Discontinued Operations - Summary of Assets and Liabilities Held For Sale (Detail) - USD ($) $ in Thousands	Jan. 30, 2016	Apr. 25, 2015
Assets held for sale
Receivables, net of allowance for doubtful accounts		$ 57,876
Inventory		48,265
Prepaid expenses and other current assets		12,206
Property and equipment, net		22,672
Goodwill		537,175
Identifiable intangibles, net		74,804
Other long-term assets		1,143
Total assets held for sale	$ 0	754,141
Liabilities held for sale
Accounts payable		26,341
Accrued liabilities and other current liabilities		12,975
Long-term liabilities	$ 0	49,414
Total liabilities held for sale		$ 88,730