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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)	12 Months Ended
	Dec. 31, 2014
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
Leasehold Improvements
Property and Equipment
Estimated economic life	10 years

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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