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Business Combinations and Goodwill - Additional Information (Details) $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 10, 2019 USD ($) acquisition | Aug. 30, 2019 USD ($) | May 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Aggregate purchase price |  |  |  | $ 11,354 | $ 49,403 | $ 0
Acquisition of Alpha Care | APC and APC-LSMA |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Interest acquired |  |  | 100.00% |  |  |
Aggregate purchase price |  |  | $ 45,056 |  |  |
Escrow deposit |  |  | $ 2,000 |  |  |
Accountable Health Care IPA |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration transferred |  | $ 25,100 |  |  |  |
Assets and liabilities assumed |  | $ 15,400 |  |  |  |
Accountable Health Care IPA | Dr. Jay |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Interest acquired |  | 75.00% |  |  |  |
Consideration transferred |  | $ 7,300 |  |  |  |
Accountable Health Care IPA | APC and APC-LSMA | Dr. Jay |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Interest acquired |  | 75.00% |  |  |  |
Aggregate purchase price |  | $ 7,250 |  |  |  |
Consideration transferred |  | $ 7,300 |  |  |  |
Accountable Health Care IPA | APC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Interest acquired |  | 25.00% |  |  |  |
Payments to acquire investments |  | $ 2,400 |  |  |  |
AMG |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration transferred | $ 1,600 |  |  |  |  |
Number of additional acquisitions completed | acquisition | 1 |  |  |  |  |
AMG | APC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Interest acquired | 100.00% |  |  |  |  |
Value of shares transferred in acquisition | $ 400 |  |  |  |  |

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