XML 31 R62.htm IDEA: XBRL DOCUMENT v2.4.1.9
Disclosures About Fair Value of Assets and Liabilities - Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other Than Goodwill (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2013
Dec. 31, 2014
Discounted cash flow | State and municipal | Minimum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Maturity/Call date 1 month 1 month  
Blend of US Muni BQ curve A- A-  
Discount rate 0.90%us-gaap_FairValueInputsDiscountRate
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		 0.90%us-gaap_FairValueInputsDiscountRate
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		  
Discounted cash flow | State and municipal | Maximum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Maturity/Call date 15 years 15 years  
Blend of US Muni BQ curve BBB- BBB-  
Discount rate 5.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		 5.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		  
Discounted cash flow | Corporate obligations and Equity securities      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Risk free rate 3 month LIBOR 3 month LIBOR  
Discount to reflect current market conditions 2.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_CorporateDebtSecuritiesandEquitySecuritiesMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		 2.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_CorporateDebtSecuritiesandEquitySecuritiesMember
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		  
Collateral based measurements | Impaired loans (collateral dependent) | Minimum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions and ultimate collectability 0.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		 0.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		  
Collateral based measurements | Impaired loans (collateral dependent) | Maximum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions and ultimate collectability 50.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		 50.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		  
Collateral based measurements | Impaired loans (collateral dependent) | Weighted Average      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions and ultimate collectability 4.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		 3.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		  
Appraisals | Other real estate owned | Minimum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions 0.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		 0.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		  
Appraisals | Other real estate owned | Maximum      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions 20.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		 20.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		  
Appraisals | Other real estate owned | Weighted Average      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Discount to reflect current market conditions 1.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		 7.00%us-gaap_FairValueInputsDiscountForLackOfMarketability
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		  
Significant Unobservable Inputs (Level 3) | Discounted cash flow | State and municipal      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Fair Value 6,163us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		   $ 6,611us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember
Significant Unobservable Inputs (Level 3) | Discounted cash flow | Corporate obligations and Equity securities      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Fair Value 35us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_CorporateDebtSecuritiesandEquitySecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember		   35us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_CorporateDebtSecuritiesandEquitySecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_DiscountedCashFlowMember
Significant Unobservable Inputs (Level 3) | Collateral based measurements | Impaired loans (collateral dependent)      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Fair Value 7,485us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember		   17,134us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_ImpairedLoansMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_CollateralBasedMeasurementsMember
Significant Unobservable Inputs (Level 3) | Appraisals | Other real estate owned      
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]      
Fair Value 663us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember		   $ 5,155us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByAssetClassAxis
= frme_OtherRealEstateOwnedMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_ValuationTechniqueAxis
= frme_AppraisalsMember