Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 46,682	$ 19,863
Restricted cash	150	150
Accounts receivable, net of allowance for doubtful accounts of $571 and $262 at December 31, 2011 and 2010, respectively	44,567	27,310
Inventories, net	37,888	27,845
Deferred tax assets, net	841	575
Income taxes receivable		2,973
Other current assets	1,933	1,041
Total current assets	132,061	79,757
Property and equipment, net	43,914	42,524
Goodwill	26,943	26,943
Deferred tax assets, net		117
Other intangible assets, net	29,094	35,466
TOTAL ASSETS	232,012	184,807
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Accounts payable	18,562	13,520
Accrued liabilities	8,397	11,956
Income taxes payable	3,876
Interest payable	2,097	2,185
Current portion of long-term debt	767	6,454
Deferred tax liabilities, net		117
Total current liabilities	33,699	34,232
Convertible senior notes, net of discount	99,738	98,555
Long-term debt, less current portion	875	28,127
Warrant liability	16,622	26,193
Deferred tax liabilities, net	2,780	1,153
Total liabilities	153,714	188,260
Commitments and contingencies
Stockholders' equity (deficit):
Cumulative convertible preferred stock, at accreted value; $0.0001 par value, 100,000 shares authorized; zero and 11,205 shares issued and outstanding at December 31, 2011 and 2010, respectively; liquidation preference of $1,000 per share		7,280
Common stock, $0.0001 par value, 80,000,000 shares authorized; 51,957,652 shares issued and 49,153,495 shares outstanding at December 31, 2011; 36,753,891 shares issued and 35,327,893 shares outstanding at December 31, 2010	5	4
Additional paid-in capital	166,814	103,408
Accumulated other comprehensive income (loss)	(44)	97
Accumulated deficit	(86,810)	(113,350)
Treasury stock, at cost; 1,358,299 and 565,199 shares at December 31, 2011 and 2010, respectively	(1,667)	(892)
Total stockholders' equity (deficit)	78,298	(3,453)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)	$ 232,012	$ 184,807