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Shareholders' Equity (Details)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Shareholders Equity [Line Items]    
Treasury stock, beginning balance 332,242  
Shares issued, beginning balance 14,161,597  
Stock options exercised 5,925  
Treasury stock, ending balance 308,614  
Shares issued, ending balance 14,161,597  
Common Stock [Member]
    
Shareholders Equity [Line Items]    
Shares outstanding, beginning balance 13,829,355 13,787,709
Restricted stock awards issued 33,842 33,035
Restricted stock awards forfeited (7,037) (6,237)
Stock options exercised 5,925 800
Treasury stock purchases (9,102) (11,349)
Shares outstanding, ending balance 13,852,983 13,803,958
Treasury Stock [Member]
    
Shareholders Equity [Line Items]    
Treasury stock, beginning balance 332,242 373,888
Restricted stock awards issued (33,842) (33,035)
Restricted stock awards forfeited 7,037 6,237
Stock options exercised (5,925) (800)
Treasury stock purchases 9,102 11,349
Treasury stock, ending balance 308,614 357,639
Issued [Member]
    
Shareholders Equity [Line Items]    
Shares issued, beginning balance 14,161,597 14,161,597
Restricted stock awards issued      
Restricted stock awards forfeited      
Stock options exercised      
Treasury stock purchases      
Shares issued, ending balance 14,161,597 14,161,597