Common Stock (Tables)

12 Months Ended

Dec. 31, 2020

Preferred Stock Common Stock And Warrants [Abstract]

Summary of Common Stock Warrants Outstanding

As of December 31, 2020, the following common stock warrants were outstanding:

Warrants Issuance Date	Shares Issuable (in thousands)		Expiration Date	Exercise Price per Share		Outstanding as of December 31, 2020 (in thousands)
August 12, 2019		5,841	February 12, 2022	$	4.50		5,841