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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)
12 Months Ended
Dec. 31, 2013
Office furniture, equipment and light vehicles | Minimum
 
Property and Equipment  
Estimated economic life 3 years
Office furniture, equipment and light vehicles | Maximum
 
Property and Equipment  
Estimated economic life 5 years
Trailers, heavy vehicles and other site equipment | Minimum
 
Property and Equipment  
Estimated economic life 5 years
Trailers, heavy vehicles and other site equipment | Maximum
 
Property and Equipment  
Estimated economic life 15 years
Building
 
Property and Equipment  
Estimated economic life 20 years