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DEFERRED ROYALTY OBLIGATION RELATED TO THE SALE OF FUTURE ROYALTIES - Schedule (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Non-cash interest expense related to the sale of future royalties | $ (2,188) | $ (1,924) | $ (6,478) | $ (5,202)
Deferred Royalty Obligation [Roll Forward] |  |  |  |
Deferred royalty obligation balance as of January 1, |  |  | 25,527 |
Deferred royalty obligation balance as of September 30, | 28,626 |  | 28,626 |
Healthcare royalty partners IV, L.P |  |  |  |
Deferred Royalty Obligation [Roll Forward] |  |  |  |
Deferred royalty obligation balance as of January 1, |  |  | 25,527 | 20,179
Non-cash interest expense related to sale of future royalties |  |  | 6,478 | 5,202
Royalty distributed to HCR |  |  | (3,379) | (1,009)
Deferred royalty obligation balance as of September 30, | $ 28,626 | $ 24,372 | $ 28,626 | $ 24,372
Healthcare royalty partners IV, L.P | Licensing revenue |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Effective interest rate |  |  | 31.50% | 33.30%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 + Details
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