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Severance and Other Charges (Details) - Severance and other charges (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Severance and other charges	$ 6us-gaap_RestructuringCharges	$ 343us-gaap_RestructuringCharges
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges	6	35
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges		43
Legal Settlement [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges		$ 265

- 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