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Correction (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 30, 2017
Correction    
Non-current liabilities $ 34,507 $ 32,547
Deferred compensation and other non-current liabilities 11,482 11,526
Deferred rent and facility-related non-current liabilities 22,625 $ 20,656
As previously reported    
Correction    
Deferred compensation and other non-current liabilities 20,656  
Deferred rent and facility-related non-current liabilities 11,526  
As revised    
Correction    
Non-current liabilities 0  
Total liabilities 0  
Deferred compensation and other non-current liabilities 11,526  
Deferred rent and facility-related non-current liabilities $ 20,656