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Redeemable Convertible Preferred Stock (Details) - $ / shares		1 Months Ended	3 Months Ended
	Sep. 23, 2019	Jan. 31, 2019	Mar. 31, 2019
Common Stock | IPO
Temporary Equity [Line Items]
Stock issued upon conversion of redeemable convertible preferred shares (in shares)	7,816,643
Series G redeemable convertible preferred stock
Temporary Equity [Line Items]
Sale of temporary equity, price per share (in dollars per share)		$ 0.078	$ 0.078

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