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CRITICAL ACCOUNTING JUDGEMENTS AND KEY SOURCES OF ESTIMATION UNCERTAINTY (Details) - USD ($)
 12 Months Ended
Oct. 22, 2015
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Corporate Information And Statement Of IFRS Compliance [Abstract]        
Impairment loss recognised in profit or loss, goodwill   $ 0 $ 0 $ 0
Allowance for impairment of tax credits, net of recoveries   $ (47,000) 48,000 1,586,000
Disclosure of subsidiaries [line items]        
Growth rate used to extrapolate cash flow projections   3.00%    
Intangible assets   $ 27,110,000 11,778,000  
Impairment loss recognised in profit or loss (note 4.6)   720,000 306,000 4,708,000
Dynaflows S.A.        
Disclosure of subsidiaries [line items]        
Proportion of ownership interests held by non-controlling interests 33.27%      
Internally generated        
Disclosure of subsidiaries [line items]        
Intangible assets   $ 9,388,000 7,855,000  
Goodwill        
Disclosure of subsidiaries [line items]        
Explanation of period over which management has projected cash flows   5 years    
Growth rate used to extrapolate cash flow projections   22.00%    
Discount rate applied to cash flow projections   9.50%    
Trade receivables        
Disclosure of subsidiaries [line items]        
Additional allowance (recoveries)   $ 275,000 3,421,000 (5,000)
Customer relationships and contracts        
Disclosure of subsidiaries [line items]        
Intangible assets   14,265,000 1,000,000  
Impairment loss recognised in profit or loss (note 4.6)       0
Licenses and internal developments        
Disclosure of subsidiaries [line items]        
Intangible assets   12,845,000 10,778,000  
Licenses and internal developments | Internally generated        
Disclosure of subsidiaries [line items]        
Impairment loss recognised in profit or loss (note 4.6)   720,000 306,000 0
Cost        
Disclosure of subsidiaries [line items]        
Intangible assets   74,189,000 48,439,000 38,120,000
Cost | Customer relationships and contracts        
Disclosure of subsidiaries [line items]        
Intangible assets   25,285,000 10,896,000 10,153,000
Cost | Licenses and internal developments        
Disclosure of subsidiaries [line items]        
Intangible assets   $ 48,318,000 $ 36,957,000 $ 27,381,000