Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 46,877	$ 45,743
Accounts receivable, net	35,071	57,888
Inventories, net	120,023	109,653
Prepaid expenses and other current assets	10,062	15,346
Total current assets	212,033	228,630
Property, plant and equipment, net	37,204	38,594
Long-term restricted cash	104	107
Other assets	19,904	13,541
TOTAL ASSETS	269,245	280,872
Current liabilities
Accounts payable	19,551	36,709
Accrued compensation	8,285	10,597
Warranty	3,556	2,556
Income taxes	495
Deferred revenue	10,786	13,859
Other current liabilities	4,799	4,408
Total current liabilities	47,472	68,129
Long-term deferred revenue	1,488	2,417
Other long-term liabilities	5,730	4,759
Commitments and contingencies (Note 14)
Stockholders' equity
Preferred stock, $0.001 par value, 30,000 shares authorized; none issued or outstanding
Common stock, $0.001 par value, 300,000 shares authorized; 106,809 shares issued and 106,689 shares outstanding at December 31, 2011; 105,906 shares issued and 105,786 shares outstanding at December 31, 2010	107	106
Additional paid-in capital	499,332	493,967
Treasury stock, at cost, 120 shares at December 31, 2011 and 2010	(1,218)	(1,218)
Accumulated deficit	(288,443)	(293,520)
Accumulated other comprehensive income	4,777	6,232
Total Stockholders' equity	214,555	205,567
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 269,245	$ 280,872