Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2016	Mar. 28, 2015
Cash Flows from Operating Activities:
Net income (loss)	$ (749)	$ 623
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	321	436
Share-based compensation expense	121	125
Loss on disposal of fixed assets	1	0
Non cash change in note receivable	0	(635)
Deferred tax asset	(1,044)	0
Changes in current assets and liabilities:
Trade accounts receivable	4,771	2,520
Costs and estimated earnings in excess of billings on uncompleted contracts	542	(260)
Other current assets	326	164
Accounts payable	(236)	(1,658)
Accrued compensation and benefits	335	425
Billings in excess of costs and estimated earnings on uncompleted contracts	36	(1,506)
Income taxes payable	25	(78)
Other current liabilities, net	(77)	(856)
Net cash provided by (used in) operating activities	4,372	(700)
Cash Flows from Investing Activities:
Proceeds from notes receivable	0	983
Property and equipment acquired	(45)	(313)
Net cash provided by (used in) investing activities	(45)	670
Cash Flows from Financing Activities:
Debt issuance costs	0	(4)
Purchase of treasury stock	(253)	0
Payments on capitalized leases	(95)	(150)
Net cash used in financing activities	(348)	(154)
Net change in cash	3,979	(184)
Cash and cash equivalents, at beginning of period	7,806	6,213
Cash and cash equivalents, at end of period	11,785	6,029
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	38	58
Cash paid during the period for income taxes (net of refunds)	20	170
Supplemental disclosure of noncash investing activities:
Property and equipment purchased through capital lease assignment	$ 0	$ 168