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Stock-Based Compensation - Fair Value of Stock Options Assumptions Using Black-Scholes Option Valuation Model (Details)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Risk-free interest rate, Minimum 3.58% 1.63%
Risk-free interest rate, Maximum 3.87% 2.43%
Expected volatility, Minimum 89.69% 74.49%
Expected volatility, Maximum 95.63% 76.27%
Expected dividend yield 0.00% 0.00%
Maximum [Member]    
Expected life in years 6 years 3 months  
Minimum [Member]    
Expected life in years 5 years 21 days 6 years 3 months