Note 6 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

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

	March 31, 2019
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial Assets:
Available-for-Sale Debt Securities –
U.S. Treasury Bills Maturing in 2019	$	---	$	19,702,622	$	---
Equity Securities:
Domestic Equities		337,010		---		---
International Equities		193,672		---		---
Others		12,420		---		---

	December 31, 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		---		---