Consolidated Balance Sheets(USD ($))	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 36,353,000	$ 46,175,000
Restricted cash	65,000	1,378,000
Investments and marketable securities	182,398,000	125,567,000
Accounts receivable, net	155,230,000	130,143,000
Receivable from buyer	27,580,000	0
Inventories, net	133,288,000	112,970,000
Deferred income taxes	13,931,000	15,670,000
Income tax receivable	13,111,000	0
Prepaid expenses and other current assets	22,917,000	11,505,000
Assets of discontinued operations	0	148,169,000
Total current assets	584,873,000	591,577,000
Property and equipment at cost, less accumulated depreciation and amortization	97,822,000	87,093,000
Long-term deferred income taxes	11,866,000	21,254,000
Goodwill	79,703,000	79,703,000
Other intangibles, net	12,667,000	9,755,000
Long-term investments and marketable securities	107,879,000	85,478,000
Other assets	4,196,000	4,004,000
Total assets	899,006,000	878,864,000
Current liabilities:
Accounts payable	33,273,000	34,578,000
Accrued liabilities	64,612,000	65,163,000
Deferred revenue	11,089,000	8,966,000
Income taxes payable	0	5,900,000
Liabilities of discontinued operations	0	21,827,000
Total current liabilities	108,974,000	136,434,000
Deferred rent	1,592,000	2,207,000
Other long-term liabilities	11,515,000	10,191,000
Total liabilities	122,081,000	148,832,000
Stockholders' equity:
Preferred Stock	0	0
Class A Common Stock	722,000	722,000
Additional paid-in capital	131,422,000	129,715,000
Treasury stock	(596,622,000)	(462,029,000)
Retained earnings	1,245,616,000	1,070,973,000
Accumulated other comprehensive loss	(4,213,000)	(9,349,000)
Total stockholders' equity	776,925,000	730,032,000
Total liabilities and stockholders' equity	$ 899,006,000	$ 878,864,000