COMMITMENTS AND CONTINGENCIES (Details) (USD $)			0 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Jun. 29, 2012 Non binding letter of intent with New York City Economic Authority
COMMITMENTS AND CONTINGENCIES.
Amount of outstanding letters of credit and surety bonds	$ 43,400,000	$ 49,300,000
Commitments
Annual ground rent			1,200,000
Annual escalation rate (as a percent)			3.00%
Rent credit to be received			1,500,000
Maximum period for rent credit			30 months
Esplanade maintenance costs agreed to be paid			1,100,000
Period during which esplanade maintenance costs are agreed to be paid			5 years
Initial esplanade payments			$ 210,000