2020 PLAN & RESTRUCTURING CHARGES (Details) $ in Thousands	6 Months Ended	12 Months Ended
	May 31, 2020 USD ($)	Aug. 31, 2020 USD ($) employee	Aug. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of employees terminated | employee		98
Severance costs		$ 1,247
Restructuring charges	$ 8,358	8,358	$ 0
Impairment of fixed assets		3,900
Impairment charges to its right-of-use		3,000
Restructuring costs		9,600
Restructuring reserve
Restructuring reserve, beginning balance	0
Restructuring charges	8,358	8,358	$ 0
Utilized/Paid	(8,358)
Restructuring reserve, ending balance	0
Severance related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,247
Restructuring reserve
Restructuring reserve, beginning balance	0
Restructuring charges	1,247
Utilized/Paid	(1,247)
Restructuring reserve, ending balance	0
Facility, ROU and asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,895
Restructuring reserve
Restructuring reserve, beginning balance	0
Restructuring charges	6,895
Utilized/Paid	(6,895)
Restructuring reserve, ending balance	0
Facility exit cost
Restructuring Cost and Reserve [Line Items]
Restructuring charges	216	200
Restructuring reserve
Restructuring reserve, beginning balance	0
Restructuring charges	216	$ 200
Utilized/Paid	(216)
Restructuring reserve, ending balance	$ 0