CONDENSED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT) (USD $)	Total	Series Fifteen [Member]	Series Sixteen [Member]	Series Seventeen [Member]	Series Eighteen [Member]	Series Nineteen [Member]	Assignees [Member]	Assignees [Member] Series Fifteen [Member]	Assignees [Member] Series Sixteen [Member]	Assignees [Member] Series Seventeen [Member]	Assignees [Member] Series Eighteen [Member]	Assignees [Member] Series Nineteen [Member]	General Partner [Member]	General Partner [Member] Series Fifteen [Member]	General Partner [Member] Series Sixteen [Member]	General Partner [Member] Series Seventeen [Member]	General Partner [Member] Series Eighteen [Member]	General Partner [Member] Series Nineteen [Member]
Partners' capital (deficit) at Mar. 31, 2011	$ (19,387,802)	$ (3,741,393)	$ (8,049,524)	$ (6,670,022)	$ (5,040,012)	$ 4,113,149	$ (17,338,646)	$ (3,381,790)	$ (7,502,420)	$ (6,182,544)	$ (4,679,384)	$ 4,407,492	$ (2,049,156)	$ (359,603)	$ (547,104)	$ (487,478)	$ (360,628)	$ (294,343)
Distributions	(261,830)	0	0	0	0	(261,830)	(259,212)	0	0	0	0	(259,212)	(2,618)	0	0	0	0	(2,618)
Net Income (loss)	(111,882)	179,196	(84,159)	27,952	(213,986)	(20,885)	(110,763)	177,404	(83,317)	27,672	(211,846)	(20,676)	(1,119)	1,792	(842)	280	(2,140)	(209)
Partners' capital (deficit) at Dec. 31, 2011	(19,761,514)	(3,562,197)	(8,133,683)	(6,642,070)	(5,253,998)	3,830,434	(17,708,621)	(3,204,386)	(7,585,737)	(6,154,872)	(4,891,230)	4,127,604	(2,052,893)	(357,811)	(547,946)	(487,198)	(362,768)	(297,170)
Partners' capital (deficit) at Sep. 30, 2011
Net Income (loss)	65,839	299,397	(87,442)	(38,109)	(73,169)	(34,838)
Partners' capital (deficit) at Dec. 31, 2011	$ (19,761,514)	$ (3,562,197)	$ (8,133,683)	$ (6,642,070)	$ (5,253,998)	$ 3,830,434