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DESCRIPTION OF BUSINESS - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 USD ($) patent | Sep. 30, 2022 USD ($)
Business Acquisition [Line Items] |  |
Number of new patent portfolios acquired | patent | 0 |
Printronix |  |
Business Acquisition [Line Items] |  |
Purchase price |  | $ 37.0
Business combination, initial cash payment |  | 33.0
Working capital adjustment |  | $ 4.0
Maximum |  |
Business Acquisition [Line Items] |  |
Ideal market value for future acquisitions | $ 2,000.0 |
Minimum |  |
Business Acquisition [Line Items] |  |
Ideal market value for future acquisitions | $ 1,000.0 |

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