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v3.22.2.2

Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail) $ in Thousands | Sep. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Consolidated |  |
Schedule of Capitalization [Line Items] |  |
Total Capital (to Risk Weighted Assets) | $ 1,081,212 | $ 893,294
Tier 1 Capital (to Risk Weighted Assets) | 941,748 | 820,654
Common Equity Tier 1 Capital (to Risk Weighted Assets) | 885,089 | 764,319
Tier 1 Capital (to Average Assets) | $ 941,748 | $ 820,654
Total Capital Ratio (to Risk Weighted Assets) | 0.1397 | 0.1542
Tier 1 Capital Ratio (to Risk Weighted Assets) | 0.1217 | 0.1417
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets) | 0.1144 | 0.1319
Tier 1 Capital Ratio (to Average Assets) | 0.0961 | 0.0988
Consolidated | Basel III Fully Phased In |  |
Schedule of Capitalization [Line Items] |  |
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement | $ 812,434 | $ 608,258
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement | 657,685 | 492,399
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement | 541,623 | 405,505
Tier 1 Capital (to Average Assets), Minimum Capital Requirement | $ 392,056 | $ 332,205
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) | $ 1,072,238 | $ 884,255
Tier 1 Capital (to Risk Weighted Assets) | 975,455 | 811,713
Common Equity Tier 1 Capital (to Risk Weighted Assets) | 975,455 | 811,713
Tier 1 Capital (to Average Assets) | $ 975,455 | $ 811,713
Total Capital Ratio (to Risk Weighted Assets) | 0.1386 | 0.1528
Tier 1 Capital Ratio (to Risk Weighted Assets) | 0.1261 | 0.1403
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets) | 0.1261 | 0.1403
Tier 1 Capital Ratio (to Average Assets) | 0.0996 | 0.0977
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 773,358 | $ 578,676
Capital Required to be Well Capitalized to Risk Weighted Assets | 0.1000 | 0.1000
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 618,686 | $ 462,941
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 0.0800 | 0.0800
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 502,683 | $ 376,140
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 6.50% | 6.50%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions | $ 489,767 | $ 415,245
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 | $ 812,026 | $ 607,610
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement | 657,354 | 491,875
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement | 541,351 | 405,073
Tier 1 Capital (to Average Assets), Minimum Capital Requirement | $ 391,814 | $ 332,196
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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