Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details Narrative)

v2.4.1.9
STOCKHOLDERS' EQUITY (Details Narrative) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Issuance of common stock 5,000us-gaap_StockIssuedDuringPeriodSharesNewIssues  
Stock based compensation expense $ 685,753us-gaap_ShareBasedCompensation $ 680,627us-gaap_ShareBasedCompensation
Intrinsic value stock options outstanding 4,006,633MARA_IntrinsicValueStockOptionsOutstanding  
Vested Warrants [Member]    
Stock based compensation expense 3,465us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= MARA_VestedWarrantsMember 		 
Non - Vested Warrants [Member]    
Stock based compensation expense 0us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= MARA_NonVestedWarrantsMember 		 
Vested Option [Member]    
Stock based compensation expense 683,010us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= MARA_VestedOptionMember 		 
Non - Vested Option [Member]    
Stock based compensation expense $ 3,474,770us-gaap_ShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= MARA_NonVestedOptionMember