35
Performance share compensation	30			30
Stock repurchases	$ (7,411)			$ (7,411)
Stock repurchases (in shares)	(418,858)			(418,858)
Ending balance at Jun. 30, 2020	$ 224,520	95,570	15,890	$ 335,980
Ending balance (in shares) at Jun. 30, 2020	21,477,631			21,477,631
Beginning balance at Mar. 31, 2020	$ 224,233	93,721	14,346	$ 332,300
Beginning balance (in shares) at Mar. 31, 2020	21,479,986
Comprehensive income:
Net income		1,849		1,849
Change in unrealized gains (losses) on investment securities available-for-sale, net			1,002	1,002
Change in unrealized gains (losses) on cash flow hedges			542	542
Comprehensive income				3,393
Net issuance of restricted stock (in shares)	(2,355)
Restricted stock activity	$ 201			201
Stock-based compensation	18			18
Performance share compensation	68			68
Ending balance at Jun. 30, 2020	$ 224,520	95,570	$ 15,890	$ 335,980
Ending balance (in shares) at Jun. 30, 2020	21,477,631			21,477,631
Comprehensive income:
Change in accounting principle		$ (72)		$ (72)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net income from continuing operations	$ 3,973	$ 13,449
Net income from discontinued operations, net of tax		21,080
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	16,937	1,512
Depreciation, amortization, and accretion	2,486	1,721
Amortization of operating lease right-of-use assets	1,105	1,216
Amortization of restricted stock and performance share compensation	521	379
Stock option compensation	35	133
(Gain) loss on sales of available-for-sale securities		(654)
Loss on disposition of premises and equipment, net		13
Net write downs and gains on sales of other real estate owned	(5)
Small Business Investment Company (SBIC) impairment		26
Net increase in cash value of bank owned life insurance	(706)	(725)
Net (gains) on sale of branches		(34,475)
Origination of servicing assets	(302)	(625)
Proceeds from sales of SBA loans	17,938	35,711
Net (gains) on sale of SBA loans	(840)	(1,850)
Changes in operating assets and liabilities -
Net change in loans held for sale	(783)	5,889
Net (increase) decrease in other assets	(15,994)	5,440
Net decrease in accrued expenses and other liabilities	3,950	(13,730)
Net cash provided by operating activities	28,315	34,510
Activity in securities available-for-sale:
Prepayments	14,760	16,715
Maturities and calls	1,035	280
Sales		54,938
Purchases		(4,432)
Activity in securities held to maturity:
Purchases	(69,141)
Net change in loans held for investment	(330,214)	(96,802)
Net change in assets held for sale - discontinued operations		(11,789)
(Purchases) proceeds of Federal Home Loan Bank stock, net		(3,543)
(Purchases) proceeds of Federal Reserve Bank stock, net		(33)
Proceeds from sales of other real estate owned	88
Net cash received (paid) for branch divestiture		(166,755)
(Purchases) of premises and equipment, net	(2,208)	(773)
Net cash (used in) investing activities	(385,680)	(212,194)
FINANCING ACTIVITIES
Net change in deposits	(91,415)	(100,983)
Net change in liabilities to be assumed - discontinued operations		6,560
Net change in fed funds purchased	6,000	35,000
Proceeds from Federal Home Loan Bank advances	275,000	186,000
Repayments of Federal Home Loan Bank advances	(225,000)	(104,000)
Proceeds from exercise of stock options	660	471
Repurchase of common stock	(7,411)	(36,618)
Net cash (used in) financing activities	(42,166)	(13,570)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(399,531)	(191,254)
CASH AND CASH EQUIVALENTS - beginning of period	466,328	268,392
CASH AND CASH EQUIVALENTS - end of period	66,797	77,138
SUPPLEMENTAL SCHEDULE OF CASH FLOWS
Interest paid	6,453	14,237
Income taxes paid	$ 344	$ 95

Accounting Policies and Basis o

Accounting Policies and Basis of Presentation	6 Months Ended
	Jun. 30, 2020
Accounting Policies and Basis of Presentation
Accounting Policies and Basis of Presentation	NOTE 1 – ACCOUNTING POLICIES AND BASIS OF PRESENTATION Basis of Presentation The accounting and financial reporting policies of Atlantic Capital Bancshares, Inc. (“Atlantic Capital” or the “Company”) and its subsidiary, Atlantic Capital Bank, N.A. (the “Bank”), conform to accounting principles generally accepted in the United States of America (“GAAP”) and general banking industry practices. The accompanying interim consolidated financial statements have not been audited. All material intercompany balances and transactions have been eliminated. In management’s opinion, all accounting adjustments necessary to accurately reflect the financial position and results of operations on the accompanying financial statements have been made. These adjustments are normal and recurring accruals considered necessary for a fair and accurate presentation. Certain prior period amounts have been reclassified to conform to the current year presentation. The accompanying consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in Atlantic Capital’s Annual Report on Form 10-K. The results for interim periods are not necessarily indicative of results for the full year or any other interim periods. ​ Adoption of New Accounting Standard ​ On January 1, 2020, the Company adopted Accounting Standards Update (“ASU”) 2016-13 Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ​ The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a decrease to retained earnings of $72,000, net of tax, as of January 1, 2020 for the cumulative effect of adopting ASC 326. The transition adjustment includes a $1.3 million increase related to the allowance for credit losses on unfunded commitments mostly offset by an $854,000 decrease related to the allowance for credit losses on loans as well as a $20,000 increase related to held-to-maturity securities. ​ ​ The Company finalized the adoption as of January 1, 2020 as detailed in the following table ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ January 1, 2020 ​ ​ ​ ​ ​ ​ As Reported ​ ​ Impact of ​ ​ ​ Pre-ASC 326 ​ ​ Under ​ ​ ASC 326 (in thousands) ​ ​ Adoption ​ ​ ASC 326 ​ ​ Adoption (1) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on debt securities held-to-maturity ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions - tax-exempt ​ $ - ​ $ 13 ​ $ 13 U.S. states and political divisions - taxable ​ ​ - ​ ​ 7 ​ ​ 7 Total allowance for credit losses on debt securities held-to-maturity ​ ​ - ​ ​ 20 ​ ​ 20 Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ 9,015 ​ ​ 8,578 ​ ​ (437) Commercial real estate ​ ​ 7,504 ​ ​ 6,868 ​ ​ (636) Construction and land ​ 1,685 ​ ​ 1,819 ​ ​ 134 Residential mortgages ​ ​ 81 ​ ​ 108 ​ ​ 27 Home equity ​ ​ 63 ​ ​ 121 ​ ​ 58 Consumer ​ ​ 42 ​ ​ 101 ​ ​ 59 Other ​ ​ 145 ​ ​ 78 ​ ​ (67) Mortgage warehouse ​ ​ - ​ ​ 8 ​ ​ 8 Total allowance for credit losses on loans ​ ​ 18,535 ​ ​ 17,681 ​ ​ (854) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on unfunded commitments ​ ​ 892 ​ ​ 2,167 ​ ​ 1,275 Total allowance for credit losses ​ $ 19,427 ​ $ 19,868 ​ $ 441 (1) he adoption of CECL resulted in a reduction of retained earnings totaling $72,000 , net of tax. ​ Allowance for Credit Losses on Held-to-Maturity Securities ​ Management measures expected credit losses on held-to-maturity securities by individual security. Accrued interest receivable on held-to-maturity debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers credit ratings and historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. ​ The held-to-maturity portfolio consists entirely of municipal securities. Securities are generally rated A or higher. Securities are analyzed individually to establish a CECL mark. ​ Allowance for Credit Losses on Available-for-Sale Securities ​ For available-for-sale securities in an unrealized loss position, management first assesses whether it intends to sell, or is more likely than not be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For debt securities available-for-sale that do not meet the aforementioned criteria, Atlantic Capital evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income (“OCI”). ​ Changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Losses are charged against the allowance when management believes the uncollectibility of an available-for-sale security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities is not included in the estimate of credit losses. ​ Allowance for Credit Losses on Loans ​ The allowance for credit losses on loans is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed and recoveries are credited to the allowance when received. The Company may also account for expected recoveries should information of an anticipated recovery become available. In the case of actual or expected recoveries, amounts may not exceed the aggregate of amounts previously charged off. ​ Management utilizes relevant available information, from internal and external sources, relating to past events, current conditions, historical loss experience, and reasonable and supportable forecasts. The lookback period in the analysis includes historical data from June 2015 to present. Adjustments to historical loss information are made when management determines historical data are not likely reflective of the current portfolio such as limited data sets or lack of default or loss history. Management may selectively apply external market data to subjectively adjust the Company’s own loss history including index or peer data. Accrued interest receivable was excluded from the estimate of credit losses for loans. ​ Collective Assessment ​ The allowance for credit losses on loans is measured on a collective cohort basis when similar risk characteristics exist. Generally, collectively assessed loans are grouped by call report code and then risk grade grouping. Risk grade is grouped within each call code by pass, special mention, substandard, and doubtful. Other loan types are separated into their own cohorts due to specific risk characteristics for that pool of loans. Examples include CD-secured fintech loans, Small Business Administration (“SBA”) purchased loans, PPP loans and TriNet loans. ​ The Company has elected the discounted cash flows (“DCF”) methodology with probability of default (“PD”) and loss given default (“LGD”) for all call code cohorts and TriNet. CD-secured fintech loans, PPP loans and SBA purchased loans are measured with zero risk due to cash collateral and full guaranty, respectively. ​ The PD calculation looks at the historical loan portfolio at particular points in time (each month during the lookback period) to determine the probability that loans in a certain cohort will default over the next 12 month period. A default is defined as a loan that has moved to past due 90 days and greater, nonaccrual status, or experienced a charge-off during the period. In cohorts where the Company’s historical data are insufficient due to less than 20 loans on average in the pool or zero defaults, management uses index PDs in place of the Company’s historical PDs. Additionally, management reviews all other cohorts to determine if index PDs should be used outside of these criteria. ​ The LGD calculation looks at actual losses (net charge-offs) experienced over the entire lookback period for each cohort of loans. The aggregate loss amount is divided by the exposure at default to determine an LGD rate. All defaults (non-accrual, charge-off, or greater than 90 days past due) occurring during the lookback period are included in the denominator, whether a loss occurred or not and exposure at default is determined by the loan balance immediately preceding the default event (i.e. nonaccrual or charge-off). Due to very limited charge-off history, management uses index LGDs in place of the Company’s historical LGDs. ​ The Company utilizes reasonable and supportable forecasts of future economic conditions when estimating the allowance for credit losses on loans. The calculation includes a 12-month PD forecast based on the Company’s regression model comparing peer nonperforming loan ratios to the national unemployment rate and the most recently published Wall Street Journal survey of economists’ forecast. After the forecast period, PD rates revert on a straight-line basis to long-term average rates over a 12-month period. ​ The Company recognizes that all significant factors that affect the collectability of the loan portfolio must be considered to determine the estimated credit losses as of the evaluation date. Furthermore, the DCF methodology, in and of itself and even when selectively adjusted by comparison to market and peer data, does not provide a sufficient basis to determine the estimated credit losses. The Company adjusts the modeled historical losses by a Qualitative and Environmental factor to incorporate all significant risks to form a sufficient basis to estimate the credit losses. ​ Individual Assessment ​ Loans classified as Nonaccrual, Troubled Debt Restructuring (“TDR”), or Reasonably Expected TDR will be reviewed quarterly for potential individual assessment. Any loan classified as a Nonaccrual or TDR that is not determined to need individual assessment will be evaluated collectively within its respective cohort. All Reasonably Expected TDR loans will be evaluated individually to account for expected modifications in loan terms. ​ Where the primary and/or expected source of repayment of a specific loan is believed to be the future liquidation of available collateral, impairment will generally be measured based upon expected future collateral proceeds, net of disposition expenses including sales commissions as well as other costs potentially necessary to sell the asset(s) (i.e. past due taxes, liens, etc.) Estimates of future collateral proceeds will be based upon available appraisals, reference to recent valuations of comparable properties, use of consultants or other professionals with relevant market and/or property-specific knowledge, and any other sources of information believed appropriate by management under the specific circumstances. When appraisals are ordered to support the impairment analysis of an impaired loan, the appraisal is reviewed by Atlantic Capital’s internal appraisal reviewer or a qualified third party reviewer. ​ Where the primary and/or expected source of repayment of a specific loan is believed to be the receipt of principal and interest payments from the borrower and/or the refinancing of the loan by another creditor, impairment will generally be measured based upon the present value of expected proceeds discounted at the contractual interest rate. Expected refinancing proceeds may be estimated from review of term sheets actually received by the borrower from other creditors and/or from the Company’s knowledge of terms generally available from other banks, asset-based lenders, factoring companies and institutional lenders (Government Sponsored Entities, insurance companies, etc.) ​ Determining the Contractual Term ​ Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company. Prepayment assumptions will be determined by analysis of historical behavior by loan cohort. ​ Troubled Debt Restructurings ​ A loan for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a TDR. Any loan that is being considered for modification and expected to result in a TDR is identified as a Reasonably Expected TDR. Reasonably Expected TDRs are assessed in the CECL calculation utilizing their expected modified terms. The allowance for credit losses on a TDR is measured using the same method as all other loans held for investment, except that the original interest rate is used to discount the expected cash flows when a rate modification has occurred. ​ Allowance for Credit Losses on Unfunded Commitments ​ Atlantic Capital estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by Atlantic Capital. The allowance for credit losses on unfunded commitments is adjusted through a provision for credit loss expense. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. The estimate utilizes the same factors and assumptions as the allowance for credit losses on loans and is applied at the same collective cohort level.

Accounting Standards Updates an

Accounting Standards Updates and Recently Adopted Standards	6 Months Ended
	Jun. 30, 2020
Accounting Standards Updates and Recently Adopted Standards
Accounting Standards Updates and Recently Adopted Standards	NOTE 2 – ACCOUNTING STANDARDS UPDATES AND RECENTLY ADOPTED STANDARDS Recently Adopted Accounting Pronouncements In March 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-04, “ Reference Rate Reform (Topic 848) – Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The amendments in this update provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by the discontinuance of London Interbank Offered Rate (“LIBOR”). ASU 2020-04 is effective as of March 12, 2020 through December 31, 2022. The Company is in the process of evaluating the impact that the discontinuance of LIBOR will have on its existing contracts and consolidated financial statements. ​ In May 2019, the FASB issued ASU No. 2019-05, “ Financial Instruments - Credit Losses (Topic 326); Targeted Transition Relief .” This ASU allows entities to irrevocably elect, upon adoption of ASU 2016-13, the fair value option on financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of ASC 326-20 if the instruments are eligible for the fair value option under ASC 825-10. The fair value option election does not apply to held-to-maturity debt securities. Entities are required to make this election on an instrument-by-instrument basis. ASU 2019-05 has the same effective date as ASU 2016-13 (i.e., the first quarter of 2020). The Company did not elect the fair value option, and therefore, ASU 2019-05 did not impact the Company’s consolidated financial statements. ​ In August 2018, the FASB issued ASU No. 2018-13, “F air Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.” The amendments in this update modify the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. The update is effective for interim and annual periods in fiscal years beginning after December 31, 2019, with early adoption permitted for the removed disclosures and delayed adoption until fiscal year 2020 permitted for new disclosures. The removed and modified disclosures will be adopted on a retrospective basis and the new disclosures will be adopted on a prospective basis. The adoption did not have a material effect on the Company’s consolidated financial statements. ​ In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” which intends to simplify goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. The update instead requires entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit’s fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. ASU 2017-04 must be applied prospectively and was effective for the Company on January 1, 2020. The new guidance did not have a material impact on its financial condition or results of operations. ​ In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 was effective for public companies for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted and this totaled $72,000 , net of tax. For more information, refer to Note 1 of the Consolidated Financial Statements. ​ ​ ​ Recently Issued Accounting Pronouncements Not Yet Adopted ​ In December 2019, the FASB issued ASU No. 2019-12, “Simplifying the Accounting for Income Taxes.” This ASU simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The new guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. Finally, it clarifies that single-member limited liability companies and similar disregarded entities that are not subject to income tax are not required to recognize an allocation of consolidated income tax expense in their separate financial statements, but they could elect to do so. ASU 2019-12 is effective for interim and annual reporting periods beginning after December 15, 2020, and early adoption is permitted. The Company is evaluating this ASU to determine any potential impact to the Company’s Consolidated Financial Statements. ​ In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This guidance shortens the premium amortization period for certain callable debt securities by requiring amortization to the earliest call date. The standard is effective for public companies for annual and interim periods beginning after December 15, 2020. The adoption of this update is not expected to have a material impact on Atlantic Capital’s consolidated financial statements. ​

Acquisitions and Divestitures

Acquisitions and Divestitures	6 Months Ended
	Jun. 30, 2020
Acquisitions and Divestitures
Acquisitions and Divestitures	NOTE 3 – ACQUISITIONS AND DIVESTITURES Discontinued Operations On April 5, 2019, the Bank completed the sale to FirstBank of its Tennessee and northwest Georgia banking operations, including 14 branches and the mortgage business (the “Branch Sale”). FirstBank assumed deposits and customer repurchase agreements of approximately $598 million and purchased approximately $385 million in loans. FirstBank paid a deposit premium equal to 6.25% of the balance of assumed deposits, less a discount of 0.68% of purchased loans. The income and expenses related to these branches for the three and six months ended June 30, 2019 are included in discontinued operations. The following table presents results of the discontinued operations for the three and six months ended June 30, 2019: Components of Net Income from Discontinued Operations ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended (in thousands) June 30, 2019 June 30, 2019 Net interest income (loss) ​ $ (39) ​ $ 3,086 Service charges ​ 46 ​ 527 Mortgage income ​ — ​ 288 Gain on sale of branches ​ 34,475 ​ 34,475 Other income ​ (22) ​ (1) Total noninterest income ​ 34,499 ​ 35,289 Salaries and employee benefits ​ 330 ​ 2,757 Occupancy ​ 71 ​ 410 Equipment and software ​ 8 ​ 131 Amortization of intangibles ​ — ​ 247 Communications and data processing ​ 197 ​ 586 Divestiture expense ​ 3,646 ​ 5,095 Other noninterest expense ​ 101 ​ 459 Total noninterest expense ​ 4,353 ​ 9,685 Net income before provision for income taxes ​ 30,107 ​ 28,690 Provision for income taxes ​ 7,964 ​ 7,610 Net income from discontinued operations ​ $ 22,143 ​ $ 21,080 ​ There were no assets or liabilities related to discontinued operations on the Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019. ​

Balance Sheet Offsetting

Balance Sheet Offsetting	6 Months Ended
	Jun. 30, 2020
Balance Sheet Offsetting
Balance Sheet Offsetting	​ ​ NOTE 4 – BALANCE SHEET OFFSETTING Atlantic Capital enters into reverse repurchase agreements to invest short-term funds. Atlantic Capital enters into repurchase agreements for short-term financing needs. The following table presents a summary of amounts outstanding in derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements at June 30, 2020 and December 31, 2019. While these agreements are typically over-collateralized, GAAP requires disclosures in this table to limit the amount of such collateral to the amount of the related recognized asset or liability for each counterparty. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ (in thousands) ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ June 30, 2020 ​ Assets ​ Balance Sheet ​ Balance ​ Instruments ​ Received ​ Net Amount Derivatives ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 Total ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — Total ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ ​ Gross ​ ​ ​ ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ December 31, 2019 Assets Balance Sheet Balance Instruments Received Net Amount Derivatives ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 Total ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ — Total ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ — ​

Securities

Securities	6 Months Ended
	Jun. 30, 2020
Securities
Securities	NOTE 5 – SECURITIES The following table presents the amortized cost, fair value, and allowance for credit losses on securities available-for-sale and held-to-maturity at June 30, 2020 and December 31, 2019 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) and gross unrecognized gains and losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ ​ ​ ​ ​ ​ ​ ​ ​ Cost Gains Losses Fair Value ​ ​ ​ ​ ​ ​ (in thousands) ​ ​ ​ June 30, 2020 ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 80,744 ​ $ 2,411 ​ $ (13) ​ $ 83,142 ​ ​ ​ ​ ​ ​ Trust preferred securities ​ 4,821 ​ — ​ (446) ​ ​ 4,375 ​ ​ ​ ​ Corporate debt securities ​ 19,541 ​ 294 ​ (152) ​ ​ 19,683 ​ ​ ​ ​ Residential mortgage-backed securities ​ 157,813 ​ 6,832 ​ (16) ​ ​ 164,629 ​ ​ ​ ​ Total available-for-sale ​ ​ 262,919 ​ ​ 9,537 ​ ​ (627) ​ ​ 271,829 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ Allowance ​ Net ​ ​ Amortized ​ Unrecognized ​ Unrecognized ​ ​ ​ ​ for Credit ​ Carrying ​ ​ Cost ​ Gains ​ Losses ​ Fair Value ​ Losses ​ Value Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 185,933 ​ ​ 8,795 ​ ​ (66) ​ ​ 194,662 ​ ​ (13) ​ ​ 185,920 Total held-to-maturity ​ ​ 185,933 ​ ​ 8,795 ​ ​ (66) ​ ​ 194,662 ​ ​ (13) ​ ​ 185,920 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total securities ​ $ 448,852 ​ $ 18,332 ​ $ (693) ​ $ 466,491 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ Amortized ​ Unrealized ​ Unrealized ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ Cost ​ Gains ​ Losses ​ Fair Value ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 81,865 ​ $ 863 ​ $ (243) ​ $ 82,485 ​ ​ ​ ​ ​ ​ Trust preferred securities ​ 4,808 ​ — ​ (120) ​ ​ 4,688 ​ ​ ​ ​ ​ ​ Corporate debt securities ​ 19,557 ​ 363 ​ — ​ ​ 19,920 ​ ​ ​ ​ ​ ​ Residential mortgage-backed securities ​ 173,047 ​ 2,797 ​ (476) ​ ​ 175,368 ​ ​ ​ ​ ​ ​ Total available-for-sale ​ ​ 279,277 ​ ​ 4,023 ​ ​ (839) ​ ​ 282,461 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 116,972 ​ ​ 104 ​ ​ (1,785) ​ ​ 115,291 ​ ​ ​ ​ ​ ​ Total held-to-maturity ​ ​ 116,972 ​ ​ 104 ​ ​ (1,785) ​ ​ 115,291 ​ ​ ​ ​ ​ ​ Total securities ​ $ 396,249 ​ $ 4,127 ​ $ (2,624) ​ $ 397,752 ​ ​ ​ ​ ​ ​ ​ The following table presents the activity in the allowance for credit losses on securities held-to-maturity by major security type for the three and six months ended June 30, 2020. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ ​ 2020 ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total ​ (in thousands) Allowance for credit losses on securities held-to-maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance $ 10 ​ $ 4 ​ $ 14 Provision for credit losses ​ (1) ​ — ​ ​ (1) Securities charged-off ​ ​ — ​ ​ — ​ ​ — Recoveries ​ — ​ — ​ ​ — Total ending allowance balance $ 9 ​ $ 4 ​ $ 13 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, ​ ​ 2020 ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total ​ ​ (in thousands) Allowance for credit losses on securities held-to-maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance $ — ​ $ — ​ $ — Impact of adopting ASU 2016-13 ​ ​ 13 ​ ​ 7 ​ ​ 20 Provision for credit losses ​ (4) ​ (3) ​ ​ (7) Securities charged-off ​ ​ — ​ ​ — ​ ​ — Recoveries ​ — ​ — ​ ​ — Total ending allowance balance $ 9 ​ $ 4 ​ $ 13 ​ Management measures expected credit losses on held-to-maturity debt securities on an individual basis. Accrued interest receivable on held-to-maturity debt securities totaled $2.0 million at June 30, 2020 and $796,000 at December 31, 2019, and is recorded in Other Assets on the Consolidated Balance Sheets and is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Accrued interest receivable on available-for-sale debt securities totaled $1.1 million at June 30, 2020, and is recorded in Other Assets on the Consolidated Balance Sheets and is not included in the estimate of credit losses. Atlantic Capital monitors the credit quality of debt securities held-to-maturity quarterly through the use of credit rating, material event notices, and changes in market value. The following table summarizes the amortized cost of debt securities held-to-maturity at June 30, 2020, aggregated by credit quality indicator. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held-to-Maturity ​ ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total June 30, 2020 ​ (in thousands) Aa1 $ 32,321 ​ $ 7,748 ​ $ 40,069 Aa2 ​ ​ ​ 32,173 ​ ​ 20,871 ​ ​ 53,044 Aa3 ​ ​ 19,452 ​ 4,047 ​ ​ 23,499 Aaa ​ ​ ​ 48,550 ​ ​ 20,771 ​ ​ 69,321 Total $ 132,496 ​ $ 53,437 ​ $ 185,933 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, 2020, there were no debt The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at June 30, 2020. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ Held-to-Maturity ​ Amortized Fair Amortized Fair ​ ​ Cost ​ Value ​ Cost ​ Value ​ (in thousands) Within 1 year ​ $ 6,030 ​ $ 6,182 ​ $ — ​ $ — Over 1 year through 5 years ​ 4,536 ​ 4,712 ​ — ​ — 5 years to 10 years ​ 36,260 ​ 36,564 ​ 318 ​ 319 Over 10 years ​ 58,280 ​ 59,742 ​ 185,615 ​ 194,343 ​ ​ 105,106 ​ 107,200 ​ 185,933 ​ 194,662 Residential mortgage-backed securities ​ 157,813 ​ 164,629 ​ — ​ — Total ​ $ 262,919 ​ $ 271,829 ​ $ 185,933 ​ $ 194,662 ​ The following table summarizes available-for-sale and held-to-maturity securities in an unrealized loss position as of June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 12 months ​ 12 months or greater ​ Totals ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized June 30, 2020 Value Losses Value Losses Value Losses ​ (in thousands) Available-for-Sale ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 1,977 ​ $ (13) ​ $ — ​ $ — ​ $ 1,977 ​ $ (13) Trust preferred securities ​ — ​ — ​ 4,375 ​ (446) ​ 4,375 ​ (446) Corporate debt securities ​ 9,848 ​ (152) ​ — ​ — ​ 9,848 ​ (152) Residential mortgage-backed securities ​ — ​ — ​ 1,972 ​ (16) ​ 1,972 ​ (16) Total available-for-sale ​ ​ 11,825 ​ ​ (165) ​ ​ 6,347 ​ ​ (462) ​ ​ 18,172 ​ ​ (627) Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 16,333 ​ ​ (66) ​ ​ — ​ ​ — ​ ​ 16,333 ​ ​ (66) Total held-to-maturity ​ ​ 16,333 ​ ​ (66) ​ ​ — ​ ​ — ​ ​ 16,333 ​ ​ (66) Total securities ​ $ 28,158 ​ $ (231) ​ $ 6,347 ​ $ (462) ​ $ 34,505 ​ $ (693) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-for-Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 20,019 ​ $ (190) ​ $ 4,090 ​ $ (53) ​ $ 24,109 ​ $ (243) Trust preferred securities ​ — ​ — ​ 4,687 ​ (120) ​ 4,687 ​ (120) Residential mortgage-backed securities ​ 10,751 ​ (78) ​ 30,292 ​ (398) ​ 41,043 ​ (476) Total available-for-sale ​ ​ 30,770 ​ ​ (268) ​ ​ 39,069 ​ ​ (571) ​ ​ 69,839 ​ ​ (839) Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 96,854 ​ ​ (1,785) ​ ​ — ​ ​ — ​ ​ 96,854 ​ ​ (1,785) Total held-to-maturity ​ ​ 96,854 ​ ​ (1,785) ​ ​ — ​ ​ — ​ ​ 96,854 ​ ​ (1,785) Total securities ​ $ 127,624 ​ $ (2,053) ​ $ 39,069 ​ $ (571) ​ $ 166,693 ​ $ (2,624) ​ At June 30, 2020, there were six available-for-sale securities and eight held-to-maturity securities that were in an unrealized loss position. At December 31, 2019, there were 77 available-for-sale securities and 35 held-to-maturity securities that were in an unrealized loss position. Atlantic Capital does not intend to sell and does not believe it will be required to sell securities in an unrealized loss position prior to the recovery of their amortized cost basis. Unrealized losses at June 30, 2020 and December 31, 2019 were attributable to changes in market interest rates. No credit impairment was recorded for those securities in an unrealized loss position for the three and six months of 2020 or 2019. Realized gains and losses are derived using the specific identification method for determining the cost of securities sold. The following table summarizes securities sales activity for the three and six months ended June 30, 2020 and 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ 2020 2019 2020 2019 ​ ​ (in thousands) ​ Proceeds from sales ​ $ — ​ $ 54,938 ​ $ — ​ $ 54,938 ​ Gross realized gains ​ ​ — ​ $ 1,122 ​ $ — ​ $ 1,122 ​ Gross realized losses ​ — ​ (468) ​ — ​ (468) ​ Net gains on sales of securities ​ $ — ​ $ 654 ​ $ — ​ $ 654 ​ ​ ​ Investment securities with a carrying value of $31.2 million and $32.3 million were pledged to secure public funds and other borrowings at June 30, 2020 and December 31, 2019, respectively. As of June 30, 2020 and December 31, 2019, Atlantic Capital had investments with a carrying value of $5.1 million and $4.7 million, respectively, in Small Business Investment Companies (“SBICs”) where Atlantic Capital is the limited partner. These investments are included in other assets on the Consolidated Balance Sheets. During the first six months of 2020, the Company did not record any impairment on these SBICs. For the same period in 2019, the Company recorded impairment in the amount of $26,000 on these SBICs. The impairment resulted from deterioration in the credit quality of one of the SBICs and their inability to pay distributions until their financial position improves. There have been no upward adjustments, cumulatively or year-to-date, on these investments.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2020
Loans and Allowance for Loan Losses
Loans and Allowance for Loan Losses	NOTE 6 – LOANS AND ALLOWANCE FOR CREDIT LOSSES The composition of the loan portfolio as of June 30, 2020 and December 31, 2019, is summarized below. ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Loans held for sale ​ ​ Loans held for sale ​ 1,153 ​ 370 Total loans held for sale ​ $ 1,153 ​ $ 370 ​ ​ ​ ​ ​ ​ ​ Loans held for investment ​ ​ Commercial loans: ​ ​ Commercial and industrial ​ $ 973,818 ​ $ 705,115 Commercial real estate ​ 900,321 ​ 916,328 Construction and land ​ 128,991 ​ 127,540 Mortgage warehouse participations ​ — ​ 13,941 Total commercial loans ​ 2,003,130 ​ 1,762,924 Residential: ​ ​ ​ ​ Residential mortgages ​ 32,327 ​ 31,315 Home equity ​ 23,689 ​ 25,002 Total residential loans ​ 56,016 ​ 56,317 Consumer ​ 113,149 ​ 37,765 Other ​ 22,160 ​ 19,552 Total loans ​ 2,194,455 ​ 1,876,558 Less net deferred fees and other unearned income ​ (9,761) ​ (3,034) Less allowance for credit losses on loans ​ (31,605) ​ (18,535) Loans held for investment, net ​ $ 2,153,089 ​ $ 1,854,989 ​ At June 30, 2020 and December 31, 2019, loans with a carrying value of $358.9 million and $729.6 million, respectively, were pledged as collateral to secure Federal Home Loan Bank of Atlanta (“FHLB”) advances and the Federal Reserve discount window. The fair value adjustments on purchased loans outside the scope of ASC 310-30 are accreted to interest income over the life of the loans. At June 30, 2020, the remaining accretable fair value discount on loans acquired through a business combination and not accounted for under ASC 310-30 was $313,000 compared to $279,000 at December 31, 2019. The allowance for credit losses on loans is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. It is comprised of specific allowance for individually assessed loans and a general allowance for loans that are collectively assessed in pools with similar risk characteristics. The allowance is regularly evaluated to maintain a level adequate to absorb expected losses inherent in the loan portfolio. Refer to Note 1, “Accounting Policies and Basis of Presentation” to the Consolidated Financial Statements for additional information. Accrued interest receivable totaled $9.3 million at June 30, 2020, was reported in Other Assets on the Consolidated Balance Sheets and was excluded from the estimate of credit losses for loans. ​ The following table presents the balance and activity in the allowance for credit losses on loans by portfolio segment for the three months ended June 30, 2020 and 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ ​ 2020 ​ 2019 ​ ​ Commercial ​ Residential ​ Consumer ​ Total ​ Commercial ​ Residential ​ Consumer ​ Total ​ ​ (in thousands) Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance, prior to adoption of ASC 326 ​ $ 23,830 ​ $ 415 ​ $ 651 ​ $ 24,896 ​ $ 17,397 ​ $ 447 ​ $ 263 ​ $ 18,107 Provision for loan losses ​ 8,482 ​ ​ 138 ​ ​ (398) ​ 8,222 ​ 1,055 ​ (283) ​ (74) ​ 698 Loans charged-off (1,479) ​ ​ (36) ​ ​ — (1,515) (635) — — (635) Recoveries ​ 1 ​ ​ — ​ ​ 1 ​ 2 ​ — ​ — ​ 16 ​ 16 Total ending allowance balance ​ $ 30,834 ​ $ 517 ​ $ 254 ​ $ 31,605 ​ $ 17,817 ​ $ 164 ​ $ 205 ​ $ 18,186 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, ​ ​ 2020 ​ 2019 ​ ​ Commercial ​ Residential ​ Consumer ​ Total ​ Commercial ​ Residential ​ Consumer ​ Total ​ ​ (in thousands) Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance, prior to adoption of ASC 326 ​ $ 18,203 ​ $ 145 ​ $ 187 ​ $ 18,535 ​ $ 17,322 ​ $ 292 ​ $ 237 ​ $ 17,851 Impact of adopting ASC 326 ​ ​ (947) ​ ​ 8 ​ ​ 85 ​ ​ (854) ​ ​ — ​ ​ — ​ ​ — ​ ​ — Provision for loan losses ​ 15,134 ​ ​ 524 ​ ​ (27) ​ 15,631 ​ 1,662 ​ (127) ​ (23) ​ 1,512 Loans charged-off (1,575) ​ ​ (161) ​ ​ — (1,736) (1,184) (9) (37) (1,230) Recoveries ​ 19 ​ ​ 1 ​ ​ 9 ​ 29 ​ 17 ​ 8 ​ 28 ​ 53 Total ending allowance balance ​ $ 30,834 ​ $ 517 ​ $ 254 ​ $ 31,605 ​ $ 17,817 ​ $ 164 ​ $ 205 ​ $ 18,186 ​ A charge-off is recognized when the amount of the loss is quantifiable and timing is known. A collateral based loan charge-off is measured based on the difference between the loan’s carrying value, including deferred fees, and the estimated net realizable value of the loan. When assessing property value for the purpose of determining a charge-off, a third-party appraisal or an independently derived internal evaluation is generally employed. ​ Nonaccrual loans include both homogeneous loans that are collectively evaluated for impairment and individually evaluated impaired loans. Atlantic Capital’s policy is to place loans on nonaccrual status when, in the opinion of management, the principal and interest on a loan is not likely to be repaid in accordance with the loan terms or when the loan becomes 90 days past due and is not well secured and in the process of collection. When a loan is classified on nonaccrual status, interest previously accrued but not collected is reversed against current interest revenue. Principal and interest payments received on a nonaccrual loan are applied to reduce outstanding principal. ​ Troubled Debt Restructurings ​ TDRs are made to provide relief to customers experiencing liquidity challenges or other circumstances that could affect their ability to meet their debt obligations. Typical modifications include short-term deferral of interest or modification of payment terms. Nonperforming TDRs do not accrue interest and are included as nonperforming assets (“NPAs”) within nonaccrual loans (“NPLs”). TDRs which are accruing interest based on the restructured terms are considered performing. As of June 30, 2020 and December 31, 2019, the Company had a recorded investment in TDRs of $14.6 million and $13.2 million, respectively. The Company allocated $793,000 in allowance for those loans at June 30, 2020 and had no commitments to lend additional funds on loans modified as TDRs as of June 30, 2020. The Company had commitments to lend additional funds of $4,000 on loans modified as TDRs as of December 31, 2019. ​ ​ ​ Loans, by portfolio class, modified as TDRs during the three and six months ended June 30, 2020 and 2019 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pre-Modification ​ ​ Post-Modification ​ ​ ​ ​ Outstanding ​ ​ Outstanding ​ Number of Loans Recorded Investment Recorded Investment ​ ​ ​ ​ (in thousands) Three Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ — ​ $ — ​ $ — Total — ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial 1 ​ $ 67 ​ $ 67 Commercial real estate 1 ​ 1,945 ​ 1,945 Total 2 ​ $ 2,012 ​ $ 2,012 ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, 2019 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ 3 ​ $ 382 ​ $ 382 Total 3 ​ $ 382 ​ $ 382 ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2019 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial 6 ​ $ 1,235 ​ $ 1,235 Commercial real estate 2 ​ 926 ​ 926 Total 8 ​ $ 2,161 ​ $ 2,161 ​ The Company did not forgive any principal on TDRs during the three and six months ended June 30, 2020 and 2019. ​ During the three and six months ended June 30, 2020, two commercial loans totaling $320,000, which were previously modified as TDRs, had a payment default within twelve months following the modification. These TDRs that subsequently defaulted decreased the allowance for credit losses by $20,000 due to a paydown and did not result in any charge-offs during the three and six months ended June 30, 2020. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. ​ Section 4013 “Temporary Relief From Troubled Debt Restructurings,” of the Coronavirus Aid, Relief, and Economic Security Act, passed by Congress and signed into law on March 27, 2020, allows financial institutions the option to temporarily suspend certain requirements under U.S. GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. On April 7, 2020, the Federal Financial Institutions Examination Council provided additional guidance in its Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus (Revised). This guidance received concurrence from the FASB and clarified that loan modifications made under the following criteria are generally not considered TDRs if: ​ ● the modification is in response to the National Emergency; ● the borrower was current on payments at the time the modification program is implemented; and ● the modification is short-term (e.g., six months). ​ Atlantic Capital individually rates loans based on internal credit risk ratings using numerous factors, including thorough analysis of historical and expected cash flows, consumer credit risk scores (Fair Isaac Corporation (FICO) scores), rating agency information, loan-to-value ratios, collateral, collection experience, and other internal metrics. The likelihood of default of a credit transaction is graded in the Obligor Rating and is determined through credit analysis. Ratings are generally reviewed at least annually or more frequently if there is a material change in creditworthiness. Exceptions to this policy may include loans with commitments less than $1 million, well-collateralized term loans and loans to individuals with limited exposure or complexity. ​ Atlantic Capital uses the following definitions for risk ratings: Pass: Special Mention: Substandard: Doubtful: ​ As of June 30, 2020, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans Amortized Cost Basis by Origination Year ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ ​ ​ ​ 2020 2019 2018 2017 2016 Prior Cost Basis Total ​ ​ (in thousands) ​ ​ ​ June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial - commercial and industrial: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 322,442 ​ $ 160,555 ​ $ 112,710 ​ $ 50,353 ​ $ 38,884 ​ $ 18,496 ​ $ 188,250 ​ $ 891,690 Special mention ​ — ​ 5,405 ​ 23,277 ​ 1,519 ​ — ​ ​ 349 ​ ​ 30,546 ​ 61,096 Substandard ​ — ​ 1,929 ​ 4,943 ​ 2,214 ​ 1,059 ​ ​ 6,505 ​ ​ 4,344 ​ 20,994 Doubtful ​ — ​ 342 ​ — ​ — ​ — ​ ​ (304) ​ ​ — ​ 38 Total commercial - commercial and industrial ​ $ 322,442 ​ $ 168,231 ​ $ 140,930 ​ $ 54,086 ​ $ 39,943 ​ $ 25,046 ​ $ 223,140 ​ $ 973,818 Commercial - commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 48,120 ​ $ 169,996 ​ $ 141,651 ​ $ 106,354 ​ $ 139,914 ​ $ 228,636 ​ $ 8,977 ​ $ 843,648 Special mention ​ — ​ 2,879 ​ 5,521 ​ 1,099 ​ 10,533 ​ ​ 4,221 ​ ​ — ​ 24,253 Substandard ​ — ​ 11,532 ​ 1,591 ​ 3,003 ​ — ​ ​ 16,244 ​ ​ 50 ​ 32,420 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total commercial - commercial real estate loans ​ $ 48,120 ​ $ 184,407 ​ $ 148,763 ​ $ 110,456 ​ $ 150,447 ​ $ 249,101 ​ $ 9,027 ​ $ 900,321 Commercial - construction and land: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 34,958 ​ $ 52,732 ​ $ 24,113 ​ $ — ​ $ 4,407 ​ $ 1,982 ​ $ 1,845 ​ $ 120,037 Special mention ​ — ​ 8,954 ​ — ​ — ​ — ​ ​ — ​ ​ — ​ 8,954 Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total commercial - construction and land loans ​ $ 34,958 ​ $ 61,686 ​ $ 24,113 ​ $ — ​ $ 4,407 ​ $ 1,982 ​ $ 1,845 ​ $ 128,991 Residential - mortgages: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 2,972 ​ $ 3,241 ​ $ 15,687 ​ $ 1,977 ​ $ 5,256 ​ $ 232 ​ $ 227 ​ $ 29,592 Special mention ​ 697 ​ — ​ 862 ​ 768 ​ — ​ ​ — ​ ​ — ​ 2,327 Substandard ​ — ​ — ​ 179 ​ — ​ 26 ​ ​ 203 ​ ​ — ​ 408 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total residential - mortgage loans ​ $ 3,669 ​ $ 3,241 ​ $ 16,728 ​ $ 2,745 ​ $ 5,282 ​ $ 435 ​ $ 227 ​ $ 32,327 Residential - home equity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,689 ​ $ 23,689 Special mention ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total residential - home equity loans ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,689 ​ $ 23,689 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 250 ​ $ 2,283 ​ $ 53 ​ $ 64 ​ $ 70 ​ $ 106,865 ​ $ 3,564 ​ $ 113,149 Special mention ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total consumer loans ​ $ 250 ​ $ 2,283 ​ $ 53 ​ $ 64 ​ $ 70 ​ $ 106,865 ​ $ 3,564 ​ $ 113,149 Consumer - other: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ — ​ $ 4,794 ​ $ 2,112 ​ $ 232 ​ $ 784 ​ $ 6,982 ​ $ 14,904 Special mention ​ — ​ 6,798 ​ — ​ — ​ — ​ ​ — ​ ​ — ​ 6,798 Substandard ​ — ​ — ​ — ​ 458 ​ — ​ ​ — ​ ​ — ​ 458 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total consumer - other loans ​ $ — ​ $ 6,798 ​ $ 4,794 ​ $ 2,570 ​ $ 232 ​ $ 784 ​ $ 6,982 ​ $ 22,160 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 408,742 ​ $ 388,807 ​ $ 299,008 ​ $ 160,860 ​ $ 188,763 ​ $ 356,995 ​ $ 233,534 ​ $ 2,036,709 Special Mention ​ ​ 697 ​ ​ 24,036 ​ ​ 29,660 ​ ​ 3,386 ​ ​ 10,533 ​ ​ 4,570 ​ ​ 30,546 ​ ​ 103,428 Substandard ​ ​ — ​ ​ 13,461 ​ ​ 6,713 ​ ​ 5,675 ​ ​ 1,085 ​ ​ 22,952 ​ ​ 4,394 ​ ​ 54,280 Doubtful ​ ​ — ​ ​ 342 ​ ​ — ​ ​ — ​ ​ — ​ ​ (304) ​ ​ — ​ ​ 38 Total ​ $ 409,439 ​ $ 426,646 ​ $ 335,381 ​ $ 169,921 ​ $ 200,381 ​ $ 384,213 ​ $ 268,474 ​ $ 2,194,455 ​ As of December 31, 2019, the risk category of loans by class of loans is as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ Substandard ​ Substandard ​ Doubtful ​ ​ ​ Pass Mention Accruing Nonaccruing Nonaccruing Total ​ (in thousands) December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 648,895 $ 40,179 $ 10,051 $ 5,990 $ - $ 705,115 Commercial real estate ​ ​ 891,078 ​ ​ 5,483 ​ ​ 19,504 ​ ​ 263 ​ ​ - ​ ​ 916,328 Construction and land ​ ​ 127,540 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 127,540 Residential mortgages ​ ​ 30,941 ​ ​ - ​ ​ 119 ​ ​ 151 ​ ​ 104 ​ ​ 31,315 Home equity ​ ​ 24,302 ​ ​ - ​ ​ - ​ ​ 700 ​ ​ - ​ ​ 25,002 Mortgage warehouse ​ ​ 13,941 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 13,941 Consumer/Other ​ ​ 56,336 ​ ​ 500 ​ ​ 481 ​ ​ - ​ ​ - ​ ​ 57,317 Total Loans ​ $ 1,793,033 ​ $ 46,162 ​ $ 30,155 ​ $ 7,104 ​ $ 104 ​ $ 1,876,558 ​ ​ The following table presents the amortized cost basis of loans on nonaccrual status and loans past due over 89 days still accruing as of June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nonaccrual ​ ​ Nonaccrual ​ ​ ​ ​ ​ Loans Past ​ ​ ​ With No ​ ​ With ​ ​ ​ ​ ​ Due Over ​ ​ ​ Allowance for ​ ​ Allowance for ​ ​ Total ​ ​ 89 Days ​ ​ Credit Losses ​ Credit Losses ​ Nonaccrual ​ Still Accruing Commercial loans: ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 3,177 $ 2,481 $ 5,658 $ — Commercial real estate ​ 157 ​ — ​ 157 ​ — Total commercial loans ​ 3,334 ​ ​ 2,481 ​ ​ 5,815 ​ ​ — Residential mortgages ​ ​ 115 ​ ​ — ​ ​ 115 ​ ​ 335 Total loans ​ $ 3,449 $ 2,481 $ 5,930 $ 335 ​ The gross additional interest income that would have been earned during the three and six months ended June 30, 2020 had performing TDRs performed in accordance with the original terms is immaterial. Atlantic Capital recognized interest income on nonaccrual loans of $51,000 and $82,000 during the three and six months ended June 30, 2020. During the three and six months ended June 30, 2019, Atlantic Capital recognized interest income on nonaccrual loans totaling $105,000 and $168,000, respectively. ​ The following table presents the amortized cost basis of collateral dependent impaired loans by class of loans as of June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real ​ ​ ​ ​ ​ Business ​ ​ SBA ​ ​ ​ ​ ​ Property ​ Equipment ​ Assets ​ Guaranty-75% ​ Total Commercial loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 2,424 $ 544 $ 192 $ 1,476 $ 4,636 Commercial real estate ​ ​ 48 ​ ​ 109 ​ ​ — ​ ​ — ​ ​ 157 Total commercial loans ​ ​ 2,472 ​ ​ 653 ​ ​ 192 ​ ​ 1,476 ​ ​ 4,793 Residential mortgages ​ ​ 115 ​ ​ — ​ ​ — ​ ​ — ​ ​ 115 Total loans $ 2,587 $ 653 $ 192 $ 1,476 $ 4,908 ​ ​ Atlantic Capital monitors loans by past due status. The following table presents the aging of the recorded investment in past due loans as of June 30, 2020 and December 31, 2019 by class of loans. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, 2020 ​ ​ 30 - 59 ​ 60 - 89 ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ ​ ​ Total Past Due ​ Loans Not ​ ​ ​ Past Due Past Due Past Due Nonaccruing and Nonaccruing Past Due Total ​ (in thousands) Loans by Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ $ 828 ​ $ 284 ​ $ — ​ $ 5,658 ​ $ 6,770 ​ $ 967,048 ​ $ 973,818 Commercial real estate ​ — ​ ​ 364 ​ ​ — ​ ​ 157 ​ ​ 521 ​ 899,800 ​ 900,321 Construction and land ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ 128,991 ​ 128,991 Residential mortgages ​ 2,063 ​ ​ — ​ ​ 335 ​ ​ 115 ​ ​ 2,513 ​ 29,814 ​ 32,327 Home equity ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ 23,689 ​ 23,689 Consumer ​ 2,453 ​ ​ 923 ​ ​ — ​ ​ — ​ ​ 3,376 ​ 131,933 ​ 135,309 Total Loans ​ $ 5,344 ​ $ 1,571 ​ $ 335 ​ $ 5,930 ​ $ 13,180 ​ $ 2,181,275 ​ $ 2,194,455 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2019 ​ ​ 30 - 59 ​ 60 - 89 ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ ​ ​ Total Past Due ​ Loans Not ​ ​ ​ ​ Past Due Past Due Past Due Nonaccruing and Nonaccruing Past Due ​ Total ​ (in thousands) Loans by Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ $ 4,069 ​ $ 30 ​ $ — ​ $ 5,990 ​ $ 10,089 ​ $ 695,026 ​ $ 705,115 Commercial real estate ​ 1,194 ​ — ​ 85 ​ 262 ​ ​ 1,541 ​ 914,787 ​ ​ 916,328 Construction and land ​ — ​ — ​ — ​ — ​ ​ — ​ 127,540 ​ ​ 127,540 Residential mortgages ​ 707 ​ — ​ — ​ 256 ​ ​ 963 ​ 30,352 ​ ​ 31,315 Home equity ​ — ​ — ​ — ​ 700 ​ ​ 700 ​ 24,302 ​ ​ 25,002 Mortgage warehouse ​ — ​ — ​ — ​ — ​ ​ — ​ 13,941 ​ ​ 13,941 Consumer ​ 136 ​ — ​ — ​ — ​ ​ 136 ​ 57,181 ​ ​ 57,317 Total Loans ​ $ 6,106 ​ $ 30 ​ $ 85 ​ $ 7,208 ​ $ 13,429 ​ $ 1,863,129 ​ $ 1,876,558 ​ The following table presents loans purchased and/or sold during the three and six months ended June 30, 2020 by portfolio class: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, 2020 ​ ​ Commercial and ​ Commercial ​ Residential ​ ​ ​ Industrial Real Estate Mortgages Total ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Repurchases of SBA participations $ - $ - $ - $ - SBA Sales ​ ​ 10,205 ​ ​ 1,334 ​ ​ - ​ ​ 11,539 Total Loans ​ $ 10,205 ​ $ 1,334 ​ $ — ​ $ 11,539 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2020 ​ ​ Commercial and ​ Commercial ​ Residential ​ ​ ​ Industrial Real Estate Mortgages Total ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Repurchases of SBA participations $ - $ - $ - $ - SBA Sales ​ ​ 16,169 ​ ​ 1,492 ​ ​ 277 ​ ​ 17,938 Total Loans ​ $ 16,169 ​ $ 1,492 ​ $ 277 ​ $ 17,938 ​

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets
Goodwill and Intangible Assets	NOTE 7 – GOODWILL AND INTANGIBLE ASSETS Atlantic Capital tests goodwill for impairment annually in the fourth quarter. In assessing the possibility that the Company's fair value has been reduced below its carrying amount due to the occurrence of events or circumstances between annual impairment testing dates, Atlantic Capital considers all available evidence, including (i) downward revisions to internal forecasts or decreases in market multiples (and the magnitude thereof), if any, and (ii) declines in market capitalization below book value (and the magnitude and duration of those declines), if any. Atlantic Capital considered the declining market conditions generated by the COVID-19 pandemic during the first six months of 2020 and performed an interim impairment test as of May 31, 2020, which incorporated a combination of income and market valuation approaches and indicated that no impairment existed surrounding goodwill. Atlantic Capital continued to assess events and circumstances through the balance sheet date and through the date of the filing of this Quarterly Report on Form 10-Q that could potentially indicate goodwill impairment including analyzing the impacts from the COVID-19 pandemic. The Company conducted its annual impairment testing as of October 1, 2019, utilizing a qualitative assessment. Based on these assessments, management concluded that the 2019 annual qualitative impairment assessment indicated that it is more likely than not that the estimated fair value exceeded the carrying value (including goodwill). Therefore, a step one quantitative analysis was not required. The following table presents activity for goodwill and other intangible assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ For the Six Months Ended June 30, ​ Goodwill Core Deposit Intangible Total Goodwill Core Deposit Intangible Total ​ (in thousands) 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance, beginning of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925 Amortization ​ — ​ — ​ — ​ — ​ — ​ — Balance, end of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance, beginning of period $ 21,690 ​ $ 1,158 ​ $ 22,848 ​ $ 21,690 ​ $ 1,405 ​ $ 23,095 Amortization ​ — ​ — ​ — ​ — ​ (247) ​ (247) Impairment, due to Branch Sale ​ (1,765) ​ (1,158) ​ (2,923) ​ (1,765) ​ (1,158) ​ (2,923) Balance, end of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925 ​ On January 1, 2020, the Company adopted 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” This guidance simplified goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined. Now, entities must compare the fair value of a reporting unit to its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit’s fair value.

Servicing Assets

Servicing Assets	6 Months Ended
	Jun. 30, 2020
Servicing Assets
Servicing Assets	NOTE 8 – SERVICING ASSETS SBA Servicing Assets SBA servicing assets are initially recorded at fair value. Subsequently, Atlantic Capital accounts for SBA servicing assets using the amortization method and they are included in other intangibles, net on the Consolidated Balance Sheets. As of June 30, 2020 and December 31, 2019, the balance of SBA loans sold and serviced by Atlantic Capital totaled $181.5 million and $185.5 million, respectively. Changes in the balance of servicing assets for the three and six months ended June 30, 2020 and 2019 are presented in the following table . ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, SBA Loan Servicing Assets 2020 2019 2020 2019 ​ ​ (in thousands) ​ (in thousands) Beginning carrying value, net ​ $ 2,523 ​ $ 2,677 ​ $ 2,731 ​ $ 2,539 Additions ​ 197 ​ 327 ​ 302 ​ 625 Amortization ​ (217) ​ (278) ​ (530) ​ (438) Ending carrying value ​ $ 2,503 ​ $ 2,726 ​ $ 2,503 ​ $ 2,726 ​ At June 30, 2020 and December 31, 2019, the sensitivity of the fair value of the SBA loan servicing assets to immediate changes in key economic assumptions are presented in the table below . ​ ​ ​ ​ ​ ​ ​ ​ Sensitivity of the SBA Servicing Assets June 30, 2020 December 31, 2019 ​ ​ (dollars in thousands) Fair value of retained servicing assets ​ $ 2,654 ​ $ 2,842 ​ Weighted average life ​ 3.29 years ​ 3.77 years ​ Prepayment speed: ​ 17.49 % 14.87 % Decline in fair value due to a 10% adverse change ​ $ (97) ​ $ (150) ​ Decline in fair value due to a 20% adverse change ​ $ (202) ​ $ (254) ​ Weighted average discount rate ​ 12.78 % 13.66 % Decline in fair value due to a 100 bps adverse change ​ $ (39) ​ $ (98) ​ Decline in fair value due to a 200 bps adverse change ​ $ (93) ​ $ (156) ​ ​ The above sensitivities are hypothetical and should be used with caution. As the amounts indicate, changes in fair value based on valuation assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value of the retained interest is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another, which might magnify or counteract the sensitivities. TriNet Servicing Assets TriNet servicing rights are initially recorded at fair value. Subsequently, Atlantic Capital accounts for TriNet servicing rights using the amortization method and they are included in other intangibles, net. ​ Changes in the balance of TriNet servicing assets for the three and six months ended June 30, 2020 and 2019 are presented in the following table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ TriNet Servicing Assets 2020 2019 2020 2019 ​ ​ ​ (in thousands) ​ (in thousands) ​ Beginning carrying value, net ​ $ 262 ​ $ 406 ​ $ 296 ​ $ 444 ​ Amortization ​ (34) ​ (37) ​ (68) ​ (75) ​ Ending carrying value ​ $ 228 ​ $ 369 ​ $ 228 ​ $ 369 ​ ​ At June 30, 2020 and December 31, 2019, the sensitivity of the fair value of the TriNet servicing assets to immediate changes in key economic assumptions are presented in the table below . ​ ​ ​ ​ ​ ​ ​ ​ Sensitivity of the TriNet Servicing Assets June 30, 2020 December 31, 2019 ​ ​ (dollars in thousands) Fair value of retained servicing assets ​ $ 379 ​ $ 414 Weighted average life ​ 5.10 years ​ 5.58 years ​ Prepayment speed: ​ 5.00 % ​ 5.00 % Decline in fair value due to a 10% adverse change ​ $ (4) ​ $ (5) ​ Decline in fair value due to a 20% adverse change ​ $ (8) ​ $ (10) ​ Weighted average discount rate ​ 8.00 % 8.00 % Decline in fair value due to a 100 bps adverse change ​ $ (8) ​ $ (9) ​ Decline in fair value due to a 200 bps adverse change ​ $ (15) ​ $ (18) ​ ​ The above sensitivities are hypothetical and should be used with caution. As the amounts indicate, changes in fair value based on valuation assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value of the retained interest is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another, which might magnify or counteract the sensitivities.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)	​ ​ NOTE 9 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated other comprehensive income (loss) for Atlantic Capital consists of changes in net unrealized gains and losses on investment securities available-for-sale and derivatives. The following tables present a summary of the changes in accumulated other comprehensive income (loss) balances for the applicable periods. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended ​ ​ June 30, 2020 ​ June 30, 2020 ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Amount Benefit Amount Amount Benefit Amount ​ ​ (in thousands) Accumulated other comprehensive income (loss) beginning of period ​ $ 19,057 ​ $ (4,711) ​ $ 14,346 ​ $ 6,081 ​ $ (1,520) ​ $ 4,561 Unrealized net gains (losses) on investment securities available-for-sale ​ ​ 1,331 ​ (329) ​ 1,002 ​ ​ 5,726 ​ (1,407) ​ 4,319 Unrealized net gains (losses) on derivatives ​ ​ 720 ​ (178) ​ 542 ​ ​ 9,301 ​ (2,291) ​ 7,010 Accumulated other comprehensive income (loss) end of period ​ $ 21,108 ​ $ (5,218) ​ $ 15,890 ​ $ 21,108 ​ $ (5,218) ​ $ 15,890 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended ​ ​ June 30, 2019 ​ June 30, 2019 ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Amount Benefit Amount Amount Benefit Amount ​ ​ (in thousands) Accumulated other comprehensive income (loss) beginning of period ​ $ (3,882) ​ $ 972 ​ $ (2,910) ​ $ (13,743) ​ $ 3,438 ​ $ (10,305) Unrealized net gains (losses) on investment securities available-for-sale ​ ​ 6,090 ​ (1,524) ​ 4,566 ​ ​ 14,562 ​ (3,642) ​ 10,920 Reclassification adjustment for net realized losses on investment securities available-for-sale ​ ​ (654) ​ 164 ​ (490) ​ ​ (654) ​ 164 ​ (490) Unrealized net gains (losses) on derivatives ​ ​ 3,220 ​ (805) ​ 2,415 ​ ​ 4,609 ​ (1,153) ​ 3,456 Accumulated other comprehensive income (loss) end of period ​ $ 4,774 ​ $ (1,193) ​ $ 3,581 ​ $ 4,774 ​ $ (1,193) ​ $ 3,581 ​

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2020
Earnings Per Common Share
Earnings Per Common Share	NOTE 10 – EARNINGS PER COMMON SHARE Basic earnings per share amounts are computed by dividing net income by the weighted average number of shares of common stock outstanding. Diluted earnings per share amounts are computed by dividing net income by the weighted average number of shares of common stock outstanding and the dilutive effects of the shares awarded under the stock option plan, based on the treasury stock method using an average fair market value of the stock during the respective periods. The following table represents the earnings per share calculations for the three and six months ended June 30, 2020 and 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 2020 2019 ​ (in thousands, except share and per share amounts) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income from continuing operations ​ $ 1,849 ​ $ 7,009 ​ $ 3,973 ​ $ 13,449 ​ Net income from discontinued operations ​ — ​ 22,143 ​ — ​ 21,080 ​ Net income available to common shareholders ​ $ 1,849 ​ $ 29,152 ​ $ 3,973 ​ $ 34,529 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares outstanding ​ ​ ​ ​ ​ Basic (1) ​ 21,472,462 ​ 23,888,381 ​ 21,580,855 ​ 24,369,106 ​ Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock options and performance share awards ​ 62,578 ​ 152,425 ​ 107,857 ​ 158,286 ​ Diluted ​ 21,535,040 ​ 24,040,806 ​ 21,688,712 ​ 24,527,392 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income per common share - basic ​ ​ ​ ​ ​ Net income per common share - continuing operations ​ $ 0.09 ​ $ 0.29 ​ $ 0.18 ​ $ 0.55 ​ Net income per common share - discontinued operations ​ — ​ 0.93 ​ — ​ 0.87 ​ Net income per common share - basic ​ $ 0.09 ​ $ 1.22 ​ $ 0.18 ​ $ 1.42 ​ Net income per common share - diluted ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income per common share - continuing operations ​ $ 0.09 ​ $ 0.29 ​ $ 0.18 ​ $ 0.55 ​ Net income per common share - discontinued operations ​ — ​ 0.92 ​ — ​ 0.86 ​ Net income per common share - diluted ​ $ 0.09 ​ $ 1.21 ​ $ 0.18 ​ $ 1.41 ​ (1) Unvested restricted shares are participating securities and included in basic share calculations. ​ Stock options outstanding of 109,446 at June 30, 2020 and 150 at June 30, 2019 have not been included in diluted earnings per share because to do so would have been anti-dilutive for the periods presented. These awards were considered anti-dilutive because the exercise price of the award was higher than the market value of the shares. The Amended and Restated Articles of Incorporation of Atlantic Capital authorize Atlantic Capital to issue 110,000,000 shares of capital stock, of which 10,000,000 shares are designated as preferred stock, no par value per share, and 100,000,000 shares are designated as common stock, no par value per share. Atlantic Capital had 21,477,631 shares of common stock issued and outstanding at June 30, 2020. At December 31, 2019, 21,751,026 shares of common stock were issued and outstanding ​ The primary source of funds available to Atlantic Capital is payments of dividends from the Bank. No dividends were paid by the Bank to Atlantic Capital during the three months ended June 30, 2020. For the six months ended June 30, 2020, the Bank paid dividends totaling $12.5 million. For the three and six months ended June 30, 2019, the Bank paid dividends totaling $26.5 million to Atlantic Capital. Banking laws and other regulations limit the amount of dividends a bank subsidiary may pay without prior regulatory approval. Additionally, Atlantic Capital’s ability to pay dividends to its shareholders will depend on the ability of the Bank to pay dividends to Atlantic Capital. The Bank is subject to regulatory restrictions on the payment of cash dividends, which generally may be paid only from current earnings. During the first quarter of 2020, the Company completed the $85.0 million stock repurchase program authorized by the Board of Directors on November 14, 2018. On March 4, 2020, the Board of Directors authorized a new stock repurchase program pursuant to which the Company may purchase up to $25 million of its issued and outstanding common stock. The repurchase program commenced immediately with respect to $15 million of stock, and the remaining $10 million is subject to regulatory approval of a dividend from the Bank to Atlantic Capital. The timing and amounts of any repurchases will depend on certain factors, including but not limited to market conditions and prices, available funds and alternative uses of capital. The stock repurchase program may be carried out through open-market purchases, block trades, negotiated private transactions and pursuant to a trading plan that will be adopted in accordance with Rule 10b-18 or Rule 10b5-1 under the Securities Exchange Act of 1934. Any repurchased shares will constitute authorized but unissued shares. During the first six months of 2020, the Company repurchased 418,858 shares totaling $7.4 million, of which 114,592 shares totaling $1.6 million were purchased under the new stock buyback program with the remaining shares purchased under the previous program. The Company paused repurchases in March 2020 as part of its holding company liquidity planning in response to the COVID-19 pandemic.

Derivatives and Hedging

Derivatives and Hedging	6 Months Ended
	Jun. 30, 2020
Derivatives and Hedging
Derivatives and Hedging	NOTE 11 – DERIVATIVES AND HEDGING Risk Management Atlantic Capital’s objectives in using interest rate derivatives are to stabilize net interest revenue and to manage its exposure to interest rate movements. To accomplish these objectives, Atlantic Capital primarily uses interest rate swaps as part of its interest rate risk management strategy. Cash Flow Hedges At June 30, 2020, Atlantic Capital’s interest rate swaps designated as cash flow hedges involve the payment of floating-rate amounts to a counterparty in exchange for receiving fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. At June 30, 2020 and December 31, 2019, Atlantic Capital had interest rate swaps designated as cash flow hedges with aggregate notional amounts of $125.0 million and $175.0 million, respectively. No hedge ineffectiveness gains or losses were recognized on active cash flow hedges for the three and six months ended June 30, 2020 and 2019. 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 and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. Atlantic Capital expects that approximately $1.7 million will be reclassified as an increase to loan interest income over the next twelve months related to these cash flow hedges. Customer Swaps Atlantic Capital also enters into derivative contracts, which consist of interest rate swaps, to facilitate the needs of customers desiring to manage interest rate risk. These swaps are not designated as accounting hedges under ASC 815, Derivatives and Hedging Atlantic Capital’s derivative instruments are recorded at fair value in other assets and accrued interest receivable and other liabilities and accrued interest payable in the Consolidated Balance Sheets. The changes in the fair value of the derivative instruments are recognized in derivatives income in the Consolidated Statements of Income. At June 30, 2020 and December 31, 2019, Atlantic Capital had interest rate swaps related to this program with an aggregate notional amount of $71.7 million and $89.5 million, respectively. Atlantic Capital acquired a loan level hedging program, which First Security utilized to accommodate clients preferring a fixed rate loan. The loan documents include an addendum with a zero premium collar. The zero premium collar is a cap and a floor at the same interest rate, resulting in a fixed rate to the borrower. To hedge this embedded option, First Security entered into a dealer facing trade exactly mirroring the terms in the loan addendum. At June 30, 2020 and December 31, 2019, Atlantic Capital had interest rate swaps related to this program with an aggregate notional amount of $146.5 million and $149.1 million, respectively. Counterparty Credit Risk As a result of its derivative contracts, Atlantic Capital is exposed to credit risk. Specifically approved counterparties and exposure limits are defined. Quarterly, the customer derivative contracts and related counterparties are evaluated for credit risk and an adjustment is made to the contract’s fair value. This adjustment is recognized in the Consolidated Statements of Income. In accordance with the interest rate agreements with derivatives dealers, Atlantic Capital may be required to post margin to these counterparties. At June 30, 2020 and December 31, 2019, Atlantic Capital had minimum collateral posting thresholds with certain of its derivative counterparties and posted collateral of $13.9 million and $13.6 million, respectively, against its obligations under these agreements. Cash collateral related to derivative contracts is recorded in other assets in the Consolidated Balance Sheets. Atlantic Capital has master netting agreements with the derivatives dealers with which it does business, but reflects gross assets and liabilities on the Consolidated Balance Sheets. In conjunction with the FASB’s fair value measurement guidance, management made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting arrangements on a net basis. To accommodate clients, Atlantic Capital occasionally enters into credit risk participation agreements with counterparty banks to accept a portion of the credit risk related to interest rate swaps. This allows clients to execute an interest rate swap with one bank while allowing for distribution of the credit risk among participating members. Credit risk participation agreements arise when Atlantic Capital contracts with other financial institutions, as a guarantor, to share credit risk associated with certain interest rate swaps. These agreements provide for reimbursement of losses resulting from a third party default on the underlying swap. At June 30, 2020 and December 31, 2019, Atlantic Capital had credit risk participation agreements with a notional amount of $6.7 million and $7.7 million, respectively. The following table reflects the estimated fair value positions of derivative contracts and credit risk participation agreements as of June 30, 2020 and December 31, 2019: Derivatives designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (in thousands) Balance Sheet Notional ​ ​ Notional ​ ​ Interest Rate Products ​ Location ​ Amount ​ Fair Value ​ Amount ​ Fair Value Cash flow hedge of LIBOR based loans Other assets ​ $ 125,000 ​ $ 12,790 ​ $ 125,000 ​ $ 3,578 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedge of LIBOR based loans Other liabilities ​ $ — ​ $ — ​ $ 50,000 ​ $ 8 ​ Derivatives not designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (in thousands) ​ Balance Sheet ​ Notional ​ ​ ​ Notional ​ ​ Interest Rate Products Location Amount Fair Value Amount Fair Value Customer swap positions ​ Other assets ​ $ 35,861 ​ $ 2,366 ​ $ 44,763 ​ $ 1,025 Zero premium collar ​ Other assets ​ 73,265 ​ 10,521 ​ 74,562 ​ 4,253 ​ ​ ​ ​ $ 109,126 ​ $ 12,887 ​ $ 119,325 ​ $ 5,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Dealer offsets to customer swap positions ​ Other liabilities ​ $ 35,861 ​ $ 2,400 ​ $ 44,763 ​ $ 1,090 Dealer offset to zero premium collar ​ Other liabilities ​ 73,265 ​ 10,601 ​ 74,562 ​ 4,545 Credit risk participation ​ Other liabilities ​ 6,719 ​ 11 ​ 7,657 ​ 4 ​ ​ ​ ​ $ 115,845 ​ $ 13,012 ​ $ 126,982 ​ $ 5,639 ​ The following table presents the effect of the Company’s derivative financial instruments that are not designated as hedging instruments on the Consolidated Statements of Income for the three and six months ended June 30, 2020 and 2019. Derivatives not designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Location of Gain or Amount of Gain or (Loss) ​ Amount of Gain or (Loss) ​ ​ (Loss) Recognized in Recognized in Income on Derivative ​ Recognized in Income on Derivative (in thousands) Income on Derivative Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ 2020 2019 2020 2019 Interest rate products Other income $ 12 ​ $ (231) ​ $ (242) ​ $ (341) Other contracts Other income ​ (2) ​ (2) ​ 6 ​ (3) Total ​ ​ $ 10 ​ $ (233) ​ $ (236) ​ $ (344) ​ The following table reflects the impact to the Consolidated Statements of Income related to derivative contracts for the three and six months ended June 30, 2020 and 2019: Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ Amount of Gain or ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of Gain or ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) Recognized in ​ Gain or (Loss) Reclassified from ​ (Loss) Recognized in ​ Gain or (Loss) Reclassified from ​ ​ ​ OCI on Derivatives ​ Accumulated OCI in Income ​ OCI on Derivatives ​ Accumulated OCI in Income ​ ​ ​ (Effective Portion) ​ (Effective Portion) ​ (Effective Portion) ​ (Effective Portion) ​ (in thousands) ​ 2020 ​ 2019 ​ Location ​ 2020 ​ 2019 ​ 2020 ​ 2019 ​ Location ​ 2020 ​ 2019 ​ Interest rate swaps $ 3,669 $ 1,823 Interest income $ (510) $ (8) $ 9,268 $ 3,091 Interest income $ (652) $ (129) ​

Other Borrowings and Long Term

Other Borrowings and Long Term Debt	6 Months Ended
	Jun. 30, 2020
Other Borrowings and Long Term Debt
Other Borrowings and Long Term Debt	NOTE 12 – OTHER BORROWINGS AND LONG TERM DEBT Federal Home Loan Bank borrowings as of June 30, 2020 and December 31, 2019 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ Balance Interest Rate Balance Interest Rate ​ ​ (in thousands) FHLB short-term borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed rate advance maturing July 14, 2020 ​ $ 50,000 ​ 0.27 % ​ $ — ​ — % Total ​ $ 50,000 ​ ​ ​ $ — ​ ​ ​ Interest expense for FHLB borrowings totaled $38,000 for the three and six months ended June 30, 2020. Interest expense for FHLB borrowings for the three and six months ended June 30, 2019 was $270,000. At June 30, 2020, the Company had available line of credit commitments with the FHLB totaling $815.8 million, with $50.0 million outstanding FHLB advances. However, based on actual collateral pledged, $140.2 million was available. At June 30, 2020, the Company had an available line of credit based on the collateral available of $218.7 million with the Federal Reserve Bank of Atlanta (“FRB”). Interest expense on federal funds purchased for the three and six months ended June 30, 2020 totaled $6,000 and $38,000, respectively, and $168,000 and $286,000, for the three and six months ended June 30, 2019, respectively. On September 28, 2015, Atlantic Capital issued subordinated notes (the “Notes”) totaling $50.0 million in aggregate principal amount and callable at par on September 30, 2020. The Notes are due September 30, 2025 and bear a fixed rate of interest of 6.25% per year until September 29, 2020. From September 30, 2020 to the maturity date, the interest rate will be a floating rate equal to the three-month LIBOR plus 468 basis points. The Notes were priced at 100% of their par value and qualify as Tier 2 regulatory capital. Subordinated debt is summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Floating rate 10 year capital securities, with interest paid semi-annually at an annual fixed rate of 6.25% until September 30, 2020 ​ $ 50,000 ​ $ 50,000 Principal amount of subordinated debt ​ $ 50,000 ​ $ 50,000 Less debt issuance costs ​ 42 ​ 127 Subordinated debt, net ​ $ 49,958 ​ $ 49,873 ​ All subordinated debt outstanding at June 30, 2020 matures after more than five years.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2020
Share-Based Compensation
Share-Based Compensation	NOTE 13 – SHARE-BASED COMPENSATION Atlantic Capital sponsors a stock incentive plan for the benefit of directors and employees. Under the Company’s 2015 Stock Incentive Plan (as amended and restated effective May 16, 2018), there were approximately 4,525,000 shares reserved for issuance to directors, employees, and independent contractors of Atlantic Capital and its affiliates. The Compensation Committee has the authority to grant the following: an incentive or nonqualified option; a stock appreciation right (“SAR”), which includes a related SAR or a freestanding SAR; a restricted award (including a restricted stock award or a restricted stock unit award); a performance award (including a performance share award or a performance unit award); a phantom stock award; an other stock-based award; a cash bonus award; a dividend equivalent award; or any other award granted under the plan ​ At June 30, 2020, approximately 3,111,000 additional awards could be granted under the plan. Through June 30, 2020, incentive stock options, nonqualified stock options, restricted stock awards, performance share awards, and other stock-based awards have been granted under the plan. Stock options are granted at a price which is no less than the fair market value of a share of Atlantic Capital common stock on the grant date. Stock options generally vest over three years and expire after ten years . ​ The Company accounts for stock options in accordance with FASB ASC 718, Stock Compensation , which requires the Company to recognize the costs of its employee stock option awards in its Consolidated Statements of Operations. According to ASC 718, the total cost of the Company’s share-based awards is equal to their grant date fair value and is recognized as expense on a straight-line basis over the vesting period of the awards. Total stock-based compensation expense recognized by the Company for the three and six months ended June 30, 2020 for stock option grants was $17,000 and $35,000 , respectively, and $52,000 and $133,000 for the three and six months ended June 30, 2019, respectively. Unrecognized stock-based compensation expense related to stock option grants at June 30, 2020 and 2019 was $24,000 and $95,000 , respectively. At June 30, 2020 and 2019, the weighted average period over which this unrecognized expense is expected to be recognized was 0.3 years and 1. years, respectively. The weighted average remaining contractual life of options outstanding at June 30, 2020 was 2.1 years. ​ The Company estimates the fair value of its options awards using the Black-Scholes option pricing model. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The table below summarizes the assumptions used to calculate the fair value of options granted/modified during the six months ended June 30, 2019. No stock options were granted/modified during the six months ended June 30, 2020. ​ ​ ​ ​ ​ ​ For the six months ended ​ ​ June 30, 2019 Risk‑free interest rate 2.27 % Expected term in years 1.73-1.82 Expected stock price volatility 26.8 % Dividend yield — % ​ The following table represents stock option activity for the six months ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Remaining ​ Aggregate ​ ​ ​ ​ ​ Average ​ Contractual Term ​ Intrinsic Value ​ Shares Exercise Price (in years) (in thousands) Outstanding, December 31, 2019 ​ ​ 318,980 ​ $ 11.47 ​ ​ ​ Granted/modified (1) ​ ​ — ​ ​ — ​ ​ ​ Exercised ​ ​ (60,940) ​ ​ 10.82 ​ ​ ​ Forfeited (1) ​ — ​ — ​ Expired ​ (94) ​ 102.12 ​ Outstanding, June 30, 2020 ​ 257,946 ​ $ 11.59 2.06 ​ $ 284 Exercisable, June 30, 2020 ​ 247,946 ​ $ 11.45 1.93 ​ $ 284 (1) During the six months ended June 30, 2020, the Company did not modify any options. ​ The total fair value of option shares vested for the six months ended June 30, 2020 and 2019 was $0 and $137,000 , respectively. ​ In 2019 and 2020, the Company granted performance share awards under Atlantic Capital’s 2015 Stock Incentive Plan to members of executive management to evidence awards granted under the Long Term Incentive Plan. The Company also granted restricted stock awards to certain employees in 2019 and 2020 under the 2015 Stock Incentive Plan. Compensation expense for restricted stock is based on the fair value of restricted stock awards at the time of grant, which is equal to the value of Atlantic Capital’s common stock on the date of grant. Compensation expense for performance share awards are based on the fair value of Atlantic Capital’s stock at the grant date adjusted for market conditions, as well as the subsequent achievement of performance conditions over the vesting period. The value of restricted stock awards and performance share awards that are expected to vest is amortized into expense over the vesting period. Restricted stock awards may cliff vest over 1 - 3 years or vest on a pro-rata basis, generally over 3 years . The market value at the date of award is amortized by charges to compensation expense over the vesting period. ​ Compensation expense related to restricted stock and performance shares for the three and six months ended June 30, 2020 was $632,000 and $1.0 million, respectively, and $216,000 and $707,000 for the three and six months ended June 30, 2019, respectively. Unrecognized compensation expense associated with restricted stock was $2.9 million as of June 30, 2020 and $2.4 million as of June 30, 2019. At June 30, 2020 and June 30, 2019, the weighted average period over which this unrecognized expense is to be recognized was 2.17 years and 2.17 years, respectively. During the three and six months ended June 30, 2020, there were 18,717 and 142,550 restricted stock and performance share awards granted at a weighted average grant price of $11.38 and $18.13 per share, respectively. During the three and six months ended June 30, 2019, there were 25,743 and 130,093 restricted stock and performance share awards granted at a weighted average grant price of $17.54 and $19.54 per share, respectively. ​ The Company did not modify any options during the six months ended June 30, 2020. During the six months ended June 30, 2019, the Company modified options for 12,500 shares and 4,719 restricted stock awards to two individuals. The modifications allowed for the immediate vesting of the awards upon termination of service. The total incremental cost resulting from the modifications was $31,000 for the six months ended June 30, 2019. ​ The following table represents restricted stock and performance share award activity for the six months ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average Grant- ​ Shares Date Fair Value Outstanding, December 31, 2019 ​ 292,877 ​ $ 19.00 Granted/modified (1) ​ 142,550 ​ 18.13 Vested ​ (98,991) ​ 17.60 Forfeited ​ (5,661) ​ 18.67 Outstanding, June 30, 2020 ​ 330,775 ​ $ 19.05 ​ (1) During the six months ended June 30, 2020, the Company did not modify any restricted stock awards.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2020
Fair Value Measurements
Fair Value Measurements	​ NOTE 14 – FAIR VALUE MEASUREMENTS Atlantic Capital follows the guidance pursuant to ASC 820-10, Fair Value Measurements and Disclosures The guidance emphasizes that fair value is a market-based measurement, not an entity-specific measurement and defines fair value as the price that could be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, this guidance 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 (unobservable inputs classified within Level 3 of the hierarchy). Atlantic Capital applied the following fair value hierarchy: Level 1 – Assets or liabilities for which the identical item is traded on an active exchange, such as publicly-traded instruments or futures contracts. Level 2 – Assets or liabilities valued based on observable market data for similar instruments. Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market, instruments valued based on the best available data, some of which is internally-developed, and risk premiums that a market participant would require. 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 which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement. There were no transfers between Level 1 and Level 2 or Level 2 and Level 3 during the three or six months ended June 30, 2020 and 2019. Atlantic Capital records investment securities available-for-sale at fair value on a recurring basis. Investment securities classified as available-for-sale are reported at fair value utilizing Level 2 inputs. For these securities, Atlantic Capital obtains fair value measurements from an independent pricing service. In estimating the fair values for investment securities, Atlantic Capital believes that independent third-party market prices are the best evidence of an exit price. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the Treasury Department yield curve, trade execution data, market consensus prepayment speeds, credit information and the securities’ terms and conditions, among other things. Derivative instruments are primarily transacted as over-the-counter trades and priced with observable market assumptions. Ongoing measurements include observable market assumptions with appropriate valuation adjustments for liquidity and for credit risk of counterparties and Atlantic Capital’s own credit. For these instruments, Atlantic Capital obtains fair value measurements from an independent pricing service. The fair value measurements consider factors such as the likelihood of default by Atlantic Capital and its counterparties, total exposure and remaining maturities in determining the appropriate fair value adjustments to record. Generally, the expected loss of each client counterparty is estimated using Atlantic Capital’s internal risk rating system. For financial institution counterparties that are rated by national rating agencies, those ratings are used in determining the credit risk. This approach used to estimate exposures to counterparties is also used by Atlantic Capital to estimate its own credit risk on derivative liability positions. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents the assets that were measured at fair value on a recurring basis by level within the fair value hierarchy as reported in the Consolidated Balance Sheets at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at June 30, 2020 Using: ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Securities ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total ​ ​ (in thousands) Securities available-for-sale: ​ ​ ​ ​ U.S. states and political subdivisions ​ $ — ​ $ 83,142 ​ $ — ​ $ 83,142 Trust preferred securities ​ — ​ 4,375 ​ — ​ 4,375 Corporate debt securities ​ — ​ 19,683 ​ — ​ 19,683 Mortgage-backed securities ​ — ​ 164,629 ​ — ​ 164,629 Total securities available-for-sale ​ $ — ​ $ 271,829 ​ $ — ​ $ 271,829 Interest rate derivative assets ​ $ — ​ $ 25,677 ​ $ — ​ $ 25,677 Interest rate derivative liabilities ​ $ — ​ $ 13,012 ​ $ — ​ $ 13,012 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2019 Using: ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Securities ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Totals ​ ​ (in thousands) Securities available-for-sale: ​ ​ ​ ​ U.S. states and political subdivisions ​ $ — ​ $ 82,485 ​ $ — ​ $ 82,485 Trust preferred securities ​ — ​ 4,688 ​ — ​ 4,688 Corporate debt securities ​ — ​ 19,920 ​ — ​ 19,920 Mortgage-backed securities ​ — ​ 175,368 ​ — ​ 175,368 Total securities available-for-sale ​ $ — ​ $ 282,461 ​ $ — ​ $ 282,461 Interest rate derivative assets ​ $ — ​ $ 8,856 ​ $ — ​ $ 8,856 Interest rate derivative liabilities ​ $ — ​ $ 5,647 ​ $ — ​ $ 5,647 ​ For the six months ended June 30, 2020 and twelve months ended December 31, 2019, there was no change in the methods and significant assumptions used to estimate fair value. Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis The following table presents the assets that were measured at fair value on a nonrecurring basis by level within the fair value hierarchy as reported in the Consolidated Balance Sheets at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 ​ ​ ​ ​ Fair Value ​ Fair Value ​ Fair Value ​ ​ ​ June 30, 2020 ​ Measurement ​ Measurement ​ Measurement ​ Total ​ ​ (in thousands) Impaired Loans ​ $ — ​ $ — ​ $ 4,680 ​ $ 4,680 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 ​ ​ ​ ​ Fair Value ​ Fair Value ​ Fair Value ​ ​ ​ December 31, 2019 ​ Measurement ​ Measurement ​ Measurement ​ Total ​ ​ (in thousands) Impaired Loans ​ $ — ​ $ — ​ $ 4,288 ​ $ 4,288 ​ Level 3 loans consist of impaired loans which have been partially charged-off or have specific valuation allowances. The fair value of Level 3 assets is estimated based on the underlying collateral value. For loans which the cash proceeds from the sale of the underlying collateral is the expected source of repayment, the fair value of these loans was derived from internal estimates of the underlying collateral incorporating market data, including third party appraisals or evaluations, when available. Appraised values may be discounted based on management’s assessment of the level of inactivity in the real estate market and other markets for the underlying collateral, changes in market conditions from the time of the valuation, and other information that in management’s judgment may affect the value. Impaired loans are evaluated on at least a quarterly basis and adjusted accordingly. Assets and Liabilities Not Measured at Fair Value For financial instruments that have quoted market prices, those quotes are used to determine fair value. Financial instruments that have no defined maturity, have a remaining maturity of 180 days or less, or reprice frequently to a market rate, are assumed to have a fair value that approximates the reported book value, after taking into consideration any applicable credit risk. If no market quotes are available, financial instruments are valued by discounting the expected cash flows using an estimated current market interest rate for the financial instrument. For loans held for investment, fair value is measured using the exit price notion. For off-balance sheet derivative instruments, fair value is estimated as the amount that Atlantic Capital would receive or pay to terminate the contracts at the reporting date, taking into account the current unrealized gains or losses on open contracts. The short maturity of Atlantic Capital’s assets and liabilities results in having a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest-bearing deposits in other banks, other short-term investments, Federal Reserve Bank stock, and FHLB stock. The fair value of securities equals quoted market prices, if available. If a quoted market price is not available, fair value is estimated used quoted market prices for similar securities or dealer quotes. Due to the short-term settlement of accrued interest receivable and payable, the carrying amount closely approximates fair value. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect the premium or discount on any particular financial instrument that could result from the sale of Atlantic Capital’s entire holdings. Because no ready market exists for a significant portion of Atlantic Capital’s financial instruments, fair value estimates are based on many judgments. These estimates are subjective in nature, involve uncertainties and matters of significant judgment, and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Off-balance sheet financial instruments (commitments to extend credit and standby letters of credit) are generally short-term and at variable rates. Therefore, both the carrying amount and the estimated fair value associated with these instruments are immaterial. The following table presents the estimated fair values of Atlantic Capital’s financial instruments at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ June 30, 2020 Using: ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ Carrying ​ Securities ​ Inputs ​ Inputs ​ ​ Amount ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ ​ (in thousands) Financial assets: ​ ​ ​ ​ Cash and due from banks ​ $ 33,759 ​ $ 33,759 ​ $ — ​ $ — Interest-bearing deposits in banks ​ 33,038 ​ 33,038 ​ — ​ — Total securities available-for-sale ​ 271,829 ​ — ​ 271,829 ​ — Total securities held-to-maturity ​ ​ 185,920 ​ ​ — ​ ​ 194,662 ​ ​ — FHLB stock ​ 4,744 ​ — ​ — ​ 4,744 Federal Reserve Bank stock ​ 10,029 ​ — ​ — ​ 10,029 Loans held for investment, net ​ 2,184,694 ​ — ​ — ​ 2,211,005 Derivative assets ​ 25,677 ​ — ​ 25,677 ​ — Financial liabilities: ​ ​ ​ ​ Deposits ​ $ 2,407,631 ​ $ — ​ $ 2,373,838 ​ $ — Federal funds purchased ​ 6,000 ​ 6,000 ​ — ​ — Subordinated debt ​ 49,958 ​ — ​ 50,153 ​ — FHLB advances ​ 50,000 ​ — ​ 50,004 ​ — Derivative financial instruments ​ 13,012 ​ — ​ 13,012 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ December 31, 2019 Using: ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ Carrying ​ Securities ​ Inputs ​ Inputs ​ ​ Amount ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ ​ (in thousands) Financial assets: ​ ​ ​ ​ Cash and due from banks ​ $ 45,249 ​ $ 45,249 ​ $ — ​ $ — Interest-bearing deposits in banks ​ ​ 421,079 ​ ​ 421,079 ​ — ​ — Total securities available-for-sale ​ ​ 282,461 ​ ​ — ​ 282,461 ​ — Total securities held-to-maturity ​ ​ 116,972 ​ ​ — ​ ​ 115,291 ​ ​ — FHLB stock ​ ​ 2,680 ​ ​ — ​ — ​ 2,680 Federal Reserve Bank stock ​ ​ 9,998 ​ ​ — ​ — ​ 9,998 Loans held for investment, net ​ ​ 1,873,524 ​ ​ — ​ — ​ 1,890,258 Loans held for sale ​ ​ 370 ​ ​ — ​ 370 ​ — Derivative assets ​ ​ 8,856 ​ ​ — ​ 8,856 ​ — Financial liabilities: ​ ​ ​ ​ ​ ​ ​ Deposits ​ $ 2,499,046 ​ $ — ​ $ 2,421,957 ​ $ — Subordinated debt ​ ​ 49,873 ​ ​ — ​ 50,081 ​ — Derivative financial instruments ​ ​ 5,647 ​ ​ — ​ 5,647 ​ — ​

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies
Commitments and Contingencies	NOTE 15 – COMMITMENTS AND CONTINGENCIES Atlantic Capital is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and letters of credit, most of which are standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amounts recognized in the Consolidated Balance Sheets. The contract amounts of these instruments reflect the extent of involvement Atlantic Capital has in particular classes of financial instruments. Standby letters of credit are written conditional commitments issued by Atlantic Capital to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. Most letters of credit expire in less than one year. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Atlantic Capital’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. Atlantic Capital uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Atlantic Capital’s maximum exposure to credit risk for unfunded loan commitments and standby letters of credit at June 30, 2020 and December 31, 2019 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Financial Instruments whose contract amount represents credit risk: ​ ​ Commitments to extend credit ​ $ 739,648 ​ $ 735,905 Standby letters of credit ​ 9,973 ​ 8,053 ​ ​ $ 749,621 ​ $ 743,958 ​ ​ ​ ​ ​ ​ ​ Minimum lease payments ​ $ 18,993 ​ $ 20,055 ​ The Company also had commitments related to investments in SBICs totaling $2.0 million and $2.4 million at June 30, 2020 and December 31, 2019, respectively. From time to time, Atlantic Capital, in the normal course of business, is subject to various pending and threatened lawsuits in which claims for monetary damages are asserted. Although it is not possible to predict the outcome of these lawsuits, or the range of any possible loss, management, after consultation with legal counsel, does not anticipate that the ultimate aggregate liability, if any, arising from these lawsuits will have a material adverse effect on Atlantic Capital’s financial position or results of operations.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2020
Revenue Recognition
Revenue Recognition	NOTE 16 – REVENUE RECOGNITION Service Charges on Deposit Accounts Service charges represent general service fees for monthly account maintenance and activity, or transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed, such as a wire transfer or ATM withdrawal. Payment for such performance obligations are generally received at the time the performance obligations are satisfied. The following table presents service charges by type of service provided for the three and six months ended June 30, 2020 and 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ For the Six Months Ended June 30, ​ ​ 2020 2019 2020 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ Deposit account analysis fees and charges ​ $ 997 ​ $ 676 ​ $ 1,931 ​ $ 1,222 ​ ATM fees ​ 16 ​ (8) ​ 36 ​ 39 ​ NSF fees ​ 7 ​ 8 ​ 25 ​ 22 ​ Wire fees ​ 15 ​ 102 ​ 148 ​ 212 ​ Foreign exchange fees ​ 43 ​ 92 ​ 169 ​ 165 ​ Other ​ 3 ​ — ​ 4 ​ 4 ​ Total service charges - continuing operations ​ 1,081 ​ 870 ​ 2,313 ​ 1,664 ​ Service charges - discontinued operations ​ — ​ 46 ​ — ​ 527 ​ Total service charges ​ $ 1,081 ​ $ 916 ​ $ 2,313 ​ $ 2,191 ​ ​ Contract Balances A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of June 30, 2020 and December 31, 2019, the Company did not have any significant contract balances.

Leases

Leases	6 Months Ended
	Jun. 30, 2020
Leases
Leases	NOTE 17 – LEASES A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. On January 1, 2019, the Company adopted ASU No. 2016-02 “Leases” (Topic 842) Operating leases in which the Company is the lessee are recorded as operating lease ROU assets and operating lease liabilities, included in premises and equipment and other liabilities, respectively, on the Consolidated Balance Sheets. The Company does not currently have any significant finance leases in which it is the lessee. Operating lease ROU assets represent the Company’s right to use an underlying asset during the lease term and operating lease liabilities represent its obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents the Company’s incremental borrowing rate at the lease commencement date. ROU assets are further adjusted for lease incentives. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term, and is recorded in net occupancy expense in the Consolidated Statements of Income. The Company’s leases relate primarily to office space and bank branches with remaining lease terms of generally 1 to 12 years. Certain lease arrangements contain extension options which typically range from 5 to 10 years at the then fair market rental rates. As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term. Portions of certain properties are subleased for terms extending through 2024. As of June 30, 2020, operating lease ROU assets and liabilities were $10.8 million and $15.8 million, respectively, compared to $11.9 million and $16.9 million, respectively, as of December 31, 2019. The Company elected not to include short-term leases (i.e., leases with initial terms of twelve months or less) on the Consolidated Balance Sheets. Additionally, the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component. Rent expense for the three and six months ended June 30, 2020 was $598,000 and $1.2 million, respectively. For the three and six months ended June 30, 2019, rent expense was $473,000 and $1.2 million, respectively, which was included in occupancy expense in the Consolidated Statements of Income. The table below summarizes the Company’s net lease cost: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ June 30, June 30, ​ 2020 2019 ​ 2020 2019 ​ ​ (in thousands) Operating lease cost ​ $ 592 ​ $ 461 ​ $ 1,186 ​ $ 1,126 Short-term lease cost ​ ​ 6 ​ 12 ​ ​ 15 ​ 26 Sublease income ​ ​ (92) ​ (42) ​ ​ (182) ​ (116) Net lease cost ​ $ 506 ​ $ 431 ​ $ 1,019 ​ $ 1,036 ​ The tables below summarize other information related to the Company’s operating leases: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ June 30, June 30, ​ 2020 2019 2020 2019 ​ ​ (in thousands) Operating cash paid for amounts included in the measurement of lease liabilities ​ $ 565 ​ $ 522 ​ $ 1,125 ​ $ 1,043 Right-of-use assets obtained in exchange for new finance lease liabilities ​ ​ — ​ ​ 716 ​ ​ — ​ ​ 15,207 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, ​ ​ ​ 2020 2019 ​ Weighted-average remaining lease term - operating leases ​ 8.7 years ​ 9.2 years ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average discount rate - operating leases ​ 3.04 % 3.30 % ​ The table below summarizes the maturity of remaining lease liabilities: ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ (in thousands) Twelve Months Ended: ​ ​ ​ June 30, 2021 $ 2,027 June 30, 2022 ​ 2,351 June 30, 2023 ​ 2,244 June 30, 2024 ​ 1,995 March 31, 2025 ​ 1,893 Thereafter ​ 8,483 Total future minimum lease payments ​ 18,993 Less: Interest ​ (3,146) Present value of net future minimum lease payments $ 15,847 ​

Accounting Policies and Basis_2

Accounting Policies and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Standards Updates and Recently Adopted Standards
Basis of Presentation	Basis of Presentation The accounting and financial reporting policies of Atlantic Capital Bancshares, Inc. (“Atlantic Capital” or the “Company”) and its subsidiary, Atlantic Capital Bank, N.A. (the “Bank”), conform to accounting principles generally accepted in the United States of America (“GAAP”) and general banking industry practices. The accompanying interim consolidated financial statements have not been audited. All material intercompany balances and transactions have been eliminated. In management’s opinion, all accounting adjustments necessary to accurately reflect the financial position and results of operations on the accompanying financial statements have been made. These adjustments are normal and recurring accruals considered necessary for a fair and accurate presentation. Certain prior period amounts have been reclassified to conform to the current year presentation. The accompanying consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in Atlantic Capital’s Annual Report on Form 10-K. The results for interim periods are not necessarily indicative of results for the full year or any other interim periods.
Adoption of New Accounting Standard	Adoption of New Accounting Standard ​ On January 1, 2020, the Company adopted Accounting Standards Update (“ASU”) 2016-13 Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ​ The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a decrease to retained earnings of $72,000, net of tax, as of January 1, 2020 for the cumulative effect of adopting ASC 326. The transition adjustment includes a $1.3 million increase related to the allowance for credit losses on unfunded commitments mostly offset by an $854,000 decrease related to the allowance for credit losses on loans as well as a $20,000 increase related to held-to-maturity securities. ​ ​ The Company finalized the adoption as of January 1, 2020 as detailed in the following table ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ January 1, 2020 ​ ​ ​ ​ ​ ​ As Reported ​ ​ Impact of ​ ​ ​ Pre-ASC 326 ​ ​ Under ​ ​ ASC 326 (in thousands) ​ ​ Adoption ​ ​ ASC 326 ​ ​ Adoption (1) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on debt securities held-to-maturity ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions - tax-exempt ​ $ - ​ $ 13 ​ $ 13 U.S. states and political divisions - taxable ​ ​ - ​ ​ 7 ​ ​ 7 Total allowance for credit losses on debt securities held-to-maturity ​ ​ - ​ ​ 20 ​ ​ 20 Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ 9,015 ​ ​ 8,578 ​ ​ (437) Commercial real estate ​ ​ 7,504 ​ ​ 6,868 ​ ​ (636) Construction and land ​ 1,685 ​ ​ 1,819 ​ ​ 134 Residential mortgages ​ ​ 81 ​ ​ 108 ​ ​ 27 Home equity ​ ​ 63 ​ ​ 121 ​ ​ 58 Consumer ​ ​ 42 ​ ​ 101 ​ ​ 59 Other ​ ​ 145 ​ ​ 78 ​ ​ (67) Mortgage warehouse ​ ​ - ​ ​ 8 ​ ​ 8 Total allowance for credit losses on loans ​ ​ 18,535 ​ ​ 17,681 ​ ​ (854) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on unfunded commitments ​ ​ 892 ​ ​ 2,167 ​ ​ 1,275 Total allowance for credit losses ​ $ 19,427 ​ $ 19,868 ​ $ 441 (1) he adoption of CECL resulted in a reduction of retained earnings totaling $72,000 , net of tax.
Allowance for Credit Losses-Held-to-Maturity Securities	Allowance for Credit Losses on Held-to-Maturity Securities ​ Management measures expected credit losses on held-to-maturity securities by individual security. Accrued interest receivable on held-to-maturity debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers credit ratings and historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. ​ The held-to-maturity portfolio consists entirely of municipal securities. Securities are generally rated A or higher. Securities are analyzed individually to establish a CECL mark.
Allowance for Credit Losses on Available-for-Sale Securities	Allowance for Credit Losses on Available-for-Sale Securities ​ For available-for-sale securities in an unrealized loss position, management first assesses whether it intends to sell, or is more likely than not be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For debt securities available-for-sale that do not meet the aforementioned criteria, Atlantic Capital evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income (“OCI”). ​ Changes in the allowance for credit losses are recorded as a provision for (or reversal of) credit loss expense. Losses are charged against the allowance when management believes the uncollectibility of an available-for-sale security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities is not included in the estimate of credit losses.
Allowance for Credit Losses on Loans	Allowance for Credit Losses on Loans ​ The allowance for credit losses on loans is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed and recoveries are credited to the allowance when received. The Company may also account for expected recoveries should information of an anticipated recovery become available. In the case of actual or expected recoveries, amounts may not exceed the aggregate of amounts previously charged off. ​ Management utilizes relevant available information, from internal and external sources, relating to past events, current conditions, historical loss experience, and reasonable and supportable forecasts. The lookback period in the analysis includes historical data from June 2015 to present. Adjustments to historical loss information are made when management determines historical data are not likely reflective of the current portfolio such as limited data sets or lack of default or loss history. Management may selectively apply external market data to subjectively adjust the Company’s own loss history including index or peer data. Accrued interest receivable was excluded from the estimate of credit losses for loans.
Collective Assessment	Collective Assessment ​ The allowance for credit losses on loans is measured on a collective cohort basis when similar risk characteristics exist. Generally, collectively assessed loans are grouped by call report code and then risk grade grouping. Risk grade is grouped within each call code by pass, special mention, substandard, and doubtful. Other loan types are separated into their own cohorts due to specific risk characteristics for that pool of loans. Examples include CD-secured fintech loans, Small Business Administration (“SBA”) purchased loans, PPP loans and TriNet loans. ​ The Company has elected the discounted cash flows (“DCF”) methodology with probability of default (“PD”) and loss given default (“LGD”) for all call code cohorts and TriNet. CD-secured fintech loans, PPP loans and SBA purchased loans are measured with zero risk due to cash collateral and full guaranty, respectively. ​ The PD calculation looks at the historical loan portfolio at particular points in time (each month during the lookback period) to determine the probability that loans in a certain cohort will default over the next 12 month period. A default is defined as a loan that has moved to past due 90 days and greater, nonaccrual status, or experienced a charge-off during the period. In cohorts where the Company’s historical data are insufficient due to less than 20 loans on average in the pool or zero defaults, management uses index PDs in place of the Company’s historical PDs. Additionally, management reviews all other cohorts to determine if index PDs should be used outside of these criteria. ​ The LGD calculation looks at actual losses (net charge-offs) experienced over the entire lookback period for each cohort of loans. The aggregate loss amount is divided by the exposure at default to determine an LGD rate. All defaults (non-accrual, charge-off, or greater than 90 days past due) occurring during the lookback period are included in the denominator, whether a loss occurred or not and exposure at default is determined by the loan balance immediately preceding the default event (i.e. nonaccrual or charge-off). Due to very limited charge-off history, management uses index LGDs in place of the Company’s historical LGDs. ​ The Company utilizes reasonable and supportable forecasts of future economic conditions when estimating the allowance for credit losses on loans. The calculation includes a 12-month PD forecast based on the Company’s regression model comparing peer nonperforming loan ratios to the national unemployment rate and the most recently published Wall Street Journal survey of economists’ forecast. After the forecast period, PD rates revert on a straight-line basis to long-term average rates over a 12-month period. ​ The Company recognizes that all significant factors that affect the collectability of the loan portfolio must be considered to determine the estimated credit losses as of the evaluation date. Furthermore, the DCF methodology, in and of itself and even when selectively adjusted by comparison to market and peer data, does not provide a sufficient basis to determine the estimated credit losses. The Company adjusts the modeled historical losses by a Qualitative and Environmental factor to incorporate all significant risks to form a sufficient basis to estimate the credit losses.
Individual Assessment	Individual Assessment ​ Loans classified as Nonaccrual, Troubled Debt Restructuring (“TDR”), or Reasonably Expected TDR will be reviewed quarterly for potential individual assessment. Any loan classified as a Nonaccrual or TDR that is not determined to need individual assessment will be evaluated collectively within its respective cohort. All Reasonably Expected TDR loans will be evaluated individually to account for expected modifications in loan terms. ​ Where the primary and/or expected source of repayment of a specific loan is believed to be the future liquidation of available collateral, impairment will generally be measured based upon expected future collateral proceeds, net of disposition expenses including sales commissions as well as other costs potentially necessary to sell the asset(s) (i.e. past due taxes, liens, etc.) Estimates of future collateral proceeds will be based upon available appraisals, reference to recent valuations of comparable properties, use of consultants or other professionals with relevant market and/or property-specific knowledge, and any other sources of information believed appropriate by management under the specific circumstances. When appraisals are ordered to support the impairment analysis of an impaired loan, the appraisal is reviewed by Atlantic Capital’s internal appraisal reviewer or a qualified third party reviewer. ​ Where the primary and/or expected source of repayment of a specific loan is believed to be the receipt of principal and interest payments from the borrower and/or the refinancing of the loan by another creditor, impairment will generally be measured based upon the present value of expected proceeds discounted at the contractual interest rate. Expected refinancing proceeds may be estimated from review of term sheets actually received by the borrower from other creditors and/or from the Company’s knowledge of terms generally available from other banks, asset-based lenders, factoring companies and institutional lenders (Government Sponsored Entities, insurance companies, etc.) ​
Determining the Contractual Term	Determining the Contractual Term ​ Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company. Prepayment assumptions will be determined by analysis of historical behavior by loan cohort.
Troubled Debt Restructurings (TDRs)	Troubled Debt Restructurings ​ A loan for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a TDR. Any loan that is being considered for modification and expected to result in a TDR is identified as a Reasonably Expected TDR. Reasonably Expected TDRs are assessed in the CECL calculation utilizing their expected modified terms. The allowance for credit losses on a TDR is measured using the same method as all other loans held for investment, except that the original interest rate is used to discount the expected cash flows when a rate modification has occurred.
Allowance for Credit Losses on Unfunded Commitments	Allowance for Credit Losses on Unfunded Commitments ​ Atlantic Capital estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by Atlantic Capital. The allowance for credit losses on unfunded commitments is adjusted through a provision for credit loss expense. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life. The estimate utilizes the same factors and assumptions as the allowance for credit losses on loans and is applied at the same collective cohort level.

Accounting Standards Updates _2

Accounting Standards Updates and Recently Adopted Standards (Tables)	6 Months Ended
	Jun. 30, 2020
Accounting Standards Updates and Recently Adopted Standards
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The Company finalized the adoption as of January 1, 2020 as detailed in the following table ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ January 1, 2020 ​ ​ ​ ​ ​ ​ As Reported ​ ​ Impact of ​ ​ ​ Pre-ASC 326 ​ ​ Under ​ ​ ASC 326 (in thousands) ​ ​ Adoption ​ ​ ASC 326 ​ ​ Adoption (1) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on debt securities held-to-maturity ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions - tax-exempt ​ $ - ​ $ 13 ​ $ 13 U.S. states and political divisions - taxable ​ ​ - ​ ​ 7 ​ ​ 7 Total allowance for credit losses on debt securities held-to-maturity ​ ​ - ​ ​ 20 ​ ​ 20 Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ ​ 9,015 ​ ​ 8,578 ​ ​ (437) Commercial real estate ​ ​ 7,504 ​ ​ 6,868 ​ ​ (636) Construction and land ​ 1,685 ​ ​ 1,819 ​ ​ 134 Residential mortgages ​ ​ 81 ​ ​ 108 ​ ​ 27 Home equity ​ ​ 63 ​ ​ 121 ​ ​ 58 Consumer ​ ​ 42 ​ ​ 101 ​ ​ 59 Other ​ ​ 145 ​ ​ 78 ​ ​ (67) Mortgage warehouse ​ ​ - ​ ​ 8 ​ ​ 8 Total allowance for credit losses on loans ​ ​ 18,535 ​ ​ 17,681 ​ ​ (854) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for credit losses on unfunded commitments ​ ​ 892 ​ ​ 2,167 ​ ​ 1,275 Total allowance for credit losses ​ $ 19,427 ​ $ 19,868 ​ $ 441 (1) he adoption of CECL resulted in a reduction of retained earnings totaling $72,000 , net of tax.

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	6 Months Ended
	Jun. 30, 2020
Acquisitions and Divestitures
Disposal Groups, Including Discontinued Operations	The following table presents results of the discontinued operations for the three and six months ended June 30, 2019: Components of Net Income from Discontinued Operations ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended (in thousands) June 30, 2019 June 30, 2019 Net interest income (loss) ​ $ (39) ​ $ 3,086 Service charges ​ 46 ​ 527 Mortgage income ​ — ​ 288 Gain on sale of branches ​ 34,475 ​ 34,475 Other income ​ (22) ​ (1) Total noninterest income ​ 34,499 ​ 35,289 Salaries and employee benefits ​ 330 ​ 2,757 Occupancy ​ 71 ​ 410 Equipment and software ​ 8 ​ 131 Amortization of intangibles ​ — ​ 247 Communications and data processing ​ 197 ​ 586 Divestiture expense ​ 3,646 ​ 5,095 Other noninterest expense ​ 101 ​ 459 Total noninterest expense ​ 4,353 ​ 9,685 Net income before provision for income taxes ​ 30,107 ​ 28,690 Provision for income taxes ​ 7,964 ​ 7,610 Net income from discontinued operations ​ $ 22,143 ​ $ 21,080

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	6 Months Ended
	Jun. 30, 2020
Balance Sheet Offsetting
Offsetting Assets	The following table presents a summary of amounts outstanding in derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements at June 30, 2020 and December 31, 2019. While these agreements are typically over-collateralized, GAAP requires disclosures in this table to limit the amount of such collateral to the amount of the related recognized asset or liability for each counterparty. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ (in thousands) ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ June 30, 2020 ​ Assets ​ Balance Sheet ​ Balance ​ Instruments ​ Received ​ Net Amount Derivatives ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 Total ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — Total ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ ​ Gross ​ ​ ​ ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ December 31, 2019 Assets Balance Sheet Balance Instruments Received Net Amount Derivatives ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 Total ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ — Total ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ —
Offsetting Liabilities	The following table presents a summary of amounts outstanding in derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements at June 30, 2020 and December 31, 2019. While these agreements are typically over-collateralized, GAAP requires disclosures in this table to limit the amount of such collateral to the amount of the related recognized asset or liability for each counterparty. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ (in thousands) ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ June 30, 2020 ​ Assets ​ Balance Sheet ​ Balance ​ Instruments ​ Received ​ Net Amount Derivatives ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 Total ​ $ 25,677 ​ $ — ​ $ 25,677 ​ $ — ​ $ — ​ $ 25,677 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — Total ​ $ 13,012 ​ $ — ​ $ 13,012 ​ $ (13,012) ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ ​ Gross ​ ​ ​ ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Asset ​ Financial ​ Collateral ​ ​ ​ December 31, 2019 Assets Balance Sheet Balance Instruments Received Net Amount Derivatives ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 Total ​ $ 8,856 ​ $ — ​ $ 8,856 ​ $ — ​ $ — ​ $ 8,856 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Amounts not Offset in the ​ ​ ​ ​ Gross ​ ​ ​ ​ Balance Sheet ​ ​ ​ ​ Amounts of ​ Gross Amounts ​ Net ​ ​ ​ ​ Cash ​ ​ ​ ​ ​ Recognized ​ Offset on the ​ Liability ​ Financial ​ Collateral ​ ​ ​ ​ ​ Liabilities ​ Balance Sheet ​ Balance ​ Instruments ​ Pledged ​ Net Amount Derivatives ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ — Total ​ $ 5,647 ​ $ — ​ $ 5,647 ​ $ (5,647) ​ $ — ​ $ —

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2020
Securities
Schedule of Securities Available-For-Sale and Held-to-Maturity Reconciliation	The following table presents the amortized cost, fair value, and allowance for credit losses on securities available-for-sale and held-to-maturity at June 30, 2020 and December 31, 2019 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) and gross unrecognized gains and losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ ​ ​ ​ ​ ​ ​ ​ ​ Cost Gains Losses Fair Value ​ ​ ​ ​ ​ ​ (in thousands) ​ ​ ​ June 30, 2020 ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 80,744 ​ $ 2,411 ​ $ (13) ​ $ 83,142 ​ ​ ​ ​ ​ ​ Trust preferred securities ​ 4,821 ​ — ​ (446) ​ ​ 4,375 ​ ​ ​ ​ Corporate debt securities ​ 19,541 ​ 294 ​ (152) ​ ​ 19,683 ​ ​ ​ ​ Residential mortgage-backed securities ​ 157,813 ​ 6,832 ​ (16) ​ ​ 164,629 ​ ​ ​ ​ Total available-for-sale ​ ​ 262,919 ​ ​ 9,537 ​ ​ (627) ​ ​ 271,829 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ Allowance ​ Net ​ ​ Amortized ​ Unrecognized ​ Unrecognized ​ ​ ​ ​ for Credit ​ Carrying ​ ​ Cost ​ Gains ​ Losses ​ Fair Value ​ Losses ​ Value Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 185,933 ​ ​ 8,795 ​ ​ (66) ​ ​ 194,662 ​ ​ (13) ​ ​ 185,920 Total held-to-maturity ​ ​ 185,933 ​ ​ 8,795 ​ ​ (66) ​ ​ 194,662 ​ ​ (13) ​ ​ 185,920 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total securities ​ $ 448,852 ​ $ 18,332 ​ $ (693) ​ $ 466,491 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ Amortized ​ Unrealized ​ Unrealized ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ Cost ​ Gains ​ Losses ​ Fair Value ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 81,865 ​ $ 863 ​ $ (243) ​ $ 82,485 ​ ​ ​ ​ ​ ​ Trust preferred securities ​ 4,808 ​ — ​ (120) ​ ​ 4,688 ​ ​ ​ ​ ​ ​ Corporate debt securities ​ 19,557 ​ 363 ​ — ​ ​ 19,920 ​ ​ ​ ​ ​ ​ Residential mortgage-backed securities ​ 173,047 ​ 2,797 ​ (476) ​ ​ 175,368 ​ ​ ​ ​ ​ ​ Total available-for-sale ​ ​ 279,277 ​ ​ 4,023 ​ ​ (839) ​ ​ 282,461 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 116,972 ​ ​ 104 ​ ​ (1,785) ​ ​ 115,291 ​ ​ ​ ​ ​ ​ Total held-to-maturity ​ ​ 116,972 ​ ​ 104 ​ ​ (1,785) ​ ​ 115,291 ​ ​ ​ ​ ​ ​ Total securities ​ $ 396,249 ​ $ 4,127 ​ $ (2,624) ​ $ 397,752 ​ ​ ​ ​ ​ ​
Schedule of allowance for credit losses	The following table presents the activity in the allowance for credit losses on securities held-to-maturity by major security type for the three and six months ended June 30, 2020. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ ​ 2020 ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total ​ (in thousands) Allowance for credit losses on securities held-to-maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance $ 10 ​ $ 4 ​ $ 14 Provision for credit losses ​ (1) ​ — ​ ​ (1) Securities charged-off ​ ​ — ​ ​ — ​ ​ — Recoveries ​ — ​ — ​ ​ — Total ending allowance balance $ 9 ​ $ 4 ​ $ 13 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, ​ ​ 2020 ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total ​ ​ (in thousands) Allowance for credit losses on securities held-to-maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance $ — ​ $ — ​ $ — Impact of adopting ASU 2016-13 ​ ​ 13 ​ ​ 7 ​ ​ 20 Provision for credit losses ​ (4) ​ (3) ​ ​ (7) Securities charged-off ​ ​ — ​ ​ — ​ ​ — Recoveries ​ — ​ — ​ ​ — Total ending allowance balance $ 9 ​ $ 4 ​ $ 13
Investments Classified by Contractual Maturity Date	The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at June 30, 2020. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-For-Sale ​ Held-to-Maturity ​ Amortized Fair Amortized Fair ​ ​ Cost ​ Value ​ Cost ​ Value ​ (in thousands) Within 1 year ​ $ 6,030 ​ $ 6,182 ​ $ — ​ $ — Over 1 year through 5 years ​ 4,536 ​ 4,712 ​ — ​ — 5 years to 10 years ​ 36,260 ​ 36,564 ​ 318 ​ 319 Over 10 years ​ 58,280 ​ 59,742 ​ 185,615 ​ 194,343 ​ ​ 105,106 ​ 107,200 ​ 185,933 ​ 194,662 Residential mortgage-backed securities ​ 157,813 ​ 164,629 ​ — ​ — Total ​ $ 262,919 ​ $ 271,829 ​ $ 185,933 ​ $ 194,662
Schedule of amortized cost of debt securities held-to-maturity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Held-to-Maturity ​ ​ ​ U.S. States and ​ U.S. States and ​ ​ ​ ​ ​ ​ Political Subdivisions ​ Political Subdivisions ​ ​ ​ ​ Tax-exempt Taxable ​ Total June 30, 2020 ​ (in thousands) Aa1 $ 32,321 ​ $ 7,748 ​ $ 40,069 Aa2 ​ ​ ​ 32,173 ​ ​ 20,871 ​ ​ 53,044 Aa3 ​ ​ 19,452 ​ 4,047 ​ ​ 23,499 Aaa ​ ​ ​ 48,550 ​ ​ 20,771 ​ ​ 69,321 Total $ 132,496 ​ $ 53,437 ​ $ 185,933 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Continuous Unrealized Loss Position, Fair Value	The following table summarizes available-for-sale and held-to-maturity securities in an unrealized loss position as of June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Less than 12 months ​ 12 months or greater ​ Totals ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized June 30, 2020 Value Losses Value Losses Value Losses ​ (in thousands) Available-for-Sale ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 1,977 ​ $ (13) ​ $ — ​ $ — ​ $ 1,977 ​ $ (13) Trust preferred securities ​ — ​ — ​ 4,375 ​ (446) ​ 4,375 ​ (446) Corporate debt securities ​ 9,848 ​ (152) ​ — ​ — ​ 9,848 ​ (152) Residential mortgage-backed securities ​ — ​ — ​ 1,972 ​ (16) ​ 1,972 ​ (16) Total available-for-sale ​ ​ 11,825 ​ ​ (165) ​ ​ 6,347 ​ ​ (462) ​ ​ 18,172 ​ ​ (627) Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 16,333 ​ ​ (66) ​ ​ — ​ ​ — ​ ​ 16,333 ​ ​ (66) Total held-to-maturity ​ ​ 16,333 ​ ​ (66) ​ ​ — ​ ​ — ​ ​ 16,333 ​ ​ (66) Total securities ​ $ 28,158 ​ $ (231) ​ $ 6,347 ​ $ (462) ​ $ 34,505 ​ $ (693) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Available-for-Sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ $ 20,019 ​ $ (190) ​ $ 4,090 ​ $ (53) ​ $ 24,109 ​ $ (243) Trust preferred securities ​ — ​ — ​ 4,687 ​ (120) ​ 4,687 ​ (120) Residential mortgage-backed securities ​ 10,751 ​ (78) ​ 30,292 ​ (398) ​ 41,043 ​ (476) Total available-for-sale ​ ​ 30,770 ​ ​ (268) ​ ​ 39,069 ​ ​ (571) ​ ​ 69,839 ​ ​ (839) Held-to-Maturity ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. states and political divisions ​ ​ 96,854 ​ ​ (1,785) ​ ​ — ​ ​ — ​ ​ 96,854 ​ ​ (1,785) Total held-to-maturity ​ ​ 96,854 ​ ​ (1,785) ​ ​ — ​ ​ — ​ ​ 96,854 ​ ​ (1,785) Total securities ​ $ 127,624 ​ $ (2,053) ​ $ 39,069 ​ $ (571) ​ $ 166,693 ​ $ (2,624)
Schedule of Realized Gain (Loss) on Securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ 2020 2019 2020 2019 ​ ​ (in thousands) ​ Proceeds from sales ​ $ — ​ $ 54,938 ​ $ — ​ $ 54,938 ​ Gross realized gains ​ ​ — ​ $ 1,122 ​ $ — ​ $ 1,122 ​ Gross realized losses ​ — ​ (468) ​ — ​ (468) ​ Net gains on sales of securities ​ $ — ​ $ 654 ​ $ — ​ $ 654 ​

Loans and Allowance for credit

Loans and Allowance for credit losses (Tables)	6 Months Ended
	Jun. 30, 2020
Loans and Allowance for Loan Losses
Schedule of Accounts, Notes, Loans and Financing Receivable	The composition of the loan portfolio as of June 30, 2020 and December 31, 2019, is summarized below. ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Loans held for sale ​ ​ Loans held for sale ​ 1,153 ​ 370 Total loans held for sale ​ $ 1,153 ​ $ 370 ​ ​ ​ ​ ​ ​ ​ Loans held for investment ​ ​ Commercial loans: ​ ​ Commercial and industrial ​ $ 973,818 ​ $ 705,115 Commercial real estate ​ 900,321 ​ 916,328 Construction and land ​ 128,991 ​ 127,540 Mortgage warehouse participations ​ — ​ 13,941 Total commercial loans ​ 2,003,130 ​ 1,762,924 Residential: ​ ​ ​ ​ Residential mortgages ​ 32,327 ​ 31,315 Home equity ​ 23,689 ​ 25,002 Total residential loans ​ 56,016 ​ 56,317 Consumer ​ 113,149 ​ 37,765 Other ​ 22,160 ​ 19,552 Total loans ​ 2,194,455 ​ 1,876,558 Less net deferred fees and other unearned income ​ (9,761) ​ (3,034) Less allowance for credit losses on loans ​ (31,605) ​ (18,535) Loans held for investment, net ​ $ 2,153,089 ​ $ 1,854,989
Schedule of Allowance for Credit Losses on Financing Receivables	The following table presents the balance and activity in the allowance for credit losses on loans by portfolio segment for the three months ended June 30, 2020 and 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ ​ 2020 ​ 2019 ​ ​ Commercial ​ Residential ​ Consumer ​ Total ​ Commercial ​ Residential ​ Consumer ​ Total ​ ​ (in thousands) Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance, prior to adoption of ASC 326 ​ $ 23,830 ​ $ 415 ​ $ 651 ​ $ 24,896 ​ $ 17,397 ​ $ 447 ​ $ 263 ​ $ 18,107 Provision for loan losses ​ 8,482 ​ ​ 138 ​ ​ (398) ​ 8,222 ​ 1,055 ​ (283) ​ (74) ​ 698 Loans charged-off (1,479) ​ ​ (36) ​ ​ — (1,515) (635) — — (635) Recoveries ​ 1 ​ ​ — ​ ​ 1 ​ 2 ​ — ​ — ​ 16 ​ 16 Total ending allowance balance ​ $ 30,834 ​ $ 517 ​ $ 254 ​ $ 31,605 ​ $ 17,817 ​ $ 164 ​ $ 205 ​ $ 18,186 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Six Months Ended June 30, ​ ​ 2020 ​ 2019 ​ ​ Commercial ​ Residential ​ Consumer ​ Total ​ Commercial ​ Residential ​ Consumer ​ Total ​ ​ (in thousands) Allowance for credit losses on loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance, prior to adoption of ASC 326 ​ $ 18,203 ​ $ 145 ​ $ 187 ​ $ 18,535 ​ $ 17,322 ​ $ 292 ​ $ 237 ​ $ 17,851 Impact of adopting ASC 326 ​ ​ (947) ​ ​ 8 ​ ​ 85 ​ ​ (854) ​ ​ — ​ ​ — ​ ​ — ​ ​ — Provision for loan losses ​ 15,134 ​ ​ 524 ​ ​ (27) ​ 15,631 ​ 1,662 ​ (127) ​ (23) ​ 1,512 Loans charged-off (1,575) ​ ​ (161) ​ ​ — (1,736) (1,184) (9) (37) (1,230) Recoveries ​ 19 ​ ​ 1 ​ ​ 9 ​ 29 ​ 17 ​ 8 ​ 28 ​ 53 Total ending allowance balance ​ $ 30,834 ​ $ 517 ​ $ 254 ​ $ 31,605 ​ $ 17,817 ​ $ 164 ​ $ 205 ​ $ 18,186
Troubled Debt Restructurings on Financing Receivables	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pre-Modification ​ ​ Post-Modification ​ ​ ​ ​ Outstanding ​ ​ Outstanding ​ Number of Loans Recorded Investment Recorded Investment ​ ​ ​ ​ (in thousands) Three Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ — ​ $ — ​ $ — Total — ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial 1 ​ $ 67 ​ $ 67 Commercial real estate 1 ​ 1,945 ​ 1,945 Total 2 ​ $ 2,012 ​ $ 2,012 ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, 2019 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ 3 ​ $ 382 ​ $ 382 Total 3 ​ $ 382 ​ $ 382 ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2019 ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial 6 ​ $ 1,235 ​ $ 1,235 Commercial real estate 2 ​ 926 ​ 926 Total 8 ​ $ 2,161 ​ $ 2,161
Schedule of Financing Receivable Credit Quality Indicators	As of June 30, 2020, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Loans Amortized Cost Basis by Origination Year ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving Loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ ​ ​ ​ 2020 2019 2018 2017 2016 Prior Cost Basis Total ​ ​ (in thousands) ​ ​ ​ June 30, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial - commercial and industrial: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 322,442 ​ $ 160,555 ​ $ 112,710 ​ $ 50,353 ​ $ 38,884 ​ $ 18,496 ​ $ 188,250 ​ $ 891,690 Special mention ​ — ​ 5,405 ​ 23,277 ​ 1,519 ​ — ​ ​ 349 ​ ​ 30,546 ​ 61,096 Substandard ​ — ​ 1,929 ​ 4,943 ​ 2,214 ​ 1,059 ​ ​ 6,505 ​ ​ 4,344 ​ 20,994 Doubtful ​ — ​ 342 ​ — ​ — ​ — ​ ​ (304) ​ ​ — ​ 38 Total commercial - commercial and industrial ​ $ 322,442 ​ $ 168,231 ​ $ 140,930 ​ $ 54,086 ​ $ 39,943 ​ $ 25,046 ​ $ 223,140 ​ $ 973,818 Commercial - commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 48,120 ​ $ 169,996 ​ $ 141,651 ​ $ 106,354 ​ $ 139,914 ​ $ 228,636 ​ $ 8,977 ​ $ 843,648 Special mention ​ — ​ 2,879 ​ 5,521 ​ 1,099 ​ 10,533 ​ ​ 4,221 ​ ​ — ​ 24,253 Substandard ​ — ​ 11,532 ​ 1,591 ​ 3,003 ​ — ​ ​ 16,244 ​ ​ 50 ​ 32,420 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total commercial - commercial real estate loans ​ $ 48,120 ​ $ 184,407 ​ $ 148,763 ​ $ 110,456 ​ $ 150,447 ​ $ 249,101 ​ $ 9,027 ​ $ 900,321 Commercial - construction and land: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 34,958 ​ $ 52,732 ​ $ 24,113 ​ $ — ​ $ 4,407 ​ $ 1,982 ​ $ 1,845 ​ $ 120,037 Special mention ​ — ​ 8,954 ​ — ​ — ​ — ​ ​ — ​ ​ — ​ 8,954 Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total commercial - construction and land loans ​ $ 34,958 ​ $ 61,686 ​ $ 24,113 ​ $ — ​ $ 4,407 ​ $ 1,982 ​ $ 1,845 ​ $ 128,991 Residential - mortgages: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 2,972 ​ $ 3,241 ​ $ 15,687 ​ $ 1,977 ​ $ 5,256 ​ $ 232 ​ $ 227 ​ $ 29,592 Special mention ​ 697 ​ — ​ 862 ​ 768 ​ — ​ ​ — ​ ​ — ​ 2,327 Substandard ​ — ​ — ​ 179 ​ — ​ 26 ​ ​ 203 ​ ​ — ​ 408 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total residential - mortgage loans ​ $ 3,669 ​ $ 3,241 ​ $ 16,728 ​ $ 2,745 ​ $ 5,282 ​ $ 435 ​ $ 227 ​ $ 32,327 Residential - home equity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,689 ​ $ 23,689 Special mention ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total residential - home equity loans ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 23,689 ​ $ 23,689 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 250 ​ $ 2,283 ​ $ 53 ​ $ 64 ​ $ 70 ​ $ 106,865 ​ $ 3,564 ​ $ 113,149 Special mention ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Substandard ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total consumer loans ​ $ 250 ​ $ 2,283 ​ $ 53 ​ $ 64 ​ $ 70 ​ $ 106,865 ​ $ 3,564 ​ $ 113,149 Consumer - other: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Risk rating ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ — ​ $ 4,794 ​ $ 2,112 ​ $ 232 ​ $ 784 ​ $ 6,982 ​ $ 14,904 Special mention ​ — ​ 6,798 ​ — ​ — ​ — ​ ​ — ​ ​ — ​ 6,798 Substandard ​ — ​ — ​ — ​ 458 ​ — ​ ​ — ​ ​ — ​ 458 Doubtful ​ — ​ — ​ — ​ — ​ — ​ ​ — ​ ​ — ​ — Total consumer - other loans ​ $ — ​ $ 6,798 ​ $ 4,794 ​ $ 2,570 ​ $ 232 ​ $ 784 ​ $ 6,982 ​ $ 22,160 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 408,742 ​ $ 388,807 ​ $ 299,008 ​ $ 160,860 ​ $ 188,763 ​ $ 356,995 ​ $ 233,534 ​ $ 2,036,709 Special Mention ​ ​ 697 ​ ​ 24,036 ​ ​ 29,660 ​ ​ 3,386 ​ ​ 10,533 ​ ​ 4,570 ​ ​ 30,546 ​ ​ 103,428 Substandard ​ ​ — ​ ​ 13,461 ​ ​ 6,713 ​ ​ 5,675 ​ ​ 1,085 ​ ​ 22,952 ​ ​ 4,394 ​ ​ 54,280 Doubtful ​ ​ — ​ ​ 342 ​ ​ — ​ ​ — ​ ​ — ​ ​ (304) ​ ​ — ​ ​ 38 Total ​ $ 409,439 ​ $ 426,646 ​ $ 335,381 ​ $ 169,921 ​ $ 200,381 ​ $ 384,213 ​ $ 268,474 ​ $ 2,194,455 ​ As of December 31, 2019, the risk category of loans by class of loans is as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ Substandard ​ Substandard ​ Doubtful ​ ​ ​ Pass Mention Accruing Nonaccruing Nonaccruing Total ​ (in thousands) December 31, 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 648,895 $ 40,179 $ 10,051 $ 5,990 $ - $ 705,115 Commercial real estate ​ ​ 891,078 ​ ​ 5,483 ​ ​ 19,504 ​ ​ 263 ​ ​ - ​ ​ 916,328 Construction and land ​ ​ 127,540 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 127,540 Residential mortgages ​ ​ 30,941 ​ ​ - ​ ​ 119 ​ ​ 151 ​ ​ 104 ​ ​ 31,315 Home equity ​ ​ 24,302 ​ ​ - ​ ​ - ​ ​ 700 ​ ​ - ​ ​ 25,002 Mortgage warehouse ​ ​ 13,941 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 13,941 Consumer/Other ​ ​ 56,336 ​ ​ 500 ​ ​ 481 ​ ​ - ​ ​ - ​ ​ 57,317 Total Loans ​ $ 1,793,033 ​ $ 46,162 ​ $ 30,155 ​ $ 7,104 ​ $ 104 ​ $ 1,876,558
Schedule of Past Due Financing Receivables	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, 2020 ​ ​ 30 - 59 ​ 60 - 89 ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ ​ ​ Total Past Due ​ Loans Not ​ ​ ​ Past Due Past Due Past Due Nonaccruing and Nonaccruing Past Due Total ​ (in thousands) Loans by Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ $ 828 ​ $ 284 ​ $ — ​ $ 5,658 ​ $ 6,770 ​ $ 967,048 ​ $ 973,818 Commercial real estate ​ — ​ ​ 364 ​ ​ — ​ ​ 157 ​ ​ 521 ​ 899,800 ​ 900,321 Construction and land ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ 128,991 ​ 128,991 Residential mortgages ​ 2,063 ​ ​ — ​ ​ 335 ​ ​ 115 ​ ​ 2,513 ​ 29,814 ​ 32,327 Home equity ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ 23,689 ​ 23,689 Consumer ​ 2,453 ​ ​ 923 ​ ​ — ​ ​ — ​ ​ 3,376 ​ 131,933 ​ 135,309 Total Loans ​ $ 5,344 ​ $ 1,571 ​ $ 335 ​ $ 5,930 ​ $ 13,180 ​ $ 2,181,275 ​ $ 2,194,455 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2019 ​ ​ 30 - 59 ​ 60 - 89 ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ ​ ​ Total Past Due ​ Loans Not ​ ​ ​ ​ Past Due Past Due Past Due Nonaccruing and Nonaccruing Past Due ​ Total ​ (in thousands) Loans by Classification ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial ​ $ 4,069 ​ $ 30 ​ $ — ​ $ 5,990 ​ $ 10,089 ​ $ 695,026 ​ $ 705,115 Commercial real estate ​ 1,194 ​ — ​ 85 ​ 262 ​ ​ 1,541 ​ 914,787 ​ ​ 916,328 Construction and land ​ — ​ — ​ — ​ — ​ ​ — ​ 127,540 ​ ​ 127,540 Residential mortgages ​ 707 ​ — ​ — ​ 256 ​ ​ 963 ​ 30,352 ​ ​ 31,315 Home equity ​ — ​ — ​ — ​ 700 ​ ​ 700 ​ 24,302 ​ ​ 25,002 Mortgage warehouse ​ — ​ — ​ — ​ — ​ ​ — ​ 13,941 ​ ​ 13,941 Consumer ​ 136 ​ — ​ — ​ — ​ ​ 136 ​ 57,181 ​ ​ 57,317 Total Loans ​ $ 6,106 ​ $ 30 ​ $ 85 ​ $ 7,208 ​ $ 13,429 ​ $ 1,863,129 ​ $ 1,876,558
Schedule of amortized cost basis of loans on nonaccrual status and loans past due over 89 days still accruing	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nonaccrual ​ ​ Nonaccrual ​ ​ ​ ​ ​ Loans Past ​ ​ ​ With No ​ ​ With ​ ​ ​ ​ ​ Due Over ​ ​ ​ Allowance for ​ ​ Allowance for ​ ​ Total ​ ​ 89 Days ​ ​ Credit Losses ​ Credit Losses ​ Nonaccrual ​ Still Accruing Commercial loans: ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 3,177 $ 2,481 $ 5,658 $ — Commercial real estate ​ 157 ​ — ​ 157 ​ — Total commercial loans ​ 3,334 ​ ​ 2,481 ​ ​ 5,815 ​ ​ — Residential mortgages ​ ​ 115 ​ ​ — ​ ​ 115 ​ ​ 335 Total loans ​ $ 3,449 $ 2,481 $ 5,930 $ 335
Schedule of amortized cost basis of collateral dependent impaired loans by class of loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real ​ ​ ​ ​ ​ Business ​ ​ SBA ​ ​ ​ ​ ​ Property ​ Equipment ​ Assets ​ Guaranty-75% ​ Total Commercial loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial and industrial $ 2,424 $ 544 $ 192 $ 1,476 $ 4,636 Commercial real estate ​ ​ 48 ​ ​ 109 ​ ​ — ​ ​ — ​ ​ 157 Total commercial loans ​ ​ 2,472 ​ ​ 653 ​ ​ 192 ​ ​ 1,476 ​ ​ 4,793 Residential mortgages ​ ​ 115 ​ ​ — ​ ​ — ​ ​ — ​ ​ 115 Total loans $ 2,587 $ 653 $ 192 $ 1,476 $ 4,908
Schedule Of Small Business Application Loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, 2020 ​ ​ Commercial and ​ Commercial ​ Residential ​ ​ ​ Industrial Real Estate Mortgages Total ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Repurchases of SBA participations $ - $ - $ - $ - SBA Sales ​ ​ 10,205 ​ ​ 1,334 ​ ​ - ​ ​ 11,539 Total Loans ​ $ 10,205 ​ $ 1,334 ​ $ — ​ $ 11,539 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, 2020 ​ ​ Commercial and ​ Commercial ​ Residential ​ ​ ​ Industrial Real Estate Mortgages Total ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Repurchases of SBA participations $ - $ - $ - $ - SBA Sales ​ ​ 16,169 ​ ​ 1,492 ​ ​ 277 ​ ​ 17,938 Total Loans ​ $ 16,169 ​ $ 1,492 ​ $ 277 ​ $ 17,938

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets
Schedule of Intangible Assets and Goodwill	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ For the Six Months Ended June 30, ​ Goodwill Core Deposit Intangible Total Goodwill Core Deposit Intangible Total ​ (in thousands) 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance, beginning of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925 Amortization ​ — ​ — ​ — ​ — ​ — ​ — Balance, end of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance, beginning of period $ 21,690 ​ $ 1,158 ​ $ 22,848 ​ $ 21,690 ​ $ 1,405 ​ $ 23,095 Amortization ​ — ​ — ​ — ​ — ​ (247) ​ (247) Impairment, due to Branch Sale ​ (1,765) ​ (1,158) ​ (2,923) ​ (1,765) ​ (1,158) ​ (2,923) Balance, end of period $ 19,925 ​ $ — ​ $ 19,925 ​ $ 19,925 ​ $ — ​ $ 19,925

Servicing Assets (Tables)

Servicing Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Servicing Assets
Changes in the Balance of Servicing Assets	Changes in the balance of servicing assets for the three and six months ended June 30, 2020 and 2019 are presented in the following table . ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, SBA Loan Servicing Assets 2020 2019 2020 2019 ​ ​ (in thousands) ​ (in thousands) Beginning carrying value, net ​ $ 2,523 ​ $ 2,677 ​ $ 2,731 ​ $ 2,539 Additions ​ 197 ​ 327 ​ 302 ​ 625 Amortization ​ (217) ​ (278) ​ (530) ​ (438) Ending carrying value ​ $ 2,503 ​ $ 2,726 ​ $ 2,503 ​ $ 2,726 Changes in the balance of TriNet servicing assets for the three and six months ended June 30, 2020 and 2019 are presented in the following table. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ TriNet Servicing Assets 2020 2019 2020 2019 ​ ​ ​ (in thousands) ​ (in thousands) ​ Beginning carrying value, net ​ $ 262 ​ $ 406 ​ $ 296 ​ $ 444 ​ Amortization ​ (34) ​ (37) ​ (68) ​ (75) ​ Ending carrying value ​ $ 228 ​ $ 369 ​ $ 228 ​ $ 369 ​
Schedule of Sensitivity to Immediate Changes in Key Economic Assumptions	At June 30, 2020 and December 31, 2019, the sensitivity of the fair value of the SBA loan servicing assets to immediate changes in key economic assumptions are presented in the table below . ​ ​ ​ ​ ​ ​ ​ ​ Sensitivity of the SBA Servicing Assets June 30, 2020 December 31, 2019 ​ ​ (dollars in thousands) Fair value of retained servicing assets ​ $ 2,654 ​ $ 2,842 ​ Weighted average life ​ 3.29 years ​ 3.77 years ​ Prepayment speed: ​ 17.49 % 14.87 % Decline in fair value due to a 10% adverse change ​ $ (97) ​ $ (150) ​ Decline in fair value due to a 20% adverse change ​ $ (202) ​ $ (254) ​ Weighted average discount rate ​ 12.78 % 13.66 % Decline in fair value due to a 100 bps adverse change ​ $ (39) ​ $ (98) ​ Decline in fair value due to a 200 bps adverse change ​ $ (93) ​ $ (156) ​ At June 30, 2020 and December 31, 2019, the sensitivity of the fair value of the TriNet servicing assets to immediate changes in key economic assumptions are presented in the table below . ​ ​ ​ ​ ​ ​ ​ ​ Sensitivity of the TriNet Servicing Assets June 30, 2020 December 31, 2019 ​ ​ (dollars in thousands) Fair value of retained servicing assets ​ $ 379 ​ $ 414 Weighted average life ​ 5.10 years ​ 5.58 years ​ Prepayment speed: ​ 5.00 % ​ 5.00 % Decline in fair value due to a 10% adverse change ​ $ (4) ​ $ (5) ​ Decline in fair value due to a 20% adverse change ​ $ (8) ​ $ (10) ​ Weighted average discount rate ​ 8.00 % 8.00 % Decline in fair value due to a 100 bps adverse change ​ $ (8) ​ $ (9) ​ Decline in fair value due to a 200 bps adverse change ​ $ (15) ​ $ (18) ​

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss)
Schedule of Accumulated Other Comprehensive Income (Loss)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended ​ ​ June 30, 2020 ​ June 30, 2020 ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Amount Benefit Amount Amount Benefit Amount ​ ​ (in thousands) Accumulated other comprehensive income (loss) beginning of period ​ $ 19,057 ​ $ (4,711) ​ $ 14,346 ​ $ 6,081 ​ $ (1,520) ​ $ 4,561 Unrealized net gains (losses) on investment securities available-for-sale ​ ​ 1,331 ​ (329) ​ 1,002 ​ ​ 5,726 ​ (1,407) ​ 4,319 Unrealized net gains (losses) on derivatives ​ ​ 720 ​ (178) ​ 542 ​ ​ 9,301 ​ (2,291) ​ 7,010 Accumulated other comprehensive income (loss) end of period ​ $ 21,108 ​ $ (5,218) ​ $ 15,890 ​ $ 21,108 ​ $ (5,218) ​ $ 15,890 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ For the Six Months Ended ​ ​ June 30, 2019 ​ June 30, 2019 ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ Income ​ ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ ​ ​ Tax ​ ​ ​ ​ ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Pre-Tax ​ (Expense) ​ After-Tax ​ Amount Benefit Amount Amount Benefit Amount ​ ​ (in thousands) Accumulated other comprehensive income (loss) beginning of period ​ $ (3,882) ​ $ 972 ​ $ (2,910) ​ $ (13,743) ​ $ 3,438 ​ $ (10,305) Unrealized net gains (losses) on investment securities available-for-sale ​ ​ 6,090 ​ (1,524) ​ 4,566 ​ ​ 14,562 ​ (3,642) ​ 10,920 Reclassification adjustment for net realized losses on investment securities available-for-sale ​ ​ (654) ​ 164 ​ (490) ​ ​ (654) ​ 164 ​ (490) Unrealized net gains (losses) on derivatives ​ ​ 3,220 ​ (805) ​ 2,415 ​ ​ 4,609 ​ (1,153) ​ 3,456 Accumulated other comprehensive income (loss) end of period ​ $ 4,774 ​ $ (1,193) ​ $ 3,581 ​ $ 4,774 ​ $ (1,193) ​ $ 3,581

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Common Share
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	The following table represents the earnings per share calculations for the three and six months ended June 30, 2020 and 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 2020 2019 ​ (in thousands, except share and per share amounts) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income from continuing operations ​ $ 1,849 ​ $ 7,009 ​ $ 3,973 ​ $ 13,449 ​ Net income from discontinued operations ​ — ​ 22,143 ​ — ​ 21,080 ​ Net income available to common shareholders ​ $ 1,849 ​ $ 29,152 ​ $ 3,973 ​ $ 34,529 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares outstanding ​ ​ ​ ​ ​ Basic (1) ​ 21,472,462 ​ 23,888,381 ​ 21,580,855 ​ 24,369,106 ​ Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock options and performance share awards ​ 62,578 ​ 152,425 ​ 107,857 ​ 158,286 ​ Diluted ​ 21,535,040 ​ 24,040,806 ​ 21,688,712 ​ 24,527,392 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income per common share - basic ​ ​ ​ ​ ​ Net income per common share - continuing operations ​ $ 0.09 ​ $ 0.29 ​ $ 0.18 ​ $ 0.55 ​ Net income per common share - discontinued operations ​ — ​ 0.93 ​ — ​ 0.87 ​ Net income per common share - basic ​ $ 0.09 ​ $ 1.22 ​ $ 0.18 ​ $ 1.42 ​ Net income per common share - diluted ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income per common share - continuing operations ​ $ 0.09 ​ $ 0.29 ​ $ 0.18 ​ $ 0.55 ​ Net income per common share - discontinued operations ​ — ​ 0.92 ​ — ​ 0.86 ​ Net income per common share - diluted ​ $ 0.09 ​ $ 1.21 ​ $ 0.18 ​ $ 1.41 ​ (1) Unvested restricted shares are participating securities and included in basic share calculations.

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	6 Months Ended
	Jun. 30, 2020
Derivatives and Hedging
Schedule of Derivative Instruments	The following table reflects the estimated fair value positions of derivative contracts and credit risk participation agreements as of June 30, 2020 and December 31, 2019: Derivatives designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (in thousands) Balance Sheet Notional ​ ​ Notional ​ ​ Interest Rate Products ​ Location ​ Amount ​ Fair Value ​ Amount ​ Fair Value Cash flow hedge of LIBOR based loans Other assets ​ $ 125,000 ​ $ 12,790 ​ $ 125,000 ​ $ 3,578 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedge of LIBOR based loans Other liabilities ​ $ — ​ $ — ​ $ 50,000 ​ $ 8 ​ Derivatives not designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 (in thousands) ​ Balance Sheet ​ Notional ​ ​ ​ Notional ​ ​ Interest Rate Products Location Amount Fair Value Amount Fair Value Customer swap positions ​ Other assets ​ $ 35,861 ​ $ 2,366 ​ $ 44,763 ​ $ 1,025 Zero premium collar ​ Other assets ​ 73,265 ​ 10,521 ​ 74,562 ​ 4,253 ​ ​ ​ ​ $ 109,126 ​ $ 12,887 ​ $ 119,325 ​ $ 5,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Dealer offsets to customer swap positions ​ Other liabilities ​ $ 35,861 ​ $ 2,400 ​ $ 44,763 ​ $ 1,090 Dealer offset to zero premium collar ​ Other liabilities ​ 73,265 ​ 10,601 ​ 74,562 ​ 4,545 Credit risk participation ​ Other liabilities ​ 6,719 ​ 11 ​ 7,657 ​ 4 ​ ​ ​ ​ $ 115,845 ​ $ 13,012 ​ $ 126,982 ​ $ 5,639 The following table presents the effect of the Company’s derivative financial instruments that are not designated as hedging instruments on the Consolidated Statements of Income for the three and six months ended June 30, 2020 and 2019. Derivatives not designated as hedging instruments under ASC 815 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Location of Gain or Amount of Gain or (Loss) ​ Amount of Gain or (Loss) ​ ​ (Loss) Recognized in Recognized in Income on Derivative ​ Recognized in Income on Derivative (in thousands) Income on Derivative Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ 2020 2019 2020 2019 Interest rate products Other income $ 12 ​ $ (231) ​ $ (242) ​ $ (341) Other contracts Other income ​ (2) ​ (2) ​ 6 ​ (3) Total ​ ​ $ 10 ​ $ (233) ​ $ (236) ​ $ (344) ​ The following table reflects the impact to the Consolidated Statements of Income related to derivative contracts for the three and six months ended June 30, 2020 and 2019: Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ Amount of Gain or ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount of Gain or ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) Recognized in ​ Gain or (Loss) Reclassified from ​ (Loss) Recognized in ​ Gain or (Loss) Reclassified from ​ ​ ​ OCI on Derivatives ​ Accumulated OCI in Income ​ OCI on Derivatives ​ Accumulated OCI in Income ​ ​ ​ (Effective Portion) ​ (Effective Portion) ​ (Effective Portion) ​ (Effective Portion) ​ (in thousands) ​ 2020 ​ 2019 ​ Location ​ 2020 ​ 2019 ​ 2020 ​ 2019 ​ Location ​ 2020 ​ 2019 ​ Interest rate swaps $ 3,669 $ 1,823 Interest income $ (510) $ (8) $ 9,268 $ 3,091 Interest income $ (652) $ (129)

Other Borrowings and Long Ter_2

Other Borrowings and Long Term Debt (Tables)	6 Months Ended
	Jun. 30, 2020
Other Borrowings and Long Term Debt
Schedule of Long-term Debt Instruments and Borrowings	Federal Home Loan Bank borrowings as of June 30, 2020 and December 31, 2019 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ Balance Interest Rate Balance Interest Rate ​ ​ (in thousands) FHLB short-term borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed rate advance maturing July 14, 2020 ​ $ 50,000 ​ 0.27 % ​ $ — ​ — % Total ​ $ 50,000 ​ ​ ​ $ — ​ ​ Subordinated debt is summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Floating rate 10 year capital securities, with interest paid semi-annually at an annual fixed rate of 6.25% until September 30, 2020 ​ $ 50,000 ​ $ 50,000 Principal amount of subordinated debt ​ $ 50,000 ​ $ 50,000 Less debt issuance costs ​ 42 ​ 127 Subordinated debt, net ​ $ 49,958 ​ $ 49,873

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2020
Share-Based Compensation
Schedule of Share-based Compensation, Fair Value of Options Assumptions	​ ​ ​ ​ ​ ​ For the six months ended ​ ​ June 30, 2019 Risk‑free interest rate 2.27 % Expected term in years 1.73-1.82 Expected stock price volatility 26.8 % Dividend yield — %
Schedule of Share-based Compensation, Stock Options and Warrants Activity	The following table represents stock option activity for the six months ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Remaining ​ Aggregate ​ ​ ​ ​ ​ Average ​ Contractual Term ​ Intrinsic Value ​ Shares Exercise Price (in years) (in thousands) Outstanding, December 31, 2019 ​ ​ 318,980 ​ $ 11.47 ​ ​ ​ Granted/modified (1) ​ ​ — ​ ​ — ​ ​ ​ Exercised ​ ​ (60,940) ​ ​ 10.82 ​ ​ ​ Forfeited (1) ​ — ​ — ​ Expired ​ (94) ​ 102.12 ​ Outstanding, June 30, 2020 ​ 257,946 ​ $ 11.59 2.06 ​ $ 284 Exercisable, June 30, 2020 ​ 247,946 ​ $ 11.45 1.93 ​ $ 284 (1) During the six months ended June 30, 2020, the Company did not modify any options.
Schedule of Share-based Compensation, Restricted Stock Award Activity	The following table represents restricted stock and performance share award activity for the six months ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average Grant- ​ Shares Date Fair Value Outstanding, December 31, 2019 ​ 292,877 ​ $ 19.00 Granted/modified (1) ​ 142,550 ​ 18.13 Vested ​ (98,991) ​ 17.60 Forfeited ​ (5,661) ​ 18.67 Outstanding, June 30, 2020 ​ 330,775 ​ $ 19.05 ​ (1) During the six months ended June 30, 2020, the Company did not modify any restricted stock awards.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Measurements
Schedule of Fair Value, Assets and Liabilities, Measured on Recurring Basis	The following table presents the assets that were measured at fair value on a recurring basis by level within the fair value hierarchy as reported in the Consolidated Balance Sheets at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at June 30, 2020 Using: ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Securities ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Total ​ ​ (in thousands) Securities available-for-sale: ​ ​ ​ ​ U.S. states and political subdivisions ​ $ — ​ $ 83,142 ​ $ — ​ $ 83,142 Trust preferred securities ​ — ​ 4,375 ​ — ​ 4,375 Corporate debt securities ​ — ​ 19,683 ​ — ​ 19,683 Mortgage-backed securities ​ — ​ 164,629 ​ — ​ 164,629 Total securities available-for-sale ​ $ — ​ $ 271,829 ​ $ — ​ $ 271,829 Interest rate derivative assets ​ $ — ​ $ 25,677 ​ $ — ​ $ 25,677 Interest rate derivative liabilities ​ $ — ​ $ 13,012 ​ $ — ​ $ 13,012 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2019 Using: ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Securities ​ Inputs ​ Inputs ​ ​ ​ ​ ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ Totals ​ ​ (in thousands) Securities available-for-sale: ​ ​ ​ ​ U.S. states and political subdivisions ​ $ — ​ $ 82,485 ​ $ — ​ $ 82,485 Trust preferred securities ​ — ​ 4,688 ​ — ​ 4,688 Corporate debt securities ​ — ​ 19,920 ​ — ​ 19,920 Mortgage-backed securities ​ — ​ 175,368 ​ — ​ 175,368 Total securities available-for-sale ​ $ — ​ $ 282,461 ​ $ — ​ $ 282,461 Interest rate derivative assets ​ $ — ​ $ 8,856 ​ $ — ​ $ 8,856 Interest rate derivative liabilities ​ $ — ​ $ 5,647 ​ $ — ​ $ 5,647
Fair Value Measurements, Nonrecurring	The following table presents the assets that were measured at fair value on a nonrecurring basis by level within the fair value hierarchy as reported in the Consolidated Balance Sheets at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 ​ ​ ​ ​ Fair Value ​ Fair Value ​ Fair Value ​ ​ ​ June 30, 2020 ​ Measurement ​ Measurement ​ Measurement ​ Total ​ ​ (in thousands) Impaired Loans ​ $ — ​ $ — ​ $ 4,680 ​ $ 4,680 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 ​ ​ ​ ​ Fair Value ​ Fair Value ​ Fair Value ​ ​ ​ December 31, 2019 ​ Measurement ​ Measurement ​ Measurement ​ Total ​ ​ (in thousands) Impaired Loans ​ $ — ​ $ — ​ $ 4,288 ​ $ 4,288
Fair Value Measurements, Recurring and Nonrecurring	The following table presents the estimated fair values of Atlantic Capital’s financial instruments at June 30, 2020 and December 31, 2019. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ June 30, 2020 Using: ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ Carrying ​ Securities ​ Inputs ​ Inputs ​ ​ Amount ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ ​ (in thousands) Financial assets: ​ ​ ​ ​ Cash and due from banks ​ $ 33,759 ​ $ 33,759 ​ $ — ​ $ — Interest-bearing deposits in banks ​ 33,038 ​ 33,038 ​ — ​ — Total securities available-for-sale ​ 271,829 ​ — ​ 271,829 ​ — Total securities held-to-maturity ​ ​ 185,920 ​ ​ — ​ ​ 194,662 ​ ​ — FHLB stock ​ 4,744 ​ — ​ — ​ 4,744 Federal Reserve Bank stock ​ 10,029 ​ — ​ — ​ 10,029 Loans held for investment, net ​ 2,184,694 ​ — ​ — ​ 2,211,005 Derivative assets ​ 25,677 ​ — ​ 25,677 ​ — Financial liabilities: ​ ​ ​ ​ Deposits ​ $ 2,407,631 ​ $ — ​ $ 2,373,838 ​ $ — Federal funds purchased ​ 6,000 ​ 6,000 ​ — ​ — Subordinated debt ​ 49,958 ​ — ​ 50,153 ​ — FHLB advances ​ 50,000 ​ — ​ 50,004 ​ — Derivative financial instruments ​ 13,012 ​ — ​ 13,012 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ December 31, 2019 Using: ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ Carrying ​ Securities ​ Inputs ​ Inputs ​ ​ Amount ​ (Level 1) ​ (Level 2) ​ (Level 3) ​ ​ (in thousands) Financial assets: ​ ​ ​ ​ Cash and due from banks ​ $ 45,249 ​ $ 45,249 ​ $ — ​ $ — Interest-bearing deposits in banks ​ ​ 421,079 ​ ​ 421,079 ​ — ​ — Total securities available-for-sale ​ ​ 282,461 ​ ​ — ​ 282,461 ​ — Total securities held-to-maturity ​ ​ 116,972 ​ ​ — ​ ​ 115,291 ​ ​ — FHLB stock ​ ​ 2,680 ​ ​ — ​ — ​ 2,680 Federal Reserve Bank stock ​ ​ 9,998 ​ ​ — ​ — ​ 9,998 Loans held for investment, net ​ ​ 1,873,524 ​ ​ — ​ — ​ 1,890,258 Loans held for sale ​ ​ 370 ​ ​ — ​ 370 ​ — Derivative assets ​ ​ 8,856 ​ ​ — ​ 8,856 ​ — Financial liabilities: ​ ​ ​ ​ ​ ​ ​ Deposits ​ $ 2,499,046 ​ $ — ​ $ 2,421,957 ​ $ — Subordinated debt ​ ​ 49,873 ​ ​ — ​ 50,081 ​ — Derivative financial instruments ​ ​ 5,647 ​ ​ — ​ 5,647 ​ —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies
Schedule of Exposure to Credit Risk By Commitment	Atlantic Capital’s maximum exposure to credit risk for unfunded loan commitments and standby letters of credit at June 30, 2020 and December 31, 2019 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 December 31, 2019 ​ ​ (in thousands) Financial Instruments whose contract amount represents credit risk: ​ ​ Commitments to extend credit ​ $ 739,648 ​ $ 735,905 Standby letters of credit ​ 9,973 ​ 8,053 ​ ​ $ 749,621 ​ $ 743,958 ​ ​ ​ ​ ​ ​ ​ Minimum lease payments ​ $ 18,993 ​ $ 20,055 ​

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue Recognition
Disaggregation of Revenue	The following table presents service charges by type of service provided for the three and six months ended June 30, 2020 and 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended June 30, ​ For the Six Months Ended June 30, ​ ​ 2020 2019 2020 2019 ​ ​ ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ Deposit account analysis fees and charges ​ $ 997 ​ $ 676 ​ $ 1,931 ​ $ 1,222 ​ ATM fees ​ 16 ​ (8) ​ 36 ​ 39 ​ NSF fees ​ 7 ​ 8 ​ 25 ​ 22 ​ Wire fees ​ 15 ​ 102 ​ 148 ​ 212 ​ Foreign exchange fees ​ 43 ​ 92 ​ 169 ​ 165 ​ Other ​ 3 ​ — ​ 4 ​ 4 ​ Total service charges - continuing operations ​ 1,081 ​ 870 ​ 2,313 ​ 1,664 ​ Service charges - discontinued operations ​ — ​ 46 ​ — ​ 527 ​ Total service charges ​ $ 1,081 ​ $ 916 ​ $ 2,313 ​ $ 2,191 ​

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Leases
Lease Cost and Other Information Related to Leases	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ June 30, June 30, ​ 2020 2019 ​ 2020 2019 ​ ​ (in thousands) Operating lease cost ​ $ 592 ​ $ 461 ​ $ 1,186 ​ $ 1,126 Short-term lease cost ​ ​ 6 ​ 12 ​ ​ 15 ​ 26 Sublease income ​ ​ (92) ​ (42) ​ ​ (182) ​ (116) Net lease cost ​ $ 506 ​ $ 431 ​ $ 1,019 ​ $ 1,036 ​ The tables below summarize other information related to the Company’s operating leases: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ June 30, June 30, ​ 2020 2019 2020 2019 ​ ​ (in thousands) Operating cash paid for amounts included in the measurement of lease liabilities ​ $ 565 ​ $ 522 ​ $ 1,125 ​ $ 1,043 Right-of-use assets obtained in exchange for new finance lease liabilities ​ ​ — ​ ​ 716 ​ ​ — ​ ​ 15,207 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, ​ ​ ​ 2020 2019 ​ Weighted-average remaining lease term - operating leases ​ 8.7 years ​ 9.2 years ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average discount rate - operating leases ​ 3.04 % 3.30 % ​
Schedule of Maturity of Lease Liabilities	​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ (in thousands) Twelve Months Ended: ​ ​ ​ June 30, 2021 $ 2,027 June 30, 2022 ​ 2,351 June 30, 2023 ​ 2,244 June 30, 2024 ​ 1,995 March 31, 2025 ​ 1,893 Thereafter ​ 8,483 Total future minimum lease payments ​ 18,993 Less: Interest ​ (3,146) Present value of net future minimum lease payments $ 15,847

Accounting Policies and Basis_3

Accounting Policies and Basis of Presentation (Details)	6 Months Ended
	Jun. 30, 2020USD ($)item	Mar. 31, 2020USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Retained earnings	$ 95,570,000			$ 91,669,000
Allowance for credit losses on unfunded commitments			$ 2,167,000
Allowance for credit losses on loans	31,605,000	$ 24,896,000	17,681,000	$ 18,535,000	$ 18,186,000	$ 18,107,000	$ 17,851,000
Allowance for credit losses on debt securities held-to-maturity	$ 13,000		20,000
Number Of Average Loans In Pool | item	20
Allowance for credit losses, accrued interest receivable on available for sale securities	$ 1,100,000
ASU 2016-13 | Previously Reported
Allowance for credit losses on unfunded commitments			892,000
Allowance for credit losses on loans			18,535,000
ASU 2016-13 | Restatement Adjustment
Retained earnings	$ (72,000,000)		(72,000,000)
Allowance for credit losses on unfunded commitments			1,275,000
Allowance for credit losses on loans			(854,000)
Allowance for credit losses on debt securities held-to-maturity			$ 20,000

Accounting Standards Updates _3

Accounting Standards Updates and Recently Adopted Standards (Details) - USD ($)	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity	$ 13,000		$ 20,000
Allowance for credit losses on loans	31,605,000	$ 24,896,000	17,681,000	$ 18,535,000	$ 18,186,000	$ 18,107,000	$ 17,851,000
Allowance for credit losses on unfunded commitments			2,167,000
Total			19,868,000
Retained earnings	95,570,000			91,669,000
U.S. states and political divisions
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity	13,000			14,000
U.S. states and political divisions - tax-exempt
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity	9,000		13,000	10,000
U.S. states and political divisions - taxable
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity	4,000		7,000	$ 4,000
Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			18,535,000
Allowance for credit losses on unfunded commitments			892,000
Total			19,427,000
Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity			20,000
Allowance for credit losses on loans			(854,000)
Allowance for credit losses on unfunded commitments			1,275,000
Total			441,000
Retained earnings	$ (72,000,000)		(72,000,000)
Restatement Adjustment | ASU 2016-13 | U.S. states and political divisions - tax-exempt
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity			13,000
Restatement Adjustment | ASU 2016-13 | U.S. states and political divisions - taxable
Item Effected [Line Items]
Allowance for credit losses on debt securities held-to-maturity			7,000
Commercial and industrial
Item Effected [Line Items]
Allowance for credit losses on loans			8,578,000
Commercial and industrial | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			9,015,000
Commercial and industrial | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			(437,000)
Commercial real estate
Item Effected [Line Items]
Allowance for credit losses on loans			6,868,000
Commercial real estate | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			7,504,000
Commercial real estate | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			(636,000)
Construction and land
Item Effected [Line Items]
Allowance for credit losses on loans			1,819,000
Construction and land | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			1,685,000
Construction and land | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			134,000
Residential mortgages
Item Effected [Line Items]
Allowance for credit losses on loans			108,000
Residential mortgages | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			81,000
Residential mortgages | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			27,000
Home equity
Item Effected [Line Items]
Allowance for credit losses on loans			121,000
Home equity | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			63,000
Home equity | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			58,000
Consumer
Item Effected [Line Items]
Allowance for credit losses on loans			101,000
Consumer | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			42,000
Consumer | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			59,000
Other
Item Effected [Line Items]
Allowance for credit losses on loans			78,000
Other | Previously Reported | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			145,000
Other | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			(67,000)
Mortgage warehouse
Item Effected [Line Items]
Allowance for credit losses on loans			8,000
Mortgage warehouse | Restatement Adjustment | ASU 2016-13
Item Effected [Line Items]
Allowance for credit losses on loans			$ 8,000

Acquisitions and Divestitures_2

Acquisitions and Divestitures (Narrative) (Details) $ in Thousands	Apr. 05, 2019USD ($)item	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets related to discontinued operations		$ 0	$ 0
Liabilities related to discontinued operations		$ 0	$ 0
Branch Sale | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of branches sold | item	14
Deposits and customer repurchase agreements assumed by buyer	$ 598,000
Amount of loans purchased by buyer	$ 385,000
Deposit premium paid (as a percent)	6.25%
Discount of purchased loans (as a percent)	0.68%

Acquisitions and Divestitures -

Acquisitions and Divestitures - Components of Net Income from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income before provision for income taxes	$ 30,107	$ 28,690
Provision for income taxes	7,964	7,610
Net income from discontinued operations	22,143	21,080
Branch Sale | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income (loss)	(39)	3,086
Service charges	46	527
Mortgage income		288
Gain on sale of branches	34,475	34,475
Other income	(22)	(1)
Total noninterest income	34,499	35,289
Salaries and employee benefits	330	2,757
Occupancy	71	410
Equipment and software	8	131
Amortization of intangibles		247
Communications and data processing	197	586
Divestiture expense	3,646	5,095
Other noninterest expense	101	459
Total noninterest expense	4,353	9,685
Net income before provision for income taxes	30,107	28,690
Provision for income taxes	7,964	7,610
Net income from discontinued operations	$ 22,143	$ 21,080

Balance Sheet Offsetting (Detai

Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivatives, Assets
Gross Amounts of Recognized Assets	$ 25,677	$ 8,856
Net Asset Balance	25,677	8,856
Net Amount	25,677	8,856
Total, Assets
Gross Amounts of Recognized Assets	25,677	8,856
Net Asset Balance	25,677	8,856
Net Amount	25,677	8,856
Derivatives, Liabilities
Gross Amounts of Recognized Liabilities	13,012	5,647
Net Liability Balance	13,012	5,647
Financial Instruments	(13,012)	(5,647)
Total, Liabilities
Gross Amounts of Recognized Liabilities	13,012	5,647
Net Liability Balance	13,012	5,647
Financial Instruments	$ (13,012)	$ (5,647)

Securities - Available-For-Sale

Securities - Available-For-Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
Available-For-Sale
Amortized Cost	$ 262,919		$ 279,277
Gross Unrealized Gains	9,537		4,023
Gross Unrealized Losses	(627)		(839)
Fair Value	271,829		282,461
Held-to-Maturity
Amortized Cost	185,933		116,972
Gross Unrealized Gains	8,795		104
Gross Unrealized Losses	(66)		(1,785)
Fair Value	194,662		115,291
Allowance for credit losses on debt securities held-to-maturity	(13)	$ (20)
Investment securities held to maturity, net of allowance for credit losses of $13 at June 30, 2020	185,920		116,972
Total securities
Amortized Cost	448,852		396,249
Gross Unrealized Gains	18,332		4,127
Gross Unrealized Losses	(693)		(2,624)
Fair Value	466,491		397,752
U.S. states and political divisions
Available-For-Sale
Amortized Cost	80,744		81,865
Gross Unrealized Gains	2,411		863
Gross Unrealized Losses	(13)		(243)
Fair Value	83,142		82,485
Held-to-Maturity
Amortized Cost	185,933		116,972
Gross Unrealized Gains	8,795		104
Gross Unrealized Losses	(66)		(1,785)
Fair Value	194,662		115,291
Allowance for credit losses on debt securities held-to-maturity	(13)		(14)
Investment securities held to maturity, net of allowance for credit losses of $13 at June 30, 2020	185,920
Trust preferred securities
Available-For-Sale
Amortized Cost	4,821		4,808
Gross Unrealized Losses	(446)		(120)
Fair Value	4,375		4,688
Corporate debt securities
Available-For-Sale
Amortized Cost	19,541		19,557
Gross Unrealized Gains	294		363
Gross Unrealized Losses	(152)
Fair Value	19,683		19,920
Residential mortgage-backed securities
Available-For-Sale
Amortized Cost	157,813		173,047
Gross Unrealized Gains	6,832		2,797
Gross Unrealized Losses	(16)		(476)
Fair Value	$ 164,629		$ 175,368

Securities - Allowance for cred

Securities - Allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Allowance for credit losses:
Ending Balance	$ 13	$ 13
U.S. states and political divisions
Allowance for credit losses:
Beginning Balance		14
Provision for credit losses	(1)	(7)
Ending Balance	13	13
U.S. states and political divisions - tax-exempt
Allowance for credit losses:
Beginning Balance		10
Provision for credit losses	(1)	(4)
Ending Balance	9	9
U.S. states and political divisions - taxable
Allowance for credit losses:
Beginning Balance		4
Provision for credit losses		(3)
Ending Balance	$ 4	4
ASU 2016-13 | U.S. states and political divisions
Allowance for credit losses:
Impact of adopting ASU 2016-13		20
ASU 2016-13 | U.S. states and political divisions - tax-exempt
Allowance for credit losses:
Impact of adopting ASU 2016-13		13
ASU 2016-13 | U.S. states and political divisions - taxable
Allowance for credit losses:
Impact of adopting ASU 2016-13		$ 7

Securities - Amortized cost of

Securities - Amortized cost of debt securities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	$ 185,933	$ 116,972
Moody's, Aa1 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	40,069
Moody's, Aa2 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	53,044
Moody's, Aa3 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	23,499
Moody's, Aaa Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	69,321
U.S. states and political divisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	185,933	$ 116,972
U.S. states and political divisions - tax-exempt
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	132,496
U.S. states and political divisions - tax-exempt | Moody's, Aa1 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	32,321
U.S. states and political divisions - tax-exempt | Moody's, Aa2 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	32,173
U.S. states and political divisions - tax-exempt | Moody's, Aa3 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	19,452
U.S. states and political divisions - tax-exempt | Moody's, Aaa Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	48,550
U.S. states and political divisions - taxable
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	53,437
U.S. states and political divisions - taxable | Moody's, Aa1 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	7,748
U.S. states and political divisions - taxable | Moody's, Aa2 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	20,871
U.S. states and political divisions - taxable | Moody's, Aa3 Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	4,047
U.S. states and political divisions - taxable | Moody's, Aaa Rating [Member]
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Total securities held to maturity	$ 20,771

Securities - Contractual Maturi

Securities - Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Available-For-Sale, Amortized Cost
Within 1 year	$ 6,030
Over 1 year through 5 years	4,536
5 years to 10 years	36,260
Over 10 years	58,280
Amortized cost of securities with single maturity date	105,106
Residential mortgage-backed securities	157,813
Amortized Cost	262,919	$ 279,277
Available-For-Sale, Fair Value
Within 1 year	6,182
Over 1 year through 5 years	4,712
5 years to 10 years	36,564
Over 10 years	59,742
Fair value of securities with single maturity date	107,200
Residential mortgage-backed securities	164,629
Fair Value	271,829	282,461
Held-to-Maturity, Amortized Cost
5 years to 10 years	318
Over 10 years	185,615
Amortized cost of securities with single maturity date	185,933
Amortized Cost	185,933	116,972
Held-to-Maturity, Fair Value
5 years to 10 years	319
Over 10 years	194,343
Fair value of securities with single maturity date	194,662
Fair Value	$ 194,662	$ 115,291

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Available-for-Sale, Fair Value
Less than 12 months	$ 11,825	$ 30,770
12 months or greater, fair value	6,347	39,069
Totals	18,172	69,839
Available-for-Sale, Unrealized Losses
Less than 12 months	(165)	(268)
12 months or greater	(462)	(571)
Totals	(627)	(839)
Held-to-Maturity, Fair Value
Less than 12 months	16,333	96,854
Totals	16,333	96,854
Held-to-Maturity, Unrealized Losses
Less than 12 months	(66)	(1,785)
Totals	(66)	(1,785)
Total securities - Fair Value
Less than 12 months	28,158	127,624
12 months or greater	6,347	39,069
Totals	34,505	166,693
Total securities - Unrealized losses
Less than 12 months	(231)	(2,053)
12 months or greater	(462)	(571)
Totals	(693)	(2,624)
U.S. states and political divisions
Available-for-Sale, Fair Value
Less than 12 months	1,977	20,019
12 months or greater, fair value		4,090
Totals	1,977	24,109
Available-for-Sale, Unrealized Losses
Less than 12 months	(13)	(190)
12 months or greater		(53)
Totals	(13)	(243)
Held-to-Maturity, Fair Value
Less than 12 months	16,333	96,854
Totals	16,333	96,854
Held-to-Maturity, Unrealized Losses
Less than 12 months	(66)	(1,785)
Totals	(66)	(1,785)
Trust preferred securities
Available-for-Sale, Fair Value
12 months or greater, fair value	4,375	4,687
Totals	4,375	4,687
Available-for-Sale, Unrealized Losses
12 months or greater	(446)	(120)
Totals	(446)	(120)
Corporate debt securities
Available-for-Sale, Fair Value
Less than 12 months	9,848
Totals	9,848
Available-for-Sale, Unrealized Losses
Less than 12 months	(152)
Totals	(152)
Residential mortgage-backed securities
Available-for-Sale, Fair Value
Less than 12 months		10,751
12 months or greater, fair value	1,972	30,292
Totals	1,972	41,043
Available-for-Sale, Unrealized Losses
Less than 12 months		(78)
12 months or greater	(16)	(398)
Totals	$ (16)	$ (476)

Securities - Narrative (Details

Securities - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)security	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)security	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)security
Securities
Number of available-for-sale securities in unrealized loss position | security	6		6		77
Number of held for maturity securities in unrealized loss position | security	8		8		35
Carrying value of investment securities pledged to secure public funds and other borrowings	$ 31,200	$ 32,300	$ 31,200	$ 32,300
Investment securities available for sale	271,829		271,829		$ 282,461
Interest Receivable	2,000		2,000		796
Debt securities classified as non-accrual	0		0
Debt securities classified as past due over 89 days and still accruing	0		0
Proceeds from sales		54,938		54,938
Impairment of securities in unrealized loss position	0	$ 0	0	0
Impairments on SBICs				26
SBIC Investments
Securities
Investment securities available for sale	$ 5,100		5,100		$ 4,700
Impairments on SBICs			$ 0	$ 26

Securities - Realized Gains (Lo

Securities - Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Securities
Proceeds from sales	$ 54,938	$ 54,938
Gross realized gains	1,122	1,122
Gross realized losses	(468)	(468)
Net gains (losses) on sales of securities	$ 654	$ 654

Loans and Allowance for credi_2

Loans and Allowance for credit losses - Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale - continuing operations	$ 1,153			$ 370
Total loans held for sale	1,153			370
Loans held for investment	2,194,455			1,876,558
Less net deferred fees and other unearned income	(9,761)			(3,034)
Less allowance for credit losses on loans	(31,605)	$ (24,896)	$ (17,681)	(18,535)	$ (18,186)	$ (18,107)	$ (17,851)
Loans held for investment, net	2,153,089			1,854,989
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for credit losses on loans			(6,868)
Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for credit losses on loans			(1,819)
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for credit losses on loans			(8)
Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for credit losses on loans			(108)
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for credit losses on loans			(121)
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	22,160			19,552
Less allowance for credit losses on loans			$ (78)
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	2,003,130			1,762,924
Less allowance for credit losses on loans	(30,834)	(23,830)		(18,203)	(17,817)	(17,397)	(17,322)
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	973,818			705,115
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	900,321			916,328
Commercial | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	128,991			127,540
Commercial | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment				13,941
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	56,016			56,317
Less allowance for credit losses on loans	(517)	(415)		(145)	(164)	(447)	(292)
Residential | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment				13,941
Residential | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	32,327			31,315
Residential | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	23,689			25,002
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	113,149			37,765
Less allowance for credit losses on loans	(254)	$ (651)		(187)	$ (205)	$ (263)	$ (237)
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 22,160			$ 57,317

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)loan	Jun. 30, 2019USD ($)loan	Jun. 30, 2020USD ($)loan	Jun. 30, 2019USD ($)loan	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 358,900,000		$ 358,900,000		$ 729,600,000
Remaining accretable fair value discount	313,000		313,000		279,000
Recorded investment in TDRs	14,600,000		14,600,000		13,200,000
Allowance for loans	793,000		793,000
Accrued interest	2,000,000		$ 2,000,000		796,000
Number of loans | loan		3	2	8
Interest income on nonaccrual loans	51,000	$ 105,000	$ 82,000	$ 168,000
Other assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest	9,300,000		9,300,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in TDRs	$ 320,000		$ 320,000
Number of loans modified under TDR | loan	2		2
Interest income on nonaccrual loans			$ 2,481,000
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commitments to lend additional funds	$ 0		$ 0		$ 4,000
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan		3	1	6
Interest income on nonaccrual loans			$ 2,481,000

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses - Allowance Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, prior to adoption of ASC 326	$ 24,896	$ 18,107	$ 18,535	$ 17,851
Provision for credit losses	8,222	698	15,631	1,512
Loans charged-off	(1,515)	(635)	(1,736)	(1,230)
Recoveries	2	16	29	53
Total ending allowance balance	31,605	18,186	31,605	18,186
Restatement Adjustment | ASU 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Impact of adoption of ASC 326			(854)
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, prior to adoption of ASC 326	23,830	17,397	18,203	17,322
Provision for credit losses	8,482	1,055	15,134	1,662
Loans charged-off	(1,479)	(635)	(1,575)	(1,184)
Recoveries	1		19	17
Total ending allowance balance	30,834	17,817	30,834	17,817
Commercial | Restatement Adjustment | ASU 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Impact of adoption of ASC 326			(947)
Residential
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, prior to adoption of ASC 326	415	447	145	292
Provision for credit losses	138	(283)	524	(127)
Loans charged-off	(36)		(161)	(9)
Recoveries			1	8
Total ending allowance balance	517	164	517	164
Residential | Restatement Adjustment | ASU 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Impact of adoption of ASC 326			8
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, prior to adoption of ASC 326	651	263	187	237
Provision for credit losses	(398)	(74)	(27)	(23)
Loans charged-off				(37)
Recoveries	1	16	9	28
Total ending allowance balance	$ 254	$ 205	254	$ 205
Consumer | Restatement Adjustment | ASU 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Impact of adoption of ASC 326			$ 85

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)loan	Jun. 30, 2020USD ($)loan	Jun. 30, 2019USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan		3	2	8
Pre-Modification Outstanding Recorded Investment		$ 382	$ 2,012	$ 2,161
Post-Modification Outstanding Recorded Investment		$ 382	2,012	$ 2,161
Commercial
Financing Receivable, Modifications [Line Items]
Decrease in allowance for credit losses as a result of the TDRs that subsequently defaulted	$ 20		$ 20
Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans | loan		3	1	6
Pre-Modification Outstanding Recorded Investment		$ 382	$ 67	$ 1,235
Post-Modification Outstanding Recorded Investment		$ 382	$ 67	$ 1,235
Commercial | Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan			1	2
Pre-Modification Outstanding Recorded Investment			$ 1,945	$ 926
Post-Modification Outstanding Recorded Investment			$ 1,945	$ 926

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses - Risk Category of Loan by Class of Loan (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
2020	$ 409,439
2019	426,646
2018	335,381
2017	169,921
2016	200,381
Prior	384,213
Revolving Loans Amortized Cost Basis	268,474
Total	2,194,455	$ 1,876,558
Accruing Current	2,181,275	1,863,129
Financing Receivable, Nonaccrual	5,930	7,208
Financing Receivable, before Allowance for Credit Loss	2,194,455	1,876,558
Other
Financing Receivable, Impaired [Line Items]
Total	22,160	19,552
Pass
Financing Receivable, Impaired [Line Items]
2020	408,742
2019	388,807
2018	299,008
2017	160,860
2016	188,763
Prior	356,995
Revolving Loans Amortized Cost Basis	233,534
Total	2,036,709	1,793,033
Special Mention
Financing Receivable, Impaired [Line Items]
2020	697
2019	24,036
2018	29,660
2017	3,386
2016	10,533
Prior	4,570
Revolving Loans Amortized Cost Basis	30,546
Total	103,428	46,162
Substandard
Financing Receivable, Impaired [Line Items]
2019	13,461
2018	6,713
2017	5,675
2016	1,085
Prior	22,952
Revolving Loans Amortized Cost Basis	4,394
Total	54,280
Substandard | Accruing Loans
Financing Receivable, Impaired [Line Items]
Total		30,155
Substandard | Nonaccruing Loans
Financing Receivable, Impaired [Line Items]
Total		7,104
Doubtful Nonaccruing
Financing Receivable, Impaired [Line Items]
2019	342
Prior	(304)
Total	38	104
Commercial
Financing Receivable, Impaired [Line Items]
Total	2,003,130	1,762,924
Financing Receivable, Nonaccrual	5,930
Commercial | Commercial and industrial
Financing Receivable, Impaired [Line Items]
2020	322,442
2019	168,231
2018	140,930
2017	54,086
2016	39,943
Prior	25,046
Revolving Loans Amortized Cost Basis	223,140
Total	973,818	705,115
Accruing Current	967,048	695,026
Financing Receivable, Nonaccrual	5,658	5,990
Financing Receivable, before Allowance for Credit Loss	973,818	705,115
Commercial | Commercial real estate
Financing Receivable, Impaired [Line Items]
2020	48,120
2019	184,407
2018	148,763
2017	110,456
2016	150,447
Prior	249,101
Revolving Loans Amortized Cost Basis	9,027
Total	900,321	916,328
Accruing Current	899,800	914,787
Financing Receivable, Nonaccrual	157	262
Financing Receivable, before Allowance for Credit Loss	900,321	916,328
Commercial | Construction and land
Financing Receivable, Impaired [Line Items]
2020	34,958
2019	61,686
2018	24,113
2016	4,407
Prior	1,982
Revolving Loans Amortized Cost Basis	1,845
Total	128,991	127,540
Accruing Current	128,991	127,540
Financing Receivable, Nonaccrual	5,815
Financing Receivable, before Allowance for Credit Loss	128,991	127,540
Commercial | Residential mortgages
Financing Receivable, Impaired [Line Items]
Financing Receivable, Nonaccrual	115
Commercial | Mortgage warehouse
Financing Receivable, Impaired [Line Items]
Total		13,941
Accruing Current		13,941
Financing Receivable, before Allowance for Credit Loss		13,941
Commercial | Pass | Commercial and industrial
Financing Receivable, Impaired [Line Items]
2020	322,442
2019	160,555
2018	112,710
2017	50,353
2016	38,884
Prior	18,496
Revolving Loans Amortized Cost Basis	188,250
Total	891,690	648,895
Commercial | Pass | Commercial real estate
Financing Receivable, Impaired [Line Items]
2020	48,120
2019	169,996
2018	141,651
2017	106,354
2016	139,914
Prior	228,636
Revolving Loans Amortized Cost Basis	8,977
Total	843,648	891,078
Commercial | Pass | Construction and land
Financing Receivable, Impaired [Line Items]
2020	34,958
2019	52,732
2018	24,113
2016	4,407
Prior	1,982
Revolving Loans Amortized Cost Basis	1,845
Total	120,037	127,540
Commercial | Special Mention | Commercial and industrial
Financing Receivable, Impaired [Line Items]
2019	5,405
2018	23,277
2017	1,519
Prior	349
Revolving Loans Amortized Cost Basis	30,546
Total	61,096	40,179
Commercial | Special Mention | Commercial real estate
Financing Receivable, Impaired [Line Items]
2019	2,879
2018	5,521
2017	1,099
2016	10,533
Prior	4,221
Total	24,253	5,483
Commercial | Special Mention | Construction and land
Financing Receivable, Impaired [Line Items]
2019	8,954
Total	8,954
Commercial | Substandard | Commercial and industrial
Financing Receivable, Impaired [Line Items]
2019	1,929
2018	4,943
2017	2,214
2016	1,059
Prior	6,505
Revolving Loans Amortized Cost Basis	4,344
Total	20,994
Commercial | Substandard | Commercial real estate
Financing Receivable, Impaired [Line Items]
2019	11,532
2018	1,591
2017	3,003
Prior	16,244
Revolving Loans Amortized Cost Basis	50
Total	32,420
Commercial | Substandard | Accruing Loans | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total		10,051
Commercial | Substandard | Accruing Loans | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total		19,504
Commercial | Substandard | Nonaccruing Loans | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total		5,990
Commercial | Substandard | Nonaccruing Loans | Commercial real estate
Financing Receivable, Impaired [Line Items]
Total		263
Commercial | Doubtful Nonaccruing | Commercial and industrial
Financing Receivable, Impaired [Line Items]
2019	342
Prior	(304)
Total	38
Residential
Financing Receivable, Impaired [Line Items]
Total	56,016	56,317
Residential | Residential mortgages
Financing Receivable, Impaired [Line Items]
2020	3,669
2019	3,241
2018	16,728
2017	2,745
2016	5,282
Prior	435
Revolving Loans Amortized Cost Basis	227
Total	32,327	31,315
Accruing Current	29,814	30,352
Financing Receivable, Nonaccrual	115	256
Financing Receivable, before Allowance for Credit Loss	32,327	31,315
Residential | Home equity
Financing Receivable, Impaired [Line Items]
Revolving Loans Amortized Cost Basis	23,689
Total	23,689	25,002
Accruing Current	23,689	24,302
Financing Receivable, Nonaccrual		700
Financing Receivable, before Allowance for Credit Loss	23,689	25,002
Residential | Mortgage warehouse
Financing Receivable, Impaired [Line Items]
Total		13,941
Residential | Pass | Residential mortgages
Financing Receivable, Impaired [Line Items]
2020	2,972
2019	3,241
2018	15,687
2017	1,977
2016	5,256
Prior	232
Revolving Loans Amortized Cost Basis	227
Total	29,592	30,941
Residential | Pass | Home equity
Financing Receivable, Impaired [Line Items]
Revolving Loans Amortized Cost Basis	23,689
Total	23,689	24,302
Residential | Pass | Mortgage warehouse
Financing Receivable, Impaired [Line Items]
Total		13,941
Residential | Special Mention | Residential mortgages
Financing Receivable, Impaired [Line Items]
2020	697
2018	862
2017	768
Total	2,327
Residential | Substandard | Residential mortgages
Financing Receivable, Impaired [Line Items]
2018	179
2016	26
Prior	203
Total	408
Residential | Substandard | Accruing Loans | Residential mortgages
Financing Receivable, Impaired [Line Items]
Total		119
Residential | Substandard | Nonaccruing Loans | Residential mortgages
Financing Receivable, Impaired [Line Items]
Total		151
Residential | Substandard | Nonaccruing Loans | Home equity
Financing Receivable, Impaired [Line Items]
Total		700
Residential | Doubtful Nonaccruing | Residential mortgages
Financing Receivable, Impaired [Line Items]
Total		104
Consumer
Financing Receivable, Impaired [Line Items]
2020	250
2019	2,283
2018	53
2017	64
2016	70
Prior	106,865
Revolving Loans Amortized Cost Basis	3,564
Total	113,149	37,765
Consumer | Other
Financing Receivable, Impaired [Line Items]
2019	6,798
2018	4,794
2017	2,570
2016	232
Prior	784
Revolving Loans Amortized Cost Basis	6,982
Total	22,160	57,317
Accruing Current	131,933	57,181
Financing Receivable, before Allowance for Credit Loss	135,309	57,317
Consumer | Pass
Financing Receivable, Impaired [Line Items]
2020	250
2019	2,283
2018	53
2017	64
2016	70
Prior	106,865
Revolving Loans Amortized Cost Basis	3,564
Total	113,149
Consumer | Pass | Other
Financing Receivable, Impaired [Line Items]
2018	4,794
2017	2,112
2016	232
Prior	784
Revolving Loans Amortized Cost Basis	6,982
Total	14,904	56,336
Consumer | Special Mention | Other
Financing Receivable, Impaired [Line Items]
2019	6,798
Total	6,798	500
Consumer | Substandard | Other
Financing Receivable, Impaired [Line Items]
2017	458
Total	$ 458
Consumer | Substandard | Accruing Loans | Other
Financing Receivable, Impaired [Line Items]
Total		$ 481

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Nonaccrual with Allowance for Credit Losses	$ 51,000	$ 105,000	$ 82,000	$ 168,000
Nonaccruing	5,930,000		5,930,000		$ 7,208,000
Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual with no Allowance for Credit Losses	3,449,000		3,449,000
Nonaccrual with Allowance for Credit Losses			2,481,000
Nonaccruing	5,930,000		5,930,000
Loans Past Due Over 89 Days Still Accruing	335,000		335,000
Commercial and industrial | Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual with no Allowance for Credit Losses	3,177,000		3,177,000
Nonaccrual with Allowance for Credit Losses			2,481,000
Nonaccruing	5,658,000		5,658,000		5,990,000
Commercial real estate | Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual with no Allowance for Credit Losses	157,000		157,000
Nonaccruing	157,000		157,000		$ 262,000
Construction and land | Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual with no Allowance for Credit Losses	3,334,000		3,334,000
Nonaccrual with Allowance for Credit Losses			2,481,000
Nonaccruing	5,815,000		5,815,000
Residential mortgages | Commercial
Financing Receivable, Impaired [Line Items]
Nonaccrual with no Allowance for Credit Losses	115,000		115,000
Nonaccruing	115,000		115,000
Loans Past Due Over 89 Days Still Accruing	$ 335,000		$ 335,000

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses - Collateral dependent impaired loans (Details) $ in Thousands	Jun. 30, 2020USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 4,908
Real property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,587
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	653
Business assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	192
SBA Guaranty-75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,476
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,636
Commercial and industrial | Real property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,424
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	544
Commercial and industrial | Business assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	192
Commercial and industrial | SBA Guaranty-75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,476
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	157
Commercial real estate | Real property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	48
Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	109
Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,793
Construction and land | Real property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,472
Construction and land | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	653
Construction and land | Business assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	192
Construction and land | SBA Guaranty-75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,476
Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	115
Residential mortgages | Real property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 115

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses - Financing Receivables Past Due (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Nonaccruing	$ 5,930	$ 7,208
Total Past Due and Accruing	13,180	13,429
Not Past Due	2,181,275	1,863,129
Total	2,194,455	1,876,558
Financial Receivable 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	5,344	6,106
Financial Receivable 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	1,571	30
Financing Receivables Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due	335	85
Commercial
Financing Receivable, Past Due [Line Items]
Nonaccruing	5,930
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Nonaccruing	5,658	5,990
Total Past Due and Accruing	6,770	10,089
Not Past Due	967,048	695,026
Total	973,818	705,115
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Nonaccruing	157	262
Total Past Due and Accruing	521	1,541
Not Past Due	899,800	914,787
Total	900,321	916,328
Commercial | Construction and land
Financing Receivable, Past Due [Line Items]
Nonaccruing	5,815
Total Past Due and Accruing		0
Not Past Due	128,991	127,540
Total	128,991	127,540
Commercial | Residential mortgages
Financing Receivable, Past Due [Line Items]
Nonaccruing	115
Commercial | Mortgage warehouse
Financing Receivable, Past Due [Line Items]
Total Past Due and Accruing		0
Not Past Due		13,941
Total		13,941
Commercial | Financial Receivable 30 to 59 Days Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	828	4,069
Commercial | Financial Receivable 30 to 59 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due		1,194
Commercial | Financial Receivable 60 to 89 Days Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	284	30
Commercial | Financial Receivable 60 to 89 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	364	0
Commercial | Financial Receivable 60 to 89 Days Past Due | Construction and land
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial | Financial Receivable 60 to 89 Days Past Due | Mortgage warehouse
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial | Financing Receivables Greater Than 89 Days Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial | Financing Receivables Greater Than 89 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due		85
Commercial | Financing Receivables Greater Than 89 Days Past Due | Construction and land
Financing Receivable, Past Due [Line Items]
Past due		0
Commercial | Financing Receivables Greater Than 89 Days Past Due | Mortgage warehouse
Financing Receivable, Past Due [Line Items]
Past due		0
Residential | Residential mortgages
Financing Receivable, Past Due [Line Items]
Nonaccruing	115	256
Total Past Due and Accruing	2,513	963
Not Past Due	29,814	30,352
Total	32,327	31,315
Residential | Home equity
Financing Receivable, Past Due [Line Items]
Nonaccruing		700
Total Past Due and Accruing		700
Not Past Due	23,689	24,302
Total	23,689	25,002
Residential | Financial Receivable 30 to 59 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Past due	2,063	707
Residential | Financial Receivable 60 to 89 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Past due		0
Residential | Financial Receivable 60 to 89 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Past due		0
Residential | Financing Receivables Greater Than 89 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Past due	335	0
Residential | Financing Receivables Greater Than 89 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Past due		0
Consumer | Other
Financing Receivable, Past Due [Line Items]
Total Past Due and Accruing	3,376	136
Not Past Due	131,933	57,181
Total	135,309	57,317
Consumer | Financial Receivable 30 to 59 Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Past due	2,453	136
Consumer | Financial Receivable 60 to 89 Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Past due	$ 923	0
Consumer | Financing Receivables Greater Than 89 Days Past Due | Other
Financing Receivable, Past Due [Line Items]
Past due		$ 0

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses - Purchase and Sale of loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
SBA Sales	$ 11,539	$ 17,938
Total Loans	11,539	17,938
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
SBA Sales	10,205	16,169
Total Loans	10,205	16,169
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
SBA Sales	1,334	1,492
Total Loans	$ 1,334	1,492
Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
SBA Sales		277
Total Loans		$ 277

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Goodwill and Intangible Assets
Goodwill impairment	$ 1,765	$ 1,765

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill
Balance, beginning of period	$ 19,925	$ 21,690	$ 19,925	$ 21,690
Amortization
Impairment, due to Branch Sale		(1,765)		(1,765)
Balance, end of period	19,925	19,925	19,925	19,925
Core Deposit Intangible
Amortization				(247)
Total
Balance, beginning of period	19,925	22,848	19,925	23,095
Amortization				(247)
Goodwill and core deposit intangible, Impairment		(2,923)		(2,923)
Balance, end of period	19,925	19,925	19,925	19,925
Core Deposit Intangible
Core Deposit Intangible
Balance, beginning of period
Amortization				(247)
Impairment, due to Branch Sale		(1,158)		(1,158)
Balance, end of period		1,158		1,405
Total
Amortization				$ (247)

Servicing Assets - Narrative (D

Servicing Assets - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Servicing Assets
Loans sold and serviced	$ 181.5	$ 185.5

Servicing Assets - Changes in t

Servicing Assets - Changes in the Balance of Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
TriNet Servicing Assets
Loan Servicing Rights
Beginning carrying value, net	$ 262	$ 406	$ 296	$ 444
Amortization	(34)	(37)	(68)	(75)
Ending carrying value	228	369	228	369
SBA Loan Servicing Assets
Loan Servicing Rights
Beginning carrying value, net	2,523	2,677	2,731	2,539
Additions	197	327	302	625
Amortization	(217)	(278)	(530)	(438)
Ending carrying value	$ 2,503	$ 2,726	$ 2,503	$ 2,726

Servicing Assets - Sensitivity

Servicing Assets - Sensitivity of the Fair Value to Immediate Changes in Key Economic Assumptions (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
TriNet Servicing Assets
Loan Servicing Assets
Fair value of retained servicing assets	$ 379	$ 414
Weighted average life	5 years 1 month 6 days	5 years 6 months 29 days
Prepayment speed (as a percent)	5.00%	5.00%
Decline in fair value due to a 10% adverse change	$ (4)	$ (5)
Decline in fair value due to a 20% adverse change	$ (8)	$ (10)
Weighted average discount rate	8.00%	8.00%
Decline in fair value due to a 100 bps adverse change	$ (8)	$ (9)
Decline in fair value due to a 200 bps adverse change	(15)	(18)
SBA Loan Servicing Assets
Loan Servicing Assets
Fair value of retained servicing assets	$ 2,654	$ 2,842
Weighted average life	3 years 3 months 14 days	3 years 9 months 7 days
Prepayment speed (as a percent)	17.49%	14.87%
Decline in fair value due to a 10% adverse change	$ (97)	$ (150)
Decline in fair value due to a 20% adverse change	$ (202)	$ (254)
Weighted average discount rate	12.78%	13.66%
Decline in fair value due to a 100 bps adverse change	$ (39)	$ (98)
Decline in fair value due to a 200 bps adverse change	$ (93)	$ (156)

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pre-Tax Amount
Reclassification adjustment for net realized (gains) losses on investment securities available-for-sale		$ (654)		$ (654)
Income Tax (Expense) Benefit
Reclassification adjustment for net realized losses on investment securities available-for-sale		164		164
After-Tax Amount
Beginning balance	$ 332,300	320,627	$ 326,495	323,653
Reclassification adjustment for net realized losses on investment securities available-for-sale		(490)		(490)
Other comprehensive income, net of tax	1,544	6,491	11,329	13,886
Ending balance	335,980	336,715	335,980	336,715
Accumulated Other Comprehensive Income (Loss)
Pre-Tax Amount
Beginning balance	19,057	(3,882)	6,081	(13,743)
Ending balance	21,108	4,774	21,108	4,774
Income Tax (Expense) Benefit
Beginning balance	(4,711)	972	(1,520)	3,438
Ending balance	(5,218)	(1,193)	(5,218)	(1,193)
After-Tax Amount
Beginning balance	14,346	(2,910)	4,561	(10,305)
Ending balance	15,890	3,581	15,890	3,581
Accumulated Net Investment Gain (Loss) from Available-for-Sale Securities
Pre-Tax Amount
Unrealized net gains (losses) on investment securities available-for-sale	1,331	6,090	5,726	14,562
Income Tax (Expense) Benefit
Unrealized net gains (losses) on investment securities available-for-sale	(329)	(1,524)	(1,407)	(3,642)
After-Tax Amount
Unrealized net gains (losses) on investment securities available-for-sale	1,002	4,566	4,319	10,920
Derivatives
Pre-Tax Amount
Unrealized net gains (losses) on derivatives	720	3,220	9,301	4,609
Income Tax (Expense) Benefit
Unrealized net gains (losses) on derivatives	(178)	(805)	(2,291)	(1,153)
After-Tax Amount
Other comprehensive income, net of tax	$ 542	$ 2,415	$ 7,010	$ 3,456

Earnings Per Common Share - Com

Earnings Per Common Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Common Share
Net income from continuing operations	$ 1,849	$ 7,009	$ 3,973	$ 13,449
Net income from discontinued operations		22,143		21,080
Net income available to common shareholders	$ 1,849	$ 29,152	$ 3,973	$ 34,529
Weighted average shares outstanding
Basic (in shares)	21,472,462	23,888,381	21,580,855	24,369,106
Effect of dilutive securities:
Stock options and performance share awards (in shares)	62,578	152,425	107,857	158,286
Diluted (in shares)	21,535,040	24,040,806	21,688,712	24,527,392
Net income per common share - basic
Net income per common share - continuing operations	$ 0.09	$ 0.29	$ 0.18	$ 0.55
Net income per common share - discontinued operations		0.93		0.87
Net income per common share - basic	0.09	1.22	0.18	1.42
Net income per common share diluted
Net income per common share - continuing operations	0.09	0.29	0.18	0.55
Net income per common share - discontinued operations		0.92		0.86
Net income per common share - diluted	$ 0.09	$ 1.21	$ 0.18	$ 1.41

Earnings Per Common Share - Nar

Earnings Per Common Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Mar. 04, 2020	Dec. 31, 2019	Mar. 24, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded (in shares)			109,446	150
Capital shares, authorized (in shares)								110,000,000
Preferred stock authorized (in shares)	10,000,000		10,000,000				10,000,000	10,000,000
Preferred stock outstanding (in shares)	0		0				0
Preferred stock par value	$ 0		$ 0				$ 0	$ 0
Common stock par value	$ 0		$ 0				$ 0	$ 0
Common stock authorized (in shares)	100,000,000		100,000,000				100,000,000	100,000,000
Common stock issued (in shares)	21,477,631		21,477,631				21,751,026
Common stock outstanding (in shares)	21,477,631		21,477,631				21,751,026
Dividends paid	$ 0	$ 26,500	$ 12,500	$ 26,500
Authorized amount under stock repurchase program					$ 85,000	$ 25,000
Authorized amount available under the stock repurchase program at commencement of the program						15,000
Amount of authorized stock repurchases under the stock repurchase program subject to regulatory approval						$ 10,000
Stock repurchased		$ 19,543	$ 7,411	$ 36,618
Stock repurchased (in shares)			418,858
Stock repurchased program			$ 7,400
Buy Back Program
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock repurchased (in shares)			114,592
Stock repurchased program			$ 1,600

Derivatives and Hedging - Narra

Derivatives and Hedging - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Notional Amount	$ 6,700,000		$ 6,700,000		$ 7,700,000
Expected reclassification to loan interest income	1,700,000		1,700,000
Collateral posted	13,900,000		13,900,000		13,600,000
Derivatives not designated as hedging instruments under ASC 815 | Other assets
Derivative [Line Items]
Notional Amount	109,126,000		109,126,000		119,325,000
Swap | Derivatives designated as hedging instruments under ASC 815
Derivative [Line Items]
Notional Amount	146,500,000		146,500,000		149,100,000
Swap | Derivatives not designated as hedging instruments under ASC 815
Derivative [Line Items]
Notional Amount	71,700,000		71,700,000		89,500,000
Swap | Derivatives not designated as hedging instruments under ASC 815 | Other assets
Derivative [Line Items]
Notional Amount	35,861,000		35,861,000		44,763,000
Cash Flow Hedging
Derivative [Line Items]
Hedge ineffectiveness gains or losses recognized	0	$ 0	0	$ 0
Cash Flow Hedging | Derivatives designated as hedging instruments under ASC 815 | LIBOR
Derivative [Line Items]
Notional Amount	125,000,000		125,000,000		175,000,000
Cash Flow Hedging | Derivatives designated as hedging instruments under ASC 815 | Other assets | LIBOR
Derivative [Line Items]
Notional Amount	$ 125,000,000		$ 125,000,000		$ 125,000,000

Derivatives and Hedging (Deriva

Derivatives and Hedging (Derivative Contracts and Credit Risk Participation Agreements) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional Amount	$ 6,700	$ 7,700
Derivatives designated as hedging instruments under ASC 815 | Swap
Derivative [Line Items]
Notional Amount	146,500	149,100
Derivatives designated as hedging instruments under ASC 815 | Cash Flow Hedging | LIBOR
Derivative [Line Items]
Notional Amount	125,000	175,000
Derivatives not designated as hedging instruments under ASC 815 | Swap
Derivative [Line Items]
Notional Amount	71,700	89,500
Other assets | Derivatives designated as hedging instruments under ASC 815 | Cash Flow Hedging | LIBOR
Derivative [Line Items]
Notional Amount	125,000	125,000
Fair Value	12,790	3,578
Other assets | Derivatives not designated as hedging instruments under ASC 815
Derivative [Line Items]
Notional Amount	109,126	119,325
Fair Value	12,887	5,278
Other assets | Derivatives not designated as hedging instruments under ASC 815 | Swap
Derivative [Line Items]
Notional Amount	35,861	44,763
Fair Value	2,366	1,025
Other assets | Derivatives not designated as hedging instruments under ASC 815 | Zero premium collar
Derivative [Line Items]
Notional Amount	73,265	74,562
Fair Value	10,521	4,253
Other liabilities | Derivatives designated as hedging instruments under ASC 815 | Cash Flow Hedging | LIBOR
Derivative [Line Items]
Notional Amount		50,000
Fair Value		8
Other liabilities | Derivatives not designated as hedging instruments under ASC 815
Derivative [Line Items]
Notional Amount	115,845	126,982
Fair Value	13,012	5,639
Other liabilities | Derivatives not designated as hedging instruments under ASC 815 | Swap
Derivative [Line Items]
Notional Amount	35,861	44,763
Fair Value	2,400	1,090
Other liabilities | Derivatives not designated as hedging instruments under ASC 815 | Dealer offset to zero premium collar
Derivative [Line Items]
Notional Amount	73,265	74,562
Fair Value	10,601	4,545
Other liabilities | Derivatives not designated as hedging instruments under ASC 815 | Credit risk participation
Derivative [Line Items]
Notional Amount	6,719	7,657
Fair Value	$ 11	$ 4

Derivatives and Hedging (Impact

Derivatives and Hedging (Impact to Consolidated Statements of Income Related to Derivative Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)		$ 654		$ 654
Cash Flow Hedging | Interest rate swaps
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ 3,669	1,823	$ 9,268	3,091
Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	(510)	(8)	(652)	(129)
Derivatives not designated as hedging instruments under ASC 815
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	10	(233)	(236)	(344)
Derivatives not designated as hedging instruments under ASC 815 | Other income / (expense) | Interest rate products
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	12	(231)	(242)	(341)
Derivatives not designated as hedging instruments under ASC 815 | Other income / (expense) | Other contracts
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ (2)	$ (2)	$ 6	$ (3)

Other Borrowings and Long Ter_3

Other Borrowings and Long Term Debt - FHLB Borrowings (Details) - FHLB short-term borrowings $ in Thousands	Jun. 30, 2020USD ($)
Debt Instrument [Line Items]
FHLB advances	$ 50,000
Fixed rate advance maturing July 14, 2020
Debt Instrument [Line Items]
FHLB advances	$ 50,000
Interest Rate	0.27%

Other Borrowings and Long Ter_4

Other Borrowings and Long Term Debt - Narrative (Details) - USD ($)	Sep. 28, 2015	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Other Borrowings and Long-Term Debt
Interest expense for FHLB borrowings		$ 38,000	$ 270,000	$ 38,000	$ 270,000
FHLB Advances		50,000,000		50,000,000
Available line of credit commitments		815,800,000		815,800,000
Available line of credit based on collateral available		140,200,000		140,200,000
Interest expense, federal funds purchased		6,000	$ 168,000	38,000	$ 286,000
Subordinated Debt
Other Borrowings and Long-Term Debt
Aggregate principal amount		50,000,000		$ 50,000,000		$ 50,000,000
Subordinated Debt | Minimum
Other Borrowings and Long-Term Debt
Debt instrument term				5 years
Subordinated Note After September 30, 2020 Due September 2025 | Subordinated Debt
Other Borrowings and Long-Term Debt
Aggregate principal amount	$ 50,000,000	$ 50,000,000		$ 50,000,000		$ 50,000,000
Fixed rate of interest	6.25%	6.25%		6.25%
Basis spread on variable rate	4.68%
Debt instrument redemption price (as a percent)	100.00%
Debt instrument term				10 years
Federal Home Loan Bank of Atlanta
Other Borrowings and Long-Term Debt
Available line of credit based on collateral available		$ 218,700,000		$ 218,700,000
FHLB short-term borrowings
Other Borrowings and Long-Term Debt
FHLB advances		$ 50,000,000		$ 50,000,000

Other Borrowings and Long Ter_5

Other Borrowings and Long Term Debt - Subordinated Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Subordinated debt, net	$ 49,958	$ 49,873
Subordinated Debt
Debt Instrument [Line Items]
Principal amount	50,000	50,000
Less debt issuance costs	42	127
Subordinated debt, net	$ 49,958	$ 49,873

Share-Based Compensation - Narr

Share-Based Compensation - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual term (in years)			2 years 21 days
Fair value of vested option shares			$ 0	$ 137,000
Restricted stock awards granted (in shares)			0
Total incremental cost resulting from modifications				31,000
Restricted stock and performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 632,000	$ 216,000	$ 1,000,000	707,000
Unrecognized compensation cost	$ 2,900,000	$ 2,400,000	$ 2,900,000	$ 2,400,000
Weighted-average period of recognition			2 years 2 months 1 day	2 years 2 months 1 day
Restricted stock awards granted (in shares)	18,717	25,743	142,550	130,093
Granted/modified (dollars per share)	$ 11.38	$ 17.54	$ 18.13	$ 19.54
Stock options and warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 17,000	$ 52,000	$ 35,000	$ 133,000
Unrecognized compensation cost	$ 24,000	$ 95,000	$ 24,000	$ 95,000
Weighted-average period of recognition			3 months 18 days	1 year 4 months 24 days
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)			142,550
Granted/modified (dollars per share)			$ 18.13
Options modified during period (in shares)				4,719
Restricted stock awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted stock awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual term (in years)			2 years 1 month 6 days
Options modified during period (in shares)				12,500
2015 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance	4,525,000		4,525,000
Additional awards available to be granted (in shares)			3,111,000
Award vesting period			3 years
Expiration period			10 years

Share-Based Compensation - Fair

Share-Based Compensation - Fair Value of Options Assumptions (Details) - Employee Stock Option	6 Months Ended
	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.27%
Expected stock price volatility	26.80%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	1 year 8 months 23 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	1 year 9 months 25 days

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Option and Warrant Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)$ / sharesshares
Shares
Outstanding, Beginning of period (in shares) | shares	318,980
Exercised (in shares) | shares	(60,940)
Expired (in shares) | shares	(94)
Outstanding, End of period (in shares) | shares	257,946
Exercisable (in shares) | shares	247,946
Weighted Average Exercise Price
Outstanding, Beginning of period (dollars per share) | $ / shares	$ 11.47
Exercised (dollars per share) | $ / shares	10.82
Expired (dollars per share) | $ / shares	102.12
Outstanding, End of period (dollars per share) | $ / shares	11.59
Exercisable (dollars per share) | $ / shares	$ 11.45
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, Weighted average remaining contractual term (in years)	2 years 21 days
Exercisable, Weighted average remaining contractual term (in years)	1 year 11 months 4 days
Outstanding, Aggregate intrinsic value | $	$ 284
Exercisable, Aggregate intrinsic value | $	$ 284
Employee Stock Option
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, Weighted average remaining contractual term (in years)	2 years 1 month 6 days

Share-Based Compensation - Rest

Share-Based Compensation - Restricted Stock Activity (Details)	6 Months Ended
	Jun. 30, 2020$ / sharesshares
Shares
Granted/modified (in shares)	0
Restricted stock awards
Shares
Outstanding, Beginning of period (in shares)	292,877
Granted/modified (in shares)	142,550
Vested (in shares)	(98,991)
Forfeited (in shares)	(5,661)
Outstanding, End of period (in shares)	330,775
Weighted Average Grant-Date Fair Value
Outstanding, Beginning of period (dollars per share) | $ / shares	$ 19
Granted/modified (dollars per share) | $ / shares	18.13
Vested (dollars per share) | $ / shares	17.60
Forfeited (dollars per share) | $ / shares	18.67
Outstanding, Ending of period (dollars per share) | $ / shares	$ 19.05

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value Measurements
Fair value of assets from Level 1 to Level 2	$ 0	$ 0	$ 0	$ 0
Fair value assets from Level 2 to Level 1	0	0	0	0
Fair value liabilities from Level 1 to Level 2	0	0	0	0
Fair value liabilities from Level 2 to Level 1	0	0	0	0
Fair value of inputs from reconciliation of recurring assets	0	0	0	0
Fair value of inputs from reconciliation of recurring liabilities	$ 0	$ 0	$ 0	$ 0

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Measurements Recurring (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	$ 271,829	$ 282,461
Interest rate derivative assets	25,677	8,856
Interest rate derivative liabilities	13,012	5,647
Fair Value | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	271,829	282,461
Interest rate derivative assets	25,677	8,856
Interest rate derivative liabilities	13,012	5,647
Fair Value | Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Interest rate derivative assets		0
Interest rate derivative liabilities		0
Fair Value | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	271,829	282,461
Interest rate derivative assets	25,677	8,856
Interest rate derivative liabilities	13,012	5,647
Fair Value | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Interest rate derivative assets		0
Interest rate derivative liabilities		0
Fair Value | U.S. states and political divisions | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	83,142	82,485
Fair Value | U.S. states and political divisions | Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | U.S. states and political divisions | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	83,142	82,485
Fair Value | U.S. states and political divisions | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Trust preferred securities | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	4,375	4,688
Fair Value | Trust preferred securities | Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Trust preferred securities | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	4,375	4,688
Fair Value | Trust preferred securities | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Corporate debt securities | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	19,683	19,920
Fair Value | Corporate debt securities | Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Corporate debt securities | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	19,683	19,920
Fair Value | Corporate debt securities | Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Mortgage-backed securities | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	164,629	175,368
Fair Value | Mortgage-backed securities | Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale		0
Fair Value | Mortgage-backed securities | Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available-for-sale	$ 164,629	$ 175,368

Fair Value Measurements - Fai_2

Fair Value Measurements - Fair Value Measurements Nonrecurring (Details) - Impaired Loans - Fair Value - Fair value, measurements, nonrecurring - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 4,680	$ 4,288
Quoted Prices in Active Markets for Identical Securities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 4,680	$ 4,288

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Value and Carrying Value Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial assets
Cash and due from banks	$ 33,759	$ 45,249
Interest bearing deposits in banks	33,038	421,079
Total securities available-for-sale	271,829	282,461
Total securities held to maturity	185,933	116,972
Loans held for investment, net	2,153,089	1,854,989
Derivative assets	25,677	8,856
Financial liabilities
Subordinated debt	49,958	49,873
Derivative financial instruments	13,012	5,647
Fair value, measurements, recurring | Carrying Value
Financial assets
Cash and due from banks	33,759	45,249
Interest bearing deposits in banks	33,038	421,079
Total securities available-for-sale	271,829	282,461
Total securities held to maturity	185,920	116,972
FHLB stock	4,744	2,680
Federal Reserve Bank stock	10,029	9,998
Loans held for investment, net	2,184,694	1,873,524
Derivative assets	25,677	8,856
Financial liabilities
Deposits	2,407,631	2,499,046
Federal funds purchased	6,000
FHLB advances	50,000
Subordinated debt	49,958	49,873
Loans held for sale		370
Derivative financial instruments	13,012	5,647
Fair value, measurements, recurring | Fair Value
Financial assets
Total securities available-for-sale	271,829	282,461
Derivative assets	25,677	8,856
Financial liabilities
Derivative financial instruments	13,012	5,647
Fair value, measurements, recurring | Fair Value | Quoted Prices in Active Markets for Identical Securities (Level 1)
Financial assets
Cash and due from banks	33,759	45,249
Interest bearing deposits in banks	33,038	421,079
Total securities available-for-sale		0
Total securities held to maturity		0
FHLB stock		0
Federal Reserve Bank stock		0
Loans held for investment, net		0
Derivative assets		0
Financial liabilities
Deposits		0
Federal funds purchased	6,000
Subordinated debt		0
Loans held for sale		0
Derivative financial instruments		0
Fair value, measurements, recurring | Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets
Cash and due from banks		0
Interest bearing deposits in banks		0
Total securities available-for-sale	271,829	282,461
Total securities held to maturity	194,662	115,291
FHLB stock		0
Federal Reserve Bank stock		0
Loans held for investment, net		0
Derivative assets	25,677	8,856
Financial liabilities
Deposits	2,373,838	2,421,957
FHLB advances	50,004
Subordinated debt	50,153	50,081
Loans held for sale		370
Derivative financial instruments	13,012	5,647
Fair value, measurements, recurring | Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets
Cash and due from banks		0
Interest bearing deposits in banks		0
Total securities available-for-sale		0
Total securities held to maturity		0
FHLB stock	4,744	2,680
Federal Reserve Bank stock	10,029	9,998
Loans held for investment, net	$ 2,211,005	1,890,258
Derivative assets		0
Financial liabilities
Deposits		0
Subordinated debt		0
Loans held for sale		0
Derivative financial instruments		$ 0

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Financial Instruments whose contract amount represents credit risk	$ 749,621	$ 743,958
Minimum lease payments	18,993	20,055
Commitments to extend credit
Loss Contingencies [Line Items]
Financial Instruments whose contract amount represents credit risk	739,648	735,905
Standby letters of credit
Loss Contingencies [Line Items]
Financial Instruments whose contract amount represents credit risk	9,973	8,053
SBIC Investments
Loss Contingencies [Line Items]
Commitments related to investments in SBICs	$ 2,000	$ 2,400
Letter of Credit
Loss Contingencies [Line Items]
Credit facility, expiration period (less than)	1 year

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Deposit account analysis fees and charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 997	$ 676	$ 1,931	$ 1,222
ATM fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	16	(8)	36	39
NSF fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7	8	25	22
Wire fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	15	102	148	212
Foreign exchange fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	43	92	169	165
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3		4	4
Total service charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,081	916	2,313	2,191
Service charges - continuing operations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 1,081	870	$ 2,313	1,664
Service charges - discontinued operations
Disaggregation of Revenue [Line Items]
Revenue from contract with customer		$ 46		$ 527

Leases - Additional Information

Leases - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease ROU assets	$ 10,800,000		$ 10,800,000		$ 11,900,000
Operating lease liabilities	15,847,000		15,847,000		$ 16,900,000
Rent expense	$ 598,000	$ 473,000	$ 1,200,000	$ 1,200,000
Minimum
Lessee, Lease, Description [Line Items]
Contract terms	1 year		1 year
Contract renewal terms	5 years		5 years
Maximum
Lessee, Lease, Description [Line Items]
Contract terms	12 years		12 years
Contract renewal terms	10 years		10 years

Leases - Net Lease Cost (Detail

Leases - Net Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases
Operating lease cost	$ 592	$ 461	$ 1,186	$ 1,126
Short-term lease cost	6	12	15	26
Sublease income	(92)	(42)	(182)	(116)
Net lease cost	$ 506	$ 431	$ 1,019	$ 1,036

Leases - Other Information Rela

Leases - Other Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases
Operating cash paid for amounts included in the measurement of lease liabilities	$ 565	$ 522	$ 1,125	$ 1,043
Right-of-use assets obtained in exchange for new finance lease liabilities		$ 716		$ 15,207
Weighted-average remaining lease term - operating leases	8 years 8 months 12 days	9 years 2 months 12 days	8 years 8 months 12 days	9 years 2 months 12 days
Weighted-average discount rate - operating leases	3.04%	3.30%	3.04%	3.30%

Leases - Maturity of Remaining

Leases - Maturity of Remaining Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Maturity of remaining lease liabilities:
June 30, 2021	$ 2,027
June 30, 2022	2,351
June 30, 2023	2,244
June 30, 2024	1,995
June 30, 2025	1,893
Thereafter	8,483
Total future minimum lease payments	18,993	$ 20,055
Less: Interest	(3,146)
Present value of net future minimum lease payments	$ 15,847	$ 16,900