Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016
Cash Flows from Operating Activities:
Net loss	$ (13,926)	$ (1,863)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	791	868
Share-based compensation expense	288	367
Loss on disposal of fixed assets		1
Stock issuance to vendor	225
Deferred tax asset	10,208	(1,237)
Changes in current assets and liabilities:
Trade accounts receivable	(124)	11,026
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,665)	1,910
Other current assets	636	832
Accounts payable	(702)	276
Accrued compensation and benefits	(388)	(442)
Billings in excess of costs and estimated earnings on uncompleted contracts	831	(1,776)
Income taxes payable	181	(237)
Other current liabilities, net	(351)	33
Net cash provided by (used in) operating activities	(3,996)	9,758
Cash Flows from Investing Activities:
Proceeds from notes receivable	45	30
Property and equipment acquired	(590)	(84)
Net cash used in investing activities	(545)	(54)
Cash Flows from Financing Activities:
Purchase of treasury stock	(91)	(1,100)
Debt issuance cost		(20)
Payments on capitalized leases	(157)	(245)
Net cash used in financing activities	(248)	(1,365)
Net change in cash, cash equivalents and restricted cash	(4,789)	8,339
Cash, cash equivalents and restricted cash, at beginning of period	15,687	7,806
Cash, cash equivalents and restricted cash, at end of period	10,898	16,145
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	100	131
Cash paid (received) during the period for income taxes (net of refunds)	$ (148)	$ 428