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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of Warrant Activity A summary of our outstanding warrants is set forth below:
December 31, 2021
December 31, 2020
Warrant TypeCash Exercise
Price per
share
Number of warrantsCash Exercise
Price per
share
Number of warrants
2020 Convertible Notes warrant$2.25 1,780,000 $4.00 2,160,000 
Common stock warrant (Series D-1)$2.25 35,555 $5.54 14,866 
Common stock warrants (Series F)$9.22 377,402 $9.22 377,402 
Public Warrants (PHUNW)$11.50 1,761,291 $11.50 1,761,291 
Private Placement Warrants$11.50 1,658,381 $11.50 1,658,381 
Unit Purchase Option Warrants$11.50 24,172 $11.50 24,172 
Total5,636,801 5,996,112