Description of Business and Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) sublease classOfReceivable $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Material classes of receivables | classOfReceivable	2
Fair value of loans held for sale	$ 3,712,000	$ 2,650,000
Goodwill	461,349,000	$ 461,349,000
Accumulated impairments to goodwill	0
Lease impairment loss	$ 1,948,000
Operating leases, number of subleases | sublease	2
Net loss per share attributable to common stock—basic (in dollars per share) | $ / shares	$ (1.16)	$ (2.99)	$ (1.12)
Earnings Per Share, Diluted | $ / shares	$ (1.16)	$ (2.99)	$ (1.12)
Technology and development	$ 183,294,000	$ 178,924,000	$ 143,481,000
Net loss	$ (130,026,000)	$ (321,143,000)	$ (109,613,000)
Service Life
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss per share attributable to common stock—basic (in dollars per share) | $ / shares	$ 0.03
Earnings Per Share, Diluted | $ / shares	$ 0.03
Technology and development	$ 3,049,000
Net loss	$ 3,049,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Lives (years)	3 years
Intangible assets, useful life	3 years
Operating lease term	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Useful Lives (years)	5 years
Intangible assets, useful life	10 years
Operating lease term	11 years