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Statements of Common Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2021 $ 88,230 $ 64,392 $ 152,622
Balance (in shares) at Dec. 31, 2021 13,112,948    
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income $ 0 8,888 8,888
Cash dividends declared 0 (5,335) (5,335)
Issuance of common stock $ 43,970 0 43,970
Issuance of common stock (in shares) 1,121,940    
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans $ 881 0 881
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans (in shares) 21,856    
Stock-based compensation $ 158 0 158
Stock-based compensation (in shares) 8,019    
Balance at Jun. 30, 2022 $ 133,239 67,945 201,184
Balance (in shares) at Jun. 30, 2022 14,264,763    
Balance at Mar. 31, 2022 $ 88,725 65,695 154,420
Balance (in shares) at Mar. 31, 2022 13,123,619    
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income $ 0 5,029 5,029
Cash dividends declared 0 (2,779) (2,779)
Issuance of common stock $ 43,970 0 43,970
Issuance of common stock (in shares) 1,121,940    
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans $ 431 0 431
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans (in shares) 11,185    
Stock-based compensation $ 113 0 113
Stock-based compensation (in shares) 8,019    
Balance at Jun. 30, 2022 $ 133,239 67,945 201,184
Balance (in shares) at Jun. 30, 2022 14,264,763    
Balance at Dec. 31, 2022 $ 134,220 72,963 $ 207,183
Balance (in shares) at Dec. 31, 2022 14,285,584   14,285,584
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income $ 0 10,177 $ 10,177
Cash dividends declared 0 (5,795) (5,795)
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans $ 820 0 820
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans (in shares) 19,462    
Stock-based compensation $ 159 0 159
Stock-based compensation (in shares) 4,114    
Balance at Jun. 30, 2023 $ 135,199 77,345 $ 212,544
Balance (in shares) at Jun. 30, 2023 14,309,160   14,309,160
Balance at Mar. 31, 2023 $ 134,679 73,719 $ 208,398
Balance (in shares) at Mar. 31, 2023 14,294,898    
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income $ 0 6,524 6,524
Cash dividends declared 0 (2,898) (2,898)
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans $ 415 0 415
Issuance of common stock under dividend reinvestment, direct stock and employee stock purchase plans (in shares) 10,148    
Stock-based compensation $ 105 0 105
Stock-based compensation (in shares) 4,114    
Balance at Jun. 30, 2023 $ 135,199 $ 77,345 $ 212,544
Balance (in shares) at Jun. 30, 2023 14,309,160   14,309,160