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Equipment, Net (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Property, Plant and Equipment [Line Items] | ||
| Total fixed assets | $ 687,170us-gaap_PropertyPlantAndEquipmentGross | $ 645,921us-gaap_PropertyPlantAndEquipmentGross |
| Less: Accumulated depreciation and amortization | (609,074)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | (580,749)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
| Net carrying amount | 78,096us-gaap_PropertyPlantAndEquipmentNet | 65,172us-gaap_PropertyPlantAndEquipmentNet |
| Depreciation and amortization expense | 28,325us-gaap_Depreciation | 37,133us-gaap_Depreciation |
| Furniture and Fixtures [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Total fixed assets |
70,320us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember |
59,133us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember |
| Office Equipment [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Total fixed assets |
57,893us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_OfficeEquipmentMember |
41,752us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_OfficeEquipmentMember |
| Lab and computer equipment [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Total fixed assets |
425,195us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = rnn_LabAndComputerEquipmentMember |
425,195us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = rnn_LabAndComputerEquipmentMember |
| Leasehold Improvements [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Total fixed assets |
$ 133,762us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |
$ 119,841us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |
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- Definition
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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