Discontinued Operations and Assets and Liabilities Held For Sale (Summary of Restructuring Expenses) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other wind down costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1,900,000	$ 4,400,000
Astora Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 0	60,673,000
Astora Restructuring | Employee separation, retention and other benefit-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		16,149,000
Astora Restructuring | Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		21,179,000
Astora Restructuring | Contract termination charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		10,224,000
Astora Restructuring | Other wind down costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses		$ 13,121,000