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Intangible Assets and Below Market Lease Liabilities - Scheduled Future Amortization (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015
Scheduled future amortization of intangible assets [Abstract] |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 218,976 | $ 231,765
Scheduled future amortization of below market lease liabilities [Abstract] |  |
Total scheduled future amortization of acquisition-related below market lease liabilities | (40,037) | $ (45,903)
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1 through December 31, 2016 | 11,797 |
2017 | 41,426 |
2018 | 34,194 |
2019 | 28,606 |
2020 | 23,983 |
Thereafter | 58,905 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 198,911 |
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 8 months 12 days |
Lease Incentives [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1 through December 31, 2016 | $ 358 |
2017 | 1,399 |
2018 | 1,294 |
2019 | 1,080 |
2020 | 805 |
Thereafter | 2,544 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 7,480 |
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 4 months 24 days |
Acquisition-Related Intangible Assets (in Rental and Other Revenues) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1 through December 31, 2016 | $ 917 |
2017 | 2,657 |
2018 | 1,713 |
2019 | 1,322 |
2020 | 1,002 |
Thereafter | 2,653 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 10,264 |
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 2 months 12 days |
Acquired finite-lived intangible assets, average useful life (in years) | 9 years 9 months 18 days |
Acquisition-Related Intangible Assets (amortized in Depreciation and Amortization) [Member] |  |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Acquired finite-lived intangible assets, average useful life (in years) | 10 years 2 months 12 days |
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1 through December 31, 2016 | $ 137 |
2017 | 553 |
2018 | 553 |
2019 | 553 |
2020 | 525 |
Thereafter | 0 |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | $ 2,321 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 4 years 2 months 12 days |
Acquisition-Related Below Market Lease Liabilities [Member] |  |
Scheduled future amortization of below market lease liabilities [Abstract] |  |
October 1 through December 31, 2016 | $ (1,737) |
2017 | (6,231) |
2018 | (6,022) |
2019 | (5,549) |
2020 | (5,223) |
Thereafter | (15,275) |
Total scheduled future amortization of acquisition-related below market lease liabilities | $ (40,037) |
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) | 7 years 6 months |
Assumed finite-lived below market lease liabilities, average useful life (in years) | 11 years 2 months 12 days |

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