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Equity-Based Compensation - Summary of Service-Based Restricted Stock Units (Details) - Service-Based RSUs
9 Months Ended
Sep. 27, 2015
$ / shares
shares
Officers, key employees, and non-employee directors  
Share-based Compensation  
Number of shares issuable, against each unit of RSU 1
Summary of Service-Based Restricted Stock Units  
Outstanding at beginning of year 517,965
Granted 125,525
Converted (165,801)
Forfeited (26,794)
Outstanding at end of year 450,895
Beginning of year, Weighted-average Grant-Date Fair Value | $ / shares $ 12.06
Granted, Weighted-average Grant-Date Fair Value | $ / shares 17.10
Converted, Weighted-average Grant-Date Fair Value | $ / shares 12.41
Forfeited, Weighted-average Grant-Date Fair Value | $ / shares 17.20
End of year, Weighted-average Grant-Date Fair Value | $ / shares $ 13.03
Certain executives and key employees  
Share-based Compensation  
Vesting period 3 years
Non-employee directors  
Share-based Compensation  
Vesting period 1 month