3.26.1 html 643 458 1 true 98 0 false 9 false false R1.htm 75000 - Document - Cover Page Sheet http://cbbank.com/20260630/taxonomy/role/CoverPage Cover Page Cover 1 false false R2.htm 75010 - Statement - Condensed Consolidated Balance Sheets (Unaudited) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsUnaudited1 Condensed Consolidated Balance Sheets (Unaudited) Statements 2 false false R3.htm 75020 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsUnauditedParenthetical Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) Statements 3 false false R4.htm 75030 - Statement - Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfEarningsAndComprehensiveIncomeUnaudited Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) Statements 4 false false R5.htm 75040 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfStockholdersEquityUnaudited Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Statements 5 false false R6.htm 75050 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfStockholdersEquityUnauditedParenthetical Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) Statements 6 false false R7.htm 75060 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://cbbank.com/20260630/taxonomy/role/StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 7 false false R8.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 8 false false R9.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 9 false false R10.htm 995455 - Disclosure - Business Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusiness1 Business Notes 10 false false R11.htm 995465 - Disclosure - Basis of Presentation Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBasisOfPresentation Basis of Presentation Notes 11 false false R12.htm 995475 - Disclosure - Summary of Significant Accounting Policies Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies1 Summary of Significant Accounting Policies Notes 12 false false R13.htm 995485 - Disclosure - Business Combination Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombination1 Business Combination Notes 13 false false R14.htm 995495 - Disclosure - Investment Securities Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecurities Investment Securities Notes 14 false false R15.htm 995505 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLosses Loans and Lease Finance Receivables and Allowance for Credit Losses Notes 15 false false R16.htm 995515 - Disclosure - Goodwill and Other Intangibles Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangibles1 Goodwill and Other Intangibles Notes 16 false false R17.htm 995525 - Disclosure - Borrowings Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBorrowings1 Borrowings Notes 17 false false R18.htm 995535 - Disclosure - Earnings Per Share Reconciliation Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureEarningsPerShareReconciliation1 Earnings Per Share Reconciliation Notes 18 false false R19.htm 995545 - Disclosure - Fair Value Information Sheet http://cbbank.com/20260630/taxonomy/role/FairValueInformation Fair Value Information Notes 19 false false R20.htm 995555 - Disclosure - Derivative Financial Instruments Sheet http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstruments Derivative Financial Instruments Notes 20 false false R21.htm 995565 - Disclosure - Balance Sheet Offsetting Sheet http://cbbank.com/20260630/taxonomy/role/BalanceSheetOffsetting Balance Sheet Offsetting Notes 21 false false R22.htm 995575 - Disclosure - Other Comprehensive Income Sheet http://cbbank.com/20260630/taxonomy/role/OtherComprehensiveIncome Other Comprehensive Income Notes 22 false false R23.htm 995585 - Disclosure - Leases Sheet http://cbbank.com/20260630/taxonomy/role/Leases Leases Notes 23 false false R24.htm 995595 - Disclosure - Revenue Recognition Sheet http://cbbank.com/20260630/taxonomy/role/RevenueRecognition Revenue Recognition Notes 24 false false R25.htm 995605 - Disclosure - Income Taxes Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureIncomeTaxes1 Income Taxes Notes 25 false false R26.htm 995625 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://cbbank.com/20260630/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies1 26 false false R27.htm 995635 - Disclosure - Business Combination (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationTables Business Combination (Tables) Tables http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombination1 27 false false R28.htm 995645 - Disclosure - Investment Securities (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesTables Investment Securities (Tables) Tables http://cbbank.com/20260630/taxonomy/role/InvestmentSecurities 28 false false R29.htm 995655 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesTables Loans and Lease Finance Receivables and Allowance for Credit Losses (Tables) Tables http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLosses 29 false false R30.htm 995665 - Disclosure - Goodwill and Other Intangibles (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesTables Goodwill and Other Intangibles (Tables) Tables http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangibles1 30 false false R31.htm 995675 - Disclosure - Earnings Per Share Reconciliation (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureEarningsPerShareReconciliationTables Earnings Per Share Reconciliation (Tables) Tables http://cbbank.com/20260630/taxonomy/role/DisclosureEarningsPerShareReconciliation1 31 false false R32.htm 995685 - Disclosure - Fair Value Information (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/FairValueInformationTables Fair Value Information (Tables) Tables http://cbbank.com/20260630/taxonomy/role/FairValueInformation 32 false false R33.htm 995695 - Disclosure - Derivative Financial Instruments (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstrumentsTables Derivative Financial Instruments (Tables) Tables http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstruments 33 false false R34.htm 995705 - Disclosure - Balance Sheet Offsetting (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/BalanceSheetOffsettingTables Balance Sheet Offsetting (Tables) Tables http://cbbank.com/20260630/taxonomy/role/BalanceSheetOffsetting 34 false false R35.htm 995715 - Disclosure - Other Comprehensive Income (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/OtherComprehensiveIncomeTables Other Comprehensive Income (Tables) Tables http://cbbank.com/20260630/taxonomy/role/OtherComprehensiveIncome 35 false false R36.htm 995725 - Disclosure - Leases (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/LeasesTables Leases (Tables) Tables http://cbbank.com/20260630/taxonomy/role/Leases 36 false false R37.htm 995735 - Disclosure - Revenue Recognition (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/RevenueRecognitionTables Revenue Recognition (Tables) Tables http://cbbank.com/20260630/taxonomy/role/RevenueRecognition 37 false false R38.htm 995745 - Disclosure - Income Taxes (Tables) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://cbbank.com/20260630/taxonomy/role/DisclosureIncomeTaxes1 38 false false R39.htm 995755 - Disclosure - Business- Additional Information (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessAdditionalInformationDetail Business- Additional Information (Detail) Details 39 false false R40.htm 995775 - Disclosure - Business Combinations - Additional Information (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationsAdditionalInformationDetails Business Combinations - Additional Information (Details) Details 40 false false R41.htm 995785 - Disclosure - Business Combinations - Schedule of Fair Values of Assets Acquired and Liabilities Assumed from Heritage (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationsScheduleOfFairValuesOfAssetsAcquiredAndLiabilitiesAssumedFromHeritageDetails Business Combinations - Schedule of Fair Values of Assets Acquired and Liabilities Assumed from Heritage (Details) Details 41 false false R42.htm 995795 - Disclosure - Business Combinations - Schedule of Acquired Purchased Credit Deteriorated And Purchased Seasoned Loans (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationsScheduleOfAcquiredPurchasedCreditDeterioratedAndPurchasedSeasonedLoansDetails Business Combinations - Schedule of Acquired Purchased Credit Deteriorated And Purchased Seasoned Loans (Details) Details 42 false false R43.htm 995805 - Disclosure - Business Combinations - Schedule of Unaudited Pro Forma Consolidated Financial Information (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationsScheduleOfUnauditedProFormaConsolidatedFinancialInformationDetails Business Combinations - Schedule of Unaudited Pro Forma Consolidated Financial Information (Details) Details 43 false false R44.htm 995815 - Disclosure - Business Combinations - Schedule of Unaudited Pro Forma Consolidated Financial Information (Parenthetical) (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBusinessCombinationsScheduleOfUnauditedProFormaConsolidatedFinancialInformationParentheticalDetails Business Combinations - Schedule of Unaudited Pro Forma Consolidated Financial Information (Parenthetical) (Details) Details 44 false false R45.htm 995825 - Disclosure - Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesSummaryOfAmortizedCostAndEstimatedFairValueOfInvestmentSecuritiesDetail Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Detail) Details 45 false false R46.htm 995835 - Disclosure - Investment Securities - Summary of Interest Income Earned on Investment Securities (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesSummaryOfInterestIncomeEarnedOnInvestmentSecuritiesDetail Investment Securities - Summary of Interest Income Earned on Investment Securities (Detail) Details 46 false false R47.htm 995845 - Disclosure - Investment Securities - Additional Information (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesAdditionalInformationDetail Investment Securities - Additional Information (Detail) Details 47 false false R48.htm 995855 - Disclosure - Investment Securities - Summary of Continuous Unrealized Loss Position of Securities (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesSummaryOfContinuousUnrealizedLossPositionOfSecuritiesDetail Investment Securities - Summary of Continuous Unrealized Loss Position of Securities (Detail) Details 48 false false R49.htm 995865 - Disclosure - Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/InvestmentSecuritiesSummaryOfAmortizedCostAndFairValueOfDebtSecuritiesByContractualMaturityDetail Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) Details 49 false false R50.htm 995875 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Additional Information (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesAdditionalInformationDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Additional Information (Detail) Details 50 false false R51.htm 995885 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Components of Loans and Lease Finance Receivables, Including PCI Loans (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesSummaryOfComponentsOfLoansAndLeaseFinanceReceivablesIncludingPciLoansDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Components of Loans and Lease Finance Receivables, Including PCI Loans (Detail) Details 51 false false R52.htm 995895 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of loans by type and origination year, according to our internal risk ratings (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesSummaryOfLoansByTypeAndOriginationYearAccordingToOurInternalRiskRatingsDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of loans by type and origination year, according to our internal risk ratings (Detail) Details 52 false false R53.htm 995905 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfBalanceAndActivityRelatedToAllowanceForLoanLossesForHeldForInvestmentLoansByTypeDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type (Detail) Details 53 false false R54.htm 995915 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfRecordedInvestmentInAndAgingOfPastDueAndNonaccrualLoansIncludingPciLoansByClassOfLoansDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Detail) Details 54 false false R55.htm 995925 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Parenthetical) (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfRecordedInvestmentInAndAgingOfPastDueAndNonaccrualLoansIncludingPciLoansByClassOfLoansParentheticalDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Parenthetical) (Detail) Details 55 false false R56.htm 995935 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Recorded Investment in Collateral-Dependent loans (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesSummaryOfRecordedInvestmentInCollateralDependentLoansDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Recorded Investment in Collateral-Dependent loans (Detail) Details 56 false false R57.htm 995945 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Amortized Cost of Loans Activity (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfAmortizedCostOfLoansActivityDetails Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Amortized Cost of Loans Activity (Details) Details 57 false false R58.htm 995955 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Financial Effect of the Loan Activity (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfFinancialEffectOfTheLoanActivityDetails Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Financial Effect of the Loan Activity (Details) Details 58 false false R59.htm 995965 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investments for Past Due Loans at Amortized Cost (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesScheduleOfRecordedInvestmentsForPastDueLoansAtAmortizedCostDetails Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Recorded Investments for Past Due Loans at Amortized Cost (Details) Details 59 false false R60.htm 995975 - Disclosure - Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/LoansAndLeaseFinanceReceivablesAndAllowanceForCreditLossesSummaryOfActivityRelatedToTroubledDebtRestructuringsDetail Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) Details 60 false false R61.htm 995995 - Disclosure - Goodwill and Other Intangible (Additional Information) (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAdditionalInformationDetails Goodwill and Other Intangible (Additional Information) (Details) Details http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesTables 61 false false R62.htm 996005 - Disclosure - Goodwill and Other Intangibles - Changes in the carrying value of goodwill (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesChangesInTheCarryingValueOfGoodwillDetails Goodwill and Other Intangibles - Changes in the carrying value of goodwill (Details) Details 62 false false R63.htm 996015 - Disclosure - Goodwill and Other Intangibles - Summary of Amortizable Intangible Assets (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesSummaryOfAmortizableIntangibleAssetsDetails Goodwill and Other Intangibles - Summary of Amortizable Intangible Assets (Details) Details 63 false false R64.htm 996025 - Disclosure - Borrowings - Additional Information (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureBorrowingsAdditionalInformationDetails Borrowings - Additional Information (Details) Details 64 false false R65.htm 996035 - Disclosure - Earnings Per Share Reconciliation - Additional Information (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureEarningsPerShareReconciliationAdditionalInformationDetail Earnings Per Share Reconciliation - Additional Information (Detail) Details 65 false false R66.htm 996045 - Disclosure - Earnings Per Share Reconciliation - Schedule of Earnings Per Common Share Reconciliation (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureEarningsPerShareReconciliationScheduleOfEarningsPerCommonShareReconciliationDetail Earnings Per Share Reconciliation - Schedule of Earnings Per Common Share Reconciliation (Detail) Details 66 false false R67.htm 996055 - Disclosure - Fair Value Information - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/FairValueInformationAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail Fair Value Information - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) Details 67 false false R68.htm 996065 - Disclosure - Fair Value Information - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/FairValueInformationAssetsAndLiabilitiesMeasuredAtFairValueOnNonRecurringBasisDetail Fair Value Information - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) Details 68 false false R69.htm 996075 - Disclosure - Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/FairValueInformationEstimatedFairValueOfFinancialInstrumentsDetail Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) Details 69 false false R70.htm 996085 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstrumentsAdditionalInformationDetail Derivative Financial Instruments - Additional Information (Detail) Details 70 false false R71.htm 996095 - Disclosure - Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstrumentsFairValueOfDerivativeInstrumentsDetail Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) Details 71 false false R72.htm 996105 - Disclosure - Derivative Financial Instruments - Fair Value by Balance Sheet Grouping (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureDerivativeFinancialInstrumentsFairValueByBalanceSheetGroupingDetails Derivative Financial Instruments - Fair Value by Balance Sheet Grouping (Details) Details 72 false false R73.htm 996115 - Disclosure - Derivative Financial Instruments - Fair Value by Balance Sheet Grouping (Parenthetical) (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureDerivativeFinancialInstrumentsFairValueByBalanceSheetGroupingParentheticalDetails Derivative Financial Instruments - Fair Value by Balance Sheet Grouping (Parenthetical) (Details) Details 73 false false R74.htm 996125 - Disclosure - Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DerivativeFinancialInstrumentsEffectOfDerivativeInstrumentsOnConsolidatedStatementOfEarningsDetail Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) Details 74 false false R75.htm 996145 - Disclosure - Balance Sheet Offsetting - Schedule of Balance Sheet Offsetting (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/BalanceSheetOffsettingScheduleOfBalanceSheetOffsettingDetail Balance Sheet Offsetting - Schedule of Balance Sheet Offsetting (Detail) Details 75 false false R76.htm 996155 - Disclosure - Other Comprehensive Income - Summary of Components of OCI (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/OtherComprehensiveIncomeSummaryOfComponentsOfOciDetail Other Comprehensive Income - Summary of Components of OCI (Detail) Details 76 false false R77.htm 996165 - Disclosure - LEASES (Additional Information) (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLeasesAdditionalInformationDetails LEASES (Additional Information) (Details) Details 77 false false R78.htm 996175 - Disclosure - LEASES - Components of Lease Costs and Supplemental Information Related to Leases (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLeasesComponentsOfLeaseCostsAndSupplementalInformationRelatedToLeasesDetail LEASES - Components of Lease Costs and Supplemental Information Related to Leases (Detail) Details 78 false false R79.htm 996185 - Disclosure - LEASES - Schedule of Future Lease Payments Required for Leases That have Initial or Remaining Non-cancelable Lease Terms (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureLeasesScheduleOfFutureLeasePaymentsRequiredForLeasesThatHaveInitialOrRemainingNoncancelableLeaseTermsDetail LEASES - Schedule of Future Lease Payments Required for Leases That have Initial or Remaining Non-cancelable Lease Terms (Detail) Details 79 false false R80.htm 996205 - Disclosure - Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) Sheet http://cbbank.com/20260630/taxonomy/role/RevenueRecognitionSummaryOfNonInterestIncomeSegregatedByRevenueStreamsInScopeAndOutOfScopeOfTopic606Detail Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) Details 80 false false R81.htm 996215 - Disclosure - Income Taxes - Schedule of Balances of the Company's tax credit Investments and Related Unfunded Commitments (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureIncomeTaxesScheduleOfBalancesOfTheCompanysTaxCreditInvestmentsAndRelatedUnfundedCommitmentsDetails Income Taxes - Schedule of Balances of the Company's tax credit Investments and Related Unfunded Commitments (Details) Details 81 false false R82.htm 996225 - Disclosure - Income Taxes - Schedule of Other Information related to the Company's Tax Credit Investments (Details) Sheet http://cbbank.com/20260630/taxonomy/role/DisclosureIncomeTaxesScheduleOfOtherInformationRelatedToTheCompanysTaxCreditInvestmentsDetails Income Taxes - Schedule of Other Information related to the Company's Tax Credit Investments (Details) Details 82 false false All Reports Book All Reports cvbf-20260630.htm cvbf-20260630.xsd http://fasb.org/srt/2026 http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 false false