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Note 5 - Investments - Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Investment income	$ 725	$ 1,058
Cash and Cash Equivalents [Member]
Investment income	345	337
Fixed Income Securities [Member]
Investment income	18	102
Series B Cumulative Convertible Preferred Stock [Member] \| HC Government Realty Trust, Inc [Member]
Dividends on investment in HC Series B Stock	0	256
Partnership [Member]
Investment income	$ 362	$ 363

Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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