v3.26.1
Equity-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 01, 2026
Jan. 01, 2025
Sep. 30, 2017
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Sep. 22, 2017
Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares available for grant (in shares)       22,394 12,394    
Increase in number of shares available for grant 10,000            
Number of additional shares allowable annually under the plan (in shares)     2,000        
Percentage of outstanding shares allowable as annual increase     0.30%        
Employee Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Maximum ESPP contribution rate as a percentage of compensation     15.00%        
Maximum number of shares per employee in purchase period (in shares)     50        
Maximum contribution amount     $ 25        
ESPP purchase price as a percentage of market price     85.00%        
Offering period duration     6 months        
Issuance of common stock-ESPP (in shares)         0 0  
Exicure, Inc. 2017 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized (in shares)             38,950
Number of shares available for grant (in shares)       154,672     14,466
Number of additional shares authorized, potential maximum additional shares (in shares)       30,667      
Number of additional shares authorized, percentage of common stock outstanding       5.00%      
Exicure, Inc. 2017 Equity Incentive Plan | Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Increase in number of shares available for grant   30,667          
Expiration period       10 years      
Exicure, Inc. 2017 Equity Incentive Plan | Initial Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period       48 months      
Exicure, Inc. 2017 Equity Incentive Plan | Subsequent Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period       48 months      
Exicure OpCo 2015 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares available for grant (in shares)             25,559
Share-based Compensation Award, Tranche One | Exicure, Inc. 2017 Equity Incentive Plan | Initial Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage       25.00%      
Share-based Compensation Award, Tranche Two | Initial Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage       2.08%      
Share-based Compensation Award, Tranche Two | Subsequent Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage       2.08%      
Non-employee Director | Exicure, Inc. 2017 Equity Incentive Plan | Initial Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period       36 months      
Non-employee Director | Exicure, Inc. 2017 Equity Incentive Plan | Subsequent Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period       12 months      
Non-employee Director | Exicure OpCo 2015 Equity Incentive Plan | Initial Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage       2.77%      
Non-employee Director | Exicure OpCo 2015 Equity Incentive Plan | Subsequent Employee Stock Option              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting percentage       8.30%