Condensed Consolidated Balance Sheets (Current Period Unaudited, Restated) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 246,895	$ 235,404
Short-term investments	8,344
Accounts receivable, less allowances	107,044	100,559
Inventories	71,372	75,580
Deferred income taxes	10,874	11,890
Prepaid expenses and other current assets	15,857	16,532
Assets held for sale	5,500	5,500
Total current assets	465,886	445,465
Property, plant and equipment:
Land	6,328	6,243
Buildings	55,159	54,559
Equipment	309,975	304,954
	371,462	365,756
Accumulated depreciation	(251,162)	(244,845)
Net property, plant and equipment	120,300	120,911
Intangible assets, net of amortization:
Patents, licenses and software	10,521	11,144
Distribution network	18,243	18,964
Customer lists, trademarks and tradenames	17,738	18,704
Goodwill	131,850	133,592
Investment in unconsolidated affiliate		8,666
Other investments	11,572	10,327
Deferred income taxes	9,826	8,090
Other assets	1,878	1,865
Total assets	787,814	777,728
Current liabilities:
Accounts payable	29,582	27,226
Accrued payroll	13,374	20,540
Accrued expenses	9,703	11,062
Accrued severance	776	1,033
Accrued income taxes	11,502	11,559
Current portion of long-term debt	94,000	84,000
Total current liabilities	158,937	155,420
Accrued post-retirement benefits	17,692	22,338
Other long-term liabilities	13,820	12,412
Total equity	597,365	587,558
Total liabilities and equity	$ 787,814	$ 777,728