Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Estimated Fair Value of Investments

The following table summarizes the amortized cost and estimated fair value of the Company's U.S. Treasury securities and U.S. government-sponsored enterprise securities, which are considered to be available-for-sale investments and were included in short-term investments and long-term investments on the condensed consolidated balance sheets (in thousands):

	March 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Short-term investments:
U.S. Treasury securities	$	12,957	$	1	$	(6	)	$	12,952
U.S. government-sponsored enterprise securities		79,806		31		(66	)		79,771
Long-term investments:
U.S. Treasury securities		9,706		14		—			9,720
U.S. government-sponsored enterprise securities		29,520		35		—			29,555
	$	131,989	$	81	$	(72	)	$	131,998

	December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Short-term investments:
U.S. Treasury securities	$	32,174	$	3	$	(34	)	$	32,143
U.S. government-sponsored enterprise securities		66,106		68		(85	)		66,089
Long-term investments:
U.S. Treasury securities		7,242		—		(4	)		7,238
U.S. government-sponsored enterprise securities		34,686		—		(43	)		34,643
	$	140,208	$	71	$	(166	)	$	140,113