Discontinued Operations - Summary of Assets and Liabilities Held For Sale (Detail) - USD ($) $ in Thousands	Aug. 01, 2015	Apr. 25, 2015
Assets held for sale
Receivables, net of allowance for doubtful accounts	$ 66,876	$ 57,876
Inventory	52,022	48,265
Prepaid expenses and other current assets	11,408	12,206
Property and equipment, net	22,489	22,672
Goodwill	537,985	537,175
Identifiable intangibles, net	74,484	74,804
Other long-term assets	1,798	1,143
Total assets held for sale	767,062	754,141
Liabilities held for sale
Accounts payable	30,108	26,341
Accrued liabilities and other current liabilities	9,415	12,975
Long-term liabilities	49,189	49,414
Total liabilities held for sale	$ 88,712	$ 88,730