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Share-Based Payment (Details) - Schedule of stock option activity plan - $ / shares | 9 Months Ended | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of stock option activity plan [Abstract] |  |  |  |  |
Number of shares, Outstanding at beginning (in Shares) | 34,737,967 | 7,578,503 | 7,578,503 | 8,810,178 | 9,034,556
Weighted average exercise price, Outstanding at beginning | $ 6.19 | $ 5.5 | $ 5.5 | $ 5.55 | $ 5.57
Weighted average grant date fair value, Outstanding at beginning | $ 2.92 | $ 2.14 | $ 2.14 | $ 2.16 | $ 2.19
Weighted average remaining contractual life, Outstanding at beginning | 9 years | 7 years 1 month 6 days |  |  | 9 years 1 month 6 days
Number of shares, Granted (in Shares) |  | 27,874,727 | 28,350,160 |  | 160,270
Weighted average exercise price, Granted |  | $ 6.27 | $ 6.28 |  | $ 6.28
Weighted average grant date fair value, Granted |  | $ 3.06 | $ 3.09 |  | $ 1.41
Weighted average remaining contractual life, Granted |  |  |  |  |
Number of shares, Forfeited (in Shares) | (1,186,220) | (1,196,158) | (1,190,696) | (1,231,675) | (384,684)
Weighted average exercise price, Forfeited | $ 6.27 | $ 3.89 | $ 3.89 | $ 5.83 | $ 6.28
Weighted average grant date fair value, Forfeited | $ 3.13 | $ 2.04 | $ 2.04 | $ 2.27 | $ 2.42
Weighted average remaining contractual life, Forfeited |  |  |  |  |
Number of shares, Outstanding at ending (in Shares) |  |  | 34,737,967 | 7,578,503 | 8,810,178
Weighted average exercise price, Outstanding at ending |  |  | $ 6.19 | $ 5.5 | $ 5.55
Weighted average grant date fair value, Outstanding at ending |  |  | $ 2.92 | $ 2.14 | $ 2.16
Weighted average remaining contractual life, Outstanding at ending | 8 years 2 months 12 days | 9 years 2 months 12 days | 9 years | 7 years 1 month 6 days | 8 years 1 month 6 days
Number of shares, Expected to vest and exercisable (in Shares) | 33,551,747 | 34,257,072 | 34,737,967 |  |
Weighted average exercise price, Expected to vest and exercisable | $ 6.19 | $ 6.19 | $ 6.19 |  |
Weighted average grant date fair value, Expected to vest and exercisable | $ 4.95 | $ 2.9 | $ 2.92 |  |
Weighted average remaining contractual life, Expected to vest and exercisable | 8 years 2 months 12 days | 9 years 2 months 12 days | 9 years |  |

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