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LEASES - Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 29, 2020
Feb. 29, 2020
Leases [Abstract]    
Operating lease expense $ 8,815 $ 17,605
Finance lease expense:    
Amortization of assets 2,720 4,885
Interest on lease liabilities 465 866
Total finance lease expense 3,185 5,751
Variable and short term-lease expense 4,381 8,314
Total lease expense $ 16,381 $ 31,670