Note 4 - Investments - Details Investments by Major Investment Category (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Fixed income securities, held-to-maturity		$ 3,122	$ 4,314
Fair value total		4,366	5,242
Amortized cost total		4,402	5,314
US Government Agencies Debt Securities [Member]
Fair value	[1]	3,086	4,242
Fixed income securities, held-to-maturity	[1]	3,122	4,314
Gross unrealized gains		0	0
Gross unrealized losses		(36)	(72)
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Fair value	[2]	1,280	1,000
Investments in limited partnerships	[2]	$ 1,280	$ 1,000

[1] Our held-to-maturity investment portfolio is reported at amortized cost, net of valuation allowance. All securities within the portfolio are rated AA+ by Standard & Poor’s Rating Services (“S&P”).

[2] As of December 31, 2023, there are no unfunded commitments related to the investment in limited partnership. This limited partnership invests in property catastrophe risk through customized reinsurance solutions. The underlying assets of the limited partnership are one year or less in duration and the Company’s proceeds may be redeemed or reinvested annually. Changes in net asset value of the investment in limited partnership are included in "Net investment income" on the Company’s Consolidated Statements of Operations.