ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI by Components) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 28, 2018	Feb. 28, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (78,342)	$ (134,512)	$ (81,513)	$ (112,914)
Other comprehensive income before reclassifications	11,961	9,861	14,809	(11,538)
Amounts reclassified from AOCI	(106)	(339)	413	(538)
Income taxes	21		(175)
Other comprehensive income (loss)	11,876	9,522	15,047	(12,076)
Ending balance	(66,466)	(124,990)	(66,466)	(124,990)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(77,943)	(133,786)	(80,778)	(112,255)
Other comprehensive income before reclassifications	11,943	9,551	14,778	(11,980)
Amounts reclassified from AOCI	0	0	0	0
Income taxes	0		0
Other comprehensive income (loss)	11,943	9,551	14,778	(11,980)
Ending balance	(66,000)	(124,235)	(66,000)	(124,235)
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1,492	2,128	1,587	2,186
Other comprehensive income before reclassifications	18	310	31	442
Amounts reclassified from AOCI	(97)	(330)	(243)	(520)
Income taxes	19		57
Other comprehensive income (loss)	(60)	(20)	(155)	(78)
Ending balance	1,432	2,108	1,432	2,108
Defined Benefit Obligation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,891)	(2,854)	(2,322)	(2,845)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from AOCI	(9)	(9)	656	(18)
Income taxes	2		(232)
Other comprehensive income (loss)	(7)	(9)	424	(18)
Ending balance	$ (1,898)	$ (2,863)	$ (1,898)	$ (2,863)