Investment in Leasing Operations: (Details 5) (USD $)	Sep. 29, 2012	Dec. 31, 2011
Investment In Leases
Total investment in direct financing and sales-type leases	$ 34,375,600	$ 30,001,100
Allowance for Credit Losses
Total	802,000	803,800
Investment in leases
Investment In Leases
Collectively evaluated for loss potential	34,375,600	30,001,100
Total investment in direct financing and sales-type leases	34,375,600	30,001,100
Allowance for Credit Losses
Collectively evaluated for loss potential	802,000	803,800
Total	$ 802,000	$ 803,800