Regulatory Capital Requirements - Schedule of Regulatory Capital Requirements (Details) $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital to RWA, actual, amount	$ 444,858	$ 435,328
Total capital to RWA, actual, ratio	0.1372	0.1373
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 259,367	$ 253,610
Total capital to RWA, minimum capacity for adequacy purposes	0.0800	0.0800
Tier 1 Capital to RWA, actual, amount	$ 345,183	$ 336,577
Tier 1 capital to RWA, actual, ratio	0.1065	0.1062
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 194,526	$ 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	$ 345,183	$ 336,577
Tier 1 capital to AA leverage ratio, actual, ratio	0.0783	0.0756
Tier 1 capital to AA leverage ratio, minimum capital for capital adequacy purposes, amount	$ 176,248	$ 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	$ 345,183	$ 336,577
Common equity tier 1 capital to RWA, actual, ratio	10.65%	10.62%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 145,894	$ 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	$ 445,265	$ 434,430
Total capital to RWA, actual, ratio	0.1373	0.1370
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 259,367	$ 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	$ 324,209	$ 317,013
Total Capital to RWA, minimum capital to be well capitalized, ratio	0.1000	0.1000
Tier 1 Capital to RWA, actual, amount	$ 404,599	$ 394,658
Tier 1 capital to RWA, actual, ratio	0.1248	0.1245
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 194,526	$ 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	$ 259,367	$ 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	$ 404,599	$ 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	$ 176,248	$ 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	$ 220,310	$ 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	$ 404,599	$ 394,658
Common equity tier 1 capital to RWA, actual, ratio	12.48%	12.45%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 145,894	$ 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	$ 210,736	$ 206,058
Common equity tier 1 capital to RWA, minimum capital to be well capitalized, ratio	6.50%	6.50%