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Shareholders’ Equity (Summary of Restricted Stock Awards) (Details) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Vested (in shares)     (2,976)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Vested (in usd per share)     $ 0.00
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Beginning balance (in shares) 1,072,899 1,279,007 1,746,853
Granted (in shares)   4,000 2,976
Vested (in shares) (530,219) (210,108) (423,693)
Forfeited (in shares)     (47,129)
Ending balance in shares (in shares) 542,680 1,072,899 1,279,007
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) $ 13.00 $ 12.86 $ 11.80
Granted (in usd per share)   23.12 8.40
Vested (in usd per share) 12.78 12.41 9.18
Forfeited (in usd per share)     4.41
Ending balance (in usd per share) $ 13.22 $ 13.00 $ 12.86