Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 6,915	$ 11,348	$ 14,284	$ 19,072
Costs and expenses:
Cost of sales	5,822	8,999	12,176	16,043
Selling, general, and administrative expenses	1,983	1,967	3,616	3,608
Total costs and expenses	7,805	10,966	15,792	19,651
Operating (loss) gain	(890)	382	(1,508)	(579)
Other (expense) income:
Gain on sale of assets	531	0	531	0
Gain on settlement of liabilities	143	0	143	0
Interest expense, net	(254)	(238)	(517)	(475)
Change in fair value of contingent earn-outs, net	0	2	0	4
(Loss) gain before income taxes	(470)	146	(1,351)	(1,050)
Income tax expense	(11)	(11)	(14)	(15)
Net (loss) gain	(481)	135	(1,365)	(1,065)
Accrued preferred stock dividend	(401)	(422)	(849)	(832)
Net loss attributable to common shareholders	$ (882)	$ (287)	$ (2,214)	$ (1,897)
Net loss per share, basic and diluted (in usd per share)	$ (0.37)	$ (0.12)	$ (0.92)	$ (0.79)
Weighted average common shares outstanding, basic and diluted (in shares)	2,407	2,396	2,407	2,396