CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 48,084	$ 35,363
Marketable securities	20,790	23,090
Accounts receivable, less reserve for doubtful accounts of $52 and $41, respectively	10,321	7,760
Other receivables	57	240
Inventories	15,899	12,384
Deferred tax asset, net	5	5
Prepaid expenses and other current assets	1,123	2,104
Total current assets	96,279	80,946
Property, plant and equipment, at cost:
Leasehold improvements	13,258	9,108
Equipment	13,513	13,116
Furniture and fixtures	2,722	2,270
Construction in progress	228	3,848
Total property, plant and equipment, at cost	29,721	28,342
Less: Accumulated depreciation	(15,748)	(13,816)
Property, plant and equipment, net	13,973	14,526
Long-term marketable securities	1,651	3,550
Intangible assets, net	13,154	14,636
Goodwill	14,346	14,185
Restricted cash	450	450
Total assets	139,853	128,293
Current liabilities:
Accounts payable	2,951	3,863
Accrued liabilities	12,758	6,819
Total current liabilities	15,709	10,682
Other long-term liabilities	$ 2,693	$ 5,879
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 80,000,000 shares authorized, 32,943,553 shares at September 30, 2015 and 32,774,374 shares at December 31, 2014 issued and outstanding	$ 329	$ 328
Additional paid-in capital	201,657	198,064
Accumulated other comprehensive income (loss)	(8,728)	(5,773)
Accumulated deficit	(71,807)	(80,887)
Total stockholders' equity	121,451	111,732
Total liabilities and stockholders' equity	$ 139,853	$ 128,293