DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value and Summary of Fair Value of Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	May 31, 2018	Aug. 31, 2017
Derivative [Line Items]
Derivative Asset, Noncurrent	$ 4,081	$ 2,547
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	3,544	1,865
Net Tax Effect	(913)	(735)
Net OCI	2,631	1,130
Cross Currency Interest Rate Swaps [Member] | Other Non-current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	2,046	2,547
Net Tax Effect	(618)	(950)
Net OCI	1,428	1,597
Cross Currency Interest Rate Swaps [Member] | Other Long-Term Liability [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent	(537)	(451)
Net Tax Effect	161	135
Net OCI	(376)	(316)
Interest Rate Swaps [Member] | Other Non-current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	2,035
Net Tax Effect	(456)
Net OCI	$ 1,579
Interest Rate Swaps [Member] | Other Long-Term Liability [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent		(231)
Net Tax Effect		80
Net OCI		$ (151)