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FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Available-for-sale Securities [Abstract]
Total debt securities	$ 676,159us-gaap_AvailableForSaleSecuritiesDebtSecurities	$ 657,870us-gaap_AvailableForSaleSecuritiesDebtSecurities
Total available for sale securities	1,202,536us-gaap_AvailableForSaleSecurities	1,140,216us-gaap_AvailableForSaleSecurities
Held-to-maturity Securities [Abstract]
Total held to maturity securities	311,999us-gaap_HeldToMaturitySecuritiesFairValue	279,312us-gaap_HeldToMaturitySecuritiesFairValue
Level 1 [Member]
Available-for-sale Securities [Abstract]
Total available for sale securities	966us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	825us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Held-to-maturity Securities [Abstract]
Total held to maturity securities	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 1 [Member] | One to Four Family Residential Mortgage Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 1 [Member] | Commercial and Multi-family Real Estate Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 1 [Member] | Agricultural Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 1 [Member] | Consumer Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 1 [Member] | Commercial Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Level 2 [Member]
Available-for-sale Securities [Abstract]
Total available for sale securities	1,201,570us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	1,139,391us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Held-to-maturity Securities [Abstract]
Total held to maturity securities	311,999us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	279,312us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 2 [Member] | One to Four Family Residential Mortgage Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 2 [Member] | Commercial and Multi-family Real Estate Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 2 [Member] | Agricultural Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 2 [Member] | Consumer Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 2 [Member] | Commercial Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Level 3 [Member]
Available-for-sale Securities [Abstract]
Total available for sale securities	0us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	0us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Held-to-maturity Securities [Abstract]
Total held to maturity securities	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	630,251us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	504,388us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Total Impaired Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	6,524us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	1,152us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | One to Four Family Residential Mortgage Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	111,355us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	111,254us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Commercial and Multi-family Real Estate Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	270,464us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	234,845us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Agricultural Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	43,101us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	44,398us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Consumer Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	30,889us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	29,580us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_ConsumerLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Commercial Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	21,746us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	25,660us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = us-gaap_CommercialLoanMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Level 3 [Member] | Foreclosed Assets, Net [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member	15us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Recurring [Member]
Available-for-sale Securities [Abstract]
Trust preferred and corporate securities	21,169cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	46,929cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	37,367cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	67,012cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	466,875cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	367,580cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	676,159us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	657,870us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	1,201,570us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	1,139,391us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	966cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	825cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total available for sale securities	1,202,536us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	1,140,216us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Held-to-maturity Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	19,254cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	18,980cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	224,667cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	192,160cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	68,078us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	68,172us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	311,999cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	279,312cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total held to maturity securities	311,999us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	279,312us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level 1 [Member]
Available-for-sale Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	0us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	0us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	966cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	825cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total available for sale securities	966us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	825us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Held-to-maturity Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	0us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	0cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total held to maturity securities	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level 2 [Member]
Available-for-sale Securities [Abstract]
Trust preferred and corporate securities	21,169cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	46,929cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	37,367cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	67,012cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	466,875cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	367,580cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	676,159us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	657,870us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	1,201,570us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	1,139,391us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total available for sale securities	1,201,570us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	1,139,391us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Held-to-maturity Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	19,254cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	18,980cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	224,667cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	192,160cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	68,078us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	68,172us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	311,999cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	279,312cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total held to maturity securities	311,999us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	279,312us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level 3 [Member]
Available-for-sale Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	0us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	0us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsAvailableForSale / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total available for sale securities	0us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Held-to-maturity Securities [Abstract]
Trust preferred and corporate securities	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_TrustPreferredAndCorporateSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Small business administration securities	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_SmallBusinessAdministrationSecuritiesHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions	0cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_ObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Non-bank qualified obligations of states and political subdivisions	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_NonBankQualifiedObligationsOfStatesAndPoliticalSubdivisionsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities	0us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total debt securities	0cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_HeldToMaturitySecuritiesDebtSecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Common equities and mutual funds	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0cash_CommonEquitiesAndMutualFundsHeldToMaturity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Total held to maturity securities	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	0us-gaap_HeldToMaturitySecuritiesFairValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember
Nonrecurring [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	6,524us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	1,167us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Total Impaired Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	6,524us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	1,152us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | One to Four Family Residential Mortgage Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	54us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	222us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Commercial and Multi-family Real Estate Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	662us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	930us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Agricultural Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	5,808us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Foreclosed Assets, Net [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	15us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member] | Total Impaired Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member] | One to Four Family Residential Mortgage Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_OneToFourFamilyResidentialMortgageLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member] | Commercial and Multi-family Real Estate Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_CommercialAndMultifamilyRealEstateLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member] | Agricultural Operating Loans [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_AgriculturalOperatingMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 1 [Member] | Foreclosed Assets, Net [Member]
Fair value of assets measured on non-recurring basis [Abstract]
Fair value	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember	0us-gaap_LoansReceivableFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = cash_ForeclosedAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember
Nonrecurring [Member] | Level 2 [Member]
Fair value of assets measured on non-recurring basis [Abstract]
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