Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Stock-Based Compensation [Abstract]

Total Stock-Based Compensation Expense

	Three Months Ended						Nine Months Ended
(in thousands)	September 30, 2011			September 30, 2010			September 30, 2011			September 30, 2010
Cost of sales:
Software licenses	$	197		$	34		$	270		$	99
Maintenance and service		486			379			1,407			1,111
Operating expenses:
Selling, general and administrative		3,211			2,970			9,162			8,667
Research and development		2,214			1,360			5,735			4,026
Stock-based compensation expense before taxes		6,108			4,743			16,574			13,903
Related income tax benefits		(1,293	)		(1,023	)		(3,797	)		(2,983	)
Stock-based compensation expense, net of taxes	$	4,815		$	3,720		$	12,777		$	10,920
Net impact on earnings per share
Basic earnings per share	$	(0.05	)	$	(0.04	)	$	(0.14	)	$	(0.12	)
Diluted earnings per share	$	(0.05	)	$	(0.04	)	$	(0.14	)	$	(0.12	)