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Contingent Liabilities (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Contingent Liabilities Details Narrative      
Cap on environment financial responsibility $ 1,871    
Environmental remediation expense 0 $ 2,000 $ (3,000)
Total cost of remediation $ 1,900    
Environmental remediation recovery     $ 3,000