Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 17,913	$ 17,853
Accounts receivable, net of allowance for doubtful accounts of $140 at June 30, 2015 and $217 at December 31, 2014	33,418	24,213
Inventories	39,608	37,803
Prepaid expenses and other	7,958	7,912
Acquisition-related escrow	88,490	0
Total current assets	187,387	87,781
Property and equipment, net of accumulated depreciation of $63,524 at June 30, 2015 and $68,449 at December 31, 2014	4,340	5,279
Intangible assets, net of accumulated amortization of $15,070 at June 30, 2015 and $14,050 at December 31, 2014	21,068	1,493
Goodwill	1,704	0
Other assets	201	467
Total assets	214,700	95,020
Current liabilities:
Accounts payable	26,992	34,540
Accrued expenses	30,419	23,844
Total current liabilities	57,411	58,384
Convertible senior notes, net	78,238	0
Revolving credit facility	0	5,158
Other long-term liabilities	15,857	932
Total liabilities	$ 151,506	$ 64,474
Commitments and Contingencies
Stockholders’ equity:
Preferred stock, par value $0.001; 2,000 shares authorized and none outstanding	$ 0	$ 0
Common stock, par value $0.001; 100,000 shares authorized, 50,309 and 45,742 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	50	46
Additional paid-in capital	491,355	466,665
Accumulated deficit	(428,211)	(411,165)
Total stockholders’ equity before treasury stock	63,194	55,546
Treasury stock at cost; 0 common shares at June 30, 2015 and 2,436 common shares at December 31, 2014	0	(25,000)
Total stockholders’ equity	63,194	30,546
Total liabilities and stockholders’ equity	$ 214,700	$ 95,020

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).

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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.