Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Marketable Securities

Schedule of marketable securities

Marketable securities consist of the following:

	June 30, 2022
			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
(in thousands)	Cost		Gain		Loss		Fair Value
Corporate bonds	$	159,669	$	1	$	(2,341)	$	157,329
Total	$	159,669	$	1	$	(2,341)	$	157,329

	December 31, 2021
			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
(in thousands)	Cost		Gain		Loss		Fair Value
Corporate bonds	$	207,917	$	3	$	(666)	$	207,254
Total	$	207,917	$	3	$	(666)	$	207,254

Schedule of available-for-sale maturities

The following table summarizes maturities of the Company’s investments available-for-sale as of June 30, 2022:

	June 30, 2022
			Fair
(in thousands)	Cost		Value
Maturities:
Within 1 year	$	136,495	$	134,648
Between 1 to 2 years		23,174		22,681
Total investments available-for-sale	$	159,669	$	157,329