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Stock-Based Compensation (Time Based Restricted Stock Awards) (Details) (Time Based Restricted Stock [Member])
6 Months Ended
Jun. 30, 2014
Time Based Restricted Stock [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested awards outstanding at beginning balance (shares) 231,026
Awards granted (shares) 66,380
Stock issued (shares) (46,712)
Awards forfeited (shares) (2,775)
Non-vested awards outstanding ending balance (shares) 247,919