Investments In and Advances to Partnerships - Pending and Completed Sales (Details) (USD $)	9 Months Ended		0 Months Ended			0 Months Ended	9 Months Ended	0 Months Ended			1 Months Ended		0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 29, 2012 New Sharon Woods [Member]	Sep. 30, 2013 New Sharon Woods [Member]	Dec. 31, 2012 New Sharon Woods [Member]	Aug. 02, 2012 Chestnut Apartments [Member]	Sep. 30, 2013 Chestnut Apartments [Member]	Aug. 13, 2013 Westwood Village [Member]	Aug. 02, 2012 Westwood Village [Member]	Aug. 29, 2012 Traverse City elderly, LP [Member]	Sep. 30, 2012 Traverse City elderly, LP [Member]	Sep. 30, 2013 Traverse City elderly, LP [Member]	Dec. 17, 2012 Capitol Senior Limited Dividend Housing Association Limited Partnership [Member]	Aug. 13, 2013 Managing General Partner [Member] Westwood Village [Member]
Schedule of Equity Method Investments [Line Items]
Sale price of investment			$ 1			$ 5,440,000			$ 3,085,000	$ 299,990			$ 6,245,328
Investment basis				0	0		1,338,526	425,415		0
Expected proceeds from sale							3,500,000
Unamortized acquisition fees				5,777
Proceeds received from disposition of investment	0	299,990						1,764,047
Disposition Fee, Amount Paid	154,250	92,000									92,000			154,250
Proceeds from sale of limited partner interest										207,990
Disposition fee and net unamortized deferred costs								5,547				7,465
Additional distribution of sale proceeds								$ 350,000