Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified						9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2014 Customer Relationships	Dec. 31, 2013 Customer Relationships	Sep. 30, 2014 Customer Relationships Minimum	Dec. 31, 2013 Customer Relationships Minimum	Sep. 30, 2014 Customer Relationships Maximum	Dec. 31, 2013 Customer Relationships Maximum	Sep. 30, 2014 Patents	Dec. 31, 2013 Patents	Sep. 30, 2014 Patents Minimum	Dec. 31, 2013 Patents Minimum	Sep. 30, 2014 Patents Maximum	Dec. 31, 2013 Patents Maximum	Sep. 30, 2014 Tradenames	Dec. 31, 2013 Tradenames	Sep. 30, 2014 Tradenames Minimum	Dec. 31, 2013 Tradenames Minimum	Sep. 30, 2014 Tradenames Maximum	Dec. 31, 2013 Tradenames Maximum	Sep. 30, 2014 Non-compete Agreements	Dec. 31, 2013 Non-compete Agreements	Sep. 30, 2014 Non-compete Agreements Minimum	Dec. 31, 2013 Non-compete Agreements Minimum	Sep. 30, 2014 Non-compete Agreements Maximum	Dec. 31, 2013 Non-compete Agreements Maximum	Sep. 30, 2014 Other	Sep. 30, 2014 Other Minimum	Sep. 30, 2014 Other Maximum
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross				$ 81,261	$ 50,105					$ 52,167	$ 41,651					$ 9,473	$ 7,959					$ 3,948	$ 3,866					$ 360
Finite-Lived Intangible Assets, Accumulated Amortization	53,121	48,646		25,825	21,999					20,936	18,461					4,237	5,976					2,051	2,210					72
Finite-Lived Intangible Assets, Net				55,436	28,106					31,231	23,190					5,236	1,983					1,897	1,656					288
Indefinite-Lived Intangible Assets - Purchased research and development	6,697	4,457
Intangible Assets, Gross (Excluding Goodwill)	153,906	108,038
Intangible Assets, Net (Excluding Goodwill)	$ 100,785	$ 59,392	$ 61,861
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