Net Loss per Share - Additional Information (Details) - $ / shares		1 Months Ended	12 Months Ended
	Apr. 16, 2019	Nov. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 29, 2019	Nov. 26, 2019	Apr. 12, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average shares of common stock outstanding - basic and diluted (in shares)			11,530,000	459,000	458,000
Pre Funded Warrant
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average shares of common stock outstanding - basic and diluted (in shares)	2,130,000	1,750,000
Convertible preferred stock exercise price (in dollars per share)	$ 10.999					$ 11.999	$ 11.999	$ 10.999
Minimum | Pre Funded Warrant
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Convertible preferred stock exercise price (in dollars per share)			$ 0.001
Redeemable Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average shares of common stock outstanding - basic and diluted (in shares)			107,371	107,371	107,371