Note 1 - Description of Business and Significant Accounting Policies - Information About Deferred Acquisition Costs (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Balance at beginning of period	$ 6,354,875	$ 7,105,890
Capitalization of commissions, sales and issue expenses	479,681	459,330
Amortization net of interest	(1,205,554)	(1,210,345)
Balance at end of period	$ 5,629,002	$ 6,354,875