Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Pre-funded Warrants for Common Stock Issued and Outstanding

As of December 31, 2020, the following pre-funded warrants to purchase common stock were issued and outstanding:

Issue Date	Expiration Date	Exercise Price		Number of Warrants Outstanding
February 8, 2019	None	$	0.0001		4,000,000
April 30, 2020	None	$	0.0001		13,610,328
Total pre-funded warrants					17,610,328