Other Charges - Operating Expenses Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 8,021	$ 4,569	$ 4,172
Other charges and (gains)	(2,185)	4,000
Other charges	20,299	20,651	14,234
Labor reduction costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,393	3,340	3,915
Lease obligation costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	6,628	1,229	257
Other miscellaneous
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	$ 0
Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	18,033	9,822
Restructuring Charges [Member] | Labor reduction costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,380	3,020
Restructuring Charges [Member] | Lease obligation costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	15,198	4,273
Restructuring Charges [Member] | Other miscellaneous
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,455	2,529
Restructuring Charges-Payments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(14,581)	(9,425)
Restructuring Charges-Payments [Member] | Labor reduction costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(3,327)	(3,595)
Restructuring Charges-Payments [Member] | Lease obligation costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(9,799)	(3,301)
Restructuring Charges-Payments [Member] | Other miscellaneous
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(1,455)	(2,529)
Non-Cash Charges [Member]
Restructuring Cost and Reserve [Line Items]
Inventory losses	287	314
Loss on the sale of fixed assets	3,491	5,019
Other, net	673	1,496
Restructuring Charges-Total [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 22,484	$ 16,651