LEASES - Components of lease costs (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019 USD ($)
Leases
Option to extend	true
Finance lease cost
Amortization of right-of-use assets	$ 622
Interest on lease liabilities	328
Operating lease cost	1,419
Total lease costs	$ 2,369
Maximum
Leases
Lease term	20 years