Regulatory Matters - Schedule of Regulatory Capital Requirements Under Banking Regulations (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
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

Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy with Buffer, Minimum

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The amount of CET1 capital as defined in the regulations.

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The minimum CET1 risk based capital ratio (CET1 capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The CET1 risk based capital ratio (CET1 capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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CET1 capital divided by risk weighted assets as defined in the regulations.

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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.

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Amount of total capital as defined by regulatory framework.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of Tier 1 leverage capital as defined by regulatory framework.

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Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.

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Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Amount of Tier 1 risk-based capital as defined by regulatory framework.

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Ratio of minimum Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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