Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 95,800	$ 105,426
Short-term investments	179,593	176,565
Accounts receivable, net of allowances for doubtful accounts of $797 at December 28, 2013 and $670 at December 29, 2012	72,124	78,023
Inventories	45,271	49,579
Deferred income taxes	18,878	16,652
Prepaid expenses and other current assets	47,651	41,437
Total current assets	459,317	467,682
Long-term investments	10,632	11,369
Property and equipment, net	132,445	135,271
Goodwill	228,781	130,265
Other intangible assets, net	131,593	90,750
Other assets, net	28,382	36,629
Total assets	991,150	871,966
Current liabilities:
Accounts payable	22,126	29,622
Current portion of long-term debt	7,500	5,000
Accrued expenses	45,975	40,410
Deferred income on shipments to distributors	30,853	30,259
Income taxes	2,693	1,087
Total current liabilities	109,147	106,378
Long-term debt	87,500	95,000
Other non-current liabilities	55,941	20,615
Total liabilities	252,588	221,993
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; 42,779 and 41,879 shares issued and outstanding at December 28, 2013 and December 29, 2012, respectively	4	4
Additional paid-in capital	48,630	10,122
Retained earnings	690,612	640,793
Accumulated other comprehensive loss	(684)	(946)
Total stockholders' equity	738,562	649,973
Total liabilities and stockholders' equity	$ 991,150	$ 871,966