Quarterly report [Sections 13 or 15(d)]

FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)

v3.25.1
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Liabilities:    
General Partner Notes Payable $ 428,782 $ 418,347
Level 1    
Liabilities:    
General Partner Notes Payable 0 0
Level 2    
Liabilities:    
General Partner Notes Payable 0 0
Level 3    
Liabilities:    
General Partner Notes Payable 428,782 418,347
Measured at NAV    
Assets:    
Accrued performance allocations 327,150 339,560
Partnership interests 162,035 168,545
Fair Value, Recurring    
Assets:    
Accrued performance allocations 327,150 339,560
Partnership interests 162,035 168,545
Other investments 12,801 12,615
Total assets at fair value 523,383 541,839
Liabilities:    
General Partner Notes Payable 2,455 2,782
Fair Value, Recurring | Common shares in publicly traded company    
Assets:    
Marketable securities 51 73
Fair Value, Recurring | Exchange traded funds    
Assets:    
Marketable securities 3,268 3,157
Fair Value, Recurring | Mutual funds    
Assets:    
Marketable securities 18,078 17,889
Fair Value, Recurring | Level 1    
Assets:    
Accrued performance allocations 0 0
Partnership interests 0 0
Other investments 0 0
Total assets at fair value 21,397 21,119
Liabilities:    
General Partner Notes Payable 0 0
Fair Value, Recurring | Level 1 | Common shares in publicly traded company    
Assets:    
Marketable securities 51 73
Fair Value, Recurring | Level 1 | Exchange traded funds    
Assets:    
Marketable securities 3,268 3,157
Fair Value, Recurring | Level 1 | Mutual funds    
Assets:    
Marketable securities 18,078 17,889
Fair Value, Recurring | Level 2    
Assets:    
Accrued performance allocations 0 0
Partnership interests 0 0
Other investments 0 0
Total assets at fair value 0 0
Liabilities:    
General Partner Notes Payable 0 0
Fair Value, Recurring | Level 2 | Common shares in publicly traded company    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Level 2 | Exchange traded funds    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Level 2 | Mutual funds    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Level 3    
Assets:    
Accrued performance allocations 0 0
Partnership interests 0 0
Other investments 12,801 12,615
Total assets at fair value 12,801 12,615
Liabilities:    
General Partner Notes Payable 0 0
Fair Value, Recurring | Level 3 | Common shares in publicly traded company    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Level 3 | Exchange traded funds    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Level 3 | Mutual funds    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Measured at NAV    
Assets:    
Accrued performance allocations 327,150 339,560
Partnership interests 162,035 168,545
Other investments 0 0
Total assets at fair value 489,185 508,105
Liabilities:    
General Partner Notes Payable 2,455 2,782
Fair Value, Recurring | Measured at NAV | Common shares in publicly traded company    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Measured at NAV | Exchange traded funds    
Assets:    
Marketable securities 0 0
Fair Value, Recurring | Measured at NAV | Mutual funds    
Assets:    
Marketable securities $ 0 $ 0