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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2013
Amounts Charged to Expense for Stock-based Compensation

The amounts charged to expense for stock-based compensation for the three months ended March 31, 2013 and 2012 are presented in the following table:

 

     Three Months Ended March 31,  

In thousands

    2013      2012  

Restricted stock units

    $ 1,358       $ 1,212   

Directors restricted stock grants(1)

      100         60   

Employee stock purchase plan

      9         (26 ) 
  

 

 

     

 

 

  

Total stock based compensation

    $ 1,467       $ 1,246   
  

 

 

     

 

 

  

 

(1) — Relates to non-employee directors serving on the Parent Company’s Board of Directors, all of whom have been elected by the Company’s stockholders, as well as non-employee directors serving on NUAL’s Board of Directors.