Note 4 - Investments - Major Categories of Net Interest and Dividend Income (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Fixed maturity investments									$ 348,551	$ 335,047
Short term investments and cash and cash equivalents									69,218	20,210
Dividends earned									209,307	175,688
Investment expenses									(148,965)	(146,536)
Net investment income	$ 122,968	$ 125,491	$ 106,610	$ 123,042	$ 116,501	$ 92,215	$ 87,224	$ 88,469	$ 478,111	$ 384,409