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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Lease Payments on Non-Cancelable Operating Leases

    Discontinued operations     Continuing operations     Total  
Years ending December 31,                  
2015   $ 241     $ 786     $ 1,027  
2016     184       292       476  
2017           147       147  
2018           107       107  
2019           109       109  
2020 and thereafter           27       27  
    $ 425     $ 1,468     $ 1,893