Note 17 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

	December 31,
	2021			2020
Deferred tax assets, net:
Net operating loss carryforwards	$	29,277		$	15,406
Operating lease assets		(7,881	)		(82	)
Operating lease liabilities		8,086			88
Depreciation		3,840			3,427
Restricted stock		1,146			992
Business interest expense		1,165			1,441
Other temporary differences		886			321
Deferred tax assets		36,519			21,593
Valuation allowance		(36,519	)		(21,593	)
Net deferred tax assets	$	—		$	—

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

	Year Ended December 31,
	2021			2020			2019
Federal income tax at statutory rate		21.0	%		21.0	%		21.0	%
State income taxes, net of federal benefits		3.8	%		4.1	%		7.0	%
Impact of change in statutory tax rates		—			(0.8	%)		(0.2	%)
Impact of NOL write-offs		—			(250.4	%)		—
Impact of Research and Development credit write-off		—			(8.7	%)		—
Permanent deductions		0.3	%		(5.3	%)		(0.1	%)
Valuation allowance		(25.2	)%		240.1	%		(27.7	%)
Effective tax rate		—	%		—	%		—	%