Discontinued Operations and Held For Sale (Summary of Restructuring Expenses) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Other wind down costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 25,100,000
Astora Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	60,850,000	$ 0
Astora Restructuring | Employee separation, retention and other benefit-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	20,476,000
Astora Restructuring | Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	21,328,000
Astora Restructuring | Contract termination charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	8,074,000
Astora Restructuring | Other wind down costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 10,972,000