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Financial Instruments and Fair Value Measurements (Financial Assets that are Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Sep. 30, 2020
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Financial assets: |  |
Total financial assets | $ 31,887 | $ 65,834
Financial liabilities: |  |
Total financial liabilities | 71,421 | 51,387
Cross Currency Interest Rate Swaps [Member] |  |
Financial liabilities: |  |
Cross-currency interest rate swaps | 71,421 | 51,387
Level 1 [Member] |  |
Financial assets: |  |
Total financial assets | 31,887 | 65,834
Level 2 [Member] |  |
Financial liabilities: |  |
Total financial liabilities | 71,421 | 51,387
Level 2 [Member] | Cross Currency Interest Rate Swaps [Member] |  |
Financial liabilities: |  |
Cross-currency interest rate swaps | 71,421 | 51,387
Investments in Term Deposits with Foreign Banks [Member] |  |
Financial assets: |  |
Investments | 3,051 | 40,453
Investments in Term Deposits with Foreign Banks [Member] | Level 1 [Member] |  |
Financial assets: |  |
Investments | 3,051 | 40,453
Equity Securities [Member] |  |
Financial assets: |  |
Equity securities | 28,836 | 25,381
Equity Securities [Member] | Level 1 [Member] |  |
Financial assets: |  |
Equity securities | $ 28,836 | $ 25,381

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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