Revenue Recognition - Additional Information (Detail) (USD $)	6 Months Ended
	Nov. 01, 2014	May 03, 2014	Oct. 26, 2013
Deferred Revenue Arrangement [Line Items]
Estimated life of NOOK, years	2 years
Nook
Deferred Revenue Arrangement [Line Items]
Recognized over	2 years
Deferred revenue	$ 5,230,000	$ 9,934,000	$ 12,816,000
Nook | Minimum
Deferred Revenue Arrangement [Line Items]
Average percent, NOOK's sales price	0.00%
Nook | Maximum
Deferred Revenue Arrangement [Line Items]
Average percent, NOOK's sales price	3.00%
Annual Fee
Deferred Revenue Arrangement [Line Items]
Non-refundable, after first 30 days, annual fee	$ 25