Provision for Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Assets
Employee benefits	$ 24	$ 39
Valuation reserves	869	1,782
Property and equipment	(175)	(129)
Stock based compensation	178	224
Federal and state credits	382	287
Net operating loss carry forward	1	0
Total assets	1,279	2,203
Liabilities
Unrealized equity investment income	0	(2,025)
Goodwill and intangible assets	(3,465)	(4,697)
Prepaid insurance	(123)	(228)
Total liabilities	(3,588)	(6,950)
Valuation Allowance
Beginning balance	(411)	(435)
Decrease during period	251	24
Ending balance	(160)	(411)
Deferred Tax Assets, Net	$ (2,469)	$ (5,158)