Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of unrestricted available-for-sale marketable securities

Unrestricted available-for-sale marketable securities held by the Company are as follows, (dollars in thousands):

	March 31, 2023		December 31, 2022
	(unaudited)
Corporate and U.S. government agency and municipal debt securities
Amortized cost	$	227,331	$	466,333
Gross unrealized gains	—		14
Gross unrealized losses	(3,048)		(4,237)
Total fair value	$	224,283	$	462,110

Schedule of contractual maturities of the unrestricted available-for-sale marketable securities held

The contractual maturities of the unrestricted available-for-sale marketable securities held by the Company are as follows, (dollars in thousands):

	March 31, 2023
	(unaudited)
Less than 1 year	$	170,126
1 year to 2 years	42,713
2 years to 3 years	11,444
3 years to 4 years	—
Greater than 4 years	—
Total	$	224,283