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Fair Value Measurements - Summary of Estimated Fair Values of Long-term Debt Instruments, Warrant Liability and Interest Rate Cap Agreement (Detail) - Successor - 2015 Senior Credit Facility - USD ($)
$ in Thousands
Jan. 03, 2017
Dec. 29, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
2015 Senior Credit Facility $ 159,000  
Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
2015 Senior Credit Facility 157,616 $ 152,224
Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
2015 Senior Credit Facility $ 157,616 $ 152,224