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Basis of Presentation - Additional Information (Details) |  |  | 3 Months Ended | 8 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Oct. 01, 2018 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) segment unit | Sep. 30, 2018 USD ($) | Sep. 01, 2019 USD ($) | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  | 1 |  |  |  |  |
Number of reportable segments | segment |  |  |  |  | 1 |  |  |  |  |
Amount deposit accounts exceeded FDIC insured limit |  |  | $ 248,700,000 |  | $ 248,700,000 |  |  |  |  |
Amount of short-term marketable securities |  |  | 1,154,480 |  | 1,154,480 |  |  |  | $ 1,127,102 |
Allowance for doubtful accounts |  |  | 2,900,000 |  | 2,900,000 |  |  |  | 4,300,000 |
Impairment of finite-lived intangible assets |  |  |  |  | 0 | $ 0 |  |  |  |
Impairment of long-lived assets |  |  |  |  | $ 0 | 0 |  |  |  |
Number of main reporting units | unit |  |  |  |  | 3 |  |  |  |  |
Impairment of goodwill |  |  |  |  | $ 0 | 0 |  |  |  |
Impairment of indefinite-lived intangible assets |  |  |  |  | $ 0 | $ 0 |  |  |  |
Expected period of payment upon termination of agreement |  |  |  |  | 30 days |  |  |  |  |
Payments received |  | $ 5,500,000 |  | $ 7,300,000 | $ 8,300,000 |  |  |  |  |
AIPBP payments |  |  |  |  |  |  | $ 3,700,000 |  |  |
Accrued contract liability recognized |  |  |  |  | 500,000 |  |  |  |  |
Contract liability balance |  |  | 17,000,000 |  | $ 17,000,000 |  |  |  | $ 9,100,000 |
Voting rights held (more than) |  |  |  |  | 50.00% |  |  |  |  |
Right-of-use assets |  |  | 13,540,129 |  | $ 13,540,129 |  |  | $ 9,000,000 |  |
Lease liabilities |  |  | 13,506,374 |  | 13,506,374 |  |  | $ 8,900,000 |  |
Pacific Ambulatory Surgery Center, LLC |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of investments | $ 300,000 |  |  |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Payments received |  |  |  |  | 45,000,000 |  |  |  |  |
Accrued contract liability recognized |  |  |  |  | 36,500,000 |  |  |  |  |
Other Receivables |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Recoverable claims paid |  |  | $ 11,400,000 |  | $ 11,400,000 |  |  |  |  | $ 3,000,000
PMPM Managed Care Contract |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
General term of contracts |  |  | 1 year |  | 1 year |  |  |  |  |
Participation Agreement |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
General term of contracts |  |  | 2 years |  | 2 years |  |  |  | 2 years |
Management Fee Income Contract |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
General term of contracts |  |  | 10 years |  | 10 years |  |  |  |  |
CMS |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Expected period of payment upon termination of agreement |  |  |  |  | 30 days |  |  |  |  |
Medicare license |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived assets written off |  |  | $ 2,000,000 |  |  |  |  |  |  |

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