Stock Plans (Tables)

9 Months Ended

Sep. 30, 2011

Stock Plans [Abstract]

Stock Compensation Expense

	Three Months Ended September 30				Nine Months Ended September 30
(In thousands)	2011		2010		2011		2010
Stock compensation expense	$	1,613	$	1,471	$	6,256	$	5,875
Income tax benefit		595		539		2,129		2,118
Stock compensation expense, net of income tax benefit		1,018		932		4,127		3,757

Summary Of Stock Option Activity

	Shares			Weighted Average Exercise Price
Outstanding at January 1, 2011		1,749,003		$	29.74
Granted		166,247			34.09
Exercised		(41,130	)		18.28
Outstanding at September 30, 2011		1,874,120			30.38
Exercisable at September 30, 2011		963,078			36.86

Summary Of Restricted Stock Activity

	Shares			Weighted Average Grant Date Fair Value
Unvested at January 1, 2011		473,637		$	26.56
Granted		124,991			33.61
Vested		(76,105	)		44.43
Forfeited		(9,986	)		32.21
Unvested at September 30, 2011		512,537			25.51

Summary Of Performance Stock Unit Activity

	Shares		Weighted Average Grant Date Fair Value
Unvested at January 1, 2011		85,629	$	20.53
Granted		41,320		33.55
Unvested at September 30, 2011		126,949		24.77