Restructuring Activities and Spin Transaction Costs Pre-2016 Restructuring activities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pre-2016 Restructuring activities [Abstract]
Restructuring Costs and Asset Impairment Charges	$ 300	$ 15,000
Other Noncash Expense	$ 14,600		$ 6,700
Restructuring Charges		40,807	14,946	$ 20,183
Pre-2016 Restructuring Charges		$ 5,600	$ 11,700