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STOCK AWARD PLAN AND STOCK-BASED COMPENSATION - Stock Option Activity for Employees and Non-Employees (Details) - Employees and Non-Employees Stock Option - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Shares Issuable Pursuant to Stock Options    
Outstanding at the beginning of period (in shares) 8,173,509  
Granted (in shares) 812,169  
Outstanding at the end of the period (in shares) 8,985,678 8,173,509
Exercisable at the end of the period (in shares) 2,601,033  
Available for future grant (in shares) 5,044,631  
Weighted-Average Exercise Price    
Outstanding at the beginning of period (in dollars per share) $ 4.73  
Granted (in dollars per share) 6.37  
Outstanding at the end of the period (in dollars per share) 4.87 $ 4.73
Exercisable at the end of the period (in dollars per share) $ 6.35  
Weighted-Average Remaining Contractual Term Outstanding (Years) 8 years 2 months 12 days 9 years 6 months
Weighted-Average Remaining Contractual Term Exercisable (Years) 4 years 8 months 12 days  
Total Intrinsic Value Outstanding at the end of period $ 16,270 $ 1,270
Total Intrinsic Value Exercisable $ 4,593