Investments (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Investments by Security type

Available-for-sale investments by security type were as follows (in thousands):

	Estimated Fair Value		Gross Unrealized Gains		Gross Unrealized Losses		Amortized Cost
At September 30, 2023:
U.S. Treasuries—Cash equivalents	$	85,666	$	20	$	—	$	85,646
Total	$	85,666	$	20	$	—	$	85,646
At December 31, 2022:
U.S. Treasuries—Cash equivalents	$	105,442	$	32	$	—	$	105,410
Total	$	105,442	$	32	$	—	$	105,410

Estimated Fair Values of Available for Sale Securities

The estimated fair values of available-for-sale securities at September 30, 2023, by contractual maturity, are summarized as follows (in thousands):

	September 30, 2023
Due in one year or less	$	85,666

Summary Of Net Gains And Losses On Equity Securities

Net gains and losses on equity securities were as follows (in thousands):

	For the Three Months Ended September 30,					For the Nine Months Ended September 30,
	2023			2022		2023			2022
Equity securities:
Net gains (losses) recognized during the period on equity securities	$	(568	)	$	—	$	(568	)	$	—
Unrealized net gains (losses) recognized during the period on equity securities still held at the reporting date	$	(568	)	$	—	$	(568	)	$	—