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Share-Based Compensation (Restricted Share Activity) (Details) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Number of Restricted Shares    
Nonvested balance, beginning 84,709 94,506
Granted 996 25,030
Vested (1,540) (34,827)
Forfeited 0 0
Nonvested balance, ending 84,165 84,709
Weighted Average Grant-Date Fair Value    
Nonvested balance, beginning $ 23.10 $ 18.19
Granted $ 40.29 $ 33.00
Vested $ 17.92 $ 16.88
Forfeited $ 0.00 $ 0.00
Nonvested balance, ending $ 23.40 $ 23.10