Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 41,943	$ 36,418
Investments and marketable securities	175,169	182,398
Accounts receivable, net	157,114	155,230
Receivable from buyer	13,790	27,580
Inventories, net	126,119	133,288
Deferred income taxes	14,194	13,931
Income tax receivable	6,917	13,111
Prepaid expenses and other current assets	15,036	22,917
Total current assets	550,282	584,873
Property and equipment at cost, less accumulated depreciation and amortization	101,985	97,822
Long-term deferred income taxes	11,995	11,866
Goodwill	79,703	79,703
Other intangibles, net	11,897	12,667
Long-term investments and marketable securities	145,132	107,879
Other assets	4,092	4,196
Total assets	905,086	899,006
Current liabilities:
Accounts payable	33,019	33,273
Accrued liabilities	47,769	64,612
Deferred revenue	12,065	11,089
Total current liabilities	92,853	108,974
Deferred rent	1,496	1,592
Other long-term liabilities	11,674	11,515
Total liabilities	106,023	122,081
Stockholders' equity:
Preferred Stock	0	0
Class A Common Stock	722	722
Additional paid-in capital	134,472	131,422
Treasury stock	(603,705)	(596,622)
Retained earnings	1,275,780	1,245,616
Accumulated other comprehensive loss	(8,206)	(4,213)
Total stockholders' equity	799,063	776,925
Total liabilities and stockholders' equity	$ 905,086	$ 899,006