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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2017	Nov. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 36,810	$ 6,275
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustment	2,835	(21,531)
Net unrealized gain (loss) on derivatives:
Unrealized holding gain	11	132
Reclassification for gain included in net earnings	(106)	(190)
Net unrealized loss on derivatives	(95)	(58)
Defined benefit obligation:
Amortization of prior service credit	(6)	(9)
Reclassification for loss on settlement included in net earnings	437	0
Defined benefit obligation	431	(9)
Other comprehensive income (loss)	3,171	(21,598)
Comprehensive income (loss)	$ 39,981	$ (15,323)

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