Investments In and Advances to Partnerships - Interests in Profits, Losses and Cash Distributions (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Schedule of Equity Method Investments [Line Items]
Cash distributions	$ 27,437	$ 51,316
Local Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Cash distributions	27,437	51,316
Number of local partnerships with aggregate surplus cash	1	2
Aggregate surplus cash	$ 35,863	$ 1,238,617
Minimum [Member] | Local Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Percent interest in profits, losses, and cash distributions	98.00%
Maximum [Member] | Local Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Percent interest in profits, losses, and cash distributions	98.98%