CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2017	$ 91,480	$ 67,926	$ 5,280	$ 18,624	$ (350)
Beginning balance, shares at Dec. 31, 2017		13,190,527
Net income	14,253			14,253
Stock issued under stock offering, net of expenses	22,569	$ 22,569
Stock issued under stock offering, net of expenses, shares		2,300,000
Stock issued under stock-based compensation plans	714	$ 714
Stock issued under stock-based compensation plans, shares		369,779
Stock-based compensation	969		969
Change in unrealized gain (loss) on securities available for sale net of reclassifications and tax effects	(198)				(198)
Ending balance at Dec. 31, 2018	129,787	$ 91,209	6,249	32,877	(548)
Ending balance, shares at Dec. 31, 2018		15,860,306
Net income	16,757			16,757
Stock issued under stock-based compensation plans	563	$ 563
Stock issued under stock-based compensation plans, shares		425,489
Stock-based compensation	1,275		1,275
Repurchase of common stock	(5,391)	$ (5,391)
Repurchase of common stock, shares		(582,519)
Cash dividends declared	(3,151)			(3,151)
Change in unrealized gain (loss) on securities available for sale net of reclassifications and tax effects	736				736
Ending balance at Dec. 31, 2019	140,576	$ 86,381	7,524	46,483	188
Ending balance, shares at Dec. 31, 2019		15,703,276
Net income	13,127			13,127
Stock issued under stock-based compensation plans	380	$ 380
Stock issued under stock-based compensation plans, shares		298,591
Stock-based compensation	997		997
Repurchase of common stock	(8,104)	$ (8,104)
Repurchase of common stock, shares		(985,167)
Cash dividends declared	(4,262)			(4,262)
Change in unrealized gain (loss) on securities available for sale net of reclassifications and tax effects	652				652
Ending balance at Dec. 31, 2020	$ 143,366	$ 78,657	$ 8,521	$ 55,348	$ 840
Ending balance, shares at Dec. 31, 2020		15,016,700