Stockholders' Equity (Deficit) - Summary of the Authorized, Issued and Outstanding Shares of Convertible Preferred Stock (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Temporary Equity [Line Items]
Shares Authorized	0	254,983,985
Shares Issued and Outstanding		160,864,434
Per Share Original Issue Price	$ 0.0001	$ 0.0001
Liquidation Value	$ 0	$ 130,487,000
Carrying Value		$ 126,023,000	$ 43,740,000
Series A
Temporary Equity [Line Items]
Shares Authorized		14,979,200
Shares Issued and Outstanding		14,979,200
Per Share Original Issue Price		$ 0.50
Liquidation Value		$ 7,490,000
Carrying Value		$ 7,391,000
Series B
Temporary Equity [Line Items]
Shares Authorized		26,666,667
Shares Issued and Outstanding		26,666,667
Per Share Original Issue Price		$ 0.75
Liquidation Value		$ 20,000,000
Carrying Value		$ 19,901,000
Series C Convertible Preferred Stock Warrant Liability
Temporary Equity [Line Items]
Shares Authorized		53,176,000
Shares Issued and Outstanding		53,063,500
Per Share Original Issue Price		$ 1.00
Liquidation Value		$ 53,064,000
Carrying Value		$ 52,937,000
Series D-1
Temporary Equity [Line Items]
Shares Authorized		66,155,067
Shares Issued and Outstanding		66,155,067
Per Share Original Issue Price		$ 0.76
Liquidation Value		$ 49,933,000
Carrying Value		$ 45,794,000
Series D-2
Temporary Equity [Line Items]
Shares Authorized		94,007,051