Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014
Operating activities
Net earnings	$ 57,443	$ 61,796
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	90,185	86,931
(Gain) loss on disposal of property and equipment	(115)	23
Accretion of interest on convertible debentures	2,090	1,933
Inventory write-offs for obsolescence	9,329	9,867
Other	(10,924)	1,312
Net change in operating assets and liabilities, net of effects of businesses acquired	(55,646)	(62,789)
Net cash provided by operating activities	92,362	99,073
Investing activities
Capital expenditures	(49,550)	(53,336)
Proceeds from sale of property and equipment	1,675	1,741
Purchase of businesses, net of cash acquired	0	(20,776)
Purchase of short-term investments	(185,583)	(243,975)
Maturity of short-term investments	91,953	236,624
Sale of other investments	400	0
Other investing activities	1,274	927
Net cash provided by (used in) investing activities	(139,831)	(78,795)
Financing activities
Principal payments on long-term debt and capital leases	0	(11)
Net proceeds (payments) on revolving credit lines	(30,000)	20,000
Net changes in short-term borrowings	(1)	16
Excess tax benefit from RSUs vested	21	0
Distributions to noncontrolling interests	(725)	(547)
Net cash provided by (used in) financing activities	(48,413)	1,764
Effect of exchange rate changes on cash and cash equivalents	(13,270)	(2,797)
Net increase (decrease) in cash and cash equivalents	(109,152)	19,245
Cash and cash equivalents at beginning of period	592,172	640,348
Cash and cash equivalents at end of period	483,020	659,593
Common Stock [Member]
Financing activities
Dividends and Interest Paid	(16,252)	(16,238)
Class B Convertible Common Stock [Member]
Financing activities
Dividends and Interest Paid	$ (1,456)	$ (1,456)