CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 30, 2020	Jul. 31, 2019
Assets, Current [Abstract]
Cash and cash equivalents	$ 238,880	$ 279,072
Accounts receivable—net	145,133	158,114
Inventories	124,575	120,037
Prepaid expenses and other current assets	22,502	16,056
Total current assets	531,090	573,279
Property, plant and equipment—net	111,383	110,048
Goodwill	404,039	410,987
Other intangible assets	23,444	36,123
Deferred Income Tax Assets, Net	7,006	7,298
Operating Lease, Right-of-Use Asset	41,553	0
Other assets	21,827	19,573
Total	1,140,342	1,157,308
Current liabilities:
Accounts payable	58,819	64,810
Accrued compensation and benefits	41,591	62,509
Taxes, other than income taxes	7,667	8,107
Accrued income taxes	8,101	6,557
Operating Lease, Liability, Current	14,381	0
Other current liabilities	48,473	49,796
Total current liabilities	227,959	241,945
Operating Lease, Liability, Noncurrent	32,348	0
Long-term Debt, Current Maturities	48,927	50,166
Other liabilities	59,433	64,589
Total liabilities	319,740	306,534
Stockholders’ equity:
Class A nonvoting common stock—Issued 51,261,487 shares, and outstanding 48,431,617 and 49,458,841 shares, respectively	513	513
Class B voting common stock—Issued and outstanding, 3,538,628 shares	35	35
Additional paid-in capital	330,968	329,969
Retained earnings	688,079	637,843
Treasury stock—2,829,870 and 1,802,646 shares, respectively, of Class A nonvoting common stock, at cost	(106,751)	(46,332)
Accumulated other comprehensive loss	(92,242)	(71,254)
Total stockholders’ equity	820,602	850,774
Total	$ 1,140,342	$ 1,157,308