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FAIR VALUE MEASUREMENTS - Changes in Level 3 Financial Instruments Measured on Recurring Basis (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Sep. 30, 2024
Healthcare RCM Business |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Accrued contingent consideration, long-term assets held for sale |  |  | $ 198
Accrued contingent consideration |  | $ 1,490 |
Accrued Contingent Consideration |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Contingent consideration accrued at time of business combination | $ 7,600 | 0 |
Change in fair value of contingent consideration included in operating expenses | $ (498) | $ 466 |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Costs and Expenses | Costs and Expenses |
Contingent consideration paid | $ 0 | $ (60) |
Accrued Contingent Consideration |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Balance, beginning | 3,571 | 2,154 |
Balance, ending | $ 10,673 | $ 2,560 |

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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