SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Restricted Cash) (Details) - USD ($) $ in Thousands		Feb. 28, 2019	Aug. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Restricted cash for land purchase option agreements		$ 4,460	$ 400
Other short-term restricted cash		4	5
Total short-term restricted cash		4,464	405
Other long-term restricted cash	[1]	3,352	3,049
Total long-term restricted cash		3,352	3,049
Total restricted cash		$ 7,816	$ 3,454

[1] Other long-term restricted cash consists mainly of cash deposits held within banking institutions in compliance with federal regulatory requirements in Costa Rica and Panama.