Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 43,656	$ 36,940
Short-term investments	26,908	64,301
Accounts receivable, net of allowance for doubtful accounts	78,898	70,354
Inventories	63,687	43,793
Prepaid expenses and other current assets	10,285	10,256
Total current assets	223,434	225,644
Property, plant and equipment, net	70,818	54,440
Purchased intangible assets, net	16,309	14,213
Other long-term assets	1,836	1,335
Total assets	312,397	295,632
Current liabilities:
Accounts payable	54,919	36,308
Notes payable	7,954	12,003
Current portion of long-term debt	10,570	5,000
Accrued and other current liabilities	23,960	19,959
Total current liabilities	97,403	73,270
Long-term debt, net of current portion	26,390	17,167
Other noncurrent liabilities	8,772	2,515
Total liabilities	132,565	92,952
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock, $0.0025 par value 10,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.0025 par value. At September 30, 2013: 100,000,000 shares authorized, 31,304,853 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	78	76
Additional paid-in capital	444,552	438,858
Accumulated other comprehensive income	13,172	11,829
Accumulated deficit	(277,970)	(248,083)
Total stockholders’ equity	179,832	202,680
Total liabilities and stockholders’ equity	$ 312,397	$ 295,632