Pension and Other Postretirement Benefit Plans - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended				12 Months Ended
	Mar. 28, 2016 USD ($)	Mar. 31, 2016 USD ($) Employee	Jul. 30, 2016 USD ($)	Aug. 01, 2015 USD ($)	Jan. 31, 2015 USD ($) Employee	Aug. 02, 2014 USD ($)	Apr. 30, 2016 Employee	May 02, 2015 USD ($)
Pension and Other Postretirement Benefit Plans [Line Items]
Increase in pension liability						$ 15,747		$ 3,062
(Increase) decrease in other comprehensive income, before tax						$ (15,747)		$ 6,503
Number of terminated vested participants elected to receive lump sum payments | Employee					735
Lump sum payments made to plan participants					$ 15,190
Pension plan settlement charge		$ 18,100
Number of remaining active and terminated vested participants elected to receive lump sum payments | Employee							2,300
Number of remaining active and terminated vested participants received lump sum payments | Employee		1,800
Benefits for the remaining plan population transferred to Massachusetts Mutual Life Insurance Company	$ 34,500
Pension expense			$ 0	$ 1,247
Pension liabilities, current			0	13,008
Company contributions, employee benefit expenses			3,387	3,511
Company contributions for postretirement plan			$ (97)	$ 38
Selling and Administrative Expenses
Pension and Other Postretirement Benefit Plans [Line Items]
Pension plan settlement charge					$ 7,317