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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2014
Shareholders' Equity [Abstract]  
Changes In Shares Of Common Stock
  Outstanding   Treasury   Issued
2014          
Shares outstanding at beginning of year 13,829,355   332,242   14,161,597
Shares issued for the SDN acquisition 235,912   -   235,912
Restricted stock awards issued 43,242   (43,242 ) -
Restricted stock awards forfeited (15,441 ) 15,441   -
Stock options exercised 34,082   (34,082 ) -
Treasury stock purchases (9,102 ) 9,102   -
Shares outstanding at end of year 14,118,048   279,461   14,397,509
 
2013          
Shares outstanding at beginning of year 13,787,709   373,888   14,161,597
Restricted stock awards issued, net of forfeitures 24,058   (24,058 ) -
Stock options exercised 23,265   (23,265 ) -
Treasury stock purchases (11,349 ) 11,349   -
Directors' retainer 5,672   (5,672 ) -
Shares outstanding at end of year 13,829,355   332,242   14,161,597