Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

v2.4.1.9
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)
Preferred Stock [Member]
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Acc Other Income
Total
Beginning balance, value at Dec. 31, 2012    $ 352us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 10,976,325us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (7,037,134)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   $ 3,939,543us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Beginning balance, shares at Dec. 31, 2012    3,503,565us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Write-off of marketable securities/discontinued assets         6,250MARA_WriteoffOfMarketableSecuritiesdiscontinuedAssets
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
 
Stock issued, compensation expense, shares    431,672us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Stock issued, compensation expense, value    42us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,110,834us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(21)us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   1,110,855us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Restricted stock compensation expense       570,000us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     570,000us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition
Stock option compensation expense       1,122,412us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     1,122,412us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Services paid in warrants       117,796us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      117,796us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Common stock issued for cash, shares    2,317,308us-gaap_StockIssuedDuringPeriodSharesIssuedForCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Common stock issued for cash, value    230us-gaap_StockIssuedDuringPeriodValueIssuedForCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,777,481us-gaap_StockIssuedDuringPeriodValueIssuedForCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(115)us-gaap_StockIssuedDuringPeriodValueIssuedForCash
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
  5,777,596us-gaap_StockIssuedDuringPeriodValueIssuedForCash
Common stock issued in acquisition, shares    1,223,076us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Common stock issued in acquisition, value    122MARA_StockIssuedDuringPeriodValueAmountAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
2,998,439MARA_StockIssuedDuringPeriodValueAmountAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(61)MARA_StockIssuedDuringPeriodValueAmountAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   2,998,500MARA_StockIssuedDuringPeriodValueAmountAcquisitions
Common stock granted in acquisition, value             
Exercise of stock options and warrants, portion cashless, value             
Warrants issued in conjuction with Convertible Debt             
Currency translation loss         (388,357)us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
 
Adjustment resulting from Stock Dividend and other, value             
Common stock issued upon conversion of preferred stock, value             
Fundraising costs             
Series A Preferred stock, value             
Series A Preferred Stock Compensation, value             
Issuance of Series A Preferred Warrants             
Issuance of Series A Preferred Warrants - Equity Offset             
Series B Preferred Stock, value             
Marketable securities available for sale               (6,250)us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss
Beneficial conversion feature             
Net loss          (3,450,335)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   (3,450,335)us-gaap_ProfitLoss
Ending balance, value at Dec. 31, 2013    1,098us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
22,673,287us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(10,488,018)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(388,357)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
12,180,117us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Ending balance, shares at Dec. 31, 2013    10,979,186us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Write-off of marketable securities/discontinued assets          32,662MARA_WriteoffOfMarketableSecuritiesdiscontinuedAssets
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
6,250MARA_WriteoffOfMarketableSecuritiesdiscontinuedAssets
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
38,912MARA_WriteoffOfMarketableSecuritiesdiscontinuedAssets
Stock issued, compensation expense, shares              
Stock issued, compensation expense, value       2,203,222us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      2,203,222us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Services paid in warrants       41,576us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      41,576us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Common stock issued in acquisition, shares    185,000us-gaap_StockIssuedDuringPeriodSharesAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Common stock issued in acquisition, value    19MARA_StockIssuedDuringPeriodValueAmountAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
2,078,781MARA_StockIssuedDuringPeriodValueAmountAcquisitions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      2,078,800MARA_StockIssuedDuringPeriodValueAmountAcquisitions
Common stock granted in acquisition, shares              
Common stock granted in acquisition, value       817,800MARA_CommonStockGrantedInAcquisitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      817,800MARA_CommonStockGrantedInAcquisitionValue
Exercise of stock options and warrants, portion cashless, shares    107,814us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Exercise of stock options and warrants, portion cashless, value    11us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
249,213us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      249,224us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Warrants issued in conjuction with Convertible Debt       164,020MARA_AdjustmentsToAdditionalPaidInCapitalWarrantIssuedConvertibleDebt
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      164,020MARA_AdjustmentsToAdditionalPaidInCapitalWarrantIssuedConvertibleDebt
Currency translation loss             (388,357)us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
(388,357)us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments
Adjustment resulting from Stock Dividend and other, shares 466,000us-gaap_CommonStockDividendsShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
1,495,881us-gaap_CommonStockDividendsShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Adjustment resulting from Stock Dividend and other, value 47us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
198us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(6)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(186)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   4us-gaap_DividendsCommonStock
Common stock issued upon conversion of preferred stock, shares (1,023,579)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
1,023,579us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
       
Common stock issued upon conversion of preferred stock, value (102)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
102us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
           
Fundraising costs       (265,000)MARA_FundraisingCostsPaidInCapital
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      (265,000)MARA_FundraisingCostsPaidInCapital
Series A Preferred Stock, shares 100,502MARA_SeriesPreferredStockShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
          
Series A Preferred stock, value 100MARA_SeriesPreferredStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   6,238,164MARA_SeriesPreferredStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      6,238,264MARA_SeriesPreferredStockValue
Series A Preferred Stock Compensation, shares 23,077MARA_SeriesPreferredStockCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
          
Series A Preferred Stock Compensation, value 2MARA_SeriesPreferredStockCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   149,998MARA_SeriesPreferredStockCompensationValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      150,000MARA_SeriesPreferredStockCompensationValue
Issuance of Series A Preferred Warrants       (9,115)MARA_IssuanceOfSeriesPreferredWarrants
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      (9,115)MARA_IssuanceOfSeriesPreferredWarrants
Issuance of Series A Preferred Warrants - Equity Offset       9,115MARA_IssuanceOfSeriesPreferredWarrantsEquityOffset
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      9,115MARA_IssuanceOfSeriesPreferredWarrantsEquityOffset
Series B Preferred Stock, shares 466,000MARA_SeriesBPreferredStockShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
          
Series B Preferred Stock, value 45MARA_SeriesBPreferredStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   3,178,914MARA_SeriesBPreferredStockValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
      3,178,960MARA_SeriesBPreferredStockValue
Beneficial conversion feature       1,271,492us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(1,271,492)us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
     
Net loss       (1,271,492)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(611,628)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
   (1,883,120)us-gaap_ProfitLoss
Ending balance, value at Dec. 31, 2014 $ 93us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
$ 1,379us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 36,977,169us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (12,337,665)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ (388,357)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ComprehensiveIncomeMember
$ 24,252,619us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Ending balance, shares at Dec. 31, 2014 932,000us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
13,791,460us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember