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Stockholder's Equity (Details) (USD $)
0 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended
Jul. 10, 2014
Jun. 13, 2014
May 21, 2014
May 06, 2014
Apr. 29, 2014
Dec. 31, 2014
Dec. 02, 2014
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Dec. 31, 2014
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Nov. 30, 2013
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Oct. 21, 2014
Dec. 31, 2013
Jun. 30, 2013
Preferred stock shares authorized           5,000,000us-gaap_PreferredStockSharesAuthorized   5,000,000us-gaap_PreferredStockSharesAuthorized        
Preferred stock par value           $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare   0.001us-gaap_PreferredStockParOrStatedValuePerShare        
Shares issued           12,801,183resx_StockIssuedDuringPeriodSharesPeriodIncrease            
Shares issued to creditors pursuant to conversion of outstanding debt           274,764resx_StockIssuedDuringPeriodSharesIssuedToCreditorsInConnectionWithConversionOfOutstandingDebt            
Shares issued to creditors in settlement of debt           160,056resx_StockIssuedDuringPeriodSharesIssuedToCreditorsInConnectionWithSettlementOfDebt            
Number of shares issued for settlement of obligation transfer agreement           150,000resx_NumberOfSharesIssuedForSettlementOfObligationTransferAgreement            
Number of notes payable converted to common stock           $ 3resx_DebtInstrumentNumberConvertedIntoSharesOfCommonStock            
Number of shares issued 50,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 1,778,750us-gaap_StockIssuedDuringPeriodSharesNewIssues 872,310us-gaap_StockIssuedDuringPeriodSharesNewIssues 3,418,125us-gaap_StockIssuedDuringPeriodSharesNewIssues 2,776,500us-gaap_StockIssuedDuringPeriodSharesNewIssues 8,895,685us-gaap_StockIssuedDuringPeriodSharesNewIssues            
Shares surrendered by ASC           (99,332)resx_CommonStockSharesSurrenderedPursuantToAmendmentOfSettlementAgreementAndStipulation            
Number of shares of common stock to be purchased by various institutional and individual accredited investors           4,823,766us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights   4,823,766us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights        
Strike price (in dollars per share)           $ 3.30us-gaap_SharePrice   3.30us-gaap_SharePrice       $ 3.00us-gaap_SharePrice
Proceeds from private placement 35,600,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement                      
Net proceeds from private placement after payment fees 31,900,000resx_NetProceedsFromIssuanceOfPrivatePlacement                      
Placement agent fees paid 3,600,000resx_PaymentsOfPlacementAgentFeesInPrivatePlacement                      
Estimated offering expenses paid 100,000resx_PaymentsOfEstimatedOfferingExpensesInPrivatePlacement                      
Number of shares of common stock for which registration statement is filed for offering and resale of common stock 11,633,885resx_NumberOfSharesOfCommonStockForWhichRegistrationStatementIsFiledForOfferingAndResaleOfCommonStock                      
Loss on settlement of note payable           400,016resx_GainLossOnSettlementOfNotesPayable            
Loss on related party note payable settlement           1,907,772resx_GainsLossesOnExtinguishmentOfRelatedPartyDebt            
Shares issued to law firm pursuant to conversion of outstanding debt           53,457resx_StockIssuedDuringPeriodSharesIssuedToLawFirmInConnectionWithConversionOfOutstandingDebt            
Note payable to a high yield fund                        
Number of shares issued in debt conversion     259,236us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= resx_NotePayableToAHighYieldFundMember
  259,236us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= resx_NotePayableToAHighYieldFundMember
             
Principal amount of promissory note converted     500,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= resx_NotePayableToAHighYieldFundMember
                 
Notes payable to 11 investors                        
Principal amount of promissory note converted             50,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToElevenInvestorsMember
  225,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToElevenInvestorsMember
     
Number of investors converting debt             2resx_DebtInstrumentNumberOfInvestorsConvertingDebt
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToElevenInvestorsMember
2resx_DebtInstrumentNumberOfInvestorsConvertingDebt
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToElevenInvestorsMember
9resx_DebtInstrumentNumberOfInvestorsConvertingDebt
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToElevenInvestorsMember
     
Notes payable dated July 9, 2012 issued to Investor One                        
Number of shares issued in debt conversion             7,764us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToInvestor1Member
         
Notes payable dated July 9, 2012 issued to Investor Two                        
Number of shares issued in debt conversion             7,764us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= resx_NotesPayableToInvestor2Member
         
Investors | Warrants to purchase common stock                        
Term of warrants 4 years 4 years 4 years 4 years 4 years 4 years            
Number of shares of common stock to be purchased by various institutional and individual accredited investors 15,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
533,625us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
261,693us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
1,025,438us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
832,950us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
2,668,706us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
  2,668,706us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
       
Number of shares of common stock consisted in unit 1resx_NumberOfSharesOfCommonStockConsistedInUnit
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
1resx_NumberOfSharesOfCommonStockConsistedInUnit
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= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
1resx_NumberOfSharesOfCommonStockConsistedInUnit
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
1resx_NumberOfSharesOfCommonStockConsistedInUnit
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= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
1resx_NumberOfSharesOfCommonStockConsistedInUnit
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
             
Number of warrants consisted in unit 0.3us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
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= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
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0.3us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
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= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
0.3us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
0.3us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
0.3us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
             
Strike price (in dollars per share) $ 4.00us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
4.00us-gaap_SharePrice
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4.00us-gaap_SharePrice
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4.00us-gaap_SharePrice
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
4.00us-gaap_SharePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
             
Exercise price of warrants issued to various institutional and individual accredited investors $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
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$ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
  4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= us-gaap_InvestorMember
       
Placement agent | Warrants to purchase common stock                        
Term of warrants           4 years            
Number of shares of common stock to be purchased by various institutional and individual accredited investors 5,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
177,875us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
89,731us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
341,813us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
277,650us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
892,069us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
  892,069us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_PlacementAgentMember
       
Exercise price of warrants issued to various institutional and individual accredited investors           $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
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  4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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A law firm | Warrants to purchase common stock                        
Term of warrants           4 years            
Number of shares of common stock to be purchased by various institutional and individual accredited investors   16,037us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
      16,037us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
  16,037us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
       
Exercise price of warrants issued to various institutional and individual accredited investors           $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
  4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
       
Shares issued to law firm pursuant to conversion of outstanding debt   53,457resx_StockIssuedDuringPeriodSharesIssuedToLawFirmInConnectionWithConversionOfOutstandingDebt
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_CounterpartyNameAxis
= resx_LawFirmWithOutstandingDebtDueToMember
                   
Chairman of the Board                        
Shares issued to chairman in settlement of outstanding debt           546,553resx_StockIssuedDuringPeriodSharesIssuedToChairmanInConnectionWithSettlementOfOutstandingDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
           
Chairman of the Board | Warrants to purchase common stock                        
Number of shares of common stock to be purchased by various institutional and individual accredited investors         351,060us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
             
Exercise price of warrants issued to various institutional and individual accredited investors         2.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
             
Chairman of the Board | Financing transaction                        
Shares issued to chairman in settlement of outstanding debt           546,553resx_StockIssuedDuringPeriodSharesIssuedToChairmanInConnectionWithSettlementOfOutstandingDebt
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
           
Chairman of the Board | Financing transaction | Warrants to purchase common stock                        
Term of warrants           4 years            
Number of shares of common stock to be purchased by various institutional and individual accredited investors           351,060us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
  351,060us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
       
Exercise price of warrants issued to various institutional and individual accredited investors           $ 2.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionAxis
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= us-gaap_BoardOfDirectorsChairmanMember
  2.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
       
Director | Financing transaction | Warrants to purchase common stock                        
Term of warrants           4 years            
Number of shares of common stock to be purchased by various institutional and individual accredited investors           75,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionAxis
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  75,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
       
Exercise price of warrants issued to various institutional and individual accredited investors           $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= resx_CommonStockWarrantsMember
/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
  4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
       
Promissory note | Financing transaction                        
Principal amount of promissory note converted           200,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
           
Promissory note | Chairman of the Board                        
Shares issued to chairman in settlement of outstanding debt         546,553resx_StockIssuedDuringPeriodSharesIssuedToChairmanInConnectionWithSettlementOfOutstandingDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
             
Promissory note | Chairman of the Board | Financing transaction                        
Principal amount of promissory note converted         1,050,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
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1,050,000us-gaap_DebtConversionOriginalDebtAmount1
/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
           
Number of convertible promissory notes converted         4resx_NumberOfConvertiblePromissoryNotesConverted
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
4resx_NumberOfConvertiblePromissoryNotesConverted
/ us-gaap_RelatedPartyTransactionAxis
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/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
           
Loss on related party note payable settlement         1,670,579resx_GainsLossesOnExtinguishmentOfRelatedPartyDebt
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
             
Promissory note | Director | Financing transaction                        
Number of shares issued in debt conversion           100,000us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_ShortTermDebtTypeAxis
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      100,000us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_RelatedPartyTransactionAxis
= resx_FinancingTransactionMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
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Number of shares of common stock to be purchased by various institutional and individual accredited investors                   75,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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Exercise price of warrants issued to various institutional and individual accredited investors                   $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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Principal amount of promissory note converted                   200,000us-gaap_DebtConversionOriginalDebtAmount1
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200,000us-gaap_DebtConversionOriginalDebtAmount1
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Loss on related party note payable settlement           $ (257,394)resx_GainsLossesOnExtinguishmentOfRelatedPartyDebt
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      $ 257,394resx_GainsLossesOnExtinguishmentOfRelatedPartyDebt
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Tranche Three Member | Common Stock Warrants Issued 29 April 2014 Member                        
Number of shares of common stock to be purchased by various institutional and individual accredited investors           35,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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  35,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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Exercise price of warrants issued to various institutional and individual accredited investors           $ 4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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Tranche Three Member | Placement agent | Common Stock Warrants Issued 29 April 2014 Member                        
Number of shares of common stock to be purchased by various institutional and individual accredited investors         35,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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Exercise price of warrants issued to various institutional and individual accredited investors         4.80us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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Paloma and VasculoMedics                        
Common stock issued for acquisition (in shares)           2,720,000us-gaap_StockIssuedDuringPeriodSharesAcquisitions
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