 | us-gaap:InterestIncomeFinancingReceivableBeforeAllowanceForCreditLossIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeTaxableInvestmentSecuritiesIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeNontaxableInvestmentSecurityIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeDepositWithFinancialInstitutionIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeFederalFundsSoldIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeSecurityPurchasedUnderAgreementToResellIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeShortTermInvestmentIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeShortTermInvestmentOtherIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeInterestEarningAssetIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift |
 | us-gaap:InterestIncomeFinancingReceivableBeforeAllowanceForCreditLossIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeTaxableInvestmentSecuritiesIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeNontaxableInvestmentSecurityIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeDepositWithFinancialInstitutionIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeFederalFundsSoldIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeSecurityPurchasedUnderAgreementToResellIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeShortTermInvestmentIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeShortTermInvestmentOtherIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:InterestIncomeInterestEarningAssetIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |