Restricted Stock Plan (Details) - Restricted stock plan - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock options
Shares reserved for issuance	405,805
Weighted Average Grant Date Fair Value
Stock-based compensation expense recognized	$ 5	$ 5
Stock based compensation expense, net of tax	4	$ 4
Total unrecognized compensation cost related to non-vested restricted stock units	$ 21
Weighted-average period over which unrecognized compensation cost will be recognized	2 years
Employees
Shares
Non-vested balance at beginning of period (in shares)	6,000
Vested (in shares)	(3,000)
Non-vested balance at end of period (in shares)	3,000
Weighted Average Grant Date Fair Value
Non-vested balance at beginning of period (in dollars per share)	$ 7.30
Vested (in dollars per share)	7.30
Non-vested balance at end of period (in dollars per share)	$ 7.30