v3.26.1
Stock-Based Compensation - Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
2021 Plan    
Number of Options    
Outstanding, beginning balance (in shares) 8,666,219  
Granted (in shares) 630,560  
Exercised (in shares) 0  
Forfeited and expired (in shares) 488,016  
Outstanding, ending balance (in shares) 8,808,763 8,666,219
Number of Options, Vested and expected to vest (in shares) 8,808,763  
Number of Options, Exercisable (in shares) 3,528,969  
Weighted-Average Exercise Price per Share    
Outstanding, beginning balance (in dollars per share) $ 14.08  
Granted (in dollars per share) 14.08  
Exercised (in dollars per share) 0  
Forfeited and expired (in dollars per share) 14.08  
Outstanding, ending balance (in dollars per share) 14.08 $ 14.08
Weighted-Average Exercise Price per Share, Vested and expected to vest (in dollars per share) 14.08  
Weighted-Average Exercise Price per Share, Exercisable (in dollars per share) $ 14.08  
Additional Disclosures    
Weighted-Average Remaining Contractual Term, Outstanding 5 years 7 months 24 days 7 years 2 months 4 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest 5 years 7 months 24 days  
Weighted-Average Remaining Contractual Term, Exercisable 4 years 6 months 14 days  
Aggregate Intrinsic Value, Outstanding $ 0  
Aggregate Intrinsic Value, Vested and expected to vest 0 $ 98,734
Aggregate Intrinsic Value, Exercisable $ 0  
2025 Plan    
Number of Options    
Outstanding, beginning balance (in shares) 0  
Granted (in shares) 400,960  
Exercised (in shares) 0  
Forfeited and expired (in shares) 49,334  
Outstanding, ending balance (in shares) 351,626 0
Number of Options, Vested and expected to vest (in shares) 351,626  
Number of Options, Exercisable (in shares) 29,474  
Weighted-Average Exercise Price per Share    
Outstanding, beginning balance (in dollars per share) $ 0  
Granted (in dollars per share) 17.00  
Exercised (in dollars per share) 0  
Forfeited and expired (in dollars per share) 17.00  
Outstanding, ending balance (in dollars per share) 17.00 $ 0
Weighted-Average Exercise Price per Share, Vested and expected to vest (in dollars per share) 17.00  
Weighted-Average Exercise Price per Share, Exercisable (in dollars per share) $ 17.00  
Additional Disclosures    
Weighted-Average Remaining Contractual Term, Outstanding 9 years 3 months 25 days  
Weighted-Average Remaining Contractual Term, Vested and expected to vest 9 years 3 months 25 days  
Weighted-Average Remaining Contractual Term, Exercisable 9 years 3 months 25 days  
Aggregate Intrinsic Value, Outstanding $ 0  
Aggregate Intrinsic Value, Vested and expected to vest 0  
Aggregate Intrinsic Value, Exercisable $ 0