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  <xs:element id="isba_CapitalRequiredForCapitalAdequacyToRiskWeightedAssetsMinimumCapitalRequiredPlusCapitalConservationBuffer" abstract="false" name="CapitalRequiredForCapitalAdequacyToRiskWeightedAssetsMinimumCapitalRequiredPlusCapitalConservationBuffer" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="isba_TierOneLeverageCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredPlusCapitalConservationBuffer" abstract="false" name="TierOneLeverageCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredPlusCapitalConservationBuffer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssetsMinimumCapitalRequiredPlusCapitalConservationBuffer" abstract="false" name="TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssetsMinimumCapitalRequiredPlusCapitalConservationBuffer" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="isba_AvailableforsaleSecuritiesExcludingAuctionRateMoneyMarketPreferredandPreferredStocksMember" abstract="true" name="AvailableforsaleSecuritiesExcludingAuctionRateMoneyMarketPreferredandPreferredStocksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_CustomerOverdraftFeesMember" abstract="true" name="CustomerOverdraftFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_ServiceChargesAndDepositAccountFeesMember" abstract="true" name="ServiceChargesAndDepositAccountFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_ATMIncomeMember" abstract="true" name="ATMIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_OtherRevenueMember" abstract="true" name="OtherRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_DiscountedAppraisalValueValuationTechniqueMember" abstract="true" name="DiscountedAppraisalValueValuationTechniqueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_LoansReceivableCollateralizedByRealEstateMember" abstract="true" name="LoansReceivableCollateralizedByRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_CashCropInventoryMember" abstract="true" name="CashCropInventoryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_LoanReceivableCollateralizedByLiquorLicenseMember" abstract="true" name="LoanReceivableCollateralizedByLiquorLicenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_LoanReceivableCollateralizedByFurnitureFixturesAndEquipmentMember" abstract="true" name="LoanReceivableCollateralizedByFurnitureFixturesAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_ImpairedFinancingReceivableFairValueDisclosure" abstract="false" name="ImpairedFinancingReceivableFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_ImpairedFinancingReceivableFairValueDisclosureAppraisedValueDiscount" abstract="false" name="ImpairedFinancingReceivableFairValueDisclosureAppraisedValueDiscount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isba_ImpairedFinancingReceivableFairValueDisclosureAppraisedValueWeightedAverage" abstract="false" name="ImpairedFinancingReceivableFairValueDisclosureAppraisedValueWeightedAverage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isba_InterestReceivableFairValueDisclosure" abstract="false" name="InterestReceivableFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_DepositsWithoutStatedMaturitiesFairValueDisclosure" abstract="false" name="DepositsWithoutStatedMaturitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_DepositsWithStatedMaturitiesFairValueDisclosure" abstract="false" name="DepositsWithStatedMaturitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_InterestPayableFairValueDisclosure" abstract="false" name="InterestPayableFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_OtherMortgageServicingRightsFairValueDisclosure" abstract="false" name="OtherMortgageServicingRightsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_ForeclosedAssetsFairValueDisclosure" abstract="false" name="ForeclosedAssetsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isba_PercentageOfAssetsAndLiabilitiesMeasuredAtFairValue" abstract="false" name="PercentageOfAssetsAndLiabilitiesMeasuredAtFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isba_OtherMortgageServicingRightsMember" abstract="true" name="OtherMortgageServicingRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isba_ForeclosedAssetMember" abstract="true" name="ForeclosedAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
