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Regulatory Matters - Schedule of Regulatory Capital Requirements Under Banking Regulations (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital (to risk weighted assets) minimum required for capital adequacy purposes | 7.00% | 7.00%
CET1 capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations | 6.50% | 6.50%
Total capital (to risk weighted assets) minimum required for capital adequacy purposes | 0.1050 | 0.1050
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations | 0.1000 | 0.1000
Tier 1 capital (to risk weighted assets) minimum required for capital adequacy purposes | 0.0850 | 0.0850
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations | 0.0800 | 0.0800
Tier 1 capital (to average assets) minimum required for capital adequacy purposes | 0.0400 | 0.0400
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action regulations | 0.0500 | 0.0500
The risk-based ratios reflect the minimum requirement plus the capital conservation buffer | 0.0250 |
Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital (to risk weighted assets) actual amount | $ 1,373,857 | $ 1,330,001
CET1 capital (to risk weighted assets) actual ratio | 14.76% | 13.92%
Total capital (to risk weighted assets) actual amount | $ 1,488,635 | $ 1,415,381
Total capital (to risk weighted assets) actual ratio | 0.1600 | 0.1481
Tier 1 capital (to risk weighted assets) actual amount | $ 1,373,857 | $ 1,330,001
Tier 1 capital (to risk weighted assets) actual ratio | 0.1476 | 0.1392
Tier 1 capital (to average assets) actual amount | $ 1,373,857 | $ 1,330,001
Tier 1 capital (to average assets) actual ratio | 0.1082 | 0.1072
Parent Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
CET1 capital (to risk weighted assets) actual amount | $ 1,369,643 | $ 1,335,967
CET1 capital (to risk weighted assets) actual ratio | 14.63% | 13.90%
Total capital (to risk weighted assets) actual amount | $ 1,484,420 | $ 1,421,347
Total capital (to risk weighted assets) actual ratio | 0.1586 | 0.1479
Tier 1 capital (to risk weighted assets) actual amount | $ 1,369,643 | $ 1,335,967
Tier 1 capital (to risk weighted assets) actual ratio | 0.1463 | 0.1390
Tier 1 capital (to average assets) actual amount | $ 1,369,643 | $ 1,335,967
Tier 1 capital (to average assets) actual ratio | 0.1074 | 0.1073

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- Definition Capital conservation buffer percentage calculated as total risk-based capital ratio after deduction of minimum total risk-based capital ratio as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 + Details
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