Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Compensation Expense and Related Tax Benefits

The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:

	Three Months Ended September 30						Nine Months Ended September 30
	2011			2010			2011			2010
	(in thousands)
Stock-based compensation expense	$	2,372		$	817		$	3,473		$	1,428
Tax benefit	(746		)	(192		)	(1,001		)	(320		)
Stock-based compensation expense, net of tax	$	1,626		$	625		$	2,472		$	1,108