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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jan. 01, 2020 | Mar. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Allowance for credit loss impact |  | $ 5,541
Unfunded commitments to fund tenant loans |  | $ 4,800
Cumulative Effect, Period Of Adoption, Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Allowance for credit loss impact | $ 5,500 |

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