Investments (Tables)

12 Months Ended

Dec. 31, 2019

Investments [Abstract]

Schedule of cost and estimated fair value of investments

	Cost		Gross unrealized gain		Gross unrealized loss		Fair value
December 31, 2019
Commercial Paper	$	797	$	0	$	0	$	797
Treasury Bills		7,734		0		0		7,734
Equity Securities		45		0		0		45
		8,576		0		0		8,576
Less Cash Equivalents		8,531		0		0		8,531
Total Investments, December 31, 2019	$	45	$	0	$	0	$	45
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

Schedule of Changes in Accumulated Other Comprehensive Income

	December 31,
	2019			2018
Unrealized Gains
Unrealized holding gains arising during the period	$	0		$	19
Less: Reclassification of gains included in net income (loss)		(41	)		0
		(41	)		19
Deferred Taxes on Unrealized Gains:
Increase in deferred taxes on unrealized gains arising during the period		0			6
Less: Reclassification of taxes on gains included in net income (loss)		(9	)		0
		(9	)		6
Net Change in Accumulated Other Comprehensive Income	$	(32	)	$	13