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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of Property, Plant and Equipment Useful Lives
Where straight-line depreciation is utilized, the range of useful lives for various asset classes is generally as follows:
•
Buildings
15 years
•
Shop tools and equipment
3-5 years
•
Mining equipment
5 years
•
Office equipment
4-5 years
•
Furniture and fixtures
5-7 years
•
Light trucks & utility vehicles
5 years
The following is a summary of plant and equipment:
 
December 31, 2016
 
December 31, 2015
 
Cost
 
Accumulated
Depreciation
 
Net Book Value
 
Cost
 
Accumulated
Depreciation
 
Net Book
Value
Plant and equipment
 
 
 
 
 
 
 
 
 
 
 
Nichols Ranch
$
29,210

 
$
(6,804
)
 
$
22,406

 
$
29,210

 
$
(2,370
)
 
$
26,840

Alta Mesa
13,626

 
(456
)
 
13,170

 
—

 
—

 
—

Equipment and other
13,367

 
(11,361
)
 
2,006

 
13,107

 
(10,878
)
 
2,229

Plant and equipment total
$
56,203

 
$
(18,621
)
 
$
37,582

 
$
42,317

 
$
(13,248
)
 
$
29,069