Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2023, and December 31, 2022 are as follows (in thousands):

			Fair Value Measurements at March 31, 2023
	Fair Value at March 31, 2023		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents (1)	$	342,283	$	342,283	$	—	$	—
Marketable securities	$	32,897	$	32,897	$	—	$	—

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

(1)Cash and cash equivalents includes $317.3 million and $200.7 million invested in J.P Morgan U.S. government money market funds as of March 31, 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 March 31, 2023, are summarized as follows (in thousands):

	Carrying Value		Estimated Fair Value
2021 Bonds	$	67,408	$	65,334