ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI by Components) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (116,585)	$ (102,201)	$ (124,126)	$ (93,677)
Other comprehensive income before reclassifications	(5,581)	454	2,215	(9,266)
Amounts reclassified from AOCI	(106)	829	(216)	2,354
Income taxes	882	31	737	(298)
Other comprehensive income (loss)	(4,805)	1,314	2,736	(7,210)
Ending balance	(121,390)	(100,887)	(121,390)	(100,887)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(114,574)	(102,393)	(121,498)	(92,637)
Other comprehensive income before reclassifications	(1,066)	514	5,858	(9,143)
Amounts reclassified from AOCI	(2)	936	(2)	837
Income taxes	0	0	0	0
Other comprehensive income (loss)	(1,068)	1,450	5,856	(8,306)
Ending balance	(115,642)	(100,943)	(115,642)	(100,943)
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1,731	1,279	1,106	1,356
Other comprehensive income before reclassifications	(4,501)	(52)	(3,619)	(104)
Amounts reclassified from AOCI	(104)	(107)	(214)	(149)
Income taxes	876	31	729	48
Other comprehensive income (loss)	(3,729)	(128)	(3,104)	(205)
Ending balance	(1,998)	1,151	(1,998)	1,151
Defined Benefit Obligation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(3,742)	(1,087)	(3,734)	(2,396)
Other comprehensive income before reclassifications	(14)	(8)	(24)	(19)
Amounts reclassified from AOCI	0	0	0	1,666
Income taxes	6	0	8	(346)
Other comprehensive income (loss)	(8)	(8)	(16)	1,301
Ending balance	$ (3,750)	$ (1,095)	$ (3,750)	$ (1,095)