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Commitments - Summary of Financial Instrument Commitments (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
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