Note 1 - Description of Business and Significant Accounting Policies 1 (Details Textual)	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Number of Wholly-Owned Operating Subsidiaries	5
Debt Securities, Available for Sale, Other Than Temporary Impairment Losses	$ 0	$ 0
Cash, FDIC Insured Amount	250,000
Cash, Uninsured Amount	0
Reinsurance Recoverable, Allowance for Credit Loss, Ending Balance	$ 0	0
Amortization of Value of Business Acquired (VOBA), Amortization Period (Year)	30 years
Unrecognized Tax Benefits, Ending Balance	$ 0	$ 0
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.10	$ 0.10
Common Stock, Shares Authorized (in shares) | shares	20,000,000	20,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares) | shares	7,746,922	7,745,404
Weighted Average Number of Shares Outstanding, Basic, Total (in shares) | shares	7,746,318	7,743,273
Common Stock, Shares, Issued (in shares) | shares	7,746,922	7,745,404
Policyholder Benefit Reserves [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable	$ 131,489	$ 115,524
Computer Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	$ 0	$ 0