Quarterly report pursuant to Section 13 or 15(d)

12. Deposits and other assets (Details)

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12. Deposits and other assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Assets, Noncurrent [Abstract]    
Deposits $ 600 $ 453
Other 151 104
Total other assets $ 751 $ 557