XML 48 R27.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans and Allowance for Loan Losses (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
alternative
Mar. 31, 2014
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses $ 265,000us-gaap_ProvisionForLoanAndLeaseLosses $ 323,000us-gaap_ProvisionForLoanAndLeaseLosses $ 629,000us-gaap_ProvisionForLoanAndLeaseLosses
Gross loans 1,053,468,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount   1,060,685,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Less [Abstract]      
Net deferred loan fees, premiums and discounts 180,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums   237,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
Allowance for loan losses 14,106,000us-gaap_LoansAndLeasesReceivableAllowance 13,603,000us-gaap_LoansAndLeasesReceivableAllowance 13,682,000us-gaap_LoansAndLeasesReceivableAllowance
Net loans 1,039,182,000us-gaap_LoansAndLeasesReceivableNetReportedAmount   1,046,766,000us-gaap_LoansAndLeasesReceivableNetReportedAmount
Loans held for sale 868,000us-gaap_LoansReceivableHeldForSaleNet   1,958,000us-gaap_LoansReceivableHeldForSaleNet
Impaired Loans [Abstract]      
Minimum value of loans individually measured for impairment 100,000fmbh_MinimumValueOfLoansIndividuallyMeasuredForImpairment    
Number of alternatives for measuring impaired loans receivable 3fmbh_NumberOfAlternativesForMeasuringImpairedLoansReceivable    
Adversely Classified Loans [Abstract]      
Minimum balance of adversely classified loan in which a detailed analysis is performed 100,000fmbh_MinimumBalanceOfAdverselyClassifiedLoanInWhichDetailedAnalysisIsPerformed    
Non-classified and Watch Loans [Abstract]      
Time period used a a base for loss estimations five-year    
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 13,682,000us-gaap_LoansAndLeasesReceivableAllowance 13,249,000us-gaap_LoansAndLeasesReceivableAllowance 13,249,000us-gaap_LoansAndLeasesReceivableAllowance
Losses charged off (90,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs (80,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs (537,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
Recoveries 249,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery 111,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery 341,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Balance, end of period 14,106,000us-gaap_LoansAndLeasesReceivableAllowance 13,603,000us-gaap_LoansAndLeasesReceivableAllowance 13,682,000us-gaap_LoansAndLeasesReceivableAllowance
Ending Balance [Abstract]      
Individually evaluated for impairment 625,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 359,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 263,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Collectively evaluated for impairment 13,481,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment 13,244,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment 13,419,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Loans [Abstract]      
Ending balance 1,054,156,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges 991,731,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges 1,062,406,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
Ending Balance [Abstract]      
Individually evaluated for impairment 3,392,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment 4,357,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment 3,301,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Collectively evaluated for impairment 1,050,764,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 987,374,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 1,059,105,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Construction and land development      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 27,152,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConstructionLoansMember
  21,627,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConstructionLoansMember
Agricultural real estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 109,419,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_FarmLoansMember
  110,158,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_FarmLoansMember
1-4 Family residential properties      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 174,246,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_FamilyResidentialPropertiesMember
  179,886,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_FamilyResidentialPropertiesMember
Ending Balance [Abstract]      
Period When Loans are Charged-down 180 days    
Multifamily residential properties      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 52,682,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_MultifamilyResidentialPropertiesMember
  53,129,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_MultifamilyResidentialPropertiesMember
Commercial real estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 376,136,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
  380,173,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
Loans Receivable Additional Information [Abstract]      
Debt coverage ratio 1.20x    
Amortization period of loans twenty years    
Commercial real estate | Minimum [Member]      
Loans Receivable Additional Information [Abstract]      
Maximum Loan-to-value Ratio (in hundredths) 65.00%fmbh_LoanToValueRatio
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Commercial real estate | Maximum [Member]      
Loans Receivable Additional Information [Abstract]      
Maximum Loan-to-value Ratio (in hundredths) 80.00%fmbh_LoanToValueRatio
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Loans secured by real estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 739,635,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_RealEstateMember
  744,973,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_RealEstateMember
Agricultural loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 56,898,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalLoansMember
  68,225,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalLoansMember
Commercial and industrial loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 233,192,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
  223,633,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
Loans Receivable Additional Information [Abstract]      
Maximum Loan-to-value Ratio (in hundredths) 80.00%fmbh_LoanToValueRatio
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
   
Amortization period of loans seven years    
Loans Receivable, Time Period one year    
Consumer loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses 4,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
9,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
167,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Gross loans 15,025,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
  15,118,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Less [Abstract]      
Allowance for loan losses 386,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
372,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
386,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 386,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
377,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
377,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Losses charged off (56,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
(45,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
(311,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Recoveries 52,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
31,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
153,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Balance, end of period 386,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
372,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
386,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Collectively evaluated for impairment 386,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
372,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
386,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Loans [Abstract]      
Ending balance 15,355,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
14,500,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
15,102,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
Collectively evaluated for impairment 15,355,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
14,500,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
15,102,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
All other loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 8,718,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_LoansReceivableMember
  8,736,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= us-gaap_LoansReceivableMember
Agricultural and Farm Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 166,300,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalAndFarmLoansMember
  178,400,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalAndFarmLoansMember
Less [Abstract]      
Decrease in loans receivable (12,100,000)us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalAndFarmLoansMember
   
Loans Receivable Additional Information [Abstract]      
Maximum Loan-to-value Ratio (in hundredths) 65.00%fmbh_LoanToValueRatio
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgriculturalAndFarmLoansMember
   
Amortization period of loans twenty five years    
Loans Receivable, Time Period one year    
Other Grain Farming [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 140,800,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_OtherGrainFarmingMember
  155,100,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_OtherGrainFarmingMember
Less [Abstract]      
Decrease in loans receivable (14,400,000)us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable
/ us-gaap_FinancialInstrumentAxis
= fmbh_OtherGrainFarmingMember
   
Motels and Hotels Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 58,000,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_MotelsAndHotelsLoansMember
   
Non-residential Buildings [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 105,100,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_NonResidentialBuildingsMember
   
Residential Buildings [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Gross loans 62,700,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancialInstrumentAxis
= fmbh_ResidentialBuildingsMember
   
Unsecured Open-end Loans [Member]      
Ending Balance [Abstract]      
Period When Loans are Charged-down 180 days    
Other Secured Loans [Member]      
Ending Balance [Abstract]      
Period When Loans are Charged-down 120 days    
Commercial/ Commercial Real Estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses 358,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
(125,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
192,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Less [Abstract]      
Allowance for loan losses 11,459,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,581,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,914,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 10,914,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,646,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,646,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Losses charged off (9,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
(4,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
(86,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Recoveries 196,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
64,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
162,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Balance, end of period 11,459,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,581,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,914,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 625,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
359,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
263,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Collectively evaluated for impairment 10,834,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,222,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
10,651,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Loans [Abstract]      
Ending balance 694,836,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
631,172,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
684,552,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 3,392,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
4,357,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
3,301,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Collectively evaluated for impairment 691,444,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
626,815,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
681,251,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_CommercialCommercialRealEstateMember
Agricultural/ Agricultural Real Estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses (69,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
(31,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
825,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Less [Abstract]      
Allowance for loan losses 1,291,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
503,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
1,360,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 1,360,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
533,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
533,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Losses charged off 0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Recoveries 0us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
1,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
2,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Balance, end of period 1,291,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
503,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
1,360,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Collectively evaluated for impairment 1,291,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
503,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
1,360,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Loans [Abstract]      
Ending balance 165,927,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
158,052,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
178,091,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Collectively evaluated for impairment 165,927,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
158,052,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
178,091,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fmbh_AgricultureagriculturalRealEstateMember
Residential Real Estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses (13,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
5,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
135,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Less [Abstract]      
Allowance for loan losses 753,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
760,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
790,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Loans Receivable Additional Information [Abstract]      
Maximum Loan-to-value Ratio (in hundredths) 80.00%fmbh_LoanToValueRatio
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
   
Amortization period of loans twenty five years    
Balloon period five years    
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 790,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
771,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
771,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Losses charged off (25,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
(31,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
(140,000)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Recoveries 1,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
15,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
24,000us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Balance, end of period 753,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
760,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
790,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Collectively evaluated for impairment 753,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
760,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
790,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Loans [Abstract]      
Ending balance 178,038,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
188,007,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
184,661,000fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Collectively evaluated for impairment 178,038,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
188,007,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
184,661,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
Unallocated      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Loan and Lease Losses (15,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
465,000us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
(690,000)us-gaap_ProvisionForLoanAndLeaseLosses
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Less [Abstract]      
Allowance for loan losses 217,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
1,387,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
232,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Allowance for Loan Losses [Abstract]      
Balance, beginning of period 232,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
922,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
922,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Losses charged off 0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Recoveries 0us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Balance, end of period 217,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
1,387,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
232,000us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Collectively evaluated for impairment 217,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
1,387,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
232,000us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Loans [Abstract]      
Ending balance 0fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0fmbh_LoansAndLeasesReceivableNetOfDeferredIncomeAndOtherCharges
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Ending Balance [Abstract]      
Individually evaluated for impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Collectively evaluated for impairment $ 0us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
$ 0us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember
$ 0us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_UnallocatedFinancingReceivablesMember