Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 37,857	$ 45,743
Accounts receivable, net	57,969	57,888
Inventories, net	124,273	109,653
Prepaid expenses and other current assets	11,177	15,346
Total current assets	231,276	228,630
Property, plant and equipment, net	38,106	38,594
Long-term restricted cash	116	107
Other assets	17,914	13,541
TOTAL ASSETS	287,412	280,872
Current liabilities
Accounts payable	30,904	36,709
Accrued compensation	11,399	10,597
Warranty	4,131	2,556
Income taxes	650
Deferred revenue	10,933	13,859
Other current liabilities	4,518	4,408
Total current liabilities	62,535	68,129
Long-term deferred revenue	2,374	2,417
Other long-term liabilities	5,317	4,759
Commitments and contingencies (Note 10)
Stockholders' equity
Preferred stock
Common stock	106	106
Additional paid-in capital	496,583	493,967
Treasury stock	(1,218)	(1,218)
Accumulated deficit	(287,481)	(293,520)
Accumulated other comprehensive income	9,196	6,232
Total Stockholders' equity	217,186	205,567
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 287,412	$ 280,872