Restructuring - Restructuring Plan Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 658	$ 0
Restructuring Plan 2014 [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	14,426
Restructuring charges	3,538
Foreign Currency Translation	(105)
Utilized - Cash	1,520
Utilized - Non-Cash	2,448
Reserves at March 31, 2015	13,891
Restructuring Plan 2014 [Member] | Severance and benefit costs [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	466
Restructuring charges	516
Foreign Currency Translation	(2)
Utilized - Cash	82
Utilized - Non-Cash	0
Reserves at March 31, 2015	898
Restructuring Plan 2014 [Member] | Lease termination costs [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	0
Restructuring charges	141
Foreign Currency Translation	0
Utilized - Cash	141
Utilized - Non-Cash	0
Reserves at March 31, 2015	0
Restructuring Plan 2014 [Member] | Bad debt expense [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	11,464
Restructuring charges	(999)
Foreign Currency Translation	(1)
Utilized - Cash	0
Utilized - Non-Cash	(124)
Reserves at March 31, 2015	10,588
Restructuring Plan 2014 [Member] | Currency tranlation [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	0
Restructuring charges	409
Foreign Currency Translation	0
Utilized - Cash	0
Utilized - Non-Cash	409
Reserves at March 31, 2015	0
Restructuring Plan 2014 [Member] | Other restructuring costs [Member]
Restructuring Reserve [Roll Forward]
Reserves at December 31, 2014	2,496
Restructuring charges	3,471
Foreign Currency Translation	(102)
Utilized - Cash	1,297
Utilized - Non-Cash	2,163
Reserves at March 31, 2015	$ 2,405