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Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
6 Months Ended
Jul. 04, 2015
USD ($)
Segment
Dec. 31, 2014
USD ($)
Jun. 28, 2014
USD ($)
Dec. 31, 2013
USD ($)
Accounting Policies [Abstract]        
Number of reportable segments | Segment 2      
Number of operating segments | Segment 2      
Cash equivalent maturity period 3 months      
Debt issuance costs $ 6,900      
Total long-term debt $ 265,012 $ 290,026 $ 317,664 $ 290,026