SUBSEQUENT EVENTS	6 Months Ended
SUBSEQUENT EVENTS	Mar. 31, 2025
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Recent Acquisitions On April 1, 2025, the Company completed the acquisition of a business to expand the Company’s Public Sector utility billing software offerings within the Public Sector segment. Purchase consideration for the business included $9,000 in cash funded by proceeds from the Company's revolving credit facility and cash on hand as well as an amount of contingent consideration which is still being valued. Certain provisions in the purchase agreement provide for additional consideration of up to $5,000, in the aggregate, to be paid based upon the achievement of specified financial performance targets, as defined in the purchase agreement, through no later than September 2027. The Company is in process of determining the acquisition date fair values of the liabilities for the contingent consideration based on discounted cash flow analyses. In each subsequent reporting period, the Company will reassess its current estimates of performance relative to the targets and adjust the contingent liabilities to their fair values through earnings. The effect of the acquisition will be included in the consolidated statements of operations beginning April 1, 2025. The Company is still evaluating the allocations of the preliminary purchase consideration and pro forma results of operations. Recent Divestitures On May 5, 2025, i3 Verticals, LLC and i3 Healthcare Solutions, LLC, a wholly-owned subsidiary of i3 Verticals, LLC (“Seller,” and collectively with i3 Verticals, LLC, the “Seller Parties”), completed the sale of the equity interests of certain wholly-owned subsidiaries of the Seller (the “Healthcare RCM Acquired Entities”) which owned and operated the Company's healthcare revenue cycle management business, including its associated proprietary technology (the “Healthcare RCM Business”), to Infinx, Inc. (“Healthcare RCM Buyer”), a Texas corporation, pursuant to the terms of that certain Securities Purchase Agreement dated as of May 5, 2025, by and among Healthcare RCM Buyer and the Seller Parties (the “Healthcare RCM Purchase Agreement;” the transactions contemplated by the Healthcare RCM Purchase Agreement, the “Healthcare RCM Transactions”). In addition, immediately prior to the sale of the equity interests of the Healthcare RCM Acquired Entities pursuant to the Healthcare RCM Purchase Agreement, i3 Verticals, LLC and certain of its subsidiaries contributed and/or assigned certain assets and certain liabilities related to the Healthcare RCM Business to the Healthcare RCM Acquired Entities. The purchase price payable by Healthcare RCM Buyer to Seller for the equity interests of the Healthcare RCM Acquired Entities was $96.0 million, paid in cash at closing, subject to post-closing net working capital and other purchase price adjustments as provided in the Healthcare RCM Purchase Agreement. As of March 31, 2025, the Company's Healthcare RCM Business was not classified as held for sale according to GAAP due to the lack of identification of a final buyer, preliminary stage of buyer's diligence and lack of Board approval for the sale. Accordingly, the current period and historical results of the Healthcare RCM Business are presented within results from continuing operations in this Quarterly Report on Form 10-Q. In connection with the sale of the Healthcare RCM Business, the Company fully accelerated the vesting period for the options and RSUs (to the extent not previously vested) held by employees of the Healthcare RCM Business immediately prior to the closing of the Healthcare RCM Transactions pursuant to the Healthcare RCM Purchase Agreement. Amendment to Credit Agreement On May 5, 2025, i3 LLC entered into that certain Second Amendment to Credit Agreement (the “Amendment”), which amends that certain Credit Agreement dated as of May 8, 2023, as amended (the “Existing Credit Agreement”), with the guarantors and the lenders party thereto and JPMorgan Chase Bank, N.A., as administrative agent. The Amendment provides for certain amendments to the Existing Credit Agreement, including amendments that permitted and accommodated the execution of the Healthcare RCM Purchase Agreement and the consummation of the Healthcare RCM Transactions. The Amendment also permanently reduced the aggregate lender commitments under the Company’s revolving line of credit from $450,000 to $400,000.