Schedule of Equity Method Investments in Local Limited Partnerships (Details) (Parenthetical) (Local Limited Partnerships [Member], USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012
Local Limited Partnerships [Member]
Acquisition fees and costs, net of accumulated amortization	$ 370,989	$ 353,823
Warehouse interest and costs, net of accumulated amortization	$ 221	$ 212