Investments (Tables)

12 Months Ended

Dec. 31, 2023

Schedule of Investments [Abstract]

Schedule of Contractual Maturities of Held to Maturity Investments

The contractual maturities of the Company’s held-to-maturity investments are summarized below (in thousands):

	December 31, 2023				December 31, 2022
	Amortized Cost Basis		Aggregate Fair Value		Amortized Cost Basis		Aggregate Fair Value
Due in one year or less(1)	$	115,263	$	115,374	$	152,862	$	156,976
Due after one year through five years		7,155		7,197		1,961		1,948
Total	$	122,418	$	122,571	$	154,823	$	158,924

___________________________

The investments due in one year or less include cash equivalents of $58.6 million as of December 31, 2023 and $51.8 million as of December 31, 2022.

Schedule of Fair Value of Cash Equivalents, Long and Short Term Investments

The fair value of the cash equivalents, long-term and short-term investments are disclosed below (in millions):

	December 31, 2023
	Investment Level	Amortized Cost (Carrying Value)			Gross Unrealized Holding Gains		Estimated Fair Value
Commercial bonds and paper	Level 2	$	43.3		$	0.1	$	43.4
Money market funds	Level 1		69.6			—		69.6
U.S. Treasuries	Level 2		9.5			0.1		9.6
Total cash equivalents and investments			122.4			0.2		122.6
Less: cash equivalents			(58.6	)		—		(58.6	)
Total Investments		$	63.8		$	0.2	$	64.0

	December 31, 2022
	Investment Level	Amortized Cost (Carrying Value)			Gross Unrealized Holding Losses			Estimated Fair Value
Commercial bonds and paper	Level 2	$	66.8		$	(0.6	)	$	66.2
Money market funds	Level 1		51.8			—			51.8
U.S. Treasuries	Level 2		36.3			(0.6	)		35.7
Total cash equivalents and investments			154.9			(1.2	)		153.7
Less: cash equivalents			(51.8	)		—			(51.8	)
Total Investments		$	103.1		$	(1.2	)	$	101.9