Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

The carrying value and fair value, by fair value hierarchy, of the Company’s financial instruments at June 30, 2023, and December 31, 2022 are as follows (in thousands):

			Fair Value Measurements at June 30, 2023
			Quoted
			Prices in
			Active		Significant
			Markets for		Other		Significant
	Fair Value at		Identical		Observable		Unobservable
	June 30,		Assets		Inputs		Inputs
	2023		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents (1)	$	347,650	$	347,650	$	—	$	—

			Fair Value Measurements at December 31, 2022
			Quoted
			Prices in
			Active		Significant
			Markets for		Other		Significant
	Fair Value at		Identical		Observable		Unobservable
	December 31,		Assets		Inputs		Inputs
	2022		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents (1)	$	237,125	$	237,125	$	—	$	—
Marketable securities	$	167,408	$	167,408	$	—	$	—

(1) Cash and cash equivalents includes $331.8 million and $200.7 million invested in U.S. government money market funds as of June 30, 2023 and December 31, 2022, respectively.

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The carrying values and estimated fair values of the 2021 Bonds as of June 30, 2023, are summarized as follows (in thousands):

	Carrying		Estimated
	Value		Fair Value
2021 Bonds	$	67,594	$	65,358