Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

Amounts Charged to Expense for Stock-based Compensation

The amounts charged to expense for stock-based compensation for the three and six months ended June 30, 2014 and 2013 are presented in the following table:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2014		2013		2014		2013
Restricted stock units	$	2,484	$	2,116	$	4,369	$	3,474
Directors restricted stock grants (1)		100		106		200		206
Employee stock purchase plan		—		38		74		47
Total stock based compensation	$	2,584	$	2,260	$	4,643	$	3,727

(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.