false Q3 0001499453 --12-31 us-gaap:CollateralPledgedMember us-gaap:CollateralPledgedMember P2Y 0 2020-08-31 2022-11-30 0 0.0210 0.0145 0.0148 0.0148 0.0204 0.0179 0.0231 0.0205 0.0207 0.0207 0.0186 0.0229 0.0210 0.0210 0.0299 0.0502 0.0299 0.0502 0.0299 0.0502 0.0299 0.0502 0.0299 0.0502 0.0299 0.0502 0.0299 0.0502 P3Y8M19D P3Y7M9D P6Y11M15D P6Y10M2D P4Y5M26D P4Y5M8D P0Y P0Y 0001499453 2020-01-01 2020-09-30 xbrli:shares 0001499453 2020-10-26 iso4217:USD 0001499453 2020-09-30 0001499453 2019-12-31 iso4217:USD xbrli:shares 0001499453 2020-07-01 2020-09-30 0001499453 2019-07-01 2019-09-30 0001499453 2019-01-01 2019-09-30 0001499453 us-gaap:CommonStockMember 2019-06-30 0001499453 us-gaap:RetainedEarningsMember 2019-06-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-06-30 0001499453 2019-06-30 0001499453 us-gaap:RetainedEarningsMember 2019-07-01 2019-09-30 0001499453 us-gaap:CommonStockMember 2019-07-01 2019-09-30 0001499453 us-gaap:TreasuryStockMember 2019-07-01 2019-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-07-01 2019-09-30 0001499453 us-gaap:CommonStockMember 2019-09-30 0001499453 us-gaap:RetainedEarningsMember 2019-09-30 0001499453 us-gaap:TreasuryStockMember 2019-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-09-30 0001499453 2019-09-30 0001499453 us-gaap:CommonStockMember 2020-06-30 0001499453 us-gaap:RetainedEarningsMember 2020-06-30 0001499453 us-gaap:TreasuryStockMember 2020-06-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-06-30 0001499453 2020-06-30 0001499453 us-gaap:RetainedEarningsMember 2020-07-01 2020-09-30 0001499453 us-gaap:CommonStockMember 2020-07-01 2020-09-30 0001499453 us-gaap:TreasuryStockMember 2020-07-01 2020-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-07-01 2020-09-30 0001499453 us-gaap:CommonStockMember 2020-09-30 0001499453 us-gaap:RetainedEarningsMember 2020-09-30 0001499453 us-gaap:TreasuryStockMember 2020-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-09-30 0001499453 us-gaap:CommonStockMember 2018-12-31 0001499453 us-gaap:RetainedEarningsMember 2018-12-31 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0001499453 2018-12-31 0001499453 us-gaap:RetainedEarningsMember 2019-01-01 2019-09-30 0001499453 us-gaap:CommonStockMember 2019-01-01 2019-09-30 0001499453 us-gaap:TreasuryStockMember 2019-01-01 2019-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-09-30 0001499453 us-gaap:CommonStockMember 2019-12-31 0001499453 us-gaap:RetainedEarningsMember 2019-12-31 0001499453 us-gaap:TreasuryStockMember 2019-12-31 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0001499453 us-gaap:RetainedEarningsMember 2020-01-01 2020-09-30 0001499453 us-gaap:CommonStockMember 2020-01-01 2020-09-30 0001499453 us-gaap:TreasuryStockMember 2020-01-01 2020-09-30 0001499453 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-09-30 0001499453 stxb:BeevilleMember 2020-01-01 2020-09-30 0001499453 stxb:ChandlerBancorpMember 2020-01-01 2020-09-30 0001499453 stxb:SimmonsBankMember 2020-01-01 2020-09-30 0001499453 stxb:TwoThousandEightStockPlanMember 2020-01-01 2020-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember 2020-01-01 2020-09-30 0001499453 stxb:Bank4TexasWarrantsMember 2020-01-01 2020-09-30 0001499453 stxb:DepositAccountsCoreServiceChargesMember us-gaap:AccountingStandardsUpdate201409Member 2020-07-01 2020-09-30 0001499453 stxb:DepositAccountsCoreServiceChargesMember us-gaap:AccountingStandardsUpdate201409Member 2019-07-01 2019-09-30 0001499453 stxb:DepositAccountsCoreServiceChargesMember us-gaap:AccountingStandardsUpdate201409Member 2020-01-01 2020-09-30 0001499453 stxb:DepositAccountsCoreServiceChargesMember us-gaap:AccountingStandardsUpdate201409Member 2019-01-01 2019-09-30 0001499453 stxb:DepositAccountTransactionBasedFeeIncomeMember us-gaap:AccountingStandardsUpdate201409Member 2020-07-01 2020-09-30 0001499453 stxb:DepositAccountTransactionBasedFeeIncomeMember us-gaap:AccountingStandardsUpdate201409Member 2019-07-01 2019-09-30 0001499453 stxb:DepositAccountTransactionBasedFeeIncomeMember us-gaap:AccountingStandardsUpdate201409Member 2020-01-01 2020-09-30 0001499453 stxb:DepositAccountTransactionBasedFeeIncomeMember us-gaap:AccountingStandardsUpdate201409Member 2019-01-01 2019-09-30 0001499453 stxb:SwapReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2020-07-01 2020-09-30 0001499453 stxb:SwapReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2020-01-01 2020-09-30 0001499453 stxb:MortgageReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2020-07-01 2020-09-30 0001499453 stxb:MortgageReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2019-07-01 2019-09-30 0001499453 stxb:MortgageReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2020-01-01 2020-09-30 0001499453 stxb:MortgageReferralFeesMember us-gaap:AccountingStandardsUpdate201409Member 2019-01-01 2019-09-30 0001499453 us-gaap:AccountingStandardsUpdate201409Member 2020-07-01 2020-09-30 0001499453 us-gaap:AccountingStandardsUpdate201409Member 2019-07-01 2019-09-30 0001499453 us-gaap:AccountingStandardsUpdate201409Member 2020-01-01 2020-09-30 0001499453 us-gaap:AccountingStandardsUpdate201409Member 2019-01-01 2019-09-30 0001499453 us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member 2020-07-01 2020-09-30 0001499453 us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member 2019-07-01 2019-09-30 0001499453 us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member 2020-01-01 2020-09-30 0001499453 us-gaap:CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member 2019-01-01 2019-09-30 0001499453 stxb:BeevilleMember 2019-01-01 2019-09-30 stxb:Branch 0001499453 stxb:BeevilleMember stpr:TX 2019-04-02 stxb:office 0001499453 stxb:BeevilleMember 2019-04-02 2019-04-02 xbrli:pure 0001499453 stxb:BeevilleMember 2019-04-02 0001499453 stxb:BeevilleMember 2020-07-01 2020-09-30 0001499453 stxb:BeevilleMember 2019-07-01 2019-09-30 0001499453 stxb:BeevilleMember us-gaap:CommonStockMember 2019-04-02 0001499453 stxb:ChandlerBancorpMember 2019-01-01 2019-09-30 0001499453 stxb:ChandlerBancorpMember stpr:TX 2019-11-05 0001499453 stxb:ChandlerBancorpMember 2019-11-05 2019-11-05 0001499453 stxb:ChandlerBancorpMember 2019-11-05 0001499453 stxb:ChandlerBancorpMember 2020-07-01 2020-09-30 0001499453 stxb:ChandlerBancorpMember 2019-07-01 2019-09-30 0001499453 stxb:ChandlerBancorpMember us-gaap:CommonStockMember 2019-11-05 0001499453 stxb:SimmonsBankMember stpr:TX 2020-02-28 0001499453 stxb:SimmonsBankMember 2020-02-28 2020-02-28 0001499453 stxb:SimmonsBankMember 2020-02-28 0001499453 stxb:SimmonsBankMember 2020-07-01 2020-09-30 0001499453 stxb:SimmonsBankMember 2019-07-01 2019-09-30 0001499453 stxb:SimmonsBankMember 2019-01-01 2019-09-30 0001499453 us-gaap:USTreasurySecuritiesMember 2020-09-30 0001499453 us-gaap:USStatesAndPoliticalSubdivisionsMember 2020-09-30 0001499453 us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0001499453 us-gaap:CorporateBondSecuritiesMember 2020-09-30 0001499453 us-gaap:USTreasurySecuritiesMember 2019-12-31 0001499453 us-gaap:USStatesAndPoliticalSubdivisionsMember 2019-12-31 0001499453 us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-12-31 stxb:Security 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember stxb:AcquiredLoansMember 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember stxb:OrganicLoansMember 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2020-09-30 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2020-09-30 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember 2020-09-30 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2020-09-30 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2020-09-30 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember 2020-09-30 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2020-09-30 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2020-09-30 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember 2020-09-30 0001499453 us-gaap:ConsumerLoanMember stxb:AcquiredLoansMember 2020-09-30 0001499453 us-gaap:ConsumerLoanMember stxb:OrganicLoansMember 2020-09-30 0001499453 us-gaap:ConsumerLoanMember 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember stxb:AcquiredLoansMember 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember stxb:OrganicLoansMember 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:AcquiredLoansMember 2020-09-30 0001499453 stxb:OrganicLoansMember 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember stxb:AcquiredLoansMember 2019-12-31 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember stxb:OrganicLoansMember 2019-12-31 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2019-12-31 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2019-12-31 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:RealEstateMember 2019-12-31 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2019-12-31 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2019-12-31 0001499453 us-gaap:ConstructionLoansMember us-gaap:RealEstateMember 2019-12-31 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember stxb:AcquiredLoansMember 2019-12-31 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember stxb:OrganicLoansMember 2019-12-31 0001499453 us-gaap:RealEstateLoanMember us-gaap:RealEstateMember 2019-12-31 0001499453 us-gaap:ConsumerLoanMember stxb:AcquiredLoansMember 2019-12-31 0001499453 us-gaap:ConsumerLoanMember stxb:OrganicLoansMember 2019-12-31 0001499453 us-gaap:ConsumerLoanMember 2019-12-31 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember stxb:AcquiredLoansMember 2019-12-31 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember stxb:OrganicLoansMember 2019-12-31 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-12-31 0001499453 stxb:AcquiredLoansMember 2019-12-31 0001499453 stxb:OrganicLoansMember 2019-12-31 0001499453 stxb:SBALoansMember stxb:OrganicLoansMember 2020-09-30 0001499453 stxb:SBALoansMember stxb:OrganicLoansMember 2019-12-31 0001499453 stxb:ConsumerMortgageLoansMember 2020-09-30 0001499453 stxb:ConsumerMortgageLoansMember 2019-12-31 0001499453 stxb:SBALoansMember stxb:ThirdPartyMember 2020-07-01 2020-09-30 0001499453 stxb:SBALoansMember stxb:ThirdPartyMember 2019-07-01 2019-09-30 0001499453 stxb:SBALoansMember stxb:ThirdPartyMember 2020-01-01 2020-09-30 0001499453 stxb:SBALoansMember stxb:ThirdPartyMember 2019-01-01 2019-09-30 0001499453 stxb:SBALoansMember 2020-09-30 0001499453 stxb:SBALoansMember srt:MinimumMember 2020-01-01 2020-09-30 0001499453 stxb:SBALoansMember srt:MaximumMember 2020-01-01 2020-09-30 0001499453 stxb:SBALoansMember 2020-01-01 2020-09-30 0001499453 stxb:LoansHeldForInvestmentAndLongTermBorrowingsMember 2020-09-30 0001499453 stxb:LoansHeldForInvestmentAndLongTermBorrowingsMember 2019-12-31 0001499453 stxb:SBALoansMember 2019-12-31 0001499453 stxb:ExecutiveOfficersAndDirectorsMember 2020-09-30 0001499453 stxb:ExecutiveOfficersAndDirectorsMember 2019-12-31 0001499453 stxb:CitizensMember 2019-11-05 0001499453 stxb:BeevilleOrSimmonsMember stxb:PurchasedCreditImpairedLoansMember 2020-09-30 0001499453 stxb:CitizensMember stxb:PurchasedCreditImpairedLoansMember 2020-09-30 0001499453 stxb:PaycheckProtectionLoansMember 2020-01-01 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-06-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2020-06-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-06-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-07-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-07-01 2020-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2020-07-01 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-07-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-07-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-07-01 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-06-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-06-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2019-06-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-06-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-07-01 2019-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2019-07-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-07-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-07-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-07-01 2019-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-07-01 2019-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2019-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-12-31 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-01-01 2020-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-01-01 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-01-01 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2018-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2018-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2018-12-31 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2018-12-31 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2018-12-31 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2018-12-31 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-01-01 2019-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember 2019-01-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-01-01 2019-09-30 0001499453 stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-01-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-01-01 2019-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-01-01 2019-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember us-gaap:FinancingReceivables30To59DaysPastDueMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:FinancingReceivables30To59DaysPastDueMember 2020-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancingReceivables30To59DaysPastDueMember 2020-09-30 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember 2020-09-30 0001499453 stxb:CommercialAndIndustrialLoansPortfolioSegmentMember us-gaap:FinancingReceivables60To89DaysPastDueMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember us-gaap:FinancingReceivables60To89DaysPastDueMember 2020-09-30 0001499453 stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember us-gaap:FinancingReceivables60To89DaysPastDueMember 2020-09-30 0001499453 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancingReceivables60To89DaysPastDueMember 2020-09-30 0001499453 us-gaap:FinancingReceivables60To89DaysPastDueMember 2020-09-30 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-12-31 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-12-31 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:FinancingReceivables30To59DaysPastDueMember 2019-12-31 0001499453 us-gaap:FinancingReceivables60To89DaysPastDueMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:FinancingReceivables60To89DaysPastDueMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:FinancingReceivables60To89DaysPastDueMember us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:FinancingReceivables60To89DaysPastDueMember 2019-12-31 0001499453 us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember 2019-12-31 stxb:Loan 0001499453 us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember 2020-09-30 0001499453 us-gaap:PassMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-09-30 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-09-30 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-09-30 0001499453 us-gaap:PassMember us-gaap:ConsumerPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:PassMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:PassMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:SpecialMentionMember 2020-09-30 0001499453 us-gaap:SubstandardMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2020-09-30 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2020-09-30 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2020-09-30 0001499453 us-gaap:SubstandardMember us-gaap:ConsumerPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:SubstandardMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:SubstandardMember 2020-09-30 0001499453 us-gaap:DoubtfulMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 us-gaap:DoubtfulMember 2020-09-30 0001499453 us-gaap:PassMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-12-31 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-12-31 0001499453 us-gaap:PassMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:PassMember us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:PassMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:PassMember 2019-12-31 0001499453 us-gaap:SpecialMentionMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-12-31 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-12-31 0001499453 us-gaap:SpecialMentionMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:SpecialMentionMember 2019-12-31 0001499453 us-gaap:SubstandardMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember stxb:OneToFourSingleFamilyResidentialLoansMember 2019-12-31 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember us-gaap:ConstructionLoansMember 2019-12-31 0001499453 us-gaap:SubstandardMember stxb:RealEstatePortfolioSegmentMember stxb:CommercialRealEstateLoansIncludingMultifamilyMember 2019-12-31 0001499453 us-gaap:SubstandardMember us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:SubstandardMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:SubstandardMember 2019-12-31 0001499453 us-gaap:DoubtfulMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 us-gaap:DoubtfulMember 2019-12-31 stxb:Contract 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember stxb:PerformingTroubledDebtRestructuringsMember stxb:RealEstatePortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-01-01 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember 2020-01-01 2020-09-30 0001499453 stxb:NonperformingTroubledDebtRestructuringsMember 2020-01-01 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember stxb:PerformingTroubledDebtRestructuringsMember stxb:RealEstatePortfolioSegmentMember 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:MunicipalAndOtherLoansPortfolioSegmentMember 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember 2020-09-30 0001499453 stxb:NonperformingTroubledDebtRestructuringsMember 2020-09-30 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-01-01 2019-12-31 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember stxb:PerformingTroubledDebtRestructuringsMember stxb:RealEstatePortfolioSegmentMember 2019-01-01 2019-12-31 0001499453 stxb:PerformingTroubledDebtRestructuringsMember 2019-01-01 2019-12-31 0001499453 stxb:NonperformingTroubledDebtRestructuringsMember 2019-01-01 2019-12-31 0001499453 2019-01-01 2019-12-31 0001499453 stxb:PerformingTroubledDebtRestructuringsMember stxb:CommercialAndIndustrialLoansPortfolioSegmentMember 2019-12-31 0001499453 stxb:OneToFourSingleFamilyResidentialLoansMember stxb:PerformingTroubledDebtRestructuringsMember stxb:RealEstatePortfolioSegmentMember 2019-12-31 0001499453 stxb:PerformingTroubledDebtRestructuringsMember 2019-12-31 0001499453 stxb:NonperformingTroubledDebtRestructuringsMember 2019-12-31 0001499453 stxb:Covid19Member 2020-01-01 2020-09-30 0001499453 stxb:Covid19Member 2020-03-01 2020-06-30 0001499453 stxb:Covid19Member 2020-06-30 0001499453 stxb:Covid19Member 2020-09-30 0001499453 stxb:Covid19Member stxb:Second90DayDeferralPeriodMember 2020-09-30 0001499453 stxb:Covid19Member stxb:Third90DayDeferralPeriodMember 2020-09-30 0001499453 stxb:Covid19Member 2020-07-01 2020-09-30 0001499453 us-gaap:CoreDepositsMember 2020-07-01 2020-09-30 0001499453 us-gaap:CoreDepositsMember 2019-07-01 2019-09-30 0001499453 us-gaap:CoreDepositsMember 2020-01-01 2020-09-30 0001499453 us-gaap:CoreDepositsMember 2019-01-01 2019-09-30 0001499453 us-gaap:CoreDepositsMember 2020-09-30 0001499453 stxb:SBALoansMember 2020-07-01 2020-09-30 0001499453 stxb:SBALoansMember 2019-07-01 2019-09-30 0001499453 stxb:SBALoansMember 2019-01-01 2019-09-30 0001499453 us-gaap:ShortTermDebtMember 2020-09-30 0001499453 us-gaap:ShortTermDebtMember 2019-12-31 0001499453 stxb:UnsecuredLineOfCreditMember stxb:ThirdPartyLenderMember 2017-05-31 0001499453 us-gaap:LondonInterbankOfferedRateLIBORMember stxb:UnsecuredLineOfCreditMember stxb:ThirdPartyLenderMember 2017-05-01 2017-05-31 0001499453 stxb:UnsecuredLineOfCreditMember stxb:ThirdPartyLenderMember 2017-05-01 2017-05-31 0001499453 stxb:UnsecuredLineOfCreditMember stxb:ThirdPartyLenderMember 2019-12-31 0001499453 stxb:UnsecuredLineOfCreditMember stxb:ThirdPartyLenderMember 2020-09-30 0001499453 stxb:TwoThousandAndTwentyMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandAndTwentyMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandAndTwentyMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandAndTwentyMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandAndTwentyOneMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandAndTwentyOneMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandAndTwentyOneMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandAndTwentyOneMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyTwoMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyTwoMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyTwoMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyTwoMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyThreeMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyThreeMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyThreeMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyThreeMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyFourMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyFourMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyFourMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyFourMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyFiveMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyFiveMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandTwentyFiveMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandTwentyFiveMember srt:MaximumMember 2019-12-31 0001499453 stxb:TwoThousandTwentySixToTwoThousandThirtyTwoMember srt:MinimumMember 2020-09-30 0001499453 stxb:TwoThousandTwentySixToTwoThousandThirtyTwoMember srt:MaximumMember 2020-09-30 0001499453 stxb:TwoThousandTwentySixToTwoThousandThirtyTwoMember srt:MinimumMember 2019-12-31 0001499453 stxb:TwoThousandTwentySixToTwoThousandThirtyTwoMember srt:MaximumMember 2019-12-31 0001499453 us-gaap:LongTermDebtMember 2020-09-30 0001499453 us-gaap:LongTermDebtMember 2019-12-31 0001499453 stxb:UnsecuredLineOfCreditMember 2020-09-30 stxb:LineOfCredit 0001499453 stxb:UnsecuredLineOfCreditMember 2020-01-01 2020-09-30 0001499453 stxb:PaycheckProtectionProgramLiquidityFacilityMember 2020-09-30 0001499453 stxb:SubordinatedNotesDue2030Member 2020-07-24 2020-07-24 0001499453 stxb:SubordinatedNotesDue2030Member 2020-07-24 0001499453 stxb:SubordinatedNotesDue2030Member 2020-09-30 0001499453 us-gaap:SecuredDebtMember 2020-09-30 0001499453 stxb:TwoThousandEightStockPlanMember 2019-12-31 0001499453 stxb:TwoThousandEightStockPlanMember 2020-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember 2019-12-31 0001499453 stxb:TwoThousandSeventeenStockPlanMember 2020-09-30 0001499453 us-gaap:RestrictedStockUnitsRSUMember stxb:TwoThousandSeventeenStockPlanMember 2020-01-01 2020-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember us-gaap:RestrictedStockUnitsRSUMember 2019-12-31 0001499453 stxb:TwoThousandSeventeenStockPlanMember us-gaap:RestrictedStockUnitsRSUMember 2020-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember us-gaap:RestrictedStockUnitsRSUMember 2020-07-01 2020-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember us-gaap:RestrictedStockUnitsRSUMember 2019-07-01 2019-09-30 0001499453 stxb:TwoThousandSeventeenStockPlanMember us-gaap:RestrictedStockUnitsRSUMember 2019-09-30 0001499453 stxb:BankFourTexasWarrantsMember 2020-09-30 0001499453 stxb:BankFourTexasWarrantsMember 2020-01-01 2020-09-30 0001499453 stxb:Bank4TexasWarrantsMember 2019-12-31 0001499453 stxb:Bank4TexasWarrantsMember 2020-09-30 0001499453 stxb:OasisWarrantsMember 2020-01-01 2020-09-30 0001499453 stxb:OasisWarrantsMember 2020-09-30 0001499453 stxb:OasisWarrantsMember 2020-07-01 2020-09-30 0001499453 stxb:CommitmentsForExposureToCreditLossMember us-gaap:UnfundedLoanCommitmentMember 2020-09-30 0001499453 stxb:CommitmentsForExposureToCreditLossMember us-gaap:UnfundedLoanCommitmentMember 2019-12-31 0001499453 us-gaap:UnfundedLoanCommitmentMember 2020-09-30 0001499453 us-gaap:UnfundedLoanCommitmentMember 2019-12-31 0001499453 stxb:CommercialAndStandbyLettersOfCreditMember 2020-09-30 0001499453 stxb:CommercialAndStandbyLettersOfCreditMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel1Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateBondSecuritiesMember 2020-09-30 0001499453 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateBondSecuritiesMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel3Member stxb:SBAServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 stxb:SBAServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel1Member us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:USTreasurySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:USStatesAndPoliticalSubdivisionsMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel3Member stxb:SBAServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 stxb:SBAServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2019-12-31 0001499453 stxb:ThirdPartyAppraisalsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2020-09-30 0001499453 us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 stxb:ThirdPartyAppraisalsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2019-12-31 0001499453 us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 srt:WeightedAverageMember stxb:MeasurementInputCollateralDiscountsAndEstimatedCostToSellMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2020-09-30 0001499453 srt:WeightedAverageMember us-gaap:MeasurementInputPrepaymentRateMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 srt:WeightedAverageMember us-gaap:MeasurementInputDiscountRateMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0001499453 srt:WeightedAverageMember stxb:MeasurementInputCollateralDiscountsAndEstimatedCostToSellMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2019-12-31 0001499453 srt:WeightedAverageMember us-gaap:MeasurementInputPrepaymentRateMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 srt:WeightedAverageMember us-gaap:MeasurementInputDiscountRateMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2019-12-31 0001499453 srt:WeightedAverageMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0001499453 srt:WeightedAverageMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001499453 srt:MinimumMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0001499453 srt:MinimumMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001499453 srt:MaximumMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0001499453 srt:MaximumMember us-gaap:FairValueMeasurementsNonrecurringMember stxb:MeasurementInputCollateralDiscountsMember us-gaap:FairValueInputsLevel3Member 2019-12-31 0001499453 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2020-09-30 0001499453 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-09-30 0001499453 us-gaap:FairValueInputsLevel1Member 2020-09-30 0001499453 us-gaap:FairValueInputsLevel2Member 2020-09-30 0001499453 us-gaap:FairValueInputsLevel3Member 2020-09-30 0001499453 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2019-12-31 0001499453 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2019-12-31 0001499453 us-gaap:FairValueInputsLevel1Member 2019-12-31 0001499453 us-gaap:FairValueInputsLevel2Member 2019-12-31 0001499453 us-gaap:FairValueInputsLevel3Member 2019-12-31 0001499453 us-gaap:SubsequentEventMember stxb:ClearLakeBranchSaleMember 2020-10-16 2020-10-16 0001499453 stxb:ClearLakeBranchSaleMember srt:ScenarioForecastMember 2020-10-01 2020-12-31 0001499453 us-gaap:SubsequentEventMember stxb:JacksboroBranchSaleMember 2020-10-20 2020-10-20

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

 

FORM 10-Q

 

(Mark One)

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2020

OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 

For the transition period from                 to                

Commission File Number: 001-38484

 

Spirit of Texas Bancshares, Inc.

(Exact name of registrant as specified in its charter)

 

 

Texas

90-0499552

( State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer
Identification No.)

 

 

1836 Spirit of Texas Way

Conroe, TX

77301

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (936) 521-1836

Former name, former address and former fiscal year, if changed since last report:

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

 

Trading

Symbol(s)

 

Name of each exchange on which registered

Common Stock, no par value

 

STXB

 

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes      No  

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes      No  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

 

Large accelerated filer

 

  

Accelerated filer

 

 

 

 

 

Non-accelerated filer

 

☐  

  

Smaller reporting company

 

 

 

 

 

 

 

 

 

 

 

 

Emerging growth company

 

 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  

As of October 26, 2020, the registrant had 17,290,133 shares of common stock, no par value, outstanding.

 

 

 

 


TABLE OF CONTENTS

 

 

 

Page

PART I.

FINANCIAL INFORMATION

3

Item 1.

Consolidated Financial Statements (Unaudited)

3

 

Consolidated Balance Sheets

3

 

Consolidated Statements of Income

4

 

Consolidated Statements of Comprehensive Income

5

 

Consolidated Statements of Changes in Stockholders’ Equity

6

 

Consolidated Statements of Cash Flows

7

 

Notes to Unaudited Consolidated Financial Statements

8

Item 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

35

Item 3.

Quantitative and Qualitative Disclosures About Market Risk

66

Item 4.

Controls and Procedures

66

PART II.

OTHER INFORMATION

67

Item 1.

Legal Proceedings

67

Item 1A.

Risk Factors

67

Item 2.

Unregistered Sales of Equity Securities and Use of Proceeds

69

Item 3.

Defaults Upon Senior Securities

69

Item 4.

Mine Safety Disclosures

69

Item 5.

Other Information

69

Item 6.

Exhibits

70

Signatures

71

 

2


PART I.     FINANCIAL INFORMATION

Item 1.Consolidated Financial Statements (Unaudited)

 

SPIRIT OF TEXAS BANCSHARES, INC. AND SUBSIDIARY

CONSOLIDATED BALANCE SHEETS

(Unaudited)

(Dollars in thousands, except per share data)

 

 

 

September 30,

2020

 

 

December 31,

2019

 

Assets:

 

 

 

 

 

 

 

 

Cash and due from banks

 

$

29,345

 

 

$

32,490

 

Interest-bearing deposits in other banks

 

 

121,739

 

 

 

293,467

 

Total cash and cash equivalents

 

 

151,084

 

 

 

325,957

 

Time deposits in other banks

 

 

 

 

 

490

 

Investment securities:

 

 

 

 

 

 

 

 

Available for sale securities, at fair value

 

 

119,814

 

 

 

96,937

 

Total investment securities

 

 

119,814

 

 

 

96,937

 

Loans held for sale

 

 

4,287

 

 

 

3,989

 

Loans:

 

 

 

 

 

 

 

 

Loans held for investment

 

 

2,452,353

 

 

 

1,767,182

 

Less: allowance for loan and lease losses

 

 

(12,207

)

 

 

(6,737

)

Loans, net

 

 

2,440,146

 

 

 

1,760,445

 

Premises and equipment, net

 

 

82,734

 

 

 

75,150

 

Accrued interest receivable

 

 

11,612

 

 

 

6,507

 

Other real estate owned and repossessed assets

 

 

302

 

 

 

3,653

 

Goodwill

 

 

77,681

 

 

 

68,503

 

Core deposit intangible

 

 

8,698

 

 

 

11,472

 

SBA servicing asset

 

 

3,051

 

 

 

3,355

 

Deferred tax asset, net

 

 

494

 

 

 

-

 

Bank-owned life insurance

 

 

15,878

 

 

 

15,610

 

Federal Home Loan Bank and other bank stock, at cost

 

 

5,709

 

 

 

8,310

 

Other assets

 

 

3,580

 

 

 

4,244

 

Total assets

 

$

2,925,070

 

 

$

2,384,622

 

Liabilities and Stockholders' Equity

 

 

 

 

 

 

 

 

Liabilities:

 

 

 

 

 

 

 

 

Deposits:

 

 

 

 

 

 

 

 

Transaction accounts:

 

 

 

 

 

 

 

 

Noninterest-bearing

 

$

667,199

 

 

$

444,822

 

Interest-bearing

 

 

940,930

 

 

 

803,557

 

Total transaction accounts

 

 

1,608,129

 

 

 

1,248,379

 

Time deposits

 

 

679,387

 

 

 

679,747

 

Total deposits

 

 

2,287,516

 

 

 

1,928,126

 

Accrued interest payable

 

 

1,321

 

 

 

1,219

 

Short-term borrowings

 

 

10,000

 

 

 

 

Long-term borrowings

 

 

267,746

 

 

 

105,140

 

Deferred tax liability, net

 

 

 

 

 

672

 

Other liabilities

 

 

6,966

 

 

 

3,760

 

Total liabilities

 

 

2,573,549

 

 

 

2,038,917

 

Commitments and contingencies (Note 13)

 

 

 

 

 

 

 

 

Stockholders' Equity:

 

 

 

 

 

 

 

 

Preferred stock, $1 par value; 5 million shares authorized; 0 shares

   issued and outstanding

 

 

 

 

 

 

Common stock, no par value; 50 million shares authorized; 18,318,678 and

   18,272,245 shares issued; 17,316,313 and 18,258,222 shares outstanding

 

 

298,509

 

 

 

297,188

 

Retained earnings

 

 

65,783

 

 

 

48,139

 

Accumulated other comprehensive income (loss)

 

 

(237

)

 

 

667

 

Treasury stock

 

 

(12,534

)

 

 

(289

)

Total stockholders' equity

 

 

351,521

 

 

 

345,705

 

Total liabilities and stockholders' equity

 

$

2,925,070

 

 

$

2,384,622

 

 

The accompanying notes are an integral part of these unaudited, consolidated financial statements

3


SPIRIT OF TEXAS BANCSHARES, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(Dollars in thousands, except per share data)

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Interest income:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interest and fees on loans

 

$

29,901

 

 

$

23,064

 

 

$

87,222

 

 

$

62,386

 

Interest and dividends on investment securities

 

 

465

 

 

 

1,143

 

 

 

1,426

 

 

 

3,627

 

Other interest income

 

 

115

 

 

 

794

 

 

 

1,200

 

 

 

2,172

 

Total interest income

 

 

30,481

 

 

 

25,001

 

 

 

89,848

 

 

 

68,185

 

Interest expense:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interest on deposits

 

 

3,392

 

 

 

4,097

 

 

 

11,844

 

 

 

11,106

 

Interest on FHLB advances and other borrowings

 

 

875

 

 

 

425

 

 

 

1,941

 

 

 

1,414

 

Total interest expense

 

 

4,267

 

 

 

4,522

 

 

 

13,785

 

 

 

12,520

 

Net interest income

 

 

26,214

 

 

 

20,479

 

 

 

76,063

 

 

 

55,665

 

Provision for loan losses

 

 

2,831

 

 

 

900

 

 

 

6,840

 

 

 

2,081

 

Net interest income after provision for loan losses

 

 

23,383

 

 

 

19,579

 

 

 

69,223

 

 

 

53,584

 

Noninterest income:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service charges and fees

 

 

1,525

 

 

 

866

 

 

 

4,106

 

 

 

2,564

 

SBA loan servicing fees

 

 

619

 

 

 

234

 

 

 

885

 

 

 

538

 

Mortgage referral fees

 

 

428

 

 

 

173

 

 

 

987

 

 

 

481

 

Swap referral fees

 

 

494

 

 

 

 

 

 

1,336

 

 

 

 

Gain on sales of loans, net

 

 

612

 

 

 

1,151

 

 

 

1,402

 

 

 

3,339

 

Gain on sales of investment securities

 

 

1,031

 

 

 

 

 

 

1,031

 

 

 

2,134

 

Other noninterest income

 

 

110

 

 

 

257

 

 

 

349

 

 

 

457

 

Total noninterest income

 

 

4,819

 

 

 

2,681

 

 

 

10,096

 

 

 

9,513

 

Noninterest expense:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Salaries and employee benefits

 

 

11,365

 

 

 

9,502

 

 

 

31,100

 

 

 

25,391

 

Occupancy and equipment expenses

 

 

2,222

 

 

 

1,710

 

 

 

7,298

 

 

 

4,662

 

Professional services

 

 

555

 

 

 

791

 

 

 

2,166

 

 

 

2,854

 

Data processing and network

 

 

1,002

 

 

 

884

 

 

 

2,594

 

 

 

2,100

 

Regulatory assessments and insurance

 

 

517

 

 

 

(256

)

 

 

1,298

 

 

 

157

 

Amortization of intangibles

 

 

919

 

 

 

1,015

 

 

 

2,784

 

 

 

2,624

 

Advertising

 

 

333

 

 

 

134

 

 

 

605

 

 

 

398

 

Marketing

 

 

18

 

 

 

136

 

 

 

216

 

 

 

407

 

Telephone expense

 

 

563

 

 

 

289

 

 

 

1,453

 

 

 

767

 

Conversion expense

 

 

279

 

 

 

314

 

 

 

1,825

 

 

 

1,918

 

Other operating expenses

 

 

1,520

 

 

 

1,037

 

 

 

5,018

 

 

 

3,107

 

Total noninterest expense

 

 

19,293

 

 

 

15,556

 

 

 

56,357

 

 

 

44,385

 

Income before income tax expense

 

 

8,909

 

 

 

6,704

 

 

 

22,962

 

 

 

18,712

 

Income tax expense

 

 

1,821

 

 

 

1,374

 

 

 

4,106

 

 

 

3,745

 

Net income

 

$

7,088

 

 

$

5,330

 

 

$

18,856

 

 

$

14,967

 

Earnings per common share:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic

 

$

0.41

 

 

$

0.35

 

 

$

1.07

 

 

$

1.09

 

Diluted

 

$

0.41

 

 

$

0.34

 

 

$

1.06

 

 

$

1.05

 

Weighted average common shares outstanding:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic

 

 

17,340,898

 

 

 

15,370,480

 

 

 

17,701,003

 

 

 

13,774,776

 

Diluted

 

 

17,383,427

 

 

 

15,771,249

 

 

 

17,771,665

 

 

 

14,198,926

 

 

The accompanying notes are an integral part of these unaudited, consolidated financial statements

4


SPIRIT OF TEXAS BANCSHARES, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(Dollars in thousands)

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Net income

 

$

7,088

 

 

$

5,330

 

 

$

18,856

 

 

$

14,967

 

Other comprehensive income (loss):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unrealized net holding gains (losses) on investment securities available for sale, net of

   (tax) and benefit of $182, $(158), $22, and $(857), respectively

 

 

(690

)

 

 

595

 

 

 

(85

)

 

 

3,225

 

Reclassification adjustment for realized (gains) on investment securities available

   for sale included in net income, net of taxes of $212, $0, $212, and $529, respectively

 

 

(819

)

 

 

 

 

 

(819

)

 

 

(1,988

)

Total other comprehensive income (loss)

 

 

(1,509

)

 

 

595

 

 

 

(904

)

 

 

1,237

 

Total comprehensive income

 

$

5,579

 

 

$

5,925

 

 

$

17,952

 

 

$

16,204

 

 

The accompanying notes are an integral part of these unaudited, consolidated financial statements

5


SPIRIT OF TEXAS BANCSHARES, INC. AND SUBSIDIARY

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

(Unaudited)

(Dollars in thousands)

 

 

 

Shares of

Common

 

 

Shares of

Preferred

 

 

Common

 

 

Preferred

 

 

Retained

 

 

Treasury

 

 

Accumulated

Other

Comprehensive

 

 

Total

Stockholders'

 

 

 

Stock

 

 

Stock

 

 

Stock

 

 

Stock

 

 

Earnings

 

 

Stock

 

 

Income

 

 

Equity

 

Three Months Ended September 30,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance as of July 1, 2019

 

 

13,790,332

 

 

 

 

 

$

204,974

 

 

$

 

 

$

36,640

 

 

$

 

 

$

2,496

 

 

$

244,110

 

Net income

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5,330

 

 

 

 

 

 

 

 

 

5,330

 

Shares issued in offering, net

 

 

2,300,000