Stockholders' Equity - Additional Information (Detail) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Apr. 30, 2021	Jul. 31, 2020
Class of Stock [Line Items]
Unvested restricted stock	31,973,061	31,973,061		28,883,700
Difference in offering price of warrants to offering price of common stock					$ 0.001
Prefunded warrants exercised	0
Unvested Restricted Stock Unit [Member]
Class of Stock [Line Items]
Unvested restricted stock	1,786,869	1,786,869	809,750	1,650,250
Pre-funded Warrants [Member]
Class of Stock [Line Items]
Unvested restricted stock	11,111,110	11,111,110		11,111,110
Warrants to purchase common stock					7,111,110	4,000,000
Difference in offering price of warrants to offering price of common stock						$ 0.001
Options to Purchase Common Stock [Member]
Class of Stock [Line Items]
Potentially dilutive securities excluded from the calculation of diluted net loss per share		12,541,406	11,860,751