Quarterly report [Sections 13 or 15(d)]

Property and Equipment, Net - Narrative (Details)

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Property and Equipment, Net - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Sep. 30, 2025
Property Plant And Equipment [Line Items]          
Loss on disposal of long-lived assets     $ 0 $ 780,000  
Accelerated depreciation $ 1,270,000   1,475,000   $ 119,266,000
Impact on accelerated depreciation on net income, amount $ 1,246,000 $ (96,128,000) $ 1,398,000 $ (96,128,000)  
Impact of accelerated depreciation, earnings (losses) per share, basic (in dollars per share) $ 0.16 $ (12.59) $ 0.18 $ (12.59)  
Impact of accelerated depreciation, earnings (losses) per share, diluted (in dollars per share) $ 0.16 $ (12.59) $ 0.18 $ (12.59)  
Impairment of long-lived assets $ 0   $ 0 $ 24,966,000  
Citrus trees          
Property Plant And Equipment [Line Items]          
Estimated useful life of citrus trees (in months) 3 years 6 months   3 years 6 months    
Citrus trees | Minimum          
Property Plant And Equipment [Line Items]          
Estimated useful life of citrus trees (in months)         4 months
Citrus trees | Maximum          
Property Plant And Equipment [Line Items]          
Estimated useful life of citrus trees (in months)         16 months