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Common Stock Options (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Weighted average exercise price    
Options exercisable $ 0.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue  
Warrant    
Options Outstanding    
Options outstanding - beginning balance   80,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options granted   105,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options oustanding - ending balance   185,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Warrants exercisable   85,000rcar_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisable
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Weighted average exercise price    
Options outstanding - beginning balance   $ 0.70us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options granted   $ 0.93us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options outstanding - ending balance   $ 0.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options exercisable   $ 0.72us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Weighted average remaining contracted term    
Warrants outstanding - beginning baiance   8 years 9 months
Options granted   9 years 4 months 28 days
Warrants outstanding - ending balance   9 years 1 month 13 days
Warrants exercisable   8 years 11 months 19 days
Aggregate intrinsic value    
Options outstanding - beginning balance   $ 24,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options granted   $ 1,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodIntrinsicValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options outstanding - ending balance   $ 9,300us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember
Options exercisable   $ 7,850us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_WarrantMember