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

Note 2 - Summary of Significant Accounting Policies (Details) - Carrying Values and Estimated Fair Values of Outstanding Notes

v2.4.1.9
Note 2 - Summary of Significant Accounting Policies (Details) - Carrying Values and Estimated Fair Values of Outstanding Notes (USD $)
Dec. 31, 2013
Related Party BSC Convertible Notes Payable [Member]  
Note 2 - Summary of Significant Accounting Policies (Details) - Carrying Values and Estimated Fair Values of Outstanding Notes [Line Items]  
Carrying Value $ 4,338,601us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= mric_RelatedPartyBSCConvertibleNotesPayableMember
Estimated Fair Value 4,000,842us-gaap_NotesPayableFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_RelatedPartyBSCConvertibleNotesPayableMember
Convertible Note Payable [Member]  
Note 2 - Summary of Significant Accounting Policies (Details) - Carrying Values and Estimated Fair Values of Outstanding Notes [Line Items]  
Carrying Value 3,852,183us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= mric_ConvertibleNotePayableMember
Estimated Fair Value 3,852,183us-gaap_NotesPayableFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_ConvertibleNotePayableMember
Junior Secured Notes Payable [Member]  
Note 2 - Summary of Significant Accounting Policies (Details) - Carrying Values and Estimated Fair Values of Outstanding Notes [Line Items]  
Carrying Value 232,405us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= mric_JuniorSecuredNotesPayableMember
Estimated Fair Value $ 2,095,610us-gaap_NotesPayableFairValueDisclosure
/ us-gaap_DebtInstrumentAxis
= mric_JuniorSecuredNotesPayableMember