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Regulatory Matters (Tables) | 9 Months Ended
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Sep. 30, 2023
Banking Regulation, Global Systemically Important Bank (GSIB) Surcharge [Abstract] |
Summary of Actual and Required Capital Ratios of Bank |
| Actual |  | Required for Capital Adequacy Purposes |  | Required to be Considered Well Capitalized
As of September 30, 2023: | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
| (dollars in thousands)
Total Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,177,733 |  |  | 14.51 | % |  | $ | 852,532 |  |  | 10.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,172,064 |  |  | 14.44 | % |  | $ | 852,325 |  |  | 10.50 | % |  | $ | 811,738 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,033,710 |  |  | 12.73 | % |  | $ | 690,145 |  |  | 8.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,070,347 |  |  | 13.19 | % |  | $ | 689,978 |  |  | 8.50 | % |  | $ | 649,391 |  |  | 8.00 | %
Common equity Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 976,657 |  |  | 12.03 | % |  | $ | 568,355 |  |  | 7.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,070,347 |  |  | 13.19 | % |  | $ | 568,217 |  |  | 7.00 | % |  | $ | 527,630 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,033,710 |  |  | 10.60 | % |  | $ | 389,994 |  |  | 4.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,070,347 |  |  | 10.98 | % |  | $ | 389,953 |  |  | 4.00 | % |  | $ | 487,441 |  |  | 5.00 | %
| Actual |  |  |  | Required for Capital Adequacy Purposes |  | Required to be Considered Well Capitalized
As of December 31, 2022: | Amount |  | Ratio |  |  |  |  |  | Amount |  | Ratio |  | Amount |  | Ratio
| (dollars in thousands)
Total Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 1,115,257 |  |  | 14.19 | % |  |  |  |  |  | $ | 825,234 |  |  | 10.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,107,941 |  |  | 14.10 | % |  |  |  |  |  | $ | 825,039 |  |  | 10.50 | % |  | $ | 785,751 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 974,325 |  |  | 12.40 | % |  |  |  |  |  | $ | 668,047 |  |  | 8.50 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,009,577 |  |  | 12.85 | % |  |  |  |  |  | $ | 667,888 |  |  | 8.50 | % |  | $ | 628,601 |  |  | 8.00 | %
Common equity Tier 1 Capital (to Risk Weighted Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 917,565 |  |  | 11.67 | % |  |  |  |  |  | $ | 550,156 |  |  | 7.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,009,577 |  |  | 12.85 | % |  |  |  |  |  | $ | 550,026 |  |  | 7.00 | % |  | $ | 510,738 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 974,325 |  |  | 10.14 | % |  |  |  |  |  | $ | 384,337 |  |  | 4.00 | % |  | N/A |  | N/A
Tri Counties Bank | $ | 1,009,577 |  |  | 10.51 | % |  |  |  |  |  | $ | 384,146 |  |  | 4.00 | % |  | $ | 480,183 |  |  | 5.00 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + 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//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
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