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Regulatory & Capital Matters (Details) $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	7.81	10.21
Risk-based capital ratio (as a percent)	12.55	14.26
Phase out of impact of allowance for credit loss	$ 3.8
Deferment of impact on retained earnings	$ 3.8
Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	9.58	10.74
Risk-based capital ratio (as a percent)	13.46	15.00
Minimum | Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	8
Risk-based capital ratio (as a percent)	12

X

- Definition

The amount of deferment of cumulative effect on retained earnings due to adoption of new accounting standards.

+ References

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- Definition

The amount of phase out the impact of allowance for credit loss.

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- Definition

Ratio of total risk-based capital to risk-weighted assets 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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- Definition

Ratio of Tier 1 capital to average assets 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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