Investment in Leasing Operations: Summary of Leasing Operations (Details) - USD ($)	Sep. 28, 2019	Dec. 29, 2018
Direct financing and sales-type leases:
Minimum lease payments receivable	$ 31,375,800
Minimum lease payments receivable		$ 40,822,400
Estimated unguaranteed residual value of equipment	4,289,200
Estimated unguaranteed residual value of equipment		4,741,200
Unearned lease income net of initial direct costs deferred	(4,765,000)
Unearned lease income net of initial direct costs deferred		(6,739,900)
Security deposits	(3,900,600)
Security deposits		(4,118,300)
Equipment installed on leases not yet commenced	3,645,700
Equipment installed on leases not yet commenced		5,094,800
Total investment in direct financing and sales-type leases	30,645,100
Total investment in direct financing and sales-type leases		39,800,200
Allowance for credit losses	(676,800)
Allowance for credit losses		(861,200)
Net investment in direct financing and sales-type leases	29,968,300
Net investment in direct financing and sales-type leases		38,939,000
Operating leases:
Operating lease assets	665,800
Less accumulated depreciation and amortization	(636,400)
Net investment in operating leases	29,400
Total net investment in leasing operations	29,997,700
Operating lease assets		777,000
Less accumulated depreciation and amortization		(713,000)
Net investment in operating leases		64,000
Total net investment in leasing operations		39,003,000
Net investment in leases - current	14,352,800
Net investment in leases - long-term	$ 15,644,900
Net investment in leases - current		18,547,500
Net investment in leases - long-term		$ 20,455,500