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Note 5 - Derivative Instruments (Details Textual) - Designated as Hedging Instrument [Member] $ in Thousands, € in Millions |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 03, 2025 USD ($) | Feb. 01, 2024 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Feb. 03, 2025 EUR (€) | Sep. 30, 2024 USD ($) | Feb. 01, 2024 EUR (€) | Feb. 01, 2023 USD ($) | Feb. 01, 2023 EUR (€)
Cross Currency Swap 2 [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | $ 436,000 |  |  |  |  |  |  | € 400 | $ 436,000 | € 400
Derivative, Variable Interest Rate |  |  |  |  |  |  |  |  |  | 1.66% | 1.66%
Derivative, Forward Exchange Rate |  | 1.09 |  |  |  |  |  |  | 1.09 |  |
Gain on Derivative Instruments, Pretax |  | $ 1,400 |  |  |  |  |  |  |  |  |
Cross Currency Swap 3 [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 73,000 | $ 76,000 |  |  |  |  | € 70 |  | € 70 |  |
Derivative, Variable Interest Rate |  | 1.44% |  |  |  |  |  |  | 1.44% |  |
Derivative, Forward Exchange Rate | 1.0419 |  |  |  |  |  | 1.0419 |  |  |  |
Gain on Derivative Instruments, Pretax | $ 3,000 |  |  |  |  |  |  |  |  |  |
Cross Currency Swap 4 [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 260,000 |  |  |  |  |  | € 250 |  |  |  |
Derivative, Variable Interest Rate | 1.80% |  |  |  |  |  | 1.80% |  |  |  |
Cross Currency Interest Rate Contract [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  | $ 260,025 |  | $ 260,025 |  |  | $ 75,978 |  |  |
Interest Income, Other |  |  | $ 800 | $ 1,300 | $ 1,100 | $ 3,100 |  |  |  |  |

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
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- Definition Aggregate gain on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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