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Share-Based Compensation (Summary of Restricted Stock Awards) (Details) - Restricted Stock [Member]
3 Months Ended
Mar. 31, 2016
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Beginning balance, in shares | shares 1,072,899
Vested, in shares | shares (30,220)
Ending balance in shares | shares 1,042,679
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Beginning balance, in usd per share | $ / shares $ 13.00
Vested, in usd per share | $ / shares 5.53
Ending balance, in usd per share | $ / shares $ 13.22