Regulatory and Operational Matters - Narrative (Details) - Subsidiaries	Jun. 30, 2026	Dec. 31, 2025	Jan. 17, 2025
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital ratio, actual	0.1322	0.1866
Tier 1 capital ratio, actual	0.1322	0.1866
Tier 1 leverage capital ratio, actual	0.0960	0.1142
Total risk-based capital ratio, actual	0.1415	0.1925
Mandated Ratio
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital ratio, actual			0.1000
Tier 1 capital ratio, actual			0.1000
Tier 1 leverage capital ratio, actual			0.0900
Total risk-based capital ratio, actual			0.1150

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

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

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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