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Acquisition Pro forma Information (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Business Combinations [Abstract]    
Revenue $ 128,247us-gaap_BusinessAcquisitionsProFormaRevenue $ 162,007us-gaap_BusinessAcquisitionsProFormaRevenue
Net loss $ (24,299)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss $ (9,850)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Loss per share (usd per share) $ (1.63)us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic $ (0.67)us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic