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NON-CONTROLLING INTEREST - Ownership Interest (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Noncontrolling Interest [Abstract] |  |  |  |
Net income attributable to non-controlling interest | $ 923 | $ 1,470 | $ 1,975 | $ 1,908
Distributions to non-controlling interest holders | $ 283 |  | 283 | 0
Redemption of common units in i3 Verticals, LLC |  |  | (11,730) | (384)
Recapitalization from contribution to i3 Verticals, LLC |  |  | 5,689 | 0
Allocation of equity (from) to non-controlling interests |  |  | (3,356) | 3,750
Net transfers (from) to non-controlling interests |  |  | (9,114) | 3,366
Change from net income attributable to non-controlling interests and net transfers to non-controlling interests |  |  | $ (7,139) | $ 5,274

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