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Earnings Per Share of Common Stock - Basic and diluted EPS computations (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Earnings Per Share of Common Stock        
Net income (loss) $ 321 $ 156 $ 1,282 $ (210)
Less: net income attributable to nonvested common stock 19 8 77 0
Net income (loss) attributable to common shareholders $ 302 $ 148 $ 1,205 $ (210)
Weighted average total shares outstanding - basic 4,688 4,517 4,621 4,237
Less: weighted average non-vested shares outstanding 297 243 279 0
Weighted average number of common shares outstanding - basic 4,391 4,274 4,342 4,237
Add: potential common shares from non-vested stock awards and the assumed exercise of stock options 71 11 53 0
Weighted average common shares outstanding - diluted 4,462 4,285 4,395 4,237
Net income (loss) per common share - basic $ 0.07 $ 0.03 $ 0.28 $ (0.05)
Net income (loss) per common share - diluted $ 0.07 $ 0.03 $ 0.27 $ (0.05)