Goodwill And Intangible Assets (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Changes In Carrying Amounts Of Goodwill

The changes in carrying amounts of goodwill for the three months ended March 31, 2013 are as follows (in thousands):

Balance as of January 1, 2013	$	407,825
Goodwill acquired (Note 3)	21,961
Purchase accounting adjustments	147
Foreign exchange translation	(640		)
Balance as of March 31, 2013	$	429,293

Schedule Of Intangible Assets With Indefinite Lives

Intangible Assets with Indefinite Lives:

	March 31, 2013		December 31, 2012
Trade name	$	27,379	$	27,379
Other	5,433		5,433
Total	$	32,812	$	32,812

Finite-Lived Intangible Assets By Major Class

As of March 31, 2013, intangible assets subject to amortization relate primarily to the following (in thousands):

	Weighted-Average Amortization Period	Historical Cost		Accumulated Amortization			Net
Tradenames	17.0 years	$	65,003	$	(7,322	)	$	57,681
Patent and patent licenses	8.2 years	44,436		(25,896		)	18,540
Customer relationships	7.1 years	105,604		(24,843		)	80,761
Other purchased intangibles	4.0 years	15,867		(10,016		)	5,851
Total		$	230,910	$	(68,077	)	$	162,833

As of December 31, 2012, intangible assets subject to amortization relate primarily to the following (in thousands):

	Weighted-Average Amortization Period	Historical Cost		Accumulated Amortization			Net
Tradenames	17.7 years	$	50,257	$	(6,227	)	$	44,030
Patent and patent licenses	8.2 years	44,048		(24,719		)	19,329
Customer relationships	7.0 years	86,473		(21,750		)	64,723
Other purchased intangibles	4.4 years	13,322		(8,900		)	4,422
Total		$	194,100	$	(61,596	)	$	132,504