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Derivative Instruments and Hedge Activities - Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020
Derivative [Line Items] |  |  |
Amount of Loss Recognized in OCI | $ 651 | $ 1,606 |
Interest Rate Swap |  |  |
Derivative [Line Items] |  |  |
Amount of Loss Recognized in OCI |  | 1,606 |
Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense |  | (71) | (64)
Amount of Gain (Loss) Recognized in Other Non-Interest Income |  |  |

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