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Outstanding Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Credit Commitments and Contingencies |  |
Total commitments | $ 1,999,155 | $ 2,016,207
Commitments to extend credit |  |
Credit Commitments and Contingencies |  |
Total commitments | 1,969,861 | 1,983,655
Standby letters of credit |  |
Credit Commitments and Contingencies |  |
Total commitments | $ 29,294 | $ 32,552

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