Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock-Based Compensation Expense

The following table summarizes our stock-based compensation expense by line item in the condensed consolidated statements of operations (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Cost of sales	$	1,063	$	78	$	2,599	$	85
Research and development		8,565		7,133		16,209		13,065
Selling, general and administrative		9,631		5,332		15,319		10,104
Total	$	19,259	$	12,543	$	34,127	$	23,254