Restructuring and Other Related Costs Restructuring plan provision summary (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 8,100	$ 5,716	$ 0	$ 8,100
Employee Severance and Related Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning		427	5,372
Cash Payments		(427)	(4,358)	(367)
Restructuring Charges	5,739	4,568
Non-cash payments		0	(587)	0
Restructuring Reserve, Ending	5,372	4,568	427	5,372
Real Estate Exit and Related Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning		507	831
Cash Payments		(353)	(701)	0
Restructuring Charges	831	615
Non-cash payments		0	377	0
Restructuring Reserve, Ending	831	769	507	831
Asset Write-offs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning		0	0
Cash Payments		0	0	0
Restructuring Charges	1,530	533
Non-cash payments		(533)	0	(1,530)
Restructuring Reserve, Ending	0	0	0	0
Accrued Restructuring Liability [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Ending	$ 6,203	$ 5,337	$ 934	$ 6,203