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Intangible Assets - Intellectual Property (Details Narrative) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Impairment loss $ 10,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived      
Intangible assets 152,854us-gaap_FiniteLivedIntangibleAssetsNet   162,854us-gaap_FiniteLivedIntangibleAssetsNet 162,854us-gaap_FiniteLivedIntangibleAssetsNet
Other current liabilities 37,500us-gaap_OtherLiabilitiesCurrent   37,500us-gaap_OtherLiabilitiesCurrent  
Other long term liabilities 18,750us-gaap_OtherLiabilitiesNoncurrent   28,125us-gaap_OtherLiabilitiesNoncurrent  
Consulting expense associated with the Series A Warrant amounted 0rcar_ConsultingExpenseAssociatedWithSeriesWarrantAmounted 126,833rcar_ConsultingExpenseAssociatedWithSeriesWarrantAmounted 237,971rcar_ConsultingExpenseAssociatedWithSeriesWarrantAmounted 311,173rcar_ConsultingExpenseAssociatedWithSeriesWarrantAmounted
Research and development costs associated with the Series A Warrant amounted 0rcar_ResearchAndDevelopmentCostsAssociatedWithSeriesWarrantAmounted 0rcar_ResearchAndDevelopmentCostsAssociatedWithSeriesWarrantAmounted 0rcar_ResearchAndDevelopmentCostsAssociatedWithSeriesWarrantAmounted 537,215rcar_ResearchAndDevelopmentCostsAssociatedWithSeriesWarrantAmounted
Dr Gerlach [Member]        
Other current liabilities 50,000us-gaap_OtherLiabilitiesCurrent
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= rcar_DrGerlachMember
     
Other long term liabilities $ 150,000us-gaap_OtherLiabilitiesNoncurrent
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= rcar_DrGerlachMember