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Organization and Basis of Presentation (Details) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 01, 2019 USD ($) shares | Dec. 31, 2018 USD ($) Counterparty Segment Tenant shares | Dec. 31, 2017 shares | Oct. 31, 2017 Property
Organization And Basis Of Presentation [Line Items] |  |  |  |
Number of property own that have partial interest | Property |  |  |  | 1
Number of limited partnerships in which the company is sole General Partner | Counterparty |  | 2 |  |
Key provisions of operating or partnership agreement, description |  | The following partnership activity occurred during the periods covered by these consolidated financial statements:The Company is the sole General Partner in two consolidated 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”.The Company is a limited partner in four partnerships and one limited liability corporation that purchase and leaseback model homes from developers (“Dubose Model Homes 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 Entities”. 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 holds a non-controlling interest in these limited partnerships through the Company. |  |
Number of partnerships that purchase and leaseback model homes from developers in which the company is a limited partner | Counterparty |  | 4 |  |
Number of limited liability corporation that purchase and leaseback model homes from developers in which the company is a limited partner | Counterparty |  | 1 |  |
Mortgage notes payable | $ |  | $ 9.9 |  |
Mortgage notes payable maturing year |  | 2019 |  |
Number of reportable segments | Segment |  | 3 |  |
Customer Concentration Risk | Rental Income [Member] |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |
Number of tenant | Tenant |  | 1 |  |
Concentration risk, percentage |  | 5.70% |  |
Redeemable Convertible Preferred Stock Series B [Member] |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |
Number of shares redeemed | shares |  | 13,800 | 2,000 |
Redeemable preferred stock | $ |  | $ 16.9 |  |
Redeemable Convertible Preferred Stock Series B [Member] | Scenario Forecast [Member] |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |
Number of shares redeemed | shares | 16,900 |  |  |
Redeemable preferred stock | $ | $ 16.9 |  |  |
Partial Interest Properties |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |
Number of commercial properties own in fee interest | Property |  |  |  | 18

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