Restructuring Charges Restructuring Table $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 1,530
Restructuring Charges	8,314
Payments for Restructuring	(4,666)
Restructuring Reserve, Accrual Adjustment	(17)
Restructuring Reserve	5,161
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	53
Restructuring Charges	6,211
Payments for Restructuring	(2,470)
Restructuring Reserve, Accrual Adjustment	(17)
Restructuring Reserve	3,777
Special Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	1,477
Restructuring Charges	0
Payments for Restructuring	(93)
Restructuring Reserve, Accrual Adjustment	0
Restructuring Reserve	1,384
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	0
Restructuring Charges	2,103
Payments for Restructuring	(2,103)
Restructuring Reserve, Accrual Adjustment	0
Restructuring Reserve	0
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2,700
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 3,200