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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Current assets [Abstract] |  |  |
Accounts receivable | $ 7,566 | $ (13,492) | $ (2,786)
Inventories | 17,001 | 4,429 | 3,827
Other current assets | (3,119) | (9,531) | 1,350
Total change in current assets | 21,448 | (18,594) | 2,391
Current liabilities [Abstract] |  |  |
Trade accounts payable | (9,103) | 5,720 | (1,205)
Accrued compensation | (183) | (2,504) | 7,143
Accrued income taxes | (8,059) | 1,330 | (2,278)
Other current liabilities | (6,854) | 7,883 | (9,054)
Total change in current liabilities | (24,199) | 12,429 | (5,394)
Net change | $ (2,751) | $ (6,165) | $ (3,003)

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- Definition Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services. + 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 (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + 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 (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. + 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 (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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