Business Acquisitions - Summary of Company's Assets and Liabilities and Reconciliation of Cash Paid for Net Assets Acquired (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jan. 02, 2020
Business Acquisition [Line Items]
Goodwill	$ 546,312		$ 234,328
Acquisitions of subsidiaries, including non-compete intangibles, net of cash acquired	617,576	$ 205,325
Primary Care Physicians and Related Entities
Business Acquisition [Line Items]
Accounts receivable	185	486		$ 486
Other assets	2,601	433
Property and equipment	2,128	4,012		1,518
Goodwill	311,963	89,976		13,738
Intangibles	372,210	162,536		43,549
Total assets acquired	689,087	257,443
Due to sellers	295	16,288		$ 274
Contingent consideration	9,600
Other liabilities	1,616	1,530
Total liabilities assumed	11,511	17,818
Net Assets Acquired	677,576	239,625
Issuance of Parent equity in connection with acquisitions	60,000	34,300
Acquisitions of subsidiaries, including non-compete intangibles, net of cash acquired	$ 617,576	$ 205,325

Business combination recognized identifiable assets acquired And liabilities assumed assets other.

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Business combination recognized identifiable assets acquired and liabilities assumed liabilities other.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of assets acquired at the acquisition date.

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The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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