Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 65,469	$ 42,572	$ 38,629
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	20,178	19,177	19,396
Provision for uncollectible accounts receivable	903	771	589
Deferred income taxes	(2,063)	1,911	1,384
Share-based compensation expense	5,458	6,186	5,616
Foreign currency transaction loss (gain)	2,274	(1,934)	1,102
Other, net	695	(828)	288
Changes in assets and liabilities:
Receivables	(47,514)	(11,535)	(9,523)
Inventories	(53,803)	(38,158)	(14,039)
Other current assets	1,220	(8,132)	(6,612)
Accounts payable	13,832	17,993	(691)
Other current liabilities	186	18,433	16,673
Other noncurrent assets and liabilities	(3,787)	(2,488)	(6,778)
Net cash provided by operating activities	3,048	43,968	46,034
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(15,595)	(26,511)	(21,445)
Proceeds from sale of assets held-for-sale	0	0	3,955
Purchases of marketable securities available-for-sale	(18,468)	(19,356)	(28,041)
Proceeds from maturities of marketable securities available-for-sale	25,968	18,825	8,548
Acquisition of business, net of cash acquired	0	0	(3,034)
Other investing activities, net	(855)	(577)	1,503
Net cash used in investing activities	(8,950)	(27,619)	(38,514)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	2,894	3,965	1,545
Common stock withheld for payroll tax obligations	(1,181)	(1,269)	(1,111)
Proceeds from employee stock purchase plan	412	0	0
Principal payments on long-term debt	(218)	(195)	(227)
Dividends paid	(14,599)	(14,166)	(13,645)
Net cash used in financing activities	(12,692)	(11,665)	(13,438)
Effect of exchange rate changes on cash and cash equivalents	(3,465)	1,020	117
Net change in cash and cash equivalents	(22,059)	5,704	(5,801)
Cash and cash equivalents, beginning of period	127,107	121,403	127,204
Cash and cash equivalents, end of period	105,048	127,107	121,403
SUPPLEMENTAL CASH FLOW INFORMATION
Income taxes paid	15,738	6,805	7,314
Interest paid	3,811	4,640	4,673
NONCASH INVESTING ACTIVITIES
Issuance of notes receivable from sale of business	0	2,051	0
Earn-out liability related to business acquisition	0	0	1,195
Holdback related to business acquisition	$ 0	$ 0	$ 300