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Note 7 - Stockholders' Equity (Details Textual) (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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Jun. 30, 2013
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Dec. 31, 2013
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 10,810,809us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | 10,343,309us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 1,902,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized | |||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 2 years 73 days | |||
| The 2013 Plan [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = mric_The2013PlanMember |
|||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |
1,055,667us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = mric_The2013PlanMember |
|||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
194,333us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = mric_The2013PlanMember |
|||
| The Director Plan [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
570,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / 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 |
|||
| Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period |
295,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod / us-gaap_PlanNameAxis = mric_TheDirectorPlanMember |
|||
| Service Provider [Member] | ||||
| Term of Warrants | 5 years |
| X | ||||||||||
|
- Definition
Term of warrants. No definition available.
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| X | ||||||||||
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
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- Definition
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of share instruments newly issued under a share-based compensation plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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