XML 52 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9
Mortgage Notes Payable (Details) (USD $)
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Nov. 30, 2014
May 31, 2014
Aug. 31, 2014
Debt Instrument [Line Items]            
Mortgage notes payable $ 123,899,298us-gaap_NotesPayable $ 123,899,298us-gaap_NotesPayable $ 89,551,724us-gaap_NotesPayable      
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 123,899,298us-gaap_NotesPayable 123,899,298us-gaap_NotesPayable 89,551,724us-gaap_NotesPayable      
Havana/Parker Complex [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 2,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
2,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
3,098,780us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
     
Maturity date Jul. 01, 2016          
Fixed interest rate on mortgage (in hundredths) 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
[1] 6.51%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 2,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
2,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
3,098,780us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
     
Debt Instrument, Maturity Date Jul. 01, 2016          
Havana/Parker Complex [Member] | Modification Agreement [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 2,500,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
2,500,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
  3,037,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
   
Maturity date   Jul. 01, 2016        
Fixed interest rate on mortgage (in hundredths) 2.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
2.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
       
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 2,500,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
2,500,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
  3,037,000us-gaap_NotesPayable
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
   
Debt Instrument Decrease Forgiveness   537,000us-gaap_DebtInstrumentDecreaseForgiveness
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
       
Debt Instrument Periodic Payment Principal   100,000us-gaap_DebtInstrumentPeriodicPaymentPrincipal
/ us-gaap_DebtInstrumentAxis
= netr_ModificationAgreementMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_HavanaParkerMember
       
Debt Instrument, Maturity Date   Jul. 01, 2016        
Garden Gateway Plaza [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 6,963,381us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
6,963,381us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
7,119,544us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
     
Maturity date Apr. 05, 2020          
Fixed interest rate on mortgage (in hundredths) 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
[1] 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 6,963,381us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
6,963,381us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
7,119,544us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GardenGatewayPlazaMember
     
Debt Instrument, Maturity Date Apr. 05, 2020          
Waterman Plaza [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 3,368,146us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
3,368,146us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
3,457,973us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
     
Maturity date Sep. 01, 2015          
Fixed interest rate on mortgage (in hundredths) 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
[1] 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 3,368,146us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
3,368,146us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
3,457,973us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_WatermanPlazaMember
     
Debt Instrument, Maturity Date Sep. 01, 2015          
Sparky's Thousand Palms Self-Storage [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 4,092,100us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
4,092,100us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
4,215,349us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
     
Maturity date Mar. 01, 2034          
Interest rate, Current 5.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
[1],[2] 5.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
[1],[2]        
Interest rate, minimum (in hundredths) 5.50%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
[3]          
Interest rate, maximum (in hundredths) 10.50%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
[3]          
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 4,092,100us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
4,092,100us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
4,215,349us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThousandPalmsSelfStorageMember
     
Debt Instrument, Maturity Date Mar. 01, 2034          
Sparky's Hesperia East Self-Storage [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 830,883us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
830,883us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
890,774us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
     
Maturity date Dec. 18, 2022          
Interest rate, Current 4.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
[1],[2] 4.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
[1],[2]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 830,883us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
830,883us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
890,774us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysHesperiaEastSelfStorageMember
     
Debt Instrument, Maturity Date Dec. 18, 2022          
Sparky's Rialto Self-Storage [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 2,119,037us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
2,119,037us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
2,166,791us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
     
Periodic payment 11,982us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
[4]          
Maturity date May 03, 2018          
Fixed interest rate on mortgage (in hundredths) 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
[1],[4] 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
[1],[4]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 2,119,037us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
2,119,037us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
2,166,791us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysRialtoSelfStorageMember
     
Debt Instrument, Maturity Date May 03, 2018          
Genesis Plaza [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 4,491,588us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
4,491,588us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
4,618,147us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
     
Maturity date Sep. 01, 2015          
Fixed interest rate on mortgage (in hundredths) 4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
[1] 4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 4,491,588us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
4,491,588us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
4,618,147us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_GenesisPlazaMember
     
Debt Instrument, Maturity Date Sep. 01, 2015          
Executive Office Park [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 4,379,854us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
4,379,854us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
4,447,699us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
     
Maturity date Jul. 01, 2025          
Fixed interest rate on mortgage (in hundredths) 5.80%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
[1],[5] 5.80%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
[1],[5]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 4,379,854us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
4,379,854us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
4,447,699us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ExecutiveOfficeParkMember
     
Debt Instrument, Maturity Date Jul. 01, 2025          
Dakota Bank Buildings [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 10,993,386us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
10,993,386us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
5,417,950us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
     
Maturity date Jul. 06, 2024          
Fixed interest rate on mortgage (in hundredths) 4.74%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
[1] 4.74%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 10,993,386us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
10,993,386us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
5,417,950us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_DakotaBankBuildingsMember
     
Debt Instrument, Maturity Date Jul. 06, 2024          
Yucca Valley Retail Center [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 2,982,411us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
2,982,411us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
3,095,974us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
     
Maturity date Apr. 11, 2015          
Fixed interest rate on mortgage (in hundredths) 5.62%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
[1] 5.62%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 2,982,411us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
2,982,411us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
3,095,974us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_YuccaValleyRetailCenterMember
     
Debt Instrument, Maturity Date Apr. 11, 2015          
Rangewood Medical Office Building [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 1,092,778us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
1,092,778us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
1,155,305us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
     
Maturity date Jan. 01, 2019          
Fixed interest rate on mortgage (in hundredths) 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
[1] 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 1,092,778us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
1,092,778us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
1,155,305us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RangewoodMedicalOfficeBuildingMember
     
Debt Instrument, Maturity Date Jan. 01, 2019          
Regatta Square [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 1,214,799us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
1,214,799us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
1,244,615us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
     
Maturity date Jan. 01, 2019          
Fixed interest rate on mortgage (in hundredths) 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
[1] 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 1,214,799us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
1,214,799us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
1,244,615us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_RegattaSquareMember
     
Debt Instrument, Maturity Date Jan. 01, 2019          
Port of San Diego Complex [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 10,368,228us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
10,368,228us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
10,608,385us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
     
Maturity date Mar. 05, 2020          
Fixed interest rate on mortgage (in hundredths) 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
[1] 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 10,368,228us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
10,368,228us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
10,608,385us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PortOfSanDiegoComplexMember
     
Debt Instrument, Maturity Date Mar. 05, 2020          
Morena Office Center [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 2,351,805us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
2,351,805us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
2,411,282us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
     
Maturity date Jan. 01, 2021          
Fixed interest rate on mortgage (in hundredths) 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
[1],[6] 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
[1],[6]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 2,351,805us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
2,351,805us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
2,411,282us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_MorenaOfficeCenterMember
     
Debt Instrument, Maturity Date Jan. 01, 2021          
Pacific Oaks Plaza [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 1,599,204us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
1,599,204us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
1,639,658us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
     
Maturity date Jun. 01, 2021          
Fixed interest rate on mortgage (in hundredths) 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
[1],[6] 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
[1],[6]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 1,599,204us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
1,599,204us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
1,639,658us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PacificOaksPlazaMember
     
Debt Instrument, Maturity Date Jun. 01, 2021          
Shoreline Medical Building [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 3,846,697us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
3,846,697us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
3,959,914us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
     
Maturity date Jun. 01, 2022          
Fixed interest rate on mortgage (in hundredths) 5.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
[1],[6] 5.10%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
[1],[6]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 3,846,697us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
3,846,697us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
3,959,914us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ShorelineMedicalBuildingMember
     
Debt Instrument, Maturity Date Jun. 01, 2022          
Sparky's Three Properties [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 7,986,522us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
7,986,522us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
8,116,028us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
     
Maturity date Dec. 06, 2022          
Fixed interest rate on mortgage (in hundredths) 4.70%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
[1] 4.70%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 7,986,522us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
7,986,522us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
8,116,028us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysThreePropertiesMember
     
Debt Instrument, Maturity Date Dec. 06, 2022          
The Presidio [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 6,000,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
6,000,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
5,492,375us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
     
Maturity date Dec. 01, 2024          
Fixed interest rate on mortgage (in hundredths) 4.54%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
[1] 4.54%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 6,000,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
6,000,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
5,492,375us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_PresidioMember
     
Debt Instrument, Maturity Date Dec. 01, 2024          
Sparkys Lancaster Self Storage [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 1,903,982us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
1,903,982us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
1,965,504us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
     
Maturity date Jun. 01, 2020          
Fixed interest rate on mortgage (in hundredths) 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
[1] 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 1,903,982us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
1,903,982us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
1,965,504us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_SparkysLancasterSelfStorageMember
     
Debt Instrument, Maturity Date Jun. 01, 2020          
Fontana Medical Plaza [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
1,990,880us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
     
Maturity date Aug. 28, 2019          
Fixed interest rate on mortgage (in hundredths) 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
[1] 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
1,990,880us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_FontanaMedicalPlazaMember
     
Debt Instrument, Maturity Date Aug. 28, 2019          
Bismarck Office [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 3,321,198us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
3,321,198us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
  3,400,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
 
Maturity date Oct. 01, 2016          
Fixed interest rate on mortgage (in hundredths) 6.12%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
[1] 6.12%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 3,321,198us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
3,321,198us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
  3,400,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_BismarckOfficeMember
 
Debt Instrument, Maturity Date Oct. 01, 2016          
Union Terrace [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
    6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
Maturity date Sep. 05, 2024          
Fixed interest rate on mortgage (in hundredths) 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
[1] 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
    6,600,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTerraceMember
Debt Instrument, Maturity Date Sep. 05, 2024          
Centennial Tech Center [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 10,250,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
10,250,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
     
Maturity date Dec. 05, 2024          
Fixed interest rate on mortgage (in hundredths) 4.34%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
[1] 4.34%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 10,250,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
10,250,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_CentennialTechCenterMember
     
Debt Instrument, Maturity Date Dec. 05, 2024          
Arapahoe Service Center [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 8,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
8,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
     
Maturity date Jan. 05, 2025          
Fixed interest rate on mortgage (in hundredths) 4.34%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
[1] 4.34%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 8,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
8,500,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ArapahoeServiceCenterMember
     
Debt Instrument, Maturity Date Jan. 05, 2025          
Union Town Center [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 8,440,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
8,440,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
     
Maturity date Jan. 05, 2025          
Fixed interest rate on mortgage (in hundredths) 4.28%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
[1] 4.28%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
[1]        
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 8,440,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
8,440,000us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
0us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_UnionTownCenterMember
     
Debt Instrument, Maturity Date Jan. 05, 2025          
NetREIT Inc Properties [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 116,195,999us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
116,195,999us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
77,112,927us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
     
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable 116,195,999us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
116,195,999us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
77,112,927us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_NetreitIncPropertiesMember
     
Model Home Properties [Member]            
Debt Instrument [Line Items]            
Mortgage notes payable 7,703,299us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
7,703,299us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
12,438,797us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
     
Fixed interest rate on mortgage range, minimum (in hundredths) 4.90%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
[7]          
Fixed interest rate on mortgage range, maximum (in hundredths) 5.80%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
[7]          
Mortgage Notes Narrative [Abstract]            
Mortgage notes payable $ 7,703,299us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
$ 7,703,299us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
$ 12,438,797us-gaap_NotesPayable
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= netr_ModelHomePropertiesMember
     
Model Home Properties [Member] | Minimum [Member]            
Debt Instrument [Line Items]            
Maturity date Jan. 01, 2015          
Mortgage Notes Narrative [Abstract]            
Debt Instrument, Maturity Date Jan. 01, 2015          
Model Home Properties [Member] | Maximum [Member]            
Debt Instrument [Line Items]            
Maturity date Jan. 01, 2019          
Mortgage Notes Narrative [Abstract]            
Debt Instrument, Maturity Date Jan. 01, 2019          
[1]
Interest rates as of December 31, 2014
[2]
Interest at a variable rate indexed to the 5 year interest rate swap .
[3]
Interest at variable rate ranging from 5.50%-10.50%.
[4]
Interest subject to reset; thereafter, monthly payments of $11,982, including interest at rate indexed to 5-year Treasury Rate + 3%
[5]
Interest rate is subject to reset on July 1, 2018.
[6]
Interest rate subject to resetting on the 3rd and 6th loan anniversary.
[7]
Each Model Home has a standalone mortgage note at interest rates ranging from 4.9% to 5.8% (at December 31, 2014).