Restructuring - Restructuring Plan Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		21 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 212	$ 172	$ 8,544	$ 1,034
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,287		14,791
Restructuring Reserve [Roll Forward]
Charge (Credit) to Income	1,287		14,791
Utilized - Cash			12,922
Utilized - Non-Cash			765
Ending balance	1,104		1,104
Restructuring Plan 2016 | Severance and benefit related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	146		6,939
Restructuring Reserve [Roll Forward]
Utilized - Cash			5,835
Utilized - Non-Cash			0
Ending balance	1,104		1,104
Restructuring Plan 2016 | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			969
Restructuring Reserve [Roll Forward]
Utilized - Cash			969
Utilized - Non-Cash			0
Ending balance	0		0
Restructuring Plan 2016 | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	66		569
Restructuring Reserve [Roll Forward]
Utilized - Cash			569
Utilized - Non-Cash			0
Ending balance	0		0
Restructuring Plan 2016 | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,075		6,314
Restructuring Reserve [Roll Forward]
Utilized - Cash			5,549
Utilized - Non-Cash			765
Ending balance	0		0
Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(400)	1,500	(500)	10,700
Restructuring Reserve [Roll Forward]
Beginning balance			7,573	14,426
Charge (Credit) to Income	(363)	1,498	(483)	10,730	$ 60,000
Foreign Currency Translation			69	(397)
Utilized - Cash			214	5,416	11,700
Utilized - Non-Cash			4,046	8,695	$ 48,300
Ending balance	2,899	10,648	2,899	10,648
Restructuring Plan 2014 | Severance and benefit related costs
Restructuring Reserve [Roll Forward]
Beginning balance			0	466
Charge (Credit) to Income	0	172	67	866
Foreign Currency Translation			0	(7)
Utilized - Cash			0	1,205
Utilized - Non-Cash			0	0
Ending balance	67	120	67	120
Restructuring Plan 2014 | Lease termination costs
Restructuring Reserve [Roll Forward]
Beginning balance				0
Charge (Credit) to Income	0	0	0	168
Foreign Currency Translation				(2)
Utilized - Cash				166
Utilized - Non-Cash				0
Ending balance		0		0
Restructuring Plan 2014 | Reserves for customer receivables
Restructuring Reserve [Roll Forward]
Beginning balance			6,605	11,464
Charge (Credit) to Income	(232)	339	(585)	1,630
Foreign Currency Translation			45	(321)
Utilized - Cash			0	0
Utilized - Non-Cash			3,739	3,863
Ending balance	2,326	8,910	2,326	8,910
Restructuring Plan 2014 | Other restructuring costs
Restructuring Reserve [Roll Forward]
Beginning balance			968	2,496
Charge (Credit) to Income	(131)	987	35	8,066
Foreign Currency Translation			24	(67)
Utilized - Cash			214	4,045
Utilized - Non-Cash			307	4,832
Ending balance	$ 506	$ 1,618	$ 506	$ 1,618