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Stockholders' Equity - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 11, 2024
Mar. 06, 2023
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Termination date of stock repurchase program Mar. 31, 2025 Mar. 31, 2024              
Common stock issued under dividend reinvestment plan     4,021   7,961   8,100 18,394  
Shares outstanding at end of period     9,260,495 [1],[2]   9,537,236 [1],[2]   9,260,495 [1],[2] 9,537,236 [1],[2] 9,383,132
Stock repurchases, value     $ 1,553,000 [1] $ 953,000 $ 553,000 [1] $ 792,000 $ 2,506,000 [1] $ 1,345,000 [1]  
4.875% Notes due 2026                  
Interest Rate     4.875%       4.875%    
Stock Repurchase Program                  
Stock repurchase program, authorized amount   $ 10,000,000              
Period of stock repurchase program   1 year              
Renewed Stock Repurchase Program                  
Stock repurchase program, authorized amount $ 10,000,000                
Period of stock repurchase program 1 year                
Stock repurchases, shares     79,722   27,081   130,737 62,694  
Stock repurchases, value     $ 1,600,000   $ 600,000   $ 2,600,000 $ 1,300,000  
[1] Refer to Note 9 “Stockholders' Equity” for additional information on changes in components of Stockholders' Equity
[2] Totals may not sum due to rounding.