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Off-Balance-Sheet Financial Instruments and Concentrations of Credit Risk (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Off-Balance-Sheet Financial instruments | At December 31, 2020 and 2019, the Bank had the following off-balance-sheet financial instruments, whose contract amounts represent credit risk:
As of December 31, | 2020 |  | 2019
Unused lines, collateralized by residential real estate | $ | 89,852,000 |  |  | $ | 81,193,000 |
Other unused commitments | 102,963,000 |  |  | 90,186,000 |
Standby letters of credit | 4,415,000 |  |  | 4,496,000 |
Commitments to extend credit | 34,526,000 |  |  | 19,702,000 |
Total | $ | 231,756,000 |  |  | $ | 195,577,000 |

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