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, 2018	$ 45,866	$ 39,355	$ (1,570)	$ 2,527	$ 5,554	$ 0
Comprehensive income (loss):
Net income (loss)	2,443	2,443
Other comprehensive income (loss) (net of tax)	1,759		1,759
Cash dividends	(126)	(126)
Balance at Mar. 31, 2019	49,942	41,672	189	2,527	5,554	0
Balance at Dec. 31, 2018	45,866	39,355	(1,570)	2,527	5,554	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock reacquired	(7)
Comprehensive income (loss):
Net income (loss)	4,067
Other comprehensive income (loss) (net of tax)	(4,013)
Cash dividends	(531)
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 income (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)