Area of land held.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

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Business development involves the development of products and services, their delivery, design and their implementation. Business development includes a number of techniques designed to grow an economic enterprise. Such techniques include, but are not limited to, assessments of marketing opportunities and target markets, intelligence gathering on customers and competitors, generating leads for possible sales, follow-up sales activity, formal proposal writing and business model design. Business development involves evaluating a business and then realizing its full potential, using such tools as marketing, sales, information management and customer service.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

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

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No definition available.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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

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Net rentable area for properties owned.

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No definition available.

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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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The cash outflow associated with the purchase of real estate held-for-investment and real estate joint ventures.

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Annual rent payments

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No definition available.

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Square feet of additional zoning air rights.

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No definition available.

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Debt Instrument, Extension Term

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No definition available.

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Equity Method Investment, Additional Ownership Percentage

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No definition available.

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Length in feet of a frontage of property.

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No definition available.

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Gain (Loss) Representing Purchasing Price Fair Value Adjustment

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No definition available.

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The total number of lease term.

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No definition available.

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The total number of term extensions available to the borrower

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No definition available.

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Number of Seats

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No definition available.

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Percentage of Fee

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No definition available.

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Acquisition and related transaction cost associate with Real Estate business activities.

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No definition available.

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No definition available.

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Acquisitions (Narrative) (Details) ft² in Thousands, $ in Thousands				1 Months Ended	12 Months Ended
	Oct. 30, 2018 USD ($)	Sep. 21, 2018 USD ($) ft² seat ft	Feb. 09, 2018 USD ($) ft²	Jun. 15, 2017 USD ($) extension	Dec. 31, 2018 USD ($) ft²	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 29, 2018	Jul. 30, 2012 USD ($)
Business Acquisition
Acquisitions of real estate and other					$ 574,812	$ 30,607	$ 91,103
Transaction related costs, impairment loss and other					31,320	1,776	9,451
Gain from purchase price fair value adjustment					44,060	0	0
Income tax expense					$ 37,633	$ 42,375	$ 7,923
537 West 26th Street
Business Acquisition
Area of land (in sq feet) \| ft²			14
Area of additional zoning air rights (in sq feet) \| ft²			55
Acquisitions of real estate and other			$ 44,000
Marquis Theater \| 1355 Broadway
Business Acquisition
Capital lease obligations									$ 240,000
Number of seats \| seat		1,611
Retail Condominium \| 1355 Broadway
Business Acquisition
Area of land (in sq feet) \| ft²		45
Payments to acquire real estate		$ 442,000
Percentage of fee		100.00%
Digital Sign \| 1355 Broadway
Business Acquisition
Area of land (in sq feet) \| ft²		25
Frontage length \| ft		330
Farley Office and Retail Building
Business Acquisition
Equity method ownership percentage	95.00%							50.10%
Equity method additional ownership percentage	44.90%				44.90%
Gain from purchase price fair value adjustment					$ 44,060
Income tax expense					$ 16,771
Farley Office and Retail Building \| Farley Post Office Joint Venture
Business Acquisition
Net rentable area \| ft²					850
Length of lease				99 years
Upfront contribution cost				$ 230,000
Annual rent payments				5,000
Construction loan				$ 271,000	$ 257,941
Consideration transferred	$ 41,500
Transaction related costs, impairment loss and other	$ 33,026
Development costs					1,600,000
Construction in progress					$ 445,693
Office \| Farley Office and Retail Building \| Farley Post Office Joint Venture
Business Acquisition
Net rentable area \| ft²					730
Retail \| Farley Office and Retail Building \| Farley Post Office Joint Venture
Business Acquisition
Net rentable area \| ft²					120
Interest Only Loan Maturing in June 2019 \| Farley Office and Retail Building \| Farley Post Office Joint Venture
Business Acquisition
Debt instrument, interest rate, effective percentage					4.64%
Number of loan extensions available \| extension				2
Length of extension available				1 year
Interest Only Loan Maturing in June 2019 \| LIBOR \| Farley Office and Retail Building \| Farley Post Office Joint Venture
Business Acquisition
Spread Over LIBOR (in percentage)				3.25%