Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Share Based Compensation and Related Benefits

For the three and nine months ended September 30, 2012 and 2011, we recorded share-based compensation and related tax benefits as follows:



	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2012			2011			2012			2011
Share-based compensation expense	$	5,617		$	4,552		$	16,594		$	13,501
Income tax benefit related to share-based compensation expense	(1,720		)	(1,256		)	(4,408		)	(3,532		)

Unrecognized Share Based Compensation Expense

As of September 30, 2012, unrecognized share-based compensation expense was as follows:



(Dollars in thousands)	Unrecognized Expense		Average Expected Recognition Period - in Years
Stock options	$	17,308	2.80
Restricted stock units	26,662		2.81
Total unrecognized share-based compensation expense	$	43,970

Stock Option Information Related to Equity Incentive Plan

The table below provides stock option information related to the 1997 Equity Incentive Plan and the 2006 Equity Incentive Plan for the nine months ended September 30, 2012:



	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value of In-The- Money Options
Outstanding at December 31, 2011	2,439,360		$	42.64
Granted	395,563		63.90
Exercised	(680,929	)	35.28
Forfeited	(56,996	)	47.90
Expired	(4,568	)	42.50
Outstanding at September 30, 2012	2,092,430		48.91		4.14	$	25,582,079
Vested and expected to vest at September 30, 2012	2,003,907		48.50		4.07	25,221,007
Exercisable at September 30, 2012	1,088,716		44.35		2.88	17,542,729

Information for Restricted Stock Units under Equity Incentive Plan

The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the nine months ended September 30, 2012:



	Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2011	499,119		$	52.72
Granted	313,040		63.83
Vested	(144,953	)	51.25
Forfeited	(26,700	)	54.89
Nonvested at September 30, 2012	640,506		58.39