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Pension Plans (Change in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017
AOCI Attributable to Parent, Before Tax [Roll Forward] |  |
Beginning Balance, value | $ 885,436 | $ 842,666
Ending Balance, value | 874,589 | 885,436
Pension Plan [Member] | Foreign Plan [Member] |  |
AOCI Attributable to Parent, Before Tax [Roll Forward] |  |
Beginning Balance, value | 24,738 | 38,667
Recognized during year - net actuarial (losses) | (2,288) | (3,380)
Occurring during year - settlement loss | (9) | 0
Occurring during year - net actuarial losses (gains) | 5,312 | (11,430)
Foreign exchange impact | (726) | 881
Ending Balance, value | $ 27,027 | $ 24,738

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- Definition Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Gain (Loss) Arising During Period, Net of Tax + References No definition available. + Details
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- Definition Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Occurring During Period, Before Tax + References No definition available. + Details
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- Definition Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Recognized During Period, Before Tax + References No definition available. + Details
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- Definition Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Settlement Loss Occurring During Period, Before Tax + References No definition available. + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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