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Real Estate Assets (Summary of Properties Owned) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Apr. 10, 2015	Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]
Real estate assets, net	$ 200,615.6netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale		$ 169,090,028netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale
Real Estate Held-for-sale	28,929,279us-gaap_RealEstateHeldforsale	28,929,279us-gaap_RealEstateHeldforsale	29,107,675us-gaap_RealEstateHeldforsale
Havana Parker [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Jun. 01, 2006
Location	Aurora, Colorado
Real estate assets, net	2,204,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_HavanaParkerMember
Garden Gateway Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Mar. 01, 2007
Location	Colorado Springs, Colorado
Real estate assets, net	12,090,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GardenGatewayPlazaMember
World Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Sep. 01, 2007
Location	San Bernardino, California
Real estate assets, net	6,775,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WorldPlazaMember
Regatta Square [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Oct. 01, 2007
Location	Denver, Colorado
Real estate assets, net	1,888,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RegattaSquareMember
Sparkys Palm Self Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Nov. 01, 2007
Location	Highland, California
Real estate assets, net	4,238,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysPalmSelfStorageMember
Sparky's Joshua Self-Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2007
Location	Hesperia, California
Real estate assets, net	6,618,300netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysJoshuaSelfStorageMember
Executive Office Park [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Jul. 01, 2008
Location	Colorado Springs, Colorado
Real estate assets, net	8,282,300netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ExecutiveOfficeParkMember
Waterman Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Aug. 01, 2008
Location	San Bernardino, California
Real estate assets, net	5,961,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_WatermanPlazaMember
Pacific Oaks Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Sep. 01, 2008
Location	Escondido, California
Real estate assets, net	4,273,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PacificOaksPlazaMember
Morena Office Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Jan. 01, 2009
Location	San Diego, California
Real estate assets, net	5,414,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_MorenaOfficeCenterMember
Rangewood Medical Office Building [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Mar. 01, 2009
Location	Colorado Springs, Colorado
Real estate assets, net	2,359,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_RangewoodMedicalOfficeBuildingMember
Sparky's Thousand Palms Self-Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Aug. 01, 2009
Location	Thousand Palms, California
Real estate assets, net	5,335,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysThousandPalmsSelfStorageMember
Sparky's Hesperia East Self-Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2009
Location	Hesperia, California
Real estate assets, net	2,367,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysHesperiaEastSelfStorageMember
Sparky's Rialto Self-Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	May 01, 2010
Location	Rialto, California
Real estate assets, net	4,655,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysRialtoSelfStorageMember
Genesis Plaza [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Aug. 01, 2010
Location	San Diego, California
Real estate assets, net	8,512,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_GenesisPlazaMember
Dakota Bank Buildings [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	May 01, 2011
Location	Fargo, North Dakota
Real estate assets, net	10,369,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_DakotaBankBuildingsMember
Yucca Valley Retail Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Sep. 01, 2011
Location	Yucca Valley, California
Real estate assets, net	7,846,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_YuccaValleyRetailCenterMember
Sparky's Sunrise Self-Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2011
Location	Hesperia, California
Real estate assets, net	2,134,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysSunriseSelfStorageMember
Port of San Diego Complex [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2011
Location	San Diego, California
Real estate assets, net	13,979,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PortOfSanDiegoComplexMember
Shoreline Medical Building [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	May 01, 2012
Location	Half Moon Bay, California
Real estate assets, net	5,959,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ShorelineMedicalBuildingMember
The Presidio [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Nov. 01, 2012
Location	Aurora, Colorado
Real estate assets, net	6,636,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_PresidioMember
Sparky's Lancaster Self Storage [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	May 01, 2013
Location	Lancaster, CA
Real estate assets, net	3,579,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_SparkysLancasterSelfStorage1Member
Bismarck Office [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Mar. 01, 2014
Location	Fargo, ND
Real estate assets, net	4,855,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_BismarckOfficeMember
Union Terrace [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Aug. 01, 2014
Location	Lakewood, CO
Real estate assets, net	8,815,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTerraceMember
Centennial Tech Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2014
Location	Colorado Springs, Colorado
Real estate assets, net	15,671,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_CentennialTechCenterMember
Arapahoe Service Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2014
Location	Centennial, CO
Real estate assets, net	11,733,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ArapahoeServiceCenterMember
Union Town Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Dec. 01, 2014
Real estate assets, net	11,297,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_UnionTownCenterMember
NetREIT, Inc. Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real estate assets, net	183,843,600netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_NetreitIncPropertiesMember
Model Home Properties [Member]
Real Estate And Accumulated Depreciation [Line Items]
Real estate assets, net	$ 16,772,000netr_RealEstateInvestmentPropertyNetAndRealEstateHeldForSale / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = netr_ModelHomePropertiesMember
Model Home Properties [Member] | Minimum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Jan. 01, 2009
Model Home Properties [Member] | Maximum [Member]
Real Estate And Accumulated Depreciation [Line Items]
Date acquired	Jan. 01, 2015

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

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