Quarterly report pursuant to Section 13 or 15(d)

Equity Investment (Details)

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Equity Investment (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2009
Equity Investment    
Project Expenditure Percentage   25.00%
Equity Method Investment, Ownership Percentage 19.00%  
Write off of investments $ 189  
Jet Metals    
Equity Investment    
Project Expenditure Percentage   75.00%