Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 105,426	$ 94,964
Short-term investments	176,565	212,526
Accounts receivable, net of allowances for doubtful accounts of $670 at December 29, 2012 and $725 at December 31, 2011	78,023	55,351
Inventories	49,579	34,778
Deferred income taxes	16,652	11,563
Prepaid expenses and other current assets	41,437	43,867
Total current assets	467,682	453,049
Long-term investments	11,369	17,477
Property and equipment, net	135,271	25,141
Goodwill	130,265	115,489
Other intangible assets, net	90,750	60,005
Other assets, net	36,629	34,830
Total assets	871,966	705,991
Current liabilities:
Accounts payable	29,622	26,354
Current portion of long-term debt	5,000
Accrued expenses	40,410	30,857
Deferred income on shipments to distributors	30,259	24,962
Income taxes	1,087	665
Total current liabilities	106,378	82,838
Long-term debt	95,000
Other non-current liabilities	20,615	24,214
Total liabilities	221,993	107,052
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; 41,879 and 42,068 shares issued and outstanding at December 29, 2012 and December 31, 2011, respectively	4	4
Additional paid-in capital	10,122	14,749
Retained earnings	640,793	586,653
Accumulated other comprehensive loss	(946)	(2,467)
Total stockholders' equity	649,973	598,939
Total liabilities and stockholders' equity	$ 871,966	$ 705,991