Schedule of Segment Reporting Information, by Segment Balance Sheet Item (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Segment Reporting Information [Line Items]
Total assets	$ 2,325,464	$ 1,503,248	$ 1,408,718
Depreciation and amortization expense, total	52,575	31,381	25,834
Capital acquisitions	53,974	43,055	30,438
Continuing Operations | Corporate
Segment Reporting Information [Line Items]
Total assets	266,501	272,058	370,450
Depreciation and amortization expense, total	1,175	1,054	724
Capital acquisitions	2,495	3,271	7,519
Continuing Operations | Operating Segments | Recreational vehicles
Segment Reporting Information [Line Items]
Total assets	1,902,141	1,070,115	1,038,268
Depreciation and amortization expense, total	39,048	28,649	24,551
Capital acquisitions	48,680	39,348	22,856
Continuing Operations | Operating Segments | Recreational vehicles | Towables
Segment Reporting Information [Line Items]
Total assets	1,425,168	907,175	868,017
Depreciation and amortization expense, total	36,054	26,296	22,192
Capital acquisitions	37,489	35,039	16,914
Continuing Operations | Operating Segments | Recreational vehicles | Motorized
Segment Reporting Information [Line Items]
Total assets	476,973	162,940	170,251
Depreciation and amortization expense, total	2,994	2,353	2,359
Capital acquisitions	11,191	4,309	5,942
Continuing Operations | Operating Segments | Other
Segment Reporting Information [Line Items]
Total assets	156,822	161,075
Depreciation and amortization expense, total	12,352	1,678
Capital acquisitions	$ 2,799	$ 436
Discontinued Operations
Segment Reporting Information [Line Items]
Depreciation and amortization expense, total			559
Capital acquisitions			$ 63