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Regulatory Capital - Summary of Regulatory Capital Requirement (Details) $ in Thousands | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total capital (to risk-weighted assets), Actual, Amount | $ 687,957 | $ 648,804
Total capital (to risk-weighted assets), Actual, Ratio | 0.1665 | 0.1491
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount | $ 330,550 | $ 348,024
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 | $ 433,847 | $ 456,782
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 | $ 634,359 | $ 607,340
Tier 1 capital (to average assets), Actual, Ratio | 0.1535 | 0.1396
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 247,958 | $ 261,018
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 | $ 351,274 | $ 369,775
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 | $ 519,058 | $ 491,281
Common equity tier 1 capital, Actual Ratio | 0.1256 | 0.1129
Common equity tier 1 capital, For capital adequacy purposes, Amount | $ 185,968 | $ 195,764
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 | $ 289,284 | $ 304,522
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 | $ 634,359 | $ 607,340
Tier 1 capital (to average assets), Actual, Ratio | 0.1076 | 0.1068
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 235,821 | $ 227,507
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 | $ 235,821 | $ 227,507
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 | $ 573,430 | $ 532,315
Total capital (to risk-weighted assets), Actual, Ratio | 0.1409 | 0.1221
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount | $ 325,581 | $ 348,810
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 | $ 427,325 | $ 457,813
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 | $ 406,977 | $ 436,013
Total capital (to risk-weighted assets), For well capitalized purpose, Ratio | 0.1000 | 0.1000
Tier 1 capital (to average assets), Actual, Amount | $ 520,873 | $ 492,221
Tier 1 capital (to average assets), Actual, Ratio | 0.1280 | 0.1129
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 244,159 | $ 261,606
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 | $ 345,892 | $ 370,609
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 | $ 325,546 | $ 348,808
Tier 1 capital (to average assets), For well capitalized purposes, Ratio | 0.0800 | 0.0800
Common equity tier 1 capital, Actual Amount | $ 520,873 | $ 492,221
Common equity tier 1 capital, Actual Ratio | 0.1280 | 0.1129
Common equity tier 1 capital, For capital adequacy purposes, Amount | $ 183,119 | $ 196,205
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 | $ 284,852 | $ 305,207
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 | $ 264,506 | $ 283,407
Common equity tier 1 capital, For well capitalized purposes, Ratio | 6.50% | 6.50%
Tier 1 capital (to average assets), Actual, Amount | $ 520,873 | $ 492,221
Tier 1 capital (to average assets), Actual, Ratio | 0.0879 | 0.0871
Tier 1 capital (to average assets), For capital adequacy purposes, Amount | $ 237,030 | $ 226,158
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 | $ 237,030 | $ 226,158
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 | $ 296,287 | $ 282,697
Tier 1 capital (to average assets), For well capitalized purposes, Ratio | 0.0500 | 0.0500

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