XML 49 R20.htm IDEA: XBRL DOCUMENT v2.4.0.8
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2014
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Property and Equipment, Estimated Useful Life
Depreciation and amortization is computed on the straight-line method over the estimated useful lives of the assets, or the life of the lease, whichever is shorter, as follows:
 
 
Estimated Useful Life
Building and Building Improvements
20 – 40 years
Mining equipment
2 – 7 years
Office and shop furniture and equipment
3 – 7 years
Vehicles
5 years
 
Fair value measured on a recurring basis
Liabilities measured at fair value on a recurring basis are summarized as follows:
 
 
 
Fair value measurement using inputs
  
Carrying amount
 
 
 
Level 1
  
Level 2
  
Level 3
  
March 31, 2014
  
December 31, 2013
 
 
 
  
  
  
  
 
Financial instruments:
 
 
 
  
  
 
 
  
  
 
Warrant derivative
     
$
225,000
      
$
225,000
  
$
950,000
 
PIK Note derivative
     
$
480,375
      
$
480,375
  
$
2,250,000
 

Schedule of derivative liability
For the Company's warrant and PIK note derivative liabilities, fair value was estimated using a Monte Carlo Model using the following assumptions:
 
Warrant derivative liability
 
Fair Value Measurements
 
 
 
Using Inputs
 
 
 
March 31, 2014
  
December 31, 2013
 
 
 
  
 
Market price and estimated fair value of stock
 
$
0.72
  
$
1.10
 
Exercise price
 
$
1.93
  
$
1.93
 
Term (years)
  
2.73
   
3
 
Dividend yield
 
$
--
  
$
--
 
Expected volatility *
  
56.00
%
  
76.90
%
Risk-free interest rate
  
0.50
%
  
0.78
%

PIK Note derivative liability
 
Fair Value Measurements
 
 
 
Using Inputs
 
 
 
March 31, 2014
  
December 31, 2013
 
 
 
  
 
Market price and estimated fair value of stock
 
$
0.72
  
$
1.10
 
Exercise price
 
$
1.40
  
$
1.40
 
Term (years)
  
9.33
   
9.58
 
Dividend yield
 
$
--
   
--
 
Expected volatility *
  
56.00
%
  
76.90
%
Risk-free interest rate
  
2.63
%
  
2.96
%
 
* During the first quarter of 2014, the Company revised its assumption for expected volatility by switching from a peer-group average volatility to the Company’s three-year historical volatility in measuring the value of the derivative liabilities mentioned above.  Prior to 2011, the occurrence of certain corporate events would not have made the historical volatility calculations meaningful or accurate if included.  This reduction in volatility led to a reduced valuation for both the Warrant and PIK Note derivative liabilities of approximately $118,500 and $126,000, respectively. The remaining decrease in the valuation is attributable to the decline in the Company’s stock price.