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INVESTMENTS IN AVAILABLE FOR SALE SECURITIES (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
INVESTMENTS IN AVAILABLE FOR SALE SECURITIES      
Investments Available for Sale $ 19,927,310us-gaap_AvailableForSaleSecuritiesCurrent $ 12,034,622us-gaap_AvailableForSaleSecuritiesCurrent  
Market value of securities purchased 13,100,000us-gaap_PaymentsToAcquireAvailableForSaleSecurities 12,002,203us-gaap_PaymentsToAcquireAvailableForSaleSecurities 2,012,671us-gaap_PaymentsToAcquireAvailableForSaleSecurities
Unrealized gains 7,161rmti_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments 44,070rmti_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments  
Unrealized losses 204,830rmti_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments 11,652rmti_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments  
Market value of securities sold 4,976,000us-gaap_AvailableForSaleSecurities    
Average cost basis 4,977,223us-gaap_AvailableForSaleSecuritiesAmortizedCost    
Realized gains 28,430us-gaap_AvailableForSaleSecuritiesGrossRealizedGains    
Realized losses $ 29,653us-gaap_AvailableforsaleSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments