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Business Acquisitions Sunrise, Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
May. 05, 2015
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Business Acquisition [Line Items]        
Gain on bargain purchase   $ 9,837 $ 0 $ 0
Sunrise        
Business Acquisition [Line Items]        
Total purchase price allocation $ 9,558      
Gain on bargain purchase 9,837      
Cash acquired in excess of payments to acquire business $ 100      
Purchase price allocation, period of adjustment, maximum   1 year    
Transaction and integration costs   $ 1,500    
Client relationships | Sunrise        
Business Acquisition [Line Items]        
Finite-lived intangible asset, useful life   15 years