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Commitments and Contingencies (Litigation and contingencies) (Details) ft² in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2016 USD ($) | Feb. 28, 2014 fire | Dec. 31, 2021 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jan. 10, 2019 ft² | Apr. 04, 2017 ft² | Dec. 31, 2001 a
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Mortgages payable, carrying value |  |  |  | $ 1,161,534 | $ 1,240,222 |  |  |  |
Property rentals |  |  |  | 152,795 | 152,857 | $ 151,444 |  |  |
Straight line rent adjustments |  |  |  | (5,870) | (4,250) | (2,347) |  |  |
Unamortized deferred leasing costs |  |  |  | 40,669 | 45,790 |  |  |  |
Standby letters of credit, outstanding |  |  |  | 1,030 |  |  |  |  |
Proceeds from legal settlements |  |  |  | $ 165 | $ 396 | $ 825 |  |  |
Paramus | Ikea | Tenant Occupant |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Area of land | a |  |  |  |  |  |  |  |  | 30.3
Debt instrument, interest rate, stated percentage |  |  |  | 4.72% |  |  |  |  |
Triple-net rent, annual amount |  |  |  | $ 700 |  |  |  |  |
Maturity date |  |  |  | Oct. 01, 2021 |  |  |  |  |
Mortgages payable, carrying value |  |  |  | $ 68,000 |  |  |  |  |
Paramus | Ikea | Forecast | Tenant Occupant |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Property purchase option exercisable by lessee |  |  | $ 75,000 |  |  |  |  |  |
Purchase option not exercised amount included in triple net rent over remainder of lease |  |  | 68,000 |  |  |  |  |  |
Purchase option exercised, net cash proceeds from sale of land |  |  | 7,000 |  |  |  |  |  |
Gain (loss) on disposition of real estate, discontinued operations |  |  | $ 60,000 |  |  |  |  |  |
Lease term range as Lessor |  |  | 20 years |  |  |  |  |  |
Loan amortization period |  |  | 20 years |  |  |  |  |  |
Rego Park I | Sears |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Number of fires | fire |  | 2 |  |  |  |  |  |  |
Area of property (in square feet) | ft² |  |  |  |  |  |  |  | 195 |
Property rentals |  |  |  | 10,300 |  |  |  |  |
Straight line rent adjustments |  |  |  | 2,973 |  |  |  |  |
Unamortized deferred leasing costs |  |  |  | $ 312 |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Lease term range as Lessor |  |  |  | 5 years |  |  |  |  |
Minimum | Rego Park I | Sears |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  |  |  | $ 4,000 |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Lease term range as Lessor |  |  |  | 25 years |  |  |  |  |
Estimated Future Damages | Rego Park I | Sears |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Loss contingency, damages sought, value | $ 650 |  |  |  |  |  |  |  |
Estimated Future Damages | Minimum | Rego Park I | Sears |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  |  |  | $ 25,000 |  |  |  |  |
Estimated Future Damages | Maximum | Rego Park I | Sears |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  | $ 650 |  |  |  |  |
Subsequent Event | Rego Park II | Kohl's |  |  |  |  |  |  |  |  |
Commitments And Contingencies Disclosure |  |  |  |  |  |  |  |  |
Area of property (in square feet) | ft² |  |  |  |  |  |  | 133 |  |

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- Definition In the event the tenant does not exercise its purchase option, the period over which the tenant's debt service portion of its rent must be sufficient to fully amortize the loan on the property + References No definition available. + Details
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- Definition Lease with purchase option to be exercised by lessee. + References No definition available. + Details
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- Definition The amount to be amortized over the remainder of the lease term if the purchase option is not exercised. + References No definition available. + Details
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- Definition This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=77902619&loc=d3e40246-112709 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=77902619&loc=d3e40588-112709 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77913719&loc=d3e40879-112712 + Details
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