Note 3 - Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Marketable Securities [Table Text Block]

	Fair Value Measurements as of September 30, 2022 Using:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	70,058	$	—	$	(506	)	$	69,552
Commercial paper		20,825		—		(50	)		20,775
Certificates of Deposit		7,487		—		(39	)		7,448
Asset-backed securities		6,392		—		(46	)		6,346
Total assets	$	104,762	$	—	$	(641	)	$	104,121

Investments Classified by Contractual Maturity Date [Table Text Block]

	As of
	September 30, 2022
Maturing in one year or less	$	86,552
Maturing after one year through two years		17,569
Total	$	104,121