Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2021

Marketable Securities [Line Items]

Schedule of Available for Sale

Debt Securities classified as available for sale consisted of:

December 31, 2020

(in thousands)

Securities	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value		Marketable Securities
U.S. Treasury notes	$	5,746	$	—	$	(47	)	$	5,699	$	5,699
U.S. Government mortgage backed securities		4,890		—		(52	)		4,838		4,838
Corporate bonds		5,288		52		—			5,340		5,340
Totals	$	15,924	$	52	$	(99	)	$	15,877	$	15,877

December 31, 2020
(in thousands)

	Less than 12 Months				12 Months or More					Total
Securities	Fair Value		Gross Unrealized Gains (Losses)		Fair Value		Gross Unrealized Gains (Losses)			Fair Value		Gross Unrealized Gains (Losses)
U.S. Treasury notes	$	501	$	—	$	5,245	$	(47	)	$	5,699	$	(47	)
U.S. Government mortgage backed securities		—		—		4,890		(52	)		4,838		(52	)
Corporate bonds		—		—		5,288		52			5,340		52
Totals	$	501	$	—	$	15,423	$	(47	)	$	15,877	$	(47	)

Schedule of Equity Securities

Securities	December 31, 2021 (in thousands)
Net losses recognized during the period on equity securities	$	(88	)
Less: Net gains and losses recognized during the period on equity securities sold during the period		—
Unrealized gains and losses recognized during the reporting period on equity securities still held at the reporting date	$	(88	)

Mutual Funds [Member]

Marketable Securities [Line Items]

Schedule of Available for Sale

Mutual Funds classified as available for sale consisted of:

	December 31, 2021
	(in thousands)
Securities	Fair Value		Short-Term Investments
Mutual Funds	$	16,175	$	16,175
Totals	$	16,175	$	16,175