XML 50 R40.htm IDEA: XBRL DOCUMENT v3.22.2.2
Schedule of Fair Value of Option Grant of Weighted-average Assumptions (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Share-Based Payment Arrangement [Abstract]      
Risk-free interest rate 0.21% 0.21% 0.51%
Expected life of the options 3 years 6 months 3 years 6 months 3 years 6 months
Expected volatility of the underlying stock 76.30% 76.30% 70.70%
Expected dividend rate 0.00% 0.00% 0.00%