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Note 7 - Stockholders' Equity - Common Stock Warrants (Details) (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Dec. 31, 2014
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| Outstanding at December 31, 2014 (in shares) | 20,768,692us-gaap_ClassOfWarrantOrRightOutstanding | 20,759,136us-gaap_ClassOfWarrantOrRightOutstanding |
| Outstanding at December 31, 2014 (in dollars per share) | $ 0.90us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 | $ 0.91us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |
| Issued (in shares) | 35,000mric_WarrantsIssuedDuringPeriod | |
| Issued (in dollars per share) | $ 1mric_WarrantsIssuedDuringPeriodWeightedAverageExercisePrice | |
| Terminated (in shares) | (25,444)mric_WarrantsTerminated | |
| Terminated (in dollars per share) | $ 8mric_WarrantsTerminatedWeightedAverageExercisePrice |
| X | ||||||||||
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- Definition
Number of warrants issued during the reporting period. No definition available.
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| X | ||||||||||
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- Definition
Weighted average exercise price of warrants issued during the reporting period. No definition available.
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| X | ||||||||||
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- Definition
Number of warrants terminated during the reporting period. No definition available.
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| X | ||||||||||
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- Definition
Weighted average exercise price of the warrants terminated during the period. No definition available.
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| X | ||||||||||
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- Definition
Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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