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Fair Value Measurements - Mortgage Servicing Rights - Level 3 (Details) - Recurring - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Mortgage Servicing Rights |  |
Fair value of assets |  |
Balance at beginning of period | $ 2,899 | $ 2,659
Total gains or (losses) (realized/unrealized): |  |
Included in earnings | (52) | 186
Included in other comprehensive income | 0 | 0
Purchases | 0 | 0
Sales | 0 | 0
Issues | 38 | 61
Settlements | 0 | 0
Balance at end of period | 2,885 | 2,906
Interest Rate Lock Commitments |  |
Fair value of liabilities |  |
Balance at beginning of period | 2 | 286
Total gains or (losses) (realized/unrealized): |  |
Included in earnings | (31) | (22)
Included in other comprehensive income | 0 | 0
Purchases | 0 | 0
Sales | (125) | (474)
Issues | 197 | 144
Settlements | 0 | 0
Balance at end of period | $ 43 | $ (66)

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