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Commitments and Contingencies (Details)
$ in Thousands
3 Months Ended
Apr. 19, 2016
USD ($)
ft²
Mar. 28, 2016
USD ($)
Mar. 31, 2015
USD ($)
Business Acquisition, Contingent Consideration [Line Items]      
Period of lease   64 months  
Annual rent   $ 333  
Subsequent event      
Business Acquisition, Contingent Consideration [Line Items]      
Period of lease 74 months    
Annual rent $ 618    
Total leased space | ft² 116,592    
Cash and cash equivalents | Standby letters of credit      
Business Acquisition, Contingent Consideration [Line Items]      
Standby letter of credit   $ 342  
Selling, general, and administrative | Settled litigation      
Business Acquisition, Contingent Consideration [Line Items]      
Expense, selling, general and administrative     $ (240)