Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, Net - Narrative (Details)

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Property and Equipment, Net - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Oct. 30, 2020
USD ($)
a
Jun. 01, 2020
USD ($)
a
May 04, 2020
USD ($)
a
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Property Plant And Equipment [Line Items]                
Acres Of Land Purchased | a 3,280              
Gain on sale of real estate, property and equipment and assets held for sale $ 18,230,000     $ (17,000) $ 2,838,000 $ 3,347,000 $ 2,863,000  
Citrus Groves                
Property Plant And Equipment [Line Items]                
Acres of land sold | a   30            
Consideration for discontinued operation   $ 122,000            
Gain (loss) on disposal of discontinued operation   $ 83,000            
Citrus Blocks                
Property Plant And Equipment [Line Items]                
Acres Of Land Purchased | a     334          
Gain on sale of real estate, property and equipment and assets held for sale     $ 2,850,000          
Citrus trees                
Property Plant And Equipment [Line Items]                
Asset impairment charges           $ 0   $ 598,000