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Business Reorganization (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014 employee	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated	50
Restructuring charges	$ 2,750us-gaap_RestructuringCharges	$ 6,020us-gaap_RestructuringCharges
Restructuring reserve	2,750us-gaap_RestructuringReserve
One-time Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,112
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,174
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 638

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References+ Details