Regulatory Capital (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual, amount	$ 791,701	$ 776,390
Total capital (to risk-weighted assets), actual, ratio	0.1441	0.1437
Total capital (to risk-weighted assets), for capital adequacy purposes, amount	$ 439,335	$ 432,172
Total capital (to risk-weighted assets), For capital adequacy purposes, ratio	0.0800	0.0800
Total capital (to risk-weighted assets), required for capital1 adequacy purposes with capital buffer, amount	$ 576,627	$ 567,226
Total capital (to risk-weighted assets), required for capital1 adequacy purposes with capital buffer, ratio	10.50%	10.50%
Tier 1 capital (to average assets), actual, amount	$ 742,175	$ 729,835
Tier 1 capital (to average assets), actual, ratio	0.1351	0.1351
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 329,501	$ 324,129
Tier 1 capital (to average assets), for capital adequacy purpose, ratio	0.0600	0.0600
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, amount	$ 466,794	$ 459,183
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, ratio	8.50%	8.50%
Common equity tier 1 capital, actual amount	$ 621,647	$ 609,630
Common equity tier 1 capital, actual ratio	0.1132	0.1128
Common equity tier 1 capital, for capital adequacy purposes, amount	$ 247,126	$ 243,097
Common equity tier 1 capital, for capital adequacy purpose, ratio	4.50%	4.50%
Common equity tier 1 capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, amount	$ 384,418	$ 378,151
Common equity tier 1 capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, ratio	7.00%	7.00%
Tier 1 capital (to average assets), actual, amount	$ 742,175	$ 729,835
Tier 1 capital (to average assets), actual, ratio	0.1006	0.1003
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 295,057	$ 291,122
Tier 1 capital (to average assets), for capital adequacy purpose, ratio	0.0400	0.0400
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, amount	$ 295,057	$ 291,122
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, ratio	4.00%	4.00%
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual, amount	$ 736,730	$ 726,339
Total capital (to risk-weighted assets), actual, ratio	0.1356	0.1359
Total capital (to risk-weighted assets), for capital adequacy purposes, amount	$ 434,541	$ 427,456
Total capital (to risk-weighted assets), For capital adequacy purposes, ratio	0.0800	0.0800
Total capital (to risk-weighted assets), required for capital1 adequacy purposes with capital buffer, amount	$ 570,335	$ 561,036
Total capital (to risk-weighted assets), required for capital1 adequacy purposes with capital buffer, ratio	10.50%	10.50%
Total capital (to risk-weighted assets), for well capitalized purpose, amount	$ 543,176	$ 534,320
Total capital (to risk-weighted assets), for well capitalized purpose, ratio	0.1000	0.1000
Tier 1 capital (to average assets), actual, amount	$ 687,204	$ 679,784
Tier 1 capital (to average assets), actual, ratio	0.1265	0.1272
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 325,906	$ 320,592
Tier 1 capital (to average assets), for capital adequacy purpose, ratio	0.0600	0.0600
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, amount	$ 461,700	$ 454,172
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, ratio	8.50%	8.50%
Tier 1 capital (to average assets), for well capitalized purpose, amount	$ 434,541	$ 427,456
Tier 1 capital (to average assets), for well capitalized purposes, ratio	0.0800	0.0800
Common equity tier 1 capital, actual amount	$ 687,241	$ 679,784
Common equity tier 1 capital, actual ratio	0.1265	0.1272
Common equity tier 1 capital, for capital adequacy purposes, amount	$ 244,429	$ 240,444
Common equity tier 1 capital, for capital adequacy purpose, ratio	4.50%	4.50%
Common equity tier 1 capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, amount	$ 380,223	$ 374,024
Common equity tier 1 capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, ratio	7.00%	7.00%
Common equity tier 1 capital, for well capitalized purpose, amount	$ 353,065	$ 347,308
Common equity tier 1 capital, for well capitalized purposes, ratio	6.50%	6.50%
Tier 1 capital (to average assets), actual, amount	$ 687,204	$ 679,784
Tier 1 capital (to average assets), actual, ratio	0.0886	0.0889
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 310,125	$ 305,996
Tier 1 capital (to average assets), for capital adequacy purpose, ratio	0.0400	0.0400
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, amount	$ 310,125	$ 305,999
Tier 1 capital (to average assets), required for capital1 adequacy purposes with capital buffer, ratio	4.00%	4.00%
Tier 1 capital (to average assets), for well capitalized purpose, amount	$ 387,657	$ 382,495
Tier 1 capital (to average assets), for well capitalized purposes, ratio	0.0500	0.0500