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Business Combinations - Textual (Details) - Inpatient Rehabilitation | Sep. 30, 2020 USD ($) | May 31, 2020 bed | Jan. 31, 2020 bed
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Portercare Adventist and Premier Health Partners |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill expected to be tax-deductible amount | $ | $ 0 |  |
Corporate Joint Venture | Portercare Adventist |  |  |
Business Acquisition [Line Items] |  |  |
Business acquisition percentage of voting interests acquired |  |  | 68.00%
Number of beds acquired |  |  | 13
Number of beds contributed |  |  | 40
Number of beds expanded |  |  | 20
Corporate Joint Venture | Premier Health Partners |  |  |
Business Acquisition [Line Items] |  |  |
Business acquisition percentage of voting interests acquired |  | 51.00% |
Number of beds acquired |  | 45 |
Number of de novo beds |  | 60 |

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