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Investment in Leasing Operations: Minimum Lease Payments Receivable (Details) - USD ($)
Mar. 28, 2020
Dec. 28, 2019
Direct Financing and Sales-Type Leases, Minimum Lease Payments Receivable    
2020 $ 12,473,400  
2021 8,578,400  
2022 1,826,600  
2023 33,400  
2024 13,900  
Thereafter 10,800  
Total 22,936,500 $ 26,001,200
Direct Financing and Sales-Type Leases, Income Amortization    
2020 1,824,700  
2021 764,500  
2022 84,100  
2023 2,500  
2024 1,400  
Thereafter 400  
Total $ 2,677,600