Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2019	$ 8,112	$ 184,120	$ (8,506)	$ 183,726
Net income	0	11,129	0	11,129
Other comprehensive income (loss), net of tax	0	0	11,687	11,687
Dividends	0	(4,348)	0	(4,348)
Balance at Sep. 30, 2020	8,112	190,901	3,181	202,194
Balance at Jun. 30, 2020	8,112	186,733	936	195,781
Net income	0	4,168	0	4,168
Other comprehensive income (loss), net of tax	0	0	2,245	2,245
Balance at Sep. 30, 2020	8,112	190,901	3,181	202,194
Balance at Dec. 31, 2020	8,040	189,547	3,020	200,607
Net income	0	15,131	0	15,131
Other comprehensive income (loss), net of tax	0	0	(8,481)	(8,481)
Common stock repurchased	(419)	(11,666)	0	(12,085)
Dividends	0	(4,319)	0	(4,319)
Balance at Sep. 30, 2021	7,621	188,693	(5,461)	190,853
Balance at Jun. 30, 2021	7,713	185,580	(2,058)	191,235
Net income	0	5,752	0	5,752
Other comprehensive income (loss), net of tax	0	0	(3,403)	(3,403)
Common stock repurchased	(92)	(2,639)	0	(2,731)
Balance at Sep. 30, 2021	$ 7,621	$ 188,693	$ (5,461)	$ 190,853