Condensed Consolidated Statements of Changes in Shareholders Equity - 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			10,490			10,490
Dividends on common stock, $0.10 and $0.10 per share for the three months ended March 31, 2020 and 2019, respectively			(2,513)			(2,513)
Stock-based compensation expense		545				545
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(2)				(2)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	211
Exercise of stock options, net of shares withheld for employee tax liabilities		(69)		$ 184		115
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				10,844
Other comprehensive income, net of tax					2,393	2,393
Ending balance at Mar. 31, 2019	$ 258	344,971	168,603	$ (14,597)	(582)	498,653
Ending balance, shares at Mar. 31, 2019	25,777,904			(859,428)
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			7,541			7,541
Dividends on common stock, $0.10 and $0.10 per share for the three months ended March 31, 2020 and 2019, respectively			(2,496)			(2,496)
Stock-based compensation expense		557				557
Vesting of restricted stock, net of shares withheld for employee tax liabilities		(35)				(35)
Vesting of restricted stock, net of shares withheld for employee tax liabilities (in shares)	5,232
Exercise of stock options, net of shares withheld for employee tax liabilities		(10)		$ 26		16
Exercise of stock options, net of shares withheld for employee tax liabilities (in shares)				1,524
Shares repurchased	$ (2)	(5,358)				(5,360)
Shares repurchased, Shares	(240,445)
Other comprehensive income, net of tax					3,975	3,975
Ending balance at Mar. 31, 2020	$ 256	$ 341,713	$ 203,080	$ (14,536)	$ 6,361	$ 536,874
Ending balance, shares at Mar. 31, 2020	25,601,835			(855,822)