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Regulatory Capital - Summary of Regulatory Capital Requirement (Details) $ in Thousands | Sep. 30, 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 | $ 760,102 | $ 708,198
Total capital (to risk-weighted assets), actual, ratio | 0.1444 | 0.1571
Total capital (to risk-weighted assets), for capital adequacy purposes, amount | $ 421,180 | $ 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 | $ 552,798 | $ 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 | $ 712,642 | $ 661,729
Tier 1 capital (to average assets), actual, ratio | 0.1354 | 0.1468
Tier 1 capital (to average assets), for capital adequacy purposes, amount | $ 315,885 | $ 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 | $ 447,503 | $ 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 | $ 592,723 | $ 541,920
Common equity tier 1 capital, actual ratio | 0.1126 | 0.1202
Common equity tier 1 capital, for capital adequacy purposes, amount | $ 236,914 | $ 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 | $ 368,532 | $ 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 | $ 712,642 | $ 661,729
Tier 1 capital (to average assets), actual, ratio | 0.0956 | 0.0905
Tier 1 capital (to average assets), for capital adequacy purposes, amount | $ 298,240 | $ 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 | $ 298,240 | $ 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 | $ 711,478 | $ 664,061
Total capital (to risk-weighted assets), actual, ratio | 0.1365 | 0.1472
Total capital (to risk-weighted assets), for capital adequacy purposes, amount | $ 416,859 | $ 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 | $ 547,127 | $ 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 | $ 521,073 | $ 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 | $ 664,018 | $ 617,592
Tier 1 capital (to average assets), actual, ratio | 0.1274 | 0.1369
Tier 1 capital (to average assets), for capital adequacy purposes, amount | $ 312,644 | $ 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 | $ 442,912 | $ 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 | $ 416,859 | $ 361,015
Tier 1 capital (to average assets), for well capitalized purposes, ratio | 0.0800 | 0.0800
Common equity tier 1 capital, actual amount | $ 664,018 | $ 617,592
Common equity tier 1 capital, actual ratio | 0.1274 | 0.1369
Common equity tier 1 capital, for capital adequacy purposes, amount | $ 234,483 | $ 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 | $ 364,751 | $ 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 | $ 338,698 | $ 293,325
Common equity tier 1 capital, for well capitalized purposes, ratio | 6.50% | 6.50%
Tier 1 capital (to average assets), actual, amount | $ 664,018 | $ 617,592
Tier 1 capital (to average assets), actual, ratio | 0.0884 | 0.0850
Tier 1 capital (to average assets), for capital adequacy purposes, amount | $ 300,512 | $ 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 | $ 300,512 | $ 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 | $ 375,641 | $ 363,307
Tier 1 capital (to average assets), for well capitalized purposes, ratio | 0.0500 | 0.0500

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