Restructuring Activities (Restructuring Reserve Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Additions	$ 3,663		$ 2,250
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Accrued restructuring as of December 31, 2014	3,154
Additions	2,074
Cash payments	(1,904)
Accrued restructuring as of March 31, 2015	3,324
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Accrued restructuring as of December 31, 2014	1,401
Additions	1,399
Cash payments	(1,590)
Accrued restructuring as of March 31, 2015	1,210
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Accrued restructuring as of December 31, 2014	304
Additions	190
Cash payments	(75)
Adjustments	(1)	[1]
Accrued restructuring as of March 31, 2015	418
Total accrued restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Accrued restructuring as of December 31, 2014	4,859
Additions	3,663
Cash payments	(3,569)
Adjustments	(1)	[1]
Accrued restructuring as of March 31, 2015	$ 4,952

[1] Adjustments relate to a reversal of accrued expenses, differences resulting from the translation of the liability balance as of the balance sheet rate and restructuring expense translated at the weighted-average rate of exchange for the applicable period.