Note 9 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	2019
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial Assets:
Available-for-Sale Debt Securities –
U.S. Treasury Bills Maturing in 2020	$	---	$	18,517,910	$	---
Equity Securities –
Domestic Equities		364,171		---		---
International Equities		110,629		---		---
Others		70,275		---		---
	$	545,075	$	18,517,910	$	---

	2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial Assets:
Available-for-Sale Debt Securities –
U.S. Treasury Bills Maturing in 2019	$	---	$	16,249,414	$	---
Equity Securities –
Domestic Equities		259,843		---		---
International Equities		179,083		---		---
Others		15,132		---		---
	$	454,058	$	16,249,414	$	---