Reorganization - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 28, 2015
Dec. 27, 2014
Reorganization Items [Line Items]    
Number of LP Units outstanding 69,007,297  
Class A common stock issued at IPO   28,571,429
Vesting period of leverage restoration options 4 years  
2015 Omnibus Equity Incentive Plan [Member]    
Reorganization Items [Line Items]    
Percentage of performance-vesting options 25.00%  
General and Administrative Expense Costs [Member]    
Reorganization Items [Line Items]    
Modification charge recognized in general and administrative costs $ 14.5  
Common Class A [Member]    
Reorganization Items [Line Items]    
Class A common stock issued at IPO 1,029,183  
Common Class A [Member] | 2015 Omnibus Equity Incentive Plan [Member]    
Reorganization Items [Line Items]    
Number of class A common stock issued under the Omnibus Incentive Plan 240,000  
Exercise price per share under the Omnibus Incentive Plan $ 18.00  
Initial Public Offering [Member] | Common Class A [Member]    
Reorganization Items [Line Items]    
Class A common stock issued at IPO 25,555,555  
Class A Common stock offering price per share $ 18.00  
Class C Units [Member] | Common Class A [Member]    
Reorganization Items [Line Items]    
Class A common stock issued at IPO 160,333  
Class D Units [Member] | Common Class A [Member]    
Reorganization Items [Line Items]    
Class A common stock issued at IPO 4,358,842