CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Total
Balances at Dec. 31, 2019	$ 125	$ 61,045	$ 131,425	$ 207	$ 192,802
Net income			3,118		3,118
Other comprehensive income (loss)				1,251	1,251
Stock-based compensation		61			61
Vesting of restricted stock, net of shares surrendered		(39)			(39)
Cash dividends declared			(1,499)		(1,499)
Balances at Mar. 31, 2020	125	61,067	133,044	1,458	195,694
Balances at Dec. 31, 2019	125	61,045	131,425	207	192,802
Net income					11,844
Balances at Sep. 30, 2020	122	58,090	138,765	1,904	198,881
Balances at Mar. 31, 2020	125	61,067	133,044	1,458	195,694
Net income			5,335		5,335
Other comprehensive income (loss)				546	546
Stock-based compensation		62			62
Cash dividends declared			(1,503)		(1,503)
Balances at Jun. 30, 2020	125	61,129	136,876	2,004	200,134
Net income			3,391		3,391
Other comprehensive income (loss)				(100)	(100)
Retirement of common stock	(3)	(3,106)			(3,109)
Stock-based compensation		67			67
Cash dividends declared			(1,502)		(1,502)
Balances at Sep. 30, 2020	122	58,090	138,765	1,904	198,881
Balances at Dec. 31, 2020	118	52,167	141,205	1,529	195,019
Net income			3,998		3,998
Other comprehensive income (loss)				(782)	(782)
Retirement of common stock		(819)			(819)
Stock-based compensation		97			97
Cash dividends declared			(1,409)		(1,409)
Balances at Mar. 31, 2021	118	51,445	143,794	747	196,104
Balances at Dec. 31, 2020	118	52,167	141,205	1,529	195,019
Net income					12,645
Balances at Sep. 30, 2021	118	51,641	149,620	228	201,607
Balances at Mar. 31, 2021	118	51,445	143,794	747	196,104
Net income			4,031		4,031
Other comprehensive income (loss)				(141)	(141)
Stock-based compensation		99			99
Cash dividends declared			(1,411)		(1,411)
Balances at Jun. 30, 2021	118	51,544	146,414	606	198,682
Net income			4,616		4,616
Other comprehensive income (loss)				(378)	(378)
Stock-based compensation		91			91
Exercise of options, net of shares surrendered		6			6
Cash dividends declared			(1,410)		(1,410)
Balances at Sep. 30, 2021	$ 118	$ 51,641	$ 149,620	$ 228	$ 201,607