CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 31, 2020	Jul. 31, 2020
Current assets:
Cash and cash equivalents	$ 256,333	$ 217,643
Accounts receivable, net of allowance for credit losses of $7,704 and $7,157, respectively	156,735	146,181
Inventories	120,220	135,662
Prepaid expenses and other current assets	11,489	9,962
Total current assets	544,777	509,448
Assets, Noncurrent [Abstract]
Property, plant and equipment—net	119,960	115,068
Goodwill	412,718	416,034
Other intangible assets	20,910	22,334
Deferred income taxes	8,976	8,845
Operating lease assets	41,013	41,899
Other assets	27,353	28,838
Total	1,175,707	1,142,466
Current liabilities:
Accounts payable	62,907	62,547
Accrued compensation and benefits	55,410	41,546
Taxes, other than income taxes	8,497	8,057
Accrued income taxes	10,707	8,652
Current operating lease liabilities	16,097	15,304
Other current liabilities	51,343	49,782
Total current liabilities	204,961	185,888
Long-term operating lease liabilities	29,951	31,982
Other liabilities	60,394	61,524
Total liabilities	295,306	279,394
Stockholders’ equity:
Class A nonvoting common stock—Issued 51,261,487 shares, and outstanding 48,497,649 and 48,456,954 shares, respectively	513	513
Class B voting common stock—Issued and outstanding, 3,538,628 shares	35	35
Additional paid-in capital	332,121	331,761
Retained earnings	726,546	704,456
Treasury stock—2,763,838 and 2,804,533 shares, respectively, of Class A nonvoting common stock, at cost	(109,146)	(107,216)
Accumulated other comprehensive loss	(69,668)	(66,477)
Total stockholders’ equity	880,401	863,072
Total	$ 1,175,707	$ 1,142,466