Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings [Member]	Treasury Stock [Member]	Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2008	$ 2,003,934	$ 919	$ 815,736	$ 1,187,467	$ 21,513	$ (21,701)	$ 194,655
Beginning Balance - Shares at Dec. 31, 2008		89,721,000
Net earnings	239,481			239,481			239,481
Stock option exercises	10,506	4	10,502
Stock option exercises - shares		421,000
Treasury stock sold	1,693		1,312			381
Treasury stock sold - shares		38,000
Currency translation adjustments, net of tax	42,432				42,432		42,432
Stock based compensation	26,660			26,660
Restricted stock grants	(3,647)	1	(3,648)
Restricted stock grants - shares		87,000
Stock option tax benefit	2,032		2,032
Dividends declared	(31,362)			(31,362)
Issuance of common stock	121,450	23	121,427
Issuance of common stock, shares		2,300,000
Conversion of senior subordinated convertible notes	8,311	11	8,300
Conversion of senior subordinated convertible notes, shares		1,051,000
Ending Balance at Dec. 31, 2009	2,421,490	958	982,321	1,395,586	63,945	(21,320)	281,913
Ending Balance - shares at Dec. 31, 2009		93,618,000
Stock issued for Lumenera contingent consideration	5,591		4,740			851
Net earnings	322,580			322,580			322,580
Stock option exercises	29,047	8	29,039
Stock option exercises - shares		864,000
Treasury stock sold	1,697		1,405			292
Treasury stock sold - shares		29,000
Currency translation adjustments, net of tax	(19,967)				(19,967)		(19,967)
Stock based compensation	23,980		23,980
Restricted stock grants	(4,545)	2	(4,547)
Restricted stock grants - shares		165,000
Stock option tax benefit	7,282		7,282
Dividends declared	(37,317)			(37,317)
Conversion of senior subordinated convertible notes	1,069	3	1,066
Conversion of senior subordinated convertible notes, shares		326,000
Ending Balance at Dec. 31, 2010	$ 2,750,907
Ending Balance - shares at Dec. 31, 2010	95,088,000