Debt Instrument, Number of Instruments Refinanced

No definition available.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Number 210

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-Glossary Income Tax Expense (or Benefit)

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-Topic 740

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-Paragraph 9

-Subparagraph (a),(b)

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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-Glossary Financing Activities

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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+ Details

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Subsequent Events Subsequent Events (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended		9 Months Ended	0 Months Ended		0 Months Ended		0 Months Ended		0 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
Subsequent Events Subsequent Events (Details) (USD $)	Jul. 15, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014 Mortgages [Member]	Sep. 30, 2014 Floating Rate Debt - 1350 Broadway - 2nd Lien Mortgage Loan [Member] Mortgages [Member]	Oct. 01, 2014 Floating Rate Debt - 1350 Broadway - 2nd Lien Mortgage Loan [Member] Mortgages [Member] Subsequent Event [Member]	Sep. 30, 2014 Metro Center [Member] Mortgages [Member]	Oct. 01, 2014 Metro Center [Member] Mortgages [Member] Subsequent Event [Member]	Oct. 01, 2014 Metro Center [Member] Mortgages [Member] Subsequent Event [Member]	Oct. 01, 2014 Floating Rate Debt, One Grand Central Place - Fourth Lien [Member] Mortgages [Member] Subsequent Event [Member] loan	Oct. 01, 2014 Floating Rate Debt, One Grand Central Place - Fourth Lien [Member] Mortgages [Member] Subsequent Event [Member]	Oct. 01, 2014 LIBOR [Member] Floating Rate Debt, One Grand Central Place - Fourth Lien [Member] Mortgages [Member] Subsequent Event [Member]	Sep. 30, 2014 Real Estate, Segment [Member]	Sep. 30, 2013 Real Estate, Segment [Member]	Sep. 30, 2014 Real Estate, Segment [Member]	Sep. 30, 2013 Real Estate, Segment [Member]	Sep. 30, 2014 Observatory, Segment [Member] [Member]	Sep. 30, 2014 Observatory, Segment [Member] [Member]	Sep. 30, 2014 Other Segments [Member]	Sep. 30, 2013 Other Segments [Member]	Sep. 30, 2014 Other Segments [Member]	Sep. 30, 2013 Other Segments [Member]	Sep. 30, 2014 Total, Segment [Member]	Sep. 30, 2013 Total, Segment [Member]	Sep. 30, 2014 Total, Segment [Member]	Sep. 30, 2013 Total, Segment [Member]
Subsequent Event [Line Items]
Income Tax Expense (Benefit)		$ 3,004,000	$ 4,153,000										$ (371,000)		$ (1,024,000)		$ (2,970,000)	$ (3,035,000)	$ (75,000)		$ (94,000)		$ (3,416,000)		$ (4,153,000)
Interest expense		(17,674,000)	(46,640,000)										(17,674,000)	(14,906,000)	(46,640,000)	(43,817,000)	0	0	0	0	0	0	(17,674,000)	(14,906,000)	(46,640,000)	(43,817,000)
Repayments of Long-term Debt			57,478,000		13,700,000	13,700,000
Total consideration paid	733,600,000
Proceeds from credit facility			295,600,000					100,000,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months				108,137,000
Stated Rate							5.89%		3.59%
Debt Instrument, Number of Instruments Refinanced										3
Debt Instrument, Face Amount											$ 91,000,000
Basis spread on variable rate												1.35%