SPONSORS AND MANAGEMENT WARRANTS	12 Months Ended
SPONSORS AND MANAGEMENT WARRANTS	Dec. 31, 2015
SPONSORS AND MANAGEMENT WARRANTS
SPONSORS AND MANAGEMENT WARRANTS	NOTE 3 SPONSOR AND MANAGEMENT WARRANTS On November 9, 2010, we issued warrants to purchase shares of our common stock to certain of our sponsors (the “Sponsor Warrants”). The exercise price for the warrants of $50.00 per share and the number of shares of common stock underlying each warrant are subject to adjustment for future stock dividends, splits or reverse splits of our common stock or certain other events. The 1,916,667 of Sponsor Warrants outstanding are exercisable at any time and expire on November 9, 2017. In November 2010 and February 2011, we entered into certain agreements (the “Management Warrants”) with David R. Weinreb, our Chief Executive Officer, Grant Herlitz, our President, and Andrew C. Richardson, our Chief Financial Officer, in each case prior to his appointment to such position to purchase shares of our common stock. The Management Warrants represent 2,862,687 underlying shares, which may be adjusted pursuant to a net settlement option, and were issued pursuant to such agreements at fair value in exchange for a combined total of approximately $19.0 million in cash from such executives at the commencement of their respective employment. Mr. Weinreb and Mr. Herlitz’s warrants have exercise prices of $42.23 per share and Mr. Richardson’s warrants have an exercise price of $54.50 per share. Generally, the Management Warrants become exercisable in November 2016 and expire in February 2018. As of December 31, 2015, the estimated $123.1 million fair value for the Sponsor Warrants representing warrants to purchase 1,916,667 shares and the estimated $184.7 million fair value for the Management Warrants representing warrants to purchase 2,862,687 shares are recorded as liabilities because the holders of these warrants could require us to settle such warrants in cash upon a change of control. The estimated fair values for the outstanding Sponsor Warrants and Management Warrants were $157.1 million and $209.0 million, respectively, as of December 31, 2014. The fair values are estimated using an option pricing model and Level 3 inputs due to the unavailability of comparable market data, as further discussed in Note 7 – Fair Value of Financial Instruments. Decreases and increases in the fair value of the Sponsor Warrants and the Management Warrants are recognized as warrant liability gains or losses, respectively, in the Consolidated Statements of Operations.

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.