Amortizable Intangible Assets and Unamortizable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Apr. 30, 2016
Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	$ 25,410	$ 25,306
Accumulated Amortization	(23,991)	(23,163)
Total	1,419	2,143
Unamortizable intangible assets	309,294	313,134
Total amortizable and unamortizable, intangible assets	310,713	315,277	$ 310,904
Trade name
Intangible Assets by Major Class [Line Items]
Unamortizable intangible assets	293,400	293,400
Publishing contracts
Intangible Assets by Major Class [Line Items]
Unamortizable intangible assets	15,894	19,734
Technology
Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	10,710	10,710
Accumulated Amortization	(9,691)	(9,225)
Total	$ 1,019	$ 1,485
Technology | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life	5 years	5 years
Technology | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life	10 years	10 years
Distribution contracts
Intangible Assets by Major Class [Line Items]
Useful Life	10 years	10 years
Gross Carrying Amount	$ 8,325	$ 8,325
Accumulated Amortization	(7,979)	(7,683)
Total	346	642
Other
Intangible Assets by Major Class [Line Items]
Gross Carrying Amount	6,375	6,271
Accumulated Amortization	(6,321)	(6,255)
Total	$ 54	$ 16
Other | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life	3 years	3 years
Other | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life	10 years	10 years