Commitment and Contingencies (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended	9 Months Ended
	Jul. 21, 2021 USD ($)	Jan. 31, 2022 USD ($)	Jul. 31, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) claim	Sep. 30, 2021 USD ($) claim	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) claim
Loss Contingencies [Line Items]
Proceeds from issuance of Class A Common Stock pursuant to the PIPE Financing	$ 761,400				$ 761,400	$ 0
Accrued contingent liabilities				$ 13,730	$ 13,730		$ 6,025
Number of pending legal matters | claim				5	5		4
Accrued contingent liabilities, current				$ 13,730	$ 13,730		$ 5,025
Accrued contingent liabilities, noncurrent							1,000
Aggregate principal amounts of debt converted					2,863	$ 0
Settled Legal Matter
Loss Contingencies [Line Items]
Accrued contingent liabilities							$ 5,000
Settlement of legal matter			$ 2,850
Number of fully-vested stock options issued (in shares) | shares			847,800
Number of fully-vested stock options issued, exercise price (in dollars per share) | $ / shares			$ 2.55
Loss from settlement of legal matter					6,309
Liability settled			$ 8,459
Settled Legal Matter | Stock Option
Loss Contingencies [Line Items]
Vesting period			21 days
Outstanding Legal Matter
Loss Contingencies [Line Items]
Incremental accrual recorded				7,431	7,431
Outstanding Legal Matter, Breach Of Lease
Loss Contingencies [Line Items]
Damages sought				4,200	4,200
Outstanding Legal Matter, Breach Of Service Contract
Loss Contingencies [Line Items]
Damages sought				1,074	$ 1,074
Outstanding Legal Dispute For Breach Of Lease | Subsequent Event
Loss Contingencies [Line Items]
Aggregate principal amounts of debt converted		$ 1,800
Aggregate principal		$ 3,400
Contractual Interest Rates		5.00%
Palantir
Loss Contingencies [Line Items]
Proceeds from issuance of Class A Common Stock pursuant to the PIPE Financing			$ 25,000
Amount committed			$ 47,000
Hosting arrangement term			6 years
Hosting arrangement, amount paid				$ 3,000