Condensed Statements of Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Statements of Income [Abstract]
Net lease revenue from Leasing Agent	$ 455,973	$ 497,957	$ 921,024	$ 956,031
Other operating income (expenses):
Depreciation	(37,916)	(209,158)	(116,539)	(530,167)
Other general and administrative expenses	(86,576)	(89,028)	(182,174)	(187,590)
Net gain on disposal of equipment	466,344	435,023	1,006,276	967,077
Total other operating income (expenses)	341,852	136,837	707,563	249,320
Net income	797,825	634,794	1,628,587	1,205,351
Allocation of net income:
General partner	22,885	26,427	38,647	48,436
Limited partners	774,940	608,367	1,589,940	1,156,915
Net income	$ 797,825	$ 634,794	$ 1,628,587	$ 1,205,351
Limited partners' per unit share of net income	$ 0.11	$ 0.09	$ 0.22	$ 0.16