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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2015
Restricted Stock Units (RSU) and Performance Share Awards (PSAs) [Member]  
Summary of Stock Option Activity

The following table summarizes RSU and PSA activity during periods indicated:

 

Units

   2015     2014  

Balance at January 1,

     888,942        1,001,814   

Granted

     119,882        133,089   

Forfeited

     (67,179     (11,605

Shares delivered

     (178,467     (83,051
  

 

 

   

 

 

 

Balance at March 31,

     763,178        1,040,247   
  

 

 

   

 

 

 
Compensation Expense for Stock Option Activity

The following table sets forth aggregate RSU and PSA compensation expense for the periods indicated:

 

     March 31  

In thousands

   2015      2014  

Three months ended

   $ 367       $ 579   
Stock Only Stock Appreciation Rights (SOSARs) [Member]  
Summary of Stock Option Activity

The following table sets forth information related to outstanding SOSARS.

 

     2015      2014  

SOSARS

   Shares     Wtd Avg
Exercise
Price
     Shares     Wtd Avg
Exercise
Price
 

Outstanding at January 1,

     1,864,707      $ 16.20         1,977,133      $ 13.91   

Granted

     406,142        24.94         275,529        29.89   

Exercised

     (58,343     13.52         (15,974     15.48   

Canceled / forfeited

     —          —           —          —     
  

 

 

      

 

 

   

Outstanding at March 31,

     2,212,506      $ 17.88         2,236,688      $ 15.86   
  

 

 

      

 

 

   

SOSAR Grants

                         

Weighted average grant date fair value per share

   $ 7.54         $ 9.85     

Aggregate grant date fair value (in thousands)

   $ 3,063         $ 2,713     

Black-Scholes assumptions

         

Dividend yield

     1.92        1.47  

Risk free rate of return

     1.64        1.73  

Volatility

     36.48        37.59  

Expected life

     6 yrs           6 yrs     
Compensation Expense for Stock Option Activity

The following table sets forth SOSAR compensation expense for the periods indicated:

 

     March 31  

In thousands

   2015      2014  

Three months ended

   $ 589       $ 449