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Organization (Details) ft² in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2018 joint_venture Assets | Mar. 31, 2018 Properties | Mar. 31, 2018 ft² | Mar. 31, 2018 | Dec. 31, 2017 ft² Properties wholly_owned | Mar. 31, 2017 ft² joint_venture Properties
Entity Information [Line Items] |  |  |  |  |  |
Number of retail properties |  | 14 |  | 2 | 15 |
Square Feet |  |  | 3.0 |  | 3.2 | 0.3
Number of operating real estate joint ventures | joint_venture | 2 |  |  |  |  | 2
Corporate Joint Venture |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |
Number of retail properties | joint_venture | 1 |  |  |  |  |
Square Feet |  |  | 3.0 |  |  |
Number of managed assets | Assets | 14 |  |  |  |  |
Assets Leased to Others |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |
Number of retail properties | Properties |  | 1 |  |  |  |
Square footage occupied |  |  |  |  |  | 69.90%
Retail |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |
Number of retail properties | wholly_owned |  |  |  |  | 71 |
Square Feet |  |  | 11.2 |  | 12.4 | 12.7
Retail | Assets Leased to Others |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |
Square footage occupied |  |  |  | 93.60% | 94.20% | 93.30%
Retail |  |  |  |  |  |
Entity Information [Line Items] |  |  |  |  |  |
Number of retail properties | Properties |  | 67 |  |  |  | 73

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