Note 16 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income tax benefit computed at federal statutory rate	$ (35,138)	$ (6,331)	$ (2,086)
State income taxes, net of federal benefit	(836)	(851)	(776)
Foreign income taxed at different rates	(6,160)	(22)	(1,182)
Impact of investments in subsidiaries	(22,583)	(6,058)	0
Nontaxable gain from acquisition earn-out liability reversal	0	(3,959)	0
Change in deferred tax asset valuation allowance	37,677	1,137	1,337
Impact of change in uncertain tax positions	36	(1,321)	(358)
Global intangible low taxed income, net of foreign tax credits	0	0	4,060
Compensation	1,563	1,598	(1,199)
Tax credits	(1,199)	(1,434)	(2,102)
Merger costs	0	1,056	1,629
Other non-deductible expenses and other taxes	1,426	1,304	643
Goodwill impairment	23,444	0	0
Research and development expense deduction	(1,337)	(1,278)	(910)
Income tax (benefit) expense	(3,153)	(17,550)	1,350
Domestic Tax Jurisdiction [Member]
Impact of tax rate changes	(46)	(1,391)	1,531
State and Local Jurisdiction [Member]
Impact of tax rate changes	$ 0	$ 0	$ 763

Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for research and development.

No definition available.