Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 74,305	$ 58,780	[1]
Short-term investments	206,571	169,167	[1]
Accounts receivable, net	50,326	56,506	[1]
Inventories, net	47,746	41,285	[1]
Prepaid expenses and other current assets	6,556	6,848	[1]
Total current assets	385,504	332,586	[1]
Property, plant, and equipment, net	18,806	16,009	[1]
Intangibles assets, net	8,171	452	[1]
Other assets	5,158	4,401	[1]
Total assets	417,639	353,448	[1]
Current liabilities:
Notes payable	1,000	1,000	[1]
Accounts payable	15,529	10,980	[1]
Deferred product and services income	21,667	14,953	[1]
Other current liabilities	15,795	22,373	[1]
Total current liabilities	53,991	49,306	[1]
Other liabilities	14,324	8,113	[1]
Stockholders' Equity:
Stockholders' equity	349,324	296,029	[1]
Total liabilities and stockholders' equity	$ 417,639	$ 353,448	[1]

[1] The Balance Sheet as of December 31, 2011 has been derived from the audited financial statements at that date.