CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net (loss) income	$ (558)	$ 541
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Share-based compensation	10	67
Depreciation and amortization	725	791
Gain on sale of assets	(439)	(14)
Equity in net income of joint venture	0	(94)
Changes in assets and liabilities:
Accounts receivable, net of allowance	(842)	2,096
Contract Assets	272	890
Prepaid expenses and other current assets	176	134
Other assets	205	(167)
Accounts payable and accrued liabilities	(667)	(481)
Contract Liabilities	(371)	(2,749)
Net cash (used in) provided by operating activities	(1,489)	1,014
Cash flows from investing activities:
Purchases of property, plant and equipment	(559)	(1,588)
Proceeds from sale of assets	538	18
Repayments received on notes receivable	8	13
Short term investment-certificate of deposit	(9)	0
Cash distribution received from joint venture	0	94
Net cash used in investing activities	(22)	(1,463)
Cash flows from financing activities:
Principal payment on long-term debt	(5)	0
Cash paid for purchase of our common stock	0	(558)
Net cash used in financing activities	(5)	(558)
Change in cash	(1,516)	(1,007)
Cash, beginning of period	3,939	8,203
Cash, end of period	2,423	7,196
Supplemental schedule of investing and financing activities:
Addition of property, plant and equipment (non-cash)	$ 317	$ 0