Investments (Tables)

3 Months Ended

Mar. 31, 2017

Investments [Abstract]

Cost And Estimated Fair Value Of Investments

			Gross		Gross
			unrealized		unrealized		Fair
	Cost		gain		loss		value
March 31, 2017
Commercial Paper	$	361	$	0	$	0	$	361
Treasury Bills		7,414		8		0		7,422
Equity Securities		54		0		(54)		0
		7,829		8		(54)		7,783
Less Cash Equivalents		361		0		0		361
Total Investments, March 31, 2017	$	7,468	$	8	$	(54)	$	7,422
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