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Commitments - Summary of Financial Instrument Commitments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Fixed Letters of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | $ 840 | $ 685
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 840 | 685
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 384 | 329
Fixed Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 456 | 356
Fixed Letters of Credit [Member] | Unused lines of Credit [Member] |  |
Financial instrument commitments |  |
Loan commitments | 84,225 | 88,883
Variable Letters of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 32,448 | 13,635
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 32,381 | 13,568
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 17,474 | 9,051
Variable Letters of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 14,907 | 4,517
Variable Letters of Credit [Member] | Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 67 | 67
Variable Letters of Credit [Member] | Unused lines of Credit [Member] |  |
Financial instrument commitments |  |
Loan commitments | 895,665 | 316,298
Letter of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 33,288 | 14,320
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 33,221 | 14,253
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Financial Standby Letter of Credit [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 17,858 | 9,380
Letter of Credit [Member] | Commitments to Extend Credit to Borrowers [Member] | Performance Guarantee [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 15,363 | 4,873
Letter of Credit [Member] | Commitments to Extend Credit Nonborrowers [Member] | Performance Guarantee [Member] |  |
Financial instrument commitments |  |
Financial instrument commitments | 67 | 67
Letter of Credit [Member] | Unused lines of Credit [Member] |  |
Financial instrument commitments |  |
Loan commitments | $ 979,890 | $ 405,181

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