CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Operating activities:
Net income	$ 112,369	$ 131,258	$ 91,060
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	23,437	23,799	25,442
Stock-based compensation expense	8,843	12,092	9,980
Gain on sale of business, net	0	0	(4,666)
Deferred income taxes	(764)	7,825	33,656
Income (Loss) from Equity Method Investments	246	0	0
Other Noncash Income (Expense)	2,611	2,347	(15)
Changes in operating assets and liabilities (net of effects of business acquisitions/divestitures):
Accounts receivable	13,902	3,496	(16,612)
Inventories	(13,917)	(9,922)	(7,563)
Prepaid expenses and other assets	4,477	368	1,747
Accounts payable and accrued liabilities	(26,128)	(11,903)	13,106
Income taxes	2,080	2,851	(3,093)
Net cash provided by operating activities	140,977	162,211	143,042
Investing activities:
Purchases of property, plant and equipment	(27,277)	(32,825)	(21,777)
Payments to Acquire Equity Method Investments	(6,000)	0	0
Sale of business, net of cash transferred with business	0	0	19,141
Other	(2,842)	(1,638)	(269)
Net cash used in investing activities	(36,119)	(34,463)	(2,905)
Financing activities:
Payment of dividends	(45,756)	(44,732)	(42,873)
Proceeds from exercise of stock options	5,511	25,658	12,999
Payment, Tax Withholding, Share-based Payment Arrangement	(9,065)	(5,651)	(3,936)
Purchase of treasury stock	(64,514)	(3,182)	(1,462)
Proceeds from borrowing on credit facilities	20,697	13,637	23,221
Repayment of borrowing on credit facilities	21,855	13,568	78,419
Principal payments on debt	(48,672)	0	0
Other	134	210	(210)
Net cash used in financing activities	(163,520)	(27,628)	(90,680)
Effect of exchange rate changes on cash and cash equivalents	(2,767)	(2,475)	(1,974)
Net (decrease) increase in cash and cash equivalents	(61,429)	97,645	47,483
Cash and cash equivalents, beginning of period	279,072	181,427	133,944
Cash and cash equivalents, end of period	217,643	279,072	181,427
Cash paid during the period for:
Interest	2,401	2,651	2,976
Income taxes	$ 29,600	$ 24,335	$ 33,267