Variable Interest Entities (VIEs) - Schedule of Assets and Liabilities, Variable Interest Entities (Details) - USD ($) $ in Thousands		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents		$ 288,455	$ 293,807	$ 288,027
Investment in marketable securities		2,378	2,498
Income taxes receivable		19,316	10,657
Other receivables		29,496	1,335
Prepaid expenses and other current assets		22,861	17,450
Total current assets		638,496	461,507
Non-current assets
Intangible assets, net		118,179	71,648
Goodwill		419,253	278,831	269,053
Income taxes receivable, non-current		15,943	15,943
Investments in other entities – equity method		39,319	25,774	40,299
Operating lease right-of-use assets		32,601	37,396
Other assets		16,021	1,877
Total non-current assets		716,398	471,854
Total assets	[1]	1,354,894	933,361
Current liabilities
Accounts payable and accrued expenses		106,142	59,949
Fiduciary accounts payable		8,223	7,737
Medical liabilities		209,039	106,657	$ 81,255
Dividend payable		638	638
Finance lease liabilities		554	646
Operating lease liabilities		5,350	4,607
Other liabilities		26,287	18,940
Total current liabilities		365,608	218,674
Non-current liabilities
Deferred tax liability		4,555	4,072
Finance lease liabilities, net of current portion		607	1,033
Operating lease liabilities, net of current portion		30,654	36,289
Other long-term liabilities		14,003	3,586
Total non-current liabilities		475,118	303,919
Total liabilities	[1]	840,726	522,593
Nonrelated Party
Current assets
Receivables, net		225,733	76,780
Related Party
Current assets
Receivables, net		50,257	58,980
Variable Interest Entity, Primary Beneficiary
Current assets
Cash and cash equivalents		158,922	184,078
Investment in marketable securities		2,259	0
Receivables, net		83,977	21,120
Income taxes receivable		0	1,600
Other receivables		15,303	454
Prepaid expenses and other current assets		10,161	9,991
Total current assets		318,873	275,950
Non-current assets
Property and equipment, net		5,875	5,306
Intangible assets, net		87,840	60,906
Goodwill		243,283	140,157
Income taxes receivable, non-current		15,943	15,943
Investments in other entities – equity method		15,442	12,114
Investment in a privately held entity		405	405
Investment in affiliates		224,894	273,182
Restricted cash		40	40
Operating lease right-of-use assets		21,585	28,796
Other assets		3,019	1,149
Total non-current assets		618,326	537,998
Total assets		937,199	813,948
Current liabilities
Accounts payable and accrued expenses		43,800	32,707
Fiduciary accounts payable		8,223	7,737
Medical liabilities		105,486	55,157
Dividend payable		638	638
Income taxes payable		11,041	0
Finance lease liabilities		520	646
Operating lease liabilities		3,487	3,305
Other liabilities		1,351	8,542
Amount due to affiliate		48,142	107,340
Total current liabilities		222,688	216,072
Non-current liabilities
Deferred tax liability		11,237	7,284
Finance lease liabilities, net of current portion		520	1,033
Operating lease liabilities, net of current portion		21,012	28,675
Other long-term liabilities		619	230
Total non-current liabilities		33,388	37,222
Total liabilities		256,076	253,294
Variable Interest Entity, Primary Beneficiary | Related Party
Current assets
Receivables, net		$ 48,251	$ 58,707

[1] The Company’s consolidated balance sheets include the assets and liabilities of its consolidated VIEs. The consolidated balance sheets include total assets that can be used only to settle obligations of the Company’s consolidated VIEs totaling $712.3 million and $540.8 million as of December 31, 2024 and December 31, 2023, respectively, and total liabilities of the Company’s consolidated VIEs for which creditors do not have recourse to the general credit of the primary beneficiary of $207.9 million and $146.0 million as of December 31, 2024 and December 31, 2023, respectively. These VIE balances do not include $224.9 million of investment in affiliates and $48.1 million of amounts due to affiliates as of December 31, 2024 and $273.2 million of investment in affiliates and $107.3 million of amounts due to affiliates as of December 31, 2023 as these are eliminated upon consolidation and not presented within the consolidated balance sheets. See Note 18— “Variable Interest Entities (VIEs)” for further detail.