Unsecured Revolving Credit Facility And Term Loans (Narrative) (Details) |
3 Months Ended | |||||||||||
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Mar. 29, 2019
USD ($)
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Mar. 06, 2018 |
Jan. 25, 2017
USD ($)
entity
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Jan. 24, 2017
USD ($)
entity
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Mar. 31, 2019
USD ($)
item
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Mar. 31, 2018
USD ($)
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Jan. 07, 2019
USD ($)
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Dec. 31, 2018
USD ($)
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Mar. 29, 2017 |
Mar. 22, 2017
USD ($)
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Jan. 26, 2017
USD ($)
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Jan. 31, 2016
USD ($)
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| Line of Credit Facility [Line Items] | ||||||||||||
| Loan balance | $ 2,686,317,000 | $ 2,792,651,000 | ||||||||||
| Outstanding borrowings under the facility | 588,805,000 | 790,939,000 | ||||||||||
| Payment for borrowings | $ 204,000,000 | $ 281,000,000 | ||||||||||
| Unsecured Revolving Credit Facility [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Number of lending institutions | entity | 17 | |||||||||||
| Borrowing capacity under the credit facility | $ 600,000,000 | |||||||||||
| Credit facility maturity date | Jul. 01, 2017 | |||||||||||
| Outstanding borrowings under the facility | $ 5,000,000 | 117,000,000 | ||||||||||
| 2017 Credit Agreement [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Terms of the unsecured facility | The 2017 Credit Agreement, which applies to both the 2017 Credit Facility and 2017 Term Loan, includes certain restrictions and covenants which limit, among other things the incurrence of additional indebtedness, the incurrence of liens and the disposition of real estate properties (to the extent that: (i) such property dispositions cause the Company to default on any of the financial ratios of the 2017 Credit Agreement (described below), or (ii) the property dispositions are completed while the Company is under an event of default under the 2017 Credit Agreement, unless, under certain circumstances, such disposition is being carried out to cure such default), and which require compliance with financial ratios relating to the maximum leverage ratio (60 percent), the maximum amount of secured indebtedness (40 percent), the minimum amount of fixed charge coverage (1.5 times), the maximum amount of unsecured indebtedness (60 percent), the minimum amount of unencumbered property interest coverage (2.0 times) and certain investment limitations (generally 15 percent of total capitalization). | |||||||||||
| Terms of dividend restriction | If an event of default has occurred and is continuing, the entire outstanding balance under the 2017 Credit Agreement may (or, in the case of any bankruptcy event of default, shall) become immediately due and payable, and the Company will not make any excess distributions except to enable the General Partner to continue to qualify as a REIT under the IRS Code. | |||||||||||
| Spread over LIBOR | 1.30% | |||||||||||
| 2017 Credit Facility [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Loan maturity date | Jan. 01, 2021 | |||||||||||
| Number of lending institutions | entity | 13 | |||||||||||
| Borrowing capacity under the credit facility | $ 600,000,000 | |||||||||||
| Number of extension options | item | 2 | |||||||||||
| Credit facility, extension period | 6 months | |||||||||||
| Terms of the unsecured facility | The terms of the 2017 Credit Facility include: (1) a four-year term ending in January 2021, with two six-month extension options; (2) revolving credit loans may be made to the Company in an aggregate principal amount of up to $600 million (subject to increase as discussed below), with a sublimit under the 2017 Credit Facility for the issuance of letters of credit in an amount not to exceed $60 million (subject to increase as discussed below); (3) an interest rate, based on the Operating Partnership's unsecured debt ratings from Moody's or S&P, or, at the Operating Partnership's option, if it no longer maintains a debt rating from Moody's or S&P, or such debt ratings fall below Baa3 and BBB-, based on a defined leverage ratio; and (4) a facility fee, currently 25 basis points, payable quarterly based on the Operating Partnership's unsecured debt ratings from Moody's or S&P, or, at the Operating Partnership's option, if it no longer maintains a debt rating from Moody's or S&P or such debt ratings fall below Baa3 and BBB-, based on a defined leverage ratio. | |||||||||||
| Loan period | 4 years | |||||||||||
| Facility fee basis points | 0.25% | |||||||||||
| 2017 Credit Agreement, Letter Of Credit [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Borrowing capacity under the credit facility | 60,000,000 | |||||||||||
| Maximum loan increase that may be requested | $ 100,000,000 | |||||||||||
| 2017 Credit Agreement Amendment And 2016 Term Loan Amendment [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Terms of the unsecured facility | On August 30, 2018, the Company entered into an amendment to the 2017 Credit Agreement (the "2017 Credit Agreement Amendment") and an amendment to the 2016 Term Loan (the "2016 Term Loan Amendment"). Each of the 2017 Credit Agreement Amendment and the 2016 Term Loan Amendment is effective as of June 30, 2018 and provides for the following material amendments to the terms of both the 2017 Credit Agreement and 2016 Term Loan:The unsecured debt ratio covenant has been modified with respect to the measurement of the unencumbered collateral pool of assets in the calculation of such ratio for the period commencing July 1, 2018 and continuing until December 31, 2019 to allow the Operating Partnership to utilize the "as-is" appraised value of the properties known as ‘Harborside Plaza I' and ‘Harborside Plaza V' properties located in Jersey City, NJ in such calculation; andA new covenant has been added that prohibits the Company from making any optional or voluntary payment, repayment, repurchase or redemption of any unsecured indebtedness of the Company (or any subsidiaries) that matures after January 25, 2022, at any time when any of the Total Leverage Ratio or the unsecured debt ratio covenants exceeds 60 percent (all as defined in the 2017 Credit Agreement and the 2016 Term Loan) or an appraisal is being used to determine the value of Harborside Plaza I and Harborside Plaza V for the unsecured debt ratio covenant. | |||||||||||
| Unsecured Term Loan [Member] | Unsecured Revolving Credit Facility [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Outstanding borrowings under the facility | $ 588,800,000 | 790,900,000 | ||||||||||
| 5.800% Senior Unsecured Notes, Due January 15, 2016 [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Loan balance | $ 200,000,000 | |||||||||||
| Loan maturity date | Jan. 15, 2016 | |||||||||||
| 2017 Term Loan [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Loan balance | $ 325,000,000 | |||||||||||
| Loan maturity date | Jan. 01, 2020 | |||||||||||
| Unamortized deferred financing costs | $ 700,000 | 1,700,000 | ||||||||||
| Loan extension period | 1 year | |||||||||||
| Interest rate swap | 1.6473% | |||||||||||
| Interest rate | 3.1973% | |||||||||||
| Borrowing capacity under the credit facility | $ 325,000,000 | |||||||||||
| Number of extension options | item | 2 | |||||||||||
| Terms of the unsecured facility | The terms of the 2017 Term Loan include: (1) a three-year term ending in January 2020, with two one-year extension options; (2) multiple draws of the term loan commitments may be made within 12 months of the effective date of the 2017 Credit Agreement up to an aggregate principal amount of $325 million (subject to increase as discussed below), with no requirement to be drawn in full; provided, that, if the Company does not borrow at least 50 percent of the initial term commitment from the term lenders (i.e. 50 percent of $325 million) on or before July 25, 2017, the amount of unused term loan commitments shall be reduced on such date so that, after giving effect to such reduction, the amount of unused term loan commitments is not greater than the outstanding term loans on such date; (3) an interest rate, based on the Operating Partnership's unsecured debt ratings from Moody's or S&P, or, at the Operating Partnership's option if it no longer maintains a debt rating from Moody's or S&P or such debt ratings fall below Baa3 and BBB-, based on a defined leverage ratio; and (4) a term commitment fee on any unused term loan commitment during the first 12 months after the effective date of the 2017 Credit Agreement at a rate of 0.25 percent per annum on the sum of the average daily unused portion of the aggregate term loan commitments. | |||||||||||
| Outstanding borrowings under the facility | $ 324,300,000 | 323,900,000 | ||||||||||
| Spread over LIBOR | 1.55% | |||||||||||
| Loan period | 3 years | |||||||||||
| Minimum percentage of initial borrowing | 50.00% | |||||||||||
| Term commitment fee percent | 0.25% | |||||||||||
| Incremental Commitments [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Maximum loan increase that may be requested | $ 350,000,000 | |||||||||||
| 2016 Term Loan [Member] | ||||||||||||
| Line of Credit Facility [Line Items] | ||||||||||||
| Unsecured term loan, net | $ 350,000,000 | |||||||||||
| Loan maturity date | Jan. 01, 2019 | |||||||||||
| Unamortized deferred financing costs | $ 400,000 | |||||||||||
| Interest rate | 3.28% | |||||||||||
| Credit facility maturity date | Jan. 01, 2020 | |||||||||||
| Number of extension options | item | 2 | |||||||||||
| Credit facility, extension period | 1 year | |||||||||||
| Terms of the unsecured facility | The terms of the 2016 Term Loan include certain restrictions and covenants which limit, among other things the incurrence of additional indebtedness, the incurrence of liens and the disposition of real estate properties (to the extent that: (i) such property dispositions cause the Company to default on any of the financial ratios of the term loan described below, or (ii) the property dispositions are completed while the Company is under an event of default under the term loan, unless, under certain circumstances, such disposition is being carried out to cure such default), and which require compliance with financial ratios relating to the maximum leverage ratio (60 percent), the maximum amount of secured indebtedness (40 percent), the minimum amount of fixed charge coverage (1.5 times), the maximum amount of unsecured indebtedness (60 percent), the minimum amount of unencumbered property interest coverage (2.0 times) and certain investment limitations (generally 15 percent of total capitalization). | |||||||||||
| Terms of dividend restriction | If an event of default has occurred and is continuing, the Company will not make any excess distributions except to enable the General Partner to continue to qualify as a REIT under the IRS Code. | |||||||||||
| Outstanding borrowings under the facility | $ 259,600,000 | $ 350,000,000 | ||||||||||
| Spread over LIBOR | 1.55% | |||||||||||
| Extension fee amount | $ 500,000 | |||||||||||
| Payment for borrowings | $ 90,000,000 | |||||||||||
| Gain on early termination | $ 1,300,000 | |||||||||||