Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule for Available-for-Sale Securities

The following is a summary of available-for-sale securities as of June 30, 2022 (in thousands):

	Amortized Cost		Gross Unrealized Gain		Gross Unrealized (Losses)		Estimated Fair Value
Tax-exempt municipal securities	$	18,598	$	4	$	(365)	$	18,237
Corporate debt securities	8,718		—		(162)		8,556
Total	$	27,316	$	4	$	(527)	$	26,793

The following is a summary of available-for-sale securities as of December 31, 2021 (in thousands):

	Amortized Cost		Gross Unrealized Gain		Gross Unrealized (Losses)		Estimated Fair Value
Tax-exempt municipal securities	$	18,546	$	271	$	—	$	18,817
Corporate debt securities	10,898		163		—		11,061
Total	$	29,444	$	434	$	—	$	29,878

Schedule of Maturities of Marketable Securities

The following table summarizes the maturities of the Company’s marketable securities as of December 31, 2021 and June 30, 2022 (in thousands):

	December 31, 2021		June 30, 2022
Due within one year	$	6,501	$	8,854
Due after one year through five years	23,377		17,939
Total	$	29,878	$	26,793

Schedule of Proceeds from the Maturities of Available-for-Sale Securities

The following table summarizes the proceeds from the maturities and sales of available-for-sale securities for the three and six months ended June 30, 2021 and 2022 (in thousands):

	For the three months ended June 30,				For the six months ended June 30,
	2021		2022		2021		2022
Maturities of marketable securities	$	3,665	$	1,000	$	5,595	$	2,100
Sales of marketable securities	—		—		—		—
Total	$	3,665	$	1,000	$	5,595	$	2,100