Income Tax Basis Net Income and Partners' Capital Reconciliation of partners' capital account to tax basis (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Basis Net Income and Partners' Capital [Abstract]
Financial statement partners' capital	$ 7,377,212	$ 10,899,279	$ 10,345,803	$ 10,739,759
Accumulated meals and entertainment	390	390	390
Accumulated bad debt expense, net, for financial reporting purposes greater than amounts for income tax purposes	381	381	381
Accumulated depreciation expense for financial reporting purposes greater than amounts for income tax purposes	3,812,448	3,854,659	3,867,033
Capitalization of syndication costs for income tax purposes, which are accounted for as cost of capital for financial reporting purposes	5,223,360	5,223,360	5,223,360
Accumulated rental income accrued for financial reporting purposes greater than amounts for income tax purposes	(348,871)	(317,221)	(305,394)
Accumulated expenses deductible when paid for income tax purposes less than amounts accrued for financial reporting purposes	464	464	464
Accumulated expenses capitalized for income tax purposes greater than amounts deducted for financial reporting purposes	10,145	10,145	10,145
Accumulated gains on sale of properties for financial reporting purposes in excess of income tax purposes	(2,201,036)	(2,201,036)	(1,620,688)
Accumulated impairment losses taken for financial reporting purposes in excess of amounts for income tax purposes	703,543	703,543	703,543
Other	(355,558)	(355,054)	(101,161)
Income tax basis partners' capital	$ 14,222,478	$ 17,818,910	$ 18,123,876