Note 5 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2024	Aug. 30, 2024	Sep. 30, 2023
Financing Receivable, before Allowance for Credit Loss	$ 12,996		$ 1,216
Financing Receivable, Allowance for Credit Loss	$ 900		$ (0)
Promissory Note [Member] \| Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Financing Receivable, before Allowance for Credit Loss		$ 3,500
Financing Receivable, Allowance for Credit Loss		900
Promissory Note [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value, Nonrecurring [Member] \| Subsidiary, Oil and Gas Product Manufacturing Operations in the Russian Federation [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Financing Receivable, before Allowance for Credit Loss		3,500
Financing Receivable, Allowance for Credit Loss		$ 900

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

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+ Details