Annual report pursuant to Section 13 and 15(d)

Note 9 - Commitments (Details)

v2.4.1.9
Note 9 - Commitments (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2010
Note 9 - Commitments (Details) [Line Items]      
Operating Leases, Future Minimum Payments Due $ 117,638us-gaap_OperatingLeasesFutureMinimumPaymentsDue    
Operating Leases, Rent Expense 166,000us-gaap_LeaseAndRentalExpense 149,000us-gaap_LeaseAndRentalExpense  
Bonus Payment to Each Participant in Key Personnel Incentive Program upon a SaleTransaction 1,000,000mric_BonusPaymentToEachParticipantInKeyPersonnelIncentiveProgramUponASaleTransaction    
Incentive Bonus Payment to One of the Participants as a Percentage of Net Proceeds from the Sale Transaction 1.40%mric_IncentiveBonusPaymentToOneOfTheParticipantsAsAPercentageOfNetProceedsFromTheSaleTransaction    
Net Proceeds from the Sale Transaction Threshold Amount 50,000,000mric_NetProceedsFromTheSaleTransactionThresholdAmount    
Maximum Additional Incentive Bonus Payment to One Participant 700,000mric_MaximumAdditionalIncentiveBonusPaymentToOneParticipant    
Technical Service and Training Agreements [Member]      
Note 9 - Commitments (Details) [Line Items]      
Contractual Obligation 87,000us-gaap_ContractualObligation
/ us-gaap_OtherCommitmentsAxis
= mric_TechnicalServiceAndTrainingAgreementsMember
   
Cardiac EP Business Participation Plan [Member]      
Note 9 - Commitments (Details) [Line Items]      
Equity Method Investment, Ownership Percentage 2.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_OtherCommitmentsAxis
= mric_CardiacEPBusinessParticipationPlanMember
  6.60%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_OtherCommitmentsAxis
= mric_CardiacEPBusinessParticipationPlanMember
Still Employed on July 31, 2015 [Member]      
Note 9 - Commitments (Details) [Line Items]      
Retention Bonuses, Contingent Payment $ 166,667mric_RetentionBonusesContingentPayment
/ us-gaap_StatementScenarioAxis
= mric_StillEmployedOnJuly312015Member