Note 3 - Investments - Amortized Cost and Fair Value of Debt Securities By Contractual Maturity (Details)	Sep. 30, 2017 USD ($)
One year or less, amortized cost	$ 200,568
One year or less, fair value	200,473
After one year through five years, amortized cost	1,932,156
After one year through five years, fair value	1,933,444
After five years through ten years, amortized cost	2,490,661
After five years through ten years, fair value	2,517,547
More than 10 years, amortized cost	7,635,778
More than 10 years, fair value	7,825,315
Total fixed maturities, amortized cost	14,911,919
Total fixed maturities, fair value	15,153,824
Redeemable Preferred Stock [Member]
Debt securities, amortized cost	99,560
Debt securities, fair value	100,040
Collateralized Mortgage Backed Securities [Member]
Debt securities, amortized cost	2,553,196
Debt securities, fair value	$ 2,577,005