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Share-Based Compensation (Restricted Stock) (Details) - Restricted stock awards - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Restricted Stock Awards        
Granted (in shares)   0   44,567
Vested (in shares) 106,369 174,776 271,874 349,017
Forfeited (in shares) 0 0 0 0
Fair value (in dollars) $ 0 $ 0 $ 0 $ 9,000
Minimum        
Restricted Stock Awards        
Vesting period     6 years  
Maximum        
Restricted Stock Awards        
Vesting period     24 years