v3.26.1
INVESTMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Net change in unrealized depreciation on private investments $ 0 $ 0   $ (15) $ 0  
Realized Investment Gains (Losses)     $ 0 (2,046) 0  
Equity investments 12,024     12,024   $ 17,887
Cost 18,524     18,524   19,923
Gross Unrealized Gains   1,864   1,374    
Debt Securities, Trading, and Equity Securities, Unrealized Loss   (354)   (291)    
Estimated Fair Value 19,607     19,607   21,433
Equity Method Investments 4,195 4,197   4,195 $ 4,197 4,303
Investment Owned, at Fair Value 19,607     19,607   21,433
Investments under fair value measurement alternative 14,305     14,305   15,697
Total investments 38,107     38,107   41,433
InvestCloud private investment 4,455     4,455   4,455
Investment carrying value - Vista 0     0   2,792
WEBs - preferred stock 5,199     5,199   3,799
WEBs - call option 201     201   201
TXSE - private investment 3,450     3,450   3,450
Investment carrying value - Ridgeline 1,000     1,000   1,000
Total investments under measurement alternative 14,305     14,305   $ 15,697
Realized gain on private investment $ 2,000     $ 2,000    
Zarvona Energy Fund GP , L.P .            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Equity Method Investment, Ownership Percentage 50.00%     50.00%   50.00%
Equity Method Investments $ 3,458     $ 3,458   $ 3,544
Zarvona Energy Fund II-A, L.P .            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Equity Method Investment, Ownership Percentage 0.50%     0.50%   0.50%
Equity Method Investments $ 718     $ 718   $ 740
Salient MLP Total Return Fund, L.P. [Domain]            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Equity Method Investment, Ownership Percentage 0.00%     0.00%   0.00%
Equity Method Investments $ 11     $ 11   $ 11
Salient MLP Total Return TE Fund, L.P.            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Equity Method Investment, Ownership Percentage 0.20%     0.20%   0.20%
Equity Method Investments $ 8     $ 8   $ 8
Total            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Equity Method Investments 4,195     4,195   4,303
U.S. Government securities            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 5,067     5,067   11,712
Gross Unrealized Gains   259   111    
Debt Securities, Trading, Unrealized Loss   (33)   0    
Equity investments 5,178     5,178   11,938
Money market funds            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 4,707     4,707   4,455
Gross Unrealized Gains   174   0    
Debt Securities, Trading, Unrealized Loss   0   (1)    
Equity investments 4,706     4,706   4,629
Equity funds            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 1,182     1,182   617
Gross Unrealized Gains   363   132    
Debt Securities, Trading, Unrealized Loss   (127)   (4)    
Equity investments 1,310     1,310   853
Equity Securities            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 558     558   380
Gross Unrealized Gains   102   131    
Debt Securities, Trading, Unrealized Loss   (164)   (95)    
Equity investments 594     594   318
us-gaap_EquitySecuritiesMember [Member]            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 148     148   148
Gross Unrealized Gains   1   0    
Debt Securities, Trading, Unrealized Loss   0   0    
Equity investments 148     148   149
Private investment funds            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 6,762     6,762   2,611
Gross Unrealized Gains   965   1,000    
Equity Securities, FV-NI, Unrealized Loss   $ (30)   (179)    
Estimated Fair Value 7,583     7,583   $ 3,546
Exchange Traded Funds            
Equity Securities, FV-NI, Gain (Loss) [Abstract]            
Cost 100     100    
Gross Unrealized Gains       0    
Debt Securities, Trading, Unrealized Loss       (12)    
Equity investments $ 88     $ 88