Investments (Tables)

9 Months Ended

Sep. 30, 2020

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

	Cost		Gross unrealized gain		Gross unrealized loss			Fair value
September 30, 2020
Commercial Paper	$	866	$	0	$	0		$	866
Treasury Bills		7,748		1		0			7,749
Equity Securities		54		0		(12	)		42
		8,668		1		(12	)		8,657
Less Cash Equivalents		6,616		0		0			6,616
Total Investments, September 30, 2020	$	2,052	$	1	$	(12	)	$	2,041
December 31, 2019
Commercial Paper	$	797	$	0	$	0		$	797
Treasury Bills		7,734		0		0			7,734
Equity Securities		54		0		(9	)		45
		8,585		0		(9	)		8,576
Less Cash Equivalents		8,531		0		0			8,531
Total Investments, December 31, 2019	$	54	$	0	$	(9	)	$	45