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Derivative Financial Instruments - Schedule of Derivatives as Reflected on Balance Sheet (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Fair value of asset derivatives | $ 57 | $ 1,818
Fair value of asset derivatives |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of asset derivatives | 57 | 1,818
Fair value of asset derivatives | Interest rate swap options - floor income hedges |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of asset derivatives | 0 | 1,465
Fair value of asset derivatives | Interest rate caps |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of asset derivatives | 57 | 353
Fair value of liability derivatives |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of liability derivatives | 0 | 0
Fair value of liability derivatives | Interest rate swap options - floor income hedges |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of liability derivatives | 0 | 0
Fair value of liability derivatives | Interest rate caps |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of liability derivatives | $ 0 | $ 0

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