Note 15 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2020 |
Sep. 30, 2019 |
Mar. 31, 2019 |
|
| Preferred Stock, Shares Authorized (in shares) | 5,000,000 | 5,000,000 | 5,000,000 | |
| Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.01 | $ 0.01 | $ 0.01 | |
| Preferred Stock, Shares Issued, Total (in shares) | 0 | 0 | 0 | 0 |
| Dividends, Total | $ 0 | $ 0 | ||
| Preferred Stock, Shares Outstanding, Ending Balance (in shares) | 0 | 0 | 0 | 0 |