Business Combinations (Tables)

9 Months Ended

Sep. 30, 2012

Business Combinations [Abstract]

Business Acquisition, Pro Forma Information

	Nine Months Ending September 30, 2012				Nine Months Ending September 30, 2011
	As Reported		Pro Forma		As Reported		Pro Forma
	(unaudited)				(unaudited)
	(In thousands, except per share data)
Revenue	$	145,347	$	158,336	$	124,919	$	156,259
Net Income	$	51,824	$	51,242	$	54,048	$	54,389
Basic EPS	$	1.41	$	1.38	$	1.41	$	1.39
Diluted EPS	$	1.32	$	1.30	$	1.31	$	1.29

	Three Months Ending September 30, 2012				Three Months Ending September 30, 2011
	As Reported		Pro Forma		As Reported		Pro Forma
	(unaudited)				(unaudited)
	(In thousands, except per share data)
Revenue	$	53,804	$	54,197	$	42,602	$	52,360
Net Income	$	18,072	$	18,038	$	16,536	$	16,513
Basic EPS	$	0.49	$	0.48	$	0.44	$	0.44
Diluted EPS	$	0.46	$	0.46	$	0.41	$	0.41