Stock-based Compensation Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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

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



	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Cost of goods sold	$	679	$	672	$	1,974	$	1,902
Research and development	1,371		1,388		3,951		3,675
Selling, general and administrative	4,752		5,288		15,486		15,096
Restructuring expenses	—		—		2,595		—
Stock-based compensation expense	$	6,802	$	7,348	$	24,006	$	20,673

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



	September 30,
	2014		2013
Capitalized in inventory	$	665	$	789

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

The weighted average 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,
	2014		2013		2014		2013
Stock Option Awards:
Weighted average grant date fair value per share	$	—	$	7.65	$	7.32	$	5.92
Total fair value of awards granted	$	—	$	278	$	4,446	$	6,095
Total fair value of awards vested	$	—	$	33	$	4,662	$	5,059
Total intrinsic value of options exercised	$	4,884	$	1,910	$	26,217	$	3,748
Restricted Stock Unit Awards:
Weighted average grant date fair value per share	$	—	$	31.30	$	32.85	$	23.91
Total fair value of awards granted	$	—	$	2,427	$	21,830	$	28,063
Total fair value of awards vested	$	287	$	222	$	28,049	$	13,541
Employee Stock Purchase Plan:
Weighted average grant date fair value per share	$	—	$	—	$	7.87	$	5.25
Total fair value of shares estimated to be issued	$	—	$	—	$	591	$	552

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, 2013	7,338		$	22.38	4.6
Granted	608		33.86
Exercised	(1,735	)	19.19
Forfeited	(83	)	29.95
Outstanding at September 30, 2014	6,128		$	24.32	4.7	$	47,251
Exercisable at September 30, 2014	4,949		$	23.36	3.8	$	42,453
Vested and expected to vest at September 30, 2014	6,069		$	24.28	4.7	$	47,011

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, 2013	2,788		$	21.16
Granted	665		32.85
Vested and distributed	(815	)	34.36
Forfeited	(162	)	22.56
Outstanding at September 30, 2014	2,476		$	26.49