Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified						6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014 Customer Relationships	Dec. 31, 2013 Customer Relationships	Jun. 30, 2014 Customer Relationships Minimum	Dec. 31, 2013 Customer Relationships Minimum	Jun. 30, 2014 Customer Relationships Maximum	Dec. 31, 2013 Customer Relationships Maximum	Jun. 30, 2014 Patents	Dec. 31, 2013 Patents	Jun. 30, 2014 Patents Minimum	Dec. 31, 2013 Patents Minimum	Jun. 30, 2014 Patents Maximum	Dec. 31, 2013 Patents Maximum	Jun. 30, 2014 Tradenames	Dec. 31, 2013 Tradenames	Jun. 30, 2014 Tradenames Minimum	Dec. 31, 2013 Tradenames Minimum	Jun. 30, 2014 Tradenames Maximum	Dec. 31, 2013 Tradenames Maximum	Jun. 30, 2014 Non-compete Agreements	Dec. 31, 2013 Non-compete Agreements	Jun. 30, 2014 Non-compete Agreements Minimum	Dec. 31, 2013 Non-compete Agreements Minimum	Jun. 30, 2014 Non-compete Agreements Maximum	Dec. 31, 2013 Non-compete Agreements Maximum	Jun. 30, 2014 Other	Jun. 30, 2014 Other Minimum	Jun. 30, 2014 Other Maximum
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross				$ 70,761	$ 50,105					$ 52,150	$ 41,651					$ 8,273	$ 7,959					$ 3,918	$ 3,866					$ 360
Finite-Lived Intangible Assets, Accumulated Amortization	49,505	48,646		24,094	21,999					19,544	18,461					3,955	5,976					1,869	2,210					43
Finite-Lived Intangible Assets, Net				46,667	28,106					32,606	23,190					4,318	1,983					2,049	1,656					317
Indefinite-Lived Intangible Assets - Purchased research and development	6,697	4,457
Intangible Assets, Gross (Excluding Goodwill)	142,159	108,038
Intangible Assets, Net (Excluding Goodwill)	$ 92,654	$ 59,392	$ 64,307
Estimated useful life in years						6 years	6 years	16 years	16 years			3 years	3 years	19 years	19 years			3 years	5 years	15 years	15 years			3 years	3 years	6 years	6 years		2 years	12 years