The amount of advance in cash for government assistance received.

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Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc

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Represents the payment collection period as it related to the sale of standard products.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount, before tax, of realized gain (loss) from foreign currency transaction.

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Indicates line item in statement of financial position that includes asset from government assistance, classified as current.

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Amount of increase (decrease) in income from government assistance, classified as nonoperating.

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Indicates line item in statement of income or comprehensive income that includes increase (decrease) in income from government assistance, classified as nonoperating.

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Amount of increase (decrease) in income from government assistance, classified as operating.

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Indicates line item in statement of income or comprehensive income that includes increase (decrease) in income from government assistance, classified as operating.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands		3 Months Ended	6 Months Ended		9 Months Ended		12 Months Ended
	Feb. 01, 2022 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Income Statement [Abstract]
Other Nonoperating Income (Expense)							$ 178	$ (1,042)	$ (898)
Cost of Goods and Services Sold							392,956	401,932	299,914
Assets, Current [Abstract]
Prepaid Expense and Other Assets, Current							80,680	98,754
Capital Expenditures Incurred but Not yet Paid		$ 2,164	$ 2,270	$ 3,040	$ 2,575	$ 2,898	2,767	2,725	10,196
Realized Gain (Loss), Foreign Currency Transaction, before Tax							(3,200)	(4,200)	(1,700)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	$ 16,600						(0)	(0)	$ 16,567
Government Assistance, Nonoperating Income, Increase (Decrease)							$ 2,100	4,300
Government Assistance Amount Advance Current								6,600
Government Assistance, Operating Income, Increase (Decrease)								$ 900
Government Assistance, Nonoperating Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]							Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Government Assistance, Operating Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration]								Cost of Goods and Services Sold
Government Assistance, Asset, Current, Statement of Financial Position [Extensible Enumeration]								Prepaid Expense and Other Assets, Current
Other Noncurrent Liabilities [Member]
Government Assistance Amount Advance Current							$ 1,400	$ 4,700
Accrued Expenses And Other Current Liabilities [Member]
Government Assistance Amount Advance Current								$ 1,900
Minimum [Member]
Standard Payment Period (Year)							30 years
Maximum [Member]
Standard Payment Period (Year)							60 years
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Number of Major Customers							1		0
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Ten Largest Customers [Member]
Concentration Risk, Percentage							26.00%	30.00%	20.00%
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| One Customer [Member]
Concentration Risk, Percentage							10.00%	13.00%