Restructuring Charges (Schedule Of Accrued Restructuring Balances) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	$ 717
Restructuring charges	6,746
Cash Payment	(3,372)
Non-Cash Activity	(1,010)
Foreign Exchange Adjustments	(22)
Restructuring Reserve, Ending Balance	3,059
2013 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	0
Restructuring charges	5,286
Cash Payment	(2,110)
Non-Cash Activity	(971)
Foreign Exchange Adjustments	(25)
Restructuring Reserve, Ending Balance	2,180
2013 [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	0
Restructuring charges	2,349
Cash Payment	(1,233)
Non-Cash Activity	0
Foreign Exchange Adjustments	(77)
Restructuring Reserve, Ending Balance	1,039
2013 [Member] | Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	0
Restructuring charges	2,937
Cash Payment	(877)
Non-Cash Activity	(971)
Foreign Exchange Adjustments	52
Restructuring Reserve, Ending Balance	1,141
2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	704
Restructuring charges	1,558
Cash Payment	(1,349)
Non-Cash Activity	(39)
Foreign Exchange Adjustments	1
Restructuring Reserve, Ending Balance	875
2012 [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	538
Restructuring charges	724
Cash Payment	(1,062)
Non-Cash Activity	0
Foreign Exchange Adjustments	94
Restructuring Reserve, Ending Balance	294
2012 [Member] | Lease Facility Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	0
Restructuring charges	834
Cash Payment	(217)
Non-Cash Activity	(39)
Foreign Exchange Adjustments	0
Restructuring Reserve, Ending Balance	578
2012 [Member] | Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	166
Restructuring charges	0
Cash Payment	(70)
Non-Cash Activity	0
Foreign Exchange Adjustments	(93)
Restructuring Reserve, Ending Balance	3
2011 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	13
Restructuring charges	(98)
Cash Payment	87
Non-Cash Activity	0
Foreign Exchange Adjustments	2
Restructuring Reserve, Ending Balance	4
2011 [Member] | Lease Facility Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	13
Restructuring charges	(98)
Cash Payment	87
Non-Cash Activity	0
Foreign Exchange Adjustments	2
Restructuring Reserve, Ending Balance	$ 4