CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 70,349	$ 62,827
Investments and marketable securities	455,644	350,380
Accounts receivable, net	165,426	176,917
Inventories, net	126,103	121,023
Deferred income taxes	19,810	19,810
Income tax receivable	8,860	7,622
Prepaid expenses and other current assets	13,055	15,524
Total current assets	859,247	754,103
Property and equipment at cost, less accumulated depreciation and amortization	107,115	109,588
Goodwill	155,800	155,800
Other intangibles, net	63,629	68,968
Other assets	33,178	31,353
Total assets	1,218,969	1,119,812
Current liabilities:
Accounts payable	31,752	34,688
Accrued liabilities	65,518	61,962
Deferred revenue	16,896	15,506
Income taxes payable	9,112	6,898
Total current liabilities	123,278	119,054
Long-term deferred tax liability	28,471	25,492
Deferred rent	1,484	1,131
Other long-term liabilities	17,674	15,477
Total liabilities	170,907	161,154
Stockholders' equity:
Class A Common Stock	722	722
Additional paid-in capital	149,475	143,295
Treasury stock	(666,084)	(678,456)
Retained earnings	1,572,041	1,502,878
Accumulated other comprehensive loss	(8,092)	(9,781)
Total stockholders' equity	1,048,062	958,658
Total liabilities and stockholders' equity	$ 1,218,969	$ 1,119,812