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Note 3 - Acquisitions (Details Textual) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 13, 2026
Mar. 31, 2026
Dec. 31, 2025
WBBJ [Member]      
Payments to Acquire Businesses, Gross $ 25    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred   $ 2  
Payments to Acquire Businesses, Gross     $ 15
Allen Media Group Three Markets [Member]      
Payments to Acquire Businesses, Gross   56  
SGH [Member]      
Payments to Acquire Businesses, Gross   2  
BCI [Member]      
Payments to Acquire Businesses, Gross   80  
AMG [Member]      
Payments to Acquire Businesses, Gross   $ 115