Fair Value (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value [Abstract]

Fair value, assets measured on recurring basis

The following table presents, for each of the fair value hierarchy levels, assets that are measured at fair value on a recurring basis at June 30, 2023 and December 31, 2022 (in thousands):

	As of June 30, 2023
	Quoted Prices in
	Active Markets for
	Identical Assets		Other Observable		Unobservable
	(Level 1)		Inputs (Level 2)		Inputs (Level 3)		Total
U.S. Treasury securities and obligations of U.S. Government	$	—	$	22,435	$	—	$	22,435
Corporate bonds		—		191,345		—		191,345
Corporate bank loans		—		49,503		—		49,503
Municipal bonds		—		31,240		—		31,240
Mortgage-backed		—		1,238		—		1,238
Total debt securities		—		295,761		—		295,761
Total equity securities		22,763		—		—		22,763
Total investments	$	22,763	$	295,761	$	—	$	318,524

	As of December 31, 2022
	Quoted Prices in
	Active Markets for
	Identical Assets		Other Observable		Unobservable
	(Level 1)		Inputs (Level 2)		Inputs (Level 3)		Total
U.S. Treasury securities and obligations of U.S. Government	$	—	$	79,978	$	—	$	79,978
Corporate bonds		—		235,044		—		235,044
Corporate bank loans		—		75,183		—		75,183
Municipal bonds		—		35,018		—		35,018
Mortgage-backed		—		1,374		—		1,374
Total debt securities		—		426,597		—		426,597
Total equity securities		28,199		—		—		28,199
Total investments	$	28,199	$	426,597	$	—	$	454,796