Investments (Tables)

6 Months Ended

Jun. 30, 2021

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

	Cost		Gross unrealized gain		Gross unrealized loss			Fair value
June 30, 2021
Commercial Paper	$	1,019	$	0	$	0		$	1,019
Treasury Bills		7,999		0		0			7,999
Equity Securities		54		0		(12	)		42
		9,072		0		(12	)		9,060
Less Cash Equivalents		1,019		0		0			1,019
Total Investments, June 30, 2021	$	8,053	$	0	$	(12	)	$	8,041
December 31, 2020
Commercial Paper	$	718	$	0	$	0		$	718
Treasury Bills		7,998		1		0			7,999
Equity Securities		54		0		(12	)		42
		8,770		1		(12	)		8,759
Less Cash Equivalents		718		0		0			718
Total Investments, December 31, 2020	$	8,052	$	1	$	(12	)	$	8,041