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Derivatives and Hedging - Narrative (Details) - USD ($) $ in Thousands | Nov. 08, 2018 | Jan. 08, 2018
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2021 Swap 1 |  |
Derivative [Line Items] |  |
Notional amount |  | $ 144
Fixed interest rate | 0.74% | 0.74%
2021 Swap 2 |  |
Derivative [Line Items] |  |
Notional amount | $ 216 |

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