Capitalization - Convertible Preferred Stock (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Oct. 31, 2020	May 31, 2020
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)	$ 6.11
Temporary equity, shares authorized (in shares)	0	86,815,192
Temporary equity, shares outstanding (in shares)	0	73,914,149	49,112,131	49,084,184
Carrying Value Net of Issuance Costs	$ 0	$ 246,056,000	$ 156,959,000	$ 156,848,000
Temporary equity, liquidation preference	$ 0	$ 271,845,000
Series AA
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)		$ 0.9867
Temporary equity, shares authorized (in shares)		3,482,030
Temporary equity, shares outstanding (in shares)		3,482,030
Carrying Value Net of Issuance Costs		$ 3,435,000
Temporary equity, liquidation preference		$ 3,435,000
Series B
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)		$ 3.4132
Temporary equity, shares authorized (in shares)		20,660,715
Temporary equity, shares outstanding (in shares)		20,660,715
Carrying Value Net of Issuance Costs		$ 70,045,000
Temporary equity, liquidation preference		$ 70,519,000
Series B-1
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)		$ 3.9760			$ 3.9760	$ 3.9760
Temporary equity, shares authorized (in shares)		49,809,148
Temporary equity, shares outstanding (in shares)		42,133,496
Carrying Value Net of Issuance Costs		$ 150,553,000
Temporary equity, liquidation preference		$ 167,523,000
Series B-2
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)		$ 3.9760
Temporary equity, shares authorized (in shares)		2,515,083
Temporary equity, shares outstanding (in shares)		412,623
Carrying Value Net of Issuance Costs		$ 1,640,000
Temporary equity, liquidation preference		$ 1,640,000
Junior
Temporary Equity [Line Items]
Original Issuance Price (in dollars per share)		$ 3.9760
Temporary equity, shares authorized (in shares)		10,348,216
Temporary equity, shares outstanding (in shares)		7,225,285
Carrying Value Net of Issuance Costs		$ 20,383,000
Temporary equity, liquidation preference		$ 28,728,000