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Regulatory Capital - Summary of Regulatory Capital Requirement (Details) $ in Thousands | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total capital (to risk-weighted assets), Actual, Amount | $ 733,695 | $ 708,198
Total capital (to risk-weighted assets), Actual, Ratio | 0.1521 | 0.1571
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount | $ 382,005 | $ 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 | $ 501,382 | $ 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 | $ 679,232 | $ 661,729
Tier 1 capital (to average assets), Actual, Ratio | 0.1408 | 0.1468
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 286,504 | $ 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 | $ 405,880 | $ 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 | $ 541,696 | $ 541,920
Common equity tier 1 capital, Actual Ratio | 0.1164 | 0.1202
Common equity tier 1 capital, For capital adequacy purposes, Amount | $ 214,878 | $ 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 capital adequacy purposes with capital buffer, Amount | $ 324,254 | $ 315,645
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 | $ 679,232 | $ 661,729
Tier 1 capital (to average assets), Actual, Ratio | 0.0970 | 0.0905
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 284,361 | $ 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 | $ 284,361 | $ 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 | $ 679,970 | $ 664,061
Total capital (to risk-weighted assets), Actual, Ratio | 0.1425 | 0.1472
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount | $ 381,711 | $ 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 | $ 500,996 | $ 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 | $ 477,139 | $ 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 | $ 631,371 | $ 617,592
Tier 1 capital (to average assets), Actual, Ratio | 0.1323 | 0.1369
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 286,284 | $ 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 | $ 405,568 | $ 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 | $ 381,711 | $ 361,015
Tier 1 capital (to average assets), For well capitalized purposes, Ratio | 0.0800 | 0.0800
Common equity tier 1 capital, Actual Amount | $ 631,371 | $ 617,592
Common equity tier 1 capital, Actual Ratio | 0.1323 | 0.1369
Common equity tier 1 capital, For capital adequacy purposes, Amount | $ 214,713 | $ 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 capital adequacy purposes with capital buffer, Amount | $ 333,998 | $ 315,888
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 | $ 310,141 | $ 293,325
Common equity tier 1 capital, For well capitalized purposes, Ratio | 6.50% | 6.50%
Tier 1 capital (to average assets), Actual, Amount | $ 631,371 | $ 617,592
Tier 1 capital (to average assets), Actual, Ratio | 0.0883 | 0.0850
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 286,014 | $ 290,646
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 | $ 286,014 | $ 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 | $ 357,517 | $ 363,307
Tier 1 capital (to average assets), For well capitalized purposes, Ratio | 0.0500 | 0.0500

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