Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
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	0.10500	0.10500
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations	0.100	0.100
Tier 1 capital (to risk weighted assets) minimum required for capital adequacy purposes	0.08500	0.08500
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations	0.080	0.080
Tier 1 capital (to average assets) minimum required for capital adequacy purposes	0.04000	0.04000
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action regulations	0.050	0.050
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital (to risk weighted assets) actual amount	$ 1,261,518	$ 1,244,028
CET1 capital (to risk weighted assets) actual ratio	15.01%	14.90%
Total capital (to risk weighted assets) actual amount	$ 1,329,306	$ 1,338,356
Total capital (to risk weighted assets) actual ratio	0.1582	0.1603
Tier 1 capital (to risk weighted assets) actual amount	$ 1,261,518	$ 1,244,028
Tier 1 capital (to risk weighted assets) actual ratio	0.1501	0.1490
Tier 1 capital (to average assets) actual amount	$ 1,261,518	$ 1,244,028
Tier 1 capital (to average assets) actual ratio	0.1016	0.1129
Parent Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital (to risk weighted assets) actual amount	$ 1,269,329	$ 1,137,896
CET1 capital (to risk weighted assets) actual ratio	15.02%	13.49%
Total capital (to risk weighted assets) actual amount	$ 1,365,117	$ 1,438,224
Total capital (to risk weighted assets) actual ratio	0.1615	0.1704
Tier 1 capital (to risk weighted assets) actual amount	$ 1,269,329	$ 1,137,896
Tier 1 capital (to risk weighted assets) actual ratio	0.1502	0.1349
Tier 1 capital (to average assets) actual amount	$ 1,269,329	$ 1,137,896
Tier 1 capital (to average assets) actual ratio	0.1019	0.1031

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.

+ References

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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.

+ References

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

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Amount of total capital as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section 50
-Paragraph 1
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Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Ratio of total risk-based capital to risk-weighted assets 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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Ratio of Tier 1 capital to average assets as defined by regulatory framework.

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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 required for capital adequacy 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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Ratio of Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework.

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