Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Income Statement [Abstract]
Net sales	$ 2,158,785	$ 1,755,976
Cost of products sold	1,849,974	1,548,720
Gross profit	308,811	207,256
Selling, general and administrative expenses	188,464	102,693
Amortization of intangible assets	24,293	12,591
Acquisition-related costs	0	57,089
Interest income	975	1,222
Interest expense	28,025	876
Other income (expense), net	(370)	(3,712)
Income before income taxes	68,634	31,517
Income taxes	16,789	17,564
Net income	51,845	13,953
Less: Net income attributable to non-controlling interest	780	0
Net income attributable to Thor Industries, Inc.	$ 51,065	$ 13,953
Weighted-average common shares outstanding:
Basic (in shares)	55,095,074	52,726,496
Diluted (in shares)	55,224,655	52,899,603
Earnings per common share:
Basic (in dollars per share)	$ 0.93	$ 0.26
Diluted (in dollars per share)	0.92	0.26
Regular dividends declared and paid per common share (in dollars per share)	$ 0.40	$ 0.39
Comprehensive income:
Net income	$ 51,845	$ 13,953
Other comprehensive income (loss), net of tax
Foreign currency translation adjustment	993	0
Unrealized loss on derivatives, net of tax	(3,722)	0
Total other comprehensive loss, net of tax	(2,729)	0
Total Comprehensive income	49,116	13,953
Less: Comprehensive income attributable to non-controlling interest	638	0
Comprehensive income attributable to Thor Industries, Inc.	$ 48,478	$ 13,953