LEASES - Additional information related to leases (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 1,408
Operating cash flows from finance leases	138
Financing cash flows from finance leases	351
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	$ 22,014
Weighted-average remaining lease term
Operating leases	6 years 6 months 3 days
Finance leases	13 years 1 month 28 days
Weighted-average discount rate
Operating leases	3.14%
Finance leases	4.28%