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DEBT (Narrative) (Details) - USD ($) | Aug. 31, 2018 | Feb. 28, 2018 | Feb. 26, 2018 | Feb. 25, 2018 | Aug. 31, 2017 | Aug. 31, 2016 | [3]
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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%.

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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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