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Restricted Unit Awards - Additional Information (Details) - Restricted Unit Awards [Member] - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense related to nonvested RUAs granted | $ 1,900,000 |  | $ 1,900,000 |
Remaining compensation expense expected to be recognized over a weighted-average period |  |  | 1 year 1 month 6 days |
Intrinsic value of unvested RUAs |  |  | $ 3,000,000 |
General and Administrative Expenses [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Compensation expense | $ 559,000 | $ 587,000 | $ 891,000 | $ 937,000
2015 Equity Incentive Plan [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
RSU available for future issuance | 292,000 |  | 292,000 |
2015 Equity Incentive Plan [Member] | Greystone Manager [Member] | Maximum [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Approved grant of restricted units and other awards to employees | 1,000,000 |  | 1,000,000 |
RUAs granted with vesting range |  |  | 3 years |
2015 Equity Incentive Plan [Member] | Greystone Manager [Member] | Minimum [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
RUAs granted with vesting range |  |  | 3 months |

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