Provision for Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015
Assets
Employee benefits	$ 39	$ 100
Valuation reserves	1,782	1,897
Property and equipment	(129)	259
Stock based compensation	224	268
Federal and state credits	287	259
Net operating loss carry forward	0	29
Total assets	2,203	2,812
Liabilities
Unrealized equity investment income	(2,025)	(3,192)
Goodwill and intangible assets	(4,697)	(4,720)
Prepaid insurance	(228)	(122)
Total liabilities	(6,950)	(8,034)
Valuation Allowance
Beginning balance	(435)	(435)
Decrease during period	24	0
Ending balance	(411)	(435)
Deferred Tax Assets, Net	$ (5,158)	$ (5,657)