Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net earnings	$ 9,644	$ 12,927	$ 12,459	$ 29,490
Other comprehensive income (loss):
Defined benefit pension plan adjustment, net of tax	33	33	71	97
Unrealized gain on cash flow hedges, net of tax	76
Foreign currency translation adjustment, net of hedging activities and tax	1,804	(2,638)	(269)	(10,909)
Total other comprehensive gain (loss), net of tax expense (benefit) of ($138), $136, $253 and $1,873	1,913	(2,605)	(198)	(10,812)
Total comprehensive income	$ 11,557	$ 10,322	$ 12,261	$ 18,678