Goodwill And Intangible Assets (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2012

Dec. 31, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Changes In Carrying Amounts Of Goodwill

The changes in carrying amounts of goodwill for the six months ended June 30, 2012 are as follows (in thousands):

Balance as of January 1, 2012	$	279,016
Goodwill acquired	10,944
Purchase Accounting Adjustments	(301		)
Foreign exchange translation	(400		)
Balance as of June 30, 2012	$	289,259

Schedule Of Intangible Assets With Indefinite Lives

Intangible assets with indefinite lives:

	June 30, 2012		December 31, 2011
Tradename	$	27,382	$	28,254
Other	5,418		5,317
Total	$	32,800	$	33,571

Finite-Lived Intangible Assets By Major Class

As of June 30, 2012, intangible assets subject to amortization relate primarily to the following (in thousands):

	Weighted-Average Amortization Period	Historical Cost		Accumulated Amortization			Net
Tradenames	11.2 years	$	12,165	$	(5,053	)	$	7,112
Patent and patent licenses	8.4 years	40,631		(22,564		)	18,067
Customer relationships	6.6 years	57,199		(17,154		)	40,045
Other purchased intangibles	4.7 years	11,697		(7,809		)	3,888
Total		$	121,692	$	(52,580	)	$	69,112

As of December 31, 2011, intangible assets subject to amortization relate primarily to the following (in thousands):

	Weighted-Average Amortization Period	Historical Cost		Accumulated Amortization			Net
Tradenames	12.6 years	$	10,584	$	(4,147	)	$	6,437
Patent and patent licenses	8.4 years	38,229		(20,712		)	17,517
Customer relationships	6.7 years	49,245		(13,380		)	35,865
Other purchased intangibles	4.7 years	11,545		(6,868		)	4,677
Total		$	109,603	$	(45,107	)	$	64,496