DEBT (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Feb. 28, 2022		Aug. 31, 2021
Debt Instrument [Line Items]
Total long-term loans	$ 148,818	[1]	$ 129,505	[2]
Annual commitment fee	0.25%
Group of Subsidiaries [Member] | Debt With Covenants [Member]
Debt Instrument [Line Items]
Total long-term loans	$ 120,500		$ 103,400
Trinidad Subsidiary [Member]
Debt Instrument [Line Items]
Increase in long term debt	$ 25,000

[1] The carrying amount of cash and non-cash assets assigned as collateral for these loans was $6.4 million and $166.8 million, respectively.

[2] The carrying amount of cash and non-cash assets assigned as collateral for these loans was $7.0 million and $153.5 million, respectively.