v3.26.1
Stockholder's Equity and Share-Based Compensation - Equity Incentive Plan & ESPP (Q1) (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2020
USD ($)
shares
May 31, 2026
USD ($)
shares
Jan. 31, 2026
shares
Jan. 31, 2025
shares
Mar. 31, 2026
USD ($)
plan
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
plan
shares
Dec. 31, 2024
USD ($)
Share-Based Compensation                
Number of equity incentive plans | plan         3   3  
Share-based compensation expense | $         $ 556,000 $ 858,000 $ 3,001,000 $ 5,820,000
Equity Incentive Plan                
Share-Based Compensation                
Shares authorized         1,106,739      
Shares available for future issuance         204,732      
Shares available for future grant         405,163      
Period till which there is automatic increase in rights granted under the Plan         10 years      
Percent of the total number of shares of the Company's common stock outstanding         5.00%      
Additional number of common shares reserved for future issuance     159,141 155,155        
Vesting period         4 years      
Term of award         10 years      
Equity inducement plan 2021                
Share-Based Compensation                
Shares authorized         125,000   125,000  
Shares available for future issuance         87,634      
Shares available for future grant             87,166  
Term of award         10 years   10 years  
Employee stock purchase plan                
Share-Based Compensation                
Shares authorized 99,088              
Shares available for future grant         59,103   59,103  
Period till which there is automatic increase in rights granted under ESPP 10 years              
Percentage of common stock outstanding 1.00%              
Percentage of stock purchase price 85.00%              
Percentage of maximum employee contribution 15.00%              
Maximum amount of common stock that can be purchased | $ $ 25,000              
Share-based compensation expense | $         $ 0 $ 0 $ 0 $ 0
Number of shares that can be purchased 200              
Employee stock purchase plan | Subsequent event                
Share-Based Compensation                
Maximum amount of common stock that can be purchased | $   $ 25,000            
Number of shares that can be purchased   2,000