Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 132,468	$ 141,423
Short-term marketable securities	52,012	68,711
Accounts receivable, net	60,380	36,993
Inventories	37,116	37,278
Prepaid expenses and other current assets	16,005	16,200
Total current assets	297,981	300,605
Property and equipment, less accumulated depreciation	42,064	40,430
Long-term marketable securities	4,661	6,946
Other long-term assets	8,510	11,628
Intangible assets, net of amortization	16,904	18,377
Goodwill	44,808	44,808
Deferred income taxes	29,087	45,130
Total assets	444,015	467,924
Current liabilities:
Accounts payable and accrued expenses	31,719	31,842
Accrued payroll obligations	7,244	9,373
Deferred income and allowances on sales to sell-through distributors	12,356	10,761
Total current liabilities	51,319	51,976
Long-term liabilities	20,497	22,387
Total liabilities	71,816	74,363
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $.01 par value, 300,000,000 shares authorized, 117,358,000 and 117,675,000 shares issued and outstanding	1,174	1,177
Paid-in capital	626,375	627,637
Accumulated other comprehensive loss	(186)	(345)
Accumulated deficit	(255,164)	(234,908)
Total stockholders' equity	372,199	393,561
Total liabilities and stockholders' equity	$ 444,015	$ 467,924