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Shareholders' Equity (Changes in Shares of Common Stock) (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Shareholders Equity [Line Items]              
Treasury stock, beginning balance     759,555       759,555
Shares issued, beginning balance 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556
Treasury stock purchases             766,447
Treasury stock, ending balance 697,756           697,756
Shares issued, ending balance 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556 16,099,556
Common Stock [Member]              
Shareholders Equity [Line Items]              
Shares outstanding, beginning balance 15,401,800 15,375,479 15,340,001 15,334,091 15,299,077 15,745,453 15,340,001
Restricted stock awards issued   20,185     11,300    
Stock awards   5,945     3,848    
Restricted stock units released   296 58,188   31,141 23,271  
Treasury stock purchases 0 (105) (22,710) 0 (11,275) (469,647)  
Shares outstanding, ending balance 15,401,800 15,401,800 15,375,479 15,334,091 15,334,091 15,299,077 15,401,800
Treasury Stock [Member]              
Shareholders Equity [Line Items]              
Treasury stock, beginning balance 697,756 724,077 759,555 765,465 800,479 354,103 759,555
Restricted stock awards issued   (20,185)     (11,300)    
Stock awards   (5,945)     (3,848)    
Restricted stock units released   (296) (58,188)   (31,141) (23,271)  
Treasury stock purchases 0 105 22,710 0 11,275 469,647  
Treasury stock, ending balance 697,756 697,756 724,077 765,465 765,465 800,479 697,756