Fair Value (Tables)

9 Months Ended

Sep. 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 September 30, 2023 and December 31, 2022 (in thousands):

	As of September 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	$	—	$	22,678	$	—	$	22,678
Corporate bonds		—		170,247		—		170,247
Corporate bank loans		—		47,159		—		47,159
Municipal bonds		—		26,404		—		26,404
Mortgage-backed		—		1,196		—		1,196
Total debt securities		—		267,684		—		267,684
Total equity securities		19,759		—		—		19,759
Total investments	$	19,759	$	267,684	$	—	$	287,443

	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