Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Cash Flows from Operating Activities:
Net income (loss)	$ (1,863)	$ 1,919
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	868	1,110
Share-based compensation expense	367	374
Loss on disposal of fixed assets	1
Non cash change in note receivable		(635)
Deferred income tax benefit	(1,237)
Changes in current assets and liabilities:
Trade accounts receivable	11,026	5,411
Costs and estimated earnings in excess of billings on uncompleted contracts	1,910	1,159
Other current assets	832	532
Accounts payable	276	(3,135)
Accrued compensation and benefits	(442)	(140)
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,776)	(4,393)
Income taxes payable	(237)	(299)
Other current liabilities, net	33	(954)
Net cash provided by operating activities	9,758	949
Cash Flows from Investing Activities:
Property and equipment acquired	(84)	(873)
Proceeds from notes receivable	30	6,083
Net cash (used in) provided by investing activities	(54)	5,210
Cash Flows from Financing Activities:
Debt issuance costs	(20)	(7)
Purchase of treasury stock	(1,100)	(11)
Payments on capitalized leases	(245)	(476)
Net cash used in financing activities	(1,365)	(494)
Net change in cash	8,339	5,665
Cash and cash equivalents, at beginning of period	7,806	6,213
Cash and cash equivalents, at end of period	16,145	11,878
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	131	134
Cash paid during the period for income taxes (net of refunds)	428	517
Supplemental disclosure of noncash investing activities:
Property and equipment purchased through capital lease assignment		$ 304