CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenue from product sales	$ 13,560	$ 10,121	$ 26,571	$ 16,119
Cost of sales for product sales	12,880	9,406	24,960	15,581
Gross profit	680	715	1,611	538
Selling, general and administrative expenses	856	1,191	1,898	2,390
Loss before other income (expense)	(176)	(476)	(287)	(1,852)
Other income (expense)
Interest expense, including loan fee amortization	(202)	(114)	(385)	(173)
Gain on sale of assets	0	0	28	0
Other income (expense), net	1	2	3	13
Total other income (expense)	(201)	(112)	(354)	(160)
Loss before income taxes	(377)	(588)	(641)	(2,012)
Income tax provision	0	39	7	40
Net loss	$ (377)	$ (627)	$ (648)	$ (2,052)
Basic loss per share (in dollars per share)	$ (0.05)	$ (0.08)	$ (0.08)	$ (0.26)
Diluted loss per share (in dollars per share)	$ (0.05)	$ (0.08)	$ (0.08)	$ (0.26)
Weighted average shares outstanding:
Basic (in Shares)	8,075	8,038	8,075	8,029
Diluted (in Shares)	8,075	8,038	8,075	8,029