v3.26.1
Note 9 - Stock Incentive Plan (Details Textual) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dividends Payable $ 19,986,000   $ 21,865,000
Performance Shares [Member]      
Dividends Payable $ 27,000   $ 6,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) [1] (0) 2,393  
Performance Shares [Member] | Former Employee [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)     2,393
Deferred Stock Units [Member]      
Dividends Payable $ 75,000   $ 74,000
The 2021 Incentive Plan [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum     10.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     1,473,324
[1] During 2025, a participant's service as an employee of the Manager ended, resulting in the forfeiture of 2,393 PUs as provided in the Plans.