Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 21,909	$ 46,682
Restricted cash	150	150
Accounts receivable, net of allowance for doubtful accounts of $585 and $571 at September 30, 2012 and December 31, 2011, respectively	44,035	44,567
Inventories, net	42,175	37,888
Deferred tax assets, net	771	841
Other current assets	4,725	1,933
Total current assets	113,765	132,061
Property and equipment, net	52,423	43,914
Goodwill	26,943	26,943
Other intangible assets, net	25,004	29,094
TOTAL ASSETS	218,135	232,012
Current liabilities:
Accounts payable	19,370	18,562
Accrued liabilities	9,489	8,397
Income taxes payable	883	3,876
Interest payable	364	2,097
Convertible senior notes, net of discount	54,062
Current portion of long-term debt	1,002	767
Total current liabilities	85,170	33,699
Convertible senior notes, net of discount		99,738
Long-term debt, less current portion	888	875
Warrant liability	0	16,622
Deferred tax liabilities, net	3,149	2,780
Total liabilities	89,207	153,714
Commitments and contingencies
Stockholders' equity:
Cumulative convertible preferred stock, $0.0001 par value, 100,000 shares authorized; no shares issued and outstanding
Common stock, $0.0001 par value, 80,000,000 shares authorized; 52,918,524 shares issued and 49,108,569 shares outstanding at September 30, 2012; 51,957,652 shares issued and 49,153,495 shares outstanding at December 31, 2011	5	5
Additional paid-in capital	191,367	166,814
Accumulated other comprehensive income (loss)	(60)	(44)
Accumulated deficit	(60,220)	(86,810)
Treasury stock, at cost; 2,077,367 and 1,358,299 shares at September 30, 2012 and December 31, 2011, respectively	(2,164)	(1,667)
Total stockholders' equity	128,928	78,298
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 218,135	$ 232,012