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Commitments and Contingencies (Details) (USD $) | 0 Months Ended |  |
--- | --- | --- | ---
Sep. 04, 2014 item sqft | Dec. 31, 2014 | Dec. 31, 2013
Office Space Rental |  |  |
Rent liability for facilities no longer occupied |  | $ 808,418 resx_RentLiabilityForFacilitiesNoLongerOccupied | $ 1,121,495 resx_RentLiabilityForFacilitiesNoLongerOccupied
Buffalo Grove | Long-term operating lease agreement | Office space |  |  |
Office Space Rental |  |  |
Office area under lease | 2,900 us-gaap_AreaOfRealEstateProperty / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Number of extension option | 1 resx_LesseeLeasingArrangementsOperatingLeasesNumberOfExtensionOptions / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Renewal term | 3 years |  |
Number of months from lease inception that monthly rental payments are not required | 5 resx_OperatingLeasesNumberOfMonthsFromLeaseInceptionThatMonthlyRentIsNotRequiredToBePaid / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Monthly rent | 6,000 resx_OperatingLeasesMonthlyRentExpense / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Annual rent | 72,000 resx_OperatingLeasesAnnualRentExpense / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Annual increase in rent for first year | 6,100 resx_OperatingLeasesAnnualIncreaseInRentExpenseForFirstYear / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |
Annual increase in rent for second year and thereafter | $ 6,200 resx_OperatingLeasesAnnualIncreaseInRentExpenseForSecondYearAndThereafter / us-gaap_LeaseArrangementTypeAxis = resx_LongTermOperatingLeaseAgreementMember / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember / us-gaap_StatementGeographicalAxis = resx_BuffaloGroveMember |  |

X
- Definition Represents the number of extension options for renewal of the term of the lessee's leasing arrangement. + References No definition available. + Details
Name: | resx_LesseeLeasingArrangementsOperatingLeasesNumberOfExtensionOptions
Namespace Prefix: | resx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the annual increase in rental expense for first year under operating leases. + References No definition available. + Details
Name: | resx_OperatingLeasesAnnualIncreaseInRentExpenseForFirstYear
Namespace Prefix: | resx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the annual increase in rental expense for second year and thereafter under operating leases. + References No definition available. + Details
Name: | resx_OperatingLeasesAnnualIncreaseInRentExpenseForSecondYearAndThereafter
Namespace Prefix: | resx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the annual rental expense to be incurred under operating leases. + References No definition available. + Details
Name: | resx_OperatingLeasesAnnualRentExpense
Namespace Prefix: | resx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Rental expense paid per month for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References No definition available. + Details
Name: | resx_OperatingLeasesMonthlyRentExpense
Namespace Prefix: | resx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of months from lease inception that monthly rental payments are not required. + References No definition available. + Details
Name: | resx_OperatingLeasesNumberOfMonthsFromLeaseInceptionThatMonthlyRentIsNotRequiredToBePaid
Namespace Prefix: | resx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Rent liability for facilities no longer occupied + References No definition available. + Details
Name: | resx_RentLiabilityForFacilitiesNoLongerOccupied
Namespace Prefix: | resx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LesseeLeasingArrangementsOperatingLeasesRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=resx_BuffaloGroveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |