Condensed Consolidated Balance Sheets (USD $) In Thousands	Oct. 01, 2011	Jan. 01, 2011
Current assets:
Cash and cash equivalents	$ 108,183	$ 138,567
Short-term investments	174,915	227,295
Accounts receivable, net of allowance for doubtful accounts of $733 at October 1, 2011 and $772 at January 1, 2011	58,370	45,030
Inventories	38,403	39,450
Deferred income taxes	10,617	9,140
Prepaid expenses and other current assets	36,280	34,447
Total current assets	426,768	493,929
Long-term investments	17,840	17,500
Property and equipment, net	27,373	29,945
Goodwill	115,489	112,296
Other intangible assets, net	63,787	53,242
Other assets, net	26,088	20,746
Total assets	677,345	727,658
Current liabilities:
Accounts payable	25,720	24,433
Accrued expenses	31,842	25,604
Deferred income on shipments to distributors	28,372	26,127
Income taxes	809	3,692
Total current liabilities	86,743	79,856
Long-term obligations and other liabilities	19,280	22,372
Total liabilities	106,023	102,228
Commitments and contingencies
Stockholders' equity:
Preferred stock--$0.0001 par value; 10,000 shares authorized; no shares issued and outstanding
Common stock--$0.0001 par value; 250,000 shares authorized; 41,839 and 43,933 shares issued and outstanding at October 1, 2011 and January 1, 2011, respectively	4	4
Additional paid-in capital		49,947
Retained earnings	573,848	579,127
Accumulated other comprehensive loss	(2,530)	(3,648)
Total stockholders' equity	571,322	625,430
Total liabilities and stockholders' equity	$ 677,345	$ 727,658