Consolidated Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 04, 2015	Mar. 29, 2014
Operating activities
Net earnings	$ 30,925us-gaap_ProfitLoss	$ 25,964us-gaap_ProfitLoss
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	45,410	43,355
(Gain) loss on disposal of property and equipment	(83)	(60)
Accretion of interest on convertible debentures	1,036	958
Inventory write-offs for obsolescence	4,854us-gaap_InventoryWriteDown	4,516us-gaap_InventoryWriteDown
Other	(7,080)us-gaap_OtherNoncashIncomeExpense	1,804us-gaap_OtherNoncashIncomeExpense
Net change in operating assets and liabilities, net of effects of businesses acquired	(61,564)	(46,583)
Net cash provided by operating activities	13,498	29,954
Investing activities
Capital expenditures	(19,782)	(19,347)
Proceeds from sale of property and equipment	719	1,197
Purchase of short-term investments	(78,905)	(28,423)
Maturity of short-term investments	17,414	50,400
Sale of short-term investments	503	0
Sale of other investments	400	0
Other investing activities	977	459
Net cash provided by (used in) investing activities	(78,674)	4,286
Financing activities
Principal payments on long-term debt and capital leases	0	(7)
Net proceeds (payments) on revolving credit lines	15,000	(4,000)
Net changes in short-term borrowings	(6)	20
Excess tax benefit from RSUs vested	21	0
Distributions to noncontrolling interests	0	(300)
Net cash provided by (used in) financing activities	6,161	(13,134)
Effect of exchange rate changes on cash and cash equivalents	(16,155)	3
Net increase (decrease) in cash and cash equivalents	(75,170)	21,109
Cash and cash equivalents at beginning of period	592,172	640,348
Cash and cash equivalents at end of period	517,002	661,457
Common Stock [Member]
Financing activities
Dividends and Interest Paid	(8,126)	(8,119)
Class B Convertible Common Stock [Member]
Financing activities
Dividends and Interest Paid	$ (728)	$ (728)

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-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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