Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2014

Equity [Abstract]

Summary of Restricted Stock Unit Activity

The following table summarizes RSU activity for the nine months ended September 30, 2014 (number of units and aggregate intrinsic value in thousands):

	Number of Units			Weighted Average Grant- Date Fair Value		Aggregate Intrinsic Value
Units outstanding, beginning of period		1,279		$	9.67
Granted		502			16.73
Released		(369	)		7.51
Forfeited		(144	)		12.83
Units outstanding, end of period		1,268			12.75	$	19,575

Summary of the Company's Stock Options Activity

The following table summarizes stock option activity for the nine months ended September 30, 2014 (number of options and aggregate intrinsic value in thousands):

	Number of options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value
Options outstanding, beginning of period		3,366		$	6.15
Granted		—
Exercised		(1,218	)		7.06
Expired / forfeited		(54	)		10.29
Options outstanding, end of period		2,094			5.51		4.70	$	20,925
Exercisable at September 30, 2014		2,055			5.53		4.70		20,508
Expected to vest after September 30, 2014		27			4.73		4.89		287

Share-Based Compensation

Share-based compensation was classified as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Cost of products sold	$	61	$	50	$	149	$	134
Sales, general and administrative expenses		940		736		2,598		2,293
Research and development expenses		436		177		1,374		479
Total share-based compensation	$	1,437	$	963	$	4,121	$	2,906