Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 72,379	$ 65,469	$ 42,572
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	19,282	20,178	19,177
Provision for uncollectible accounts receivable	881	903	771
Deferred income taxes	0	(2,063)	1,911
Share-based compensation expense	6,529	5,458	6,186
Foreign currency transaction loss (gain)	1,126	2,274	(1,934)
Other, net	1,569	695	(828)
Changes in assets and liabilities:
Receivables	(4,926)	(47,514)	(11,535)
Inventories	40,954	(53,803)	(38,158)
Other current assets	4,693	1,220	(8,132)
Accounts payable	(15,274)	13,832	17,993
Other current liabilities	(9,135)	186	18,433
Other noncurrent assets and liabilities	1,629	(3,787)	(2,488)
Net cash provided by operating activities	119,707	3,048	43,968
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(18,775)	(15,595)	(26,511)
Purchases of marketable securities available-for-sale	(4,932)	(18,468)	(19,356)
Proceeds from maturities of marketable securities available-for-sale	10,982	25,968	18,825
Acquisition of business, net of cash acquired	(30,842)	0	0
Other investing activities, net	(3,850)	(855)	(577)
Net cash used in investing activities	(47,417)	(8,950)	(27,619)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	32	2,894	3,965
Common stock withheld for payroll tax obligations	(2,471)	(1,181)	(1,269)
Proceeds from employee stock purchase plan	444	412	0
Principal payments on long-term debt	(222)	(218)	(195)
Dividends paid	(15,082)	(14,599)	(14,166)
Net cash used in financing activities	(17,299)	(12,692)	(11,665)
Effect of exchange rate changes on cash and cash equivalents	716	(3,465)	1,020
Net change in cash and cash equivalents	55,707	(22,059)	5,704
Cash and cash equivalents, beginning of period	105,048	127,107	121,403
Cash and cash equivalents, end of period	160,755	105,048	127,107
SUPPLEMENTAL CASH FLOW INFORMATION
Income taxes paid	20,305	15,738	6,805
Interest paid	3,907	3,811	4,640
NONCASH INVESTING ACTIVITIES
Issuance of notes receivable from sale of business	$ 0	$ 0	$ 2,051