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Note 4 - Other Recent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 01, 2024	Jan. 09, 2019	Oct. 03, 2016	Jan. 31, 2017	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Aug. 31, 2026	Aug. 31, 2025	May 19, 2025	Feb. 25, 2025	Feb. 24, 2025	Dec. 31, 2022
Gain (Loss) on Sales of Management Contracts							$ 2,734	$ 0	$ 0
Equity Method Investments						$ 6,661	6,661	23,430	14,241						$ 8,929
Equity Method Investment, Realized Gain (Loss) on Disposal							(836)	$ (0)	$ (0)
The 2024 Note [Member]
Debt Instrument, Face Amount	$ 5,146
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Debt Instrument, Amount Due and Payable										$ 2,573	$ 2,573
JKD Capital Partners I, LTD [Member] \| Investment Agreement [Member]
Redeemable Financial Instruments	$ 7,719		$ 12,000
Proceeds from Redeemable Financial Instruments		$ 1,268	$ 6,000	$ 1,000
Payments for Redeemable Financial Instruments	$ 2,573					$ 2,573
Vellar Opportunities GP, LLC [Member]
Equity Method Investment, Ownership Percentage													33.40%	33.40%
Equity Method Investments													$ 10
Equity Method Investment, Realized Gain (Loss) on Disposal					$ (836)
Contractual Obligation													1,084	$ 2,121
Vellar Opportunities GP, LLC [Member] \| Maximum [Member]
Contractual Obligation													2,121
Vellar Opportunities GP, LLC [Member] \| Minimum [Member]
Contractual Obligation													1,084
CDO Collateral Management Contracts [Member]
Gain (Loss) on Sales of Management Contracts							2,734
Sales Price of Management Contract							3,500
Management Fee Expense							$ 766
BRR Shares [Member]
Investment Owned, Balance, Shares (in shares)						2,151,666	2,151,666
Investment Owned, Balance, Principal Amount						$ 7,595	$ 7,595
Investment Owned, Closing Share Price (in dollars per share)						$ 10.21	$ 10.21
Gain (Loss) on Investments							$ (452)
Investment Owned, Shares Received (in shares)							392,000
Columbus Circle Warrants [Member]
Investment Owned, Shares Received (in shares)							196,000
BRR Shares and Columbus Circle Warrants [Member]
Investment Owned, Shares Receivable, Value							$ 1,521
Columbus Circle Capital Corp I [Member] \| IPO [Member]
Units Issued During Period, Number of Units (in shares)												25,000,000
Columbus Circle Capital Corp I [Member] \| Over-Allotment Option [Member]
Units Issued During Period, Number of Units (in shares)												3,000,000
Vellar Opportunities GP, LLC [Member] \| Operating LLC [Member] \| Maximum [Member]
Contractual Obligation													$ 4,234