Share Based Payments (Tables)

3 Months Ended

Mar. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity under all Equity Plans

A summary of stock option activity under all equity plans for the three months ended March 31, 2014 is as follows:

	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2013		2,710		$	34.05
Options granted		100			97.93
Options exercised		(202	)		14.71
Options canceled or expired		(34	)		46.61
Outstanding at March 31, 2014		2,574		$	37.88

Recognized Stock-Based Compensation Expense on all Stock Option Awards

The Company recognized stock-based compensation expense on all stock option awards for the three months ended March 31, 2014 and 2013, as follows:

	Three Months Ended March 31,
	2014		2013
Research and development	$	1,467	$	664
Selling, general and administrative		1,714		1,052
	$	3,181	$	1,716