Investments in Local Limited Partnerships (Details) (USD $)	Dec. 31, 2012	Mar. 31, 2012
Capital contributions paid to Local Limited Partnerships and purchase price paid to withdrawing partners of Local Limited Partnerships	$ 2,479,708	$ 4,660,327
Cumulative equity in losses of Local Limited Partnerships (excluding cumulative unrecognized losses of $1,546,000 at March 31, 2012)	1,011,824	(1,145,942)
Cumulative cash distributions received from Local Limited Partnerships	(1,987,583)	(2,223,150)
Investments in Local Limited Partnerships before adjustments	1,503,949	1,291,235
Excess investment costs over the underlying assets acquired:
Acquisition fees and expenses	72,487	136,290
Cumulative amortization of acquisition fees and expenses	(40,662)	(61,005)
Investments in Local Limited Partnerships before impairment	1,535,774	1,366,520
Cumulative impairment on investments in Local Limited Partnerships	(378,000)	(378,000)
Investments in Local Limited Partnerships	$ 1,157,774	$ 988,520