CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Net earnings (loss)	$ 198,093	$ 138,506	$ 46,332
Foreign currency translation adjustment:
Foreign currency translation adjustment	(29,718)	(13,938)	30,509
Reclassification for translation loss realized upon liquidation of investment in foreign entity	857	2,079	968
Foreign currency translation adjustment	(28,861)	(11,859)	31,477
Net unrealized gain (loss) on derivatives:
Unrealized holding gain (loss)	(6)	48	756
Reclassification for gain included in net earnings	(244)	(279)	(1,355)
Net unrealized loss on derivatives	(250)	(231)	(599)
Defined benefit obligation:
Net gain (loss)	(2,823)
Amortization of net loss	0	126	154
Amortization of prior services	(25)	(62)	(70)
Reclassification for settlement losses	1,316	0	0
Defined benefit obligation	(1,338)	(74)	523
Other comprehensive income (loss)	(30,449)	(12,164)	31,401
Comprehensive income	167,644	126,342	77,733
Net gain (loss)	$ (2,629)	$ (138)	$ 439