Income Taxes - Schedule of Income Tax Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Income Tax Expenses [Line Items] | |||
| Federal income tax | $ 122 | $ 0 | $ 19 |
| Total income tax expense | 907 | 394 | 965 |
| State income tax | |||
| Income Tax Expenses [Line Items] | |||
| State income tax and built-in gain tax | 785 | 394 | 899 |
| REIT state built-in gain tax expense | |||
| Income Tax Expenses [Line Items] | |||
| State income tax and built-in gain tax | $ 0 | $ 0 | $ 47 |