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Derivative Financial Instruments (Tables) | 9 Months Ended
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Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Summary of Outstanding Foreign Currency Forward Contracts | The following tables summarize our outstanding foreign currency forward contracts, by currency, at June 30, 2021 and September 30, 2020:
| June 30, 2021
| Contract Amount |  | Fair Value
| Foreign Currency |  | USD |  | USD
| (In thousands)
Sell foreign currency: |  |  |  |  |  |
Euro (EUR) | EUR | 16,600 |  |  | $ | 19,715 |  |  | $ | — |
Buy foreign currency: |  |  |  |  |  |
British pound (GBP) | GBP | 14,601 |  |  | $ | 20,300 |  |  | $ | — |
Singapore dollar (SGD) | SGD | 5,363 |  |  | $ | 4,000 |  |  | $ | — |
| September 30, 2020
| Contract Amount |  | Fair Value
| Foreign Currency |  | USD |  | USD
| (In thousands)
Sell foreign currency: |  |  |  |  |  |
Euro (EUR) | EUR | 15,000 |  |  | $ | 17,656 |  |  | $ | — |
Buy foreign currency: |  |  |  |  |  |
British pound (GBP) | GBP | 16,555 |  |  | $ | 21,300 |  |  | $ | — |
Singapore dollar (SGD) | SGD | 7,815 |  |  | $ | 5,700 |  |  | $ | — |
Losses on Derivative Financial Instruments | Gains (losses) on derivative financial instruments were recorded in our condensed consolidated statements of income and comprehensive income as a component of other income, net, and consisted of the following:
| Quarter Ended June 30, |  | Nine Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
| (In thousands)
Gains (losses) on foreign currency forward contracts | $ | 88 |  |  | $ | (380) |  |  | $ | 3,003 |  |  | $ | (1,429) |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
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