Note 2 - Investments - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Investments (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Cost or Amortized Cost	$ 40,625,266	$ 40,054,185
Gross Unrealized Gains	2,635,666	204,871
Gross Unrealized Losses	(287,430)	(2,389,278)
Investments in available-for-sale securities, at fair value	42,973,502	37,869,778
One year or less, amortized cost	99,982
One year or less, fair value	100,248
After one year through five years, amortized cost	1,373,790	1,472,228
After one year through five years, fair value	1,417,814	1,462,745
After five years through ten years, amortized cost	3,336,835	2,101,676
After five years through ten years, fair value	3,624,467	2,055,173
More than 10 years, amortized cost	20,094,473	20,430,838
More than 10 years, fair value	22,148,825	19,492,496
Total amortized cost and fair value	28,637,496	27,957,697
Total amortized cost and fair value	31,122,483	26,882,239
Fixed Maturities [Member]
Cost or Amortized Cost	28,637,496	27,957,697
Gross Unrealized Gains	2,500,295	173,366
Gross Unrealized Losses	(15,308)	(1,248,824)
Investments in available-for-sale securities, at fair value	31,122,483	26,882,239
Equity Securities [Member]
Cost or Amortized Cost	11,987,770	12,096,488
Gross Unrealized Gains	135,371	31,505
Gross Unrealized Losses	(272,122)	(1,140,454)
Investments in available-for-sale securities, at fair value	11,851,019	10,987,539
US Treasury Securities [Member] | Fixed Maturities [Member]
Cost or Amortized Cost	606,686	597,265
Gross Unrealized Gains	23,630
Gross Unrealized Losses		(27,325)
Investments in available-for-sale securities, at fair value	630,316	569,940
Corporate Debt Securities [Member] | Fixed Maturities [Member]
Cost or Amortized Cost	17,755,495	16,847,623
Gross Unrealized Gains	1,629,401	43,051
Gross Unrealized Losses	(10,417)	(1,048,313)
Investments in available-for-sale securities, at fair value	19,374,479	15,842,361
US States and Political Subdivisions Debt Securities [Member] | Fixed Maturities [Member]
Cost or Amortized Cost	6,542,899	6,559,854
Gross Unrealized Gains	743,660	118,890
Gross Unrealized Losses		(80,631)
Investments in available-for-sale securities, at fair value	7,286,559	6,598,113
Redeemable Preferred Stock [Member]
Debt securities, amortized cost	99,560	99,560
Debt securities, fair value	106,920	90,840
Redeemable Preferred Stock [Member] | Fixed Maturities [Member]
Cost or Amortized Cost	99,560	99,560
Gross Unrealized Gains	7,360
Gross Unrealized Losses		(8,720)
Investments in available-for-sale securities, at fair value	106,920	90,840
Collateralized Mortgage Backed Securities [Member]
Debt securities, amortized cost	3,632,856	3,853,395
Debt securities, fair value	3,724,209	3,780,985
Collateralized Mortgage Backed Securities [Member] | Fixed Maturities [Member]
Cost or Amortized Cost	3,632,856	3,853,395
Gross Unrealized Gains	96,244	11,425
Gross Unrealized Losses	(4,891)	(83,835)
Investments in available-for-sale securities, at fair value	$ 3,724,209	$ 3,780,985