General form of registration statement for all companies including face-amount certificate companies

Note 8 - Stockholders' Equity (Details)

v2.4.1.9
Note 8 - Stockholders' Equity (Details) (USD $)
 0 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 5 Months Ended 1 Months Ended 2 Months Ended
Dec. 05, 2013
Mar. 31, 2014
Jan. 31, 2013
Jul. 31, 2012
Jun. 30, 2012
Feb. 29, 2012
Nov. 30, 2010
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2006
May 31, 2012
Dec. 31, 2013
Oct. 30, 2014
Feb. 27, 2012
Feb. 27, 2012
Oct. 31, 2011
Feb. 27, 2012
Feb. 10, 2012
Dec. 31, 2011
Dec. 15, 2011
Mar. 31, 2010
Jun. 30, 2013
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)     1.20us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights 1.10us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights               1.33us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights 0.95us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights     1.33us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights             0.43us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights      
Stock Issued During Period, Shares, New Issues     9,201,684us-gaap_StockIssuedDuringPeriodSharesNewIssues 5,454,523us-gaap_StockIssuedDuringPeriodSharesNewIssues 1,500,000us-gaap_StockIssuedDuringPeriodSharesNewIssues                                          
Warrants Issued During Period     4,600,842mric_WarrantsIssuedDuringPeriod 2,727,274mric_WarrantsIssuedDuringPeriod           1,190,250mric_WarrantsIssuedDuringPeriod   4,643,842mric_WarrantsIssuedDuringPeriod 7,652,071mric_WarrantsIssuedDuringPeriod                          
Gross Proceeds from Issuance of Private Placement (in Dollars)     $ 11,042,021mric_GrossProceedsFromIssuanceOfPrivatePlacement $ 6,000,000mric_GrossProceedsFromIssuanceOfPrivatePlacement                                            
Proceeds from Issuance of Private Placement (in Dollars)   3,503,314us-gaap_ProceedsFromIssuanceOfPrivatePlacement 9,829,014us-gaap_ProceedsFromIssuanceOfPrivatePlacement 5,516,495us-gaap_ProceedsFromIssuanceOfPrivatePlacement               9,829,014us-gaap_ProceedsFromIssuanceOfPrivatePlacement 5,516,495us-gaap_ProceedsFromIssuanceOfPrivatePlacement                          
Term of Warrants     5 years 5 years                                            
Warrants Issued During Period, Weighted Average Exercise Price (in Dollars per share)     $ 1.75mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice $ 1.45mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice           $ 1.75mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice   $ 1.75mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice $ 1.05mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice                          
Percentage of Volatility Obtained from HVT Function on Bloomberg     100.00%mric_PercentageOfVolatilityObtainedFromHVTFunctionOnBloomberg                                              
Risk-free Interest Rate Term     24 months                                              
Payments for Commissions (in Dollars)     1,104,202us-gaap_PaymentsForCommissions                                              
Payments of Stock Issuance Costs (in Dollars)       480,000us-gaap_PaymentsOfStockIssuanceCosts                                            
Preferred Stock, Shares Authorized                                           25,000,000us-gaap_PreferredStockSharesAuthorized        
Debt Instrument, Face Amount (in Dollars)             3,000,000us-gaap_DebtInstrumentFaceAmount                                      
Debt Instrument, Interest Rate, Stated Percentage             3.50%us-gaap_DebtInstrumentInterestRateStatedPercentage                                      
Debt Conversion, Original Debt, Amount (in Dollars)           10,811,500us-gaap_DebtConversionOriginalDebtAmount1                                        
Debt Instrument, Maturity             10 years                                      
Deferred Offering Costs (in Dollars)     24,219us-gaap_DeferredOfferingCosts                   24,219us-gaap_DeferredOfferingCosts                          
Interest Expense (in Dollars)               288,783us-gaap_InterestExpense 127,693us-gaap_InterestExpense 723,886us-gaap_InterestExpense 363,115us-gaap_InterestExpense 499,839us-gaap_InterestExpense 2,594,807us-gaap_InterestExpense                          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number               7,554,725us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber   7,554,725us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber   7,430,225us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 6,432,127us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber     7,430,225us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber             3,679,977us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                   417,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross   1,219,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross [1] 3,097,400us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross [1]                          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)                   $ 1.05us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice   $ 1.43us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice [1] $ 1.08us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice [1]                          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)                       $ 0.63us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 0.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue                          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)               812,279us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized   812,279us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized   1,160,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized       1,160,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized                    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition                   1 year 6 months   2 years                            
Allocated Share-based Compensation Expense (in Dollars)               192,001us-gaap_AllocatedShareBasedCompensationExpense 345,632us-gaap_AllocatedShareBasedCompensationExpense 555,909us-gaap_AllocatedShareBasedCompensationExpense 988,223us-gaap_AllocatedShareBasedCompensationExpense                              
Treasury Stock, Shares, Retired 325,830us-gaap_TreasuryStockSharesRetired                                                  
Treasury Stock, Retired, Cost Method, Amount (in Dollars) 1,679,234us-gaap_TreasuryStockRetiredCostMethodAmount                                                  
Selling, General and Administrative Expenses [Member] | Service Provider [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Allocated Share-based Compensation Expense (in Dollars)                       14,805us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_ServiceProviderMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember 		863,253us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_ServiceProviderMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember 		                         
Series A Convertible Preferred Stock [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Preferred Stock Issued During Period, Shares, New Issues                           7,965,000mric_PreferredStockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= mric_SeriesAConvertiblePreferredStockMember 		                       
Convertible Preferred Stock, Number of Preferred Shares Converted into One Common Shares                           4mric_ConvertiblePreferredStockNumberOfPreferredSharesConvertedIntoOneCommonShares
/ us-gaap_StatementClassOfStockAxis
= mric_SeriesAConvertiblePreferredStockMember 		                  1mric_ConvertiblePreferredStockNumberOfPreferredSharesConvertedIntoOneCommonShares
/ us-gaap_StatementClassOfStockAxis
= mric_SeriesAConvertiblePreferredStockMember 		   
Stock Issued During Period, Shares, Conversion of Convertible Securities           7,965,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= mric_SeriesAConvertiblePreferredStockMember 		                                       
Issued to Sub-Placement Agents [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Warrants Issued During Period       409,093mric_WarrantsIssuedDuringPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToSubPlacementAgentsMember 		                                           
Warrants Issued During Period, Weighted Average Exercise Price (in Dollars per share)       $ 1.10mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToSubPlacementAgentsMember 		                                           
Payments of Stock Issuance Costs (in Dollars)     133,024us-gaap_PaymentsOfStockIssuanceCosts
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToSubPlacementAgentsMember 		                                             
Jan 2013 Financing Transaction [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Warrants Issued During Period, Exercise Price (in Dollars per share)       $ 1.41mric_WarrantsIssuedDuringPeriodExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_Jan2013FinancingTransactionMember 		                                           
Issued to Two Non-Employee Directors [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)                             1.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToTwoNonEmployeeDirectorsMember 		                     
Warrants Issued During Period                             1,250,000mric_WarrantsIssuedDuringPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToTwoNonEmployeeDirectorsMember 		                     
Term of Warrants                             5 years                      
Warrants Issued During Period, Value (in Dollars)                             514,250mric_WarrantsIssuedDuringPeriodValue
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToTwoNonEmployeeDirectorsMember 		                     
Issued to Third Parties [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)                         1.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToThirdPartiesMember 		                         
Warrants Issued During Period                         421,666mric_WarrantsIssuedDuringPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToThirdPartiesMember 		                         
Warrants Issued During Period, Value (in Dollars)                         349,003mric_WarrantsIssuedDuringPeriodValue
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_IssuedToThirdPartiesMember 		                         
Service Provider [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Warrants Issued During Period                       43,000mric_WarrantsIssuedDuringPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_ServiceProviderMember 		                           
Term of Warrants                   5 years   5 years                            
Warrants Issued During Period, Weighted Average Exercise Price (in Dollars per share)                       $ 1.75mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_ServiceProviderMember 		                           
Warrants Issued During Period, Value (in Dollars)                       14,805mric_WarrantsIssuedDuringPeriodValue
/ us-gaap_ClassOfWarrantOrRightAxis
= mric_ServiceProviderMember 		                           
Investment from Non-employee Directors [Member] | Subsequent Event [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Proceeds from Issuance of Private Placement (in Dollars)   1,100,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement
/ us-gaap_StatementEquityComponentsAxis
= mric_InvestmentFromNonemployeeDirectorsMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember 		                                               
Investment from Non-employee Directors [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Proceeds from Issuance of Private Placement (in Dollars)   1,100,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement
/ us-gaap_StatementEquityComponentsAxis
= mric_InvestmentFromNonemployeeDirectorsMember 		402,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement
/ us-gaap_StatementEquityComponentsAxis
= mric_InvestmentFromNonemployeeDirectorsMember 		269,980us-gaap_ProceedsFromIssuanceOfPrivatePlacement
/ us-gaap_StatementEquityComponentsAxis
= mric_InvestmentFromNonemployeeDirectorsMember 		                                           
Exercise Price of $1.75 [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                               200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= mric_ExercisePriceOf1.75Member 		                   
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)                               $ 1.75us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= mric_ExercisePriceOf1.75Member 		                   
Subsequent Event [Member] | Executive Officer [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                                 2,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember 		                 
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)                                 $ 1.13us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember 		                 
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                                 3 years                  
Subsequent Event [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Proceeds from Issuance of Private Placement (in Dollars)   3,400,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember 		                                               
Summer 2011 Notes [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Debt Instrument, Face Amount (in Dollars)                                             1,310,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mric_Summer2011NotesMember 		     
Debt Instrument, Interest Rate, Stated Percentage                                             15.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mric_Summer2011NotesMember 		     
Debt Instrument, Convertible, Conversion Price (in Dollars per share)                                             $ 0.60us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mric_Summer2011NotesMember 		     
Debt Conversion, Original Debt, Amount (in Dollars)                                   1,425,865us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= mric_Summer2011NotesMember 		               
Debt Conversion, Converted Instrument, Shares Issued                                   2,376,447us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= mric_Summer2011NotesMember 		               
March 2010 Notes [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Debt Instrument, Face Amount (in Dollars)                                                 4,071,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mric_March2010NotesMember 		 
Debt Instrument, Interest Rate, Stated Percentage                                                 10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mric_March2010NotesMember 		 
Debt Instrument, Convertible, Conversion Price (in Dollars per share)                                                 $ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mric_March2010NotesMember 		 
Debt Conversion, Original Debt, Amount (in Dollars)                                   4,868,017us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= mric_March2010NotesMember 		               
Debt Conversion, Converted Instrument, Shares Issued                                   4,868,041us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= mric_March2010NotesMember 		               
The 2011 Unit Offering Note [Member] | Unamortized Discount [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Interest Expense (in Dollars)                                     1,063,018us-gaap_InterestExpense
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember
/ us-gaap_NatureOfExpenseAxis
= mric_UnamortizedDiscountMember 		             
The 2011 Unit Offering Note [Member] | Unamortized Deferred Offering Costs [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Interest Expense (in Dollars)                                     785,239us-gaap_InterestExpense
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember
/ us-gaap_NatureOfExpenseAxis
= mric_UnamortizedDeferredOfferingCostsMember 		             
The 2011 Unit Offering Note [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)                                   0.60us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		0.60us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  0.60us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Warrants Issued During Period                                     2,715,250mric_WarrantsIssuedDuringPeriod
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  941,288mric_WarrantsIssuedDuringPeriod
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Term of Warrants                                       5 years            
Warrants Issued During Period, Weighted Average Exercise Price (in Dollars per share)                                       $ 0.75mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		           
Debt Instrument, Face Amount (in Dollars)                                       100,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		           
Debt Instrument, Interest Rate, Stated Percentage                                       10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		           
Debt Instrument, Convertible, Conversion Price (in Dollars per share)                                   $ 0.60us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		$ 0.60us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  $ 0.60us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Debt Conversion, Original Debt, Amount (in Dollars)                                     5,491,929us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		             
Debt Conversion, Converted Instrument, Shares Issued                                     9,153,239us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		             
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                                       50,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		           
Debt Instrument, Maturity                                       3 years            
Number of Unit Offering Notes Sold                                     54.305mric_NumberOfUnitOfferingNotesSold
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  38.055mric_NumberOfUnitOfferingNotesSold
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Aggregate Principal Amount of Unit Offering Notes Sold (in Dollars)                                     5,430,500mric_AggregatePrincipalAmountOfUnitOfferingNotesSold
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		             
Placement Agent Cash Fee as Percentage of Gross Proceeds                                         10.00%mric_PlacementAgentCashFeeAsPercentageOfGrossProceeds
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Warrants Not Settleable in Cash, Fair Value Disclosure (in Dollars)                                   237,299us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		237,299us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  237,299us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
Deferred Offering Costs (in Dollars)                                   $ 237,299us-gaap_DeferredOfferingCosts
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		$ 237,299us-gaap_DeferredOfferingCosts
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		  $ 237,299us-gaap_DeferredOfferingCosts
/ us-gaap_DebtInstrumentAxis
= mric_The2011UnitOfferingNoteMember 		         
The 2012 Plan [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized           3,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2012PlanMember 		                                       
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number                       2,916,650us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= mric_The2012PlanMember 		      2,916,650us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= mric_The2012PlanMember 		                   
The 2013 Plan [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized               1,054,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		1,054,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		                            1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period                       949,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		                           
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant               196,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		  196,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		  300,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		      300,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_The2013PlanMember 		                   
The Director Plan [Member]                                                    
Note 8 - Stockholders' Equity (Details) [Line Items]                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized                       570,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		      570,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		                   
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period                       0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		                           
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant               275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		  275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		                               
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                   295,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= mric_TheDirectorPlanMember 		                               
[1] All options granted during the years ended December 31, 2012 and 2013 were granted with exercise prices which were deemed to be the fair market value of the Company's stock on the date of grant, except for 200,000 options granted in December 2013 that have an exercise price of $1.75, which was deemed to be above market.