XML 41 R156.htm IDEA: XBRL DOCUMENT v3.20.1
Provisions for other liabilities - Total Provisions (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of other provisions [abstract]      
Noncurrent provisions $ 2,936 $ 3,296  
Current provisions 236 329  
Total provisions $ 3,172 $ 3,625 $ 4,843