Restricted Stock Plan (Details) - Restricted stock plan - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock options
Shares reserved for issuance thereunder	405,805		405,805
Weighted Average Grant Date Fair Value
Stock based compensation expense, before tax	$ 5	$ 10	$ 16	$ 26
Stock based compensation expense, net of tax	4	$ 7	12	$ 19
Total unrecognized compensation cost related to non-vested restricted stock units	$ 31		$ 31
Weighted-average period over which unrecognized compensation cost will be recognized			2 years
Employees
Shares
Non-vested balance at beginning of period (in shares)			9,000
Vested (in shares)			(3,000)
Non-vested balance at end of period (in shares)	6,000		6,000
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		$ 7.30