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Supplemental Statements of Cash Flows Information (Schedule of Cash Flow Supplemental Disclosures) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Supplemental Statements of Cash Flows Information |  |
Interest paid, net of amounts capitalized | $ 11,302 | $ 10,317
Income taxes paid | 7,695 | 6,047
Income tax refunds received | 1,772 | 59
Purchases of property, plant and equipment on account | 10,631 | 6,130
Common shares issued from treasury stock to settle employee liabilities | $ 0 | $ 1,767

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- Definition Amount of cash paid for interest. Includes, but is not limited to, payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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