CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 172,622	$ 54,092
Marketable securities	9,181	17,682
Accounts receivable, less reserve for doubtful accounts of $19 and $31, respectively	11,073	11,300
Other receivables	564	82
Inventories	23,197	17,998
Prepaid expenses and other current assets	1,304	2,098
Total current assets	217,941	103,252
Property, plant and equipment, net	13,707	13,801
Long-term marketable securities	0	1,633
Intangible assets, net	19,186	12,755
Goodwill	31,026	14,346
Restricted cash	450	450
Total assets	282,310	146,237
Current liabilities:
Accounts payable	7,688	6,724
Accrued liabilities	13,662	12,057
Total current liabilities	21,350	18,781
Convertible senior notes	93,380
Deferred tax liabilities	1,978	451
Other long-term liabilities	1,878	4,257
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, 33,691,278 shares at June 30, 2016 and 32,949,353 shares at December 31, 2015 issued and outstanding	337	329
Additional paid-in capital	238,617	202,527
Accumulated other comprehensive loss	(9,184)	(8,566)
Accumulated deficit	(66,046)	(71,542)
Total stockholders' equity	163,724	122,748
Total liabilities and stockholders' equity	$ 282,310	$ 146,237

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.