Restructuring and Related Charges (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
2015 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	$ 4,305
Restructuring charges	0
Payments	(720)
Adjustments	41	[1]
Accrued restructuring and related charges liability as of period end	3,626
Restructuring Cost [Abstract]
Restructuring charges incurred	24,000
2015 Restructuring Plan [Member] | Severance and Other Employee-related Costs [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	4,242
Restructuring charges	0
Payments	(717)
Adjustments	41	[1]
Accrued restructuring and related charges liability as of period end	3,566
2015 Restructuring Plan [Member] | Consulting and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	63	[2]
Restructuring charges	0	[2]
Payments	(3)	[2]
Adjustments	0	[1],[2]
Accrued restructuring and related charges liability as of period end	60	[2]
2016 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	3,899
Restructuring charges	810
Payments	(2,118)
Adjustments	(73)	[3]
Accrued restructuring and related charges liability as of period end	2,518
Restructuring Cost [Abstract]
Restructuring charges incurred	5,700
2016 Restructuring Plan [Member] | Severance and Other Employee-related Costs [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	3,851
Restructuring charges	794
Payments	(2,054)
Adjustments	(73)	[3]
Accrued restructuring and related charges liability as of period end	2,518
2016 Restructuring Plan [Member] | Consulting and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring and related charges liability as of period start	48	[4]
Restructuring charges	16	[4]
Payments	(64)	[4]
Adjustments	0	[3],[4]
Accrued restructuring and related charges liability as of period end	$ 0	[4]

[1] Adjustments consist primarily of foreign currency translation adjustments.

[2] Consulting and other costs consist of third-party consulting charges incurred in connection with the 2015 Restructuring Plan.

[3] Adjustments consist primarily of actual employee tax and benefit amounts differing from previous estimates.

[4] Consulting and other costs consist of third-party consulting charges incurred in connection with the 2016 Restructuring Plan.