Note 3 - Investments - Gross Unrealized Losses (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale securities, less than 12 months, fair value	$ 6,124,174	$ 6,253,723
Available-for-sale securities, less than 12 months, unrealized loss	(80,681)	(200,355)
Available-for-sale securities, greater than 12 months, fair value	2,168,926	1,394,448
Available-for-sale securities, greater than 12 months, unrealized loss	(73,776)	(80,676)
Available-for-sale securities, fair value	8,293,100	7,648,170
Available-for-sale securities, unrealized loss	(154,457)	(281,031)
Fixed Maturities [Member]
Available-for-sale securities, less than 12 months, fair value	4,840,736	5,193,023
Available-for-sale securities, less than 12 months, unrealized loss	(75,682)	(136,279)
Available-for-sale securities, greater than 12 months, fair value	989,421	330,489
Available-for-sale securities, greater than 12 months, unrealized loss	(14,201)	(8,276)
Available-for-sale securities, fair value	5,830,157	5,523,512
Available-for-sale securities, unrealized loss	(89,883)	(144,555)
Fixed Maturities [Member] | US Treasury Securities [Member]
Available-for-sale securities, less than 12 months, fair value	240,475	299,162
Available-for-sale securities, less than 12 months, unrealized loss	(29,054)	(15,830)
Available-for-sale securities, greater than 12 months, fair value
Available-for-sale securities, greater than 12 months, unrealized loss
Available-for-sale securities, fair value	240,475	299,162
Available-for-sale securities, unrealized loss	(29,054)	(15,830)
Fixed Maturities [Member] | US Government Agencies Debt Securities [Member]
Available-for-sale securities, less than 12 months, fair value	299,303
Available-for-sale securities, less than 12 months, unrealized loss	(539)
Available-for-sale securities, greater than 12 months, fair value
Available-for-sale securities, greater than 12 months, unrealized loss
Available-for-sale securities, fair value	299,303
Available-for-sale securities, unrealized loss	(539)
Fixed Maturities [Member] | Corporate Debt Securities [Member]
Available-for-sale securities, less than 12 months, fair value	1,734,089	1,897,000
Available-for-sale securities, less than 12 months, unrealized loss	(14,488)	(42,994)
Available-for-sale securities, greater than 12 months, fair value	798,161	196,399
Available-for-sale securities, greater than 12 months, unrealized loss	(11,129)	(2,240)
Available-for-sale securities, fair value	2,532,250	2,093,399
Available-for-sale securities, unrealized loss	(25,617)	(45,234)
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, less than 12 months, fair value	1,571,608	1,296,688
Available-for-sale securities, less than 12 months, unrealized loss	(18,464)	(38,191)
Available-for-sale securities, greater than 12 months, fair value	98,945
Available-for-sale securities, greater than 12 months, unrealized loss	(1,055)
Available-for-sale securities, fair value	1,670,553	1,296,688
Available-for-sale securities, unrealized loss	(19,519)	(38,191)
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member]
Available-for-sale securities, less than 12 months, fair value	995,261	1,700,173
Available-for-sale securities, less than 12 months, unrealized loss	(13,137)	(39,264)
Available-for-sale securities, greater than 12 months, fair value	92,315	134,090
Available-for-sale securities, greater than 12 months, unrealized loss	(2,017)	(6,036)
Available-for-sale securities, fair value	1,087,576	1,834,263
Available-for-sale securities, unrealized loss	(15,154)	(45,300)
Equity Securities [Member]
Available-for-sale securities, less than 12 months, fair value	1,283,438	1,007,860
Available-for-sale securities, less than 12 months, unrealized loss	(4,999)	(59,357)
Available-for-sale securities, greater than 12 months, fair value	1,179,505	1,063,959
Available-for-sale securities, greater than 12 months, unrealized loss	(59,575)	(72,400)
Available-for-sale securities, fair value	2,462,943	2,071,819
Available-for-sale securities, unrealized loss	$ (64,574)	(131,757)
Other Equity Investments [Member]
Available-for-sale securities, less than 12 months, fair value		52,840
Available-for-sale securities, less than 12 months, unrealized loss		(4,719)
Available-for-sale securities, greater than 12 months, fair value
Available-for-sale securities, greater than 12 months, unrealized loss
Available-for-sale securities, fair value		52,840
Available-for-sale securities, unrealized loss		(4,719)
Equities, Including Equity Securities and Other Equity Investments [Member]
Available-for-sale securities, less than 12 months, fair value		1,060,700
Available-for-sale securities, less than 12 months, unrealized loss		(64,076)
Available-for-sale securities, greater than 12 months, fair value		1,063,959
Available-for-sale securities, greater than 12 months, unrealized loss		(72,400)
Available-for-sale securities, fair value		2,124,659
Available-for-sale securities, unrealized loss		$ (136,476)