Investments (Tables)

9 Months Ended

Sep. 30, 2019

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

	Cost		Gross unrealized gain		Gross unrealized loss		Fair value
September 30, 2019
Commercial Paper	$	810	$	0	$	0	$	810
Treasury Bills		7,684		56		0		7,740
Equity Securities		45		0		0		45
		8,539		56		0		8,595
Less Cash Equivalents		2,809		0		0		2,809
Total Investments, September 30, 2019	$	5,730	$	56	$	0	$	5,786
December 31, 2018
Commercial Paper	$	667	$	0	$	0	$	667
Treasury Bills		7,656		41		0		7,697
Equity Securities		45		0		0		45
		8,368		41		0		8,409
Less Cash Equivalents		667		0		0		667
Total Investments, December 31, 2018	$	7,701	$	41	$	0	$	7,742