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Hedging Instruments (Narrative) (Details) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 18, 2025 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 EUR (€) | Dec. 31, 2019 USD ($) | Jun. 30, 2015 EUR (€)
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Estimated net amount of losses expected to be reclassified out of accumulated other comprehensive income and into earnings within next 12 months |  |  |  |  | $ 2,500 |  |  |  |
Cash flow hedge, hedge percentage of estimated exposure from intercompany products purchases and sales |  |  |  |  | 85.00% |  |  |  |
General duration of foreign currency exchange contracts |  |  |  |  | 24 months |  |  |  |
Derivative, notional amount |  |  | $ 208,600 |  | $ 208,600 |  |  | $ 210,900 |
Unrealized gain (loss) on Euro-denominated notes, net of tax |  |  | (2,824) | $ 3,007 | (3,466) | $ 3,507 |  |  |
Unrealized gain (loss) on cross currency swaps, net of tax |  |  | (3,941) | 3,125 | (1,339) | 3,993 |  |  |
Excluded component recognized as reduction of interest |  |  | $ 700 | $ 600 | $ 2,000 | $ 1,700 |  |  |
Series C Senior Note |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount | € |  |  |  |  |  |  |  |  | € 88,900,000
Stated interest rate |  |  |  |  |  |  |  |  | 1.785%
Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  | € 90,000,000.0 |  |
Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  | € 10,000,000 |  |
Scenario, Forecast | Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from hedge |  | $ 104,500 |  |  |  |  |  |  |
Scenario, Forecast | Derivatives and non-derivatives designated as hedging instruments | Cross Currency Swaps |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from hedge | $ 11,400 |  |  |  |  |  |  |  |

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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