CONDENSED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT) - 3 months ended Jun. 30, 2015 - USD ($)	Total	Assignees [Member]	General Partner [Member]	Series Fifteen [Member]	Series Fifteen [Member] Assignees [Member]	Series Fifteen [Member] General Partner [Member]	Series Sixteen [Member]	Series Sixteen [Member] Assignees [Member]	Series Sixteen [Member] General Partner [Member]	Series Seventeen [Member]	Series Seventeen [Member] Assignees [Member]	Series Seventeen [Member] General Partner [Member]	Series Eighteen [Member]	Series Eighteen [Member] Assignees [Member]	Series Eighteen [Member] General Partner [Member]	Series Nineteen [Member]	Series Nineteen [Member] Assignees [Member]	Series Nineteen [Member] General Partner [Member]
Partners' capital (deficit) at Mar. 31, 2015	$ (14,005,429)	$ (12,054,726)	$ (1,950,703)	$ (3,287,212)	$ (2,932,151)	$ (355,061)	$ (7,869,788)	$ (7,324,482)	$ (545,306)	$ (503,501)	$ (81,517)	$ (421,984)	$ (3,720,398)	$ (3,372,966)	$ (347,432)	$ 1,375,470	$ 1,656,390	$ (280,920)
Net income (loss)	5,814,790	5,756,642	58,148	374,504	370,759	3,745	(48,500)	(48,015)	(485)	5,534,374	5,479,030	55,344	(31,312)	(30,999)	(313)	(14,276)	(14,133)	(143)
Partners' capital (deficit) at Jun. 30, 2015	$ (8,190,639)	$ (6,298,084)	$ (1,892,555)	$ (2,912,708)	$ (2,561,392)	$ (351,316)	$ (7,918,288)	$ (7,372,497)	$ (545,791)	$ 5,030,873	$ 5,397,513	$ (366,640)	$ (3,751,710)	$ (3,403,965)	$ (347,745)	$ 1,361,194	$ 1,642,257	$ (281,063)