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Long-Term Debt - Senior Notes (Details) - USD ($)
$ in Thousands
Nov. 27, 2018
Jan. 25, 2020
Jan. 26, 2019
Long-term Debt, by Current and Noncurrent [Abstract]      
Outstanding principal amount   $ 343,340 $ 346,202
Restricted net assets   608,600  
First Lien Agreement      
Long-term Debt, by Current and Noncurrent [Abstract]      
Outstanding principal amount $ 339,500    
Term Loan      
Long-term Debt, by Current and Noncurrent [Abstract]      
Additional borrowings 50,000    
Outstanding principal amount   $ 335,982 $ 339,500
Repayment of borrowings $ 49,600