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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
     Three Months Ended
     March 31,
(Amounts in thousands, except share and per share amounts) 2016 2015
 Net income $ 22,019 $ 17,822
          
 Weighted average shares outstanding – basic and diluted    5,113,077   5,111,201
          
 Net income per common share – basic and diluted $ 4.31 $ 3.49