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Derivative Instruments (Tables) | 12 Months Ended
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Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of realized gains (losses) on derivatives not designated as hedging instruments | Net gains and losses related to foreign exchange contracts are recorded as a component of “Other income (expense)” in the accompanying Consolidated Statements of Operations and are as follows for the fiscal years ended September 30, 2023, 2022 and 2021 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended September 30,
​ |  | 2023 |  | 2022 |  | 2021
Realized gains (losses) on derivatives not designated as hedging instruments | ​ | $ | (1,174) | ​ | $ | 991 | ​ | $ | (7,781)
Schedule of notional amounts of derivative instruments | The notional amounts of the Company’s derivative instruments as of September 30, 2023 and 2022 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Year Ended September 30,
​ | ​ | Hedge Designation | ​ | ​ | 2023 | ​ | ​ | 2022
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cross-currency swap | ​ | Net Investment Hedge | ​ | $ | 436,360 | ​ | $ | 960,000
Foreign exchange contracts | ​ | Undesignated | ​ | ​ | 184,800 | ​ | ​ | 585,800
Schedule of fair value of derivative instruments | The fair value of derivative instruments are as follows at September 30, 2023 and 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Fair Value of Assets | ​ | ​ | Fair Value of Liabilities
As of September 30, | ​ | ​ | 2023 | ​ | ​ | 2022 | ​ | ​ | 2023 | ​ | ​ | 2022
Derivatives not designated as hedging instruments | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Foreign exchange contracts | ​ | $ | 44 | ​ | $ | 634 | ​ | $ | (421) | ​ | $ | (230)
Total fair value | ​ | $ | 44 | ​ | $ | 634 | ​ | $ | (421) | ​ | $ | (230)
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4B + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A + Details
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