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24. RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
DisclosureOfManagementFeesLineItems [Line Items]    
Management fees $ 1,397 $ 1,484
Base and variable fees    
DisclosureOfManagementFeesLineItems [Line Items]    
Management fees 1,108 1,291
Discretionary fees    
DisclosureOfManagementFeesLineItems [Line Items]    
Management fees 0 77
Commission fees    
DisclosureOfManagementFeesLineItems [Line Items]    
Management fees $ 289 $ 116