Assets and liabilities measured at fair value (Detail) $ in Thousands	May 05, 2017 USD ($)
Reported amount | Current portion of long-term debt obligations
Liabilities:
Long-term obligations	$ 401,188
Reported amount | Long-term obligations
Liabilities:
Long-term obligations	2,632,090
Reported amount | Accrued expenses and other current liabilities
Liabilities:
Deferred compensation	1,267
Reported amount | Noncurrent Other liabilities
Liabilities:
Deferred compensation	20,785
Fair value measurements on recurring basis | Balance at the end of the period
Liabilities:
Long-term obligations	3,087,673
Deferred compensation	22,052
Fair value measurements on recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Liabilities:
Long-term obligations	2,433,451
Deferred compensation	22,052
Fair value measurements on recurring basis | Significant Other Observable Inputs (Level 2)
Liabilities:
Long-term obligations	$ 654,222