DEBT (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Aug. 31, 2018		Aug. 31, 2017		Aug. 31, 2016
Debt Instrument [Line Items]
Total	$ 102,575	[1]	$ 106,297	[2]	$ 88,107	[3]
Less: current portion	14,855		18,358		14,565
Long-term debt, net of current portion	87,720		87,939		$ 73,542
Long term debt with balloon payment [Member]
Debt Instrument [Line Items]
Total	9,509		18,200
Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]
Debt Instrument [Line Items]
Total	60,849		49,424
Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]
Debt Instrument [Line Items]
Total	4,392		17,585
Cross Currency Interest Rate Swap With Non-Cash Assets And/Or Cash Or Cash Equivalents [Member]
Debt Instrument [Line Items]
Total	$ 27,825		$ 21,088

[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.