Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 165,314,000	$ 74,685,000
Accumulated amortization	(57,906,000)	(52,351,000)
Net carrying amount	107,408,000	22,334,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	100,092,000	33,188,000
Accumulated amortization	(19,822,000)	(16,099,000)
Net carrying amount	80,270,000	17,089,000
Capitalized Purchased Software Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	29,754,000	29,329,000
Accumulated amortization	(27,394,000)	(26,628,000)
Net carrying amount	2,360,000	2,701,000
Technology Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	26,800,000	11,300,000
Accumulated amortization	(10,477,000)	(9,434,000)
Net carrying amount	16,323,000	1,866,000
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	7,800,000
Accumulated amortization	0
Net carrying amount	7,800,000
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	868,000	868,000
Accumulated amortization	(213,000)	(190,000)
Net carrying amount	$ 655,000	$ 678,000