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Intangible Assets (Details 1) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]    
2015 (remaining nine months) $ 1,168us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear  
2016 1,510us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 1,281us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 1,223us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 1,140us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 3,102us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Net Carrying Amount $ 9,424us-gaap_FiniteLivedIntangibleAssetsNet $ 9,792us-gaap_FiniteLivedIntangibleAssetsNet