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Note 7 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property and equipment, gross	$ 3,269	$ 37,245
Less: accumulated depreciation	(1,447)	(12,362)
Total property and equipment, net	1,822	24,883
Operational Equipment [Member]
Property and equipment, gross	$ 867	12,126
Operational Equipment [Member] | Minimum [Member]
Property and equipment, net, useful life (Year)	3 years
Operational Equipment [Member] | Maximum [Member]
Property and equipment, net, useful life (Year)	10 years
Laboratory Equipment [Member]
Property and equipment, net, useful life (Year)	5 years
Property and equipment, gross	$ 498	524
Computer Equipment [Member]
Property and equipment, net, useful life (Year)	3 years
Property and equipment, gross	$ 59	222
Office Furniture and Equipment [Member]
Property and equipment, net, useful life (Year)	3 years
Property and equipment, gross	$ 164	221
Land [Member]
Property and equipment, gross	$ 0	1,047
Building [Member]
Property and equipment, net, useful life (Year)	39 years
Property and equipment, gross	$ 0	19,508
Construction in Progress [Member]
Property and equipment, gross	$ 1,681	$ 3,597

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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