Variable Interest Entities - Summary of Consolidated Asset and Liabilities Include VIE Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 1,040,039	$ 106,795
Receivables, net	293,407	144,555
Prepaid expenses and other current assets, net	18,968	9,639
Property and equipment, net	9,161	6,456
Intangible assets, net	55,398	60,468
Liabilities
Medical claims and related payables	239,014	162,868
Accounts payable and accrued expenses	112,946	97,244
Variable Interest Entity, Primary Beneficiary
ASSETS
Cash and cash equivalents	104,741	93,053
Restricted cash equivalents	13,210	25,032
Receivables, net	276,590	136,636
Prepaid expenses and other current assets, net	7,046	5,986
Property and equipment, net	1,147	797
Intangible assets, net	7,220	8,208
Other assets, net	10,580	13,343
Assets held for sale and discontinued operations, net	0	4,825
Liabilities
Medical claims and related payables	195,812	97,146
Accounts payable and accrued expenses	81,702	62,294
Other liabilities	4,521	10,926
Liabilities held for sale and discontinued operations	$ 0	$ 3,682