Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Leases (Details)

v3.8.0.1
Commitments and Contingencies - Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Future minimum rental commitments under non-cancellable operating lease      
2018 $ 508    
2019 460    
2020 438    
2021 405    
2022 414    
Thereafter 2,035    
Total 4,260    
Rent expense $ 509 $ 455 $ 327