Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Dec. 31, 2019		9,499
Beginning Balance at Dec. 31, 2019	$ 130,506	$ 9,499	$ 43,667	$ 76,978	$ 362
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in net unrealized gains on securities available for sale, net of reclassification adjustment and tax effects	6,639				6,639
Dividends on common shares	(1,900)			(1,900)
Goodwill adjustment	(485)		(485)
Stock-based compensation expense	17		17
Net income	3,817			3,817
Ending Balance (in shares) at Jun. 30, 2020		9,499
Ending Balance at Jun. 30, 2020	138,594	$ 9,499	43,199	78,895	7,001
Beginning Balance (in shares) at Mar. 31, 2020		9,499
Beginning Balance at Mar. 31, 2020	136,072	$ 9,499	43,675	77,631	5,267
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in net unrealized gains on securities available for sale, net of reclassification adjustment and tax effects	1,734				1,734
Dividends on common shares	(950)			(950)
Goodwill adjustment	(485)		(485)
Stock-based compensation expense	9		9
Net income	2,214			2,214
Ending Balance (in shares) at Jun. 30, 2020		9,499
Ending Balance at Jun. 30, 2020	138,594	$ 9,499	43,199	78,895	7,001
Beginning Balance (in shares) at Dec. 31, 2020		9,499
Beginning Balance at Dec. 31, 2020	144,488	$ 9,499	43,215	84,993	6,781
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in net unrealized gains on securities available for sale, net of reclassification adjustment and tax effects	(4,581)				(4,581)
Dividends on common shares	(1,947)			(1,947)
Stock-based compensation expense	17		17
Net income	8,917			8,917
Ending Balance (in shares) at Jun. 30, 2021		9,499
Ending Balance at Jun. 30, 2021	146,894	$ 9,499	43,232	91,963	2,200
Beginning Balance (in shares) at Mar. 31, 2021		9,499
Beginning Balance at Mar. 31, 2021	143,487	$ 9,499	43,224	88,939	1,825
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in net unrealized gains on securities available for sale, net of reclassification adjustment and tax effects	375				375
Dividends on common shares	(973)			(973)
Stock-based compensation expense	8		8
Net income	3,997			3,997
Ending Balance (in shares) at Jun. 30, 2021		9,499
Ending Balance at Jun. 30, 2021	$ 146,894	$ 9,499	$ 43,232	$ 91,963	$ 2,200