Pension and Other Postretirement Benefit Plans - Additional Information (Detail)		1 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended
	Mar. 28, 2016 USD ($)	Mar. 31, 2016 USD ($) Employee	Oct. 29, 2016 USD ($)	Oct. 31, 2015 USD ($)	Jan. 31, 2015 USD ($) Employee	Aug. 02, 2014 USD ($)	Oct. 29, 2016 USD ($)	Oct. 31, 2015 USD ($)	Apr. 30, 2016 Employee	May 02, 2015 USD ($)
Pension and Other Postretirement Benefit Plans [Line Items]
Increase in pension liability						$ 15,747,000				$ 3,062,000
(Increase) decrease in other comprehensive income, before tax						$ (15,747,000)				$ 6,503,000
Number of terminated vested participants elected to receive lump sum payments | Employee					735
Lump sum payments made to plan participants					$ 15,190,000
Pension plan settlement charge		$ 18,100,000
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	$ 34,500,000
Pension expense			$ 450,000	$ 1,435,000			$ 450,000	$ 2,682,000
Pension liabilities, current			0	11,799,000			0	11,799,000
Company contributions, employee benefit expenses			$ 2,774,000	$ 2,661,000			$ 6,161,000	$ 6,173,000
Selling and Administrative Expenses
Pension and Other Postretirement Benefit Plans [Line Items]
Pension plan settlement charge					$ 7,317,000