Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016
Cash Flows from Operating Activities:
Net loss	$ (1,772)	$ (2,352)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	543	619
Share-based compensation expense	292	242
Loss on disposal of fixed assets		1
Deferred tax asset	(481)	(1,063)
Changes in current assets and liabilities:
Trade accounts receivable	(1,010)	9,823
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,984)	414
Other current assets	534	662
Accounts payable	(823)	444
Accrued compensation and benefits	(173)	(635)
Billings in excess of costs and estimated earnings on uncompleted contracts	1,149	(162)
Income taxes payable	149	(257)
Other current liabilities, net	(264)	(72)
Net cash provided by (used in) operating activities	(3,840)	7,664
Cash Flows from Investing Activities:
Proceeds from notes receivable	40	29
Property and equipment acquired	(520)	(84)
Net cash used in investing activities	(480)	(55)
Cash Flows from Financing Activities:
Purchase of treasury stock	(91)	(479)
Debt issuance cost		(20)
Payments on capitalized leases	(104)	(177)
Net cash used in financing activities	(195)	(676)
Net change in cash, cash equivalents and restricted cash	(4,515)	6,933
Cash, cash equivalents and restricted cash, at beginning of period	15,687	7,806
Cash, cash equivalents and restricted cash, at end of period	11,172	14,739
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	80	87
Cash paid (received) during the period for income taxes (net of refunds)	$ (146)	$ 418