Investments in Partnerships - Investment Reconciliation (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Investment reconciliation
Investments in partnerships at end of year	$ 1,246,665	$ 1,192,336
Local Partnerships [Member]
Investment reconciliation
Investments in partnerships at beginning of year	1,192,336	1,058,968
Share of income from partnerships	828,563	548,918
Distribution from partnerships	(774,234)	(415,550)
Investments in partnerships at end of year	$ 1,246,665	$ 1,192,336