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Fair Value of Financial Instruments - Narrative (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	$ 64,319	$ 75,414
Shorelight Holdings LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity date	Jan. 17, 2027	Jan. 17, 2027
Contingent consideration for business acquisitions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.059	0.063
Convertible debt investment | Shorelight Holdings LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	$ 40,900
Interest rate (as a percent)	1.69%
Preferred Stock | Medically Home Group Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments			$ 5,000
Cumulative unrealized gains	$ 28,600
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Cumulative Amount	26,300
Equity securities without readily determinable fair value	$ 7,400	$ 7,400
Discount rate | Convertible debt investment | Shorelight Holdings LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.230	0.245
Price volatility | Convertible debt investment | Shorelight Holdings LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.400	0.350

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