CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income (loss)	$ (116)	$ 164
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,348	1,532
Share-based compensation	134	344
Bad debt expense	0	167
Write off of deferred financing fees	0	23
Equity in net income of joint venture and other income	(94)	0
Gain on sale of assets	(576)	(1,070)
Changes in operating assets and liabilities:
Accounts receivable	1,897	1,355
Costs and estimated earnings in excess of billings on uncompleted contracts	152	277
Prepaid expenses and other current assets	(6)	(67)
Other assets	(497)	5
Accounts payable and accrued liabilities	(267)	(419)
Billings in excess of costs and estimated earnings on uncompleted contracts	(2,737)	3,303
Net cash (used in) provided by operating activities	(762)	5,614
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	908	3,800
Payments received on employee receivable	15	27
Advances	(94)	0
Purchases of property, plant and equipment	(2,940)	(1,339)
Cash used in short term investment	(12)	(1,005)
Cash distribution received from joint venture	94	161
Net cash (used in) provided by investing activities	(2,029)	1,644
Cash flows from financing activities:
Proceeds from long-term debt	0	300
Repayments of long-term debt	0	(3,047)
Release of compensating balance	0	3,900
Cash paid for deferred financing costs	0	(15)
Cash paid for purchase of our common stock	(1,473)	(567)
Net cash (used in) provided by financing activities	(1,473)	571
Change in cash	(4,264)	7,829
Cash, beginning of year	8,203	374
Cash, end of year	3,939	8,203
Supplemental schedule of operating, investing and financing activities:
Cash paid for interest	0	47
Shares of common stock surrendered to settle employee payroll tax liabilities	0	222
Reclassification of equipment	3,117	3,117
Reclassification of a note receivable	$ 533	$ 568