Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2021

Investments Debt And Equity Securities [Abstract]

Schedule of Market Value, Cost and Unrealized Gains (Losses) on Equity Securities

The following table sets forth market value, cost, and unrealized gains (losses) on equity securities at December 31 (in thousands):

	2021		2020
Fair value	$	8,031	$	6,534
Cost basis		6,426		6,579
Unrealized gains (losses)	$	1,605	$	(45	)

Schedule of Gross Unrealized Gains and Losses on Marketable Securities

The following table sets forth the gross unrealized gains and losses on the Company’s marketable securities at December 31 (in thousands):

		2021			2020
Gross unrealized gains	$	2,574		$	1,627
Gross unrealized losses		(969	)		(1,672	)
Net unrealized gains (losses)	$	1,605		$	(45	)

Summary of Net Realized Gains (Losses) on Marketable Equity Securities

The following table shows the Company’s net realized gains (losses) on marketable equity securities (in thousands):

	2021		2020			2019
Realized gain (loss)
Sale proceeds	$	117	$	1,622		$	1,596
Cost basis of securities sold		92		1,641			1,289
Realized gain (loss)	$	25	$	(19	)	$	307
Realized gain (loss), net of taxes	$	19	$	(14	)	$	230