Investment in Leasing Operations: Minimum Lease Payments Receivable (Details) - USD ($)	Apr. 01, 2017	Dec. 31, 2016
Direct Financing and Sales-Type Leases, Minimum Lease Payments Receivable
2017	$ 17,651,800
2018	13,477,100
2019	6,116,800
2020	53,300
2021	8,400
Thereafter	11,300
Total	37,318,700	$ 37,839,800
Direct Financing and Sales-Type Leases, Income Amortization
2017	3,452,600
2018	1,988,100
2019	355,100
2020	1,800
2021	1,000
Thereafter	500
Total	5,799,100
Operating Leases, Minimum Lease Payments Receivable
Total	$ 0