Note 19 - Segment and Geographic Information - Summary of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Revenues	$ 124,509	$ 89,253
Asia [Member]
Revenues	26,685	13,823
CANADA
Revenues	2,703	1,225
Europe [Member]
Revenues	20,826	28,381
South America [Member]
Revenues	8,166	7,547
UNITED STATES
Revenues	62,611	35,171
Other [Member]
Revenues	$ 3,518	$ 3,106