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Investment in Leasing Operations: Leasing Income (Details) - USD ($)
3 Months Ended
Mar. 30, 2024
Apr. 01, 2023
Leasing income    
Interest income on direct financing and sales-type leases $ 5,900 $ 94,800
Operating lease income 627,800 852,700
Income on sales of equipment under lease 196,700 558,200
Other 6,400 131,300
Leasing income $ 836,800 $ 1,637,000