LEASES - Lease Liabilities (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Leases [Abstract]
Current portion of lease liabilities	$ 1,583	$ 0
Long term lease liabilities, net of current portion	4,157
Total lease liabilities	$ 5,740
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent