Note 17 - Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Year Ended December 31,
	2022
	(in thousands)
	Level 1		Level 2		Level 3		Total
Assets
Cash Equivalents:
Certificates of deposit	$	—	$	1,693	$	—	$	1,693
Money funds		—		188,769		—		188,769
Short term investments:
Certificates of deposit		—		2,620		—		2,620
Other assets:
Certificates of deposit		—		162		—		162
Total	$	—	$	193,244	$	—	$	193,244
Liabilities:
Earn-out shares (1)	$	—	$	—	$	6,631	$	6,631
Warrant liabilities (1)		—		227		—		227
Total	$	—	$	227	$	6,631	$	6,858

	Year Ended December 31,
	2021
	(in thousands)
	Level 1		Level 2		Level 3		Total
Assets
Cash Equivalents:
U.S. treasury bills	$	—	$	199,999	$	—	$	199,999
Certificates of deposit		—		1,433		—		1,433
Short term investments:
Certificates of deposit		—		2,411		—		2,411
Other assets:
Certificates of deposit		—		285		—		285
Total	$	—	$	204,128	$	—	$	204,128
Liabilities:
Earn-out shares (1)	$	—	$	—	$	10,012	$	10,012
Warrant liabilities (1)		—		458		—		458
Total	$	—	$	458	$	10,012	$	10,470

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Year Ended December 31,
	2022
	(in thousands)
Opening balance	$	10,012
Total gains or losses from the period
Included in earnings		(4,165	)
Reclass from Earnout-RSU		784
Closing balance	$	6,631