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Stock Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
The following table summarizes transactions for our RSUs, excluding dividend equivalents, for 2013: 
Restricted Stock Units
Number of
RSUs
 
Weighted
Average
Grant Date
Fair Value
RSUs at December 31, 2012
2,680,765

 
$12.26
Granted
834,435

 
$16.32
Vested
(974,476
)
 
$12.00
Forfeited
(196,043
)
 
$13.47
RSUs at December 31, 2013
2,344,681

 
$13.71