Quarterly report [Sections 13 or 15(d)]

Note 2 - Net (Loss) Income Per Share (Details Textual)

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Note 2 - Net (Loss) Income Per Share (Details Textual) - shares
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Share-Based Payment Arrangement, Option [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 139,791 400,266 185,779 402,551
Performance Shares [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 51,838 76,121 60,477 76,121