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, 2018	$ 8,698	$ 193,625	$ (12,085)	$ 190,238
Net income		12,689		12,689
Common stock repurchased	(586)	(17,939)		(18,525)
Other comprehensive income (loss), net of tax			7,945	7,945
Balance at Sep. 30, 2019	8,112	184,016	(4,140)	187,988
Cash dividend		(4,359)		(4,359)
Balance at Jun. 30, 2019	8,132	180,272	(4,556)	183,848
Net income		4,252		4,252
Common stock repurchased	(20)	(508)		(528)
Other comprehensive income (loss), net of tax			416	416
Balance at Sep. 30, 2019	8,112	184,016	(4,140)	187,988
Balance at Dec. 31, 2019	8,112	184,120	(8,506)	183,726
Net income		11,129		11,129
Other comprehensive income (loss), net of tax			11,687	11,687
Balance at Sep. 30, 2020	8,112	190,901	3,181	202,194
Cash dividend		(4,348)		(4,348)
Balance at Jun. 30, 2020	8,112	186,733	936	195,781
Net income		4,168		4,168
Other comprehensive income (loss), net of tax			2,245	2,245
Balance at Sep. 30, 2020	$ 8,112	$ 190,901	$ 3,181	$ 202,194