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Discontinued Operations (Components of Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Jun. 27, 2015
Dec. 27, 2014
Discontinued Operations and Disposal Groups [Abstract]    
Prepaid and other current assets $ 37 $ 8
Assets of discontinued operations - current 37 8
Accrued compensation and related liabilities 104 70
Liabilities of discontinued operations - current 104 70
Net assets $ (67) $ (62)