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FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Assets:    
Money market funds $ 14,979 $ 14,687
Assets held for sale 140 169
Assets 15,863 18,475
Liabilities:    
Final payment fee 200 194
Warrant Liability 2,847 2,796
Liabilities 3,047 2,990
Investment in iECURE    
Assets:    
Investments and marketable securities 744 3,206
Imugene Marketable Securities    
Assets:    
Investments and marketable securities   413
Level 1    
Assets:    
Money market funds 14,979 14,687
Assets held for sale 0 0
Assets 14,979 15,100
Liabilities:    
Final payment fee 0 0
Warrant Liability 0 0
Liabilities 0 0
Level 1 | Investment in iECURE    
Assets:    
Investments and marketable securities 0 0
Level 1 | Imugene Marketable Securities    
Assets:    
Investments and marketable securities   413
Level 2    
Assets:    
Money market funds 0 0
Assets held for sale 0 0
Assets 0 0
Liabilities:    
Final payment fee 200 194
Warrant Liability 0 0
Liabilities 200 194
Level 2 | Investment in iECURE    
Assets:    
Investments and marketable securities 0 0
Level 2 | Imugene Marketable Securities    
Assets:    
Investments and marketable securities   0
Level 3    
Assets:    
Money market funds 0 0
Assets held for sale 140 169
Assets 884 3,375
Liabilities:    
Final payment fee 0 0
Warrant Liability 2,847 2,796
Liabilities 2,847 2,796
Level 3 | Investment in iECURE    
Assets:    
Investments and marketable securities $ 744 3,206
Level 3 | Imugene Marketable Securities    
Assets:    
Investments and marketable securities   $ 0