Investments (Tables)

12 Months Ended

Dec. 31, 2022

Investments [Abstract]

Schedule of cost and estimated fair value of investments

	Cost		Gross unrealized gain		Gross unrealized loss		Fair value
December 31, 2022
Commercial Paper	$	1,377	$	0	$	0	$	1,377
Treasury Bills		7,922		32		0		7,954
Equity Securities		54		2		0		56
		9,353		34		0		9,387
Less Cash Equivalents		7,319		32		0		7,351
Total Investments, December 31, 2022	$	2,034	$	2	$	0	$	2,036
December 31, 2021
Commercial Paper	$	1,520	$	0	$	0	$	1,520
Treasury Bills		8,000		0		0		8,000
Equity Securities		54		2		0		56
		9,574		2		0		9,576
Less Cash Equivalents		6,520		0		0		6,520
Total Investments, December 31, 2021	$	3,054	$	2	$	0	$	3,056

Schedule of Changes in Accumulated Other Comprehensive Income (Loss)

	Years Ended December 31,
	2022		2021
Unrealized Gains
Unrealized holding gains arising during the period	$	1	$	0
Less: Reclassification of gains included in net income		0		(1	)
		1		(1	)
Deferred Taxes on Unrealized Gains:
Increase in deferred taxes on unrealized gains arising during the period		0		0
Less: Reclassification of taxes on gains included in net income		0		0
		0		0
Net Change in Accumulated Other Comprehensive Income (Loss)	$	1	$	(1	)