Balance Sheets Details (Tables)

9 Months Ended

Sep. 30, 2013

Balance Sheets Details [Abstract]

Schedule of inventory components

Inventory, net consisted of the following (in thousands):

	September 30, 2013		December 31, 2012
Raw materials	$	802	$	588
Work in process	235		52
Finished goods	1,064		662
Inventory, net	$	2,101	$	1,302

Schedule of property and equipment, net

Property and equipment, net consisted of the following (in thousands):

	September 30, 2013			December 31, 2012
Laboratory equipment	$	35,311		$	33,776
Leasehold improvements	11,108			11,099
Computer equipment	3,419			4,388
Office furniture and equipment	1,503			1,531
	51,341			50,794
Less: accumulated depreciation	(37,780		)	(34,172		)
	13,561			16,622
Construction in progress	248			28
Property and equipment, net	$	13,809		$	16,650

Schedule of changes in accumulated other comprehensive income (loss) by components

The changes in accumulated other comprehensive income (loss) by component and related tax effects were as follows (in thousands):

Balance as of December 31, 2012	$	(136	)
Unrealized gains (losses) on available-for-sale securities	447
Tax effects	(172		)
Balance as of September 30, 2013	$	139