Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies - Weighted Average Common Shares Outstanding (Details)

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Note 1 - Summary of Significant Accounting Policies - Weighted Average Common Shares Outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Net income $ (12,453) $ 32,533 $ 49,362
Weighted average common shares (in shares) 14,582,450 14,975,972 13,771,665
Dilutive potential common shares (in shares) 0 36,555 134,319
Weighted average dilutive common shares outstanding (in shares) 14,582,450 15,012,527 13,905,984
Basic (in dollars per share) $ (0.85) $ 2.17 $ 3.58
Diluted (in dollars per share) $ (0.85) $ 2.17 $ 3.55