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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Apr. 19, 2021	Apr. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercises and vesting of stock-based awards			$ 13,714	$ 33,887	$ 18,086
Stock-based compensation expense		$ 2,600	69,326	28,069	291,672
Income (loss) before gain (loss) on sales and income taxes			$ (20,002)	$ (14,528)	$ (25,085)
Issuance of common stock in connection with IPO, net of offering costs (in shares)		11,700,000			9,300,000
IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense		$ 268,500
Issuance of common stock in connection with IPO, net of offering costs (in shares)	53,600,000
Upside Options and Base Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, expiration period			10 years
Share-based payment award, vesting period			4 years
Base Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			4 years
Weighted average grant date fair value, granted (in dollars per share)			$ 15.30	$ 13.83	$ 13.10
Exercises and vesting of stock-based awards			$ 27,000	$ 140,800	$ 196,300
Stock-based compensation expense			10,000	9,500	8,100
Income (loss) before gain (loss) on sales and income taxes			100	200	$ 700
Nonvested award, option, cost not yet recognized, amount			$ 18,000
Nonvested award, cost not yet recognized, period for recognition			2 years
Granted (in shares)			419,000
Upside Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value, granted (in dollars per share)					$ 1.72
Stock-based compensation expense			$ 1,600	$ 1,700	$ 8,500
Nonvested award, option, cost not yet recognized, amount			$ 1,600
Nonvested award, cost not yet recognized, period for recognition			1 year
Granted (in shares)			0	0
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			4 years
Weighted average grant date fair value, granted (in dollars per share)			$ 26.36	$ 21.89	$ 23.56
Stock-based compensation expense			$ 25,000	$ 9,600	$ 4,700
Nonvested award, option, cost not yet recognized, amount			$ 45,800
Nonvested award, cost not yet recognized, period for recognition			3 years
Fair value of RSU vested			$ 8,500
Restricted Stock Units (RSUs) \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, number of shares authorized (in shares)			13,700,000
Share-based payment award, number of shares available for grant (in shares)			4,300,000
Restricted Stock Units (RSUs) \| Discontinued Operations
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 100	$ 100
Restricted Stock Units (RSUs) \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting of award			0.00%
Restricted Stock Units (RSUs) \| Minimum \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting of award			0.00%
Restricted Stock Units (RSUs) \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting of award			200.00%
Restricted Stock Units (RSUs) \| Maximum \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting of award			125.00%
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			3 years
Performance Shares \| Minimum \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			1 year
Performance Shares \| Maximum \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			4 years
Restricted Stock \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting period			2 years
Physician Partners Equity Awards \| Nonemployee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value, granted (in dollars per share)			$ 16.99	$ 21.93	$ 25.95
Stock-based compensation expense			$ 32,900	$ 7,600	$ 200
Nonvested award, option, cost not yet recognized, amount			$ 122,200
Nonvested award, cost not yet recognized, period for recognition			3 years
Shares withheld for tax withholding obligation (in shares)			0
Amended And Restated Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, number of shares authorized (in shares)			103,600,000
Share-based payment award, number of shares available for grant (in shares)			54,400,000