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Commitments and Contingencies Litigation (Details) (USD $) |  |  |  |  | 0 Months Ended |
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Jun. 30, 2014 | Mar. 14, 2014 investor | Jun. 20, 2013 investor | Dec. 24, 2013 Pending Litigation [Member] New York State Supreme Court, New York County [Member] claim | Sep. 04, 2013 Predecessor [Member] New York State Supreme Court, New York County [Member] participant | May 17, 2013 Predecessor [Member] New York State Supreme Court, New York County [Member] participant | Sep. 28, 2012 Predecessor [Member] New York State Supreme Court, New York County [Member] llc | Sep. 28, 2012 Predecessor [Member] New York State Supreme Court, New York County [Member] ESRT [Member] | Jan. 28, 2013 Predecessor [Member] Pending Litigation [Member] participant | May 17, 2013 Predecessor [Member] Pending Litigation [Member] New York State Supreme Court, New York County [Member] participant | Jan. 28, 2013 Predecessor [Member] Pending Litigation [Member] New York State Supreme Court, New York County [Member] participant | Mar. 31, 2012 Predecessor [Member] Pending Litigation [Member] New York State Supreme Court, New York County [Member] claim
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of claims |  |  |  | 4 |  |  |  |  |  |  |  | 5
Damages awarded |  |  |  |  |  |  | $ 55,000,000.0 |  |  |  |  |
Percent of damages awarded required to be in cash |  |  |  |  |  |  | 80.00% |  |  |  |  |
Maximum percent of freely-tradable common stock or partnership units |  |  |  |  |  |  |  | 20.00% |  |  |  |
Number of LLC's |  |  |  |  |  |  | 3 |  |  |  |  |
Maximum difference between exchange value and prospectus statement |  |  |  |  |  |  | 10.00% |  |  |  |  |
Proceeds from issuance of common stock threshold amount of consolidation considerations |  |  |  |  |  |  | 600,000,000.0 |  |  |  |  |
Number of plaintiffs |  |  |  |  |  |  |  |  | 6 | 4,500 | 6 |
Number of plaintiffs opting out of settlement |  |  |  |  | 2 | 12 |  |  |  |  |  |
Attorney fees sought |  |  |  |  |  | 15,000,000 |  |  |  |  |  |
Attorney expenses sought |  |  |  |  |  | 295,895 |  |  |  |  |  |
Attorney fees awarded |  |  |  |  |  | 11,590,000 |  |  |  |  |  |
Attorney expenses awarded |  |  |  |  |  | 265,282 |  |  |  |  |  |
Number of additional investors who apposed the settlement |  |  | 1 |  |  |  |  |  |  |  |  |
Number of investors who had filed a notice of appeal |  | 1 |  |  |  |  |  |  |  |  |  |
Cash, FDIC Insured Amount | $ 250,000 |  |  |  |  |  |  |  |  |  |  |

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