v3.26.1
FAIR VALUE MEASURES - Roll forward of Financial Liabilities (Details) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning Balance $ 22,267 $ 1,148 $ 1,148 $ 1,148 $ 1,636
Issuance of convertible promissory notes 4,300   10,000 10,000  
Loss on issuance   0 4,500    
Change in fair value 1,813   6,619 6,619 (488)
Ending balance 28,380 1,148 22,267 22,267 1,148
Warrant liability Series B-1          
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning Balance 608 114 114 114 165
Loss on issuance   0      
Change in fair value 73   494 494 (51)
Ending balance 681 114 608 608 114
Warrant liability Series D          
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning Balance 2,770 1,034 1,034 1,034 1,471
Loss on issuance   0      
Change in fair value 33   1,736 1,736 (437)
Ending balance 2,803 1,034 2,770 2,770 $ 1,034
Convertible Promissory Notes          
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning Balance 18,889        
Issuance of convertible promissory notes 4,300     10,000  
Loss on issuance   0      
Change in fair value 300     4,389  
Ending balance 4,600   18,889 18,889  
Convertible Promissory Notes Related Parties          
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning Balance 18,889        
Issuance of convertible promissory notes     10,000    
Loss on issuance   $ 0 4,500    
Change in fair value 1,407   4,389    
Ending balance $ 20,296   $ 18,889 $ 18,889