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LEASES (Tables) | 9 Months Ended
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Jun. 30, 2020
LEASES |
Schedule of components of lease costs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | June 30, | ​ | June 30,
(Dollars in thousands) |  | 2020 |  | 2020
Finance lease cost |  | ​ | ​ | ​ | ​ |
Amortization of right-of-use assets | ​ | $ | 540 | ​ | $ | 1,622
Interest on lease liabilities | ​ |  | 319 | ​ |  | 970
Operating lease cost | ​ |  | 1,474 | ​ |  | 4,399
Total lease costs | ​ | $ | 2,333 | ​ | $ | 6,991
Schedule of additional information related to leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ | ​ | June 30, | ​ | June 30, | ​
(Dollars in thousands) |  | 2020 |  | 2020 | ​
Cash paid for amounts included in the measurement of lease liabilities |  | ​ | ​ | ​ | ​ |  | ​
Operating cash flows from operating leases | ​ | $ | 1,452 | ​ | $ | 4,334 | ​
Operating cash flows from finance leases | ​ |  | 319 | ​ |  | 655 | ​
Financing cash flows from finance leases | ​ |  | 418 | ​ |  | 1,145 | ​
Right-of-use assets obtained in exchange for lease liabilities | ​ |  | ​ | ​ |  | ​ | ​
Operating leases | ​ | $ | 53 | ​ | $ | 22,072 | ​
Weighted-average remaining lease term | ​ | ​ | ​ | ​ |  | ​ | ​
Operating leases | ​ | ​ | ​ | ​ |  | 6.64 | years
Finance leases | ​ | ​ | ​ | ​ |  | 12.76 | years
Weighted-average discount rate | ​ | ​ | ​ | ​ |  | ​ | ​
Operating leases | ​ | ​ | ​ | ​ |  | 3.14 | %
Finance leases | ​ | ​ | ​ | ​ |  | 4.29 | %
Schedule of reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ |  | Operating |  | Finance
Years Ending September 30: |  | Leases |  | Leases
2020 (excluding the nine months ended June 30, 2020) | ​ | $ | 1,294 |  | ​ | 718
2021 | ​ |  | 4,664 |  | ​ | 2,930
2022 | ​ |  | 4,005 |  | ​ | 3,011
2023 | ​ |  | 3,057 |  | ​ | 3,094
2024 and thereafter | ​ |  | 7,633 |  | ​ | 31,416
Total minimum lease payments | ​ |  | 20,653 |  | ​ | 41,169
Less: amounts representing interest | ​ |  | 2,021 |  |  | 10,502
Present value of net minimum lease payments | ​ | $ | 18,632 |  | ​ | 30,667
Less: current portion of lease obligations | ​ |  | 4,275 |  | ​ | 1,908
Non-current portion of lease obligations | ​ |  | 14,357 |  | ​ | 28,759
ROU assets | ​ | $ | 18,351 |  | ​ | 27,535
Schedule of future minimum lease payments for operating and capital leases under ASC 840 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | Operating | ​ | Finance | ​
Years Ending September 30: |  | Leases |  | Leases |
2020 | ​ | $ | 5,574 | ​ | ​ | 2,518 | ​
2021 | ​ |  | 4,558 | ​ | ​ | 2,930 | ​
2022 | ​ |  | 3,950 | ​ | ​ | 3,012 | ​
2023 | ​ |  | 3,270 | ​ | ​ | 3,094 | ​
2024 and thereafter | ​ |  | 8,443 | ​ | ​ | 31,499 | ​
Total minimum lease payments | ​ | $ | 25,795 | ​ | ​ | 43,053 | ​
Less: amounts representing interest | ​ |  | * | ​ | ​ | 11,241 | ​
Present value of net minimum lease payments | ​ |  | * | ​ | ​ | 31,812 | ​
Less: Current portion of lease obligations | ​ |  | * | ​ | ​ | 1,832 | ​
Non-current portion of lease obligations | ​ | ​ | * | ​ | ​ | 29,980 | ​
* Not applicable for operating leases

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- Definition The tabular disclosure for future minimum lease payments for operating and capital leases under ASC 840. + References No definition available. + Details
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- Definition The tabular disclosure for reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets. + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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