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Note 9 - Shareholders' Equity (Details Textual)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
Jun. 30, 2026
$ / shares
May 31, 2025
USD ($)
Dec. 31, 2017
USD ($)
Common Stock, Shares Authorized (in shares)   500,000,000 500,000,000        
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares   $ 0.01 $ 0.01        
Common Stock, Shares, Outstanding (in shares)   47,708,587 48,912,293        
Proceeds from Issuance of Common Stock | $   $ 54 $ 53 $ 61      
Stock Repurchased During Period, Value | $   $ 8,971          
Preferred Stock, Shares Authorized (in shares)   100,000,000 100,000,000        
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares   $ 0.01 $ 0.01        
Preferred Stock, Shares Issued (in shares)   4,800,000 4,800,000        
Preferred Stock, Shares Outstanding (in shares)   4,800,000 4,800,000        
Long-term Incentive Plan Units [Member] | Unit Distribution [Member]              
Stock Issued During Period, Shares, Conversion of Units (in shares)   33,396          
Capital Units, Outstanding (in shares)   2,191,510          
Series A Redeemable Preferred Stock [Member]              
Stock Issued During Period, Shares, New Issues (in shares) 4,800,000            
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.01            
Preferred Stock, Dividend Rate, Percentage 6.625%            
Proceeds from Issuance of Preferred Stock and Preference Stock | $ $ 115,900            
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares $ 25            
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares 1.65624            
Preferred Stock, Convertible, Conversion Ratio   3.701          
Preferred Stock, Shares Issued (in shares)   4,800,000          
Payments of Dividends | $   $ 8,000          
Preferred Stock, Shares Outstanding (in shares)   4,800,000          
Series A Redeemable Preferred Stock [Member] | Forecast [Member]              
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares         $ 25    
Series A Redeemable Preferred Stock [Member] | Scenario, Change of Control [Member]              
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares $ 25            
Share Repurchase Program Authorized May 2025 [Member]              
Share Repurchase Program, Authorized, Amount | $           $ 25,000  
Stock Repurchased During Period, Shares (in shares)   1,313,795          
Shares Acquired, Average Cost Per Share (in dollars per share) | $ / shares   $ 6.83          
Stock Repurchased During Period, Value | $   $ 9,000          
Share Repurchase Program, Remaining Authorized, Amount | $   16,000          
ATM Equity Offering Program [Member]              
Equity Offering, Maximum Offering Amount | $   $ 100,000          
Stock Issued During Period, Shares, New Issues (in shares)   0          
Equity Offering, Amount Available | $   $ 77,500          
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]              
Equity Offering, Maximum Offering Amount | $             $ 50,000
Stock Issued During Period, Shares, New Issues (in shares)   7,630          
Stock Issued During Period, Weighted Average Price Per Share (in dollars per share) | $ / shares   $ 7.1          
Proceeds from Issuance of Common Stock | $   $ 54          
Equity Offering, Amount Available | $   $ 49,900