Organization (Details)	9 Months Ended
	Sep. 30, 2018 USD ($) 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 homebuilders 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 is the general and limited partner in four limited partnerships that purchase Model Homes and lease them back to homebuilders (“Dubose Model Home Investors #202, LP”, “Dubose Model Homes Investors #203, LP”, “Dubose Model Homes Investors #204, 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 limited partnerships in which 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 such limited partnerships.
Income Tax Examination Description	We have elected to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code (“Code”), for federal income tax purposes. To maintain our qualification as a REIT, we are required to distribute at least 90% of our REIT taxable income to our stockholders and meet the various other requirements imposed by the Code relating to such matters as operating results, asset holdings, distribution levels and diversity of stock ownership.
Percentage of distributed taxable income to qualify as REIT	90.00%
Uncertain tax position requiring recognition | $	$ 0
Model Home Properties [Member]
Real Estate Properties [Line Items]
Number of properties | Property	147
Area of Real Estate Property | ft²	420,485
Number of limited partnerships in which the company is sole General Partner | Counterparty_Investment	4
Office, Industrial Properties And Medical Building [Member]
Real Estate Properties [Line Items]
Number of properties | Property	17
Area of Real Estate Property | ft²	1,463,390
Retail Properties [Member]
Real Estate Properties [Line Items]
Number of properties | Property	5
Area of Real Estate Property | ft²	228,260