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Lease Intangibles - Schedule of Intangible Assets and Liabilities Included in Other Assets and Other Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | $ 234,190 | $ 210,607
Amortizable Intangible Assets, Accumulated Amortization | (118,251) | (83,036)
Amortizable Intangible Assets, Net Carrying Amount | 115,939 | 127,571
Amortizable Intangible Liabilities |  |
Amortizable Intangible Liabilities, Gross Carrying Amount | (152,188) | (147,232)
Amortizable Intangible Liabilities, Accumulated Amortization | 57,721 | 43,391
Amortizable Intangible Liabilities, Net Carrying Amount | (94,467) | (103,841)
Above-market Ground Lease, Gross | (671) | (671)
Above-market Ground Lease, Accumulated Amortization | 93 | 34
Above-market Ground Lease, Net | (578) | (637)
Finite-Lived Intangible Liabilities, Gross | (152,859) | (147,903)
Finite-Lived Intangible Liabilities, Accumulated Amortization | 57,814 | 43,425
Finite-Lived Intangible Liabilities, Net | (95,045) | (104,478)
In-place lease intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | 216,021 | 193,821
Amortizable Intangible Assets, Accumulated Amortization | (105,972) | (72,749)
Amortizable Intangible Assets, Net Carrying Amount | 110,049 | 121,072
Amortizable Intangible Liabilities |  |
Amortizable Intangible Liabilities, Net Carrying Amount | (88,577) |
Above-market rent |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Intangible Assets, Gross Carrying Amount | 18,169 | 16,786
Amortizable Intangible Assets, Accumulated Amortization | (12,279) | (10,287)
Amortizable Intangible Assets, Net Carrying Amount | $ 5,890 | $ 6,499

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