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 5 Months Ended 6 Months Ended 12 Months Ended
Mar. 27, 2020
USD ($)
Sep. 27, 2019
USD ($)
a
Sep. 26, 2019
USD ($)
Oct. 30, 2018
USD ($)
Mar. 31, 2020
USD ($)
property
Mar. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
a
Mar. 31, 2020
USD ($)
property
Mar. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
a
Property, Plant and Equipment [Line Items]                    
Gain on sale of investment in real estate         $ 2,838,000 $ 1,000   $ 2,863,000 $ 23,000  
Discontinued Operations, Disposed of by Sale                    
Property, Plant and Equipment [Line Items]                    
Consideration for discontinued operation $ 2,952,000     $ 206,000,000     $ 47,000     $ 47,000
Gain (loss) on disposal of discontinued operation $ 2,838,000     $ 12,000,000            
Citrus Blocks                    
Property, Plant and Equipment [Line Items]                    
Acres of land purchased | a             203     203
Gain on sale of investment in real estate             $ 100,000 $ 70,000   $ 1,950,000
Amount of collateral and release substituted             $ 1,800,000     1,800,000
Number of additional purchases | property         2     2    
West Ranch | Discontinued Operations, Disposed of by Sale                    
Property, Plant and Equipment [Line Items]                    
Acres of land sold | a   5,500                
Consideration for discontinued operation   $ 14,775,000                
Gain (loss) on disposal of discontinued operation   13,033,000                
Lease rate   $ 80,000 $ 98,750              
Citrus trees                    
Property, Plant and Equipment [Line Items]                    
Asset impairment charges               $ 723,000   $ 244,000