Investments (Tables)

6 Months Ended

Jun. 30, 2019

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

	Cost		Gross unrealized gain		Gross unrealized loss		Fair value
June 30, 2019
Commercial Paper	$	722	$	0	$	0	$	722
Treasury Bills		7,656		51		0		7,707
Equity Securities		45		0		0		45
		8,423		51		0		8,474
Less Cash Equivalents		722		0		0		722
Total Investments, June 30, 2019	$	7,701	$	51	$	0	$	7,752
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