DEBT (Narrative) (Details) - USD ($)		Aug. 31, 2018		Feb. 28, 2018	Feb. 26, 2018	Feb. 25, 2018	Aug. 31, 2017		Aug. 31, 2016	[3]
Debt Instrument [Line Items]
Total		$ 102,575,000	[1]				$ 106,297,000	[2]	$ 88,107,000
Debt With Covenants [Member]
Debt Instrument [Line Items]
Line of credit, Current		40,000,000					40,000,000
Group of Subsidiaries [Member] | Debt With Covenants [Member]
Debt Instrument [Line Items]
Total		93,600,000					$ 85,600,000
Cash Flow Hedging [Member] | Honduras $13.5M Cross Currency Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notional amount	[4]	$ 13,500,000
Derivative, variable interest rate		3.00%
Derivative, fixed interest rate	[4]	9.75%
Cash Flow Hedging [Member] | Honduras $13.5M Cross Currency Interest Rate Swap [Member] | Honduras Subsidiary [Member]
Debt Instrument [Line Items]
Notional amount					$ 5,600,000	$ 7,900,000
Derivative, variable interest rate				3.00%

[1] The carrying amount on non-cash assets assigned as collateral for these loans was $125.9 million. No cash assets were assigned as collateral for these loans as of August 31, 2017.

[2] The carrying amount on non-cash assets assigned as collateral for these loans was $128.4 million. No cash assets were assigned as collateral for these loans.

[3] The carrying amount on non-cash assets assigned as collateral for these loans was $102.4 million. No cash assets were assigned as collateral for these loans.

[4] In February 2018, the Company's Honduras subsidiary refinanced its portfolio of loans entered into with Citibank. The original notional amount of this portfolio of loans was $13.5 million, which the Company drew down in fiscal year 2015. There was approximately $7.9 million of remaining principal at the time of refinancing. Under the refinancing agreement, the portfolio of loans was combined into one loan and the notional amount of the loan increased back to the original $13.5 million, with the interest rate set at the 90 day LIBOR rate plus 3.0%. In conjunction with the refinancing of these loans, the Company's Honduras subsidiary drew down the additional $5.6 million notional amount during February 2018. As part of the terms, the existing cash flow hedge related to the original loan, was de-designated and incorporated into a new hedging relationship where the Company's Honduras subsidiary has entered into a cross-currency interest rate swap with Citibank. Under this new hedge agreement, the Company's Honduras subsidiary will pay Honduras Lempiras, at a fixed interest rate of 9.75%.