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Stock-Based Compensation
9 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
Stock-Based Compensation

We have an incentive stock plan under which restricted stock units (“RSUs”) were granted to employees. Our annual grant of share-based compensation to employees takes place during the first quarter of each fiscal year. Under the fair value method, compensation cost is measured at the grant date based on the fair value of the award and is recognized over the service period which generally corresponds to the vesting period. Awards under our incentive plan generally vest over periods ranging from one to three years. The number of shares granted to employees and the weighted average fair value per share during the periods presented were (shares in thousands):
 
Nine months ended September 30,
 
2015
 
2014
 
Shares
Granted
 
Weighted
Average
Share Fair
Value
 
Shares
Granted
 
Weighted
Average
Share Fair
Value
 
 
 
 
 
 
 
 
RSUs subject to performance conditions
1,144

 
$
9.04

 
1,372

 
$
8.43

RSUs subject only to service conditions
410

 
8.99

 
409

 
8.43