Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 79,389	$ 93,550	[1]
Short-term investments	211,184	203,485	[1]
Accounts receivable, net	31,479	34,441	[1]
Inventories, net	47,809	47,784	[1]
Prepaid expenses and other current assets	5,599	5,498	[1]
Total current assets	375,460	384,758	[1]
Property, plant, and equipment, net	21,272	21,811	[1]
Intangible assets, net	15,298	15,735	[1]
Other assets	12,583	11,860	[1]
Total assets	424,613	434,164	[1]
Current liabilities:
Notes payable	5,120	5,120	[1]
Accounts payable	8,528	8,914	[1]
Deferred product and services income	6,308	6,574	[1]
Other current liabilities	11,504	15,095	[1]
Total current liabilities	31,460	35,703	[1]
Other liabilities	11,973	11,923	[1]
Stockholders’ equity	381,180	386,538	[1]
Total liabilities and stockholders’ equity	$ 424,613	$ 434,164	[1]

[1] The balance sheet as of December 31, 2013 has been derived from the audited financial statements at that date.