Related Parties - Narrative (Details) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2024 USD ($) office	Sep. 30, 2023 USD ($) practice	Sep. 30, 2024 USD ($) office	Sep. 30, 2023 USD ($) practice	Dec. 31, 2023 USD ($)
Related Party Transaction [Line Items]
Notes receivable, amortization period (in months)				60 months
Incremental borrowing rate		6.63%		6.63%		7.18%
Number of offices with operating lease		11	10	11	10
Payments for operating leases				$ 6,534	$ 7,678
Cost of revenue	[1]	$ 433,746	$ 310,894	1,193,283	880,827
Related Party
Related Party Transaction [Line Items]
Payments for operating leases		500	600	1,800	1,900
Cost of revenue		399,848	271,790	1,076,092	777,478
Related Party | Subsidiary Under Common Control of Class A-1
Related Party Transaction [Line Items]
Cost of revenue		395,000	$ 268,000	1,081,000	$ 774,000
Accounts payable		$ 144,000		$ 144,000		$ 120,900
Related Party | Cost of Goods and Service Benchmark | Supplier Concentration Risk | Subsidiary Under Common Control of Class A-1
Related Party Transaction [Line Items]
Concentration risk (in percentage)		91.00%	86.00%	91.00%	88.00%
Related Party | Accounts Payable | Supplier Concentration Risk | Subsidiary Under Common Control of Class A-1
Related Party Transaction [Line Items]
Concentration risk (in percentage)				92.00%		92.00%

[1] Includes related party inventory expense of $399,848 and $271,790 and $1,076,092 and $777,478 for the three and nine months ended September 30, 2024 and 2023, respectively.