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LEASES - Components of lease costs (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Leases    
Option to extend true  
Finance lease cost    
Amortization of right-of-use assets $ 622 $ 1,245
Interest on lease liabilities 323 651
Operating lease cost 1,402 2,750
Total lease costs $ 2,347 $ 4,646
Maximum    
Leases    
Lease term 20 years 20 years