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Net Loss per Share (Tables)
 3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Schedule of Antidilutive Shares Excluded From Calculation of Diluted Net Loss Per Share
The following table presents the number of anti-dilutive shares excluded from the calculation of diluted net loss per share as of the following dates:
March 31, 2022March 31, 2021
Stock-based compensation awards – SI Plan4,347,492 — 
Stock-based compensation awards – EI Plan30,644,384 31,762,113 
Stock-based compensation awards – STI Plan8,789,939 6,854,436 
Public Warrants22,977,568 — 
Private Warrants674,551 — 
Other warrants4,544,258 1,857,175 
Convertible notes payable9,009,210 4,409,167 
Total80,987,402 44,882,891