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Severance and Other Charges (Details) - Company`s accrual for severance and other charges (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Severance and Other Charges (Details) - Company`s accrual for severance and other charges [Line Items]
December 31, 2014	$ 602us-gaap_RestructuringReserve
Provision	6us-gaap_SeveranceCosts1
Payments	(146)us-gaap_PaymentsForRestructuring
March 31, 2015	462us-gaap_RestructuringReserve
Employee Severance [Member]
Severance and Other Charges (Details) - Company`s accrual for severance and other charges [Line Items]
December 31, 2014	523
Provision	6
Payments	(129)
March 31, 2015	400
Contract Termination [Member]
Severance and Other Charges (Details) - Company`s accrual for severance and other charges [Line Items]
December 31, 2014	79
Provision
Payments	(17)
March 31, 2015	$ 62

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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