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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
Cash Flows From Operating Activities
Net income	$ 48,307	$ 60,882	$ 59,475
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	23,694	21,041	18,396
Deferred income taxes	(4,695)	(640)	1,601
Share-based compensation	7,154	6,437	6,468
Changes in operating assets and liabilities, net of business acquisitions:
Accounts receivable	(7,798)	(2,595)	(2,881)
Inventories	(21,072)	2,450	(10,011)
Prepaid expenses and other assets	(4,054)	(3,386)	(1,017)
Accounts payable	10,215	(3,206)	6,745
Accruals and other changes	16,287	106	7,102
Net Cash From Operating Activities	68,038	81,089	85,878
Cash Flows for Investing Activities
Purchase of property, equipment and other non-current intangible assets	(24,429)	(26,712)	(24,052)
Proceeds from the maturities of marketable securities	381,839	764,597	406,731
Purchase of marketable securities	(415,894)	(792,678)	(458,300)
Business acquisitions, net of cash acquired	(38,745)	(50,771)	(13,164)
Net Cash for Investing Activities	(97,229)	(105,564)	(88,785)
Cash Flows From Financing Activities
Exercise of stock options and other	7,933	34,631	29,405
Payment of contingent consideration	(1,120)	(1,087)	0
Net Cash From Financing Activities	6,813	33,544	29,405
Effects of Foreign Exchange Rate on Cash	(8,751)	264	(1,917)
Net (Decrease) Increase in Cash and Cash Equivalents	(31,129)	9,333	24,581
Cash and Cash Equivalents, Beginning of Year	75,602	66,269	41,688
Cash and Cash Equivalents, End of Year	44,473	75,602	66,269
Supplementary Cash Flow Information
Income taxes paid, net of refunds	$ 17,242	$ 14,966	$ 7,364

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