Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Restructuring Reserve		$ 12,333	$ 2,486	$ 659
Workforce reduction charges		5,074	8,830	2,387
Payments for Restructuring		(10,129)	(2,208)	(560)
Restructuring Reserve	$ 12,333	7,278	12,333	2,486
Employee Termination Costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve		12,333	2,486	340
Workforce reduction charges		5,074	8,830	2,387
Payments for Restructuring		(10,129)	(2,208)	(241)
Restructuring Reserve	12,333	7,278	12,333	2,486
Other Charges
Restructuring Reserve [Roll Forward]
Restructuring Reserve		0	0	319
Workforce reduction charges		0	0	0
Payments for Restructuring		0	0	(319)
Restructuring Reserve	0	$ 0	0	$ 0
CRSAL
Restructuring Reserve [Roll Forward]
Payments for Restructuring			3,225
CRSAL | Employee Termination Costs
Restructuring Reserve [Roll Forward]
Workforce reduction charges	$ 3,000
Payments for Restructuring			3,225
CRSAL | Other Charges
Restructuring Reserve [Roll Forward]
Payments for Restructuring			$ 0