Loans Receivable (Details Textual) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Loans Receivable (Textual) [Abstract]
Libor Floor			3.00%
Loans Receivable Accrued Interest			$ 635,000		$ 500,000
Cumulative Accretion of loans receivable			1,408,000		9,914,000
Unrecognized unamortized discount	6,955,000		6,955,000		8,399,000
Weighted Average Coupon Rate On Loans Receivable			7.35%		5.99%
Weighted Average Yield to maturity			10.43%		12.64%
Non recourse secured financings	29,150,000		29,150,000		29,150,000
Interest rate			Libor plus 3%
Non performing loans	0		0		0
Past due payments	0		0		0
Provision for loan loss	$ 0	$ 0	$ 0	$ 0
Mezzanine [Member] | 127 West 25th Street [Member]
Loans Receivable (Textual) [Abstract]
Interest rate			greater of 14.0% or LIBOR + 10%.