STOCK BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2011

Stock-Based Compensation Expense Resulting from Stock Option Awards and ESPP

The following table presents the total stock-based compensation expense resulting from stock option awards and the ESPP included in the condensed consolidated statements of income:

In thousands
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Cost of revenues – stock option plan	$	33	$	55	$	89	$	170
Selling, general and administrative – stock option plan		3,336		3,341		10,122		10,464
Selling, general and administrative – restricted stock units		219		87		593		173
Selling, general and administrative – ESPP		257		217		759		634
Total pre-tax expense	$	3,845	$	3,700	$	11,563	$	11,441

Tax Benefits Related to Stock Compensation

The following table sets forth the tax benefits related to stock compensation:

In thousands
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Tax benefit recognized in income statement	$	291	$	1,486	$	2,468	$	4,547
Excess tax benefit realized		2,065		4,521		16,614		17,951

Assumptions Used in Black-Scholes Model

The assumptions that we used in the Black-Scholes model are as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2011			2010			2011			2010
Expected term (in years)		5.75			5.75			5.75			5.75
Expected volatility		27.70	%		27.62	%		27.41	%		28.39	%
Expected dividend yield		0	%		0	%		0	%		0	%
Risk free interest rate		1.38	%		1.71	%		2.23	%		2.38	%

Weighted Average Grant Date Fair Value of Stock Options Granted

The weighted average grant date fair value of the stock options granted during the three and nine months ended September 30, 2011 and 2010 was as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
Weighted average fair value at grant date	$	19.94	$	15.36	$	21.09	$	13.43

Stock Option Activity

Stock option activity for the nine months ended September 30, 2011, was as follows:

	Number of Options			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life			Aggregate Intrinsic Value
							(in years	)
Outstanding at December 31, 2010		6,508,833		$	41.86
Granted		1,036,276			85.33
Exercised		(940,323	)		32.35
Cancelled or expired		(204,373	)		52.10
Outstanding at September 30, 2011		6,400,413		$	49.97		6.71		$	201,525,724
Exercisable at September 30, 2011		3,370,240		$	40.05		5.51		$	137,510,507
Vested and expected to vest in the future at September 30, 2011		5,867,818		$	48.61		6.55		$	192,179,037

Intrinsic Value of Options Exercised

The total exercise intrinsic value represents the total pre-tax value (the difference between the sales price on that trading day in the quarter ended September 30, and the exercise price associated with the respective option).

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
Total exercise intrinsic value of options exercised	$	6,387	$	14,485	$	51,876	$	56,318

Restricted Stock Units (RSUs) Activity

Restricted stock units (RSUs) activity for the nine months ended September 30, 2011, was as follows:

	Number of Units			Weighted Average Remaining Contractual Life			Aggregate Intrinsic Value
					(in years	)
Outstanding at December 31, 2010		20,000
Granted		18,488
Forfeited		(3,250	)
Outstanding at September 30, 2011		35,238			1.89		$	2,844,411
Exercisable at September 30, 2011		0			0.00		$	0
Vested and expected to vest in the future at September 30, 2011		28,115			1.86		$	2,269,406