CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Loss [Member]	Total
Beginning balance at Dec. 31, 2017	$ 4	$ 122	$ 65,137	$ 25,872	$ (35)	$ 91,100
Balance (in shares) at Dec. 31, 2017	437,500	12,233,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				8,569		8,569
Stock-based compensation			218			218
Redemption of preferred stock	$ (4)	$ 4
Redemption of preferred stock (in shares)	(437,500)	437,500
Dividend declared				(70)		(70)
Dividends paid on common stock				(1,511)		(1,511)
Exercise of stock options		$ 2	372			$ 374
Exercise of stock options (in shares)		88,652				88,652
Other			(189)			$ (189)
Other comprehensive income (loss)					(38)	(38)
Ending balance at Dec. 31, 2018		$ 128	65,538	32,860	(73)	98,453
Balance (in shares) at Dec. 31, 2018		12,759,576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				8,374		8,374
Stock-based compensation			146			146
Dividends paid on common stock				(1,789)		(1,789)
Exercise of stock options			260			$ 260
Exercise of stock options (in shares)		51,350				51,350
Other comprehensive income (loss)					28	$ 28
Ending balance at Dec. 31, 2019		$ 128	$ 65,944	$ 39,445	$ (45)	$ 105,472
Balance (in shares) at Dec. 31, 2019		12,810,926