Investments (Tables)

6 Months Ended

Jun. 30, 2017

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

	Cost		Gross unrealized gain		Gross unrealized loss			Fair value
June 30, 2017
Commercial Paper	$	376	$	0	$	0		$	376
Treasury Bills		7,404		14		0			7,418
Equity Securities		54		0		(54	)		0
		7,834		14		(54	)		7,794
Less Cash Equivalents		376		0		0			376
Total Investments, June 30, 2017	$	7,458	$	14	$	(54	)	$	7,418
December 31, 2016
Commercial Paper	$	348	$	0	$	0		$	348
Treasury Bills		7,419		8		0			7,427
Equity Securities		54		0		(54	)		0
		7,821		8		(54	)		7,775
Less Cash Equivalents		348		0		0			348
Total Investments, December 31, 2016	$	7,473	$	8	$	(54	)	$	7,427