Investment in Leasing Operations: Summary of Leasing Operations (Details) - USD ($)	Dec. 30, 2023	Dec. 31, 2022
Direct financing and sales-type leases:
Minimum lease payments receivable	$ 77,100	$ 294,100
Estimated unguaranteed residual value of equipment	17,700	461,700
Unearned lease income net of initial direct costs deferred	(6,700)	(103,800)
Security deposits	(28,100)	(303,300)
Total investment in direct financing and sales-type leases	60,000	348,700
Allowance for credit losses	(1,500)	(7,100)
Net investment in direct financing and sales-type leases	58,500	341,600
Operating leases:
Operating lease assets	876,500	716,100
Less accumulated depreciation and amortization	(859,900)	(707,400)
Net investment in operating leases	16,600	8,700
Total net investment in leasing operations	75,100	350,300
Net investment in leases - current	75,100	344,900
Net investment in leases - long-term	$ 0	$ 5,400