CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenues	$ 19,478	$ 25,384
Cost of sales:
Cost of sales	9,854	15,032
Depreciation expense	1,077	1,335
Total cost of sales	10,931	16,367
Gross profit	8,547	9,017
Operating expenses:
Selling, general and administrative	9,113	9,672
Depreciation and amortization	271	197
Total operating expenses	9,384	9,869
Operating loss	(837)	(852)
Other income (expense):
Interest income (expense), net	56	(34)
Gain on sale of assets	576	1,070
Equity in net income of joint venture	94	0
Total other income	726	1,036
Income (loss) before income taxes	(111)	184
Income tax expense	(5)	(20)
Net (loss) income	$ (116)	$ 164
Net (loss) income per share:
Basic	$ (0.01)	$ 0.01
Fully diluted	$ (0.01)	$ 0.01
Weighted-average shares outstanding:
Basic	14,233	15,520
Fully diluted	14,233	15,520