Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Cash Flows from Operating Activities:
Net loss	$ (1,200)	$ (878)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	156	269
Share-based compensation expense	76	75
Deferred tax		(848)
Changes in current assets and liabilities:
Trade accounts receivable	(474)	2,474
Contract assets	596	(995)
Other current assets	378	176
Accounts payable	(370)	(976)
Accrued compensation and benefits	(475)	(259)
Contract liabilities	(1,041)	102
Income taxes payable	14	96
Other current liabilities, net	(491)	(109)
Net cash used in operating activities	(2,831)	(873)
Cash Flows from Investing Activities:
Proceeds from notes receivable	4	10
Property and equipment acquired	(8)	(408)
Net cash used in investing activities	(4)	(398)
Cash Flows from Financing Activities:
Payments on capitalized leases	(46)	(43)
Net cash used in financing activities	(46)	(43)
Net change in cash, cash equivalents and restricted cash	(2,881)	(1,314)
Cash, cash equivalents and restricted cash, at beginning of period	9,648	15,687
Cash, cash equivalents and restricted cash, at end of period	6,767	14,373
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	9	65
Cash paid (received) during the period for income taxes (net of refunds)	$ 2	$ (107)