CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 102,843	$ 101,322
Short-term available-for-sale investments	176,005	148,426
Receivables, net of allowances of $1,962 and $2,127, respectively	66,990	70,471
Inventories	66,164	47,100
Deferred tax assets	11,115	10,626
Income tax receivable	9,014	11,950
Prepaid expenses and other assets	6,271	7,162
Total current assets	438,402	397,057
Property, plant and equipment, net	54,707	45,892
Goodwill	204,293	194,182
Purchased intangible assets, net	38,882	33,571
Long-term available-for-sale investments	4,160	10,607
Other long-term assets	18,354	17,055
Total Assets	758,798	698,364
Current liabilities:
Accounts payable	19,322	19,959
Accrued compensation	22,802	25,409
Contingent liabilities, current portion	7,407	4,220
Other accrued liabilities	21,847	19,098
Total current liabilities	71,378	68,686
Long-term deferred tax liability	1,761	2,780
Other long-term liabilities	10,071	12,323
Contingent liabilities, non-current portion	33,138	17,832
Total Liabilities	116,348	101,621
Shareholders' equity:
Common shares: no par, authorized 100,000; issued and outstanding 56,871 and 57,584 as of September 28, 2013 and December 29, 2012, respectively
Additional paid-in capital	598,402	577,448
Retained earnings	57,726	34,364
Accumulated other comprehensive loss	(13,678)	(15,069)
Total Shareholders' Equity	642,450	596,743
Total Liabilities and Shareholders' Equity	$ 758,798	$ 698,364