DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities (Details) (USD $)	12 Months Ended								12 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012	Dec. 11, 2012	Feb. 21, 2012	Nov. 17, 2011	May 05, 2011	Nov. 20, 2008	Aug. 31, 2014 Interest Rate Swap [Member]	Aug. 31, 2013 Interest Rate Swap [Member]	Aug. 31, 2014 Cross Currency Interest Rate Contract [Member]	Aug. 31, 2013 Cross Currency Interest Rate Contract [Member]	Aug. 31, 2014 Forward Foreign Exchange Contracts [Member]	Aug. 31, 2013 Forward Foreign Exchange Contracts [Member]	Aug. 31, 2012 Forward Foreign Exchange Contracts [Member]	Aug. 31, 2014 RBTT [Member]	Aug. 31, 2013 RBTT [Member]	Aug. 31, 2014 Scotiabank [Member]	Aug. 31, 2013 Scotiabank [Member]	Aug. 31, 2014 Fair Value, Measurements, Recurring [Member] Forward Foreign Exchange Contracts [Member]		Aug. 31, 2013 Fair Value, Measurements, Recurring [Member] Forward Foreign Exchange Contracts [Member]		Aug. 31, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Aug. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Aug. 31, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Interest Rate Swap [Member]		Aug. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Interest Rate Swap [Member]		Aug. 31, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Cross Currency Interest Rate Contract [Member]		Aug. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Cross Currency Interest Rate Contract [Member]		Aug. 31, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Forward Foreign Exchange Contracts [Member]		Aug. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Forward Foreign Exchange Contracts [Member]		Oct. 21, 2011 Colombia $6M Cross Currency Interest Rate Swap [Member]	Aug. 01, 2014 Panama $5M Interest Rate Swap [Member]	May 22, 2014 Panama $20M Interest Rate Swap [Member]	Oct. 21, 2011 Colombia $2M Cross currency interest rate swap [Member]	May 22, 2014 Panama $4M Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Current																				$ (14,000)	[1]	$ 0	[1]													$ (14,000)	[1]	$ 0	[1]
Derivative Asset, Current																																495,000	[2],[3]	0	[2],[3]
Derivative Asset, Noncurrent																												(125,000)	[4]	0	[4]	(970,000)	[2],[3]	(1,505,000)	[2],[3]
Derivative Liability, Noncurrent																												0	[4]	(14,000)	[4]
Document Fiscal Year Focus	2014
Derivative Assets (Liabilities), at Fair Value, Net																				(14,000)	[1]	0		1,590,000	[1]	1,491,000	[1]									(14,000)	[1]	0	[1]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net									(94,000)	10,000	(917,000)	(1,000,000)
Other Comprehensive Income (Loss), Tax									(31,000)	4,000	(548,000)	(497,000)
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	11,825,000	12,871,000
Derivative, Fixed Interest Rate				4.79%	6.02%	5.85%	6.09%	7.05%																																5.45%	4.89%	4.98%	5.30%	4.98%
Derivative, Notional Amount				8,000,000	8,000,000	8,000,000	8,000,000	8,900,000					3,000,000																											6,000,000	5,000,000	19,800,000	2,000,000	3,970,000
interest expense (variable) on borrowings for derivatives	674,000	739,000	767,000
Gain (Loss) on Derivative Instruments, Net, Pretax	1,632,000	1,821,000	1,356,000										(463,000)	(580,000)	(73,000)
interest expense (fixed) on borrowings of derivatives	2,306,000	2,560,000	2,123,000
Derivative Liability, Notional Amount	$ 60,200,000	$ 44,500,000														$ 0	$ 4,500,000	$ 60,200,000	$ 40,000,000

[1] (4) Derivatives listed on the above table were designated as cash flow hedging instruments.

[2] (2) The Company has recorded a deferred tax liability amount with an offset to other comprehensive income of $(548,000) and $(497,000) as of August 31, 2014 and August 31, 2013, respectively, related to asset positions of cross-currency interest rate swaps. However, the equity effect of this deferred tax liability is offset by the full valuation allowance provided for the net deferred tax asset recorded for this subsidiary.

[3] (1) The effective portion of the cross-currency interest rate swaps was recorded to Accumulated other comprehensive (income)/loss for $(917,000) and $(1.0) million net of tax as of August 31, 2014 and August 31, 2013, respectively.

[4] (3) The effective portion of the interest rate swaps was recorded to Accumulated other comprehensive loss for $(94,000) and $10,000 net of tax as of August 31, 2014 and August 31, 2013, respectively. The Company has recorded a deferred tax (liability)/asset amount with an offset to other comprehensive income of $(31,000) and $4,000 as of August 31, 2014 and August 31, 2013, respectively.