Schedule of Segment Reporting Information, by Segment Balance Sheet Item (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jul. 31, 2014
Segment Reporting Information [Line Items]
Total assets	$ 1,550,262	$ 1,408,718
Continuing Operations | Recreation Vehicles
Segment Reporting Information [Line Items]
Total assets	1,202,689	1,038,268
Continuing Operations | Recreation Vehicles | Towables
Segment Reporting Information [Line Items]
Total assets	995,488	868,017
Continuing Operations | Recreation Vehicles | Motorized
Segment Reporting Information [Line Items]
Total assets	207,201	170,251
Continuing Operations | Corporate
Segment Reporting Information [Line Items]
Total assets	$ 347,573	$ 370,450