Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
INVESTMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Net change in unrealized appreciation on private investments	$ 2,883	$ 1,932		$ 2,868	$ 1,932
Realized Investment Gains (Losses)			$ 0	(2,046)	0
Equity investments	11,702			11,702		$ 17,887
Cost	21,516			21,516		19,923
Gross Unrealized Gains		1,864		2,412
Debt Securities, Trading, and Equity Securities, Unrealized Loss		(354)		(263)
Estimated Fair Value	23,665			23,665		21,433
Equity Method Investments	4,318	4,263		4,318	$ 4,263	4,303
Investment Owned, at Fair Value	23,665			23,665		21,433
Investments under fair value measurement alternative	17,189			17,189		15,697
Total investments	45,172			45,172		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	6,000			6,000		3,450
Investment carrying value - Ridgeline	1,334			1,334		1,000
Total investments under measurement alternative	17,189			17,189		$ 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	$ 3,560			$ 3,560		$ 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	$ 739			$ 739		$ 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	4,318			4,318		4,303
U.S. Government securities
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	5,053			5,053		11,712
Gross Unrealized Gains		259		111
Debt Securities, Trading, Unrealized Loss		(33)		0
Equity investments	5,164			5,164		11,938
Money market funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	4,794			4,794		4,455
Gross Unrealized Gains		174		0
Debt Securities, Trading, Unrealized Loss		0		(1)
Equity investments	4,793			4,793		4,629
Equity funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	1,091			1,091		617
Gross Unrealized Gains		363		53
Debt Securities, Trading, Unrealized Loss		(127)		(5)
Equity investments	1,139			1,139		853
Equity Securities
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	326			326		380
Gross Unrealized Gains		102		114
Debt Securities, Trading, Unrealized Loss		(164)		(63)
Equity investments	377			377		318
us-gaap_EquitySecuritiesMember [Member]
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	141			141		148
Gross Unrealized Gains		1		0
Debt Securities, Trading, Unrealized Loss		0		0
Equity investments	141			141		149
Private capital investment funds
Equity Securities, FV-NI, Gain (Loss) [Abstract]
Cost	10,011			10,011		2,611
Gross Unrealized Gains		965		2,134
Equity Securities, FV-NI, Unrealized Loss		$ (30)		(182)
Estimated Fair Value	11,963			11,963		$ 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