v3.26.1
Note 10 - Revenues and Other Related Items (Details Textual)
Pure in Thousands, $ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Jun. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]            
Number of Major Customers 0 0 0 0    
Non-US [Member]            
Assets, Noncurrent         $ 0.4 $ 0.6