SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Restricted Cash) (Details) - USD ($) $ in Thousands		May 31, 2019	Aug. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Restricted cash for land purchase option agreements		$ 4,136	$ 400
Other short-term restricted cash			5
Total short-term restricted cash		4,136	405
Other long-term restricted cash	[1]	3,402	3,049
Total long-term restricted cash		3,402	3,049
Total restricted cash		$ 7,538	$ 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.