Area of a real estate property.

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

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

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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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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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.

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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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Investments in Partially Owned Entities (61 Ninth Avenue) (Details) ft² in Thousands, $ in Thousands	Jan. 28, 2019 USD ($) ft²	Jan. 27, 2019 USD ($)	Sep. 30, 2019
Joint Venture \| 61 9th Avenue
Schedule Of Equity Method Investments
Equity method ownership percentage	45.10%
61 9th Avenue \| Office and Retail Property
Schedule Of Equity Method Investments
Net proceeds from debt	$ 31,000
61 9th Avenue \| Office and Retail Property \| Maturing in January 2026
Schedule Of Equity Method Investments
Loans payable	$ 167,500
Square footage of real estate property (in sqft) \| ft²	166
Debt term (in years)	7 years
Debt instrument, interest rate, stated percentage (percent)			3.40%
61 9th Avenue \| Office and Retail Property \| Maturing in 2021
Schedule Of Equity Method Investments
Loans payable		$ 90,000
LIBOR \| 61 9th Avenue \| Office and Retail Property \| Maturing in January 2026
Schedule Of Equity Method Investments
Spread Over LIBOR (percent)	1.35%
LIBOR \| 61 9th Avenue \| Office and Retail Property \| Maturing in 2021
Schedule Of Equity Method Investments
Spread Over LIBOR (percent)		3.05%