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Commitments, Contingencies and Concentrations of Credit Risk (Details) - Summary of Financial Instruments - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | $ 948,799 | $ 1,036,854
Commercial Portfolio Segment [Member] | Supply Commitment [Member] |  |
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | 525,606 | 564,444
Home Equity Line of Credit [Member] |  |
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | 65,690 | 47,278
Commercial Real Estate Portfolio Segment [Member] | Supply Commitment [Member] |  |
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | 327,745 | 392,225
Standby Letters of Credit [Member] |  |
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | 28,738 | 32,155
Overdraft Protection Lines [Member] |  |
Supply Commitment [Line Items] |  |
Off-balance sheet commitements | $ 1,020 | $ 752

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