Marketable Securities

12 Months Ended

Dec. 31, 2021

Marketable Securities

Marketable Securities

2. Marketable Securities

The Company has classified its marketable securities as available-for-sale securities. These debt securities are carried at estimated fair value with unrealized holding gains and losses included in accumulated other comprehensive income (loss) in shareholders’ equity until realized. Gains and losses on marketable security transactions are reported on the specific-identification method. Dividend and interest income are recognized when earned.

The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at December 31, 2021 and 2020 were as follows:

	Amortized cost		Gross unrealized holding gains		Gross unrealized holding losses			Estimated fair value
December 31, 2021
Available-for-sale securities:
Corporate bonds and notes	$	1,434	$	8	$	(2	)	$	1,440
Municipal bonds		1,573		—		(3	)		1,570
Total available-for-sale securities	$	3,007		8		(5	)		3,010
December 31, 2020
Available-for-sale securities:
Corporate bonds and notes	$	1,312	$	26	$	—		$	1,338
Municipal bonds		1,536		5		—			1,541
Total available-for-sale securities	$	2,848	$	31	$	—		$	2,879

Maturities of marketable securities classified as available-for-sale securities were as follows at December 31, 2021:

	Amortized		Estimated
	cost		fair value
Due within one year	$	1,785	$	1,791
Due after one year through five years		1,222		1,219
Total available-for-sale securities	$	3,007	$	3,010

There were no debt securities in an unrealized loss position as of December 31, 2021.