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v3.25.3

Regulatory Matters (Detail) $ in Thousands | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
--- | --- | ---
Consolidated |  |
Schedule of Capitalization [Line Items] |  |
Total capital (to risk weighted assets) | $ 1,240,959 | $ 1,258,218
Tier 1 capital (to risk weighted assets) | 1,137,918 | 1,118,292
Common equity Tier 1 capital (to risk weighted assets) | 1,097,918 | 1,060,690
Tier 1 capital (to average assets) | $ 1,137,918 | $ 1,118,292
Total capital ratio (to risk weighted assets) | 0.1511 | 0.1571
Tier 1 capital ratio (to risk weighted assets) | 0.1385 | 0.1396
Common equity Tier 1 capital ratio (to risk weighted assets) | 0.1337 | 0.1324
Tier 1 capital ratio (to average assets) | 0.1171 | 0.1170
Consolidated | Basel III Fully Phased In |  |
Schedule of Capitalization [Line Items] |  |
Total capital (to risk weighted assets), minimum capital requirement | $ 862,402 | $ 840,943
Tier 1 capital (to risk weighted assets), minimum capital requirement | 698,135 | 680,763
Common equity Tier 1 capital (to risk weighted assets), minimum capital requirement | 574,935 | 560,628
Tier 1 capital (to average assets), minimum capital requirement | $ 388,850 | $ 382,214
Total capital ratio (to risk weighted assets), minimum capital requirement | 0.1050 | 0.1050
Tier 1 capital ratio (to risk weighted assets), minimum capital requirement | 0.0850 | 0.0850
Common equity Tier 1 capital ratio (to risk weighted assets), minimum capital requirement | 7.00% | 7.00%
Tier 1 capital ratio (to average assets), minimum capital requirement | 0.0400 | 0.0400
Tri Counties Bank |  |
Schedule of Capitalization [Line Items] |  |
Total capital (to risk weighted assets) | $ 1,233,469 | $ 1,248,802
Tier 1 capital (to risk weighted assets) | 1,130,460 | 1,148,328
Common equity Tier 1 capital (to risk weighted assets) | 1,130,460 | 1,148,328
Tier 1 capital (to average assets) | $ 1,130,460 | $ 1,148,328
Total capital ratio (to risk weighted assets) | 0.1502 | 0.1560
Tier 1 capital ratio (to risk weighted assets) | 0.1377 | 0.1434
Common equity Tier 1 capital ratio (to risk weighted assets) | 0.1377 | 0.1434
Tier 1 capital ratio (to average assets) | 0.1163 | 0.1202
Total capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions | $ 821,200 | $ 800,704
Tier 1 capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions | 656,960 | 640,563
Common equity Tier 1 capital (to risk weighted assets), minimum to be well capitalized under prompt corrective action provisions | 533,780 | 520,458
Tier 1 capital (to average assets), minimum to be well capitalized under prompt corrective action provisions | $ 485,943 | $ 477,620
Capital required to be well capitalized to risk weighted assets | 0.1000 | 0.1000
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.0800 | 0.0800
Common equity tier one risk based capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
Tier one leverage capital required to be well capitalized to average assets | 0.0500 | 0.0500
Tri Counties Bank | Basel III Fully Phased In |  |
Schedule of Capitalization [Line Items] |  |
Total capital (to risk weighted assets), minimum capital requirement | $ 862,260 | $ 840,740
Tier 1 capital (to risk weighted assets), minimum capital requirement | 698,020 | 680,599
Common equity Tier 1 capital (to risk weighted assets), minimum capital requirement | 574,840 | 560,493
Tier 1 capital (to average assets), minimum capital requirement | $ 388,755 | $ 382,096
Total capital ratio (to risk weighted assets), minimum capital requirement | 0.1050 | 0.1050
Tier 1 capital ratio (to risk weighted assets), minimum capital requirement | 0.0850 | 0.0850
Common equity Tier 1 capital ratio (to risk weighted assets), minimum capital requirement | 7.00% | 7.00%
Tier 1 capital ratio (to average assets), minimum capital requirement | 0.0400 | 0.0400

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