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Leases (Schedule Of Rental Income) (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 28, 2020
Mar. 28, 2020
Operating Leases, Income Statement, Lease Revenue [Abstract]    
Base rentals $ 4,144,319 $ 7,964,639
Variable rentals 69,665 139,330
Total 4,213,984 8,103,969
Depreciation on owned properties leased to others (1,328,968) (2,657,936)
Other shopping center expenses (899,763) (1,750,748)
Total $ 1,985,253 $ 3,695,285