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, 2017	$ 8,698	$ 185,893	$ (9,695)	$ 184,896
Net income		7,337		7,337
Dividends		(4,036)		(4,036)
Other comprehensive income (loss), net of tax			(2,346)	(2,346)
Balance at Jun. 30, 2018	8,698	189,194	(12,041)	185,851
Balance at Mar. 31, 2018	8,698	185,189	(12,350)	185,537
Net income		4,041		4,041
Dividends		(4,036)		(4,036)
Other comprehensive income (loss), net of tax			309	309
Balance at Jun. 30, 2018	8,698	189,194	(12,041)	185,851
Balance at Dec. 31, 2018	8,698	193,625	(12,085)	190,238
Net income		8,437		8,437
Dividends		(4,359)		(4,359)
Other comprehensive income (loss), net of tax			7,529	7,529
Common stock repurchased, 452,400 shares	(566)	(17,431)		(17,997)
Balance at Jun. 30, 2019	8,132	180,272	(4,556)	183,848
Balance at Mar. 31, 2019	8,132	180,637	(7,541)	181,228
Net income		3,994		3,994
Dividends		(4,359)		(4,359)
Other comprehensive income (loss), net of tax			2,985	2,985
Balance at Jun. 30, 2019	$ 8,132	$ 180,272	$ (4,556)	$ 183,848