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Restricted Unit Awards - Additional Information (Details) - Restricted Unit Awards [Member] - USD ($) | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Unrecognized compensation expense related to nonvested RUAs granted | $ 2,400,000 |
Remaining compensation expense expected to be recognized over a weighted-average period | 1 year 3 months 18 days |
Intrinsic value of unvested RUAs | $ 3,300,000 |
General and Administrative Expenses [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Compensation expense | $ 332,000 | $ 350,000
2015 Equity Incentive Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
RSU available for future issuance | 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 |
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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