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STOCKHOLDERS' EQUITY (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2014
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| Number Warrants | |
| Cancelled | 46,154us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExpirations |
| Exercised | 214,846us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised |
| Warrants | 1,926,308us-gaap_ClassOfWarrantOrRightOutstanding |
| Warrants | |
| Number Warrants | |
| Warrants |
1,926,308us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Granted |
770,788us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Cancelled |
46,154us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExpirations / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Forfeited | |
| Exercised |
214,846us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Warrants |
1,926,308us-gaap_ClassOfWarrantOrRightOutstanding / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Awards Exercisable |
1,926,308us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Weighted Average Exercise Price | |
| Weighted average exercise price, beginning balance |
3.33MARA_WeightedAverageExercisePriceBeginningBalanceStockWarrant / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Granted |
5.26MARA_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionGrantsInPeriodWeightedAverageExercisePrice / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Cancelled | |
| Forfeited | |
| Exercised |
3.27MARA_ShareBasedCompensationArrangementsByShareBasedPaymentAwardNonOptionsExercisesInPeriodWeightedAverageExercisePrice / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Warrant Exercise Price |
4.10MARA_ExercisePriceOfWarrantsOrRightsClassOfWarrantOrRight / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
| Weighted Average Remaining Contractual Life | |
| Weighted average contractual life, beginning balance | 2 years 8 months 26 days |
| Weighted average contractual life, ending balance | 1 year 6 months 18 days |
| Grant date fair value (per share) |
1.28us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |
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- Definition
No authoritative reference available. No definition available.
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- Details
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- Definition
Weighted average price of warrants that were either forfeited or expired. No definition available.
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- Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of warrants. No definition available.
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- Definition
Weighted average price at which option holders acquired shares when converting their stock warrants into shares. No definition available.
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock warrants that were terminated. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Details
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- Definition
No authoritative reference available. No definition available.
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- Details
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- Definition
Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of non-option equity instruments exercised by participants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares under non-option equity instrument agreements for which rights to exercise lapsed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net number of non-option equity instruments granted to participants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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