CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock	Additional Paid-in Capital	Treasury Stock
Balance at Dec. 31, 2019	$ 53,461	$ 42,891	$ 2,443	$ 2,532	$ 5,602	$ (7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock reacquired	(6)					(6)
Comprehensive income (loss):
Net income (loss)	(860)	(860)
Other comprehensive loss (net of tax)	(2,485)		(2,485)
Cash dividends	(152)	(152)
Balance at Mar. 31, 2020	49,958	41,879	(42)	2,532	5,602	(13)
Balance at Dec. 31, 2019	53,461	42,891	2,443	2,532	5,602	(7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock reacquired	(36)
Comprehensive income (loss):
Net income (loss)	(8,619)
Other comprehensive loss (net of tax)	1,142
Cash dividends	(607)
Balance at Dec. 31, 2020	45,366	33,665	3,585	2,533	5,626	(43)
Comprehensive income (loss):
Net income (loss)	722	722
Other comprehensive loss (net of tax)	(1,146)		(1,146)
Cash dividends	(152)	(152)
Balance at Mar. 31, 2021	$ 44,790	$ 34,235	$ 2,439	$ 2,533	$ 5,626	$ (43)