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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment

Property and equipment consists of the following:

 

    Estimated
Useful Life
    As of December 31,  
    (in years)     2016      2015  
Cost:                  
Computer hardware and software     3 - 5     $ 78     $ 1,296  
Equipment     7       218       854  
Leasehold improvements     Term of lease       339       900  
              635       3,050  
Accumulated depreciation and amortization                        
Computer hardware and software             61       1,202  
Equipment             159       347  
Leasehold improvements             201       547  
              421       2,096  
Property and equipment, net           $ 214     $ 954