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Intangible Assets and Below Market Lease Liabilities - Scheduled Future Amortization (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Scheduled future amortization of intangible assets [Abstract] |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 195,068 | $ 200,679
Scheduled future amortization of below market lease liabilities [Abstract] |  |
Total scheduled future amortization of acquisition-related below market lease liabilities | (28,714) | $ (31,733)
Deferred Leasing Costs and Acquisition-Related Intangible Assets (in Depreciation and Amortization) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
July 1 through December 31, 2018 | 18,504 |
2019 | 32,788 |
2020 | 28,231 |
2021 | 23,756 |
2022 | 19,520 |
Thereafter | 54,783 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 177,582 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 7 years 6 months |
Lease Incentives (in Rental and Other Revenues) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
July 1 through December 31, 2018 | $ 866 |
2019 | 1,578 |
2020 | 1,311 |
2021 | 1,086 |
2022 | 872 |
Thereafter | 4,907 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 10,620 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 10 years |
Acquisition-Related Intangible Assets (in Rental and Other Revenues) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
July 1 through December 31, 2018 | $ 784 |
2019 | 1,273 |
2020 | 959 |
2021 | 632 |
2022 | 462 |
Thereafter | 1,408 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 5,518 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 6 years 6 months |
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
July 1 through December 31, 2018 | $ 277 |
2019 | 553 |
2020 | 518 |
2021 | 0 |
2022 | 0 |
Thereafter | 0 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 1,348 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 2 years 6 months |
Acquisition-Related Below Market Lease Liabilities (in Rental and Other Revenues) [Member] |  |
Scheduled future amortization of below market lease liabilities [Abstract] |  |
July 1 through December 31, 2018 | $ (2,918) |
2019 | (5,446) |
2020 | (5,186) |
2021 | (4,377) |
2022 | (3,264) |
Thereafter | (7,523) |
Total scheduled future amortization of acquisition-related below market lease liabilities | $ (28,714) |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived below market lease liabilities, average useful life (in years) | 6 years 2 months 12 days |

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