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	Feb. 28, 2018	Aug. 31, 2017
Derivative [Line Items]
Derivative Asset, Noncurrent	$ 4,030	$ 2,547
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	3,360	1,865
Net Tax Effect	(863)	(735)
Total Net OCI	2,497	1,130
Interest Rate Swap [Member] | Other Non-current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	1,964
Net Tax Effect	(440)
Total Net OCI	1,524
Interest Rate Swap [Member] | Other Long-Term Liability [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent		(231)
Net Tax Effect		80
Total Net OCI		(151)
Cross Currency Interest Rate Swaps [Member] | Other Non-current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Asset, Noncurrent	2,066	2,547
Net Tax Effect	(624)	(950)
Total Net OCI	1,442	1,597
Cross Currency Interest Rate Swaps [Member] | Other Long-Term Liability [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent	(670)	(451)
Net Tax Effect	201	135
Total Net OCI	$ (469)	$ (316)