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ACQUISITIONS - Preliminary Purchase Consideration of the Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Sep. 30, 2024 | Aug. 01, 2024 | Mar. 31, 2024
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 280,678 | $ 280,678 |  | $ 269,192
Eduloka, Ltd. ("inLumon") |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Accounts receivable |  |  | $ 3,060 |
Property and equipment |  |  | 20 |
Goodwill |  |  | 11,486 |
Total assets acquired |  |  | 29,466 |
Accrued expenses and other current liabilities |  |  | 1,692 |
Deferred revenue, current |  |  | 297 |
Net assets acquired |  |  | 27,477 |
Eduloka, Ltd. ("inLumon") | Capitalized software |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  |  | 3,000 |
Eduloka, Ltd. ("inLumon") | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  |  | 11,800 |
Eduloka, Ltd. ("inLumon") | Trade name |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  |  | $ 100 |

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