Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017		10,771,000
Balance at Dec. 31, 2017		$ 108	$ 68,446		$ (12,303)	$ 56,251
Net income (loss)					(5,324)	(5,324)
Share-based compensation			1,776			1,776
Restricted stock vesting & other (in shares)		203,000		(75,000)
Restricted stock vesting & other		$ 2	2,224	$ (827)		1,399
Convertible Second Lien Notes warrant exercises (in shares)		589,000
Convertible Second Lien Notes warrant exercises		$ 6	(6)
Issuance cost			(34)			$ (34)
Treasury stock activity (in shares)						75,053
Balance (in shares) at Mar. 31, 2018		11,563,000		(75,000)
Balance at Mar. 31, 2018		$ 116	72,406	$ (827)	(17,627)	$ 54,068
Balance (in shares) at Dec. 31, 2018		12,151,000
Balance at Dec. 31, 2018		$ 122	74,861		(10,553)	64,430
Net income (loss)					448	448
Share-based compensation			1,745			1,745
Treasury stock activity (in shares)		1
Treasury stock activity				$ (5)		(5)
Balance (in shares) at Mar. 31, 2019		12,152,000
Balance at Mar. 31, 2019		$ 122	$ 76,606	$ (5)	$ (10,105)	$ 66,618