Stock-Based Compensation Plan - Summary of Stock Options Vested and Expected to Vest (Details) - $ / shares	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
2011 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options outstanding, number of stock options (in shares)	822,972	1,260,328	1,515,146	1,571,205
Options exercisable, number of stock options (in shares)	822,972
Options outstanding, weighted average remaining contractual life (in years)	2 months 1 day
Options exercisable, weighted average remaining contractual life (in years)	2 months 1 day
Options outstanding exercise price (in usd per share)	$ 0.54	$ 0.56	$ 0.58	$ 0.59
Options exercisable, weighted average exercise price (in usd per share)	$ 0.54
Vested (in shares)	822,972		1,515,146
2017 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options outstanding, number of stock options (in shares)	3,619,914	3,936,176	3,961,658	3,961,658
Options exercisable, number of stock options (in shares)	3,340,901
Options outstanding, weighted average remaining contractual life (in years)	7 years 10 days
Options exercisable, weighted average remaining contractual life (in years)	6 years 11 months 8 days
Options outstanding exercise price (in usd per share)	$ 0.92	$ 0.92	$ 0.92	$ 0.92
Options exercisable, weighted average exercise price (in usd per share)	$ 0.92
2020 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options outstanding, number of stock options (in shares)	1,616,309	1,469,297	1,426,514	0
Options exercisable, number of stock options (in shares)	321,284
Options outstanding, weighted average remaining contractual life (in years)	9 years 2 months 15 days
Options exercisable, weighted average remaining contractual life (in years)	8 years 6 months 21 days
Options outstanding exercise price (in usd per share)	$ 6.46	$ 11.12	$ 11.34	$ 0
Options exercisable, weighted average exercise price (in usd per share)	$ 11.34
Vested (in shares)	321,284
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options outstanding, number of stock options (in shares)	569,677	0
Options exercisable, number of stock options (in shares)	0
Options outstanding, weighted average remaining contractual life (in years)	9 years 10 months 17 days
Options outstanding exercise price (in usd per share)	$ 0.61	$ 0
Options exercisable, weighted average exercise price (in usd per share)	$ 0
Vested (in shares)	0