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Note 3 - Net Patient Revenues (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Revenue from Contract with Customer, Including Assessed Tax | $ 370,989,000 | $ 328,674,000 | $ 1,095,945,000 | $ 894,415,000 |
Medicare and Medicaid [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss | 15,060,000 |  | 15,060,000 |  | $ 15,351,000
Medicaid [Member] |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 1,838,000 | $ 5,267,000 | $ 5,522,000 | $ 11,314,000 |

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