Public Housing Capital Fund Trusts Information Table on Public Housing Capital Fund Trusts (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Principal Outstanding September 30, 2012		$ 65,264,703
Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Principal Outstanding September 30, 2012	63,439,193
Standard & Poor's, AA- Rating [Member] | Public Housing Capital Fund Trust I [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	10 years 9 months 0 days	12 years 9 months 0 days
Investment Rating	AA-	AA-
Debt, Weighted Average Interest Rate	5.33%	5.33%
Principal Outstanding September 30, 2012	26,210,285	26,406,558
Standard & Poor's, AA- Rating [Member] | Public Housing Capital Fund Trust II [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	10 years 2 months 20 days	12 years 3 months 18 days
Investment Rating	AA-	AA-
Debt, Weighted Average Interest Rate	4.24%	4.24%
Principal Outstanding September 30, 2012	16,330,476	17,959,713
Standard & Poor's, BBB Rating [Member] | Public Housing Capital Fund Trust III [Member] | Public housing capital fund trusts [Member]
Schedule of Available-for-sale Securities [Line Items]
Weighted Average Lives (Years)	11 years 3 months 21 days	13 years 3 months 18 days
Investment Rating	BBB	BBB
Debt, Weighted Average Interest Rate	5.41%	5.41%
Principal Outstanding September 30, 2012	$ 20,898,432	$ 20,898,432