Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2020 |
Feb. 07, 2020 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Jan. 01, 2020 |
Dec. 31, 2019 |
|
| Significant Accounting Policies [Line Items] | ||||||||
| Additional impairment charges | $ 0 | |||||||
| Impairment of real estate assets | $ 534,000 | $ 0 | 2,667,000 | $ 1,017,000 | ||||
| Provision for credit loss | $ 323,000 | |||||||
| Income taxes | 402,000 | 305,000 | 951,000 | 748,000 | ||||
| Internalization fees | 389,000 | 272,000 | 1,594,000 | 272,000 | ||||
| Other Nonoperating Income (Expenses) | ||||||||
| Significant Accounting Policies [Line Items] | ||||||||
| Income taxes | 305,000 | 748,000 | ||||||
| Internalization fees | $ 272,000 | $ 272,000 | ||||||
| Fair Value Inputs Level3 [Member] | ||||||||
| Significant Accounting Policies [Line Items] | ||||||||
| Weighted average expected IPO date | Oct. 21, 2020 | Apr. 15, 2020 | ||||||
| IPO | ||||||||
| Significant Accounting Policies [Line Items] | ||||||||
| Deferred offering costs | $ 1,282,000 | $ 1,282,000 | $ 1,282,000 | $ 668,000 | ||||