Common Stock Warrants - Schedule of Outstanding Warrants (Detail) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Warrants [Roll Forward]
Outstanding and exercisable warrants to purchase common shares as of December 31, 2021	13,257,160
Issued	766,666
Exercised	(100)
Number of warrants, Outstanding and exercisable warrants, Ending Balance (in shares)	14,023,726	13,257,160
Class Of Warrant Or Right Issued, Weighted Average Exercise Price	$ 1.80
Warrants, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Outstanding and exercisable warrants, Beginning Balance (in usd per share)	7.96
Weighted Average Exercise Price, Outstanding and exercisable warrants, Ending Balance (in usd per share)	$ 6.91	$ 7.96
Weighted Average Contractual Term (Years)	2 years 5 months 19 days	2 years 8 months 19 days