XML 88 R70.htm IDEA: XBRL DOCUMENT v3.22.4
Schedule of Fair Values of Stock Options Granted Using Black-scholes Valuation Model Assumptions (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
2014 Equity Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term of stock options (in years) 5 years 9 months 18 days 5 years 7 months 6 days
Expected stock price volatility 88.00% 76.00%
Risk free interest rate 2.20% 1.00%
Expected dividend yield
2018 Equity Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Expected term of stock options (in years) 5 years 7 months 6 days 5 years 8 months 12 days
Expected stock price volatility 71.00% 70.00%
Risk free interest rate 2.10% 1.30%
Expected dividend yield