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Regulatory Capital - Summary of Regulatory Capital Requirement (Details)
$ in Thousands
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital (to risk-weighted assets), Actual, Amount $ 776,390 $ 708,198
Total capital (to risk-weighted assets), Actual, Ratio 0.1437 0.1571
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount $ 432,172 $ 360,737
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 $ 567,226 $ 473,468
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 $ 729,835 $ 661,729
Tier 1 capital (to average assets), Actual, Ratio 0.1351 0.1468
Tier 1 capital (to average assets), For capital adequacy purposes, Amount $ 324,129 $ 270,553
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 $ 459,183 $ 383,284
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 $ 609,630 $ 541,920
Common equity tier 1 capital, Actual Ratio 0.1128 0.1202
Common equity tier 1 capital, For capital adequacy purposes, Amount $ 243,097 $ 202,915
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 capital1 adequacy purposes with capital buffer, Amount $ 378,151 $ 315,645
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio 7.00% 7.50%
Tier 1 capital (to average assets), Actual, Amount $ 729,835 $ 661,729
Tier 1 capital (to average assets), Actual, Ratio 0.1003 0.0905
Tier 1 capital (to average assets), For capital adequacy purposes, Amount $ 291,122 $ 292,335
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 $ 291,122 $ 292,335
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 $ 726,339 $ 664,061
Total capital (to risk-weighted assets), Actual, Ratio 0.1359 0.1472
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount $ 427,456 $ 361,015
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 $ 561,036 $ 473,832
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 $ 534,320 $ 451,269
Total capital (to risk-weighted assets), For well capitalized purpose, Ratio 0.1000 0.1000
Tier 1 capital (to average assets), Actual, Amount $ 679,784 $ 617,592
Tier 1 capital (to average assets), Actual, Ratio 0.1272 0.1369
Tier 1 capital (to average assets), For capital adequacy purposes, Amount $ 320,592 $ 270,761
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 $ 454,172 $ 383,578
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 $ 427,456 $ 361,015
Tier 1 capital (to average assets), For well capitalized purposes, Ratio 0.0800 0.0800
Common equity tier 1 capital, Actual Amount $ 679,784 $ 617,592
Common equity tier 1 capital, Actual Ratio 0.1272 0.1369
Common equity tier 1 capital, For capital adequacy purposes, Amount $ 240,444 $ 203,071
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 capital1 adequacy purposes with capital buffer, Amount $ 374,024 $ 315,888
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio 7.00% 7.50%
Common equity tier 1 capital, For well capitalized purpose, Amount $ 347,308 $ 293,325
Common equity tier 1 capital, For well capitalized purposes, Ratio 6.50% 6.50%
Tier 1 capital (to average assets), Actual, Amount $ 679,784 $ 617,592
Tier 1 capital (to average assets), Actual, Ratio 0.0889 0.0850
Tier 1 capital (to average assets), For capital adequacy purposes, Amount $ 305,996 $ 29,064
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 $ 305,996 $ 290,646
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 $ 382,495 $ 363,307
Tier 1 capital (to average assets), For well capitalized purposes, Ratio 0.0500 0.0500