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LONG-TERM DEBT (Details) (Convertible Promissory Notes, Convertible Notes Payable, USD $)
3 Months Ended
Mar. 31, 2015
Mar. 13, 2015
Dec. 31, 2014
Debt Instrument [Line Items]      
Annual interest rate (as a percent) 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage    
Notice period (in days) 15 days    
Conversion price per share $ 5.50us-gaap_DebtInstrumentConvertibleConversionPrice1    
Ashford Capital Partners, L.P.
     
Debt Instrument [Line Items]      
Original Principal Amount $ 300,000.0us-gaap_DebtInstrumentFaceAmount
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/ dei_LegalEntityAxis
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/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
$ 300,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mark_ConvertiblePromissoryNotesMember
/ dei_LegalEntityAxis
= mark_AshfordCapitalPartnersL.P.Member
/ us-gaap_LongtermDebtTypeAxis
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$ 3,000,000.0us-gaap_DebtInstrumentFaceAmount
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/ dei_LegalEntityAxis
= mark_AshfordCapitalPartnersL.P.Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
Investor
     
Debt Instrument [Line Items]      
Original Principal Amount     $ 100,000.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mark_ConvertiblePromissoryNotesMember
/ dei_LegalEntityAxis
= mark_NonRelatedPartyInvestorMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember