The amounts charged to expense for stock-based compensation for the three and nine months ended September 30, 2012 and 2011 are presented in the following table:


	Three Months Ended September 30,					Nine Months Ended September 30,
In thousands	2012		2011			2012		2011
Restricted stock units	$	1,818	$	775		$	5,004	$	2,254
Directors restricted stock grants⁽¹⁾		170		64			290		184
Employee stock purchase plan		27		1			42		124
Stock appreciation rights⁽²⁾		—		(47	)		—		(100	)
Stock options		—		—			—		—

Total stock-based compensation	$	2,015	$	793		$	5,336	$	2,462


(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.
(2) -		All outstanding stock appreciation rights were exercised during 2011. The Company has no current plans to issue stock appreciation rights under the 2005 Amended and Restated Stock Incentive Plan.