Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2019	18,137,000
Balance at Dec. 31, 2019	$ 71,311	$ 100,566	$ 2,601	$ 174,478
Net income	0	916	0	916
Other comprehensive income (loss), net of tax	0	0	3,346	3,346
Dividend declared on common stock	$ 0	(838)	0	(838)
Repurchase of common stock (in shares)	(1,352,000)
Repurchase of common stock	$ (12,230)	0	0	(12,230)
Restricted stock granted, net of forfeitures (in shares)	22,000
Restricted stock granted, net of forfeitures	$ 0	0	0	0
Shares surrendered for tax-withholding purposes (in shares)	(11,000)
Shares surrendered for tax-withholding purposes	$ (120)	0	0	(120)
Compensation expense associated with restricted stock	$ 106	0	0	106
Balance (in shares) at Mar. 31, 2020	16,796,000
Balance at Mar. 31, 2020	$ 59,067	100,644	5,947	165,658
Balance (in shares) at Dec. 31, 2019	18,137,000
Balance at Dec. 31, 2019	$ 71,311	100,566	2,601	174,478
Net income				4,763
Other comprehensive income (loss), net of tax				4,547
Balance (in shares) at Jun. 30, 2020	16,739,000
Balance at Jun. 30, 2020	$ 58,749	103,658	7,148	169,555
Balance (in shares) at Mar. 31, 2020	16,796,000
Balance at Mar. 31, 2020	$ 59,067	100,644	5,947	165,658
Net income	0	3,847	0	3,847
Other comprehensive income (loss), net of tax	0	0	1,201	1,201
Dividend declared on common stock	$ 0	(833)	0	(833)
Repurchase of common stock (in shares)	(57,000)
Repurchase of common stock	$ (423)	0	0	(423)
Compensation expense associated with restricted stock	$ 105	0	0	105
Balance (in shares) at Jun. 30, 2020	16,739,000
Balance at Jun. 30, 2020	$ 58,749	103,658	7,148	169,555
Net income	0	4,329	0	4,329
Other comprehensive income (loss), net of tax	0	0	176	176
Dividend declared on common stock	$ 0	(833)	0	(833)
Restricted stock granted, net of forfeitures (in shares)	53,000
Restricted stock granted, net of forfeitures	$ 0	0	0	0
Compensation expense associated with restricted stock	$ 123	0	0	123
Balance (in shares) at Sep. 30, 2020	16,792,000
Balance at Sep. 30, 2020	$ 58,872	107,154	7,324	173,350
Net income	0	5,072	0	5,072
Other comprehensive income (loss), net of tax	0	0	164	164
Dividend declared on common stock	$ 0	(1,000)	0	(1,000)
Restricted stock granted, net of forfeitures (in shares)	10,000
Restricted stock granted, net of forfeitures	$ 0	0	0	0
Shares surrendered for tax-withholding purposes (in shares)	(1,000)
Shares surrendered for tax-withholding purposes	$ (9)	0	0	(9)
Compensation expense associated with restricted stock	$ 125	0	0	$ 125
Balance (in shares) at Dec. 31, 2020	16,801,000			16,800,662
Balance at Dec. 31, 2020	$ 58,988	111,226	7,488	$ 177,702
Net income	0	4,920	0	4,920
Other comprehensive income (loss), net of tax	0	0	(4,705)	(4,705)
Dividend declared on common stock	$ 0	(1,004)	0	(1,004)
Restricted stock granted, net of forfeitures (in shares)	43,000
Restricted stock granted, net of forfeitures	$ 0	0	0	0
Shares surrendered for tax-withholding purposes (in shares)	(9,000)
Shares surrendered for tax-withholding purposes	$ (97)	0	0	(97)
Compensation expense associated with restricted stock	$ 127	0	0	127
Balance (in shares) at Mar. 31, 2021	16,876,000
Balance at Mar. 31, 2021	$ 59,215	115,142	2,783	177,140
Stock options exercised (in shares)	41,000
Stock options exercised	$ 197	0	0	$ 197
Balance (in shares) at Dec. 31, 2020	16,801,000			16,800,662
Balance at Dec. 31, 2020	$ 58,988	111,226	7,488	$ 177,702
Net income				9,059
Other comprehensive income (loss), net of tax				$ (3,049)
Balance (in shares) at Jun. 30, 2021	16,896,000			16,895,783
Balance at Jun. 30, 2021	$ 59,422	118,276	4,439	$ 182,137
Balance (in shares) at Mar. 31, 2021	16,876,000
Balance at Mar. 31, 2021	$ 59,215	115,142	2,783	177,140
Net income	0	4,139	0	4,139
Other comprehensive income (loss), net of tax	0	0	1,656	1,656
Dividend declared on common stock	$ 0	(1,005)	0	(1,005)
Shares surrendered for tax-withholding purposes (in shares)	0
Shares surrendered for tax-withholding purposes	$ (6)	0	0	(6)
Compensation expense associated with restricted stock	$ 132	0	0	$ 132
Balance (in shares) at Jun. 30, 2021	16,896,000			16,895,783
Balance at Jun. 30, 2021	$ 59,422	118,276	4,439	$ 182,137
Stock options exercised (in shares)	20,000
Stock options exercised	$ 81	$ 0	$ 0	$ 81