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Related Party Transactions Related Party Transactions - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Related Party Transaction [Line Items] |  |  |
Interest expense, related party | $ 2,211 | $ 2,272 |
Due from affiliates | 80,195 |  | $ 68,227
Related parties note receivable, RED Consolidated Holdings, LLC |  |  |
Related Party Transaction [Line Items] |  |  |
Due from affiliates | $ 5,397 |  | 5,593
Note receivable, interest rate (percent) | 5.25% |  |
Interest income, related party | $ 70 | 117 |
Northwestern Mutual Life (NML) |  |  |
Related Party Transaction [Line Items] |  |  |
Interest expense payable, related party | 732 |  | 736
Unconsolidated Joint Ventures |  |  |
Related Party Transaction [Line Items] |  |  |
Due from affiliates | 4,745 |  |
Due to affiliates |  |  | (6,809)
Affiliated Entity | Notes Receivable | Fashion Outlets of San Francisco |  |  |
Related Party Transaction [Line Items] |  |  |
Interest income, related party | 611 | $ 521 |
Note receivable | $ 70,053 |  | $ 69,443
Affiliated Entity | Notes Receivable | LIBOR | Fashion Outlets of San Francisco |  |  |
Related Party Transaction [Line Items] |  |  |
Note receivable, interest rate (percent) | 2.00% |  |

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