Restructuring (Schedule of Beginning and End Liability Balance and Expense by Type) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Reserve [Roll Forward]
Costs charged to expense	$ 8,911	$ 557
Severance Expense [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Costs charged to expense	4,451
Costs paid or otherwise settled	(1,752)
Restructuring reserve, ending balance	2,699
Lease Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Costs charged to expense	4,669
Costs paid or otherwise settled	(2,614)
Restructuring reserve, ending balance	2,055
Other Expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Costs charged to expense	313
Costs paid or otherwise settled	0
Restructuring reserve, ending balance	$ 313