Note 5 - Fair Value Measurement and Fair Value of Financial Instruments - Changes in Contingent Consideration and Warrant Liabilities (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
|
Contingent Consideration [Member] | ||
Balance | $ 3,649 | $ 0 |
Additions | 0 | 3,479 |
Exercises or payments | (2,768) | 0 |
Adjustment to fair value | (631) | 170 |
Balance | 250 | 3,649 |
Warrant [Member] | ||
Balance | 4,404 | 2,486 |
Additions | 0 | 1,319 |
Exercises or payments | 0 | (5,286) |
Adjustment to fair value | (3,655) | 5,885 |
Balance | $ 749 | $ 4,404 |