Regulatory Capital Requirements - Schedule of Regulatory Capital Requirements (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital to RWA, actual, amount	$ 464,515	$ 435,328
Total capital to RWA, actual, ratio	0.1349	0.1373
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 275,536	$ 253,610
Total capital to RWA, minimum capacity for adequacy purposes	0.0800	0.0800
Tier 1 Capital to RWA, actual, amount	$ 362,210	$ 336,577
Tier 1 capital to RWA, actual, ratio	0.1052	0.1062
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 206,652	$ 190,208
Tier 1 capital to RWA, minimum capacity for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 capital to AA leverage ratio, actual, amount	$ 362,210	$ 336,577
Tier 1 capital to AA leverage ratio, actual, ratio	0.0789	0.0756
Tier 1 capital to AA leverage ratio, minimum capital for capital adequacy purposes, amount	$ 183,517	$ 177,978
Tier 1 capital to AA leverage ratio, minimum capacity for capital adequacy purposes, ratio	0.0400	0.0400
Common equity tier 1 capital to RWA, actual, amount	$ 362,210	$ 336,577
Common equity tier 1 capital to RWA, actual, ratio	10.52%	10.62%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 154,989	$ 142,656
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, ratio	4.50%	4.50%
Basel III additional capital conservation buffer at full phase-in	2.50%	2.50%
The Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital to RWA, actual, amount	$ 464,330	$ 434,430
Total capital to RWA, actual, ratio	0.1348	0.1370
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 275,535	$ 253,610
Total capital to RWA, minimum capacity for adequacy purposes	0.0800	0.0800
Total capital to RWA, minimum capital to be well capitalized, amount	$ 344,419	$ 317,013
Total Capital to RWA, minimum capital to be well capitalized, ratio	0.1000	0.1000
Tier 1 Capital to RWA, actual, amount	$ 421,127	$ 394,658
Tier 1 capital to RWA, actual, ratio	0.1223	0.1245
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 206,652	$ 190,208
Tier 1 capital to RWA, minimum capacity for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 capital to RWA, minimum capital to be well capitalized, amount	$ 275,535	$ 253,610
Tier 1 capital to RWA, minimum capital to be well capitalized, ratio	0.0800	0.0800
Tier 1 capital to AA leverage ratio, actual, amount	$ 421,127	$ 394,658
Tier 1 capital to AA leverage ratio, actual, ratio	0.0918	0.0887
Tier 1 capital to AA leverage ratio, minimum capital for capital adequacy purposes, amount	$ 183,517	$ 177,978
Tier 1 capital to AA leverage ratio, minimum capacity for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 capital to AA leverage ratio, minimum capital to be well capitalized, amount	$ 229,396	$ 222,473
Tier 1 capital to AA leverage ratio, minimum capital to be well capitalized, ratio	0.0500	0.0500
Common equity tier 1 capital to RWA, actual, amount	$ 421,127	$ 394,658
Common equity tier 1 capital to RWA, actual, ratio	12.23%	12.45%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 154,989	$ 142,656
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, ratio	4.50%	4.50%
Common equity tier 1 capital to RWA, minimum capital to be well capitalized, amount	$ 223,873	$ 206,058
Common equity tier 1 capital to RWA, minimum capital to be well capitalized, ratio	6.50%	6.50%