Note 15 - Segment and Geographic Information - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Total revenue	$ 143,418	$ 136,355	$ 290,928	$ 278,080
UNITED STATES
Total revenue	89,943	87,735	183,412	177,861
CHINA
Total revenue	12,739	13,646	27,626	28,544
UNITED KINGDOM
Total revenue	8,083	5,625	15,881	11,301
Europe [Member]
Total revenue	25,259	22,393	49,578	45,123
Asia Pacific [Member]
Total revenue	$ 7,394	$ 6,956	$ 14,431	$ 15,251