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Discontinued Operations (Components of Assets and Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 27, 2014
Dec. 28, 2013
Discontinued Operations and Disposal Groups [Abstract]    
Accounts receivable, net $ 0 $ 9
Prepaid and other current assets 20 123
Assets of discontinued operations - current 20 132
Property, plant and equipment, net 0 33
Assets of discontinued operations - long-term 0 33
Accrued compensation and related liabilities 85 627
Other current liabilities 0 1,386
Liabilities of discontinued operations - current 85 2,013
Net assets $ (65) $ (1,848)