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Share Compensation (Schedule Of Restricted Stock Award And Restricted Stock Unit Activity) (Details)
3 Months Ended
Mar. 31, 2017
$ / shares
shares
Restricted Stock Awards [Member]  
Shares  
Unvested beginning balance (shares) | shares 11,430
Granted (shares) | shares 0
Vested (shares) | shares (5,715)
Forfeited (shares) | shares 0
Unvested ending balance (shares) | shares 5,715
Weighted Average Grant Date Fair Value  
Weighted average grant date fair value beginning balance (in dollars per share) | $ / shares $ 10.28
Weighted average grant date fair value of granted (in dollars per share) | $ / shares 0.00
Weighted average grant date fair value of vested (in dollars per share) | $ / shares 10.28
Weighted average grant date fair value of forfeited (in dollars per share) | $ / shares 0.00
Weighted average grant date fair value ending balance (in dollars per share) | $ / shares $ 10.28
Restricted Stock Units [Member]  
Shares  
Unvested beginning balance (shares) | shares 3,855,368
Granted (shares) | shares 2,327,258
Vested (shares) | shares (515,963)
Forfeited (shares) | shares (1,105,226)
Unvested ending balance (shares) | shares 4,561,437
Weighted Average Grant Date Fair Value  
Weighted average grant date fair value beginning balance (in dollars per share) | $ / shares $ 10.31
Weighted average grant date fair value of granted (in dollars per share) | $ / shares 6.80
Weighted average grant date fair value of vested (in dollars per share) | $ / shares 10.84
Weighted average grant date fair value of forfeited (in dollars per share) | $ / shares 9.31
Weighted average grant date fair value ending balance (in dollars per share) | $ / shares $ 8.70