Stock-based Compensation, Stock Option Activity (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)			455,000	537,500
Granted during period (in shares)	0	0	0	0
Exercised during period (in shares)			0	0
Forfeited or expired during period (in shares)			(5,000)	(82,500)
Outstanding at end of period (in shares)	450,000	455,000	450,000	455,000
Exercisable at end of period (in shares)	360,000	275,000	360,000	275,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)			$ 1.67	$ 2.19
Granted during period (in dollars per share)			0	0
Exercised during period (in dollars per share)			0	0
Forfeited or expired during period (in dollars per share)			6.00	4.89
Outstanding at end of period (in dollars per share)	$ 1.62	$ 1.67	1.62	1.67
Exercisable at end of period (in dollars per share)	$ 1.62	$ 1.70	$ 1.62	$ 1.70
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Stock based compensation expense	$ 10	$ 29	$ 10	$ 29
Unrecognized compensation cost	$ 16		$ 16
Period of recognition for unrecognized compensation cost			5 months