Schedule of Segment Reporting Information, by Segment Balance Sheet Item (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 1,697,880	$ 1,503,248
Continuing Operations | Corporate
Segment Reporting Information [Line Items]
Total assets	327,450	272,058
Continuing Operations | Operating Segments | Recreational vehicles
Segment Reporting Information [Line Items]
Total assets	1,207,530	1,070,115
Continuing Operations | Operating Segments | Recreational vehicles | Towables
Segment Reporting Information [Line Items]
Total assets	971,768	907,175
Continuing Operations | Operating Segments | Recreational vehicles | Motorized
Segment Reporting Information [Line Items]
Total assets	235,762	162,940
Continuing Operations | Operating Segments | Other
Segment Reporting Information [Line Items]
Total assets	$ 162,900	$ 161,075