Organization (Details)	1 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017 ft² Property Counterparty_Investment
Real Estate Properties [Line Items]
Number of limited partnerships in which the company is sole General Partner | Counterparty_Investment		2
Number of partnerships that purchase and lease back model homes from developers in which the company is the general and limited partner | Counterparty_Investment		4
Key Provisions of Operating or Partnership Agreement, Description		The Company operates in the following partnerships during the periods covered by these condensed consolidated financial statements: The Company is the sole General Partner in two limited partnerships (NetREIT Palm Self-Storage LP and NetREIT Casa Grande LP), all with ownership in real estate income producing properties. The Company refers to these entities collectively, as the “NetREIT Partnerships”. In June 2016, the Company purchased the 5.99% outside interest in NetREIT Garden Gateway LP. The Company is the general and limited partner in four partnerships that purchase and lease back Model Homes from developers (“Dubose Model Home Investors #201, LP”, “Dubose Model Homes Investors #202, LP”, “Dubose Model Homes Investors #203, LP” and “NetREIT Dubose Model Home REIT, LP”). The Company refers to these entities collectively, as the “Model Home Partnerships”. The Company has determined that the entities described above, where it owns less than 100%, should be included in the Company’s consolidated financial statements as the Company directs their activities and has control of these limited partnerships.
NetREIT Garden Gateway LP [Member]
Real Estate Properties [Line Items]
Percentage of outside interest purchased by company	5.99%
Office, Industrial Properties And Medical Building [Member]
Real Estate Properties [Line Items]
Number of properties		17
Area of Real Estate Property | ft²		1,464,000
Retail Properties [Member]
Real Estate Properties [Line Items]
Number of properties		4
Retail Sites and Mixed Use Properties [Member]
Real Estate Properties [Line Items]
Area of Real Estate Property | ft²		228,000
Mixed Use Property [Member]
Real Estate Properties [Line Items]
Number of properties		1
Residential Properties [Member]
Real Estate Properties [Line Items]
Number of properties		139
Number of limited partnerships in which the company is sole General Partner | Counterparty_Investment		4