Stock-based Compensation - Summary of Activity for Warrants Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Class Of Warrant Or Right [Line Items]
Number of Warrants, Outstanding	11,087,708	8,856,255
Number of Warrants, Exercisable	11,087,708	8,522,922
Weighted Average Exercise Price, Outstanding	$ 2.37	$ 2.91
Weighted Average Exercise Price, Exercisable	$ 2.37	$ 2.91
Weighted Average Remaining Contractual Term, Outstanding	6 years 10 months 24 days	7 years 4 months 24 days
Stock Based Compensation Warrants [Member]
Class Of Warrant Or Right [Line Items]
Number of Warrants, Outstanding	1,911,099	1,161,099
Number of Warrants, Exercisable	1,911,099
Weighted Average Exercise Price, Outstanding	$ 3.42	$ 4.65
Weighted Average Exercise Price, Exercisable	$ 3.42
Weighted Average Remaining Contractual Term, Outstanding	5 years 10 months 24 days	4 years 10 months 24 days
Weighted Average Remaining Contractual Term, Exercisable	5 years 10 months 24 days