DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities (Details) (USD $)	3 Months Ended			12 Months Ended
	Nov. 30, 2014		Nov. 30, 2013	Aug. 31, 2014		Dec. 11, 2012	Feb. 21, 2012	May 05, 2011	Oct. 21, 2011	Oct. 23, 2014	Aug. 01, 2014	May 22, 2014
Derivative [Line Items]
Derivative, Notional Amount						$ 8,000,000	$ 8,000,000	$ 8,000,000
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	9,449,000			11,825,000
Derivative, Fixed Interest Rate						4.79%	6.02%	6.09%
interest expense (variable) on borrowings for derivatives	349,000		126,000
interest expense (fixed) on borrowings of derivatives	861,000		557,000
Derivative Liability, Notional Amount	64,350,000			60,200,000
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	185,000			(94,000)
Other Comprehensive Income (Loss), Tax	61,000			(31,000)
Citibank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	5,000,000			0
Scotiabank [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	59,350,000			60,200,000
Assets [Member] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(3,600,000)			(917,000)
deferred tax liability [Member] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Tax	(1,800,000)			(548,000)
Liability [Member] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	194,000			0
Deferred Tax Asset [Domain] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Other Comprehensive Income (Loss), Tax	95,000			0
Colombia $6M Cross Currency Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount									6,000,000
Derivative, Fixed Interest Rate									5.45%
Honduras $5M Cross Currency Interest Rate Swap [Member] [Member]
Derivative [Line Items]
Derivative, Notional Amount										5,000,000
Derivative, Fixed Interest Rate										11.60%
Panama $5M Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount											5,000,000
Derivative, Fixed Interest Rate											4.89%
Panama $20M Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount												19,800,000
Derivative, Fixed Interest Rate												4.98%
Panama $4M Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount												3,970,000
Derivative, Fixed Interest Rate												4.98%
Colombia Cross currency interest rate swap [Member]
Derivative [Line Items]
Derivative, Notional Amount									2,000,000
Derivative, Fixed Interest Rate									5.30%
Derivative Swaps [Member]
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	512,000		431,000
Forward Foreign Exchange Contracts [Member]
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	2,613,000		123,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	4,884,000			1,590,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Forward Foreign Exchange Contracts [Member]
Derivative [Line Items]
Derivative Liability, Current	(7,000)			(14,000)
Derivative Asset, Current	1,484,000			0
Derivative Assets (Liabilities), at Fair Value, Net	1,477,000			(14,000)
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Asset, Current	1,493,000	[1],[2]		495,000	[1],[2]
Derivative Asset, Noncurrent	3,926,000	[1],[2]		970,000	[1],[2]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent	(246,000)	[3]		0	[3]
Derivative Asset, Noncurrent	0			125,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Derivative Swaps [Member]
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	4,884,000			1,590,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent	(289,000)	[1]		0	[1]
Bank of Nova Scotia [Member] | Forward Foreign Exchange Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	33,000,000
Citibank [Member] | Forward Foreign Exchange Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 5,000,000

[1] (2) The effective portion of the interest rate swaps was recorded to Accumulated other comprehensive loss / (income) for $185,000 and $(94,000) net of tax as of November 30, 2014 and August 31, 2014, respectively. The Company has recorded a deferred tax asset / (liability) amount with an offset to other comprehensive income - tax of $61,000 and $(31,000) as of November 30, 2014 and August 31, 2014, respectively.

[2] The Company has recorded a deferred tax liability amount with an offset to other comprehensive income - tax of $(1.8) million and $(548,000) as of November 30, 2014 and August 31, 2014, respectively, related to asset positions of cross-currency interest rate swaps.

[3] (3) The effective portion of the cross-currency interest rate swaps for this subsidiary was recorded to Accumulated other comprehensive (income)/loss for $194,000 and $0 net of tax as of November 30, 2014 and August 31, 2014, respectively. The Company has recorded a deferred tax asset amount with an offset to other comprehensive income - tax of $95,000 and $0 as of November 30, 2014 and August 31, 2014, respectively.