Condensed Consolidated Statements of Changes in Shareholders Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2018	$ 258	$ 344,497	$ 160,626	$ (14,781)	$ (2,975)	$ 487,625
Beginning balance, shares at Dec. 31, 2018	25,777,693			(870,272)
Net income			24,805			24,805
Dividends on common stock, $0.10 and $0.20 per share for the three and six months ended June 30, 2020 and 2019, respectively			(5,030)			(5,030)
Stock-based compensation expense		1,112				1,112
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(19)				(19)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	2,442
Exercise of stock options, net of shares withheld for employee tax liabilities		(95)		$ 217		122
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				12,806
Other comprehensive income, net of tax					4,543	4,543
Ending balance at Jun. 30, 2019	$ 258	345,495	180,401	$ (14,564)	1,568	513,158
Ending balance, shares at Jun. 30, 2019	25,780,135			(857,466)
Beginning balance at Mar. 31, 2019	$ 258	344,971	168,603	$ (14,597)	(582)	498,653
Beginning balance, shares at Mar. 31, 2019	25,777,904			(859,428)
Net income			14,315			14,315
Dividends on common stock, $0.10 and $0.20 per share for the three and six months ended June 30, 2020 and 2019, respectively			(2,517)			(2,517)
Stock-based compensation expense		567				567
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(17)				(17)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	2,231
Exercise of stock options, net of shares withheld for employee tax liabilities		(26)		$ 33		7
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				1,962
Other comprehensive income, net of tax					2,150	2,150
Ending balance at Jun. 30, 2019	$ 258	345,495	180,401	$ (14,564)	1,568	513,158
Ending balance, shares at Jun. 30, 2019	25,780,135			(857,466)
CECL implementation, net of deferred tax asset | ASU 2016-13			(3,045)			(3,045)
Beginning balance at Dec. 31, 2019	$ 258	346,559	201,080	$ (14,562)	2,386	535,721
Beginning balance, shares at Dec. 31, 2019	25,837,048			(857,346)
Net income			9,704			9,704
Dividends on common stock, $0.10 and $0.20 per share for the three and six months ended June 30, 2020 and 2019, respectively			(4,985)			(4,985)
Stock-based compensation expense		1,109				1,109
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(44)				(44)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	12,853
Exercise of stock options, net of shares withheld for employee tax liabilities		(10)		$ 43		33
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				2,524
Shares repurchased	$ (2)	(5,358)				(5,360)
Shares repurchased, Shares	(240,445)
Other comprehensive income, net of tax					4,223	4,223
Ending balance at Jun. 30, 2020	$ 256	342,256	202,754	$ (14,519)	6,609	537,356
Ending balance, shares at Jun. 30, 2020	25,609,456			(854,822)
Beginning balance at Mar. 31, 2020	$ 256	341,713	203,080	$ (14,536)	6,361	536,874
Beginning balance, shares at Mar. 31, 2020	25,601,835			(855,822)
Net income			2,163			2,163
Dividends on common stock, $0.10 and $0.20 per share for the three and six months ended June 30, 2020 and 2019, respectively			(2,489)			(2,489)
Stock-based compensation expense		552				552
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(9)				(9)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	7,621
Exercise of stock options, net of shares withheld for employee tax liabilities				$ 17		17
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				1,000
Other comprehensive income, net of tax					248	248
Ending balance at Jun. 30, 2020	$ 256	$ 342,256	$ 202,754	$ (14,519)	$ 6,609	$ 537,356
Ending balance, shares at Jun. 30, 2020	25,609,456			(854,822)