v3.26.1
Schedule H, Line 4(i) - Schedule Of Assets (Held At End Of Year) 2 (Details) - EBP 42-1039071 002 [Member]
12 Months Ended
Dec. 31, 2025
USD ($)
Minimum [Member]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 4.25%
Maximum [Member]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 9.50%
Investment, Identifier [Axis]: AmericanFundsEUPACFundClassR6Member  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,136,915
Investment, Identifier [Axis]: AmericanFundsGrowthFundofAmericaR6Member  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 3,701,368
Investment, Identifier [Axis]: AmericanFundsIncomeFundofAmericaFundClassR6Member  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 936,732
Investment, Identifier [Axis]: AmericanFundsWashingtonMutualInvestorsFundClassR6Member  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,819,895
Investment, Identifier [Axis]: AmesNationalCorporationCommonStockMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,101,230
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: CommonCollectiveTrustVanguardRetirementSavingsTrustIIIMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Collective Trust [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,989,677
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: CommonStockFundMember  
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,111,537
Investment, Identifier [Axis]: DavisNewYorkVentureFundClassYMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 826,992
Investment, Identifier [Axis]: InvescoDevelopingMarketsFundClassR6Member  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 638,299
Investment, Identifier [Axis]: MutualFundMember  
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 74,942,125
Investment, Identifier [Axis]: PIMCOTotalReturnFundInstitutionalClassMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 535,833
Investment, Identifier [Axis]: ParticipationLoansMember  
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 0
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: ParticipationLoansMember | Minimum [Member]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 425.00%
EBP, Asset Held for Investment, Participant Loan, Maturity Date Jan. 31, 2026
Investment, Identifier [Axis]: ParticipationLoansMember | Maximum [Member]  
EBP, Asset Held for Investment, Participant Loan, Interest Rate 950.00%
Investment, Identifier [Axis]: VGIFederalMoneyMarketAccountMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 10,307
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: Vanguard500IndexFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 7,628,521
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardBalancedIndexFundInstitutionalSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 7,363,285
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardCashReservesFederalMMFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,536,312
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardMidCapIndexFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 4,094,938
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardShortTermInflationProtectedSecIdxFundAdmShrMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 334,121
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardSmallCapIndexFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 2,261,452
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2020FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 535,015
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2025FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 8,590,669
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2030FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 877,311
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2035FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 9,077,793
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2040FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 314,327
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2045FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 4,898,827
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2050FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 53,687
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2055FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 3,901,014
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2060FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 597,600
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2065FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 373,250
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirement2070FundMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 28,616
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTargetRetirementIncomeMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,659,930
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTotalBondMarketIndexFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,199,294
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTotalInternationalStockIndexFundAdmiralShrMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 1,501,320
EBP, Asset Held for Investment, Party-in-Interest [true false] true
Investment, Identifier [Axis]: VanguardTotalStockMarketIndexFundAdmiralSharesMember  
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] EBP, Participant-Directed [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value $ 7,518,809
EBP, Asset Held for Investment, Party-in-Interest [true false] true