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Stock-Based Compensation, Equity Compensation Plans (Details) - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2014
Jan. 22, 2024
Jul. 14, 2023
May 17, 2022
Dec. 08, 2020
Jun. 17, 2019
Mar. 31, 2019
Dec. 31, 2018
The Plans [Member]                  
Stock Options [Abstract]                  
Term of plan 10 years                
The Plans [Member] | Incentive Stock Options [Member]                  
Stock Options [Abstract]                  
Vesting period 4 years                
The Plans [Member] | Incentive Stock Options [Member] | Maximum [Member]                  
Stock Options [Abstract]                  
Term of option 10 years                
2014 Equity Incentive Plan [Member]                  
Stock Options [Abstract]                  
Number of shares authorized for issuance (in shares)   91,367   6,565,535   4,165,535   826,292  
Percentage of Common Stock outstanding used to determine annual increase in the plan limit   4.00%              
Shares available for grant (in shares) 2,301,167                
2018 Equity Incentive Plan [Member]                  
Stock Options [Abstract]                  
Number of shares authorized for issuance (in shares)                 558,071
Shares available for grant (in shares) 190,799                
2019 Inducement Plan [Member]                  
Stock Options [Abstract]                  
Number of shares authorized for issuance (in shares)     2,100,000   1,100,000 500,000 200,000    
Shares available for grant (in shares) 962,407