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Net Loss Per Share (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Earnings Per Share [Abstract]    
Schedule of antidilutive shares excluded from calculation of diluted net loss per share
   March 31,
2022		   March 31,
2021		 
Stock-based compensation awards – SI Plan   4,347,492    
—
 
Stock-based compensation awards – EI Plan   30,644,384    31,762,113 
Stock-based compensation awards – STI Plan   8,789,939    6,854,436 
Public Warrants   22,977,568    
—
 
Private Warrants   674,551    
—
 
Other warrants   4,544,258    1,857,175 
Convertible notes payable   9,009,210    4,409,167 
Total   80,987,402    44,882,891 
   2021   2020 
Stock-based compensation awards – EI Plan   31,962,921    30,402,801 
Stock-based compensation awards – STI Plan   9,526,727    6,490,208 
Public Warrants   22,977,568    
—
 
Private Warrants   674,551    
—
 
Other warrants   4,544,258    272,730 
Convertible notes payable   9,009,210    
—
 
Total   78,695,235    37,165,739