Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounting Policies [Line Items]
Allowance of bad debt	$ 13,874		$ 3,025	$ 13,874	$ 3,025		$ 7,971	$ 5,169	$ 719	$ 914
Equity securities without readily determinable fair value	6,500			6,500				6,500
Net lease, cost	2,300		2,900	7,100	8,900
Income on the sublease	$ 500			1,300
Impairment loss				$ 600	2,400
Tax receivable agreement liabilities as percent of expected benefit	85.00%			85.00%
Tax receivable agreement, percent recorded in additional paid-in capital	15.00%			15.00%
Deferred revenue	$ 6,600			$ 6,600				$ 8,100
Revenue recognized		$ 8,100
Advertising expense	2,300		4,100	12,600	11,900
Income tax benefit	2,641		$ (393)	$ 5,699	(242)
Number of operating segments | segment				1
Number of reportable segments | segment				1
Repayments of insurance premium financing				$ 5,832	$ 3,707
Geographic Concentration Risk | Revenue Benchmark [Member] | California
Accounting Policies [Line Items]
Concentration risk, percentage				56.00%
Deferred Tax Assets
Accounting Policies [Line Items]
Impact of tax receivable agreement due to exchanges of units	$ 28,500
Tax Receivable Liability
Accounting Policies [Line Items]
Impact of tax receivable agreement due to exchanges of units				$ 14,300
Forecast
Accounting Policies [Line Items]
Revenue recognized						$ 6,600
Class A Common Stock, $0.0001 par value per share
Accounting Policies [Line Items]
Payment to continuing members as percent of amount of tax benefit	85.00%			85.00%
Computer equipment
Accounting Policies [Line Items]
Property and equipment, useful life				5 years
Furniture and fixtures
Accounting Policies [Line Items]
Property and equipment, useful life				7 years
Leasehold improvements
Accounting Policies [Line Items]
Property and equipment, useful life				5 years
Software technology
Accounting Policies [Line Items]
Property and equipment, useful life				3 years
Enhancements
Accounting Policies [Line Items]
Property and equipment, useful life				3 years
Silver Spike | Legacy WMH Class A Unit holders
Accounting Policies [Line Items]
Percentage of voting interests held (over 50%)	50.00%			50.00%