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LEASES - Additional information related to leases (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities |  |  |  |
Operating cash flows from operating leases | $ 1,320 | $ 1,452 | $ 4,102 | $ 4,334
Operating cash flows from finance leases | 306 | 319 | 915 | 655
Financing cash flows from finance leases | 428 | 418 | 1,261 | 1,145
Right-of-use assets obtained in exchange for operating lease liabilities | $ 12,780 | $ 53 | $ 12,780 | $ 22,072
Weighted-average remaining lease term |  |  |  |
Operating leases | 10 years 3 months 21 days | 6 years 7 months 20 days | 10 years 3 months 21 days | 6 years 7 months 20 days
Finance leases | 11 years 10 months 9 days | 12 years 9 months 3 days | 11 years 10 months 9 days | 12 years 9 months 3 days
Weighted-average discount rate |  |  |  |
Operating leases | 3.12% | 3.14% | 3.12% | 3.14%
Finance leases | 4.31% | 4.29% | 4.31% | 4.29%

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- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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