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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share
  Three Months Ended     
  March 31,     
(In thousands except share and per share data)   2015   2014 
Basic        
       Net income   $ 5,539   $ 5,811
       Weighted-average common shares outstanding     11,440,356   11,478,116
                     Basic earnings per share     $ .48   $ .51
Diluted      
       Net income   $ 5,539   $ 5,811
       Weighted-average common shares outstanding     11,440,356   11,478,116
       Effect of dilutive restricted stock and stock appreciation rights   161,497   194,707
       Weighted-average common shares outstanding assuming dilution     11,601,853   11,672,823
              Diluted earnings per share     $ .48   $ .50