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Shareholders' Equity (Changes In Shares Of Common Stock) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Shareholders Equity [Line Items]    
Treasury stock, beginning balance 207,317  
Shares issued, beginning balance 14,397,509  
Stock options exercised 49,761  
Treasury stock, ending balance 154,617 207,317
Shares issued, ending balance 14,692,214 14,397,509
Common Stock [Member]    
Shareholders Equity [Line Items]    
Shares outstanding, beginning balance 14,190,192 14,118,048
Common stock issued for acquisition 294,705  
Restricted stock awards issued 8,800 59,834
Restricted stock awards forfeited (10,183) (3,490)
Stock options exercised 49,761 18,922
Treasury stock purchases   (7,523)
Stock awards $ 4,322 $ 4,401
Shares outstanding, ending balance 14,537,597 14,190,192
Treasury Stock [Member]    
Shareholders Equity [Line Items]    
Treasury stock, beginning balance 207,317 279,461
Restricted stock awards issued (8,800) (59,834)
Restricted stock awards forfeited 10,183 3,490
Stock options exercised (49,761) (18,922)
Treasury stock purchases   7,523
Stock awards $ (4,322) $ (4,401)
Treasury stock, ending balance 154,617 207,317
Common Stock Issued [Member]    
Shareholders Equity [Line Items]    
Shares issued, beginning balance 14,397,509 14,397,509
Common stock issued for acquisition 294,705  
Shares issued, ending balance 14,692,214 14,397,509