Note 4 - Net Patient Revenues (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Revenue from Contract with Customer, Including Assessed Tax	$ 397,446,000	$ 370,989,000	$ 1,145,610,000	$ 1,095,945,000
Medicare and Medicaid [Member]
Accounts Receivable, Allowance for Credit Loss	15,563,000		15,563,000		$ 13,739,000
Medicaid [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 0	$ 1,838,000	$ 3,605,000	$ 5,522,000

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details