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ORGANIZATION AND BASIS OF PRESENTATION (Detail) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) ft² Property Counterparty | Dec. 31, 2019 USD ($) ft² Property Tenants Counterparty | Dec. 31, 2018 | Sep. 17, 2019 USD ($) | Oct. 31, 2017 Property
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property |  |  |  |  | 1
Number of limited partnerships in which the company is sole General Partner | Counterparty | 2 | 2 |  |  |
Number of partnerships that purchase and lease back model homes from homebuilders in which the company is the general and limited partner | Counterparty | 5 | 5 |  |  |
Key provisions of operating or partnership agreement | The Company or one of its affiliates operate the following partnerships during the periods covered by these condensed consolidated financial statements: • The Company is the sole general partner and a limited partner in two limited partnerships (NetREIT Palm Self-Storage LP and NetREIT Casa Grande LP), all with ownership interests in entities that own real estate income producing properties. • The Company is the general and/ or limited partner in five limited partnerships that purchase Model Homes and lease them back to homebuilders (Dubose Model Home Investors #202, LP, Dubose Model Home Investors #203, LP, Dubose Model Home Investors #204, LP, Dubose Model Home Investors #205, LP and NetREIT Dubose Model Home REIT, LP). The Company refers to these entities collectively as the “Model Home Partnerships”. |  |  |  |
Income tax 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. | We have elected to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code (the "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% | 90.00% |  |  |
Long-term maturity debt, remaining in 2019 | $ 20,215,786 |  |  |  |
Long-term maturity debt, in 2020 | 23,422,230 | $ 16,892,476 |  |  |
Long-term maturity debt, in 2021 | $ 18,055,459 | 18,472,632 |  |  |
Mortgage notes payable in 2020 |  | $ 29,166,847 |  |  |
Industrial Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property | 1 | 1 |  |  |
Office Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property | 10 | 12 |  |  |
Industrial Office Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Area of Real Estate Property | ft² | 998,016 | 1,192,566 |  |  |
Retail Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property | 4 | 4 |  |  |
Area of Real Estate Property | ft² | 131,722 | 131,722 |  |  |
Residential Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property | 138 | 136 |  |  |
Number of corporations | Property | 1 | 1 |  |  |
Number of limited partnerships in which the company is sole General Partner | Counterparty | 5 |  |  |  |
Customer Concentration Risk | Rental Income |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Number of tenant | Tenants |  | 1 |  |  |
Concentration risk, percentage |  | 6.10% | 5.70% |  |
Model Home properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
No of Properties | Property | 138 |  |  |  |
Area of Real Estate Property | ft² | 390,490 |  |  |  |
Model Home |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Long-term maturity debt, remaining in 2019 | $ 9,903,239 |  |  |  |
Long-term maturity debt, in 2020 | 12,949,485 | $ 11,932,259 |  |  |
Long-term maturity debt, in 2021 | 8,345,200 | 8,416,975 |  |  |
Mortgage notes payable in 2020 |  | 12,294,895 |  |  |
Notes Payable to Banks | Polar Multi Strategy Master Fund |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Long-term Debt |  |  |  | $ 14,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 8.00% |
Notes Payable to Banks | Commercial Property |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Long-term Debt |  |  |  | $ 14,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 8.00% |
Mortgage Notes Payable | Model Home properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Mortgage notes payable in 2020 |  | 12,300,000 |  |  |
Mortgage Notes Payable | Commercial Property |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Long-term maturity debt, in 2020 | 10,300,000 |  |  |  |
Mortgage notes payable in 2020 |  | $ 16,900,000 |  |  |
Mortgage Notes Payable | Model Home |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Long-term maturity debt, remaining in 2019 | 20,200,000 |  |  |  |
Long-term maturity debt, in 2020 | 9,900,000 |  |  |  |
Long-term maturity debt, in 2021 | $ 23,400,000 |  |  |  |
Partial Interest Properties |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Number of commercial properties own in fee interest | Property |  |  |  |  | 16

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