CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (1,207)	$ (193)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Share-based compensation	15	101
Depreciation and amortization	1,059	1,204
Gain on sale of assets	(439)	(574)
Equity in net income of joint venture	0	(94)
Changes in assets and liabilities:
Accounts receivable, net of allowance	931	2,298
Contract Assets	(249)	779
Prepaid expenses and other current assets	180	(45)
Other assets	102	(161)
Accounts payable and accrued liabilities	(299)	(362)
Contract Liabilities	(104)	(2,745)
Net cash (used in) provided by operating activities	(11)	208
Cash flows from investing activities:
Purchases of property, plant and equipment	(759)	(2,306)
Proceeds from sale of assets	538	958
Repayments received on notes receivable	12	20
Short term investment-certificate of deposit	(15)	(10)
Cash distribution received from joint venture	0	94
Net cash used in investing activities	(224)	(1,244)
Cash flows from financing activities:
Principal payment on long-term debt	(7)	0
Cash paid for purchase of our common stock	0	(1,474)
Net cash used in financing activities	(7)	(1,474)
Change in cash and cash equivalents	(242)	(2,510)
Cash and cash equivalents, beginning of period	3,939	8,203
Cash and cash equivalents, end of period	3,697	5,693
Supplemental schedule of investing and financing activities:
Addition of property, plant and equipment (non-cash)	$ 277	$ 0