Restructuring and Other Related Costs Restructuring plan provision summary (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2011 Employee Severance and Related Costs [Member]	Dec. 31, 2012 Employee Severance and Related Costs [Member]	Dec. 31, 2011 Real Estate Exit and Related Costs [Member]	Dec. 31, 2012 Real Estate Exit and Related Costs [Member]	Dec. 31, 2011 Asset Write-offs [Member]	Dec. 31, 2012 Asset Write-offs [Member]	Dec. 31, 2012 Accured Restructuring Liability [Member]	Dec. 31, 2011 Accured Restructuring Liability [Member]	Sep. 30, 2011 Accured Restructuring Liability [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning	$ 5,739	$ 5,372	$ 831	$ 831	$ 1,530	$ 0	$ 934	$ 6,203	$ 8,100
Cash Payments	(367)	(4,358)	0	(701)	0	0
Non-cash payments	0	(587)	0	377	(1,530)	0
Restructuring Reserve, Ending	$ 5,372	$ 427	$ 831	$ 507	$ 0	$ 0	$ 934	$ 6,203	$ 8,100