Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 20,277	$ 23,179	$ 20,267
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	16,514	16,678	16,881
Loss on sale of businesses	4,056
Provision for uncollectible accounts receivable	(2,587)	(574)	(843)
Deferred income taxes	(50)	(903)	(5,755)
Share-based compensation expense	3,891	3,598	3,060
Other, net	2,903	626	89
Changes in assets and liabilities:
Receivables	(3,714)	7,959	(4,730)
Inventories	(8,173)	(10,092)	1,330
Prepaid expenses and other current assets	(1,150)	4,581	(1,047)
Accounts payable	159	4,076	(7,101)
Other current liabilities	3,671	(3,821)	(1,043)
Other noncurrent assets and liabilities	(1,863)	(5,858)	12,017
Net cash provided by operating activities	33,934	39,449	33,125
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant, and equipment	(11,054)	(8,863)	(11,496)
Proceeds from sale of businesses	29,888
Proceeds from settlement of net investment hedges	2,278	2,117	3,381
Payments for settlement of net investment hedges	(3,089)	(3,466)	(2,924)
Other investing activities, net	82	233	1,141
Net cash provided by (used in) investing activities	18,105	(9,979)	(9,898)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	2,788	3,020	113
Common stock withheld for payroll tax obligations	(833)	(635)	(712)
Principal payments on long-term debt	(201)	(197)	(193)
Repurchase of common shares			(48,335)
Dividends paid	(13,006)	(12,490)	(12,244)
Net cash used in financing activities	(11,252)	(10,302)	(61,371)
Effect of exchange rate changes on cash and cash equivalents	(1,620)	1,206	297
Net change in cash and cash equivalents	39,167	20,374	(37,847)
Cash and cash equivalents, beginning of period	121,620	101,246	139,093
Cash and cash equivalents, end of period	160,787	121,620	101,246
SUPPLEMENTAL CASH FLOW INFORMATION
Income taxes paid	11,184	16,214	18,395
Interest paid	$ 4,626	$ 4,696	$ 4,674