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DEBT - Narrative (Details) - USD ($) $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 05, 2024 | Jul. 19, 2024 | Dec. 04, 2020 | Jul. 30, 2019 | Mar. 31, 2024 | Apr. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | May 23, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  | $ 400 | $ 300 | $ 2,100 | $ 600 |  |
Repayment of borrowings |  |  |  |  |  |  |  |  | 42,968 | $ 1,973 |  |
Additions |  |  |  |  |  |  |  |  | $ 47,359 |  | $ 21,807 |
Ralph E. Wade Insurance Agency Inc. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash paid |  |  |  |  |  | $ 3,000 |  |  |  |  |  |
March 2024 Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Asset acquisition, debt issuance |  |  |  |  | $ 400 |  |  |  |  |  |  |
Notes Payable, Other Payables | Acquisition Related Notes | Ralph E. Wade Insurance Agency Inc. |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  |  |  |  | 3 years |  |  |  |  |  |
Debt instrument interest rate percentage |  |  |  |  |  | 3.75% |  |  |  |  |  |
Notes Payable, Other Payables | Acquisition Related Notes | March 2024 Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  |  |  | 70 months |  |  |  |  |  |  |
Imputed interest rate |  |  |  |  | 5.00% |  |  |  |  |  |  |
Term Loan | Line of Credit | 5-Year Term Loan |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  |  | 5 years |  |  |  |  | 5 years |  |  |
Debt instrument, face amount |  |  |  | $ 4,000 |  |  |  |  |  |  |  |
Term Loan | Line of Credit | 7-Year Term Loan |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  | 7 years |  |  |  |  |  | 7 years |  |  |
Debt instrument, face amount |  |  | $ 13,000 |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayment of borrowings |  | $ 41,000 |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Term loan (in years) |  |  |  |  |  |  |  |  | 5 years |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 50,000
Revolving Credit Facility | Line of Credit | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percent |  |  |  |  |  |  |  |  | 0.20% |  |  |
Revolving Credit Facility | Line of Credit | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percent |  |  |  |  |  |  |  |  | 0.35% |  |  |
Revolving Credit Facility | Line of Credit | Revolving Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayment of borrowings | $ 41,000 |  |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  |  |  | $ 50,000 |  | $ 50,000 |  | $ 9,000 |
Revolving Credit Facility | Line of Credit | Revolving Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percent |  |  |  |  |  |  |  |  | 0.20% |  |  |
Revolving Credit Facility | Line of Credit | Revolving Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percent |  |  |  |  |  |  |  |  | 0.35% |  |  |

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