ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI by Components) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (134,512)	$ (135,658)	$ (112,914)	$ (113,535)
Other comprehensive income (loss) before reclassifications	9,861	4,705	(11,538)	(17,299)
Amounts reclassified from AOCI	(339)	(58)	(538)	(177)
Other comprehensive income (loss)	9,522	4,647	(12,076)	(17,476)
Ending balance	(124,990)	(131,011)	(124,990)	(131,011)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(133,786)	(135,076)	(112,255)	(113,081)
Other comprehensive income (loss) before reclassifications	9,551	4,211	(11,980)	(17,784)
Amounts reclassified from AOCI	0	0	0	0
Other comprehensive income (loss)	9,551	4,211	(11,980)	(17,784)
Ending balance	(124,235)	(130,865)	(124,235)	(130,865)
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	2,128	2,178	2,186	2,305
Other comprehensive income (loss) before reclassifications	310	494	442	485
Amounts reclassified from AOCI	(330)	(56)	(520)	(174)
Other comprehensive income (loss)	(20)	438	(78)	311
Ending balance	2,108	2,616	2,108	2,616
Defined Benefit Obligation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(2,854)	(2,760)	(2,845)	(2,759)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCI	(9)	(2)	(18)	(3)
Other comprehensive income (loss)	(9)	(2)	(18)	(3)
Ending balance	$ (2,863)	$ (2,762)	$ (2,863)	$ (2,762)