Income Taxes (Components Of Provision (Benefit) For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Income Tax Disclosure [Abstract]
Current federal	$ 20,387	$ (13,467)	$ 24,309
Current state	4,935	(731)	8,539
Current Foreign Tax Expense (Benefit)	(8,460)	4,141	20,205
Total current	16,862	(10,057)	53,053
Deferred federal	(16,289)	12,597	16,983
Deferred state	(2,423)	4,266	5,282
Deferred Foreign Income Tax Expense (Benefit)	2,576	572	154
Deferred Income Tax Expense (Benefit)	(16,136)	17,435	22,419
Provision for income taxes	$ 726	$ 7,378	$ 75,472