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Commitments and Contingencies (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
ft²
Dec. 31, 2015
USD ($)
ft²
Future minimum rental payments for office space under non-cancellable operating leases [Abstract]    
2017 $ 13  
2018 14  
2019 3  
2020 0  
2021 0  
Thereafter 0  
Total 30  
Rent expense [Abstract]    
Rent expense $ 12 $ 12
Approximate square feet of leased office space | ft² 1,085 1,085