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Intangible Assets and Below Market Lease Liabilities - Scheduled Future Amortization (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Scheduled future amortization of intangible assets [Abstract] |  |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 255,849 | $ 228,768
Deferred Financing Costs [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1, 2015 through December 31, 2015 | 1,049 |
2016 | 3,252 |
2017 | 2,711 |
2018 | 1,531 |
2019 | 1,123 |
Thereafter | 1,363 |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 11,029 | 11,525
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 |
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1, 2015 through December 31, 2015 | $ 12,976 |
2016 | 45,955 |
2017 | 38,353 |
2018 | 31,244 |
2019 | 25,530 |
Thereafter | 65,865 |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 219,923 |
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 |
Lease Incentives [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1, 2015 through December 31, 2015 | $ 353 |
2016 | 1,298 |
2017 | 1,197 |
2018 | 1,091 |
2019 | 898 |
Thereafter | 2,845 |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 7,682 |
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 11 months |
Acquisition-Related Intangible Assets (in Rental and Other Revenues) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1, 2015 through December 31, 2015 | $ 1,111 |
2016 | 3,884 |
2017 | 2,731 |
2018 | 1,752 |
2019 | 1,307 |
Thereafter | 3,553 |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 14,338 |
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 1 month |
Acquired finite-lived intangible assets, weighted average useful life (in years) | 4 years 11 months |
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, weighted average useful life (in years) | 5 years 6 months |
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member] |  |
Scheduled future amortization of intangible assets [Abstract] |  |
October 1, 2015 through December 31, 2015 | $ 132 |
2016 | 553 |
2017 | 553 |
2018 | 553 |
2019 | 553 |
Thereafter | 533 |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | $ 2,877 |
Weighted average remaining amortization periods for intangible assets and below market lease liabilities [Abstract] |  |
Finite-lived intangible assets, average useful life (in years) | 5 years 2 months |
Acquisition-Related Below Market Lease Liabilities [Member] |  |
Scheduled future amortization of below market lease liabilities [Abstract] |  |
October 1, 2015 through December 31, 2015 | $ (1,888) |
2016 | (6,997) |
2017 | (6,653) |
2018 | (6,216) |
2019 | (5,740) |
Thereafter | (20,342) |
Total scheduled future amortization of acquisition-related below market lease liabilities | $ (47,836) | $ (42,235)
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) | 8 years 1 month |
Assumed finite-lived below market lease liabilities, weighted average useful life (in years) | 9 years 8 months |

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