Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Stockholders' Equity Attributable to Parent [Abstract]

Summary of Warrant Activity by Warrant Type

A summary of our outstanding warrants is set forth below:

	March 31, 2022			December 31, 2021
Warrant Type	Cash Exercise Price per share		Number of warrants	Cash Exercise Price per share		Number of warrants
2020 Convertible Note warrant	$	2.25	1,780,000	$	2.25	1,780,000
Common stock warrant (Series D-1)	$	2.25	35,555	$	2.25	35,555
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
Total			5,636,801			5,636,801