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Contingent Liabilities (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015 | Sep. 30, 2012 | Mar. 31, 2016 | Mar. 31, 2015
Contingent Liabilities Details Narrative |  |  |  |  |  |
Cap on environment financial responsibility | $ 1,871 |  |  |  | $ 1,871 |
Environmental remediation expense |  |  |  | $ 1,771 |  |
Total cost of remediation | 1,900 |  |  |  | 1,900 |
Environmental remediation recovery | $ 0 | $ 3,000 | $ 0 |  | $ 3,000 | $ 0

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- Definition The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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