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Note 9 - Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Provisions and adjustments	$ 406	$ 754	$ 3,580	$ 431	$ 851	$ 1,701	$ 3,428	$ 786	$ 5,171	$ 6,766	$ 4,577
Employee Severance [Member]
Balance at beginning of period				$ 755				$ 665	755	665
Provisions and adjustments									5,143	4,372
Payments									(5,771)	(4,282)
Balance at end of period	$ 127				$ 755				$ 127	$ 755	$ 665

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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