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Lease Intangibles - Schedule of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Amortizable Intangible Assets |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 173,069 | $ 103,988
Amortizable Intangible Assets, Accumulated Amortization | (58,485) | (51,395)
Amortizable Intangible Assets, Net Carrying Amount | 114,584 | 52,593
Amortizable Intangible Liabilities |  |
Amortizable Intangible Liabilities, Gross Carrying Amount | (137,032) | (65,607)
Amortizable Intangible Liabilities, Accumulated Amortization | 32,004 | 33,799
Amortizable Intangible Liabilities, Net Carrying Amount | (105,028) | (31,808)
Below market rents, acquired | $ 73,000 |
Below market rents acquired, weighted average useful life | 15 years 9 months 18 days |
In-place lease and tenant relationships |  |
Amortizable Intangible Assets |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 156,420 | 84,443
Amortizable Intangible Assets, Accumulated Amortization | (47,827) | (37,996)
Amortizable Intangible Assets, Net Carrying Amount | 108,593 | 46,447
Intangible assets acquired | $ 62,900 |
Acquired intangible assets, weighted average useful life | 7 years 2 months 12 days |
Above-market rent |  |
Amortizable Intangible Assets |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 16,649 | 19,545
Amortizable Intangible Assets, Accumulated Amortization | (10,658) | (13,399)
Amortizable Intangible Assets, Net Carrying Amount | 5,991 | $ 6,146
Intangible assets acquired | $ 700 |
Acquired intangible assets, weighted average useful life | 5 years 9 months 18 days |

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