CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 64,196	$ 64,740
Investments and marketable securities	399,541	324,140
Accounts receivable, net	175,639	168,732
Inventories, net	106,628	123,357
Deferred income taxes	13,434	13,484
Income taxes receivable	5,604	0
Prepaid expenses and other current assets	14,421	16,410
Total current assets	779,463	710,863
Property and equipment at cost, less accumulated depreciation and amortization	100,515	101,349
Long-term deferred income taxes	0	2,602
Goodwill	94,942	94,942
Other intangibles, net	33,594	39,151
Long-term investments and marketable securities	2,588	5,195
Other assets	16,536	13,646
Total assets	1,027,638	967,748
Current liabilities:
Accounts payable	26,675	23,045
Accrued liabilities	49,448	57,234
Deferred revenue	15,104	13,326
Income taxes payable	7,346	1,609
Total current liabilities	98,573	95,214
Long-term deferred tax liability	2,236	0
Deferred rent	1,256	1,303
Other long-term liabilities	15,230	14,229
Total liabilities	117,295	110,746
Stockholders' equity:
Preferred Stock	0	0
Class A Common Stock	722	722
Additional paid-in capital	139,768	139,523
Treasury stock	(681,388)	(641,438)
Retained earnings	1,461,228	1,368,520
Accumulated other comprehensive loss	(9,987)	(10,325)
Total stockholders' equity	910,343	857,002
Total liabilities and stockholders' equity	$ 1,027,638	$ 967,748