Area of a real estate property.

No definition available.

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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

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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Balance Type:	debit
Period Type:	duration

- Definition

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Debt (Narrative) (Details) ft² in Thousands								12 Months Ended
Debt (Narrative) (Details) ft² in Thousands	Nov. 16, 2018 USD ($) ft²	Nov. 15, 2018	Oct. 26, 2018 USD ($)	Oct. 25, 2018	Aug. 09, 2018 USD ($) ft²	Aug. 08, 2018 USD ($)	Jan. 05, 2018 USD ($) ft²	Dec. 31, 2018
Mortgages
Debt Instrument
Debt instrument, interest rate, effective percentage								3.84%
Unsecured Debt
Debt Instrument
Debt instrument, interest rate, effective percentage								3.87%
Term Loan Maturing in February 2024 \| Unsecured Debt
Debt Instrument
Debt instrument, interest rate, stated percentage								3.52%
Carrying amount			$ 750,000,000
Term Loan Maturing in February 2024 \| Unsecured Debt \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)			1.00%
Maturing in October 2020 \| Unsecured Debt \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)				1.15%
Office \| 33-00 Northern Boulevard
Debt Instrument
Loans payable							$ 100,000,000
Square footage of real estate property \| ft²							471
Debt term							7 years
Debt instrument, interest rate, stated percentage							4.14%
Debt repayment							$ 37,200,000
Office \| 33-00 Northern Boulevard \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)							1.80%
Office \| 33-00 Northern Boulevard \| Mortgages
Debt Instrument
Debt instrument, interest rate, effective percentage							4.43%
Net proceeds from debt							$ 59,800,000
Retail \| 4 Union Square South \| Matures in 2025
Debt Instrument
Loans payable					$ 120,000,000
Square footage of real estate property \| ft²					206
Debt instrument, interest rate, stated percentage								3.75%
Retail \| 4 Union Square South \| Matures in 2025 \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)					1.40%
Retail \| 4 Union Square South \| Maturing in 2019
Debt Instrument
Loans payable						$ 113,000,000
Retail \| 4 Union Square South \| Maturing in 2019 \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)						2.15%
Retail \| 150 W 34th Street \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)		2.25%
Retail \| 150 W 34th Street \| Matures in 2024
Debt Instrument
Loans payable	$ 205,000,000
Square footage of real estate property \| ft²	78
Debt instrument, interest rate, stated percentage								4.26%
Retail \| 150 W 34th Street \| Matures in 2024 \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)	1.88%
Retail \| 150 W 34th Street \| Matures in 2024 \| Participating Mortgage
Debt Instrument
Loans payable	$ 105,000,000
Debt instrument, interest rate, stated percentage								4.38%
Retail \| 150 W 34th Street \| Matures in 2024 \| Participating Mortgage \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)	2.00%
Interest rate Swap \| Term Loan Maturing in February 2024 \| Unsecured Debt \| LIBOR
Debt Instrument
Spread Over LIBOR (in percentage)								1.00%
Interest rate Swap \| Term Loan Maturing in October 2023 \| Unsecured Debt
Debt Instrument
Debt instrument, interest rate, stated percentage								3.87%