Investments In Local Limited Partnerships - Combined Condensed Statements of Operations (Details) (USD $)	3 Months Ended												12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Equity Method Investments and Joint Ventures [Abstract]
Revenue	$ 3,000	$ 15,000	$ 2,000	$ 2,000	$ 5,000	$ 20,000	$ 6,000	$ 3,000	$ 12,000	$ 7,000	$ 14,000		$ 1,384,000	$ 3,914,000	$ 4,234,000
Operating expenses													864,000	2,738,000	3,079,000
Interest expense													228,000	447,000	634,000
Depreciation and amortization													325,000	984,000	1,090,000
Total expenses													1,417,000	4,169,000	4,803,000
Net loss													(33,000)	(255,000)	(569,000)
Net loss allocable to the Partnership													(34,000)	(253,000)	(563,000)
Net loss recorded by the Partnership