CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (406,787)	$ (60,052)	$ (282,740)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	14,670	14,099	41,413
Stock-based compensation expense	292,394	6,688	5,225
Loss on debt extinguishment	1,590	0	0
Loss (income) from equity method investments	6,766	(514)	747
Deferred income taxes and uncertain tax positions	(3,231)	(2,809)	(16,177)
Release of indemnification assets	1,705	3,475	19,219
Impairments	0	0	98,343
(Gain) loss on sale of assets, net	(473)	(20,401)	0
Distributions of earnings from equity method investments	174	0	0
Other non-cash items	58	(162)	(3,068)
Changes in operating assets and liabilities:
Receivables, net	(149,041)	(59,381)	(23,280)
Prepaid expense and other current assets	(3,916)	(5,085)	(565)
Other assets	3,931	(1,977)	2,425
Medical claims and related payables	76,339	42,383	19,810
Accounts payable and accrued expenses	19,360	24,922	18,451
Other liabilities	(1,698)	5,610	16,336
Net cash provided by (used in) operating activities	(148,159)	(53,204)	(103,861)
Cash flows from investing activities:
Purchase of property and equipment, net	(6,564)	(1,775)	(2,892)
Purchase of intangible assets, net	(6,862)	(575)	(1,014)
Investments in loans receivable and other	(82,831)	(3,847)	(1,154)
Proceeds from repayment of loans receivable and other	7,095	2,058	0
Proceeds from sale of business and property, net of cash divested	(1,344)	26,205	0
Net cash provided by (used in) investing activities	(90,506)	22,066	(5,060)
Cash flows from financing activities:
Proceeds from initial public offering	1,170,942	0	0
Proceeds from equity issuances, net	0	33,590	180,193
Proceeds from exercise of stock options	18,086	814	0
Repurchase of shares, net	0	(6,742)	0
Proceeds from the issuance of long-term debt	100,000	0	0
Repayments of long-term borrowings and other	(119,899)	(3,041)	(3,592)
Equity and debt issuance costs and other	(14,739)	0	0
Distribution to noncontrolling interests	0	0	(303)
Net cash provided by (used in) financing activities	1,154,390	24,621	176,298
Net increase (decrease) in cash, cash equivalents and restricted cash and equivalents	915,725	(6,517)	67,377
Cash, cash equivalents and restricted cash and equivalents from continuing operations, beginning of year	135,178	139,152	76,414
Cash, cash equivalents and restricted cash and equivalents from discontinued operations, beginning of year	3,917	6,460	1,821
Cash, cash equivalents and restricted cash and equivalents, beginning of year	139,095	145,612	78,235
Cash, cash equivalents and restricted cash and equivalents from continuing operations, end of year	1,054,820	135,178	139,152
Cash, cash equivalents and restricted cash and equivalents from discontinued operations, end of year	0	3,917	6,460
Cash, cash equivalents and restricted cash and equivalents, end of year	$ 1,054,820	$ 139,095	$ 145,612