CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021
Current assets:
Cash and cash equivalents	$ 147,407	$ 147,335
Accounts receivable, net of allowances for credit losses of $7,868 and $7,306, respectively	172,471	170,579
Inventories	167,456	136,107
Prepaid expenses and other current assets	12,681	11,083
Total current assets	500,015	465,104
Assets, Noncurrent [Abstract]
Property, plant and equipment—net	126,551	121,741
Goodwill	601,681	614,137
Other intangible assets	83,608	92,334
Deferred income taxes	15,234	16,343
Operating lease assets	33,710	41,880
Other assets	26,264	26,217
Total	1,387,063	1,377,756
Current liabilities:
Accounts payable	80,611	82,152
Accrued compensation and benefits	56,510	81,173
Taxes, other than income taxes	12,141	13,054
Accrued income taxes	4,783	3,915
Current operating lease liabilities	16,601	17,667
Other current liabilities	56,850	59,623
Total current liabilities	227,496	257,584
Liabilities, Noncurrent [Abstract]
Long-term debt	83,000	38,000
Long-term operating lease liabilities	20,341	28,347
Other liabilities	89,658	90,797
Total liabilities	420,495	414,728
Stockholders’ equity:
Additional paid-in capital	341,889	339,125
Retained earnings	833,981	788,369
Treasury stock—3,018,140 and 2,733,242 shares, respectively, of Class A nonvoting common stock, at cost	(130,911)	(109,061)
Accumulated other comprehensive loss	(78,939)	(55,953)
Total stockholders’ equity	966,568	963,028
Total	1,387,063	1,377,756
Class A Nonvoting Common Stock [Member]
Stockholders’ equity:
Common Stock, Value, Issued	513	513
Class B Voting Common Stock [Member]
Stockholders’ equity:
Common Stock, Value, Issued	$ 35	$ 35