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Acquisitions (Details) (USD $)
0 Months Ended 3 Months Ended 0 Months Ended
Mar. 28, 2014
Mar. 31, 2014
Aug. 05, 2014
Mar. 31, 2015
Dec. 31, 2014
Mar. 03, 2014
Assets acquired and liabilities assumed            
Goodwill       $ 12,055,991us-gaap_Goodwill $ 12,055,991us-gaap_Goodwill  
Paloma and VasculoMedics            
Business combinations            
Purchase price 6,800,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
         
Assets acquired and liabilities assumed            
Intangible assets           6,449,628us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Prepaid and other current assets           23,642us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Property, plant and equipment           58,123us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Goodwill           3,829,858us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Accrued liabilities           (135,000)resx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Notes payable and accrued interest           (1,151,725)resx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNotesPayableAndAccruedInterest
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Deferred tax liability           (2,274,526)resx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Net assets acquired           6,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
Pro Forma Financial Information            
Net loss   (1,687,269)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
       
Basic and diluted loss per share   $ (0.19)resx_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
       
Paloma and VasculoMedics | Promissory note            
Business combinations            
Principal amount and accrued interest of assumed debt 1,151,725resx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLongTermDebtAndAccruedInterest
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
         
Repayment of outstanding balance and accrued interest     1,331,007resx_RepaymentsOfAssumedDebtAndAccruedInterest
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Early termination fees     $ 0resx_LongTermDebtPrepaymentPenalties
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaAndVasculoMedicsMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Paloma            
Business combinations            
Common stock issued (in shares) 2,500,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= resx_PalomaMember
         
VasculoMedics            
Business combinations            
Common stock issued (in shares) 220,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= resx_VasculoMedicsMember