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Commitments and Contingencies - Additional Information (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 USD ($) ft² ShoppingCenter | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) ft² ShoppingCenter | Jun. 30, 2017 USD ($) | Jul. 25, 2018 Store | Dec. 31, 2017 USD ($)
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Property insurance receivable | $ 49,202 |  | $ 49,202 |  |  | $ 58,583
Insurance proceeds related to business interruption insurance claims | $ 3,100 | $ 0 | $ 5,100 | $ 0 |  |
Puerto Rico [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of properties owned | ShoppingCenter | 12 |  | 12 |  |  |
Gross leasable area of properties owned | ft² | 4,400,000 |  | 4,400,000 |  |  |
Gross leasable area of anchor spaces | ft² | 25,000 |  | 25,000 |  |  |
Insurance Policy Limit |  |  | $ 330,000 |  |  |
Hurricane property and impairment loss |  |  | $ 6,000 |  |  |
Puerto Rico [Member] | Loss from Catastrophes |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of assets sustained varying degrees of damage | ShoppingCenter | 11 |  | 11 |  |  |
Estimated net book value of the property damage written off | $ 78,800 |  | $ 78,800 |  |  |
Property insurance receivable | 49,200 |  | $ 49,200 |  |  |
Received property damage portion of insurance claim | 20,200 |  |  |  |  |
Business interruption insurance coverage period after restoration |  |  | 365 days |  |  |
Rental revenues lost and not recognized | 2,800 |  | $ 6,600 |  |  |
Puerto Rico [Member] | Loss from Catastrophes | Business Interruption Income [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Insurance proceeds related to business interruption insurance claims | $ 3,100 |  | $ 5,100 |  |  |
Puerto Rico [Member] | Loss from Catastrophes | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Percentage of tenants opened in anchor space properties post hurricanes |  |  |  |  | 82.00% |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 27 |
Percentage of leased gross leasable area opened in anchor space properties post hurricanes |  |  |  |  | 86.00% |
Puerto Rico [Member] | Loss from Catastrophes | Plaza Palma Real [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of properties owned that was severely damaged | ShoppingCenter | 1 |  | 1 |  |  |
Gross leasable area of properties owned that was severely damaged | ft² | 400,000 |  | 400,000 |  |  |
Puerto Rico [Member] | Loss from Catastrophes | Plaza Palma Real [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Percentage of leased gross leasable area opened in anchor space properties post hurricanes |  |  |  |  | 82.00% |
Puerto Rico [Member] | Loss from Catastrophes | Sam's Club [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 1 |
Puerto Rico [Member] | Loss from Catastrophes | Home Depot [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 2 |
Puerto Rico [Member] | Loss from Catastrophes | Sears/Kmart [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 3 |
Puerto Rico [Member] | Loss from Catastrophes | Other Grocery Stores [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 5 |
Puerto Rico [Member] | Loss from Catastrophes | Walmart [Member] | Subsequent Event [Member] |  |  |  |  |  |
Contingencies And Commitments [Line Items] |  |  |  |  |  |
Number of stores opened in anchor space properties post hurricanes | Store |  |  |  |  | 7 |

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