Investments In and Advances to Partnerships - Summarized Financial Information, Statement of Operations (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013 partnership		Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Number of Local Partnerships					3
Expenses:
Cash distributions					$ 71,910		$ 0
Share of income from partnerships	1,707,757		323,609		1,927,458		1,006,103
Local Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Number of Local Partnerships where cumulative losses exceed investment							2
Amount of cumulative losses exceeding investment			3,267,561				3,267,561
Number of Local Partnerships	2		5		3		5
Revenue:
Rental	350,407		1,186,021		1,312,237		3,709,303
Other	4,928		105,318		39,920		305,063
Gain on sale of property	2,455,833		0		2,455,833		0
Total revenue	2,811,168		1,291,339		3,807,990		4,014,366
Expenses:
Operating	154,838		690,764		837,859		2,203,634
Interest	0		97,189		39,849		294,092
Depreciation and amortization	22,093		129,605		86,963		398,373
Total expenses	176,931		917,558		964,671		2,896,099
Net income (loss)	2,634,237		373,781		2,843,319		1,118,267
Cash distributions	1,764,047		0		1,835,957		0
Cash distributions recorded as reduction of investments in partnerships	1,764,047		0		1,821,810		0
Cash distribution recorded as income	0		0		14,147		0
Partnership's share of Local Partnership net income	1,707,757		323,609		1,913,311		1,006,103
Share of income from partnerships	1,707,757		323,609		1,927,458		1,006,103
Local Partnership Equity Method [Member]
Schedule of Equity Method Investments [Line Items]
Number of Local Partnerships	2	[1]	3	[2]	2	[1]	3	[2]
Revenue:
Rental	350,407		899,941		1,146,679		2,753,429
Other	4,928		98,472		37,609		278,957
Gain on sale of property	2,455,833		0		2,455,833		0
Total revenue	2,811,168		998,413		3,640,121		3,032,386
Expenses:
Operating	154,838		508,667		723,526		1,527,151
Interest	0		57,569		2,971		172,705
Depreciation and amortization	22,093		101,942		69,623		305,828
Total expenses	176,931		668,178		796,120		2,005,684
Net income (loss)	2,634,237		330,235		2,844,001		1,026,702
Cash distributions	1,764,047		0		1,821,810		0
Cash distributions recorded as reduction of investments in partnerships	1,764,047		0		1,821,810		0
Cash distribution recorded as income	0		0		0		0
Partnership's share of Local Partnership net income	1,707,757		323,609		1,913,311		1,006,103
Share of income from partnerships	1,707,757		323,609		1,913,311		1,006,103
Local Partnership Equity Method Suspended [Member]
Schedule of Equity Method Investments [Line Items]
Number of Local Partnerships	0	[3]	2	[4]	1	[3]	2	[4]
Revenue:
Rental	0		286,080		165,558		955,874
Other	0		6,846		2,311		26,106
Gain on sale of property	0		0		0		0
Total revenue	0		292,926		167,869		981,980
Expenses:
Operating	0		182,097		114,333		676,483
Interest	0		39,620		36,878		121,387
Depreciation and amortization	0		27,663		17,340		92,545
Total expenses	0		249,380		168,551		890,415
Net income (loss)	0		43,546		(682)		91,565
Cash distributions	0		0		14,147		0
Cash distributions recorded as reduction of investments in partnerships	0		0		0		0
Cash distribution recorded as income	0		0		14,147		0
Partnership's share of Local Partnership net income	0		0		0		0
Share of income from partnerships	$ 0		$ 0		$ 14,147		$ 0

[1] Chestnut,Westwood Village

[2] Capital Commons, Chestnut, Westwood Village

[3] New Sharon Woods

[4] Hillview Terrace, New Sharon Woods