Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security

	Amortized cost		Gross unrealized holding gains		Gross unrealized holding losses			Estimated fair value
June 30, 2023
Available-for-sale securities:
US Treasury securities	$	3,739	$	18	$	—		$	3,757
Mutual funds		1,168		3		(5	)		1,166
Certificates of deposit		1,098		1		—			1,099
Corporate bonds and notes	$	974	$	—	$	(2	)	$	972
Total available-for-sale securities	$	6,979	$	22	$	(7	)	$	6,994

Schedule of maturities of marketable securities classified as available-for-sale securities

	Amortized cost		Estimated fair value
Due within one year	$	6,396	$	6,408
Due after one year through five years		583		586
Due after five years		—		—
Total available-for-sale securities	$	6,979	$	6,994

Schedule of available-for-sale marketable securities with continuous gross unrealized loss position

	Less than 12 months					More than 12 months				Total
	Estimated fair value		Gross unrealized holding losses			Estimated fair value		Gross unrealized holding losses		Estimated fair value		Gross unrealized holding losses
As of June 30, 2023
Mutual funds	$	1,166	$	(5	)	$	—	$	—	$	1,166	$	(5	)
Corporate bonds and notes		972		(2	)		—		—		972		(2	)
Total	$	2,138	$	(7	)	$	—	$	—	$	2,138	$	(7	)