Investments in Joint Ventures and Partnerships (Details Textual) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012 Signature [Member]	Dec. 31, 2011 Signature [Member]	Feb. 27, 2009 I A T G Puerto Rico L L C [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Face Amount				$ 750,000
Percentage Of IATG Ownership Transferred		50.00%
Write Down Of Interest In Asset			0
Percentage Of Additional Interest In IATG Property				25.00%
Consideration Description Of IATG Interest				As consideration for the assignment of the IATG interests, Signature will pay to Presidential one half of any net proceeds (after Signature pays the first $25,000 of expenses) received by Signature from the asset.
Proceeds from Equity Method Investment, Dividends or Distributions	$ 77,642