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Compensation of Key Management Personnel (Tables)
 12 Months Ended
Dec. 31, 2017
Related Party [Abstract]  
Schedule of key management personnel remuneration
Key management personnel remuneration consisted of the following:
(000s)
 
2017

 
2016

Salaries, incentives and short-term benefits
 
$
2,615

 
$
3,237

Share-based compensation
 
898

 
1,775

 
 
$
3,513

 
$
5,012