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LEASES - Reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
Operating leases |  |
2024 (excluding the six months ended March 31, 2024) | $ 3,389 |
2025 | 6,014 |
2026 | 4,729 |
2027 | 4,479 |
2028 and thereafter | 33,206 |
Total minimum lease payments | 51,817 |
Less: amounts representing interest | 11,540 |
Present value of net minimum lease payments | 40,277 |
Less: current portion of lease obligations | 4,833 |
Non-current portion of lease obligations | 35,444 | $ 36,554
ROU assets | $ 38,322 | $ 39,839
Location of operating lease liabilities included on Consolidated Balance Sheets | Accrued other expenses, Other liabilities |
Location of operating lease ROU assets included on Consolidated Balance Sheets | ROU assets |
Finance leases |  |
2024 (excluding the six months ended March 31, 2024) | $ 1,090 |
2025 | 2,233 |
2026 | 2,297 |
2027 | 2,357 |
2028 and thereafter | 16,470 |
Total minimum lease payments | 24,447 |
Less: amounts representing interest | 5,795 |
Present value of net minimum lease payments | 18,652 |
Less: current portion of lease obligations | 1,375 |
Non-current portion of lease obligations | 17,277 |
ROU assets | $ 14,427 |
Location of finance lease liabilities included on Consolidated Balance Sheets | Accrued other expenses, Other liabilities |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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