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v3.23.3

Organization and Operations (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 20, 2021 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Payments of equity issuance costs |  |  |  | $ 0 | $ 0 | $ 253,000
i3Verticals, LLC |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Non-controlling interest, ownership interest |  | 69.70% | 69.40% | 69.70% | 69.40% |
Continuing Equity Owner |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Shareholders ownership interest |  | 31.00% |  | 31.00% |  |
Class B Common Stock | Continuing Equity Owner |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Shareholders ownership interest |  | 30.30% |  | 30.30% |  |
Class A Common Stock | Continuing Equity Owner |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Shareholders ownership interest |  | 0.70% |  | 0.70% |  |
At-the-Market Program |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Payments of equity issuance costs |  |  | $ 440,000 |  | $ 440,000 |
At-the-Market Program | Class A Common Stock |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Sale of stock number of value issued in transaction | $ 125,000,000 |  |  |  |  |
Shares issued (in shares) |  | 0 | 722,000 | 0 | 722,000 |
Net proceeds from IPO |  |  | $ 17,869,000 |  | $ 17,869,000 |
Sale of stock, remaining capacity |  | $ 107,131,000 |  | $ 107,131,000 |  |

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