Note 16 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Accruals and reserves not currently deductible	$ 10,314	$ 10,426
Federal, state and foreign tax credits	1,151	157
Other assets	1,048	613
Equity compensation	2,359	2,183
Net operating loss carryforwards	49,687	9,692
Lease liabilities	16,774	17,513
Capitalized research and development	8,050	6,807
Deferred revenue	3,573	3,672
Outside basis differences in subsidiaries	0	6,058
Deferred tax assets	92,956	57,121
Depreciation and intangible amortization	(82,732)	(97,572)
Right-of-use assets	(15,662)	(16,632)
Other liabilities	(605)	(317)
Net unrealized gain on hedging and investments	0	(1,574)
Deferred tax liabilities	(98,999)	(116,095)
Valuation allowance	(47,865)	(8,348)
Net deferred tax asset (liability)	$ (53,908)	$ (67,322)