Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 26, 2016
Cash Flows from Operating Activities:
Net loss	$ (878)	$ (749)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	269	321
Share-based compensation expense	75	121
Loss on disposal of fixed assets		1
Deferred tax asset	(848)	(1,044)
Changes in current assets and liabilities:
Trade accounts receivable	2,474	4,771
Costs and estimated earnings in excess of billings on uncompleted contracts	(995)	542
Other current assets	176	326
Accounts payable	(976)	(236)
Accrued compensation and benefits	(259)	335
Billings in excess of costs and estimated earnings on uncompleted contracts	102	36
Income taxes payable	96	25
Other current liabilities, net	(109)	(77)
Net cash provided by (used in) operating activities	(873)	4,372
Cash Flows from Investing Activities:
Proceeds from notes receivable	10
Property and equipment acquired	(408)	(45)
Net cash used in investing activities	(398)	(45)
Cash Flows from Financing Activities:
Purchase of treasury stock		(253)
Payments on capitalized leases	(43)	(95)
Net cash used in financing activities	(43)	(348)
Net change in cash, cash equivalents and restricted cash	(1,314)	3,979
Cash, cash equivalents and restricted cash, at beginning of period	15,687	7,806
Cash, cash equivalents and restricted cash, at end of period	14,373	11,785
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	65	38
Cash paid during the period for income taxes (net of refunds)	$ (107)	$ 20