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Restricted Unit Awards - Additional Information (Details) - Restricted Unit Awards [Member] - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Unrecognized compensation expense related to nonvested RUAs granted $ 2,200,000  
Remaining compensation expense expected to be recognized over a weighted-average period 1 year 3 months 18 days  
Intrinsic value of unvested RUAs $ 2,800,000  
General and Administrative Expenses [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Compensation expense $ 234,000 $ 332,000
2015 Equity Incentive Plan [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
RSU available for future issuance 185,000  
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