REGULATORY MATTERS - Actual Capital Amounts and Ratios (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Company (Consolidated)
Common equity Tier 1 (Ratio)
Total risk-based	$ 960,381	$ 892,310
Common equity Tier 1	781,326	715,858
Tier 1 risk-based	805,633	740,113
Tier 1 leverage	$ 805,633	$ 740,113
Total risk-based, ratio	0.156	0.150
Common equity Tier 1, ratio	12.70%	12.10%
Tier I risk-based, ratio	0.131	0.125
Tier I leverage, ratio	0.105	0.097
Subsidiary The First
Common equity Tier 1 (Ratio)
Total risk-based	$ 946,568	$ 875,071
Common equity Tier 1	890,438	821,246
Tier 1 risk-based	890,438	821,246
Tier 1 leverage	$ 890,438	$ 821,246
Total risk-based, ratio	0.154	0.148
Common equity Tier 1, ratio	14.50%	13.80%
Tier I risk-based, ratio	0.145	0.138
Tier I leverage, ratio	0.116	0.107

Common equity Tier 1 Risk Based Capital as defined in the regulations.

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

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- Definition

Amount of minimum total risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

+ References

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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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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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.

+ 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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-Section 50
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-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

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Amount of minimum Tier 1 leverage capital categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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

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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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