Note 9 - Leases (Details Textual) $ in Thousands	12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2021
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 135,598	$ 124,509
Number of Operating Right of Use Asset Related to Leased Facility	2
Accounts Receivable, after Allowance for Credit Loss, Current	$ 14,637	$ 20,157
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Equipment Expense	$ 10,800	$ 11,800
Lease Receivable [Member]
Accounts Receivable, after Allowance for Credit Loss, Current	1,000
Operating Lease, Lease Income	19,300	$ 51,000
Lessor, Operating Lease, Payment to be Received, Next Rolling 12 Months	15,200
Land [Member] | Calgary, Alberta, Canada [Member]
Lessor, Operating Lease, Term of Contract (Year)			5 years
Land and Building [Member] | Calgary, Alberta, Canada and Bogotá, Colombia [Member]
Number of Operating Right of Use Asset Related to Leased Facility		2
Operating Lease, Lease Income	$ 300	$ 200
Maximum [Member] | Equipment [Member]
Lessor, Operating Lease, Term of Contract (Year)	1 year