CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 110,194	$ 101,322
Short-term available-for-sale investments	150,506	148,426
Receivables, net of allowances of $2,289 and $2,127, respectively	67,950	70,471
Inventories	64,972	47,100
Deferred tax assets	10,626	10,626
Income tax receivable	13,798	11,950
Prepaid expenses and other assets	7,784	7,162
Total current assets	425,830	397,057
Property, plant and equipment, net	47,450	45,892
Goodwill	192,285	194,182
Purchased intangible assets, net	28,284	33,571
Long-term available-for-sale investments	10,155	10,607
Other long-term assets	28,875	17,055
Total Assets	732,879	698,364
Current liabilities:
Accounts payable	18,576	19,959
Accrued compensation	17,490	25,409
Contingent liabilities, current portion	6,138	4,220
Other accrued liabilities	15,004	19,098
Total current liabilities	57,208	68,686
Long-term deferred tax liability	1,241	2,780
Other long-term liabilities	12,889	12,323
Contingent liabilities, non-current portion	11,694	17,832
Total Liabilities	83,032	101,621
Shareholders' equity:
Common shares: no par, authorized 100,000; issued and outstanding 57,514 and 57,584 as of June 29, 2013 and December 29, 2012, respectively
Additional paid-in capital	607,370	577,448
Retained earnings	59,229	34,364
Accumulated other comprehensive loss:
Unrealized loss on investments	(1,148)	(1,141)
Cumulative translation adjustments	(15,604)	(13,928)
Total accumulated other comprehensive loss	(16,752)	(15,069)
Total Shareholders' Equity	649,847	596,743
Total Liabilities and Shareholders' Equity	$ 732,879	$ 698,364