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REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands | 9 Months Ended |
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Jun. 30, 2026 | Sep. 30, 2025
Revenue from Contract with Customer [Abstract] |  |
Contract assets, net | $ 10,102 | $ 10,971
Change in Contract with Customer, Liability [Roll Forward] |  |
Contract liabilities balance at September 30, 2025 | 81,213 |
Payment received/accrued and deferred | 73,851 |
Revenue recognized during the period | (67,494) |
Contract liabilities balance at June 30, 2026 | $ 87,570 |

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