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INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2025	Dec. 31, 2024
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		$ 17,273	$ 25,232
Gross Unrealized Gains	$ 824	866
Debt Securities, Trading, Unrealized Loss	(308)	(317)
Investments in trading securities		17,822	25,748
Cost		18,316	26,788
Gross Unrealized Gains	1,226	1,796
Debt Securities, Trading, and Equity Securities, Unrealized Loss	(320)	(344)
Estimated Fair Value		19,768	27,694
Equity Method Investments	4,578	4,197	4,250
Investment Owned, at Fair Value		19,768	27,694
Investments under fair value measurement alternative		11,747	10,747
Total investments		35,712	42,691
InvestCloud private investment		4,455	4,455
Investment carrying value - Vista		2,792	2,792
WEBs - preferred stock		1,799	1,799
WEBs - call option		201	201
TXSE - private investment		1,500	1,500
Investment carrying value - Ridgeline		1,000
Total investments under measurement alternative		$ 11,747	$ 10,747
Zarvona Energy Fund GP , L.P .
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Equity Method Investment, Ownership Percentage		50.00%	50.00%
Equity Method Investments		$ 3,447	$ 3,524
Zarvona Energy Fund II-A, L.P .
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Equity Method Investment, Ownership Percentage		0.50%	0.50%
Equity Method Investments		$ 731	$ 707
Salient MLP Total Return Fund, L.P. [Domain]
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Equity Method Investment, Ownership Percentage		0.00%	0.00%
Equity Method Investments		$ 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%
Equity Method Investments		$ 8	$ 8
Total
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Equity Method Investments		4,197	4,250
U.S. Government securities
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		8,245	15,859
Gross Unrealized Gains	263	266
Debt Securities, Trading, Unrealized Loss	(66)	(80)
Investments in trading securities		8,431	16,056
Money market funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		7,650	7,629
Gross Unrealized Gains	174	174
Debt Securities, Trading, Unrealized Loss	0	0
Investments in trading securities		7,824	7,803
Equity funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		936	1,432
Gross Unrealized Gains	318	338
Debt Securities, Trading, Unrealized Loss	(132)	(129)
Investments in trading securities		1,145	1,618
Equity Securities
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		301	183
Gross Unrealized Gains	69	88
Debt Securities, Trading, Unrealized Loss	(108)	(108)
Investments in trading securities		281	144
us-gaap_EquitySecuritiesMember [Member]
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		141	129
Gross Unrealized Gains	0	0
Debt Securities, Trading, Unrealized Loss	(2)	0
Investments in trading securities		141	127
Private investment funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost		1,043	1,556
Gross Unrealized Gains	402	930
Equity Securities, FV-NI, Unrealized Loss	$ (12)	(27)
Estimated Fair Value		$ 1,946	$ 1,946

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