Marketable Securities

12 Months Ended

Dec. 31, 2021

Investments Debt And Equity Securities [Abstract]

Marketable Securities

Note 6 – Marketable securities:

						Unrealized
	Market value		Cost basis		gains, net
	(In millions)
December 31, 2020:
Current assets	$	4.4	$	4.4	$	—
Noncurrent assets	$	2.9	$	2.9	$	—
December 31, 2021:
Current assets	$	2.6	$	2.6	$	—
Noncurrent assets	$	3.3	$	3.3	$	—

	Fair Value Measurements
			Quoted		Significant
			Prices in		Other
			Active		Observable
			Markets		Inputs
	Total		(Level 1)		(Level 2)
	(In millions)
December 31, 2020:
Current assets	$	4.4	$	—	$	4.4
Noncurrent assets:
Fixed income securities	$	2.7	$	—	$	2.7
Common stocks		.2		.2		—
Total	$	2.9	$	.2	$	2.7
December 31, 2021:
Current assets	$	2.6	$	—	$	2.6
Noncurrent assets:
Fixed income securities	$	1.3	$	—	$	1.3
Mutual funds		2.0		2.0		—
Total	$	3.3	$	2.0	$	1.3

Other. The fair value of our marketable securities are either determined using Level 1 inputs (because the securities are actively traded) or determined using Level 2 inputs (because although these securities are traded, in many cases the market is not active and the year-end valuation is generally based on the last trade of the year, which may be several days prior to December 31).