Stock-based Compensation Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Share-based Compensation [Abstract]

Stock-based compensation expense and related tax benefit recognized in the Consolidated Statements of Income and capitalized in the Consolidated Balance Sheets

Stock-based compensation expense and related tax benefit recognized in the Consolidated Statements of Income are as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Cost of goods sold	$	895		$	941		$	2,516		$	2,462
Research and development	1,297			1,152			3,771			3,997
Selling, general and administrative	4,405			3,344			13,710			12,854
Stock-based compensation expense before income taxes	6,597			5,437			19,997			19,313
Income tax benefit	(2,005		)	(1,574		)	(6,067		)	(5,565		)
Total stock-based compensation expense after income taxes	$	4,592		$	3,863		$	13,930		$	13,748

Stock-based compensation costs capitalized in inventory are as follows (in thousands):

	September 30,
	2012		2011
Capitalized in inventory	$	514	$	795

Fair value of the stock-based awards, as determined under the Black-Scholes model, granted weighted-average assumptions

The fair value of the stock-based awards, as determined under the Black-Scholes model, granted in the three and nine months ended September 30,2012 and 2011 was estimated with the following weighted-average assumptions:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012		2011
Stock option awards:
Risk-free interest rate	—	—	0.4	%	1.0	%
Expected dividend yield	—	—	1.3	%	0.7	%
Expected term	—	—	4.2 years		4.3 years
Expected volatility	—	—	39.7	%	42.3	%
Employee stock purchase plan:
Risk-free interest rate	—	—	0.2	%	0.1	%
Expected dividend yield	—	—	1.3	%	0.7	%
Expected term	—	—	6 months		6 months
Expected volatility	—	—	27.4	%	21.3	%

Weighted-average fair value of stock-based compensation awards granted and vested, and the intrinsic value of options exercised

The fair value of stock-based compensation awards granted and vested, and the intrinsic value of options exercised during the period were (in thousands, except per share amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Stock Option Awards:
Weighted average grant date fair value per share	$	—	$	—	$	6.43	$	11.68
Total fair value of awards granted	$	—	$	—	$	4,104	$	4,513
Total fair value of awards vested	$	38	$	75	$	6,023	$	8,037
Total intrinsic value of options exercised	$	3,278	$	2,016	$	5,637	$	15,169
Restricted Stock Unit Awards:
Weighted average grant date fair value per share	$	19.84	$	27.43	$	17.23	$	34.41
Total fair value of awards granted	$	121	$	169	$	30,643	$	21,692
Total fair value of awards vested	$	174	$	165	$	12,276	$	19,098
Employee Stock Purchase Plan:
Weighted average grant date fair value per share	$	—	$	—	$	5.02	$	7.36
Total fair value of shares estimated to be issued	$	—	$	—	$	1,106	$	1,051

Information with respect to stock option activity

 Information with respect to stock option activity is as follows:

	Shares (in  thousands)		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2011	6,570		$	20.73	5.0
Granted	638		22.30
Exercised	(405	)	7.74
Forfeited	(125	)	24.41
Outstanding at September 30, 2012	6,678		$	21.60	5.0	$	15,662
Exercisable at September 30, 2012	5,767		$	20.76	4.4	$	15,661
Vested and expected to vest at September 30, 2012	6,632		$	21.56	5.0	$	15,662

Information with respect to restricted stock unit activity

Information with respect to restricted stock unit activity is as follows:

	Shares (in  thousands)		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2011	1,305		$	30.89
Granted	1,781		17.23
Vested and distributed	(555	)	29.23
Forfeited	(119	)	28.71
Outstanding at September 30, 2012	2,412		$	21.39