Restructuring (Schedule of Beginning and End Liability Balance and Expense by Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Costs charged to expense	$ 401	$ 0	$ 3,676	$ 8,911
Severance Expense
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			1,385
Costs charged to expense			3,315
Costs paid or otherwise settled			(4,629)
Restructuring reserve, ending balance	71		71
Lease Termination Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			4,991
Costs charged to expense			361
Costs paid or otherwise settled			(1,493)
Restructuring reserve, ending balance	$ 3,859		$ 3,859