Note 3 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Investments in available-for-sale securities, at fair value	$ 40,567,214	$ 37,869,778
Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	40,567,214	37,869,778
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	12,485,250	11,557,479
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	27,885,964	26,112,299
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	196,000	200,000
Fixed Maturities [Member]
Investments in available-for-sale securities, at fair value	28,671,748	26,882,239
Fixed Maturities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	28,671,748	26,882,239
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	589,784	569,940
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	27,885,964	26,112,299
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	196,000	200,000
Fixed Maturities [Member] | US Treasury Securities [Member]
Investments in available-for-sale securities, at fair value	589,784	569,940
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	589,784	569,940
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	589,784	569,940
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Corporate Debt Securities [Member]
Investments in available-for-sale securities, at fair value	17,383,167	15,842,361
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	17,383,167	15,842,361
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	17,187,167	15,642,361
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	196,000	200,000
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member]
Investments in available-for-sale securities, at fair value	6,800,040	6,598,113
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	6,800,040	6,598,113
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	6,800,040	6,598,113
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Redeemable Preferred Stock [Member]
Investments in available-for-sale securities, at fair value	99,200	90,840
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	99,200	90,840
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	99,200	90,840
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member]
Investments in available-for-sale securities, at fair value	3,799,557	3,780,985
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	3,799,557	3,780,985
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	3,799,557	3,780,985
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member]
Investments in available-for-sale securities, at fair value	11,895,466	10,987,539
Equity Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	11,895,466	10,987,539
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	11,895,466	10,987,539
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value