CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Actual and Required Capital Ratios (Details)	Jun. 30, 2023	Dec. 31, 2022
Tier 1 capital to risk-weighted assets
Total capital to risk-weighted assets	0.144	0.146
Common equity tier 1 capital to risk-weighted assets	12.10%	12.40%
Tier 1 capital to risk-weighted assets	0.123	0.126
Tier 1 capital to average assets	0.096	0.102
Total capital to risk-weighted assets, Minimum Capital Requirement	0.080
Common equity tier 1 capital to risk-weighted assets, Minimum Capital Requirement	0.045
Tier 1 capital to risk-weighted assets, Minimum Capital Requirement	0.060
Tier 1 capital to average assets, Minimum Capital Requirement	0.040
Bank
Tier 1 capital to risk-weighted assets
Total capital to risk-weighted assets	0.134	0.136
Common equity tier 1 capital to risk-weighted assets	12.40%	12.60%
Tier 1 capital to risk-weighted assets	0.124	0.126
Tier 1 capital to average assets	0.096	0.102

Common equity Tier 1 capital divided by risk weighted assets as defined by regulations.

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- Definition

Ratio of minimum Common Equity Tier 1 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
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
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Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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-Section 50
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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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