CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Condensed Statement of Income Captions [Line Items]
Net earnings	$ 29,012	$ 22,511	$ 16,017	$ 32,551
Other comprehensive (loss) income, net of tax
Foreign currency translation adjustments	(21,295)	20,385	(5,160)	(3,363)
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Related to Divested Business, Net Of Tax	0	0	67,645	0
Pension and other postretirement benefit plans	342	(61)	596	676
Total other comprehensive (loss) income, net of tax	(20,953)	20,324	63,081	(2,687)
Comprehensive income	$ 8,059	$ 42,835	$ 79,098	$ 29,864