Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

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 for the three and nine months ended September 30:

	Three months ended September 30						Nine months ended September 30
	2012			2011			2012			2011
	(in thousands)
Stock-based compensation expense	$	913		$	2,372		$	3,963		$	3,473
Tax benefit	(245		)	(746		)	(1,061		)	(1,001		)
Stock-based compensation expense, net of tax	$	668		$	1,626		$	2,902		$	2,472