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Real Estate and Lease Intangibles - Summary of the Effect of the Amortization for Above and Below Market Ground and Retail Lease Intangibles (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Total amortization of above/below market lease intangibles | $ (1,012) | $ (858) | $ (2,729) | $ (2,566)
Ground Lease [Member] | Property and Maintenance [Member] |  |  |  |
Total amortization of above/below market lease intangibles | (1,092) | (1,080) | (3,253) | (3,241)
Retail Lease [Member] | Rental Income [Member] |  |  |  |
Total amortization of above/below market lease intangibles | $ 80 | $ 222 | $ 524 | $ 675

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- Definition Amount of non-cash amortization of intangible asset (liability) for above and below market leases. + References No definition available. + Details
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