Note 14 - Earnings Per Share (Details Textual) - shares |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
|
| Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares) | 4,626,636 | 4,626,636 | |
| Restricted Stock Units (RSUs) [Member] | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 29,110 | 29,110 | |
| Convertible Debt Securities [Member] | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 1,500,000 | 1,500,000 | |