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Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Net sales	$ 827,810	$ 747,641	$ 2,348,955	$ 2,183,579
Percent change in Net Sales	0.107		0.076
Gross Profit	482,625	416,555	1,349,708	1,205,356
Percent change in Gross Profit	0.159		0.12
Operating profit	240,266	207,710	645,971	590,707
Percent change in Operating Profit	0.157		0.094
Long-Lived assets	140,021	136,000	140,021	136,000
Unallocated corporate general and administrative expenses	20,917	24,453	61,699	58,362
Industrial Technology
Segment Reporting Information [Line Items]
Net sales	200,684	199,008	580,466	598,088
Percent change in Net Sales	0.008		(0.029)
Gross Profit	101,259	102,569	296,414	304,002
Percent change in Gross Profit	(0.013)		(0.025)
Operating profit	60,753	60,628	164,278	180,211
Percent change in Operating Profit	0.002		(0.088)
Long-Lived assets	49,055	42,970	49,055	42,970
Energy Systems And Controls
Segment Reporting Information [Line Items]
Net sales	155,058	158,169	456,031	461,508
Percent change in Net Sales	(2)		(1.2)
Gross Profit	88,104	87,782	256,431	254,325
Percent change in Gross Profit	0.4		0.8
Operating profit	41,076	42,890	118,432	118,749
Percent change in Operating Profit	(4.2)		(0.3)
Long-Lived assets	19,501	19,016	19,501	19,016
Medical And Scientific Imaging
Segment Reporting Information [Line Items]
Net sales	237,338	172,475	645,739	486,207
Percent change in Net Sales	37.6		32.8
Gross Profit	167,433	112,013	440,718	314,411
Percent change in Gross Profit	49.5		40.2
Operating profit	71,968	46,190	179,433	125,231
Percent change in Operating Profit	55.8		43.3
Long-Lived assets	43,105	44,784	43,105	44,784
RF Technology
Segment Reporting Information [Line Items]
Net sales	234,730	217,989	666,719	637,776
Percent change in Net Sales	7.7		4.5
Gross Profit	125,829	114,191	356,145	332,618
Percent change in Gross Profit	10.2		7.1
Operating profit	66,469	58,002	183,828	166,516
Percent change in Operating Profit	14.6		10.4
Long-Lived assets	$ 28,360	$ 29,230	$ 28,360	$ 29,230

X

- Definition

The percent change in aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity, from the previous period to the current period.

+ References

No definition available.

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- Definition

The percent change in total revenue from sales of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances and sales discounts, from the previous period to the current period.

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- Definition

The percent change in the total amount of profit or loss for reportable segments, from the previous period to the current period.

+ References

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- Definition

Sum of the carrying amounts as of the balance sheet date of segment long-lived assets.

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- Definition

The net result for the period of deducting operating expenses from operating revenues before Corporate expenses.

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- Definition

The unallocated expenses reported by segment of managing and administering the affairs of an entity which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1,2)

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

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-Section 03

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