Restructuring Restructuring Expected Costs, Costs To-Date, Remaining Costs, and Costs During the Period - 2013 Projects (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		15 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ (4,234)	$ (7,793)	$ (9,681)	$ (2,269)
2013 Project [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense					$ 26,200