Regulatory Capital (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual, amount	$ 793,567	$ 786,436
Total capital (to risk-weighted assets), actual, ratio	0.1382	0.1411
Total capital (to risk-weighted assets), for capital adequacy purposes, amount	$ 459,485	$ 446,000
Total capital (to risk-weighted assets), For capital adequacy purposes, ratio	0.0800	0.0800
Total capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, amount	$ 603,074	$ 585,374
Total capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, ratio	10.50%	10.50%
Tier 1 capital (to average assets), actual, amount	$ 742,430	$ 735,792
Tier 1 capital (to average assets), actual, ratio	0.1293	0.1320
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 344,614	$ 334,500
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	$ 488,203	$ 473,874
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	$ 625,700	$ 619,153
Common equity tier 1 capital, actual ratio	0.1089	0.1111
Common equity tier 1 capital, for capital adequacy purposes, amount	$ 258,460	$ 250,875
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	$ 402,049	$ 390,250
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	$ 742,430	$ 735,792
Tier 1 capital (to average assets), actual, ratio	0.0968	0.0936
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 306,716	$ 314,306
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	$ 306,716	$ 314,306
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	$ 721,018	$ 714,402
Total capital (to risk-weighted assets), actual, ratio	0.1259	0.1287
Total capital (to risk-weighted assets), for capital adequacy purposes, amount	$ 458,163	$ 444,147
Total capital (to risk-weighted assets), For capital adequacy purposes, ratio	0.0800	0.0800
Total capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, amount	$ 601,338	$ 582,943
Total capital (to risk-weighted assets), required for capital adequacy purposes with capital buffer, ratio	10.50%	10.50%
Total capital (to risk-weighted assets), for well capitalized purpose, amount	$ 572,703	$ 555,184
Total capital (to risk-weighted assets), for well capitalized purpose, ratio	0.1000	0.1000
Tier 1 capital (to average assets), actual, amount	$ 669,881	$ 663,758
Tier 1 capital (to average assets), actual, ratio	0.1170	0.1196
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 343,622	$ 333,111
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	$ 486,798	$ 471,907
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	$ 458,163	$ 444,147
Tier 1 capital (to average assets), for well capitalized purposes, ratio	0.0800	0.0800
Common equity tier 1 capital, actual amount	$ 669,881	$ 663,758
Common equity tier 1 capital, actual ratio	0.1170	0.1196
Common equity tier 1 capital, for capital adequacy purposes, amount	$ 257,716	$ 249,833
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	$ 400,892	$ 388,629
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	$ 372,257	$ 360,870
Common equity tier 1 capital, for well capitalized purposes, ratio	6.50%	6.50%
Tier 1 capital (to average assets), actual, amount	$ 669,881	$ 663,758
Tier 1 capital (to average assets), actual, ratio	0.0863	0.0841
Tier 1 capital (to average assets), for capital adequacy purposes, amount	$ 310,592	$ 315,550
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	$ 310,592	$ 315,550
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	$ 388,240	$ 394,438
Tier 1 capital (to average assets), for well capitalized purposes, ratio	0.0500	0.0500