XML 118 R68.htm IDEA: XBRL DOCUMENT v3.19.1
EXPLORATION AND EVALUATION ASSETS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Beginning balance $ 43,338 $ 30,792
Mine and camp costs 3,143 4,301
Provision for reclamation   3,762
Effect of movements in exchange rates   2,159
Drilling and exploration 1,488 766
Depreciation of plant and equipment 540 716
Interest and financing costs 414 377
Geological and related services 205 264
Water treatment and tailing storage facility costs 53 224
Assessments and taxes 115 179
Mineral exploration tax credit   (202)
Assays 13  
Effect of movements in exchange rates (2,528)
Ending balance 46,781 43,338
Durango, Mexico [Member]    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Beginning balance 9,034 7,979
Mine and camp costs
Provision for reclamation  
Effect of movements in exchange rates   555
Drilling and exploration 346 418
Depreciation of plant and equipment
Interest and financing costs
Geological and related services
Water treatment and tailing storage facility costs
Assessments and taxes 86 82
Mineral exploration tax credit  
Assays  
Effect of movements in exchange rates 226  
Ending balance 9,692 9,034
British Columbia & Yukon, Canada [Member]    
Disclosure of disaggregation of revenue from contracts with customers [line items]    
Beginning balance 34,304 22,813
Mine and camp costs 3,143 4,301
Provision for reclamation   3,762
Effect of movements in exchange rates   1,604
Drilling and exploration 1,142 348
Depreciation of plant and equipment 540 716
Interest and financing costs 414 377
Geological and related services 205 264
Water treatment and tailing storage facility costs 53 224
Assessments and taxes 29 97
Mineral exploration tax credit   (202)
Assays 13  
Effect of movements in exchange rates (2,754)  
Ending balance $ 37,089 $ 34,304