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SIGNIFICANT ACCOUNTING POLICIES (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash generated by (used in) Operating Activities      
Net income $ 1,626 $ 2,522 $ 2,016
Adjustments for non-cash items:      
Depreciation and depletion 3,256 2,703 1,913
Total before changes in non-cash working capital items 4,225 6,910 5,921
Net change in non-cash working capital items 4,999 (9,077) (1,098)
Total cash generated by operating activities 9,224 (2,167) 4,823
Financing Activities      
Total cash generated by financing activities 3,855 (3,055) 20,006
Investing Activities      
Exploration and evaluation expenditures (5,361) (5,527) (4,810)
Total cash used in investing activities (13,229) (3,135) (18,493)
Change in cash and effect of exchange rates (150) (8,357) 6,336
Effect of exchange rates (18) (3) 43
Cash, Beginning 3,420 11,780 5,401
Cash, Ending 3,252 3,420 11,780
As Previously Reported [Member]      
Cash generated by (used in) Operating Activities      
Net income   2,653 1,504
Adjustments for non-cash items:      
Depreciation and depletion   2,572 1,341
Other changes in operating activities   1,685 1,992
Total before changes in non-cash working capital items   6,910 4,837
Net change in non-cash working capital items   (9,077) (1,098)
Total cash generated by operating activities   (2,167) 3,739
Financing Activities      
Total cash generated by financing activities   (3,055) 20,006
Investing Activities      
Exploration and evaluation expenditures     (8,313)
Recovery of exploration costs from concentrate proceeds     4,587
Other changes in investing activities     (13,683)
Total cash used in investing activities   (3,135) (17,409)
Change in cash and effect of exchange rates   (8,357) 6,336
Effect of exchange rates   (3) 43
Cash, Beginning 3,420 11,780 5,401
Cash, Ending   3,420 11,780
Adjustment [Member]      
Cash generated by (used in) Operating Activities      
Net income   (131) 512
Adjustments for non-cash items:      
Depreciation and depletion   131 572
Other changes in operating activities  
Total before changes in non-cash working capital items   1,084
Net change in non-cash working capital items  
Total cash generated by operating activities   1,084
Financing Activities      
Total cash generated by financing activities  
Investing Activities      
Exploration and evaluation expenditures     3,503
Recovery of exploration costs from concentrate proceeds     (4,587)
Other changes in investing activities    
Total cash used in investing activities   (1,084)
Change in cash and effect of exchange rates  
Effect of exchange rates  
Cash, Beginning
Cash, Ending  
As Adjusted [Member]      
Cash generated by (used in) Operating Activities      
Net income   2,522 2,016
Adjustments for non-cash items:      
Depreciation and depletion   2,703 1,913
Other changes in operating activities   1,685 1,992
Total before changes in non-cash working capital items   6,910 5,921
Net change in non-cash working capital items   (9,077) (1,098)
Total cash generated by operating activities   (2,167) 4,823
Financing Activities      
Total cash generated by financing activities   (3,055) 20,006
Investing Activities      
Exploration and evaluation expenditures     (4,810)
Recovery of exploration costs from concentrate proceeds    
Other changes in investing activities     (13,683)
Total cash used in investing activities   (3,135) (18,493)
Change in cash and effect of exchange rates   (8,357) 6,336
Effect of exchange rates   (3) 43
Cash, Beginning $ 3,420 11,780 5,401
Cash, Ending   $ 3,420 $ 11,780