Consolidated Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Operating activities
Net earnings	$ 25,964	$ 29,141
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	43,355	41,346
(Gain) loss on disposal of property and equipment	(60)	137
Accretion of interest on convertible debentures	958	886
Inventory write-offs for obsolescence	4,516	4,213
Other	1,804	2,337
Net change in operating assets and liabilities, net of effects of businesses acquired	(46,583)	(54,669)
Net cash provided by operating activities	29,954	23,391
Investing activities
Capital expenditures	(19,347)	(20,181)
Proceeds from sale of property and equipment	1,197	769
Purchase of short-term investments	(28,423)	(242,501)
Maturity of short-term investments	50,400	181,631
Other investing activities	459	627
Net cash provided by (used in) investing activities	4,286	(79,655)
Financing activities
Principal payments on long-term debt and capital leases	(7)	(8)
Net proceeds (payments) on revolving credit lines	(4,000)	1,000
Net changes in short-term borrowings	20	14
Excess tax benefit from RSUs vested	0	436
Distributions to noncontrolling interests	(300)	0
Net cash provided by (used in) financing activities	(13,134)	1,442
Effect of exchange rate changes on cash and cash equivalents	3	(9,993)
Net increase (decrease) in cash and cash equivalents	21,109	(64,815)
Cash and cash equivalents at beginning of period	640,348	697,595
Cash and cash equivalents at end of period	661,457	632,780
Common Stock [Member]
Financing activities
Dividends and Interest Paid	(8,119)	0
Class B Convertible Common Stock [Member]
Financing activities
Dividends and Interest Paid	$ (728)	$ 0