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Note 7 - Stockholders' Equity and Noncontrolling Interest (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2024
Jun. 14, 2023
May 18, 2022
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.18 $ 0.17 $ 0.17 $ 0.16          
Common Stock Dividends, Percentage Increase (Decrease) 5.90%                
Common Stock, Capital Shares Reserved for Future Issuance (in shares) 107,617,000       107,617,000        
Share Repurchase Program, Authorized, Amount                 $ 250,000
Stock Repurchased and Retired During Period, Shares (in shares)     0   1,839,460 0      
Shares Acquired, Average Cost Per Share (in dollars per share)         $ 16.24        
Stock Repurchased and Retired During Period, Value   $ 29,937     $ 29,937        
Share Repurchase Program, Remaining Authorized, Amount $ 190,087       $ 190,087        
Limited Partners' Capital Account, Units Outstanding (in shares)             5,941,643    
At Market Program [Member]                  
At Market Sales Agreement, Maximum Offer Price of Common Shares               $ 450,000  
Stock Issued During Period, Shares, New Issues\ (in shares) 0                
O 2026 Q2 Dividends [Member]                  
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.18                
Unit Dividends Per Share Declared (in dollars per share) $ 0.18       $ 0.18        
O 2026 Q1 Dividends [Member]                  
Common Stock, Dividends, Per Share, Declared (in dollars per share)         $ 0.17        
Unit Dividends Per Share Declared (in dollars per share)   $ 0.17