Note 16 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	December 31,			December 31,
	2022			2021
Current:
Federal	$	(60	)	$	—
State		(20	)		(7	)
Foreign		(34	)		(9	)
Sub-total	$	(114	)	$	(16	)
Deferred:
Federal	$	17		$	—
State		—			—
Foreign		—			—
Sub-total	$	17		$	—
Total	$	(97	)	$	(16	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	December 31,						December 31,
	2022			%			2021			%
Income taxes computed at statutory rates	$	12,537			(21	)%	$	7,296			(21	)%
(Increases) decreases resulting from:
Change in valuation allowance		(13,463	)		22	%		(8,634	)		24	%
NOL surrendered for refundable tax credit		(2,164	)		4	%		-			—	%
Foreign research deductions and credits		1,329			(2	)%		-			—	%
Federal and state research and experimentation credits		1,037			(2	)%		787			(2	)%
State income taxes, net of federal tax benefit		491			(1	)%		414			(1	)%
Other		136			—	%		121			—	%
Total	$	(97	)		0	%	$	(16	)		(—	)%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,			December 31,
	2022			2021
Deferred tax assets:
Federal and state net operating losses	$	74,270		$	55,481
Federal and state research and experimentation credits		10,869			9,789
Research and experimental costs		4,837			-
ASC 842 - lease liabilities		1,508			393
Stock based compensation		482			217
Deferred social security tax		—			116
Fixed asset differences		87			—
Intangible asset differences		—			53
Goodwill		36			97
Accrued compensation		69			14
Other		43			40
Total gross deferred tax assets		92,201			66,200
Less valuation allowance		(83,000	)		(64,273	)
Net deferred tax assets	$	9,201		$	1,927
Deferred tax liabilities:
Patent expenditures	$	(1,464	)	$	(1,475	)
ASC 842 - right of use assets		(1,049	)		(288	)
Fixed asset differences		(28	)		(164	)
Intangible asset differences		(6,644	)		-
Total gross deferred tax liabilities	$	(9,185	)	$	(1,927	)
Total net deferred tax assets and liabilities	$	16		$	—

Summary of Income Tax Contingencies [Table Text Block]

	December 31,		December 31,
	2022		2021
Beginning balance	$	918	$	823
Addition for current year tax positions		98		84
Addition for prior year tax positions		30		11
Reduction for prior year positions		—		—
Reduction for prior year positions resolved during the current year		—		—
Ending balance	$	1,046	$	918