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Note 3 - Net Patient Revenues (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenue from Contract with Customer, Including Assessed Tax | $ 1,251,759,000 | $ 1,087,614,000 | $ 1,029,085,000
Accounts Receivable, Allowance for Credit Loss | 9,702,000 | 8,054,000 |
Medicare and Medicaid [Member] |  |  |
Accounts Receivable, Allowance for Credit Loss | 15,351,000 | 18,369,000 |
Medicaid [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 12,749,000 | $ 20,214,000 | $ 19,442,000

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