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Derivative Financial Instruments - Forward Sales Commitments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Interest rate lock commitments | Other assets |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | $ 25,373 |  | $ 25,373 |  | $ 45,004
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 496 |  | 496 |  | 1,201
Interest rate lock commitments | Other liabilities |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | 172 |  | 172 |  | 118
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other liabilities | 3 |  | 3 |  | 1
Forward sales commitments | Other assets |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | 172 |  | 172 |  | 978
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 3 |  | 3 |  | 32
Forward sales commitments | Other liabilities |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | 42,043 |  | 42,043 |  | 84,964
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other liabilities | 1,361 |  | 1,361 |  | 2,662
Interest rate lock commitments and forward sales commitments | Designated as hedging instrument |  |  |  |  |
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income |  |  |  |  |
Net gains (losses) | (865) | $ (2,565) | (1,213) | $ (4,763) |
Interest rate lock commitments and forward sales commitments | Other assets | Designated as hedging instrument |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | 25,545 |  | 25,545 |  | 45,982
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 499 |  | 499 |  | 1,233
Interest rate lock commitments and forward sales commitments | Other liabilities | Designated as hedging instrument |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount | 42,215 |  | 42,215 |  | 85,082
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other liabilities | 1,364 |  | 1,364 |  | $ 2,663
Mortgage revenue | Interest rate lock commitments | Designated as hedging instrument |  |  |  |  |
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income |  |  |  |  |
Gross gains | 493 | 2,213 | 965 | 7,062 |
Mortgage revenue | Forward sales commitments | Designated as hedging instrument |  |  |  |  |
Gross gains and losses on derivative assets and liabilities recorded in Consolidated Statements of Income |  |  |  |  |
Gross (losses) | $ (1,358) | $ (4,778) | $ (2,178) | $ (11,825) |

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