Note 3 - Investments - Fixed Maturities and Short-term Investments (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale Securities, Amortized Cost Basis, Total	$ 7,293,495	$ 9,806,866
Available-for-sale securities, gross unrealized gain	54,194	11,364
Available-for-sale securities, gross unrealized loss	(64,490)	(262,001)
Available-for-sale securities, fair value	7,283,199	9,556,229
Money Market Funds [Member]
Available-for-sale Securities, Amortized Cost Basis, Total	664,549	454,224
Available-for-sale securities, gross unrealized gain		0
Available-for-sale securities, gross unrealized loss		0
Available-for-sale securities, fair value	664,549	454,224
Certificates of Deposit Short Term [Member]
Available-for-sale Securities, Amortized Cost Basis, Total	350,000	400,000
Available-for-sale securities, gross unrealized gain		808
Available-for-sale securities, gross unrealized loss
Available-for-sale securities, fair value	350,000	400,808
Certificates of Deposit, Fixed Maturities [Member]
Available-for-sale Securities, Amortized Cost Basis, Total	349,951	499,941
Available-for-sale securities, gross unrealized gain
Available-for-sale securities, gross unrealized loss
Available-for-sale securities, fair value	349,951	499,941
Corporate Bond Securities [Member]
Available-for-sale Securities, Amortized Cost Basis, Total	5,928,995	8,452,701
Available-for-sale securities, gross unrealized gain	54,194	10,556
Available-for-sale securities, gross unrealized loss	(64,490)	(262,001)
Available-for-sale securities, fair value	$ 5,918,699	$ 8,201,256

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
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-Publisher FASB
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