Restructuring Activity Roll Forward (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 739		$ 2,982
Employee Termination and Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	0		1,398
Moving Costs Associated with Plant Consolidations [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	739		859
Restructuring Plan 1 [Member] | Lease Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Restructuring Reserve	921
Restructuring Charges	0
Restructuring Reserve, Settled with Cash	(117)
Ending Restructuring Reserve	804	[1]
Restructuring Plan 2 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	1,180
Restructuring Reserve [Roll Forward]
Beginning Restructuring Reserve	129
Restructuring Charges	739	[2]
Restructuring Reserve, Settled with Cash	(857)
Ending Restructuring Reserve	11
Restructuring and Related Cost, Expected Cost	2,400
Restructuring Plan 2 [Member] | Employee Termination and Related Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	129
Restructuring Reserve [Roll Forward]
Beginning Restructuring Reserve	129
Restructuring Charges	0	[2]
Restructuring Reserve, Settled with Cash	(118)
Ending Restructuring Reserve	11
Restructuring and Related Cost, Expected Cost	130
Restructuring Plan 2 [Member] | Moving Costs Associated with Plant Consolidations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	1,051
Restructuring Reserve [Roll Forward]
Beginning Restructuring Reserve	0
Restructuring Charges	739	[2]
Restructuring Reserve, Settled with Cash	(739)
Ending Restructuring Reserve	0
Restructuring and Related Cost, Expected Cost	2,270
Accrued Liabilities [Member] | Restructuring Plan 1 [Member]
Restructuring Reserve [Roll Forward]
Ending Restructuring Reserve	465
Other Noncurrent Liabilities [Member] | Restructuring Plan 1 [Member]
Restructuring Reserve [Roll Forward]
Ending Restructuring Reserve	$ 339

[1] Payments on certain of the lease obligations are scheduled to continue until 2016. Market conditions and the Company’s ability to sublease these properties could affect the ultimate charge related to the lease obligations. Any potential recoveries or additional charges could affect amounts reported in the consolidated financial statements of future periods. As of March 31, 2014, the short-term portion of the lease termination costs in the restructuring liability of $465 is included in accrued liabilities and the long-term portion of $339 is included in other non-current liabilities in the Consolidated Balance Sheet.

[2] Costs associated with moving and plant consolidations and employee termination and related benefits are recorded to the restructuring charges line item within the condensed consolidated statements of operations and comprehensive loss as they are incurred.