Income Taxes (Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012
Income Tax Disclosure [Abstract]
Inventory	$ 4,472	$ 5,390
Accounts receivable	2,279	2,732
Capitalized research and development costs	22,986	21,173
Financing liability	9,168	7,627
Net operating loss and foreign tax credit carryforwards	101,396	99,207
Interest carryforward	6,691	6,017
Deferred revenue	988	1,321
Pension	13,221	13,558
Uncertain tax positions	11,190	8,876
Deferred compensation	2,871	3,630
Stock based compensation	8,756	7,506
Depreciation	1,851	1,753
Other	4,847	7,102
Valuation allowance	(145,508)	(141,474)
Deferred tax assets	45,208	44,418
Intangibles	10,756	8,327
Unremitted earnings	2,983	3,081
Deferred tax liabilities	13,739	11,408
Net deferred tax assets	$ 31,469	$ 33,010