Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

For the three months ended March 31, 2017 and 2016, we recorded share-based compensation and related tax benefits as follows:



	Three months ended March 31,
(Dollars in thousands)	2017			2016
Share-based compensation expense	$	9,203		$	6,877
Income tax benefit related to share-based compensation expense	(3,015		)	(2,117		)

As of March 31, 2017, unrecognized share-based compensation expense was as follows:



(Dollars in thousands)	Unrecognized Expense		Weighted Average Expected Recognition Period - in Years
Stock options	$	8,005	2.27
Restricted stock units	42,706		2.50
Total unrecognized share-based compensation expense	$	50,711

The table below provides stock option information related to the 2006 Equity Incentive Plan for the three months ended March 31, 2017:



	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life - in Years	Aggregate Intrinsic Value of In-The- Money Options
Outstanding at December 31, 2016	1,010,557		$	87.24
Exercised	(140,698	)	65.76
Forfeited	(1,605	)	93.18
Outstanding at March 31, 2017	868,254		90.71		3.80	$	82,818,255
Vested and expected to vest at March 31, 2017	848,536		90.25		3.76	81,319,775
Exercisable at March 31, 2017	442,135		76.45		2.69	48,474,704

The table below provides information for restricted stock units under the 2006 Equity Incentive Plan for the three months ended March 31, 2017:



	Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2016	670,969		$	106.64
Granted	54,240		185.72
Vested	(36,414	)	105.65
Forfeited	(9,263	)	107.70
Nonvested at March 31, 2017	679,532		112.99