Cash, Cash Equivalents, Restricted Cash Equivalents and Marketable Securities

12 Months Ended

Dec. 31, 2022

Cash and Cash Equivalents [Abstract]

Cash Equivalents, Restricted Cash Equivalents and Marketable Securities

3. Cash Equivalents, Restricted Cash Equivalents and Marketable Securities

The following tables summarizes the amortized cost and fair value of the Company's cash equivalents, restricted cash equivalents and marketable securities by major investment category (in thousands):

	As of December 31, 2022
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Current assets:
Cash equivalents:
Money market funds	$	25,313	$	—	$	—		$	25,313
Total cash equivalents		25,313		—		—			25,313
Restricted cash equivalents:
Money market funds		500		—		—			500
Total cash equivalents and restricted cash equivalents		25,813		—		—			25,813
Marketable securities:
U.S. Treasuries		36,563		—		(107	)		36,456
Commercial paper		26,631		—		—			26,631
Corporate debt securities		6,939		—		(39	)		6,900
International government		1,491		—		(3	)		1,488
Total marketable securities		71,624		—		(149	)		71,475
Total cash equivalents, restricted cash equivalents and marketable securities	$	97,437	$	—	$	(149	)	$	97,288

	As of December 31, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Current assets:
Cash equivalents:
Money market funds	$	115,595	$	—	$	—	$	115,595
Total cash equivalents	$	115,595	$	—	$	—	$	115,595

As of December 31, 2022, all marketable securities held have maturity dates within one year or less. The Company regularly reviews its available-for-sale marketable securities in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions. As of December 31, 2022, the aggregate difference between the amortized cost and fair value of each security in an unrealized loss position was de minimis. Since any provision for expected credit losses for a security held is limited to the amount the fair value is less than its amortized cost, no allowance for expected credit loss was deemed necessary at December 31, 2022.