XML 44 R97.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value Measurements Financial assets and liabilities measured at fair value on a recurring basis (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Level I [Member]    
Mortgage-backed securities:    
Mortgage loans held for sale   $ 0us-gaap_LoansHeldForSaleFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
Mortgage interest rate locks 0us-gaap_DerivativeAssets
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= us-gaap_FairValueInputsLevel1Member
0us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Mortgage servicing rights   0mbrg_MortgageServicingRightsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Mortgage banking hedge instruments   0mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level II [Member]    
Mortgage-backed securities:    
Mortgage loans held for sale   33,175us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Mortgage interest rate locks 50us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
334us-gaap_DerivativeAssets
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= us-gaap_FairValueInputsLevel2Member
Mortgage servicing rights   203mbrg_MortgageServicingRightsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Mortgage banking hedge instruments   202mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Level III [Member]    
Mortgage-backed securities:    
Mortgage loans held for sale   0us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Mortgage interest rate locks 0us-gaap_DerivativeAssets
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= us-gaap_FairValueInputsLevel3Member
0us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Mortgage servicing rights   0mbrg_MortgageServicingRightsFairValueDisclosure
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= us-gaap_FairValueInputsLevel3Member
Mortgage banking hedge instruments   0mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Recurring [Member]    
Assets:    
U.S. government agencies 41,397mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
21,339mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Obligations of states and political subdivisions 57,740mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
67,238mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities:    
Agency 173,213mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
168,010mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
Non-agency 28,123mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
21,934mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Other asset backed securities 31,713mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
34,418mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Corporate preferred stock   74mbrg_CorporatePreferredStockFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
Corporate securities 16,077mbrg_CorporateSecuritiesFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
15,410mbrg_CorporateSecuritiesFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
Mortgage loans held for sale   33,175us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Mortgage interest rate locks   16us-gaap_DerivativeAssets
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest rate swaps 50us-gaap_HedgingAssetsCurrent
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
333us-gaap_HedgingAssetsCurrent
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Mortgage servicing rights   203mbrg_MortgageServicingRightsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Mortgage banking hedge instruments   202mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Liabilities:    
Interest rate swaps 337us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
303us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level I [Member]    
Assets:    
U.S. government agencies 0mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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0mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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Obligations of states and political subdivisions 0mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
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0mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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Mortgage-backed securities:    
Agency 0mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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0mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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Non-agency 0mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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0mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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Other asset backed securities 0mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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0mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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Corporate preferred stock   0mbrg_CorporatePreferredStockFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
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Corporate securities 0mbrg_CorporateSecuritiesFairValueDisclosure
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0mbrg_CorporateSecuritiesFairValueDisclosure
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Mortgage loans held for sale   0us-gaap_LoansHeldForSaleFairValueDisclosure
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Mortgage interest rate locks   0us-gaap_DerivativeAssets
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Interest rate swaps 0us-gaap_HedgingAssetsCurrent
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0us-gaap_HedgingAssetsCurrent
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Mortgage servicing rights   0mbrg_MortgageServicingRightsFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
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Mortgage banking hedge instruments   0mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
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Liabilities:    
Interest rate swaps 0us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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0us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level II [Member]    
Assets:    
U.S. government agencies 41,397mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
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21,339mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
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Obligations of states and political subdivisions 57,740mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
67,238mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Mortgage-backed securities:    
Agency 173,213mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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168,010mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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Non-agency 28,123mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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21,934mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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Other asset backed securities 31,713mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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34,418mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
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= us-gaap_FairValueMeasurementsRecurringMember
Corporate preferred stock   74mbrg_CorporatePreferredStockFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
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= us-gaap_FairValueMeasurementsRecurringMember
Corporate securities 16,077mbrg_CorporateSecuritiesFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
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14,922mbrg_CorporateSecuritiesFairValueDisclosure
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Mortgage loans held for sale   33,175us-gaap_LoansHeldForSaleFairValueDisclosure
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= us-gaap_FairValueInputsLevel2Member
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Mortgage interest rate locks   16us-gaap_DerivativeAssets
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= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
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Interest rate swaps 50us-gaap_HedgingAssetsCurrent
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/ us-gaap_FairValueByMeasurementFrequencyAxis
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333us-gaap_HedgingAssetsCurrent
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= us-gaap_FairValueInputsLevel2Member
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Mortgage servicing rights   203mbrg_MortgageServicingRightsFairValueDisclosure
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Mortgage banking hedge instruments   202mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
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Liabilities:    
Interest rate swaps 337us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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303us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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= us-gaap_FairValueMeasurementsRecurringMember
Recurring [Member] | Level III [Member]    
Assets:    
U.S. government agencies 0mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
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0mbrg_UnitedStatesGovernmentAgencyDebtSecuritiesFairValueDisclosure
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Obligations of states and political subdivisions 0mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
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0mbrg_ObligationsOfStatesAndPoliticalSubdivisionsFairValueDisclosure
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Mortgage-backed securities:    
Agency 0mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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0mbrg_UsAgencyMortgageBackedSecuritiesFairValueDisclosure
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Non-agency 0mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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0mbrg_NonAgencyMortgageBackedSecuritiesFairValueDisclosure
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Other asset backed securities 0mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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0mbrg_OtherAssetBackedSecuritiesFairValueDisclosure
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Corporate preferred stock   0mbrg_CorporatePreferredStockFairValueDisclosure
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= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Corporate securities    488mbrg_CorporateSecuritiesFairValueDisclosure
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Mortgage loans held for sale   0us-gaap_LoansHeldForSaleFairValueDisclosure
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Mortgage interest rate locks   0us-gaap_DerivativeAssets
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Interest rate swaps 0us-gaap_HedgingAssetsCurrent
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Mortgage servicing rights   0mbrg_MortgageServicingRightsFairValueDisclosure
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Mortgage banking hedge instruments   0mbrg_MortgageBankingHedgeInstrumentsFairValueDisclosure
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Liabilities:    
Interest rate swaps $ 0us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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$ 0us-gaap_LiabilitiesRelatedToInvestmentContractsFairValueDisclosure
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