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Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Leases [Abstract]      
Lease expense $ 157 $ 175 $ 330
Future lease payments for operating leases with initial or remaining noncancelable term of one year or more [Abstract]      
2017 349    
2018 207    
2019 207    
2020 & Thereafter 10    
Total minimum payments required $ 773