Note 4 - Fair Value Measurements - Estimated Fair Values of the Company's Financial Assets and Liabilities (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	$ 11,015,077	$ 3,145,745
Investment income due and accrued	124,745	100,713
Policy loans	33,376
Investments, at fair value	22,819,321	15,463,578
Total Financial Assets	33,992,519	18,710,036
Financial Liabilities:
Policyholder deposits in deposit-type contracts	12,749,556	3,398,170
Total Financial Liabilities	12,749,556	3,398,170
Estimate of Fair Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	11,015,077	3,145,745
Investment income due and accrued	124,745	100,713
Policy loans	33,376
Investments, at fair value	22,819,321	15,463,578
Total Financial Assets	33,992,519	18,710,036
Financial Liabilities:
Policyholder deposits in deposit-type contracts	11,950,167	3,260,086
Total Financial Liabilities	$ 11,950,167	$ 3,260,086