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Note 13 - Significant Payors (Details Textual) - ILLINOIS
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Geographic Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]          
Concentration Risk, Percentage 32.00% 38.60% 32.60% 38.50%  
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]          
Concentration Risk, Percentage 18.10% 21.40% 18.40% 21.10%  
Customer Concentration Risk [Member] | Accounts Receivable [Member]          
Concentration Risk, Percentage     16.60%   21.70%