XML 93 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Dec. 31, 2017
Computer equipment | Minimum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 3 years
Computer equipment | Maximum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 7 years
Furniture and fixtures  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 7 years
Mining equipment | Minimum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 2 years
Mining equipment | Maximum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 5 years
Mining equipment | Minimum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 5 years
Mining equipment | Maximum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 9 years
Mobile equipment components | Minimum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 2 years
Mobile equipment components | Maximum  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life of property, plant and equipment 9 years