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COLLABORATION AND LICENSING AGREEMENTS - Deferred Revenue (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Current |  |
Beginning balance | $ 10,686 |
Ending balance | 6,280 |
Non-Current |  |
Beginning balance | 7,232 |
Ending balance | 12,295 |
2017 KKC Agreement |  |
Current |  |
Beginning balance | 10,686 | $ 7,182
Prepaid product supply | 227 | 731
Product supply delivered | (4,633) | (1,328)
Reclassify amounts to be recognized in the next twelve months | 0 | 4,244
Ending balance | 6,280 | 10,829
Non-Current |  |
Beginning balance | 7,232 | 8,644
Prepaid product supply | 5,063 | 5,213
Product supply delivered | 0 | 0
Reclassify amounts to be recognized in the next twelve months | 0 | (4,244)
Ending balance | $ 12,295 | $ 9,613

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
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