Investment in Leasing Operations: Investment Aging (Details) - USD ($)	Jun. 30, 2018	Dec. 30, 2017
Investment in leasing operations
0-60 Days Delinquent and Accruing	$ 44,090,500	$ 41,840,500
61-90 Days Delinquent and Accruing		133,700
Non-Accrual	2,700
Total investment in direct financing and sales-type leases	44,093,200	41,974,200
Middle-Market
Investment in leasing operations
0-60 Days Delinquent and Accruing	42,843,000	40,657,500
61-90 Days Delinquent and Accruing		133,700
Total investment in direct financing and sales-type leases	42,843,000	40,791,200
Small-Ticket
Investment in leasing operations
0-60 Days Delinquent and Accruing	1,247,500	1,183,000
Non-Accrual	2,700
Total investment in direct financing and sales-type leases	$ 1,250,200	$ 1,183,000