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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, SALE OF ASSET (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) a | Sep. 30, 2013 USD ($)
Long Lived Assets Held-for-sale [Line Items] |  |  |
Proceeds from sale of property, plant, and equipment | $ 0 | $ 6,010 | $ 0
CR&R [Member] |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |
Number of acres of undeveloped land | a |  | 25.4 |
Proceeds from sale of property, plant, and equipment |  | $ 6,000 |
Pre-tax gain from sale of land |  | $ 313 |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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