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Acquisitions of Businesses, 2020 Acquisition (Details) |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) Clinic | Jun. 30, 2021 USD ($) Clinic | Mar. 31, 2021 USD ($) Clinic | Nov. 30, 2020 USD ($) Clinic Installment | Sep. 30, 2020 USD ($) Contract | Feb. 27, 2020 USD ($) Partnership Clinic | Dec. 31, 2021 USD ($) Clinic Partnership | Dec. 31, 2020 Clinic Partnership | Dec. 31, 2019 Partnership | Sep. 30, 2021 USD ($)
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Number of clinics | Clinic |  |  |  |  |  |  | 5 | 3 |  |
Number of partnerships in which interest acquired | Partnership |  |  |  |  |  |  | 5 | 5 | 4 |
Previous Owners [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Percentage of retained interest by previous owners |  | 35.00% | 30.00% | 25.00% |  |  |  |  |  |
Management Contracts [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  |  | 70.00% |  |  |  |  |
Number of management contracts | Contract |  |  |  |  | 6 |  |  |  |  |
Aggregate purchase price for the acquisition |  |  |  |  | $ 4,200,000 |  |  |  |  |
Cash paid for acquisition |  |  |  |  | 3,700,000 |  |  |  |  |
Notes payable |  |  |  |  | $ 500,000 |  |  |  |  |
Management Contracts [Member] | Notes Payable One [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Notes payable |  |  |  | $ 300,000 |  |  |  |  |  |
Management Contracts [Member] | Notes Payable Two [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Notes payable |  |  |  |  |  |  |  |  |  | $ 200,000
Clinic Practice [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired | 75.00% | 65.00% | 70.00% | 75.00% |  | 65.00% | 75.00% |  |  |
Number of clinics | Clinic | 3 | 8 | 5 | 3 |  | 4 |  |  |  |
Number of partnerships in which interest acquired | Partnership |  |  |  |  |  | 4 |  |  |  |
Aggregate purchase price for the acquisition | $ 3,700,000 | $ 10,300,000 | $ 12,000,000.0 | $ 8,900,000 |  | $ 11,900,000 |  |  |  |
Cash paid for acquisition | 3,500,000 | 9,000,000.0 | 11,700,000 | $ 8,600,000 |  | 11,600,000 |  |  |  |
Number of installments | Installment |  |  |  | 2 |  |  |  |  |  |
Principal installments |  |  |  | $ 162,500 |  |  |  |  |  |
Notes payable | $ 200,000 | $ 300,000 | $ 300,000 | $ 300,000 |  | $ 300,000 | $ 200,000 |  |  |
Percentage of interest accrued | 3.25% | 3.25% | 3.25% | 3.25% |  | 4.75% | 3.25% |  |  |
Clinic Practice [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired | 5.00% |  |  |  |  | 10.00% | 5.00% | 20.00% | 1.00% |
Clinic Practice [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Description [Abstract] |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired | 35.00% |  |  |  |  | 83.80% | 35.00% | 35.00% | 20.00% |

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